EN ISO 11961:1996

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Petroleum and natural gas industries - Steel pipes for use as drill pipe - Specification (ISO 11961:1996)Erdöl- und Erdgasindustrien - Stahlrohre zur Verwendung als Bohrrohre - Anforderungen (ISO 11961:1996)Industries du pétrole et du gaz naturel - Tubes d'acier pour tiges de forage - Spécifications (ISO 11961:1996)Petroleum and natural gas industries - Steel pipes for use as drill pipe - Specification (ISO 11961:1996)77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific use75.180.10Oprema za raziskovanje in odkopavanjeExploratory and extraction equipmentICS:Ta slovenski standard je istoveten z:EN ISO 11961:1996SIST EN ISO 11961:2000en01-december-2000SIST EN ISO 11961:2000SLOVENSKI
STANDARD
INTERNATIONAL STANDARD IS0 11961 First edition 1996-l I-01 Petroleum and natural gas industries - Steel pipes for use as drill pipe - Specification lndustrie du p&role et du gaz nature/ - Tubes d’acier pour tiges de forage - Spkcifications Reference number IS0 11961:1996(E) SIST EN ISO 11961:2000

IS0 11961:1996(E) Contents Page I Scope . 2 Normative references . 3 Definitions . 4 Information to be supplied by the purchaser . 5 Process of manufacture . 5.1 General . 5.2 Heat treatment . 5.3 Traceability . 6 Material requirements . 61 . Chemical requirements . 6.2 Mechanical properties requirements . 7 Dimensions, masses, tolerances and pipe ends . 7.1 Dimensions and masses . 7.2 Diameter . 7.3 Wall thickness . 7.4 Mass . 7.5 Length . 7.6 Straightness . 7.7 Drift requirements . 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 4 4 4 4 0 IS0 1996 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN ISO 11961:2000

0 IS0 IS0 11961:1996(E) 7.8 Tolerances on dimensions and masses . 7.9 Pipe ends . 8 Inspection and testing . 81 . 82 . 83 . 84 . 85 . 86 . 87 . 88 . 89 . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Chemical composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. Mechanical properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensional testing and mass determination . . . . . . . . . . . . . . . . . . . . . . Visual inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Non-destructive inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test methods and results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Invalidation of tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Retests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.2 Pipe markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3 Die-stamped markings . . . . . . . . . . . . . . . . . . . . . .*. 9.4 Paint-stencilled markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.5 Pipe processor markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Coatings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 .l Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Retention of records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Annexes A Pipe properties . 21 B Supplementary requirements . 22 C Purchaser inspection . 25 11 11 12 12 12 12 13 14 15 18 18 18 19 19 19 19 20 20 20 20 20 20 . . . III SIST EN ISO 11961:2000

IS0 11961 :1996(E) @ IS0 Foreword IS0 (the International Organization for Standardization) is a worldwide fed- eration of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non- governmental, in liaison with ISO, also take part in the work. IS0 collabo- rates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are cir- culated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 11961 was prepared by Technical Committee ISO/TC 67, Materials and equipment for petroleum and natural gas indus- tries, Subcommittee SC 5, Casing and tubing. Annexes A to C form an integral part of this International Standard. SIST EN ISO 11961:2000

0 IS0 IS0 11961: 1996(E) Introduction This International Standard, based on API Spec 5D:1992, Specification for drill pipe, includes requirements of various nature. These are identified by the use of certain words or phrases. Shall is used to indicate that a provision is mandatory. - Should is used to indicate that a provision is not mandatory, but rec- ommended as good practice. - May is used to indicate that a provision is optional. In addition, in certain cases, this International Standard offers Alternative requirements. These offer different options, either: - At purchaser’s discretion in which case such option shall be men- tioned on the purchase order. These cases are recognized by the use of the words or phrases such as alternative or at purchaser’s dis- cretion. - At manufacturer’s discretion in which case such option shall be no- tified to the purchaser. Such cases are identified by the use of the phrase at manufacturer’s discretion. - By agreement between purchaser and manufacturer. Such cases are recognized by the use of the phrase by agreement between in- terested parties. This International Standard, when this phrase is used, intends to either waive the application of a requirement (either mandatory or rec- ommended) and leave it to both purchaser and manufacturer to use the requirement or not; or offer one (or several) alternative requirement(s), the is left to b 0th purchas er and manufacturer. selection of which SIST EN ISO 11961:2000

