Salinity Calculator

PPM Notes

Grams/Liter 300000 0.15 0.2 0.3 0.4 250000 0.5 0.6 0.8 2000001 1.5 2 1500003 4 5 6 1000008 10 15 20 50000 30 40 50 60 0 80 100 125 0 150 200 250 300

Gram/Liter to PPM

KPPM Grams/Liter KPPM 150 21.45 20901.99 200 g/L- PPM Calculation 300 400 500 600 800 1000 1500 2000 3000 4000 5000 6000 8000 10000 14900 19900 29000 39000 48000 58000 78000 94000 116000 50 100 150 137000 175000 220000 250000

Poly. (g/L- PPM)

Step 2 - PPM= -0.4526(g/liter)2 + 984.16(g/liter) 200

250

300

350

g/Liter

The sheet helps to calculate the Mud Sample Temperature at 75 DEG F or any other temperature (can be bottom home temperature) so that the correction to TNPH while using Water Based Muds Section 1 calculated the NaCl equivalent in the mud in mg/L based on Cl concentration in Mud. This can be found in the Mud Report from the Mud Section 2 calculates the Mud Salinity in PPM and KPPM. The calculation is based on a polynomial fit derived from the mg/L to PPM converion cha equation is shown on top left and also plots the calculation point. Section 3 calculates the current IDEAL Salinity Computation based on input values of Rm and Temp. These values are measured by the sample u calculated Salinity which is used for environmental correction against the actual Mud Salinity (calculated from NaCl Concentration) Section 4 gives a corrected Mud Resistivity, which when entered in IDEAL will compute the salinity as that of the value obtained from the ion conc

1 Chloride Concentration (Convert mg/L Cl to mg/L NaCl) Chloride Concentration = 13000 mg/L NaCl Concentration = 21450 mg/L 2 Calculate Salinity of Mud in KPPM Mud Salinity = Mud Salinity = Mud Salinity =

21450 20902 20.90

mg/L NaCl PPM kPPM

3 Compare with IDEAL Salinity Calculation from Rm @ Temp Mud Resistivity (Rm) = 0.0120 ohm.m Mud Sample Temperature = 110.0 DEG C R 75 = 0.0347 ohm.m Salinity (IDEAL) = 286.73 kPPM 4 Calculate Rm for Salinity Mud Salinity R 75 Mud Sample Temperature Mud Resistivity @ Temp

g/liter)

= = = =

286.73 0.0347 110.0 0.0120

Source Mud Report

kPPM ohm.m DEG C ohm.m

Measure DMT DEG C Measure DMT DEG F

0.0347 0.0120

Enter R75 as Mud Sample Resistivity 0.0347 and Mud Sample Temperature 75 DEG F OR Mud Resistivity 0.012 ohm.m calculated at the Mud Sample Temperature 110 DEG C above

350

JR edit - extended scales to include 300 g/l, 250 ppm data point. Eq unchanged. home temperature) so that the same can be entered in MWD/LWD Environmental Correction Inits in IDEAL for in the Mud Report from the Mud Engineer the mg/L to PPM converion chart from the IDEAL Salinity calculation by John C Rasmus. The chart with the

s are measured by the sample using the Digital Mud Tester. This serves as a comparison between IDEAL from NaCl Concentration) alue obtained from the ion concentrations