SOP III-002 R00
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VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 1 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE FOR EVALUATION OF PIPE BODY IMPERFECTIONS
NOTE: This document is considered COMPANY CONFIDENTIAL and is not to be distributed in whole or in part outside the Company, without the express, written consent of the undersigned authority.
PROCEDURE APPROVAL: ___________________________ DATE: _____________ Vice President Inspection & Coating Product Line
PROCEDURE APPROVAL: ___________________________ DATE: ______________ Director Quality & Technical Services
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 2 of 38
Evaluation of Pipe Body Imperfections
INTRODUCTION The intent of this document is to provide a general operating guide for Tuboscope evaluation of imperfections detected in used drill pipe. The procedural methods to be adhered to while conducting an examination of imperfections occurring in used drill pipe tubular goods have been detailed within this document. Inspectors charged with responsibility for an inspection service must use the methods and procedures outlined herein are strictly adhered to during the imperfection prove-up process. Utilization of this document will require a thorough understanding of the content by the user. Information and/or specifications contained in this document meet or exceed those minimum applicable pipe imperfection prove-up requirements defined in API published Standards as interpreted by Tuboscope. This document does not replace API Recommended Practices as a reference source nor does it take precedence over API published documents or Customer Specifications in the case of a dispute.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 3 of 38
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
Evaluation of Pipe Body Imperfections
TABLE OF CONTENTS 1.0 2.0 3.0 4.0 5.0
Scope............................................................................................................................................ 5 Personnel Requirements.............................................................................................................. 6 Compliance With Prove-up Specifications................................................................................... 6 Definitions ..................................................................................................................................... 6 Equipment Requirements............................................................................................................. 7 5.5 Visible Light Sources.......................................................................................................... 7 5.16 Equipment Calibration........................................................................................................ 9 6.0 General Requirements 9 6.1 Prove-up Rack Spacing ..................................................................................................... 9 6.2 Prove-up Rack Height ........................................................................................................ 9 6.3 Types of Grinding ............................................................................................................... 9 6.3.1 Exploratory............................................................................................................ 9 6.3.2 Smoothing Exploratory Grinding ........................................................................ 10 7.0 Location and Evaluation of Buggy Unit Indications...............................................................10 7.2 Evaluation of External Indications ...............................................................................10 7.3 Evaluation of Internal Indications ................................................................................11 8.0 Location and Evaluation of Automated Unit Indications........................................................12 8.7 Drill Pipe Body Indications (Except for FLUT Indications)............................................... 12 8.8 Critical/Slip Area External Indications .............................................................................. 13 8.9 Critical/Slip Area Internal Indications ............................................................................... 13 8.10 FLUT Indications .............................................................................................................. 13 8.10.3 For Ferromagnetic Materials .............................................................................. 14 8.10.4 For Non Ferromagnetic Materials....................................................................... 14 9.0 Evaluation and Disposition of Outside Surface Imperfections................................................... 15 9.2 Cracks............................................................................................................................... 15 9.3 Depth Measurement of Imperfections.............................................................................. 15 9.4 Determination of Remaining Body Wall (RBW)............................................................... 16 9.5 Exploration........................................................................................................................ 16 10.0 Evaluation and Disposition of Internal Surface Imperfections ................................................... 17 10.3 Visual Verification of Internal Cracks ............................................................................... 17 10.3.1 Optiscope Procedures ........................................................................................ 18 10.3.2 Imperfection Size Chart ...................................................................................... 18 11.0 Evaluation and Disposition of Dents or Other Mechanical Damage ......................................... 18 12.0 Post Evaluation Procedures....................................................................................................... 19 Table 7.2.3 – 1 - Classification of Used Drill Pipe: 2-3/8 in., 6.65#/ft., 0.280 in................................ 20 Table 7.2.3 – 2 - Classification of Used Drill Pipe: 2-7/8 in., 10.40#/ft., 0.362 in.............................. 21 Table 7.2.3 – 3 - Classification of Used Drill Pipe: 3-1/2 in., 9.50#/ft., 0.254 in................................ 22 Table 7.2.3 – 4 - Classification of Used Drill Pipe: 3-1/2 in., 13.30#/ft., 0.368 in.............................. 23 Table 7.2.3 – 5 - Classification of Used Drill Pipe: 3-1/2 in., 15.50#/ft., 0.449 in.............................. 24 Table 7.2.3 – 6 - Classification of Used Drill Pipe: 4 in., 14.00#/ft., 0.330 in. ................................... 25 Table 7.2.3 – 7 - Classification of Used Drill Pipe: 4-1/2 in., 13.75#/ft., 0.271 in.............................. 26 Table 7.2.3 – 8 - Classification of Used Drill Pipe: 4-1/2 in., 16.60#/ft., 0.337 in.............................. 27 Table 7.2.3 – 9 - Classification of Used Drill Pipe: 4-1/2 in., 20.00#/ft., 0.430 in.............................. 28 Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
Issued Date August 1, 2005
SOP No. III-002
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Evaluation of Pipe Body Imperfections
Table 7.2.3 – 10 - Classification of Used Drill Pipe: 5 in., 16.25#/ft., 0.296 in. ................................. 29 Table 7.2.3 – 11 - Classification of Used Drill Pipe: 5 in., 19.50#/ft., 0.362 in. ................................. 30 Table 7.2.3 – 12 - Classification of Used Drill Pipe: 5 in., 25.60#/ft., 0.500 in. ................................. 31 Table 7.2.3 – 13 - Classification of Used Drill Pipe: 5-1/2 in., 21.90#/ft., 0.361 in. .......................... 32 Table 7.2.3 – 14 - Classification of Used Drill Pipe: 5-1/2 in., 24.70#/ft., 0.415 in. .......................... 33 Table 7.2.3 – 15 - Classification of Used Drill Pipe: 5-7/8 in., 23.40#/ft., 0.361 in. .......................... 34 Table 7.2.3 – 16 - Classification of Used Drill Pipe: 5-7/8 in., 26.30#/ft., 0.415 in. .......................... 35 Table 7.2.3 – 17 - Classification of Used Drill Pipe: 6-5/8 in., 25.20#/ft., 0.330 in. .......................... 36 Table 7.2.3 – 18 - Classification of Used Drill Pipe: 6-5/8 in., 27.70#/ft., 0.362 in. .......................... 37 Table 10.3.2 – Imperfection Size Chart................................................................................................ 38
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 5 of 38
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
1.0
Evaluation of Pipe Body Imperfections
SCOPE 1.1
This procedure establishes the minimum requirements for evaluation and subsequent disposition of pipe body indications located by visual, automated full body inspection methods (ultrasonic and electromagnetic flux leakage inspection [EMI]), magnetic particle inspection, liquid penetrant inspection and ultrasonic inspection. Tubular products covered by this procedure include used drill pipe.