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INTERNATIONAL STANDARD IS0 11961 :1996(E) Petroleum and natural gas industries - Steel pipes for use as drill pipe - Specification 1 Scope 1 .l This International Standard specifies cal delivery conditions for steel drill pipes use in drilling and producing operations. the techni- suitable for The applicable sizes, masses and end finishes are described in annex A. 1.2 The products described by this International Standard are gathered in two groups as follows: 13 . Supplementary requirements, that may be agreed between interested parties, for non-destructive inspection, impact testing of group 1 pipe, alternative temperature of impact testing and test certificates are specified in annex B. Group 1: all grade E drill pipe. Group 3: all drill pipe in high strength grades X95, G105 and S135. 2 Normative references The following standards include provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to in- vestigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid inter- national standards. IS0 6892: 1984, Metallic materials - Tensile testing. IS0 7500-I :I 986, Metalic materials - Verification of static uniaxial testing machines - Par? I: Tensile testing machines. ISO/TR 9769:1991, Steel and iron - Review of avail- able methods of analysis. API Spec 5 D: 1992, Specification for drill pipe. ASTM A370-94, Test Methods and Definitions for Mechanical Testing of Steel Products. ASTM E23-94b, Test Methods for Notched Bar Impact Testing of Metallic Materials. ASTM E83-94, Practice for Verification and Classifi- cation of Extensometers. 3 Definitions For the purpose of this international Standard, the fol- lowing definitions apply. 3.1 defect: Imperfection of sufficient magnitude to warrant rejection of the product based on the stipula- tions of this International Standard. 3.2 drill pipe: Heavy seamless pipe used to rotate bit and circulate the drilling mud; these pipe are cou- pled together by means of tool joints. 3.3 imperfection: Discontinuity or irregularity in the product detected by methods outlined in this Interna- tional Standard. 3.4 interested parties: The manufacturer and the purchaser of the products. 3.5 manufacturer: Firm, company or corporation re- sponsible for making the product to warrant that the product conforms to this International Standard. The manufacturer may be either a pipe mill or a processor. The manufacturer is responsible for compliance with all the applicable provisions of this International Stan- dard. SIST EN ISO 11961:2000

IS0 11961:1996(E) 3.6 pipe mill: Firm, company or corporation that operates pipe making facilities. I Stipulation Section 1 Heat treatment of drill pipe 1 5.2 I Heat and supplementary analyses 8.2 3.7 processor: Firm, company or corporation that operates facilities capable of heat treating pipe made by a pipe mill. 1 Pipe coatings clause IO I Drill pipe with special threads or end finish 7.9 3.8 seamless pipe: A wrought steel tubular product made without a welded seam, manufactured by hot working steel, and if necessary, by subsequently cold finishing the hot-worked tubular product to produce the desired shape, dimensions, and properties. Pipe ends I 7.9 Marking requirements I 9.1 I Non-destructive inspection (N5 notch) B.l 3.9 special processes: Final operations which are performed during pipe manufacturing that affect prod- uct attributes, except chemistry and dimensions. 1 Impact testing of group 1 I B.3 I Alternative temperature for impact testing B.4 NOTE 1 The special processes are heat treatment and, if applicable, cold finishing. I Test certificates I B.2 3.10 lot: Those lengths of pipe with the same speci- fied dimensions and grade which are heat treated as part of a continuous operation (or batch), and are of a single heat of steel, or from different heats that are grouped according to a documented procedure which will ensure that the appropriate requirements of this International Standard are met. 5 Process of manufacture 5.1 General The various grades and groups of steel furnished to this International Standard shall be made to a fine grain practice. Steel made to fine grain practice con- tains one or more grain refining elements, such as aluminium, niobium, vanadium or titanium in amounts intended to result in the steel having a fine austenitic grain size. 4 Information to be supplied by the purchaser 4.1 In placing orders for drill pipe to be manufactured in accordance with this International Standard, the purchaser shall specify the following on the purchase order. Pipe furnished to this International Standard shall be made by the seamless process. Cold drawn drill pipe without appropriate heat treatment is not acceptable. Stipulation Section 1 International Standard IS0 11961 1 - 5.2 Heat treatment I Quantity I - The heat treating process shall be performed accord- ing to a documented procedure. Internal-upset, external-upset or internal-external-upset (for welding) table A.1, column 7 5.2.1 Group 1 I Label-l or outside diameter I table A.1, column 3 I Label-2 or wall thickness I table A.1, column 4 I Grade I table A.1, column 6 Drill pipe shall be normalized or, at the manufacturer’s discretion normalized and tempered or quenched and tempered full length. Upset drill pipe shall be heat treated full length after upsetting. I Length range I 7.5, table 6 I Delivery date and shipping - instructions 5.2.2 Group 3 I Inspection by purchaser annex C Unless otherwise agreed between interested parties, drill pipe furnished to this International Standard shall be quenched and tempered or normalized and tem- pered. Upset drill pipe shall be heat treated full length after upsetting. 4.2 The purchaser should also state on the purchase order his requirements concerning the following stipu- lations, which are optional with the purchaser. 2 SIST EN ISO 11961:2000

