Cementing

Chemplex Product Data Book

Cement Additives

September 2011

* 325-573-7298 phone * 325-573-3340 fax* or * 3101 Industrial * Kilgore, TX 75662 * * 903- 986-1119 phone * 903- 983-6675 fax * * P.O. Box 572 * 69 FM 576 West * Breckenridge, TX 76424* * 254-559-9030 phone * 254-559-9474 fax*

Chemplex, Ltd. Return Policy Chemplex, Ltd. sells and blends chemicals for oilfield applications. The blends are exact specifications and supervised by trained blenders and tested by the on staff PhD Chemist. Many blends are job specific and may not be utilized in other applications. The liability is limited to the purchase price of the chemicals if the chemicals do not perform to the specifications outlined by Chemplex. The company accepts no liability for damages resulting from failure to perform due to contamination of chemical while in purchaser’s possession. The use of the chemical is beyond Chemplex control after delivery to the customer. Restock Charges: 1. 2. 3. 4. 5.

15% 30 days after purchase 25% 60 days 35% 90 days 50% 180 days Not accepted after 180 days

Thank You for your interest and use in Chemplex chemicals.

Cement Additives C-11

– High Temperature Fluid Loss/Retarder

C-12

– Moderate Temperature Fluid Loss

C-15

– Low Temperature Non-Retarding Fluid Loss

C-16A

– Fluid Loss Additive

C-18

– Wide Range Fluid Loss Additive

C-18L

– Wide Range Fluid Loss Additive

C-20

– Lignosulfonate Retarder (< 200°F)

C-20L

– Lignosulfonate Retarder (< 200°F)

C-24

– Lignosulfonate Retarder (>200°F)

C-24L

– Lignosulfonate Retarder (>200°F)

C-26

– CMHEC-Based Retarder

C-35

– Cement Disperssant

C-37

– Conventional Disperssant/Friction Reducer

C-37L

– Conventional Disperssant/Friction Reducer

C-41/ C-413 



– Defoamer

– Defoamer

C-42P

– Defoamer

C-43/



– Thixotropic Agent

C-433



– Thixotropic Agent

C-44

– Bonding Improver, Expansive Additive

C-45

– Accelerator/Suspending Agent

Cement Additives cont. C-47

– Gas Migration Agent

C-51

– Suspension Additive

C-53L

– Surfactant for Diesel/Cement Slurries

C-63

– Cement Spacer Mix

Silica Flour

– Strength Stabilizer

Sodium Silicate Stop Loss Spacer Product

– Loss Circulation Spacer

Chemplex Plexcrete SFA

– Silica Fume Alternative

Chemplex Plexcrete STE

– Compressive Strength Enhancer

Plexaid Statfree

– Antistatic Agent

Plexfoam C-7

– Foamer for Cement

MC-500

– Microfine Cement

Chemplex, Ltd.

Chemplex “C” Series Cement Additives

Product Bulletin

Oil well cements are called on to perform several functions under a wide range of conditions. The same cement crew may be called out for a surface pipe job at 60°F circulating temperature at 2:30 am and a squeeze at 310°F that same afternoon. Any single cement, alone, cannot possibly fill the requirements for both of these jobs. However, with the proper choice of additives to change the properties of cement slurries, one or at most two basic cements can be modified to do almost any oilfield job. Chemplex stocks a variety of the more commonly used types of additives and has the expertise to formulate and supply more specialized products as well. The following descriptions of the types of cement additives and the typical performance that can be expected from Chemplex’s additives are intended only as a guide for the user. A table of cross-references to functionally similar additives is included on page 5. We strongly advise laboratory testing of cement slurries prepared with anyone’s additives, particularly at higher temperatures. Various classes, brands, and even batches of oilwell cement can respond very differently to many additives, and so the test results reported for individual products will not necessarily be reproduced by any currently available cement. The additives normally in stock are listed below with their primary functions: Chemplex C-11 Chemplex C-12 Chemplex C-16A Chemplex C-18, C-18L Chemplex C-20, C-20L Chemplex C-24, C-24L Chemplex C-26 Chemplex C-35 Chemplex C-37, C-37L Chemplex C-41L, C41P Chemplex C-43P, C-43L Chemplex C-44 Chemplex C-45 Chemplex C-47 Chemplex C-51 Chemplex C-53L Chemplex C-63

High Temperature fluid loss/retarder Moderate temperature fluid loss Low temperature, non-retarding fluid loss Wide range fluid loss Lignosulfonate retarder for below 220°F Lignosulfonate retarder for 200°F and up CMHEC-based retarder Cement dispersant, salt-tolerant Conventional dispersant/friction reducer Defoamers Thixotropic agent Bonding improver, expansive additive Accelerator/suspending agent Gas migration/fluid loss Suspension Additive Surfactant for diesel/cement slurries

Product bulletins on each of these products are available from your Chemplex representative. The next few pages describe in general the functions of these types of products. Fluid Loss Additives Fluid loss additives are used in oilwell cement to reduce the amount of “filtrate” than can be squeezed out of the slurry under pressure. The standard lab test for fluid loss involves placing the slurry on a fine wire screen and applying 1000-psi nitrogen pressure for a 30-minute period. From the amount of water squeezed out, a calculation gives the “API Fluid Loss” in milliliters (mL). A slurry with no fluid loss control will usually have an API fluid loss of 1400 mL or more. For casing cementing, fluid loss values in the 100-200 mL range are often recommended, while for critical liners and some squeeze work, slurries with values of 50 mL or even lower have been used. Various fluid-loss additives work best in their own particular conditions. C-12 retards cement somewhat, and works best at moderate temperatures; C-11 is a fairly strong retarder and is not normally used much below a bottom-hole circulating temperature (BHCT) of 160°F. C-18 and C-18L are non-retarding at low temperatures and effective up to at least 300°F, but being synthetic copolymers are more expensive than the other additives. Retarders Retarders are used to lengthen the time a slurry remains pumpable, particularly at higher temperatures. As a consequence of this, they also of course delay strength development. Various retarders work best in different temperature ranges and slurry designs to give the optimum trade-off between enough pump time and “soon-enough” strength development. Chemplex offers three retarders (in addition to C-11 fluid loss additive, which can be used as a stand-alone retarder) to fit most situations. C-20 and C24 are both based on lignosulfonates; these are proven performers, which tend to thin most slurries. C-20 is designed for use at BHCT’s up to about 210° or 220°F; above this temperature the loadings required become uneconomical. C-24 works best from about 200°F to 300°F or 325°F; below 200°F the difficulty in measuring the small loadings needed can give erratic behavior. Both C-20 and C-24 are also available in liquid form, indicated as C-20L and C-24L. If temperatures above the 300°-325°F range are encountered, the retarding action of C-24 can be intensified through the use %RULF$FLG, usually in a ratio of 3 parts C-24 to one part %RULF$FLG. Pilot testing of these slurries is necessary, as various cements have very different responses to the C-24 / %RULF$FLG mixture. With adequate lab design work, slurries may be designed for temperatures approaching 500°F. Chemplex C-26 retarder is based on cellulose instead of lignosulfonate, and can be used to retard cements from BHCT’s of about 130° to 290°F. C-26 tends to thicken slurries, and is recommended if foamed or thixotropic cement must be retarded. Lignosulfonate retarders tend to destabilize foamed slurries, and interfere with

thixotropy. C-26 gives some fluid loss control to slurries. It is incompatible with calcium chloride, but may be used at low temperatures with (prehydrated!) C-45 to offset its retarding effects. Dispersants/Friction Reducers Cement dispersants are used for their thinning effect on cement slurries, with two principal applications: lowering friction pressure of normal-weight slurries or preparing high-density cements that would normally be un-pumpably thick. Chemplex can supply either C-35, a very efficient, salt-tolerant product, or C-37, a conventional dispersant with no upper temperature limitations. Normal loadings of these are from about 0.3% to 1.0%, depending on cement characteristics, for thinning normal weight slurries. Dispersants are also used to mix heavyweight cements; Class H, for example, can be mixed at 18 lb/gal if either that density or the resulting very high strength is needed. Excessive amounts of any dispersant can lead to over-thinning of slurries and excessive free water formation. When preparing densified slurries with dispersants, higher loadings of dispersant are frequently possible without excessive free water formation. Simple “coffee cup” tests can be run with particular cements to determine optimal loadings. Defoamers Defoamers are almost always used in oil well cementing, not for any effect they have on the down hole properties of the slurry, but because they make mixing much easier. Because cement is usually blown to the mixer, it carries a lot of air with it. If this air gets trapped during mixing, it can make the slurry thicker, make your densometer read too light, and frequently can cause pumps to lose prime. A good defoamer will let air escape from the mix, minimizing these problems. Chemplex offers defoamers in either liquid or powder form. Liquid can be added to mix water or to the slurry at the point of mixing; some cementers use a garden sprayer to add C-41L as required. C-41P dry defoamer is normally dry-blended in cement. Thixotropic additives Thixotropic cement is made in such a way that it mixes and pumps fairly easily, but gels up quickly if it is not flowing. This property can be very useful in situations where ordinary cement falls or washes away from where it is placed- for example, in squeezes of active water zones, or in plugs in open hole or in large casing. The “old reliable” thixotropic additive is gypsum at 10-to15% of cement. Gypsum works fairly well at low temperatures, but is hard to retard above about 140 degrees F, and can be tricky to mix due to its gelling in “dead spots” in the mixing equipment. Chemplex offers C-43 thixotropic agent, in either dry or liquid form, as an economical alternative to gypsum but with milder acceleration than gyp. These additives give you the option of running a thixotropic slurry on the spur of the moment, as they don’t need to be dryblended like gypsum does.

Gas Migration and Bonding Additives A variety of approaches have been used in the last 20 years or so to help with two sometimes related problems: gas flow in the annulus after cementing and poor bond logs. Research at major cementing companies has shown that two of the most important factors in getting a tight, leak-free cement job are good mud removal and good fluid-loss control. If the annulus is cleaned of mud residue, and if the cement doesn’t lose its water to the formation, the annulus will stay “full” of cement slurry and gas will have less opportunity to enter. Simply pumping an adequate volume of a turbulent-flow flush and controlling fluid loss to 100 mL or better will many times eliminate these problems. Not all wells are cooperative, though. Some situations require more than just the basics. Two additives that Chemplex furnishes can attack two faces of the gas flow/bonding problem. C-44 is an additive that causes cement to expand slightly as it sets. This expansion results in a better “grip” of the set cement on the pipe and formation, so that gas can’t find a flow path. C-47 additive changes the flow properties of the slurry, making it more liquid until it is actually on the point of setting. This property lets the slurry “drain” into pockets that might otherwise provide an entry point for gas. C-47 also has a highly efficient fluid-loss additive built in, so additional fluid loss control is not needed.