1.2
Evaluation of thread imperfections is not covered in this document. Refer to SOP III-100.
1.3
This Tuboscope document is the controlling document whenever any other like kind prior-dated Tuboscope inspection procedures are in conflict.
1.4
The latest revision of the following documents were used as references for establishing this procedure: 1.4.1 A.P.I. Specification 5D – Drill Pipe. 1.4.2 A.P.I. Recommended Practice 7G – Recommended Practice for Drill Stem Design and Operating Limits. 1.4.3 A.P.I. Standard 5T1 – Imperfection Terminology. 1.4.4 A.S.T.M. E 1316 – Standard Terminology for Nondestructive Examinations. 1.4.5
SOP III-001 – General Requirements.
1.4.6 SOP III-100 – Visual and Dimensional Inspection. 1.4.7
SOP III-101 - Tuboscope Optical Instrument.
1.4.8 SOP III-200 – Magnetic Particle Inspection. 1.4.9 SOP III-400 – Ultrasonic Prove-up. 1.4.10 SOP III-403 – Manual Ultrasonic Thickness Gauging. 1.4.11 SOP III-501 – Liquid Penetrant – Visible Solvent Removable Method. 1.4.12 Standard DS-1 Drill Stem Design and Inspection.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 6 of 38
STANDARD OPERATING PROCEDURE (Company Confidential)
Evaluation of Pipe Body Imperfections
1.4.13 NS-2 – North Sea Drillstring Inspection Standard. 2.0
PERSONNEL REQUIREMENTS Personnel performing the evaluation techniques outlined in this procedure shall be certified, as applicable, in Magnetic Particle Testing, Ultrasonic Testing and/or Penetrant Testing and qualified in Ultrasonic Thickness Gauge Unit Operation (code 35) in accordance with 4.0 in SOP III-001.
3.0
COMPLIANCE WITH PROVE-UP SPECIFICATIONS The Inspector’s method of performing imperfections prove-up shall comply with the specifications contained in this document unless customer specifications are provided. Should customer specifications be provided, a notation will be made on the inspection report indicating customer designated imperfection prove-up specifications were followed.
4.0
DEFINITIONS 4.1
Defect. An imperfection of sufficient magnitude to warrant rejection of the product based on criteria defined in applicable Tuboscope SOP or customer specification. A.P.I. 5D.
4.2
Discontinuity. A lack of continuity or cohesion; an intentional or unintentional interruption in the physical structure or configuration of a material or component. A.S.T.M. E1316.
4.3
Evaluation. A review, following interpretation of the indications noted, to determine whether they meet specified acceptance criteria. A.S.T.M. E1316.
4.4
Imperfection. A discontinuity in the product wall or on the product surface that can be detected by the inspection methods contained in this Tuboscope SOP manual. A.P.I. 5D.
4.5
Indication. The response or evidence from a nondestructive examination. An indication is determined by interpretation to be relevant, non-relevant, or false. A.S.T.M. E1316.
4.6
Interpretation. The determination of whether indications are relevant, nonrelevant, or false. A.S.T.M. E1316.
4.7
Linear Imperfection. Linear imperfections include, but are not limited to, seams, laps, cracks, plug scores, cuts and gouges. A.P.I. 5D. Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
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4.8
Non-linear Imperfection. A non-linear imperfection includes, but is not limited to, pits and round bottom die stamping. A.P.I. 5D. They may also be defined as any imperfection whose length is less than three (3) times its width, such as a pit. They may also be referred to as a volumetric imperfection.
4.9
Relevant Indication or Imperfection. Any indication or imperfection that has the potential of being a defect because of its signal amplitude or depth or because it may reduce the remaining wall thickness to less than specified pipe wall thickness.
4.10 Specified Wall Thickness. The tabulated material wall thickness corresponding to either the specified outside diameter and weight or the specified outside diameter and specified inside diameter. 4.11 Wall Thickness. The actual wall thickness of a tubular product caused by variations in pipe roundness, cross-section or eccentricity. 5.0
EQUIPMENT REQUIREMENTS Fully operational equipment and an adequate level of supplies shall be available at the job site, except items in 5.3 and 5.7 which may be obtained on an as need basis. The equipment and/or supplies should comply with applicable Tuboscope Engineering Specifications, Company Safety Policy, and State or Federal Regulations for Safety. As a minimum, the following applicable equipment shall be available to locate, explore and evaluate pipe body imperfections: 5.1
An AC powered blower or air compressor.
5.2
Metal marker (paint marker).
5.3
An optical instrument as defined in SOP III-101, shall be used to aid in the location/evaluation of internal surface imperfections. 5.3.1
Borescopes shall be capable of displaying the date on a penny, dime or Jaeger J4 letters placed within 4 inches (10 cm) of the objective lens. The borescope shall be checked whenever all or part of the borescope is assembled or re-assembled during the inspection process.
5.4
Wire brush.
5.5
Light Sources. Overhead lighting and hand-held white light fixtures shall meet the requirements of 9.2 in SOP III-001. Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
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Evaluation of Pipe Body Imperfections
Magnetic particle testing equipment, as defined in SOP III-200, may be used to aid in the location of imperfections in ferromagnetic material. 5.6.1
An electromagnetic AC or DC yoke with adjustable legs shall be used for material with an outside diameter of 5 inches (127 mm) or less. Fixed leg yokes may be used on material with an outside diameter 5-1/2 inches (140 mm) and larger.
NOTE: A pre-existing or induced longitudinal magnetic field may be used in lieu of the yoke. 5.6.2
The application of dry magnetic particles to inside surface shall be through the use of a non-ferrous trough.
5.7
Liquid penetrant testing equipment, as defined in SOP III-501, may be used to aid in the location of imperfections in non-ferromagnetic material.
5.8
An ultrasonic thickness gauge, as defined in SOP III-403, shall be used to aid in the location/evaluation of imperfections in ferromagnetic and non-ferromagnetic material.
5.9
An ultrasonic flaw detector, as defined in SOP III-400, shall be used to aid in the location/evaluation of internal surface imperfections in ferromagnetic and nonferromagnetic material.