0 IS0 IS0 11961 :1996(E) 5.3 Traceability 6.2.1.2 The minimum elongation in 50,8 mm gauge length shall be that determined by the following for- mula: The manufacturer shall establish and follow pro- cedures for maintaining heat and/or lot identity until all required heat and/or lot tests are performed and con- formance with the specified requirements has been shown. p e=l 944- uo,g where 6 Material requirements e is the minimum elongation in 50,8 mm gauge length, in percent rounded to nearest 0,5 %; 6.1 Chemical requirements A is the cross-sectional area of the tensile test specimen, in square millimetres, based on specified outside diameter or nominal speci- men width and specified wall thickness rounded to the nearest 10 mm? or 490 mm? whichever is smaller; Drill pipe furnished to this International Standard shall conform to the chemical requirements in table 1. Table 1 - Chemical requirements U is the specified tensile strength, in newtons per square millimetre. Group Phosphorus Sulfur max. max. % % The minimum elongations for both round bar tensile specimens (the 8,75 mm diameter with 35,6 mm gauge length, and the 12,5 mm diameter with 50,8 mm gauge length) shall be determined with an area A of 130 mm*. 1 All groups 1 0,030 I 0,030 I 6.2 Mechanical properties requirements 6.2.2 Yield strength 6.2.1 Tensile properties The yield strength shall be the tensile stress required to produce a total elongation of the gauge length, as determined by an extensometer, as follows: 6.2.1.1 Pipe furnished to this International Standard shall conform to the tensile requirements specified in table 2 for the particular grade ordered. When elongation is recorded or reported, the record or report shall show the nominal width of the test speci- men when strip specimens are used, the diameter and gauge length when round bar specimens are used, or state when full section specimens are used. Grade E75 x95 GlO5 s135 Total extension of gauge length, % 03 095 08 07 The tensile properties, except elongation, of the upset ends shall comply with the requirements given for the pipe body. In case of dispute, the properties (except elongation) of the upset shall be determined from a tensile test specimen cut from the upset. 6.2.3 Longitudinal impact requirements 6.2.3.1 Group 1 Table 2 - Tensile requirements By agreement between interested parties, pipe fur- nished to this International Standard shall conform to the requirements specified in clause B.3. Tensile strength min. N/mm* Yield strength min. max. N/mm* N/mm* Grade .E75 517 724 689 x95 655 862 724 G105 724 931 793 s135 931 1 138 1 000 6.2.3.2 Group 3 Material shall conform to the requirements specified in table 3. These requirements apply for a test tempera- ture of 21 “C + 2,8 “C. 3 SIST EN ISO 11961:2000