Functional Equivalents for Cement Additives Chemplex C-11 C-12 C-15 C-18 C-18L C-20 C-20L C-24 C-24 L C-26 Boric Acid C-35 C-37 C-37L C-41P C-41L, C42L C-43 C-43L C-44 C-45 C-47 C-51 C-53L C-63 Sodium Silicate

Halliburton HALAD-14 HALAD-9 HALAD 322 HALAD 600LE+ HR-4 HR 6L HR-12 HR 12L Diacel LWL Component R CFR-3 CFR-2 CFR 2L D-Air D Air 2 Versa Set Versa Set L Suber CBL Econolite Gas Stop FWCA DOC 3 Dual Spacer FloCheck, Superflush

DS D-60 D-59 D-127 D8 D158 D-13 D-28 D-8 D-93 D65A D-65 D 46 D 47 D-111 Self-Stress D-79 SOS Mudpush D-75, Zonelock

BJ FL-19 FL-10 FL-50 FL-32 FL-32L R-3 R-4 R-6 R-9 CD33 CD-31 FP 11 FP 6L BA 29 A-2 Diesel Oil Cement MCS-2 Sodium Silicate

Primary Function Fluid loss control, retarder Fluid loss control Fluid loss control, low temp. Fluid loss Fluid loss Low temp retarder Low temp retarder High temp retarder High temp retarder Moderate temp retarder Retarder intensifier Dispersant salt tolerant Dispersant Dispersant Defoamer Defoamer Thixotropic agent Thixotropic agent Expansive agent-gas migration Extender Gas migration/fluid loss Free water control Diesel slurries Weighted preflush/spacer Lost circulation, preflush

Chemplex, Ltd.

Chemplex C-11 Fluid Loss Additive

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-11 is a fluid loss additive and retarder for use in the 140°-300°F temperature range. It is effective in all API classes of cement, and is compatible with salt up to 18% by weight of water.

Chemplex C-11 can be used in cement slurries at typical dosages of 0.2 to 1.5 pounds per sack of cement. It is effective in salt concentrations up to 18%. Though C-11 shows very good compatibility with most cement additives, laboratory testing is advised when running unfamiliar blends or brands of cement. Performance of Chemplex C-11 as a retarder in some example slurries is given in the table on the reverse of this page. Loadings of 0.5 lb/sk and above are typical where this product is used for its fluid loss control properties.

PHYSICAL PROPERTIES Specific gravity: Absolute volume: Appearance: Solubility in water:

1.33 0.0903 gal/lb Tan powder complete

CHEMICAL DESCRIPTION

PACKAGING

Chemplex C-11 contains cellulose derivatives and naphthalene sulfonate dispersants.

Chemplex C-11 is supplied in 50-pound lined bags.

LIMITATIONS

AVAILABILITY

Chemplex C-11 is not compatible with calcium chloride. Salt or Chemplex C-45 are effective accelerators for C-11 slurries.

Chemplex C11 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex C-11 Class H, 4.3 gal. Fresh water/sk. 16.4 lb/gal, yield 1.06 cu.ft./sk. API Casing Schedules

% C-11 0.2 0.3 0.4 0.3 0.4 0.6 1.0 1.4

Depth 12000 12000 12000 14000 14000 14000 16000 16000

BHST (°F) 260 260 260 290 290 290 320 320

BHCT (°F) 172 172 172 206 206 206 247 247

Approximate Thickening Time 2:15 3:20 5:00 2:15 3:00 7:00 2:00 2:30

C-11 loadings of 0.4 to 0.5 typically will reduce fluid loss to 250 mL or below in 16.4 pound slurries. Add 30-60 minutes to thickening times for slurries mixed at 15.6 lb/gal (5.2 gal water).

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-12 Fluid Loss Additive

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-12 is a fluid loss additive for use in the 100°-210°F temperature range. It is effective in all API classes of cement, and is compatible with salt up to 18% by weight of water.

Chemplex C-12 can be used in cement slurries at typical dosages of 0.4 to 1.5 pounds per sack of cement. It is effective in salt concentrations up to 18%. Though C-12 shows very good compatibility with most cement additives, laboratory testing is advised when running unfamiliar blends or brands of cement. A table giving some typical slurry properties possible with Chemplex C-12 is on the reverse of this page.

PHYSICAL PROPERTIES Specific gravity: Absolute volume: Appearance: Solubility in water:

1.22 0.0984 gal/lb Tan powder complete

CHEMICAL DESCRIPTION

PACKAGING

Chemplex C-12 contains cellulose derivatives and naphthalene sulfonate dispersants.

Chemplex C-12 is supplied in 50-pound bags. It is not a DOT regulated material.

LIMITATIONS

AVAILABILITY

Chemplex C-12 will significantly increase slurry viscosity when used at over about 0.5 lb/sack of cement; slurries may need to be blended slightly light to be readily mixable. C-12 is mildly retarding in most applications, and may excessively delay strength development in very cool wells.

Chemplex C12 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex C-12 in Class H Cement Class H cement, 4.3 gal/sk water, 1.06 cu ft/sk yield, 16.4 lb/gal density. Casing or liner Schedules

% C-12 0.4 0.4 0.4 0.5 0.5 0.6 0.7

BHST (°F) 170 200 230 200 230 230 230

BHCT (°F) 113 125 144 125 144 144 144

Approximate Thickening Time 5:00 4:00 3:00 5:00 3:15 3:45 4:15

BHCT (°F) 136 159 186 186

Approximate Thickening Time 3:00 3:30 2:00 2:45

Squeeze Schedules

% C-12 0.4 0.6 0.6 0.8

BHST (°F) 170 200 230 230

All slurries listed should give >500 psi strength in 8 hours and >5000 psi in 24 hours at the BHST’s listed. Fluid loss values below 100mL/30 min. are typical for the slurries above with 0.5 to 0.6% C-12.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-15 Fluid Loss Additive

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-15 is a mildly retarding fluid loss additive for use at all temperatures below about 200°F. It thins, rather than thickens, typical slurries.

Typical loadings of Chemplex C-15 are from 0.6% to 1.0% by weight of cement in normal density slurries, and up to about 1.5% in lightweight designs. The table on the reverse of this page gives some example slurries.

PHYSICAL PROPERTIES Specific gravity: Absolute volume: Appearance: Solubility in water:

1.30 0.0924 gal/lb Reddish powder Limited by viscosity

CHEMICAL DESCRIPTION Chemplex C-15 is a proprietary blend of polymeric additives.

PACKAGING Chemplex C-15 is supplied in 50 pound bags. It is not a DOT regulated material.

AVAILABILITY Chemplex C-15 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

LIMITATIONS Chemplex C-15 is a fairly strong dispersant in typical applications, and therefore should be used with caution in lightweight cements. Excessive free water can result from overdispersion of lighter slurries. C-15 should not be used in cement designs containing more than 18% salt.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex C-15 in Some Example Cement Slurries Cement

Density

% C-15

Fluid Loss @ Temperature

Class H, neat, 5.2 gal/sk fresh water Class H, neat, 5.2 gal/sk fresh water Class H, neat, 4.3 gal/sk fresh water Class H, neat, 4.3 gal/sk fresh water Class H, 18% salt, 4.3 gal/sk fresh water

15.6 lb/gal 15.6 lb/gal 16.4 lb/gal 16.4 lb/gal 16.7 lb/gal

1.0 1.5 0.5 0.8 1.0

48 cc/30 min @ 114°F 30 cc/30 min @ 114°F 109 cc/30 min @ 114°F 46 cc/30 min @ 114°F 89 cc/30 min @ 95°F

Class A, neat, 5.2 gal/sk fresh water Class A, neat, 5.2 gal/sk fresh water Class A, 50:50 poz, 2% gel, 5.8 gal/sk fresh water Class A, 50:50 poz, 2% gel, 5.8 gal/sk fresh water

15.6 lb/gal 15.6 lb/gal 14.1 lb/gal 14.1 lb/gal

0.8 1.0 1.0 1.5

181 cc/30 min @ 90°F 84 cc/30 min @ 90°F 141 cc/30 min @ 114°F 52 cc/30 min @ 114°F

Class C, 2% C-45, 8.7 gal/sk fresh water

13.5 lb/gal

1.5

465 cc/30 min @ 90°F

Chemplex, Ltd.

Chemplex C-16A Fluid Loss Additive

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-16A is a non-retarding fluid loss additive with particular application in lightweight slurries. It is highly effective at exceptionally low loadings – 0.5% or below – in many slurry designs. It can also be used at 1% to 2.5% loadings in “latex cement” designs.

Typical loadings of Chemplex C-16A are from 0.5% to 0.8% by weight of cement in normal or lightweight slurries. Pozzolan appears to enhance the performance of this additive. The table on the reverse of this page gives some example slurries.

PHYSICAL PROPERTIES Specific gravity: Absolute volume: Appearance: Solubility in water:

1.33 0.0903 gal/lb Pale yellow powder Limited by viscosity

CHEMICAL DESCRIPTION Chemplex C-16A is a proprietary blend of an advanced dispersant with a polyvinyl alcohol (PVA). It is formulated with defoamer included to avoid the foaming problems sometimes seen with PVA products.

LIMITATIONS

Chemplex C-16A has almost no effect on slurry viscosity below about 140° F, and begins to thicken slurries slightly above that temperature. This property can aid in controlling free water, particularly in lighter designs.

PACKAGING Chemplex C-16A is supplied in 50 pound bags. It is not a DOT regulated material.

AVAILABILITY Chemplex C16A is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

Chemplex C-16A may lose some of its effectiveness in coarse-ground cements such as neat API Class H.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Fluid Loss Performance of C-16A C16A loading

temperature

API fluid loss

80 F 80 F 100 F 120 F

20 cc/30 min 12 16 30

80 F 100 F 120 F

14 cc/30 min 16 32

0.50% 0.50% 0.50% 0.50% 0.75%

70 F 80 F 100 F 120 F 140 F

20 cc/30 min 17 34 44 64

0.75% 1.00%

120 F 120 F

220 cc/30 min 160

120 F 120 F 140 F 160 F

48 cc/30 min 30 92 120

Class C, neat, 14.8 lb/gal 0.50% 0.75% 0.50% 0.50% Class C, 50/50 poz, 2% bentonite, 14.2 lb/gal 0.50% 0.50% 0.50% Class A, neat, 15.6 lb/gal

Class H, neat, 15.6 lb/gal

Class H, 50/50 poz, 2% bentonite, 14.2 lb/gal 0.50% 0.75% 0.50% 0.75%

Updated 10-29-08 This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-18 Fluid Loss Additive

Product Bulletin

GENERAL INFORMATION Chemplex C-18 is a fluid loss additive with wide utility in the 70°-300°F temperature range. It is effective in all API classes of cement, and is compatible with salt up to saturation.

PHYSICAL PROPERTIES Specific gravity: Absolute volume: Appearance: Solubility in water:

1.7 0.0706 gal/lb White powder complete

CHEMICAL DESCRIPTION Chemplex C-18 contains synthetic polymers in a spray-dried, free-flowing form.

LIMITATIONS Chemplex C-18 is not compatible with calcium chloride. Salt, KCl, or Chemplex C-45 are effective accelerators for C-18 slurries.