5.10 A grinder and/or a ¼ inch (6,4 mm) round file for probing the depth of accessible imperfections. An additional disk grinder may be required for contouring of acceptable imperfections and buffing wheels for surface preparation. 5.10.1 A flat file may also be used for removing metal protrusions from the material surface. 5.10.2 For non-ferrous material, non-metallic grinding wheels shall be used. 5.11 A dial depth gauge for measuring imperfection depth with graduations in 0.001 inch (0,01 mm) or smaller units. 5.11.1 The depth gauge shall be equipped with a conical “needle-point” contact with a minimum height of 0.200 inch (5 mm) and a maximum tip diameter of 0.025 inch (6,4 mm). 5.12 An outside micrometer for measuring applicable pipe or upset outside diameters. The micrometer shall have graduations in 0.001 inch (0,01 mm) or smaller units Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
Issued Date August 1, 2005
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Evaluation of Pipe Body Imperfections
with contacts which are flat or rounded. 5.13 A steel rule with graduations in 1/64 inch (0, 5 mm) or smaller units. 5.14 A flat non-tinted mirror which provides a non-distorted image. The reflecting surface shall be kept clean. 5.15 O.D. and I.D. spring calipers may be used to determine the pipe or upset diameters. The contacts of the calipers shall be flat. 5.16 Equipment Calibration. Equipment calibration / verification shall be in accordance with 9.1 in SOP III-001. 5.16.1 Dial depth gauges, micrometers and calipers shall be calibrated, after any repairs and at the frequency specified in Table 9.1 in SOP III-100. 5.16.2 The micrometer end measuring rods and the lifting power of electromagnetic yokes shall be verified after any repair and at the frequency specified in Table 9.1 in SOP III-100. 5.17 All precision measuring/testing equipment and reference standards shall be exposed to the same ambient temperature as the pipe surface for a minimum of 30 minutes prior to any examination(s). 6.0
GENERAL REQUIREMENTS When applicable, all reject information from automated inspection system prove-up reports and end area inspections shall be transferred to a defect summary sheet and masterlog. This information is to be included in the formal report to the customer and shall become a permanent record to be kept on file for later reference. 6.1
Prove-up Rack Spacing. Space should be available for rolling the pipe and walking between the adequately secured pipe. Enough space for at least three (3) complete rotations of the pipe should be adequate, in most cases.
6.2
Prove-Up Rack Height. A quality and accurate prove-up examination can be performed when the pipe is at a convenient height for observing ID and OD imperfections.
6.3
Types of Grinding 6.3.1
Exploratory. Exploratory grinding should be round bottomed. To avoid over-grinding, leave some trace of the imperfection across the bottom of Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
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Evaluation of Pipe Body Imperfections
the grind. 6.3.2
7.0
Smoothing Exploratory Grinds. Contour all exploratory grinds with generous radii in acceptable pipe. Also, all grinds in acceptable pipe should be coated with rust inhibitor.
LOCATION AND EVALUATION OF BUGGY UNIT INDICATIONS 7.1
7.2
As the buggy is traversed down the length of drill pipe and a suspect indication appears on the log or display, the operator must stop the buggy and prove-up the indication immediately. After the buggy is stopped, the flaw lights (when applicable) on the desk can be used for approximate location of the indication. 7.1.1
Using a marker, mark the shoe location on the pipe that corresponds to the desk light.
7.1.2
Remove the buggy from the length.
Evaluation of External Indications 7.2.1
Visually examine the external surface of the questionable area for obvious imperfections.
7.2.2
If the imperfection is determined to be large enough to down grade such as a pit, gouge, formation cut, slip cut or other visual surface condition, determine the depth using a depth gauge and the adjacent wall thickness using an ultrasonic instrument in accordance with 9.3 and 9.4.
7.2.3
Refer to the applicable Table 7.2.3 - 1 through 7.2.3 – 18 for classification.
7.2.4
In the absence of obvious external surface imperfections, dry magnetic particle inspection must be performed. With the buggy mag coil in the "ON", positioned and placed approximately 6 to 12 inches (15 to 30 cm) from the marked area, lightly sprinkle dry magnetic particles over the suspect area. Using your hand, smooth the particles across the area. If the suspect imperfection is on the external surface, the powder will accumulate on or around the imperfection.
7.2.5
Determine the depth of all imperfections/defects holding powder, except fatigue cracks, using a file or grinder. The presence of a fatigue crack is cause for classifying the material as unfit for further drilling service.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
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7.2.6
All grinds must be contoured and the area reinspected unless the pipe is classified as unfit for further drilling service.
7.2.7
Classify the pipe in accordance with applicable Table 7.2.3 - 1 through 7.2.3 – 18.
Evaluation of Internal Indications 7.3.1
In some cases a "fuzzy" type magnetic particle build will appear on the external surface but nothing can be found on the external pipe surface. This could be an indication of an internal surface imperfection. In this case, the internal surface of the pipe must be examined in the questionable area.
7.3.2
If necessary, clean the inside of the pipe with a rotary wire brush and blow out all excess residue.
7.3.3
With the buggy mag coil "OFF", use a non-magnetic trough to place dry magnetic particles inside the pipe in the suspect area.
7.3.4
With the buggy mag coil placed 6 to 12 inches (15 to 30 cm) from the marked area, turn the coil "ON" and roll the pipe at least one (1) full revolution.
7.3.5
Examine the questionable area using a hand-held light or mirror or with an optical instrument in accordance with 10.3.
7.3.6
If a powder build is present, lightly tap the pipe around the area. If a transverse powder build remains in the area, the length most likely is cracked and must be classified according.
7.3.7
If only pitting is present, determine the remaining wall thickness above the pitting, in accordance with 9.4 and classify the pipe in accordance with the applicable Table 7.2.3 - 1 through 7.2.3 – 18, or customer specifications.
7.3.8
If, after all proper prove-up procedures have been performed, crack like indications still appear on the log or display when the buggy is traversed over the area in question, the length will be placed in a lower classification depending on the general condition and known failure history of the drill string. If several lengths with this condition exist in the string, the customer must be notified as to the proper disposition of these lengths.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
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Evaluation of Pipe Body Imperfections
LOCATION AND EVALUATION OF AUTOMATED UNIT INDICATIONS 8.1
For automated inspection systems (EMI and FLUT) without a paint marking system, all information gathered during the evaluation of indications shall be documented on a runsheet or masterlog and correlated to the prove-up report.
8.2
For automated inspection systems (EMI and FLUT) with a paint marking system, all information gathered during the evaluation of indications shall be documented on a prove-up report and correlated to the computer print-out or map.
8.3
A Prove-up Report shall be maintained, by the prove-up personnel, during prove-up to document all indications and the results of the prove-up, by joint number. The operator shall initial each page of the Prove-up Report indicating that the report is correct and correlates with the runsheet or computer flag report.
8.4
Multiple indications from automated inspection systems shall be evaluated beginning with the most severe indication and proceeding to either end. If the joint is rejected at any point, further evaluation shall not be performed unless required by the customer.
8.5
These documents shall be kept current and shall be returned to the operator when completed. After approval by the operator, the automated inspection system runsheet and prove-up report shall be checked for completeness and accuracy by the plant manager or his assistant/lead person.