IS0 11961:1996(E) 0 IS0 6.2.3.3 Alternative low temperature energy requirements By agreement between interested parties, pipe fur- nished to this International Standard shall conform to the requirements specified in clause B.4. Table 3 - Impact energy requirements Minimum average Minimum energy energy of each set of any specimen of a set J IO x IO 54 47 10 x 7,5 43 38 IO x 5 30 26 7 Dimensions, masses, tolerances and pipe ends In the dimensional tables 4 and 5, pipe is designated by labels and by outside diameter. The outside diam- eter size of external-upset pipe is the outside diameter of the body of the pipe, not the upset portion. 7.1 Dimensions and masses Pipe shall be furnished in the sizes, wall thicknesses and masses (as given in tables 4 and 5) as specified on the purchase order. All dimensions shown without tolerances are related to the basis for design and are not subject to measurement to determine acceptance or rejection of product. 7.2 Diameter The outside diameter shall be within the tolerances specified in 7.8.1. (Inside diameters are governed by the outside diameter and mass tolerances.) 7.3 Wall thickness The wall thickness at any place shall not be less than the thickness given in tables 4 and 5 minus the per- missible under-tolerance specified in 7.8.2. 7.4 Mass The masses, determined as described in 8.4.5, shall conform to th e calculated masses as specified herein (or adjusted calculated masses) for the end finish specified on the purchase order, within the tolerances stipulated in 7.8.3. Calculated masses shall be deter- mined in accordance with the following formula: mL = (mpe XL)+m, where: is the ca .Iculated mass of a length L, in kilograms; piece of pipe of mpe is the lineic mass, in kilograms per metre; L is the length of pipe, including end finish, as defined in 7.5, in metres; m, is the mass in kilo grams gain or loss due to end finishing, For plain-end non-upset pipe, m, equals zero. 7.5 Length Pipe shall be furnished in range lengths conforming to table 6 as specified on the purchase order. Length determination shall be in metres and hundredths of meter. 7.6 Straightness Deviation from straight, or chord height, shall not exceed either of the following: a) 0,2 % of the total length of the pipe measured from one end of the pipe to the other end (see figure 1); b) 3,18 mm maximum drop in the transverse direc- tion in the I,52 m length at each end (see figure 2). 7.7 Drift requirements Each length of group 1 external upset drill pipe, except label 3-1/2-l 3.3, shall be tested throughout the length of the upset pipe with a cylindrical drift mandrel having a diameter, d, 4,76 mm smaller than the tabulated d of the drill pipe, and a length of 102 mm. 4 SIST EN ISO 11961:2000

@ IS0 IS0 11961 :1996(E) Pipe 7 Taut string or wire r Maximum chord height deviation = 0,0021 Figure 1 - Measuring of full length straightness Maximum drop = 3,18 mm Minimum straight edge = I,83 m min. \ I I I,52 m end I- Hookedend Figure 2 - Measuring of end straightness 5 SIST EN ISO 11961:2000