RECOMMENDED USES Chemplex C-18 can be used in cement slurries at typical dosages of 0.3 to 1.6 pounds per sack of cement. It is effective in all salt concentrations. Loadings of C-37 dispersant as low as 0.3% typically enhances the fluid-loss performance of C-18. Though C-18 shows very good compatibility with most cement additives, laboratory testing is advised when running unfamiliar blends or brands of cement.

PACKAGING Chemplex C-18 is supplied in 50-pound bags. It is not a DOT regulated material.

AVAILABILITY Chemplex C18 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-18L Fluid Loss Additive

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-18L is a fluid loss additive with wide utility in the 140°-300°F temperature range. It is effective in all API classes of cement, and is compatible with salt up to saturation.

Chemplex C-18L can be used in cement slurries at typical dosages of 0.2 to 1.0 gallons per sack of cement. It is effective in all salt concentrations. Loadings of C-37 dispersant as low as 0.3% typically enhance the fluid-loss performance of C-18L. Though C-18L shows very good compatibility with most cement additives, laboratory testing is advised when running unfamiliar blends or brands of cement. Performance of Chemplex C-18L in some example slurries is given in the table below.

PHYSICAL PROPERTIES Specific gravity: Appearance: Bulk Density: Solubility in water:

1.12 Viscous, pale liquid 9.3 lb/gal complete

CHEMICAL DESCRIPTION

PACKAGING

Chemplex C-18L contains synthetic polymers in a non-flammable carrier.

CHEMPLEX C-18L IS SUPPLIED IN 55GALLON DRUMS, 275-GALLON TOTES, OR IN BULK. IT IS NOT A DOT REGULATED MATERIAL.

LIMITATIONS Chemplex C-18L is not compatible with calcium chloride. Salt or Chemplex C-45 are effective accelerators for C-18L slurries.

AVAILABILITY Chemplex C-18L is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Fluid Loss with C18L in Some Class H Slurries

Slurry 16.2 lb/gal, 35% silica flour, 5.62 gal/sk water, yield 1.43 16.2 lb/gal: Class H, 35% silica flour, 0.5% C 37 5.62 gal/sk water, yield 1.43 16.2 lb/gal: Class H, 35% silica flour, 0.5% C37 0.4% C20, 5.62 gal/sk water, yield 1.43 16.2 lb/gal: Class H, 35% silica flour, 0.5% C37, 0.7% C24, 5.62 gal/sk water, yield 1.43 12.0 lb/gal: Class H, 3 lb/sk C-45, 14 gal/sk water, yield 2.35 16.1 lb/gal: Class H, saturated salt 5.2 gal/sk water, yield 1.28

BHCT, ° F 113°

C18L Loading 0.38 gal/sk

Fluid Loss, 1000 psi/30 min 173 ml

113°

0.38 gal/sk

67 ml

206°

0.38 gal/sk

97 ml

270°

0.56 gal/sk

61 ml

113°

1.0 gal/sk

90 ml

144°

1.0 gal/sk

53 ml

Chemplex, Ltd.

Chemplex C-20 Cement Retarder

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-20 is a lignosulfonate retarder for all classes of oilwell cement. It is designed for use in the 125°-220°F temperature range.

Chemplex C-20 is typically used at levels of 0.2% to 1.0% by weight of cement in its normal temperature range. See the table on the reverse of this page for some example slurries.

PHYSICAL PROPERTIES Specific gravity: Appearance: Absolute volume: Bulk Density: Solubility in water:

1.54 Dark brown powder 0.0780 39-41 lb/cu.ft. Soluble

CHEMICAL DESCRIPTION Chemplex C-20 is a modified calcium lignosulfonate.

PACKAGING Chemplex C-20 is furnished in lined 50-pound bags.

AVAILABILITY Chemplex C-20 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

LIMITATIONS Chemplex C-20 is recommended for use below circulating temperatures of about 220 degrees F. Above this temperature, a higher-range retarder such as Chemplex C-24 will typically be both more economical and more predictable.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

C-20 Retarder Loading Chart

Depth 8000 10000 12000 12000 14000 14000

Static Temp °F 200 230 260 260 290 290

Circulating Temp °F 125 144 172 172 206 206

C-20 Loading 15 lb/100 sk 25 lb/100 sk 30 lb/100 sk 40 lb/100 sk 40 lb/100 sk 50 lb/100 sk

Approx Thickening Time hr:min 2:30 3:00 3:15 4:30 3:30 4:30

These thickening times are based on historical data on various oilwell cements and are believed to be reliable. However, cement response to retarders can vary widely. Interactions with other additives can also be very unpredictable. Users of this data are therefore strongly cautioned to use good judgement in its use, and to obtain independent slurry testing particularly if working with cements or slurries whose retarder response is not well known.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-20L Cement Retarder

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-20L is a liquid lignosulfonate retarder for all classes of oilwell cement. It is designed for use in the 125°-220°F temperature range.

Chemplex C-20L is typically used at levels of 0.05 to 0.2 gallons per sack of cement in its normal temperature range. See the table on the reverse of this page for some example slurries.

PHYSICAL PROPERTIES

PACKAGING

Flash point: Density: Appearance: Absolute volume: Solubility in water:

Chemplex C-20L is furnished in 5-gallon pails, 55-gallon poly drums, or in bulk.

Above 200 F 9.58 lb/gal Dark brown liquid 0.104 gal/lb Complete

CHEMICAL DESCRIPTION Chemplex C-20L is a modified calcium lignosulfonate in an aqueous carrier.

AVAILABILITY Chemplex C-20L is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

LIMITATIONS The use of Chemplex C-20L is recommended at circulating temperatures below about 220 degrees F. Above that point, a higher temperature retarder such as Chemplex C-24L will be both more economical and more predictable in behavior.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

C-20L Retarder Loading Chart

Depth 8000 10000 12000 12000 14000 14000

Static Temp °F 200 230 260 260 290 290

Circulating Temp °F 125 144 172 172 206 206

C-20L Loading 4.7 gal/100 sk 7.9 gal/100 sk 9.4 gal/100 sk 12.6 gal/100 sk 12.6 gal/100 sk 15.7 gal/100 sk

Approx Thickening Time hr:min 2:30 3:00 3:15 4:30 3:30 4:30

These thickening times are based on historical data on various oilwell cements and are believed to be reliable. However, cement response to retarders can vary widely. Interactions with other additives can also be very unpredictable. Users of this data are therefore strongly cautioned to use good judgement in its use, and to obtain independent slurry testing particularly if working with cements or slurries whose retarder response is not well known.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-24 Cement Retarder

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-24 is a lignosulfonate retarder for all classes of oilwell cement. It is designed for use in the 200°-320°F temperature range.

Chemplex C-24 is typically used at levels of 0.3% to 2.0% by weight of cement in its normal temperature range. See the table on the reverse of this page for some example slurries. Its action may be intensified to give performance at over 400 degrees if required through the addition of borates or of certain organic acids; laboratory testing is mandatory for such applications.

PHYSICAL PROPERTIES Specific gravity: Appearance: Absolute volume: Bulk Density: Solubility in water:

1.54 Dark brown powder 0.0780 39-41 lb/cu.ft. Soluble

CHEMICAL DESCRIPTION Chemplex C-24 is a modified sodium lignosulfonate.

LIMITATIONS As with any high-temperature lignosulfonate retarder, care should be exercised in using Chemplex C-24 at or below 200°F slurry temperature, as over-retardation is possible with these materials. Laboratory testing is strongly suggested for any use of high-temperature retarders, particularly in unfamiliar cements or slurry designs.

PACKAGING Chemplex C-24 is furnished in lined 50-pound bags.

AVAILABILITY Chemplex C-24 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex C-24 Retarder Loading Chart Approximate thickening times for Class H, 35% silica flour, 16.0 lb/gal slurry, 5.9 gal/sk fresh water

Depth 12000 14000 16000 18000

Static Temp °F 260 290 320 350

Circulating Temp °F 197 233 270 308

C-24 Loading Approx. 3 hr 30 lb/100 sk 40 lb/100 sk 70 lb/100 sk 100 lb/100 sk

C-24 Loading Approx. 4 hr 40 lb/100 sk 50 lb/100 sk 90 lb/100 sk 120 lb/100 sk

These thickening times are based on historical data on various oilwell cements and are believed to be reliable. However, cement response to retarders can vary widely. Interactions with other additives can also be very unpredictable. Users of this data are therefore strongly cautioned to use good judgement in its use, and to obtain independent slurry testing particularly if working with cements or slurries whose retarder response is not well known.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-24L Cement Retarder

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-24L is a liquid lignosulfonate retarder for all classes of oilwell cement. It is designed for use in the 200°-320°F temperature range.

Chemplex C-24L is typically used at levels of 0.1 to 0.5 gallons per sack of cement in its normal temperature range. See the table on the reverse of this page for some example slurries. Its action may be intensified to give performance at over 400 degrees if required through the addition of borates or of certain organic acids; laboratory testing is mandatory for such applications.

PHYSICAL PROPERTIES Flash point: Density: Appearance: Absolute volume: Solubility in water:

Above 200 F 9.58 lb/gal Dark brown liquid 0.104 gal/lb Complete

CHEMICAL DESCRIPTION Chemplex C-24L is a modified sodium lignosulfonate in an aqueous carrier.

LIMITATIONS As with any high-temperature lignosulfonate retarder, care should be exercised in using Chemplex C-24L at or below 200°F slurry temperature, as over-retardation is possible with these materials. Laboratory testing is strongly suggested for any use of high-temperature retarders, particularly in unfamiliar cements or slurry designs.

PACKAGING Chemplex C-24L is furnished in 5-gallon pails, 55-gallon poly drums, or in bulk.

AVAILABILITY Chemplex C-24L is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex C-24L Retarder Loading Chart Approximate thickening times for Class H, 35% silica flour, 16.0 lb/gal slurry, 5.9 gal/sk fresh water

Depth 12000 14000 16000 18000

Static Temp °F 260 290 320 350

Circulating Temp °F 197 233 270 308

C-24L Loading Approx. 3 hr 9.4 gal/100 sk 12.6 gal/100 sk 22.0 gal/100 sk 31.5 gal/100 sk

C-24L Loading Approx. 4 hr 12.6 gal/100 sk 15.7 gal/100 sk 28.3 gal/100 sk 37.7 gal/100 sk

These thickening times are based on historical data on various oilwell cements and are believed to be reliable. However, cement response to retarders can vary widely. Interactions with other additives can also be very unpredictable. Users of this data are therefore strongly cautioned to use good judgement in its use, and to obtain independent slurry testing particularly if working with cements or slurries whose retarder response is not well known.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-26 Cement Retarder

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-26 is a cellulose-based cement retarder for use in the 130°-260°F temperature range. It is effective in all API classes of cement, and is compatible with salt up to 18% by weight of water. C-26 is particularly useful where lignosulfonate retarders are counter indicated, for instance, in foamed or thixotropic cements.

Chemplex C-26 can be used in cement slurries at typical dosages of 0.1 to 1.5 pounds per sack of cement. It is effective in salt concentrations up to 18%. Though C-26 shows very good compatibility with most cement additives, laboratory testing is advised when running unfamiliar blends or brands of cement. A table giving some typical slurry properties possible with Chemplex C-26 is on the reverse of this page. C-26 is also useful as a hightemperature fluid-loss additive, particularly when combined with C-37 or C-35 dispersant.

