Petroleum and natural gas industries -- Steel drill pipe

This document specifies the technical delivery conditions for steel drill-pipes with upset pipe-body ends and weld-on tool joints for use in drilling and production operations in petroleum and natural gas industries for three product specification levels (PSL-1, PSL-2 and PSL-3). The requirements for PSL-1 form the basis of this document. The requirements that define different levels of standard technical requirements for PSL-2 and PSL-3 are in Annex G. This document covers the following grades of drill-pipe: — grade E drill-pipe; — high-strength grades of drill-pipe, grades X, G and S; — enhanced H2S resistance drill pipe, grades D and F. A typical drill-pipe configuration is given, showing main elements and lengths (see Figure B.1). The main dimensions and masses of the grades of drill-pipe are given in both SI units (see Table A.1) and in USC units (see Table C.1). This document can also be used for drill-pipe with tool joints not specified by ISO or API standards. By agreement between purchaser and manufacturer, this document can also be applied to other drill-pipe body and/or tool-joint dimensions. This document lists supplementary requirements that can optionally be agreed between purchaser and manufacturer, for testing, performance verification and non-destructive examination (see Annex E). This document does not consider performance properties, nor performance degradation of the product when in service. NOTE 1 In this document, drill-pipe is designated by label 1, label 2, grade of material (E, X, G, S, D and F), upset type and type of rotary shouldered connection. Designations are used for the purpose of identification in ordering. NOTE 2 Reference can be made to ISO 10424-2 or API Spec 7-2 for the detailed requirements for the threading of drill-pipe tool joints. NOTE 3 Reference can be made to API RP 7G for the performance properties of the drill-pipe.

Industries du pétrole et du gaz naturel -- Tiges de forage en acier

General Information

Status
Published
Publication Date
16-Oct-2018
Current Stage
6060 - International Standard published
Start Date
02-Sep-2018
Completion Date
17-Oct-2018
Ref Project

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ISO 11961:2018 - Petroleum and natural gas industries -- Steel drill pipe
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INTERNATIONAL ISO
STANDARD 11961
Third edition
2018-10
Petroleum and natural gas
industries — Steel drill pipe
Industries du pétrole et du gaz naturel — Tiges de forage en acier
Reference number
ISO 11961:2018(E)
ISO 2018
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ISO 11961:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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ISO 11961:2018(E)
Contents Page

Foreword ....................................................................................................................................................................................................................................viii

Introduction ................................................................................................................................................................................................................................ix

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms, definitions, symbols and abbreviated terms ....................................................................................................... 2

3.1 Terms and definitions ....................................................................................................................................................................... 2

3.2 Symbols and abbreviated terms............................................................................................................................................... 7

4 Conformance ............................................................................................................................................................................................................. 9

4.1 Dual citing of normative references ...................................................................................................................................... 9

4.2 Units of measurement ......... .............................................................................................................................................................. 9

5 Information to be supplied when placing orders for drill-pipe .......................................................................... 9

5.1 Grades D95 and F105 ........................................................................................................................................................................ 9

5.2 General information ........................................................................................................................................................................10

5.3 Additional information .................................................................................................................................................................10

6 Requirements for drill-pipe ...................................................................................................................................................................11

6.1 General ........................................................................................................................................................................................................11

6.2 Dimensions, masses and connections ..............................................................................................................................11

6.2.1 Standard configuration............................................................................................................................................11

6.2.2 Alternative configurations ....................................................................................................................................12

6.2.3 Drill-pipe weld neck diameters ........................................................................................................................12

6.2.4 Tool-joint inside diameters ..................................................................................................................................12

6.2.5 Length.....................................................................................................................................................................................12

6.2.6 Length of tool-joint outside diameter .........................................................................................................12

6.2.7 End-drift ...............................................................................................................................................................................12

6.2.8 Drill-pipe body and tool-joint alignment .................................................................................................12

6.2.9 Weld-zone profile .........................................................................................................................................................13

6.3 Material requirements...................................................................................................................................................................13

6.3.1 General...................................................................................................................................................................................13

6.3.2 Weld-zone yield strength .......................................................................................................................................13

6.3.3 Weld-zone hardness ........................................................................................................................................... ........13

6.3.4 Weld-zone Charpy V-notch absorbed-energy requirements ..................................................14

6.3.5 Weld-zone Charpy V-notch absorbed energy — Alternative requirements ..............14

6.3.6 Weld-zone transverse side bend properties .........................................................................................14