Table 4 - Dimensions and masses (Group 1) - Upset drill pipe for weld-on tool joints (See figure 3) Calculated mass 2) Upset dimensions3) 4) Outside Wall Inside Length end Labelsl) thick- Inside Outside Plain end Upset diameter 5) diameter Length Length Length at end of internal internal external Length external of pipe to diameter diameter ness upset7) 8) taper upset taper taper pipe61 fadeout 1 2 D t d mw mW D ou d ou Liu 4u L eu 1 eu Le, + 1,” + 3,18 zk 1,59 + 38,lO - 0,79 - 12,70 min. min. min. max. max. mm mm mm kg/m kg mm mm mm mm mm mm mm mm Internal-upset drill pipe 2-718 10.40 73,03 9,19 54,65 14,47 1,45 73,02 33,34 44,45 38,lO - - - 3-112 9.50 88,90 6.45 76,00 13,21 2,00 88,90 57,15 44,45 - 3-l/2 13.30 88,90 9,35 70,20 18,26 2,00 88,90 49,21 44,45 38,lO - - - 3-I/2 15.50 88,90 11,40 66,lO 21,79 I,54 88,90 49,21 44,45 38,lO - - - 49) 11.85 101,60 6,65 88,30 15,68 I,91 101,60 74,61 44,45 - 4 14.00 101,60 8,38 84,84 19,31 2,09 101,60 69,85 44,45 50,80 - - - 4-l/29) 13.75 114,30 6,88 100,54 18,27 2,36 114,30 85,72 44,45 - 59) 16.25 127,00 7,52 Ill,96 22,lO 3,00 127,00 95,25 44,45 - External-upset drill pipe 2-318 6.65 60,33 7,ll 46,ll 9,31 0,82 67,46 46,lO - 38,lO 38,lO - 101,60 2-718 10.40 73,03 9,19 54,65 14,47 I,09 81,76 54,63 - 38,lO 38,lO - 101,60 3-I/2 9.50 88,90 6,45 76,00 13,21 I,18 97,13 76,00 - 38,lO 38,lO - 101,60 3-I/2 13.30 88,90 9,35 70,20 18,26 1,82 97,13 66,09 57,15 50,80 38,lO 38,lO - 101,60 3-112 15.50 88,-90 11,40 66,lO 21,79 I,27 97,13 66,09 - 38,lO 38,lO - 101,60 49) 11.85 101,60 6,65 88,30 15,68 2,27 114,30 88,30 - 38,lO 38,lO - 101,60 4 14.00 101,60 8,38 84,84 19,31 2,27 114,30 84,84 - 38,lO 38,lO - 101,60 4-l/29) 13.75 114.30 6,88 100,54 18,27 2,54 127,00 100,54 - 38,lO 38,lO - 101,60 4-112 16.60 114,30 8,56 97,18 22,42 2,54 127,00 97,18 - 38,lO 38,lO - 101,60 4-I/2 20.00 114,30 10,92 92,46 27,79 2,54 127,00 92,46 - 38,lO 38,lO - 101,60 SIST EN ISO 11961:2000

Table 4 (concluded) Labelsl) Outside diameter Wall thick- ness Calculated mass2) Upset dimensions3) 4, Outside Inside Length Length Length Length end Inside diameter internal internal external Length external of pipe to diameter Plain end Upset diameter 5) at end of taper taper pipe61 upset 7) 8) taper upset fadeout 1 2 D t d mpe mW D ou d ou Liu 4u L eu 1 eu Leu + 2,” + 3,18 + 38,lO - 0,79 z!I I,59 - 12,70 min. min. min. max. max. mm mm mm kg/m kg mm mm mm mm mm mm mm mm Internal-external-upset drill pipe 4-1 I2 16.60 114,30 8,56 97,18 22,42 3,68 118,26 80,17 63,50 50,80 38,lO 25,40 38,lO - 4-I/2 20.00 114,30 IO,92 92,46 27,79 3,90 121,44 76,lO 57,15 50,80 38,lO 25,40 38,lO - 5 19.50 127,00 9,19 108,62 26,73 3,90 131,77 93,66 57,20 50,80 38,lO 25,40 38,lO - 5 25.60 127,00 12,70 101,60 35,80 3,51 131,77 87,31 57,20 50,80 38,lO 25,40 38,lO - 5-l I2 21.90 139,70 9,17 121,36 29,61 4,81 141,30 101,60 57,20 50,80 38,lO 25,40 38,lO - 5-l I2 24.70 139,70 10,54 118,62 33,45 4,09 141,30 101,60 57,20 50,80 38,lO 25,40 38,lO - 6-518 25.20 168,28 8,38 151,52 32,93 11,85 176,00 135,00 114,30 50,80 76,20 - - 139,70 6-518 27.70 168,28 9,19 149,90 35,93 IO,90 176,00 135,oo 114,30 50,80 76,20 - - 139,70 1) Labels are shown for the purpose of identification in ordering. 2) For mass gain due to end finishings see 7.4 3) The specified upset dimensions do not necessarily agree with the bore and outside diameter dimensions of finished weld-on assemblies. Upset dimensions were chosen to accommodate the various bores of tool joints and to maintain a satisfactory cross section in the weld zone after final machining of the assembly. 4) By agreement between interested parties, the length of upset for grade E drill pipe may be the same as for the higher grades listed in Group 3. 5) For internal-upset drill pipe, the tolerance on the outside diameter of the upset, Dou, shall be I;‘* mm. A slight external upset within these tolerances is permissible. 6) Maximum taper on inside diameter of internal upset and internal-external upset is 2,08 % on diameter. 7) Pipe with label 3-l/2-13.30 external-upset drill pipe has a slight internal upset not illustrated in figure 3. 8) Liu tolerance for 6-5/8 masses is IF:;“,” mm. 7 9) These sizes and masses are tentative. m SIST EN ISO 11961:2000