PHYSICAL PROPERTIES Specific gravity: Absolute volume: Appearance: Solubility in water:

1.36 0.0880 gal/lb Yellowish powder Limited by viscosity

CHEMICAL DESCRIPTION Chemplex C-26 is a selected grade of CMHEC, or carboxymethylhydroxyethylcellulose.

LIMITATIONS Chemplex C-26 will significantly increase slurry viscosity when used at over about 0.5 lb/sack of cement; slurries may need to be blended slightly light to be readily mixable. C-26 is incompatible with calcium chloride.

PACKAGING Chemplex C-26 is supplied in 50-pound bags. It is not a DOT regulated material.

AVAILABILITY Chemplex C-26 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Example of Chemplex C-26 slurries: Class H, 35% silica flour, 5.9 gal/sk water, 1.47 cu.ft./sk yield, 16.0 lb/gal density.

Lb/sack C-26 0.1 0.2 0.4 0.6

BHST (°F) 230 260 290 290

BHCT (°F) 167 197 233 233

Approximate Thickening Time 3:30 3:30 2:30 3:30

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-35 Cement Dispersant

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-35 is a versatile dispersant/friction reducer for all oilwell cements. It is effective at salt concentrations from zero to saturation and at temperatures from 100° to 400° F.

Chemplex C-35 can be used at loadings from 0.25 to 0.75 pound per sack of cement, depending on slurry density, type of cement, and presence of other additives. Laboratory testing is strongly recommended when first using Chemplex C-35 with a particular cement or additive package. Chemplex C-35 is mildly retarding in most applications.

PHYSICAL PROPERTIES Specific gravity: Appearance: Absolute volume: Bulk Density: Solubility in Water:

1.85 dark red powder 0.0649 gal/lb 36-40 lb/cu.ft. Soluble

CHEMICAL DESCRIPTION Chemplex C-35 is a complex copolymer containing no napthalene sulfonates. It is strongly anionic in nature.

PACKAGING Chemplex C-35 is furnished in 50-pound bags.

AVAILABILITY Chemplex C-35 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

LIMITATIONS As with any dispersant, care should be taken in slurry design with Chemplex C-35 to avoid excessive dosages. Excess dispersant can cause settling of slurries and excessive free water.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-37 Cement Dispersant

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-37 is a dispersant/friction reducer for all oilwell cements. It is effective at salt concentrations from zero to 18% by weight of water and at temperatures from 70° to 400° F.

Chemplex C-37 can be used at loadings from 0.40 to 1.0 pound per sack of cement, depending on slurry density, type of cement, and presence of other additives. Laboratory testing is strongly recommended when first using Chemplex C-37 with a particular cement or additive package. Chemplex C-37 is mildly retarding in most applications, particularly below 100 degrees F. A table with some suggested guidelines for mixing densified slurries with C-37 is on the reverse of this page.

PHYSICAL PROPERTIES Specific gravity: Appearance: Absolute volume: Bulk Density: Solubility in Water:

1.30 Tan powder 0.0923 gal/lb 40-45 lb/cu.ft. Soluble

CHEMICAL DESCRIPTION Chemplex C-37 is a napthalene sulfonate copolymer. It is strongly anionic in nature.

LIMITATIONS As with any dispersant, care should be taken in slurry design with Chemplex C-37 to avoid excessive dosages. Excess dispersant can cause settling of slurries and excessive free water.

PACKAGING Chemplex C-37 is furnished in 50-pound bags.

AVAILABILITY Chemplex C-37 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

C-37 Dispersant Loading Chart Slurry Weight

Gal/sk water

lb/sack C-37

17.0 lb/gal 17.5 lb/gal 18.0 lb/gal

3.8 gal 3.4 gal 3.0 gal

0.5 lb 0.7 lb 1.0 lb

or

Gal/sack C-37L 0.16 gal 0.22 gal 0.33 gal

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-37L Cement Dispersant

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-37L is a liquid dispersant/friction reducer for all oilwell cements. It is effective at salt concentrations from zero to 18% by weight of water and at temperatures from 70° to 400° F.

Chemplex C-37L can be used at loadings from 0.12 to 0.45 gallon per sack of cement, depending on slurry density, type of cement, and presence of other additives. Laboratory testing is strongly recommended when first using Chemplex C-37L with a particular cement or additive package. Chemplex C-37L is mildly retarding in most applications, particularly below 100 degrees F. A table with some suggested guidelines for mixing densified slurries with C37L is on the reverse of this page.

PHYSICAL PROPERTIES Appearance: Absolute volume: Density: Solubility in Water: Flash point:

Brown liquid 0.102 gal/lb 9.8 lb/gal Soluble None

CHEMICAL DESCRIPTION Chemplex C-37L is a naphthalene sulfonate copolymer dissolved in an aqueous carrier. It is strongly anionic in nature.

LIMITATIONS As with any dispersant, care should be taken in slurry design with Chemplex C-37L to avoid excessive dosages. Excess dispersant can cause settling of slurries and excessive free water.

PACKAGING Chemplex C-37L is furnished in 5 gallon pails, 55 gallon poly drums, or in bulk. It is not a DOT regulated material.

AVAILABILITY Chemplex C-37L is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-41L Cement Defoamer

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-41L is a liquid defoamer for all types of oil well cement.

Chemplex C-41L is normally used at dosages of 0.1 to 1.0 gallons for every 10 barrels of mix water. It should be added as near the point of foam generation as possible, as it will tend to float on mix water if not well agitated. A garden bug sprayer makes an excellent way to add the small amounts of C-41L needed directly to the mixer.

PHYSICAL PROPERTIES Appearance: Absolute volume: Density: Solubility in Water: Flash point:

Clear, colorless liquid 0.139 gal/lb 7.2 lb/gal Partial 54 deg F

PACKAGING

Chemplex C-41L contains an organic defoamer in an alcohol-based carrier.

Chemplex C-41L is furnished in 5-gallon pails and 55-gallon poly drums. The US DOT classifies it as a Flammable Liquid, nos., (Contains methyl alcohol), 3, UN 1993, PG II.

LIMITATIONS

AVAILABILITY

None known.

Chemplex C-41L is available from Chemplex, Ltd. at any of our stocking locations.

CHEMICAL DESCRIPTION

Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-41P Cement Defoamer

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-41P is a powdered defoamer for all types of oil well cement.

Chemplex C-41P is normally effective at loadings of 0.1 to 0.25 pounds per sack of cement. The higher loadings as usually needed only in very foamy slurries, such as highbentonite or high-salt designs. C-41P is normally dry-blended into the cement.

PHYSICAL PROPERTIES Specific gravity: Appearance: Absolute volume: Bulk Density: Solubility in Water:

2.7 White powder 0.0444 gal/lb 60 lb/cu.ft. Insoluble

PACKAGING Chemplex C-41P is furnished in 50-pound bags.

CHEMICAL DESCRIPTION

AVAILABILITY

Chemplex C-41P contains silicone-based defoamers on an inert, inorganic carrier.

Chemplex C-41P is available from Chemplex, Ltd. at any of our stocking locations.

LIMITATIONS

Updated 10-29-08

None known.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-42P Cement Defoamer

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-42P is a powdered defoamer for all types of oil well cement.

Chemplex C-42P is normally effective at loadings of 0.1 to 0.25 pounds per sack of cement. The higher loadings as usually needed only in very foamy slurries, such as highbentonite or high-salt designs. C-42P is normally dry-blended into the cement.

PHYSICAL PROPERTIES Specific gravity: Appearance: Absolute volume: Bulk Density: Solubility in Water:

2.7 White powder 0.0444 gal/lb 60 lb/cu.ft. Insoluble

CHEMICAL DESCRIPTION Chemplex C-42P contains phosphate-based defoamers on an inert, inorganic carrier.

LIMITATIONS None known.

PACKAGING Chemplex C-42P is furnished in 50-pound bags. The product may be irritating to the skin or if dust is inhaled. Read the MSDS before use and wear proper PPE.

AVAILABILITY Chemplex C-42P is available from Chemplex, Ltd. at any of our stocking locations. Updated 8-10-09

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd. Product Bulletin

Chemplex C-43L Thixotropic Agent

GENERAL INFORMATION

LIMITATIONS

Chemplex C-43L is a thixotropic additive for all types of oil well cement. It offers an economical alternative, in an economical liquid form, to gypsum in this application.

Chemplex C-43L is a moderately strong accelerator for cement and may require the use of retarders at circulating temperatures over 100 degrees F. The use of dispersants in C-43L slurries may reduce the thixotropy of the cement, and should be avoided.

PHYSICAL PROPERTIES Appearance: Absolute volume: Density: Solubility in Water: Flash point:

Clear liquid 0.0817 gal/lb 12.2 lb/gallon. Soluble None

CHEMICAL DESCRIPTION Chemplex C-43L is a 38% solution of Chemplex C-43 in water. This is equivalent to 4.5 lb dry C43 per gallon.

RECOMMENDED USES Chemplex C-43L is normally effective at loadings of 0.15 to 0.35 gallons per sack of cement. The table on the back of this page shows some example slurry designs.

PACKAGING Chemplex C-43L is furnished in 55-gallon poly drums. The US DOT classifies it as Corrosive liquid, nos.

AVAILABILITY Chemplex C-43L is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

C-43L in Class H Cement Slurries 4.9 gal/sk fresh water, 15.7 lb/gal, yield 1.17 Static Temperature 110°F 140°F 170°F

Circulating Temperature 91°F 103°F 113°F

gal/sk C-43L 0.15 0.20 0.22

lb/sk C-26 0.00 0.05 0.08

Approximate Thickening Time 2:45 2:45 4:00

7.55 gal/sk, 14.0 lb/gal, yield 1.51 200°F 230°F

140°F 167°F

0.17 0.33

0.15 0.20

2:45 3:15

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-43P Thixotropic Agent

Product Bulletin

GENERAL INFORMATION

LIMITATIONS

Chemplex C-43P is a powdered thixotropic additive for all types of oil well cement. It offers an economical alternative to gypsum in this application.

Chemplex C-43P is a moderately strong accelerator for cement and may require the use of retarders at circulating temperatures over 100 degrees F. The use of dispersants in C-43 slurries may reduce the thixotropy of the cement, and should be avoided.

PHYSICAL PROPERTIES Specific gravity: Appearance: Absolute volume: Bulk Density: Solubility in Water:

2.3 White powder 0.0522 gal/lb 52 lb/cu.ft. Soluble

CHEMICAL DESCRIPTION Chemplex C-43P is a highly alkaline blend of inorganic salts.

RECOMMENDED USES Chemplex C-43P is normally effective at loadings of 0.7 to 1.5 pounds per sack of cement. The table below shows some example slurry designs.

PACKAGING Chemplex C-43P is furnished in 55-pound plastic bags. Opened bags should be tightly closed to prevent caking of product.