6.3.7 Sulfide stress cracking test — Grades D and F ....................................................................................14

6.4 Process of manufacture for drill-pipe ..............................................................................................................................15

6.4.1 Processes requiring validation .........................................................................................................................15

6.4.2 Welding qualification ................................................................................................................................................15

6.4.3 Welding of tool joints to drill-pipe body and post-weld heat treatment ......................15

6.4.4 Weld machining .............................................................................................................................................................15

6.4.5 Internal coating ..............................................................................................................................................................15

6.4.6 External coating .............................................................................................................................................................15

6.4.7 Thread protection ........................................................................................................................................................16

6.5 Traceability .............................................................................................................................................................................................16

6.6 Testing — General .............................................................................................................................................................................16

6.6.1 Test equipment calibration ..................................................................................................................................16

6.6.2 Dimensional inspection ..........................................................................................................................................16

6.6.3 Drill-pipe length ............................................................................................................................................................16

6.6.4 Straightness .......................................................................................................................................................................16

6.6.5 End-drift test ....................................................................................................................................................................16

6.6.6 Internal profile ...................................................................... ..........................................................................................17

6.6.7 Drill-pipe body and tool-joint alignment .................................................................................................17

6.7 Testing of welds ...................................................................................................................................................................................17

© ISO 2018 – All rights reserved iii
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ISO 11961:2018(E)

6.7.1 Lot size ...................................................................................................................................................................................17

6.7.2 Test specimens................................................................................................................................................................17

6.8 Tensile test ...............................................................................................................................................................................................17

6.8.1 Procedures .........................................................................................................................................................................17

6.8.2 Test equipment calibration ..................................................................................................................................17

6.8.3 Specimens ...........................................................................................................................................................................17

6.8.4 Frequency ...........................................................................................................................................................................18

6.8.5 Defective specimen .....................................................................................................................................................18

6.8.6 Re-tests ..................................................................................................................................................................................18

6.9 Hardness test .........................................................................................................................................................................................18

6.9.1 Procedures .........................................................................................................................................................................18

6.9.2 Surface hardness test ................................................................................................................................................18

6.9.3 Surface hardness — Re-test ................................................................................................................................18

6.9.4 Through-wall hardness test ................................................................................................................................19

6.9.5 Through-wall hardness — Re-tests ..............................................................................................................19

6.10 Charpy V-notch impact test .......................................................................................................................................................19

6.10.1 Procedures .........................................................................................................................................................................19

6.10.2 Specimen size and orientation ..........................................................................................................................19

6.10.3 Test frequency .................................................................................................................................................................19

6.10.4 Re-tests ..................................................................................................................................................................................19

6.10.5 Defective specimens ........................................................................................................................................... ........20

6.11 Transverse side-bend test ..........................................................................................................................................................20

6.11.1 Procedure ............................................................................................................................................................................20

6.11.2 Specimens ...........................................................................................................................................................................20

6.11.3 Test frequency .................................................................................................................................................................20

6.11.4 Re-tests ..................................................................................................................................................................................20

6.12 Imperfections and defects in drill-pipe ..........................................................................................................................20

6.12.1 General...................................................................................................................................................................................20

6.12.2 Weld zone defects ........................................................................................................................................................21

6.12.3 Process control plan...................................................................................................................................................21

6.13 Visual inspection of the drill-pipe weld zone ............................................................................................................21

6.13.1 General...................................................................................................................................................................................21

6.13.2 Disposition of defects................................................................................................................................................21

6.14 Non-destructive examination of the weld zone .......................................................................................................21

6.14.1 General...................................................................................................................................................................................21

6.14.2 Wet fluorescent magnetic-particle inspection ....................................................................................21

6.14.3 Ultrasonic inspection — Procedure .............................................................................................................22

6.14.4 Ultrasonic inspection — Reference standard ......................................................................................22

6.14.5 Ultrasonic inspection — System capability records.......................................................................22

6.14.6 Disposition of defects................................................................................................................................................23

6.15 Marking of drill-pipe .......................................................................................................................................................................23

6.15.1 General...................................................................................................................................................................................23

6.15.2 Drill-pipe marking .......................................................................................................................................................23

6.15.3 Traceability marking .................................................................................................................................................23

6.15.4 Drill-pipe marking on the pipe body ...........................................................................................................23

