Petroleum and natural gas industries - Steel drill pipe (ISO 11961:2018)

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 drillpipe
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.

Erdöl- und Erdgasindustrie - Stahl-Bohrrohre (ISO 11961:2018)

Industries du pétrole et du gaz naturel - Tiges de forage en acier (ISO 11961:2018)

Industrija nafte in zemeljskega plina - Jeklene vrtalne cevi (ISO 11961:2018)

Ta dokument določa tehnične dobavne pogoje za jeklene vrtalne cevi z razširjenimi konci in varjenimi spoji za uporabo v vrtalnih ter proizvodnih postopkih v industriji nafte in zemeljskega plina za tri ravni specifikacij proizvoda (PSL-1, PSL-2 in PSL-3). Zahteve za PSL-1 so osnova tega dokumenta. Zahteve, ki določajo različne ravni standardnih tehničnih
zahtev za PSL-2 in PSL-3, so podane v dodatku G.
Ta dokument zajema naslednje razrede vrtalnih cevi:
– vrtalna cev razreda E;
– vrtalna cev visokotrdnostnega razreda, razredi X, G in S;
– vrtalna cev izboljšane odpornosti H2S, razreda D in F.
Podana je tipična konfiguracija vrtalne cevi, ki prikazuje glavne elemente in dolžine (glej sliko B.1). Glavne dimenzije in mase razredov vrtalnih cevi so podane v enotah SI (glej preglednico A.1) ter v enotah USC (glej preglednico C.1).
Ta dokument se lahko uporablja tudi za vrtalne cevi s spoji, ki niso določene s standardi ISO ali API. Na podlagi dogovora med kupcem in proizvajalcem se lahko ta dokument uporablja tudi za druge dimenzije delov vrtalnih cevi in njihovih spojev. V tem dokumentu so navedene dodatne zahteve, ki se lahko na podlagi dogovora med kupcem in proizvajalcem uporabljajo za preskušanje, preverjanje učinkovitosti ter neporušitveni preiskovalni postopek (glej dodatek E).
V tem dokumentu se ne obravnavajo lastnosti izdelka niti zmanjšanje učinkovitosti izdelka
v uporabi.
OPOMBA 1: V tem dokumentu je vrtalna cev označena z oznako 1, oznako 2, razredom materiala (E, X, G, S, D in F), vrsto razširitve in vrsto vrtljivega vijačnega priključka. Označbe se uporabljajo za identifikacijo pri naročanju.
OPOMBA 2: Za podrobne zahteve za vrezovanje navoja v spoje vrtalnih cevi se lahko uporablja standard ISO 10424-2 ali specifikacija API 7-2.
OPOMBA 3: Za lastnosti vrtalne cevi se lahko uporablja API RP 7G.

General Information

Status
Published
Public Enquiry End Date
20-Nov-2017
Publication Date
09-Dec-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
29-Nov-2018
Due Date
03-Feb-2019
Completion Date
10-Dec-2018

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SLOVENSKI STANDARD
SIST EN ISO 11961:2019
01-januar-2019
1DGRPHãþD
SIST EN ISO 11961:2009
SIST EN ISO 11961:2009/AC:2009
Industrija nafte in zemeljskega plina - Jeklene vrtalne cevi (ISO 11961:2018)
Petroleum and natural gas industries - Steel drill pipe (ISO 11961:2018)
Erdöl- und Erdgasindustrie - Stahl-Bohrrohre (ISO 11961:2018)

Industries du pétrole et du gaz naturel - Tiges de forage en acier (ISO 11961:2018)

Ta slovenski standard je istoveten z: EN ISO 11961:2018
ICS:
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST EN ISO 11961:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 11961:2019
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SIST EN ISO 11961:2019
EN ISO 11961
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2018
EUROPÄISCHE NORM
ICS 75.180.10; 77.140.75 Supersedes EN ISO 11961:2008
English Version
Petroleum and natural gas industries - Steel drill pipe (ISO
11961:2018)

Industries du pétrole et du gaz naturel - Tiges de forage Erdöl- und Erdgasindustrie - Stahl-Bohrrohre (ISO

en acier (ISO 11961:2018) 11961:2018)
This European Standard was approved by CEN on 3 October 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11961:2018 E

worldwide for CEN national Members.
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SIST EN ISO 11961:2019
EN ISO 11961:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 11961:2019
EN ISO 11961:2018 (E)
European foreword

This document (EN ISO 11961:2018) has been prepared by Technical Committee ISO/TC 67 "Materials,

equipment and offshore structures for petroleum, petrochemical and natural gas industries" in

collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for

petroleum, petrochemical and natural gas industries” the secretariat of which is held by NEN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by May 2019, and conflicting national standards shall be

withdrawn at the latest by May 2019.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 11961:2008.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 11961:2018 has been approved by CEN as EN ISO 11961:2018 without any modification.

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SIST EN ISO 11961:2019
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SIST EN ISO 11961:2019
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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SIST EN ISO 11961:2019
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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SIST EN ISO 11961:2019
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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SIST EN ISO 11961:2019
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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SIST EN ISO 11961:2019
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

...

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