8.6
The area of interest, as defined by the applicable automated unit Tuboscope SOP, shall be investigated. All areas shall be investigated using all or a combination of visual, magnetic particle or ultrasonic techniques.
8.7
Drill Pipe Body Indications (Except for FLUT Indications) 8.7.1
Areas to be investigated shall be visually examined and then an AC yoke shall be used for magnetic particle investigation. The yoke shall be applied with its handle oriented at approximately 90° to the estimated orientation of the indication. The yoke legs shall overlap 50% to ensure complete coverage with maximum sensitivity. The area to be yoked is defined in the applicable SOP.
8.7.2
Once the imperfection has been identified, proceed in accordance with 9.0.
8.7.3
If an imperfection cannot be located, scan the area with compression Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
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wave ultrasonics, searching for internal pitting in accordance with 6.3 in SOP III-403.
8.8
8.9
8.7.4
If an imperfection cannot be located using the techniques in 8.7.3, the area shall be further investigated in accordance with 7.3.
8.7.5
If an imperfection cannot be located using the techniques in 8.7.4, the joint shall be re-inspected through the unit and if the indications still appear on the log or display, the length will be placed in a lower classification depending on the general condition and known failure history of the drill string. If several lengths with this condition exist in the string, the customer must be notified as to the proper disposition of these lengths.
Critical/Slip Area External Indications 8.8.1
Areas to be investigated shall be inspected in accordance with 8.7.1 and 8.7.2.
8.8.2
If the indication is not located as described above, scan the area using shear wave ultrasonics in accordance with the requirements in SOP III400.
8.8.3
If an imperfection cannot be located using the technique in 8.8.2, the area shall be classified as acceptable.
Critical/Slip Area Internal Indications 8.9.1
Areas to be investigated shall be examined with shear wave ultrasonics, searching for subsurface and/or internal surface breaking imperfections in accordance with SOP III-400. The area to be examined is defined in the applicable SOP.
8.9.2
If an imperfection cannot be located, visually inspect the internal surface with a light, searching for internal pitting.
8.9.3
If an imperfection cannot be located, scan the area with compression wave ultrasonics, searching for internal pitting in accordance with 6.3 in SOP III-403.
8.9.4
If an imperfection cannot be located using the technique in 8.9.3, the area shall be classified as acceptable.
8.10 FLUT Indications. All information gathered during the evaluation of indications Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
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shall be documented on a runsheet or masterlog and correlated to the prove-up report (computer print-out or map). 8.10.1 These documents shall be kept current and shall be returned to the operator when completed. After approval by the operator, the automated inspection system runsheet and prove-up report shall be checked for completeness and accuracy by the plant manager or his assistant/lead person. 8.10.2 The area of interest, as defined in the applicable SOP, shall be investigated. All areas shall be investigated using all or a combination of visual, magnetic particle, ultrasonic or liquid penetrant techniques (when applicable). 8.10.3 For Ferromagnetic Materials. Relevant indications shall be investigated for imperfections by visual, magnetic particle and/or ultrasonic methods. a. External Surface Investigation. Investigate the area in accordance with 8.8. b. Internal Surface Investigation. Investigate the area in accordance with 8.9. 8.10.4 For Nonferromagnetic Materials. Relevant indications shall be investigated for imperfections by visual, ultrasonic and/or liquid penetrant methods. a. External Surface Investigation 1. Areas to be investigated shall be visually inspected and then shear wave ultrasonics shall be used for evaluation in accordance with SOP III-400. 2. If an imperfection cannot be located, liquid penetrant testing shall be used for further investigation in accordance with SOP III-501. 3. If an imperfection cannot be located using the techniques in 8.10.4.a.1 and 8.10.4.a.2, the area shall be classified as acceptable. b. Internal Surface Investigation 1. Areas to be investigated shall be inspected with shear and Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
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Evaluation of Pipe Body Imperfections
compression wave ultrasonics, searching for subsurface and/or internal surface breaking imperfections in accordance with SOP III-400 and SOP III-403, respectively. The area to be inspected is defined in the applicable SOP. 2. If an imperfection cannot be located using the techniques in 8.10.4.b.1, the area shall be classified as acceptable. 8.11 All prove-up markings shall be blacked out or completely removed from the outside surface of acceptable material after all indications have been fully evaluated. 9.0
EVALUATION AND DISPOSITION OF OUTSIDE SURFACE IMPERFECTIONS 9.1
The area of interest as defined by the method(s) which initially located the indication shall be clearly defined. Subsequent method(s) shall be employed to more clearly define the nature and relevancy of the indication, (i.e.; visual, magnetic particle, liquid penetrant, ultrasonics, etc.) its orientation and location (internal or external surface). Refer to the applicable Table 7.2.3 - 1 through 7.2.3 – 18 for calculated pipe body wall thickness values.
9.2
Cracks. Confirmed cracks located by any method are cause for rejection without further investigation. Internal cracks should be confirmed visually in accordance with 10.3.
9.3
Depth Measurement of Imperfections. Zero the dial depth gauge on a flat surface such as a mirror or glass, not on the material surface. If the normal pipe contour is irregular or has a dent, the depth gauge shall be zeroed adjacent to the imperfection. The dial depth gauge shall be placed on the material surface with the anvil parallel to the longitudinal axis of the material. Ensure that the contact is placed in the deepest part of the imperfection or grind. The gauge shall be held upright and perpendicular to the material surface, leaning of the gauge during measurement is prohibited.
NOTE: The reference to grinds in the above paragraph is only applicable to manufacturing imperfections. Refer to 9.5. 9.3.1
Before measurement ensure that all varnish, loose scale and metal protrusions have been removed with a flat file.
9.3.2
Re-verify the zero setting of the dial depth gauge prior to rejecting any material.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
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9.3.3
Classification shall be based on RBW. Proceed in accordance with 9.4.
9.3.4
When specified by the customer, imperfections in I.E of Table 7.2.3 - 1 through 7.2.3 – 18, may be removed if adequate body wall exists which would permit complete removal of the defect. Complete defect removal shall be verified using MT. Proceed in accordance with 9.4 to make this determination.
NOTE: Customer specifications may supersede these dispositions. NOTE: The removal of fatigue cracks is not permitted. 9.4
Determination of Remaining Body Wall (RBW). Using an ultrasonic thickness gauge in accordance with SOP III-403, measure the wall thickness adjacent to the deepest portion of the imperfection on each side of the imperfection or exploratory probe grind. Subtract the depth of the imperfection or grind from the average of these two (2) wall readings. If the resultant wall thickness is less than one (1) of the minimum remaining wall thickness values defined in the applicable Table 7.2.3 - 1 through 7.2.3 – 18 or customer specification, the length shall be classified accordingly.