6.15.5 Drill-pipe marking on the tool joint .............................................................................................................24

6.16 Minimum facility requirements for drill-pipe manufacturers ....................................................................24

6.17 Documentation requirements of drill-pipe .................................................................................................................24

6.17.1 Standard documentation .......................................................................................................................................24

6.17.2 Supplementary documents ..................................................................................................................................25

6.17.3 Electronic data interchange ................................................................................................................................25

6.17.4 Retention of records ..................................................................................................................................................25

7 Requirements for drill-pipe body ....................................................................................................................................................25

7.1 Information to be supplied when placing orders for drill-pipe bodies ...............................................25

7.2 Dimensional and mass requirements ...............................................................................................................................26

7.2.1 General...................................................................................................................................................................................26

7.2.2 Configuration ...................................................................................................................................................................26

7.2.3 Internal upset area ......................................................................................................................................................26

iv © ISO 2018 – All rights reserved
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ISO 11961:2018(E)

7.2.4 Outside-diameter tolerance ................................................................................................................................26

7.2.5 Inside diameter ..............................................................................................................................................................26

7.2.6 Pipe-body wall thickness and tolerance ...................................................................................................27

7.2.7 Length.....................................................................................................................................................................................27

7.2.8 Mass .........................................................................................................................................................................................27

7.2.9 Straightness .......................................................................................................................................................................27

7.2.10 Upset and drill-pipe body alignment ...........................................................................................................27

7.2.11 Upset ovality .....................................................................................................................................................................28

7.3 Material requirements...................................................................................................................................................................28

7.3.1 Chemical composition ..............................................................................................................................................28

7.3.2 Tensile requirements ................................................................................................................................................28

7.3.3 Charpy V-notch absorbed-energy requirements — Grade E ..................................................28

7.3.4 Charpy V-notch absorbed-energy requirements — Grades X, G, S, D and F ..............28

7.3.5 Charpy V-notch absorbed-energy requirements — Alternative temperature.........29

7.3.6 Surface hardness requirements .......................................................................................................................29

7.4 Process of manufacture ................................................................................................................................................................29

7.4.1 Processes requiring validation .........................................................................................................................29

7.4.2 General...................................................................................................................................................................................29

7.4.3 Heat treatment................................................................................................................................................................29

7.4.4 External coating .............................................................................................................................................................29

7.5 Traceability .............................................................................................................................................................................................29

7.6 Testing — General .............................................................................................................................................................................30

7.6.1 Test-equipment calibration .................................................................................................................................30

7.6.2 Heat-treatment lot .......................................................................................................................................................30

7.7 Testing of chemical composition ..........................................................................................................................................30

7.7.1 Heat analysis ...................................................................... ...............................................................................................30

7.7.2 Product analysis ............................................................................................................................................................30

7.7.3 Test method .......................................................................................................................................................................30

7.7.4 Re-test of product analysis ...................................................................................................................................30

7.8 Tensile tests ............................................................................................................................................................................................31

7.8.1 Procedures .........................................................................................................................................................................31

7.8.2 Test equipment calibration ..................................................................................................................................31

7.8.3 Test specimens................................................................................................................................................................31

7.8.4 Frequency of testing ..................................................................................................................................................31

7.8.5 Heat control test ............................................................................................................................................................31

7.8.6 Re-tests ..................................................................................................................................................................................31

7.8.7 Defective specimens ........................................................................................................................................... ........32

7.9 Charpy V-notch impact tests ....................................................................................................................................................32

7.9.1 Procedure ............................................................................................................................................................................32

7.9.2 Specimen size and location ..................................................................................................................................32

7.9.3 Frequency of testing ..................................................................................................................................................32

7.9.4 Heat control test ............................................................................................................................................................32

7.9.5 Re-test ....................................................................................................................................................................................32

7.9.6 Defective specimens ........................................................................................................................................... ........33

7.10 Drill-pipe-body wall thickness ...............................................................................................................................................33

7.11 Drill-pipe-body length ...................................................................................................................................................................33

7.12 Internal upset ........................................................................................................................................................................................33

7.13 Internal profile .....................................................................................................................................................................................33

7.14 Straightness ............................................................................................................................................................................................34

7.15 Upset and drill-pipe body alignment ................................................................................................................................34

7.16 Mass determination .........................................................................................................................................................................34

7.17 Imperfections and defects of drill-pipe body.................
...

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