AVAILABILITY Chemplex C-43P is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

C-43P in Class H Cement Slurries 5.0 gal/sk fresh water, 15.7 lb/gal, yield 1.17 Static Temperature 110°F 140°F 170°F

Circulating Temperature 91°F 103°F 113°F

lb/sk C-43P 0.7 0.9 1.0

lb/sk C-11 0.00 1.10 0.15

Approximate Thickening Time 2:45 2:45 4:00

7.7 gal/sk, 14.0 lb/gal, yield 1.51 200°F 230°F

140°F 167°F

0.75 1.50

0.30 0.40

2:45 3:15

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-44 Expansive Agent

Product Bulletin

GENERAL INFORMATION Chemplex C-44 is a powdered additive, which provides expansion during set for all types of oil well cement. It can be used both to improve cement bond to pipe and to combat gas migration.

PHYSICAL PROPERTIES Specific gravity: Appearance: Absolute volume: Bulk Density: Solubility in Water:

4.5 Grey, heavy powder 0.0267 gal/lb 88 lb/cu.ft. Insoluble

CHEMICAL DESCRIPTION Chemplex C-44 is a finely powdered reactive metal blended with a reaction-moderating inorganic salt.

LIMITATIONS Chemplex C-44 functions by generating highly flammable hydrogen gas as the cement slurry sets. Caution should be taken to keep sources of ignition away when mixing, placing, or drilling out C-44 slurries.

Some cements and pozzolans with higher-thanaverage alkali content will react fairly rapidly with C-44, causing early expansion. This is often only a problem in cup samples, which will “puff up” and set poorly. DO NOT attempt to catch samples in a sealed container, as enough pressure may develop to burst the container.

RECOMMENDED USES Chemplex C-44 is normally effective at loadings of 0.4 to 1.5 pounds per sack of cement. Higher loadings are normally used for deeper wells, as more gas must be generated under higher hydrostatic pressure to give proper expansion.

PACKAGING Chemplex C-44 is furnished in 50-pound lined boxes. Opened containers should be tightly closed to preserve integrity of product.

AVAILABILITY Chemplex C-44 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-45 Suspension Aid

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-45 is a suspension aid for preparing lightweight slurries from all types of oil well cement. It may also be used as an accelerator.

Chemplex C-45 is normally effective at loadings of 1 to 3 pounds per sack of cement. A table with suggested loadings for several lightweight designs is on the back of this page. C-45 is normally dry-blended into the cement, but may be prehydrated IF a portion of the cement is mixed into the water BEFORE the C-45 is added. If the C-45 is added first, it will not provide good suspension.

PHYSICAL PROPERTIES Specific gravity: Appearance: Absolute volume: Bulk Density: Solubility in Water:

2.4 White granules 0.0499 gal/lb 70 lb/cu.ft. Soluble

Chemplex C-45 contains alkali silicates.

C-45 can be used as an accelerator for cements containing C-11 or other retarding additives by taking advantage of this; prehydrating C-45 in clean mix water will allow slurries to be mixed at or near normal density.

LIMITATIONS

PACKAGING

Chemplex C-45 is an accelerator, and slurries using it may be difficult to retard at temperatures above about 140 degrees unless special attention is given to slurry design.

Chemplex C-45 is furnished in 50-pound bags.

CHEMICAL DESCRIPTION

AVAILABILITY Chemplex C-45 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

C-45 in some typical West Texas cements

Cement Class H H H H A A A A

gal/sk Water 8.0 10.0 12.0 17.5 7.9 10.0 12.4 17.5

Slurry Yield Density lb/gal cu.ft./sk 13.8 1.55 13.0 1.81 12.4 2.07 11.4 2.81 13.9 1.53 13.0 1.81 12.3 2.14 11.4 2.81

lb/sk C-45 1.0 1.5 2.0 3.0 1.0 1.5 2.0 3.0

72 Hour Strength 80°F psi 1180 840 620 160 1640 1210 930 315

Free Water percent 0 0 0 0.3 0 0 0.2 0.4

Class C mixed according to the schedule for Class A above will give considerably better strength. Also, addition of salt at 5 lb/sack to any of the above slurries will give faster strength development. The use of calcium chloride with C-45 offers no real advantage in quickness of set, and so is not recommended.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-47 Gas Migration Agent

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Chemplex C-47 is a powdered additive which provides control of gas migration after cementing through two mechanisms: fluid loss control and increased cement fluidity.

Chemplex C-47 is normally effective at loadings of 0.4 to 1.5 pounds per sack of cement. Loadings of 1.0 lb/sk typically give fluid loss values below 60cc/30 min in normal-weight slurries. C-47 is mildly retarding in most situations.

PHYSICAL PROP ERTIES Specific gravity: Appearance: Absolute volume: Solubility in water:

1.53 Reddish powder 0.0782 gal/lb Complete

CHEMICAL DESCRIPTION Chemplex C-47 is a blend of synthetic polymers with dispersing and fluid-loss control properties.

LIMITATIONS Chemplex C-47 should not be used in slurries with over 18% salt, or with over 0.5% Chemplex C-24.

PACKAGING Chemplex C-47 is furnished in 25-pound lined bags. Opened containers should be tightly closed to preserve integrity of product.

AVAILABILITY Chemplex C-47 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-51 Suspension Additive

Product Bulletin

GENERAL INFORMATION Chemplex C-51 is a polymeric additive designed to help control free water and to suspend solids in cement slurries, particularly at higher temperatures where metasilicate products are difficult to retard. C-51 also gives some fluid loss control in most applications.

PHYSICAL PROPERTIES Specific gravity: Absolute volume: Appearance: Solubility in water:

1.40 .0857 gal/lb Off white powder Limited by viscosity

CHEMICAL DESCRIPTION Chemplex C-51 contains high molecular weight cellulose derivatives formulated to give rapid viscosity development in cement slurries.

LIMITATIONS Chemplex C-51 is a moderately strong retarder at temperatures below 140°F or so; slurries below

this temperature may be simpler to design with an alternate product such as Chemplex C-45.

RECOMMENDED USES Chemplex C-51 should be dry-blended into cement at loadings ranging from 0.2 to 1.0% by weight of cement. Loadings near the top of this range can be used in slurries as light as 12.5 lb/gallon. C-51 is compatible with most, if not all, common cement additives and with all classes of oil well cement. A few example slurries are given in the table on the back of this bulletin.

PACKAGING Chemplex C-51 is supplied in 50-pound bags.

AVAILABILITY Chemplex C-51 is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

C-51 Suspending Agent - Example Slurries Class H Cement Slurry Density

Mix Water

C-51 Loading

Free Water

24-Hour Strength 190°

12.5 lb/gal

11.5 gal/sk

0.9%

0%

220 psi

13.0 lb/gal

10 gal/sk

0.5%

0.2%

890 psi

13.4 lb/gal

8.9 gal/sk

0.3%

0%

1020 psi

All had fluid loss below 200 cc/ 30 minutes at 140° F.

Chemplex, Ltd.

Chemplex C-53L Diesel Cement Additive

Product Bulletin

GENERAL INFORMATION Chemplex C-53L is a surfactant designed to allow mixing of cement slurries in diesel oil. These slurries will not set until contacted by water, and so can be used in a variety of remedial work in oil and gas wells.

PHYSICAL PROPERTIES Density: Appearance: Flash Point: Solubility in Water: Solubility in diesel:

7.6 lb/gallon dark brown liquid 57 deg F Dispersible Complete

CHEMICAL DESCRIPTION Chemplex C-53L is a strongly cationic, oilsoluble surfactant/dispersant in an alcohol base.

LIMITATIONS Chemplex C-53L is designed to be used in cement slurries made with dry diesel or kerosene. It should not be used with slurries containing either bentonite (gel) or pozzolan.

This type of slurry can then be used to squeeze a wet zone or hole in pipe, regardless of depth. As the slurry contains no water, it will not set until it contacts some. Once contact with water occurs, the C-53L helps draw water into the slurry. This results in an immediate thickening to a pasty consistency, followed by the cement setting. A 24-hour WOC time is normally advised to insure that enough water absorbs into the slurry to give good strength development. A suggested placement procedure for diesel/cement slurries is to pump 3 to 5 barrels of dry diesel through the mixer and down the well to remove any water; mixing will be VERY difficult if the slurry is contaminated with water. Then mix and pump the slurry, displacing with diesel or clean crude oil. Unset, undisplaced slurry can be reversed out. The only additives that are really useful in diesel/cement slurries are calcium chloride at 1 to 2% or gypsum at 10 to 25%. These can give quicker strength development. Retarders, etc., serve no real purpose in diesel, as no set is possible until water is encountered anyway.

PACKAGING RECOMMENDED USES Chemplex C-53L is normally added to dry diesel oil or kerosene at a loading of 1.0 gallon per hundred gallons of oil. This mixture is then used to prepare a cement slurry, most typically at 5.0 or 6.0 gallons per sack of cement. These two mixing ratios give a 15.1 lb/gal slurry at a yield of 1.15 cu.ft./sk and 14.3 lb/gal and 1.28 cu.ft./sk, respectively.

Chemplex C-53L is supplied in 5-gallon pails or 55-gallon drums. It is regulated by the US DOT as a Flammable liquid, nos.

AVAILABILITY Chemplex C-53L is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Chemplex C-63 Cement Spacer Mix

Product Bulletin

GENERAL INFORMATION

SUGGESTED APPLICATIONS

Chemplex C-63 is a prepackaged mix to prepare cement spacers with densities from 9 lb/gal to as high as 18 lb/gal. It is normally mixed into fresh or salt water at the ratio of one 50-lb sack per barrel of finished spacer, with readily available weighting agents being used to achieve the desired density. The resulting fluid are fairly low in viscosity, stable to at least 300º F, and can be modified with surfactants to give good performance in displacing oil-based muds.

The attached charts give guidelines on mixing procedures for C-63. The product should always be added to water with good agitation, and mixed for at least five minutes to allow for full hydration before adding the weighting material.

PHYSICAL PROPERTIES Specific gravity: Absolute volume: Appearance: Odor:

2.24 0.0536 gal/lb light tan powder none

CHEMICAL PROPERTIES Chemplex C-63 contains suspension aids and a defoamer in a graded calcium carbonate base. The product does not contain silica flour or other crystalline silica at above trade levels.

AVAILABILITY Chemplex C-63 is packaged in 50-pound lined paper sacks and is available from Chemplex, Ltd. at any of our stocking locations. Updated 10-29-08

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

C-63 Densities Using Silica Flour (or Graded Calcium Carbonate) To make one barrel spacer.

Desired Density

bbl Water

lb C-63

9 lb/gal 10 lb/gal 11 lb/gal 12 lb/gal 13 lb/gal

0.936 0.858 0.781 0.704 0.626

50 50 50 50 50

lb Silica Flour 0 72 143 214 285

*calcium carbonate will give very slightly higher densities.