NOTE: The reference to grinds in the above paragraph is only applicable to manufacturing imperfections. Refer to 9.5. 9.4.1
Record on the Drill Pipe Inspection Tally Sheet, in the Wall Thickness column, ONLY if this is the most severe bodywall reduction for the length. If recorded, record in a decimal form in thousandths of an inch, i.e.: 0.265".
NOTE: 9.5 is applicable only to manufacturing imperfections. 9.5
Exploration. For manufacturing imperfections, such as seams and laps, which do not allow direct depth measurement may need to be probed to determine the depth. Probing shall be performed with either a file or grinder. 9.5.1
Prior to removing any surface metal, the surrounding body wall shall be measured with an ultrasonic thickness gauge in accordance with SOP III-403. A determination shall be made on the amount of metal to be removed based on the resultant surrounding body wall.
9.5.2
Probing the imperfection shall be performed carefully to ensure a defect is not created by over-grinding. For non-radial type imperfections, follow the imperfection with the grinder or file so that when completed, the Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 17 of 38
Evaluation of Pipe Body Imperfections
imperfection is located in the deepest part of the probed area. a. Probe only deep enough to meet the rejection criteria or until the imperfection has broken, whichever is less. Probing shall be performed in such a manner as to ensure no sharp edges are produced. b. For imperfections exceeding 1/2 inch (13 mm) in length, probe the imperfection in several locations throughout its length to locate the deepest part of the imperfection. 9.5.3
If adequate body wall exists which would facilitate removal of the imperfection, and removal is requested by the customer, the imperfection may be removed by contour grinding and re-verifying the remaining body wall after complete removal. Allow the contoured area to cool to approximately the same surface temperature as the surrounding pipe body prior to taking wall thickness measurements.
NOTE: Materials expand when heated, therefore, wall thickness readings taken on hot material may be in error. a. Re-inspect the ground area with using magnetic particles. b. All grinds shall be coated with a rust inhibitor (or black enamel paint) after grinding/evaluation has been completed. 9.5.4
If a defect cannot be removed to salvage the material, the length shall be classified in accordance with the applicable Table 7.2.3 - 1 through 7.2.3 – 18.
10.0 EVALUATION AND DISPOSITION OF INSIDE SURFACE IMPERFECTIONS 10.1 The area of interest as defined by the method(s) which initially located the indication shall be clearly defined. Subsequent method(s) may be employed to more clearly define the nature and relevancy of the indication (i.e.; visual [borescope], magnetic particle, ultrasonics, etc.). Compression wave ultrasonics shall be used to locate and evaluate the imperfection. Ultrasonic thickness gauging shall be performed in accordance with SOP III-403. 10.2 Imperfections which cannot be located through the use of compression wave ultrasonics should be evaluated with the use of shear wave ultrasonics in accordance with SOP III-400. 10.3 Visual Verification of Internal Cracks. To confirm the presence of internal cracks Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 18 of 38
Evaluation of Pipe Body Imperfections
and/or to distinguish pit signals from cracks, further evaluation shall be performed using dry magnetic particles, a coil and/or an optical instrument in accordance with 7.3 and 10.3, respectively. NOTE: The use of MT on internally coated drill pipe may not yield acceptable results and the evaluation may be limited to ultrasonics. 10.3.1 Optiscope Procedures. Assemble the borescope instrument in accordance with SOP III-101. Care shall be used to protect the borescope electrical cord, it must be kept in excellent condition and grounded to eliminate electrical shock hazards. Be sure that all needed centralizer baskets have been attached. a. The area to be evaluated should have been precisely marked during the initial inspection which detected the imperfection. b. Lay the optical instrument alongside the pipe and place the illuminating head by the chalked area. c. Wrap a piece of tape around the instrument at the point which is aligned with the pipe end. d. Slowly slide the optical instrument into the pipe end to be inspected. One (1) person must be located at the illuminated head end and the other at the eye piece end, then position the illuminating head near the area to be inspected. e. Plug the isolation transformer power cable into a 110 volt outlet. Next plug the illuminating head cable into the transformer. f.
Using the tape as a distance marker locate the imperfection and determine its size and severity in accordance with 10.3.2.
10.3.2 Imperfection Size Chart. Table 10.3.2 is a chart showing the relationship between the size of the image viewed versus the actual size of the imperfection. When used properly, this chart will enable the operator to more accurately estimate the size of the imperfection. 11.0 EVALUATION AND DISPOSITION OF DENTS OR OTHER MECHANICAL DAMAGE Dents shall be evaluated using a micrometer or spring caliper in accordance with the applicable Table 7.2.3 - 1 through 7.2.3 – 18.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE STANDARD OPERATING PROCEDURE (Company Confidential)
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 19 of 38
Evaluation of Pipe Body Imperfections
12.0 POST EVALUATION PROCEDURES Other applicable post inspection procedures in 18.0 of SOP III-001 shall be followed.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 20 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 1 - Classification of Used Drill Pipe 2-3/8 in., 6.65#/ft., 0.280 in. 1/32 in. = 11.1% wall Pipe Body Condition
A. OD Wear Wall
60,3 mm, 9,9 kg/m, 7,11 mm 1/32 in. = 1.3% OD
1/32 in. = 0,79 mm
1
Class 3 One Orange Band Three Center Punch Marks
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.224 in. (5,70 mm)
Not less than 0.196 in. (4,98 mm)
Not over 5/64 in. (1,8 mm)
Not over 3/32 in. (2,4 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 5/64 in. (1,8 mm)
Not over 3/32 in. (2,4 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 5/64 in. (1,8 mm)
Not over 3/32 in. (2,4 mm)
Not less than 0.224 in. (5,70 mm)
Not less than 0.196 in. (4,98 mm)
Longitudinal
Not less than 0.224 in. (5,70 mm)
Transverse
Not less than 0.224 in. (5,70 mm)
Not less than 0.196 in. (4,98 mm) Not less than 0.196 in. (4,98 mm) None
B. Dents & Mashes Crushing, necking C. Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.224 in. (5,70 mm) measured from base of deepest pit
RBW not less than 0.196 in. (4,98 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.224 in. (5,70 mm)