Table 5 - Dimensions and masses - Group 3 - Upset drill pipe for weld-on tool joints (See figure 4) Calculated mass2) Upset dimensions3) Wall Inside Length end of Label&) Outside thick- Inside Outside Length Length Length of diameter diameter Plain end Upset diameter 4) diameter at end of internal internal external pipe to taper fadeout external ness pipes) upset 6) taper upset upset 1 2 D t d mpe mW D ou d ou Liu 4u L eu Leu + Ieu + 3,18 Ik - 0,79 1,59 + 38.10 - 12,70 min. min. max. mm mm mm kg/m kg mm mm mm mm mm mm Internal-upset drill pipe 2-718 10.40 73,03 9,19 54,64 3-l/2 13.30 88,90 9,35 70,20 4 14.00 101,60 8,38 84,84 5 16.25 127,00 7,52 Ill,96 2-318 6.65 60,33 7,ll 46,ll 2-718 10.40 73,03 9,19 54,65 3-I/2 13.30 88,90 9,35 70,20 3-112 15.50 ‘88,90 II,40 66,lO 4 14,00 101,60 8,38 84,84 4-l/2 16.60 114,30 8,56 97,18 4-I/2 20.00 114,30 IO,92 92,46 5 19.50 127,00 9,19 108,62 5 25.60 127,00 12,70 101,60 14,47 2,45 73,03 33,34 88.90 38,lO - 18,26 3,36 88,90 49,21 88,90 38,lO - 19,31 4,00 101,60 66,68 88,90 50,80 - 22,lO 6,17 127,00 go,49 88,90 - External-upset drill pipe 9,31 2,09 67,46 39,69 107,95 - 76,20 139,70 14,47 2,80 82,55 49,21 107,95 - 76,20 139,70 18,26 4,63 101,60 63,50 107,95 50,80 76,20 139,70 21,79 3,72 101,60 63,50 107,95 - 76,20 139,70 19,31 6,54 117,48 77,79 107,95 - 76,20 139,70 22,42 7,81 131,78 go,49 107,95 - 76,20 139,70 27,79 7,26 131,78 87,31 107,95 - 76,20 139,70 26,73 9,81 146,05 100,01 107,95 - 76,20 139,70 35,80 9,62 149,22 96,84 107,95 - 76,20 139,70 SIST EN ISO 11961:2000