C-63 Densities using Barite Desired Density

bbl Water

lb C-63

lb Barite

11 lb/gal 12 lb/gal 13 lb/gal 14 lb/gal 15 lb/gal 16 lb/gal 17 lb/gal 18 lb/gal

0.859 0.821 0.783 0.745 0.707 0.669 0.631 0.593

50 50 50 50 50 50 50 50

114 170 226 282 339 395 452 508

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Silica Flour Strength Stabilizer

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Silica Flour is used in oilwell cement whenever the cement will be exposed to temperatures of 230⁰F or higher. It prevents the loss of strength, or retrogression, that oilwell cement would otherwise experience at these temperatures.

Silica Flour is typically added at 35% by weight of cement for slurries to be used from 230⁰F to 450⁰F. Normal water requirement is 40% by weight of silica flour (or 1.58 gal/sack at this 35% loading).

PHYSICAL PROPERTIES

PACKAGING

Specific gravity: Appearance: Absolute volume: Bulk Density: Solubility in Water:

Silica Flour is furnished in 50 pound bags.

2.63 White powder 0.0456 gal/lb 70 lb/cu.ft. Insoluble

AVAILABILITY Silica Flour is available from Chemplex, Ltd. at any of our stocking locations.

CHEMICAL DESCRIPTION

Updated 5-14-09

Silica Flour is finely ground silica sand.

LIMITATIONS None known.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Sodium Silicate

Product Bulletin

GENERAL INFORMATION Sodium Silicate is a highly cost-effective chemical for a variety of oilwell uses where cement alone is not quite the right answer. Sodium silicate has a long history of successful field application in: • Improving cement-to-pipe and cement-to-formation bonding. • Stopping lost circulation • sealing casing leaks. • Shutting off bottom water or thief zones. This bulletin will outline some suggested uses for this versatile product; contact Chemplex or your service company representative for specifics on particular applications

PHYSICAL PROPERTIES Density: Solubility in water: Solubility in diesel: Appearance: Odor: pH: Flash point:

11.7 lb./gal Soluble Insoluble Clear to hazy viscous liquid None around 11 30-35° F

CHEMICAL DESCRIPTION Sodium silicate is furnished as a 40% active solution containing sodium polysilicates in water. It is highly reactive with cement slurries, acids, or salts, particularly calcium or magnesium salts. Sodium silicate should be protected from freezing, as it will occasionally separate and become unusable if frozen and then thawed.

LIMITATIONS There are no particular temperature limitations on the use of sodium silicate in properly designed applications. Unintentional mixing of

sodium silicate with incompatible materials will cause a variety of major headaches; the procedures below point out ways to avoid these problems. Fresh water must always be used to separate sodium silicate from incompatible materials during placement.

RECOMMENDED USES A. As a cement preflush Sodium silicate is frequently used as a preflush ahead of primary cement jobs. It can improve cement bonding and aid in preventing cement “fallback” in many areas. A typical procedure where lost circulation is not a major concern is as follows: 1. Pump at least 10 barrels of fresh water, diesel, or other compatible spacer 2. Pump a solution of one part sodium silicate dissolved in four parts fresh water. Best mud displacement and boding are normally seen when the volume of this mixture is enough to give at least 5 minutes contact time with the formation during placement; for instance, if you mix and displace cement at 6BPM, use 30 barrels of this silicate solution 3. Pump a fresh water spacer large enough to give at least 125 feet of fill downhole. Always use at least 3-5 barrels of fresh water to avoid leaving solids in pumps, lines, or pipe.

4. Pump at least 10 barrels of fresh water, diesel, or other compatible spacer B. For lost circulation Sodium silicate’s high reactivity with calcium in brines is used to build a barrier of “petrified cottage cheese” in lost circulation zones. If formation

fluids are not very salty, with high calcium content, it is strongly recommended that calcium chloride brine preflush, as outlined below, be used. 1. . Pump at least 20 bbl of a 10% calcium chloride solution (35 lb dry calcium chloride per barrel of fresh or field salt water) to the loss zone. 2. Pump a spacer of 3 to 5 barrels fresh water 3. Pump at least 10 barrels of sodium silicate; use the straight material for severe losses, or mix half-and –half with fresh water if less that total lost circulation. 4. Pump another 3 to 5 barrels fresh water spacer; displace to loss zone with salt water or mud. Local experience may indicate that repeated stages of (1) through (4), with smaller volumes of calcium chloride solution in (1), may be more effective in stopping losses. 5. Optionally, a squeeze with cement containing bridging agents such as gilsonite may be run after step 4. The cement should flash-set on contacting sodium silicate in the formation. C. Sealing Casing Leaks Moderate to severe casing leaks can frequently be permanently repaired with a procedure similar to the lost circulation procedure above. Volumes used will vary widely depending on casing size and other local conditions. The big advantage of sodium silicate over cement in repairing casing leaks is that the silicate contains no solid particles to bridge off at the leaks. This lets sealant get outside the leak, where it is actually needed. A cement squeeze behind the silicate treatment is optional, depending on local experience and severity of the leak.

D

.

BOTTOM-WATER SHUT OFF If a reasonable guess can be made as to the point-of-entry of bottom water, the lost-circulation procedure above can also be modified to provide a permanent shut-off. Care needs to be taken to avoid placing sodium silicate in productive zones, as it is very difficult to remove once it is set. A generalized method for water shutoff might be: 1. Pull production equipment. Set a packer or cement retainer immediately above the wet zone, or perforate into the water below existing perforations. Test for injectivity into both the wet zone and the producing zone, using formation-compatible fluids. 2. Pump a formation-compatible fluid such as formation brine, clean crude oil, or diesel down the backside while pumping 10-20 bbl 10% calcium chloride brine down tubing into the wet zone. Continue injection, into the productive zone throughout the entire procedure. 3. Follow the calcium chloride brine with a 3 to 5 barrel freshwater spacer 4. Pump 10 to 20 bbl sodium silicate, either straight or mixed 1:1 with fresh water. 5. Displace the silicate to the wet formation; again, local experience may determine whether a cement squeeze should follow the silicate treatment. If cement is run, a 3-5 bbl fresh water spacer is all that is required to separate step (4) from the cement. 6. Allow normal WOC time before returning well to production.

Chemplex, Ltd. Product Bulletin

Chemplex Stop Loss Spacer “Loss Circulation Spacer for Cementing and Drilling”

GENERAL INFORMATION

CHEMICAL DESCRIPTION

Chemplex Stop Loss Spacer is an industry proven, highly effective spacer used to control moderate to severe loss circulation during cementing and drilling. Chemplex Stop Loss Spacer is composed of Stop Loss Polymer and Stop Loss LCM and when mixed is a dark brown moderately viscous fluid. Conventional weighting agents such as barite and hematite can be used to weight the Stop Loss Spacer to 18.0 ppg.

Chemplex Stop Loss Spacer incorporates Stop Loss Polymer, a non-hazardous highly bio-degradable proprietary patented of polymeric fluid loss additives. Stop Loss LCM is added where moderate to severe loss circulation is experienced and is a patented blend of highly specific lost circulation additives that target and control loss circulation. Stop Loss Spacer utilizes a specialized surfactant to water wet the formation when used with oil based or invert muds.

During cementing, the Stop Loss Spacer is pumped directly ahead of the cement to stop mud losses, attain higher cement tops and more consistent anticipated “top of cement”. The Stop Loss Polymer has a “wall building” capability to help consolidate loose, fragile or fractured formation strata and hole condition. The Stop Loss LCM is added where moderate to severe loss circulation is experienced. The Stop Loss Spacer is also an effective cement spacer used to displace drilling mud prior to cementing for improved cement bonding and subsequent bond logs. Where oil based or invert muds are displaced, surfactants are utilized to water wet the formation and pipe surfaces for enhanced bonding. During drilling where severe to total loss circulation is experienced, the Stop Loss Spacer, containing the Stop Loss Polymer and LCM, is pumped into the drill string and circulated until the losses are controlled and drilling can resume to the desired depth (TD).

LIMITATIONS

PHYSICAL PROPERTIES Stop Loss Specific Gravity: Water Solubility: Oil Solubility: Appearance:

Polymer 1.2 Dispersible Dispersible Light brown powder

LCM 1.4-1.65 Dispersible Dispersible Light brown fibrous powder

Chemplex Stop Loss Spacer can be removed by fresh water. Fresh water spacers should not be pumped between the cement slurry and Stop Loss Spacer. Limit washing-up to 1 bbl to 2 bbls of fresh water. Stop Loss Spacer is not compatible with other spacers when pumped between the Stop Loss Spacer and cement although; spacers may be pumped ahead of the Stop Loss Spacer. Special water-wetting surfactants are utilized when displacing oil based or invert muds. Once the Stop Loss Spacer has stopped the loss circulation, maintain a positive wellbore pressure to maintain the Stop Loss Spacer seal. Avoid reducing the wellbore pressure (HH) to less than the formation pressure (underbalanced) where the Stop Loss Spacer can unseal and revert to loss circulation.

RECOMMENDED USES Chemplex Stop Loss Spacer is used eliminate or significantly reduce loss circulation during cementing or drilling. Stop Loss Spacer is used where a “wall building” polymer is needed to consolidate weak, loose or fragile formation strata or hole condition. Stop Loss Spacer is used to sustain a higher and more consistent “Top of Cement” thereby reducing remediation costs. Stop Loss Spacer is also used as a spacer to efficiently displace drilling mud to enhance cement to pipe and cement to formation bonding.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex Stop Loss Spacer typical loadings include a base of Stop Loss Spacer Polymer that can be modified according to the severity of the loss circulation problem. Stop Loss Spacer LCM is used when moderate to severe loss circulation (total losses) problems are encountered and vary according to the severity of the loss circulation. Stop Loss Spacer can be used to 350F+ BHCT.

Created 03-03-2011 Updated 04-25-2011 Updated 09-07-2011

PACKAGING Chemplex Stop Loss Spacer packaging normally include Stop Loss Polymer in 40 lb bags and Stop Loss LCM also in 40 lb bags. Bag weights can vary according to customer specifications.

AVAILABILITY Chemplex Stop Loss Spacer is available from Chemplex, Ltd. and any of Chemplex’s stocking locations and include Breckenridge, Kilgore, Midland, Pleasanton and Snyder, Texas, Arapaho, Oklahoma and Albright, West Virginia.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex

Chemplex, Ltd. Product Bulletin

Plexcrete SFA

Silica Fume Alternative for Cement Systems & Cements

GENERAL INFORMATION

RECOMMENDED USES

Chemplex Plexcrete SFA is an industry proven substitute for the silica fume in silica fume cements used for its increased handling ease and safety. Plexcrete SFA, when used in the same concentrations as silica fume and mixed at the same density attains near identical compressive strengths as silica fume in cements. Plexcrete SFA can be blown directly into a silo without the expensive blending that is required with silica fume such as Silica-Poz, Silica-Blend, SilicaLite, etc. Plexcrete SFA is a lower cost alternative to silica fume that is specifically formulated to produce performance and consistency without the TTT variations of the silica fume “byproduct”. Plexcrete SFA is a highly specialized blend of silica, metals and inorganic salts fired in a kiln for a product quality that conforms to ASTM specifications. Plexcrete SFA is a highly specific formulation that does not require the extremely fine particle size of silica fume to develop the compressive strength of fume cements. Plexcrete SFA provides increased safety, direct pneumatic transfer to the silo, product consistency and reduced cost with the high compressive strength development of fume cements.