Not less than 0.196 in. (4,98 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 21 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 2 - Classification of Used Drill Pipe 2-7/8 in., 10.40#/ft., 0.362 in. 1/32 in. = 8.6% wall Pipe Body Condition
A. OD Wear Wall
73,0 mm, 15,5 kg/m, 9,19 mm 1/32 in. = 1.1% OD
1/32 in. = 0,79 mm
1
Class 3 One Orange Band Three Center Punch Marks
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm)
Not over 5/64 in. (2,2 mm)
Not over 7/64 in. (2,9 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 5/64 in. (2,2 mm)
Not over 7/64 in. (2,9 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 5/64 in. (2,2 mm)
Not over 7/64 in. (2,9 mm)
Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm)
Longitudinal
Not less than 0.290 in. (7,37 mm)
Transverse
Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm) Not less than 0.253 in. (6,43 mm) None
B. Dents & Mashes Crushing, necking C. Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.290 in. (7,37 mm) measured from base of deepest pit
RBW not less than 0.253 in. (6,43 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 22 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 3 - Classification of Used Drill Pipe 3-1/2 in., 9.50#/ft., 0.254 in. 1/32 in. = 12.2% wall
88,9 mm, 14,1 kg/m, 6,45 mm 1/32 in. = 0.89% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.203 in. (5,16 mm)
Not less than 0.178 in. (4,52 mm)
Not over 7/64 in. (2,67 mm)
Not over 9/64 in. (3,56 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 7/64 in. (2,67 mm)
Not over 9/64 in. (3,56 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 7/64 in. (2,67 mm)
Not over 9/64 in. (3,56 mm)
Not less than 0.203 in. (5,16 mm)
Not less than 0.178 in. (4,52 mm)
Longitudinal
Not less than 0.203 in. (5,16 mm)
Transverse
Not less than 0.203 in. (5,16 mm)
Not less than 0.178 in. (4,52 mm) Not less than 0.178 in. (4,52 mm) None
B. Dents & Mashes Crushing, necking C. Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.203 in. (5,16 mm) measured from base of deepest pit
RBW not less than 0.178 in. (4,52 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.203 in. (5,16 mm)
Not less than 0.178 in. (4,52 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 23 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 4 - Classification of Used Drill Pipe 3-1/2 in., 13.30#/ft., 0.368 in. 1/32 in. = 8.5% wall
88,9 mm, 19,8 kg/m, 9,35 mm 1/32 in. = 0.89% OD 1
Pipe Body Condition
A. OD Wear Wall B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations 1. Stretched 2. String Shot
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.294 in. (7,47 mm)
Not less than 0.258 in. (6,55 mm)
Not over 7/64 in. (2,67 mm)
Not over 9/64 in. (3,56 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
Not over 7/64 in. (2,67 mm) Not over 7/64 in. (2,67 mm)
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
Not over 9/64 in. (3,56 mm) Not over 9/64 in. (3,56 mm)
E. Corrosion, Cuts, & Gouges Not less than 0.294 in. (7,47 mm)
Not less than 0.258 in. (6,55 mm)
Longitudinal
Not less than 0.294 in. (7,47 mm)
Transverse
Not less than 0.294 in. (7,47 mm)
Not less than 0.258 in. (6,55 mm) Not less than 0.258 in. (6,55 mm) None
1. Corrosion 2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.294 in. (7,47 mm) measured from base of deepest pit
RBW not less than 0.258 in. (6,55 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.294 in. (7,47 mm)
Not less than 0.258 in. (6,55 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 24 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 5 - Classification of Used Drill Pipe 3-1/2 in., 15.50#/ft., 0.449 in. 1/32 in. = 7.0% wall
88,9 mm, 23,1 kg/m, 11,40 mm 1/32 in. = 0.89% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.359 in. (9,12 mm)
Not less than 0.314 in. (7,98 mm)
Not over 7/64 in. (2,67 mm)
Not over 9/64 in. (3,56 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 7/64 in. (2,67 mm)
Not over 9/64 in. (3,56 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 7/64 in. (2,67 mm)
Not over 9/64 in. (3,56 mm)
Not less than 0.359 in. (9,12 mm)
Not less than 0.314 in. (7,98 mm)
Longitudinal
Not less than 0.359 in. (9,12 mm)
Transverse
Not less than 0.359 in. (9,12 mm)
Not less than 0.314 in. (7,98 mm) Not less than 0.314 in. (7,98 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.359 in. (9,12 mm) measured from base of deepest pit
RBW not less than 0.314 in. (7,98 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.359 in. (9,12 mm)
Not less than 0.314 in. (7,98 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 25 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 6 - Classification of Used Drill Pipe 4 in., 14.00#/ft., 0.330 in. 1/32 in. = 9.5% wall
101,6 mm, 20,8 kg/m, 8,38 mm 1/32 in. = 0.78% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.264 in. (6,71 mm)
Not less than 0.231 in. (5,87 mm)
Not over 7/64 in. (3,05 mm)
Not over 5/32 in. (4,06 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 7/64 in. (3,05 mm)
Not over 5/32 in. (4,06 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 7/64 in. (3,05 mm)
Not over 5/32 in. (4,06 mm)
Not less than 0.264 in. (6,71 mm)
Not less than 0.231 in. (5,87 mm)
Longitudinal
Not less than 0.264 in. (6,71 mm)
Transverse
Not less than 0.264 in. (6,71 mm)
Not less than 0.231 in. (5,87 mm) Not less than 0.231 in. (5,87 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.264 in. (6,71 mm) measured from base of deepest pit
RBW not less than 0.231 in. (5,87 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.264 in. (6,71 mm)
Not less than 0.231 in. (5,87 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 26 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 7 - Classification of Used Drill Pipe 4-1/2 in., 13.75#/ft., 0.271 in. 1/32 in. = 11.4% wall
114,3 mm, 20,5 kg/m, 6,88 mm 1/32 in. = 0.69% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.217 in. (5,51 mm)
Not less than 0.190 in. (4,83 mm)
Not over 1/8 in. (3,43 mm)
Not over 3/16 in. (4,57 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 1/8 in. (3,43 mm)
Not over 3/16 in. (4,57 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 1/8 in. (3,43 mm)
Not over 3/16 in. (4,57 mm)
Not less than 0.217 in. (5,51 mm)
Not less than 0.190 in. (4,83 mm)
Longitudinal
Not less than 0.217 in. (5,51 mm)
Transverse
Not less than 0.217 in. (5,51 mm)
Not less than 0.190 in. (4,83 mm) Not less than 0.190 in. (4,83 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.217 in. (5,51 mm) measured from base of deepest pit
RBW not less than 0.190 in. (4,83 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.217 in. (5,51 mm)
Not less than 0.190 in. (4,83 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 27 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 8 - Classification of Used Drill Pipe 4-1/2 in., 16.60#/ft., 0.337 in. 1/32 in. = 9.3% wall