Table 5 (concluded’) Calculated mass2) Upset dimensions3) Wall Outside Inside Length end of Labels1 ) Outside thick- Inside Plain end Upset diameter41 diameter Length Length Length of at end of internal internal external pipe to taper diameter diameter fadeout external ness pipes) upseN taper upset upset 1 2 D t d mPe mW D ou d ou Liu 4u L eu Leu + zeu + 3,18 + 38,lO - 0,79 f I,59 - 12,70 min. min. max. mm mm mm kg/m kg mm mm mm mm mm mm Internal-external-upset drill pipe 3-112 15.50 88,90 11,40 66,lO 21,79 4,99 96,04 49,21 107,95 - 76,20 139,70 4-112 16.60 114,30 8,56 97,18 22,42 3,95 118,26 73,03 63,50 50,80 38,lO 76,20 4-l/2 20.00 114,30 IO,92 92,46 27,79 7,99 121,40 71,44 107,95 50,80 76,20 139,70 5 19.50 127,00 9,19 108,62 26,73 7,63 131,78 go,49 107,95 50,80 76,20 139,70 5 25.60 127,00 12,70 101,60 35,80 6,99 131,78 84,14 107,95 50,80 76,20 139,70 5-I/2 21.90 139,70 9,17 121,36 29,61 9,53 141,30 96,84 107,95 50,80 76,20 139,70 5-l/2 24.70 139,70 10,54 118,62 33,45 8,35 141,30 96,84 107,95 50,80 76,20 139,70 6-518 25.20 168,28 8,38 151,52 32,93 II,85 176,00 135,oo 114,30 50,80 76,20 139,70 6-518 27.70 168,28 9,19 149,90 35,93 IO,90 176,00 135,oo 114,30 50,80 76,20 139,70 1) Labels are shown for the purpose of identification in ordering. 2) For mass gain due to end finishings see 7.4 3) The specified upset dimensions do not necessarily agree with the bore and outside diameter dimensions of finished weld-on assemblies. Upset dimensions were chosen to accommodate the various bores of tool joints and to maintain a satisfactory cross section in the weld zone after final machining of the as- sembly. 4) For internal-upset drill pipe, the tolerance on the outside diameter of the upset, Dou, shall be ‘i”* mm. A slight external upset within these tolerances is per- missible. 5) Maximum taper on inside diameter of internal upset and internal-external upset is 2,08 % on diameter. 6) Liu tolerance for 6-5/8 masses is +50,80 -12 7. mm. . co SIST EN ISO 11961:2000

IS0 11961:1996(E) @ IS0 Internal upset External upset Internal-external upset NOTE - See table 4 for drill pipe dimensions. Figure 3 - Upset drill pipe for weld-on tool joints - Group 1 Internal upset liu Liu External upset I- Liu _ 1 liu Internal-external upset NOTES 1 Permissible internal taper within length Li” shall teed 21 mm per metre on diameter. 2 See table 5 for drill pipe dimensions. not ex- Figure 4 - Upset drill pipe for weld-on tool joints - Group 3 10 SIST EN ISO 11961:2000

IS0 11961:1996(E) Table 6 - Length ranges Dimensions in metres Property Total length incl. range, Length range for 95 % or more of carload: Permissible variation, max. Permissible length, min. Length range for 90 % or more of carload Permissible variation, max. Permissible length, min. Range 1 549 min. 6,71 max. 0,61 6,lO Range 2 8,23 min. 9,14 max. 0,61 8,23 Range 3 1158 min. 13,72 max. 0,91 II,58 7.8 Tolerances on dimensions and masses 7.8.5 Upset dimensions 7.8.1 Outside diameter, D s 101,6 mm + 0,79 mm > 114,3 mm +I,~ 0 -0,50 h The following tolerances apply to the outside diameter of the drill pipe body immediately behind the upset for a distance of approximately 127 mm. Measurements shall be made with calipers or snap gauges. Pipe size, D mm Tolerance behind I,, I 60,30-88,90 +2,38 - 0,79 mm 101,60-l 27,00 + mm - 2,78 0,750/100 139,70-l 68,28 + - 3,18 0,750/100 mm 7.8.2 Wall thickness, t - 125 % , 7.8.3 Mass Single lengths +6,5 o / -3,5 O Carload lots - I,75 % A carload is considered to be a minimum of 18 144 kg. 7.8.4 Inside diameter, d This is governed by the outside diameter and mass tolerances. Tolerances on upset dimensions are given in tables 4 and 5. 7.8.6 Eccentricity For the outside diameter, the maximum eccentricity, measured with a saddle gauge according to figure 5 at a distance of 127 mm to 152 mm from the end of the upset, shall not exceed 2,36 mm (total indicator read- ing). For the inside diameter, the maximum eccentricity of the bore of the upset with respect to the outside sur- face of the drill pipe shall not be more than, I,59 mm (3,18 mm total indicator reading). 7.8.7 Ovality Maximum ovality, measured with a micrometer on outside diameter of upset, shall not exceed 2,36 mm. 7.9 Pipe ends Drill pipe shall be furnished with upset ends for at- tachment of rotary connections by welding, unless otherwise agreed upon between interested parties in which case all stipulations herein, other than end finish and calculated masses, shall govern. The inside and outside edges of the ends of all pipes shall be free from burrs. NOTE 2 Special marking as shown in clause 9 is required for drill pipe furnished with plain ends or end finishes not specified herein, but having the body of the pipe manufac- tured in accordance with the requirements specified herein. 11 SIST EN ISO 11961:2000