Chemplex Plexcrete SFA is used to replace silica fume or flyash:silica fume blends in cement systems that have historically utilized silica fume. Plexcrete SFA replaces silica fume pound for pound in cement systems such as:

Chemplex Plexcrete SF uses and benefits: 1. Industry proven replacement for silica fume. 2. Used in oil field cementing since 2004. 3. Significantly less hazardous than silica fume. 4. Develops the near identical 72 hr compressive strengths as silica fume in fume cements. 5. Lowers the cost of silica fume in cements. 6. Can be blown directly into the cement silos. 7. Silica fume and fly-ash blends are not needed. 8. Mined and manufactured to ASTM standards. 9. Allows use of lightweight completion cements. 10. Used with fly-ash to control final slurry costs. 11. SMS, HEC & Salt are commonly used to control Total Thickening Times & Fluid Loss. 12. Compatible with most cement additives.

PHYSICAL PROPERTIES

LIMITATIONS

Specific Gravity: Bulk Density: Absolute Volume:

Chemplex Plexcrete SFA when used as a replacement for silica fume will yield slightly lower slurry viscosity, slightly longer Total Thickening Times, and slightly higher fluid loss. The use of low concentrations of sodium metasilicate (SMS), i.e., 0.1%, etc., will increase the slurry viscosity and reduce the Total Thickening Times to nominal values. Cellulose fluid loss additives can be used to obtain the desired fluid loss and Total Thickening Times per customer specifications. Plexcrete SFA is compatible with most cement additives. Slurry performance data is included in the attached Technical Information.

2.30 33 lb/cubic foot 0.0521 gallon/pound

CHEMICAL DESCRIPTION Chemplex Plexcrete SFA incorporates a proprietary blend of silica, iron and inorganic salts fired in a kiln to exacting ASTM specifications (ASTM C-188, ASTM C-227, ASTM C-311, ASTM C-430, ASTM C-1012 and ASTM C-1260). ASTM particle specifications require 76% pass through a 325 (45 um) sieve.

Fly-Ash 15 lbs 20 lbs 17 lbs

Class C 61 lbs 47 lbs 70 lbs

Plexcrete SFA 11 lbs 17 lbs 13 lbs

Density 13.0-14.5 ppg 12.0-13.6 ppg 12.0-12.5 ppg

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

PACKAGING

Created 03-03-2011 Updated 03-03-11

Chemplex Plexcrete SFA is delivered in bulk in a pneumatic transport or 50 pound sacks.

AVAILABILITY Chemplex Plexcrete SFA is available from Chemplex, Ltd. and any of Chemplex’s stocking locations and include Breckenridge, Kilgore, Midland, Pleasanton and Snyder, Texas and Arapaho, Oklahoma.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

TECHNICAL INFORMATION PLEXCRETE SFA AND SILICA FUME COMPARISON BHCT (F)

BHST (F)

Depth (Ft)

TTT (hr:min)

SLURRY

% Mix H2O

Wgt (ppg)

Yld (cuft/sk)

Strength (psi)

Fluid Loss

Free H2O

140

155

10000

3:51

15:61:11 (Flyash:Class C:Plexcrete SFA) + 0.9% FLA + 0.25% CD + 3% KCl + 5 pps LCM

72.8

13.2

1.60

(155F) 12 hr-400 24 hr- 1600 72 hr-2350

102

0.0

72.8

13.2

1.60

(155F) 12 hr-500 24 hr- 1900 72 hr-2380

80

0.0

(Plexcrete SFA) 140

155

10000

3:49

15:61:11 (Flyash:Class C:Silica Fume) + 0.9% FLA + 0.25% CD + 3% KCl + 5 pps LCM

(Silica Fume)

ASA: Anti-Settling Agent, CD: Cement Dispersant, FLA: Fluid Loss Additive, LCM: Lost Circulation Material, PVA: Poly Vinyl Alcohol FLA. Compressive strengths ran at BHST unless otherwise specified.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

TECHNICAL INFORMATION BHCT (F)

BHST (F)

Depth (Ft)

TTT (hr:min)

140

160

10000

4:40

135

160

12000

3:45

130

150

9000

3:20

100

120

5200

4:50

105

115

5000

90

100

80

80

CLASS C CEMENT Slurry

% Mix H2O 74.75

Wgt (ppg)

Yld (cuft/sk)

13.20

1.64

72.80

13.20

1.60

201.10

11.30

3.80

50:50:0 (Flyash:Class C:Bentonite) + 10 pps Plexcrete SFA + 1% SMS + 3% Salt +0.4% Retarder + 5 pps LCM

129.90

11.80

2.39

3:30

17:70:13 (Flyash:Class C:Plexcrete SFA) +0.4% PVA + 0.5% SMS + 5% Salt + 0.2 gps Foamer

99.60 (base)

12.50 (base)

2.22 (base)

2000

4:45

20:47:17 (Flyash:Class C:Plexcrete SFA + 1.5% FLA + 0.2% SMS

77.25

13

1.55

3000

11:30

15:61:11 (Flyash:Class C:Plexcrete SFA) + 0.8% FLA + 0.5% PVA + 0.2% CD + 0.5% SMS + 5% Salt + 3 pps LCM

77.21

13.20

1.65

15:61:11 (Flyash:Class C:Plexcrete SFA) + 0.9% FLA + 0.5% PVA + 0.25% CD + 5% Salt + 0.6% Retarder + 5 pps LCM 15:61:11 (Flyash:Class C:Plexcrete SFA) + 1.1% FLA + + 0.5% PVA + 0.5% CD +2% Salt + 026% Retarder + 5 pps LCM Class C + 20 pps Plexcrete SFA + 4% Plexcrete STE + 4% SMS + 5% Gypsum + 0.4% ASA + 2.5% Retarder + 3 pps LCM

Strength (psi) 12 hr-90 24 hr-450 72 hr-2050 12 hr-600 24 hr-1800 72 hr-2300 (120F) 12 hr-250 24 hr-400 72 hr-850 12 hr-250 24 hr-500 72 hr-1000 (10 ppg) 12 hr-170 24 hr-250 72 hr-450 12 hr-230 24 hr-350 72 hr-750 (80F) 12 hr-0 24 hr-400 72 hr-1500

Fluid Loss

Free H2O

40

0.0

30

0.0

ASA: Anti-Settling Agent, CD: Cement Dispersant, FLA: Fluid Loss Additive, LCM: Lost Circulation Material, PVA: Poly Vinyl Alcohol FLA. Compressive strengths ran at BHST unless otherwise specified.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

0.0

3.4

0.0

0.0

TECHNICAL INFORMATION

CLASS H CEMENT

BHCT (F)

BHST (F)

Depth (Ft)

TTT (hr:min)

200

245

16500

5:50

15:61:11 (Flyash:Class H:Plexcrete SF) + 5 PPS Silica Sand + 1% FLA + 0.3% PVA + 0.2% SMS + 0.3% ASA + 0.2% Retarder

200

240

16500

5:00

200

245

16500

6:40

130

150

8500

145

145

10000

4:40

Slurry

% Mix H2O 69.30

Wgt (ppg)

Yld (cuft/sk)

Strength (psi)

Fluid Loss

Free H2O

13.70

1.50

50

0.0

Class H + 35% Silica Sand + 20 pps Plexcrete SFA + 0.9% FLA + 0.5% PVA + 1% CD + 0.5% SMS + 0.3% ASA + 0.5% Retarder

67.97

15.20

1.88

35:65:6 (Flyash:Class H:Bentonite) + 5 pps Plexcrete SFA + 0.8% FLA + 0.2% SMS + 0.3% ASA + 0.4% Retarder

106.1

12.50

2.04

20:47:17 (Flyash:Class H:Plexcrete SFA) + 1% PVA + 1% SMS + 0.2% ASA + 0.6% Retarder

91.53

12.5

1.75

20:47:17 (Flyash:Class H:Plexcrete SFA) + 1.5% SMS + 0.2% ASA + 1.65% Retarder + 3 pps LCM

106.5

12.00

2.00

(245F) 12 hr-1500 24 hr-1750 72 hr-2000 (200F) 12 hr-250 24 hr-2200 72 hr-2600 (220F) 12 hr-7500 24 hr-950 72 hr-1050 (140F) 12 hr-175 24 hr-978 72 hr-1400 (145F) 12 hr-125 24 hr-705 72 hr-1100

0.0

350

ASA: Anti-Settling Agent, CD: Cement Dispersant, FLA: Fluid Loss Additive, LCM: Lost Circulation Material, PVA: Poly Vinyl Alcohol FLA. Compressive strengths ran at BHST unless otherwise specified.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

0.0

Chemplex

Chemplex, Ltd. Product Bulletin

Plexcrete STE

Compressive Strength Enhancing Additive for Cement

GENERAL INFORMATION

RECOMMENDED USES

Chemplex Plexcrete STE is a non-silicate compressive strength enhancing additive for cements and cement blends where higher compressive strengths are desirable. Slurry yields can be extended and densities reduced while still obtaining higher compressive strengths considered desirable in completion cements. Plexcrete STE was specifically designed to replace competitive type products at a much reduced cost while providing the same functionality. Plexcrete STE’s non-silicate chemistry performs near identically to competitive products at less than 200F and an improved performance at greater than 200F. Safety in handling and loading is greatly improved by the non-silicate based Plexcrete STE. Plexcrete STE is a highly specialized blend of Portland cement, metal oxides, and inorganic salts fired in a kiln to the exacting specifications of ASTM C-114. Plexcrete STE’s highly specific formulation does not require silica fume or other more expensive products to develop higher compressive strengths. Plexcrete STE non-silicate base provides increased safety in handling and loading, product consistency and reduced cost with high performance compressive strength development in Portland Cements and is especially effective in cement and Flyash blends.

Chemplex Plexcrete STE is used increase to increase the compressive strength of cements and cement-flyash blends. Plexcrete STE replaces more expensive additives with a safer non- silica additive with near identical or improved results. Plexcrete STE replaces other aluminum type additives pound for pound:

Chemplex Plexcrete STE uses and benefits: 1. Replaces more expensive strength enhancers. 2. Significantly less hazardous than silica fume. 3. Develops near identical compressive strengths than more expensive additives at 200F or less. 4. Develops higher compressive strengths than more expensive additives at greater than 200F. 5. Especially effective in flyash:cement blends and ideally in 40:60 and 60:40 blends. 6. Lower the cost of using strength enhancers. 7. Mined and manufactured to ASTM standards. 8. Allows use of lightweight completion cements. 9. Compatible with most cement additives, i.e., HEC, PVA, Lignosulfonate retarders, salts etc.

PHYSICAL PROPERTIES

LIMITATIONS

Specific Gravity: Bulk Density: Absolute Volume:

3.049 64 lb/cubic foot 0.0393 gallon/pound

CHEMICAL DESCRIPTION Chemplex Plexcrete STE incorporates a proprietary blend of Portland cement, iron oxides and inorganic salts fired in a kiln to exacting ASTM C-114 specifications. Particle size is 99% through a 325 (45 um) sieve.