114,3 mm, 24,7 kg/m, 8,56 mm 1/32 in. = 0.69% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.270 in. (6,89 mm)
Not less than 0.236 in. (6,0 mm)
Not over 1/8 in. (3,43 mm)
Not over 3/16 in. (4,57 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 1/8 in. (3,43 mm)
Not over 3/16 in. (4,57 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 1/8 in. (3,43 mm)
Not over 3/16 in. (4,57 mm)
Not less than 0.270 in. (6,89 mm)
Not less than 0.236 in. (6,0 mm)
Longitudinal
Not less than 0.270 in. (6,89 mm)
Transverse
Not less than 0.270 in. (6,89 mm)
Not less than 0.236 in. (6,0 mm) Not less than 0.236 in. (6,0 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.270 in. (6,89 mm) measured from base of deepest pit
RBW not less than 0.236 in. (6,0 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.270 in. (6,89 mm)
Not less than 0.236 in. (6,0 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 28 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 9 - Classification of Used Drill Pipe 4-1/2 in., 20.00#/ft., 0.430 in. 1/32 in. = 7.3% wall
114,3 mm, 29,8 kg/m, 10,92 mm 1/32 in. = 0.69% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.344 in. (8,74 mm)
Not less than 0.301 in. (7,65 mm)
Not over 1/8 in. (3,43 mm)
Not over 3/16 in. (4,57 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 1/8 in. (3,43 mm)
Not over 3/16 in. (4,57 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 1/8 in. (3,43 mm)
Not over 3/16 in. (4,57 mm)
Not less than 0.344 in. (8,74 mm)
Not less than 0.301 in. (7,65 mm)
Longitudinal
Not less than 0.344 in. (8,74 mm)
Transverse
Not less than 0.344 in. (8,74 mm)
Not less than 0.301 in. (7,65 mm) Not less than 0.301 in. (7,65 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.344 in. (8,74 mm) measured from base of deepest pit
RBW not less than 0.301 in. (7,65 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.344 in. (8,74 mm)
Not less than 0.301 in. (7,65 mm) None
Wall 3 C. Cracks 1. 5. 6. 7.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 29 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 10 - Classification of Used Drill Pipe 5 in., 16.25#/ft., 0.296 in. 1/32 in. = 10.5% wall
127,0 mm, 24,2 kg/m, 7,52 mm 1/32 in. = 0.62% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.237 in. (6,02 mm)
Not less than 0.207 in. (5,26 mm)
Not over 5/32 in. (3,81 mm)
Not over 13/64 in. (5,08 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 5/32 in. (3,81 mm)
Not over 13/64 in. (5,08 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 5/32 in. (3,81 mm)
Not over 13/64 in. (5,08 mm)
Not less than 0.237 in. (6,02 mm)
Not less than 0.207 in. (6.02 mm)
Longitudinal
Not less than 0.237 in. (6,02 mm)
Transverse
Not less than 0.237 in. (6,02 mm)
Not less than 0.207 in. (6.02 mm) Not less than 0.207 in. (6.02 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.237 in. (6,02 mm) measured from base of deepest pit
RBW not less than 0.207 in. (6.02 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.237 in. (6,02 mm)
Not less than 0.207 in. (6.02 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 30 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 11 - Classification of Used Drill Pipe: 5 in., 19.50#/ft., 0.362 in. 5 in., 19.50#/ft., 0.362 in. 1/32 in. = 8.6% wall
127,0 mm, 29,0 kg/m, 9,19 mm 1/32 in. = 0.62% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm)
Not over 5/32 in. (3,81 mm)
Not over 13/64 in. (5,08 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 5/32 in. (3,81 mm)
Not over 13/64 in. (5,08 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 5/32 in. (3,81 mm)
Not over 13/64 in. (5,08 mm)
Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm)
Longitudinal
Not less than 0.290 in. (7,37 mm)
Transverse
Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm) Not less than 0.253 in. (6,43 mm) None
B. Dents & Mashes Crushing, necking C. Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.290 in. (7,37 mm) measured from base of deepest pit
RBW not less than 0.253 in. (6,43 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 31 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 12 - Classification of Used Drill Pipe: 5 in., 25.60#/ft., 0.500 in. 5 in., 25.60#/ft., 0.500 in. 1/32 in. = 6.2% wall
127,0 mm, 38,1 kg/m, 12,70 mm 1/32 in. = 0.62% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.400 in. (10,20 mm)
Not less than 0.350 in. (8,90 mm)
Not over 5/32 in. (3,81 mm)
Not over 13/64 in. (5,08 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 5/32 in. (3,81 mm)
Not over 13/64 in. (5,08 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 5/32 in. (3,81 mm)
Not over 13/64 in. (5,08 mm)
Not less than 0.400 in. (10,20 mm)
Not less than 0.350 in. (8,90 mm)
Longitudinal
Not less than 0.400 in. (10,20 mm)
Transverse
Not less than 0.400 in. (10,20 mm)
Not less than 0.350 in. (8,90 mm) Not less than 0.350 in. (8,90 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.400 in. (10,20 mm) measured from base of deepest pit
RBW not less than 0.350 in. (8,90 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.400 in. (10,20 mm)
Not less than 0.350 in. (8,90 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 32 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 13 - Classification of Used Drill Pipe 5-1/2 in., 21.90#/ft., 0.361 in. 1/32 in. = 8.6% wall
139,7 mm, 32,6 kg/m, 9,17 mm 1/32 in. = 0.56% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm)
Not over 5/32 in. (4,20 mm)
Not over 7/32 in. (5,59 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 5/32 in. (4,20 mm)
Not over 7/32 in. (5,59 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 5/32 in. (4,20 mm)
Not over 7/32 in. (5,59 mm)
Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm)
Longitudinal
Not less than 0.289 in. (7,34 mm)
Transverse
Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm) Not less than 0.253 in. (6,43 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.289 in. (7,34 mm) measured from base of deepest pit
RBW not less than 0.253 in. (6,43 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 33 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 14 - Classification of Used Drill Pipe 5-1/2 in., 24.70#/ft., 0.415 in. 1/32 in. = 7.5% wall
139,7 mm, 36,8 kg/m, 10,54 mm 1/32 in. = 0.56% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.332 in. (8,43 mm)
Not less than 0.291 in. (7,39 mm)
Not over 5/32 in. (4,20 mm)
Not over 7/32 in. (5,59 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 5/32 in. (4,20 mm)
Not over 7/32 in. (5,59 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 5/32 in. (4,20 mm)
Not over 7/32 in. (5,59 mm)
Not less than 0.332 in. (8,43 mm)
Not less than 0.291 in. (7,39 mm)
Longitudinal
Not less than 0.332 in. (8,43 mm)
Transverse
Not less than 0.332 in. (8,43 mm)
