7. Used Drill Pipe Buggy

Section : Rotary Shoulder 4/7

Approval

Subject : Used Drill pipe Inspection

Revision No :

SUBJECT :

Date:1st June 2000

: 3

PTSCOS/06-2000

USED DRILL PIPE INSPECTION.

1.0

This procedure is applicable to the inspection of used ferromagnetic drill pipe and tubing with the Drilcolog portable pipe inspection unit. This procedure is designed to detect transverse service- induced discontinuities and wall reduction in order to classify the tube and tool joints in accordance with API RP7G.

2.0

Interpretation of results from this procedure shall be performed only by certified PTSC OS driil pipe technicians.

3.0

The PTSC OS technician in charge of the inspection job should have a preinspection meeting with the customer representative at the job site. This meeting is designed to discuss inspection standards and procedures. The inspection standards used on the job should be denoted in the tally book and on the inspection summary form.

4.0

Before inspection begins, set up and adequate inspection area and determine an area for placement of rejected and accepted pipe . The customer representative should approve these areas prior to use.

5.0

Roll out an appropriate amount of pipe depending on available rack space and check for straightness. It is recommended

6.0

Steel stencil the following information on the 35 o pin shoulder of each joint : 6.0.1 One or two digits for month of inspection 6.0.2 One digit for year of inspection(last digit) 6.0.3 Drilco stamp – D in oval 6.0.4 One dot for pipe classification 6.0.5 Sequencial joint number EXAMPLE :

2 4

D .

1

On flush OD joints stamp information on pin nose or other suitable low stress area. Sequencial joint number should restart at 1 for each change of size, weight or grade of pipe unless pipe is mixed on the rack. 7.0

Calibrate OD gage and check pipe full length for OD wear. Mark areas of maximum wear on tube. Visually inspect tube for dents, gouges, washes or other damage and mark areas on tube. Recalibrate OD gage every 25 pipe.

8.0

Calibrate ultrasonic wall thickness gage and check for minimum remaining wall in middle of tube or at areas of maximum OD wear. A minimum of four readings 90o apart should be taken in the centre of the tube. Record

Item No : PTSCOS, ROTARY-4/07-6/2000

Page 1 of 4

Section : Rotary Shoulder 4/7

Approval

Subject : Used Drill pipe Inspection

Revision No :

Date:1st June 2000

: 3

PTSCOS/06-2000

minimum remaining wall thickness on pipe and on work copy of Inspection Results Form. 9.0

If dry magnetic particle inspection of the end areas is included in the inspection order, it should be done at this time. Magnetize each end with a 10,000 amp-turn DC coil and apply dry magnetic particles to the pipe OD. Mark any indications on the pipe.

10.0

Set up Jacks and calibrate Drilcolog unit on calibration standard. Recalibration should be performed every time the unit turned on and after 50 pipe have been run continuously. Calibration runs should be made in the forward direction only.

11.0

The following information should be recorded at the start and end of each chart : 11.0.1Customer name 11.0.2Location 11.0.3Size, weight, grade, range, & quantity of pipe 11.0.4Inspector name and date 11.0.5Invoice number 11.0.6Report number Each run must identify the pipe number, pin end and box end. The cause of significant indications should be denoted on the chart. Significant work stoppages or changes in inspectors should also be denoted. At the end of each chart, roll up the chart and denote customer name, invoice number, inspector’s name, date and joint numbers on outside of roll. At the end of the job, charts should be sent to the Inspection Manager along with copies of all reports.

12.0

Perform full length electro-magnetic inspection of each tube. Verify joint number versus chart number on every 10 pipe. Any discontinuities detected should be verified at the time of detection. Verification will include as required : 12.0.1

Visual or dry magnetic particle inspection

12.0.2

Probing of discontinuities if approved by the owner of pipe.

12.0.3

Measurement of depth with pit gage

12.0.4

Ultrasonic wall measurement

12.0.5

Optiscope inspection of ID

Record all discontinuities on chart and on work copy of Inspection Result Form.

Item No : PTSCOS, ROTARY-4/07-6/2000

Page 2 of 4

Section : Rotary Shoulder 4/7

Approval

Subject : Used Drill pipe Inspection

Revision No :

Date:1st June 2000

: 3

PTSCOS/06-2000

13.0

If discontinuities are not rejectable, blemish should be blended into the surrounding area by grinding. Rejectable defects should have a red paint band around the tube on each side of the defect. Longitudinal red lines between the red bands above and below the defect should be applied to highlight the defect.

14.0

Apply paint band color code on OD of tube 2 to 4 feet from pin end per API RP7G. Bands should be 2 inches wide. Color code shalll be as follows : Premum Class

-

2

white bands

Class 2

-

1

yellow band

Class 3

-

1

orange band

Scrap

-

1

red band

If the tube is not premium grade, additional dots will have to be added to the steel stencils on the 35o pin shoulder to indicate appropriate classification. 15.0

If a Type I Inspection is being performed, caliper tool joint OD 1 inch from shoulder. Measure minimum shoulder width. If the measure minimum shoulder width or the tool joint OD is below the A.P.I. minimum, record the reading on the Inspection Results Form.

15.0.1

Visually inspect threads and shoulder for damage. Use appropriate profile gage to check thread form. If joints are suspected of stretch, verify with calibrated lead gage. If reading exceeds .006” in 2”, reject joint for stretch.

15.0.2

If tool joint classification is different than pipe classification, apply paint band color code per API RP7G to tool joint OD. Band should be 2” wide. Color code shall be as follows : Permium Class

-

2

white bands

Class 2

-

1

yellow band

Item No : PTSCOS, ROTARY-4/07-6/2000

Page 3 of 4

Section : Rotary Shoulder 4/7

Approval

Subject : Used Drill pipe Inspection

Revision No :

Date:1st June 2000

: 3

Class 3

-

1

orange band

Scrap

-

1

red band

PTSCOS/06-2000

15.0.3

If tool joints are not inspected, apply “Not Inspected” stencil on OD in yellow paint.

15.0.4

If tool joints are rejected, indicate reason for rejection, i.e. shoulder, thread, cracked, on OD in red paint on yellow background. Paint red band around end of rejected joint.

16.0

Record all inspection results on Drill Pipe Inspection Results Form. A separate Drill Pipe Inspection Results and Drill Pipe Inspection Summary Form should be used for any change of size, weight or grate of pipe unless the pipe is mixed on the rack.

17.0

If RSC inspection is included on inspection job, it should be done at this time. If refacing is required and included, it should be done at this time. Record results on Drill Pipe Inspection Results and Damage Evaluation forms.

18.0

Present results and discuss with customer representative.

19.0

Dope threads and re-install thread protectors. Move finished pipe to designated areas. Repeat procedure until all pipe have been inspected.

20.0

Clean up work area.

21.0

Complete Drill Pipe Inspection Summary form and Inspection Services Invoice.

Item No : PTSCOS, ROTARY-4/07-6/2000

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