Fly-Ash:Class C Plexcrete STE 0: 94 lbs 4%-6% 35:65 4% 40:60 4% 60:40 4%

Density 10.5- 12.0 ppg 12.0-13.0 ppg 13.6-13.8 ppg 13.6-13.8 ppg

Chemplex Plexcrete STE will increase the final slurry cost which can be offset with flyash:cement blends especially 40:60 which may yield lower cementing costs and high compressive strengths that can be used as completion cements. The use of Flyash is beneficial to reducing cement permeability and increasing resistance to corrosive waters, gasses such as H2S, CO2, etc. Plexcrete STE is compatible with most cement additives. Slurry performance data is included in the attached Technical Information.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

PACKAGING

Created 03-16-2011 Updated 03-16-11

Chemplex Plexcrete STE is delivered in 50 pound sacks.

AVAILABILITY Chemplex Plexcrete STE is available from Chemplex, Ltd. and any of Chemplex’s stocking locations and include Breckenridge, Kilgore, Midland, Pleasanton and Snyder, Texas and Arapaho, Oklahoma.

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

TECHNICAL INFORMATION PLEXCRETE STE AND ALUMINUM SILICATE STRENGTH ENHANCER COMPARISON BHCT (F)

160

BHST (F)

Depth (Ft)

TTT (hr:min)

200

12500

3:04

SLURRY

60:40 (Flyash:Class H) + 4% Plexcrete STE + 4% SMS + 0.2% ASA + 0.2% Retarder

% Mix H2O

Wgt (ppg)

Yld (cuft/sk)

67.00

13.6

1.38

Fluid Loss

Free H2O

(200F) 12 hr-1600 24 hr-1800 72 hr-1900

ND

ND

66.20

13.6

1.38

(200F) 12 hr-1550 24 hr-1800 72 hr-2000

ND

ND

62.1%

13.8

1.35

(135F) 12 hr-1300 24 hr-2400 72 hr-3000

ND

ND

61.4%

13.8

1.35

(135F) 12 hr-950 24 hr-2300 72 hr-3000

ND

ND

(Plexcrete STE) 160

200

12500

3:04

60:40 (Flyash:Class H) + 4% Aluminum Silicate + 4% SMS + 0.2% ASA + 0.2% Retarder

(Aluminum Silicate) 125

135

8000

2:45

60:40 (Flyash:Class C) +4% Plexcrete STE + 0.5% PVA + 0.5 pps Salt + 2 pps LCM

(Plexcrete STE) 125

135

8000

2:30

60:40 (Flyash:Class C) +4% Aluminum Silicate + 0.5% PVA + 0.5 pps Salt + 2 pps LCM

(Aluminum Silicate)

Strength (psi)

ASA: Anti-Settling Agent, CD: Cement Dispersant, FLA: Fluid Loss Additive, LCM: Lost Circulation Material, PVA: Poly Vinyl Alcohol FLA. Compressive strengths ran at BHST unless otherwise specified. This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

TECHNICAL INFORMATION CLASS H AND C CEMENTS AND FLYASH BLENDS BHCT (F)

BHST (F)

Depth (Ft)

TTT (hr:min)

160

200

12500

3:04

Slurry

60:40:0 (Flyash:Class H:Bentonite) + 4% Plexcrete STE + 0.4% SMS + 0.2% ASA + 0.2% Retarder

% Mix H2O 66.96

Wgt (ppg)

Yld (cuft/sk)

13.60

1.38

Strength (psi)

12 hr-1600 24 hr-1800 72 hr-1900 130 180 7500 4:40 35:65:4 (Flyash:Class H:Bentonite) + 5% Plexcrete STE 96.0% 12.8 1.94 (120F) + 0.4% FLA + 0.3% CD + 0.6% SMS + 2.5 pps Salt + 24 hr-450 0.4% Retarder + 3 pps LCM 72 hr-1250 7 Day-1700 130 150 9000 4:16 60:40:0 (Flyash:Class H:Bentonite) + 4% Plexcrete STE 62.00 13.80 1.35 12 hr-900 + 0.5% PVA + 0.5 pps Salt + 0.2% Retarder + 2 pps 24 hr-2200 LCM 72 hr-2600 120 135 8000 2:47 60:40:0 (Flyash:Class C:Bentonite) + 4% Plexcrete STE 62.00 13.80 1.35 12 hr-1300 + 0.5% PVA + 0.5 pps Salt + 0.2% Retarder + 2 pps 24 hr-2400 LCM 72 hr-3000 110 130 6000 2:45 40:60:0 (Flyash:Class C:Bentonite) + 4% Plexcrete STE 67.50 13.80 1.43 12 hr-1100 + 0.4% SMS 24 hr-1800 72 hr-2900 100 110 4000 3:20 35:65:0 (Flyash:Class C:Bentonite) + 6% Plexcrete STE 107.0 12.50 2.00 12 hr-650 + 0.2% FLA + 0.85 SMS + 2.8 pps Salt 24 hr-900 72 hr-1300 80 100 1500 5:30 Class C + 6% Plexcrete STE + 3% SMS + 2% CaCl2 144.10 11.80 2.72 12 hr-288 24 hr-475 72 hr-750 ASA: Anti-Settling Agent, CD: Cement Dispersant, FLA: Fluid Loss Additive, LCM: Lost Circulation Material, PVA: Poly Vinyl Alcohol FLA. Compressive strengths ran at BHST unless otherwise specified.

Fluid Loss

Free H2O

ND

ND

ND

ND

ND

1.4

ND

ND

ND

ND

ND

ND

ND

ND

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Plexaid StatFree Antistatic Agent

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

Plexaid StatFree is a powdered additive intended to reduce “static cling” encountered in pneumatic conveying of cement blends, pozzolan or silica fume, frac sand, resin-coated proppants, and similar materials. It can provide improved conveying of these materials by reducing blockages and “wormholing” in bins.

Plexaid StatFree is typically used at 0.02% to 0.05% by weight of the dry material being treated. It should be added to the solids at the earliest opportunity during handling; for example, as the first component in a cement blend. Dosage level will depend on the particular material being treated. It is suggested that 0.05% be used as a starting point, backing off or increasing loading depending on local experience.

PHYSICAL PROPERTIES Solubility in water: Appearance: Odor: Flash point: Ionic Charge:

Insoluble Fine white powder Faintly medicinal None Cationic

PACKAGING Plexaid StatFree is obtainable in 50-pound bags. DOT information: Not Regulated under D.O.T. Dust may be irritating.

CHEMICAL DESCRIPTION Plexaid StatFree contains proven antistatic agents absorbed on an inert non-crystalline silica carrier. At recommended loadings it should not significantly affect the properties of cement slurries or of frac fluids.

AVAILABILITY Plexaid StatFree is available from Chemplex, Ltd. at any of our distribution facilities.

Created 13 August 2010

his information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

Plexfoam C-7 Foamer for Cement

Product Bulletin

GENERAL INFORMATION

TREATING APPLICATIONS

Plexfoam C-7 is a product designed for foaming cement for oilfield applications.

Plexfoam C-7 at loadings of around 0.1 gallon/sack will provide excellent foam stability in normal foamed cement designs. It is widely held to be good practice to avoid the use of dispersants, highly dispersing additives like lignosulfonate retarders, and, of course, defoamers in foamed cement designs. Chemplex C-18 as a fluid-loss additive and Chemplex C-26 as a retarder are suggested to avoid foam stability problems.

PHYSICAL PROPERTIES Density: Absolute volume: Solubility in water: Appearance: Odor: Flash Point: Freeze Point: pH:

8.66 lb/gal 0.115 gal/lb Soluble Yellow liquid Faint rubbing alcohol > 200°F 5°F 5.0 – 7.5

CHEMICAL DESCRIPTION Plexfoam C-7 foamer combines amphoteric and anionic foaming agents in an alcohol/water carrier. As some of the components are ammonium salts, cement slurries containing Plexfoam C-7 may smell like ammonia.

PACKAGING Plexfoam C-7 is obtainable in 55 gallon poly drums or poly totes. DOT information: Not DOT regulated

AVAILABILITY Plexfoam C-7 is available from Chemplex, Ltd. at any of our stocking locations. Updated 4 June 2010

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Chemplex, Ltd.

MC-500 Microfine Cement

Product Bulletin

GENERAL INFORMATION

RECOMMENDED USES

MC-500 is a form of cement with a particle size about one-tenth that of API oilwell cements. This small size makes it very useful for sealing small leaks, a job that can be difficult with conventional cement squeezes.

MC-500 can be mixed according to the following schedule. The sack basis is 55 pounds of product.

PHYSICAL PROPERTIES Specific gravity: Appearance: Absolute volume: Solubility in water:

2.9 Tan powder 0.0414 gal/lb Insoluble; reacts

CHEMICAL DESCRIPTION

Mix water Density 11.0 lb/gal 11.60 gal/sk 11.5 lb/gal 9.31 gal/sk 12.0 lb/gal 7.73 gal/sk

Yield 1.84 cu. ft./sk 1.55 cu. ft./sk 1.33 cu. ft./sk

Examples of some slurries are on the following page. MC-500 should be considered for repair of collar leaks, pinhole leaks in pipe, micro-annulus leaks, or any situation where conventional cement will not penetrate.

MC-500 is a cement prepared from blast-furnace slag. It is chemically similar to a high sulfate resistant (HSR) oil well cement.

PACKAGING

LIMITATIONS

MC-500 is furnished in 55-pound lined bags. Opened containers should be tightly closed to preserve integrity of product.

MC-500 should not be mixed at densities over 12.0 lb/gallon, as it will be very thick above that density. The use of C-35 dispersant at 0.5% to 1% is strongly suggested both for mixability and for best performance in penetrating leaks. MC500 is compatible with most conventional oil well cement additives, though it will require more retarder than conventional cements. Fluid loss additives are not normally used with MC500.

AVAILABILITY MC-500 is available from Chemplex facilities in Snyder, Texas or from any of our stocking locations. Updated 1-18-10

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This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298

Example Slurries with MC-500 Density 11.0 lb/gal 11.5 12.0 11.5

gal/sk 11.6 9.31 7.73 9.31

additives none none none none

temperature 80 F 80 F 80 F 120 F

Strength 24-hour 72-hour 125 psi 225 450 240

185 psi 540 1060 440

-----------------------------------------------------------------------------------------------------------------------------Density 11.5 lb/gal 11.5 12.0 12.0

gal/sk 9.31 9.31 7.73 7.73

additives none 0.27 lb/sk C-35 1.10 lb/sk C-26 0.82 lb/sk C-26 + 0.82 lb/sk C-35

temperature 80 F 80 F 190 F 190 F

thickening time ~6 hr ~7 hr ~3.5 hr ~2.5 hr

This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process. Such information is, the best of our knowledge and belief, accurate and reliable as of the date compiled. However, no representation, warranty or guarantee is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage that may occur from the use of this information nor do we offer any warranty against patent infringement.

Chemplex, Ltd. * P.O. Box 1071 * Snyder, TX 79550 * (325) 573-7298