Not less than 0.291 in. (7,39 mm) Not less than 0.291 in. (7,39 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.332 in. (8,43 mm) measured from base of deepest pit
RBW not less than 0.291 in. (7,39 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.332 in. (8,43 mm)
Not less than 0.291 in. (7,39 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 34 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 15 - Classification of Used Drill Pipe 5-7/8 in., 23.40#/ft., 0.361 in. 1/32 in. = 8.6% wall
149,2 mm, 34,8 kg/m, 9,17 mm 1/32 in. = 0.53% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm)
Not over 11/64 in. (4,48 mm)
Not over 15/64 in. (5,97 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 11/64 in. (4,48 mm)
Not over 15/64 in. (5,97 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 11/64 in. (4,48 mm)
Not over 15/64 in. (5,97 mm)
Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm)
Longitudinal
Not less than 0.289 in. (7,34 mm)
Transverse
Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm) Not less than 0.253 in. (6,43 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.289 in. (7,34 mm) measured from base of deepest pit
RBW not less than 0.253 in. (6,43 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 35 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 16 - Classification of Used Drill Pipe 5-7/8 in., 26.30#/ft., 0.415 in. 1/32 in. = 7.5% wall
149,2 mm, 39,1 kg/m, 10,54 mm 1/32 in. = 0.53% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm)
Not over 11/64 in. (4,48 mm)
Not over 15/64 in. (5,97 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 11/64 in. (4,48 mm)
Not over 15/64 in. (5,97 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 11/64 in. (4,48 mm)
Not over 15/64 in. (5,97 mm)
Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm)
Longitudinal
Not less than 0.289 in. (7,34 mm)
Transverse
Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm) Not less than 0.253 in. (6,43 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.289 in. (7,34 mm) measured from base of deepest pit
RBW not less than 0.253 in. (6,43 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.289 in. (7,34 mm)
Not less than 0.253 in. (6,43 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 36 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 17 - Classification of Used Drill Pipe 6-5/8 in., 25.20#/ft., 0.330 in. 1/32 in. = 9.4% wall
168,3 mm, 37,5 kg/m, 8,38 mm 1/32 in. = 0.47% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.264 in. (6,71 mm)
Not less than 0.231 in. (5,87 mm)
Not over 3/16 in. (5,05 mm)
Not over 17/64 in. (6,73 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 3/16 in. (5,05 mm)
Not over 17/64 in. (6,73 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 3/164 in. (5,05 mm)
Not over 17/64 in. (6,73 mm)
Not less than 0.264 in. (6,71 mm)
Not less than 0.231 in. (5,87 mm)
Longitudinal
Not less than 0.264 in. (6,71 mm)
Transverse
Not less than 0.264 in. (6,71 mm)
Not less than 0.231 in. (5,87 mm) Not less than 0.231 in. (5,87 mm) None
B. Dents & Mashes Crushing, necking C. Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.264 in. (6,71 mm) measured from base of deepest pit
RBW not less than 0.231 in. (5,87 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.264 in. (6,71 mm)
Not less than 0.231 in. (5,87 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 37 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 7.2.3 - 18 - Classification of Used Drill Pipe 6-5/8 in., 27.70#/ft., 0.362 in. 1/32 in. = 8.6% wall
168,3 mm, 41,3 kg/m, 9,19 mm 1/32 in. = 0.47% OD 1
Pipe Body Condition
A. OD Wear Wall
Premium Class Class 2 Two White Bands One Yellow Band One Center Punch Mark Two Center Punch Marks I. Exterior Conditions Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm)
Not over 3/16 in. (5,05 mm)
Not over 17/64 in. (5,05 mm)
Depth not over 10% of 4 average adjacent wall
Depth not over 20% of 4 average adjacent wall
1. Stretched
Not over 3/16 in. (5,05 mm)
Not over 17/64 in. (5,05 mm)
2. String Shot E. Corrosion, Cuts, & Gouges
Not over 3/164 in. (5,05 mm)
Not over 17/64 in. (5,05 mm)
Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm)
Longitudinal
Not less than 0.290 in. (7,37 mm)
Transverse
Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm) Not less than 0.253 in. (6,43 mm) None
B. Dents & Mashes Crushing, necking C.
Slip Area Mechanical Damage 2
2
Cuts , gouges D. Stress Induced Diameter Variations
1. Corrosion
1/32 in. = 0,79 mm Class 3 One Orange Band Three Center Punch Marks Any imperfection or damages exceeding Class 2
2. Cuts & Gouges
F. Cracks
3
None
None
II. Interior Conditions A. Corrosive Pitting Wall
RBW not less than 0.290 in. (7,37 mm) measured from base of deepest pit
RBW not less than 0.253 in. (6,43 mm) measured from base of deepest pit
B. Erosion & Wear
Not less than 0.290 in. (7,37 mm)
Not less than 0.253 in. (6,43 mm) None
Wall 3 C. Cracks 1. 2. 3. 4.
None
None
The premium classification is recommended for service where it is anticipated that torsional or tensile limits for class 2 drill pipe will be exceeded. These limits can be found in API RP 7G. Premium class shall be identified with two (2) white bands, plus one (1) center punch mark on the 35° or 18° shoulder of the pin end tool joint. Remaining wall shall not be less than the value in I.E., defects may be ground out providing the remaining wall is not reduced below these values and such grinding shall be approximately faired into the outer contour of the pipe. In any classification where cracks or washouts appear, the pipe shall be identified with a red band and considered unfit for further drilling service. Average adjacent wall is determined by measuring the wall thickness on each side of the cut or gouge, adjacent to the deepest penetration.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
VOLUME III – USED DRILL PIPE
Issued Date August 1, 2005
SOP No. III-002
Revision 0
Page No. 38 of 38
Evaluation of Pipe Body Imperfections
STANDARD OPERATING PROCEDURE (Company Confidential)
Table 10.3.2 - Imperfection Size Chart Pipe Size
Example:
Inches
mm
2-3/8
Actual Size of Imperfection Inches
Inches
mm
60,3
3.3
83,8
2-7/8
73,0
2.4
61,0
3½
88,9
1.8
45,7
4
101,6
1.5
38,1
4½
114,3
1.35
34,3
5
127,0
1.2
30,5
5½
139,7
1.2
30,5
6-5/8
168,3
0.9
22,9
1
mm
Size of Image of Imperfection
25,4
In 2-7/8 inch (73,0 mm) OD drill pipe, if the imperfection appears to be 1 inch (25,4 mm) in diameter, its actual size is 1 inch (25,4 mm) divided by 2.4 inches (61,0 mm) or approximately 0.417 inches (10,6 mm) in diameter. In 6-5/8 inch (168,3 mm) OD drill pipe, if the imperfection appears to be 1 inch (25,4 mm) in diameter, its actual size is 1 inch (25,4 mm) divided by 0.9 inches (22,9 mm) or approximately 1.1 inches (28,2 mm) in diameter.
Copyright © 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001
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