IS0 11961:1996(E) @ IS0 Dimensions in millimetres 152 127 304,8 - C-- 304,8 C Figure 5 - Saddle gauge for measuring eccentricity of drill pipe 8 Inspection and testing 8.1 General When stated on the purchase order, the provisions of annex C shall apply. 8.1.1 Mill control tests One tensile test shall be made as a control on each heat of steel used by the manufacturer for the pro- duction of pipe according to this International Stan- dard. A record of such tests shall be available to the pur- chaser. 8.1.2 Measuring devices If measuring equipment, whose calibration or verifi- cation is required under the provisions of this Interna- tional Standard, is subjected to unusual or severe conditions such as would make its accuracy question- able, recalibration or reverification shall be performed before further use of the equipment. 8.2 Chemical composition 8.2.1 Heat analyses When requested by the purchaser, the manufacturer shall furnish a report giving the heat analysis of each heat of steel used in the manufacture of pipe furnished on the purchase order. In addition the purchaser, upon request, shall be furnished the results of quantitative analyses of other elements in addition to phosphorus and sulfur normally used by the manufacturer to con- trol physical properties. 8.2.2 Product analyses Product analyses of each heat of steel used shall be made on pipe. The results of the product analyses shall be made available to the purchaser on request. Product analyses shall include the results of quantita- tive determinations of phosphorus and sulfur and in addition, all other elements normally used by the manufacturer to control mechanical properties. Two samples shall be analyzed for product analysis. 8.3 Mechanical properties 8.3.1 Frequency of testing 8.3.1 .I Tensile test 8.3.1.1.1 Group 1 One tensile test shall be made on a length of drill pipe from each lot of 400 lengths or less of each size 139,70 mm and smaller, and from each lot of 200 lengths or less of each size 168,28 mm and larger provided that all the lengths in the lot have received the same heat treatment. For multiple length seamless pipe, a length shall be considered as all of the sections cut from a particular multiple length. 8.3.1.1.2 Group 3 One tensile test shall be made on a length of drill pipe from each lot of 200 lengths or less of each size 139,70 mm and smaller, and from each lot of 100 lengths or less of each size 168,28 mm and larger provided that all the lengths in the lot have received the same heat treatment. For multiple length seamless pipe, a length shall be considered as all of the sections cut from a particular multiple length. 8.3.1.2 Impact testing - Group 3 Three Charpy V-notch specimens representing one test shall be taken from one length of drill pipe from each lot of 200 lengths or less of size 13970 mm and smaller, and from each lot of 100 lengths or less of 12 SIST EN ISO 11961:2000

0 IS0 IS0 11961:1996(E) size 168,28 mm provided that all lengths have re- ceived the same heat treatment. For multiple length seamless pipe, a length shall be considered as all of the sections cut from a particular multiple length. 8.3.2 Test specimens 8.3.2.1 Tensile test Tensile test specimens from the pipe body shall be either full section specimens, strip specimens or round bar specimens, as shown in figure 6, at the discretion of the manufacturer. The type and size of specimen shall be reported. Round bar specimens shall be taken from the mid-wall. Strip specimens and round bar specimens may be taken from any location about the pipe circumference at the discretion of the manufac- turer. Tensile test specimens shall be removed from pipe subsequent to final heat treatment on the produc- tion line. All strip specimens shall be approximately 38,1 mm wide in the gauge length if suitable curved face testing grips are used, or if the ends of the specimen are machined or cold flattened to reduce the curvature in the grip area; otherwise they shall be ap- proximately 19 mm wide for pipe 88,90 mm and smaller and approximately 25,40 mm for pipe 101,60 mm and larger. All specimens shall represent the full wall thickness of the pipe from which the specimen was cut, except for round bar tensile speci- mens, and shall be tested without flattening. The 12,50 mm diameter round bar specimen shall be used when the pipe size allows, and the 8,75 mm diameter round bar specimen shall be used for other sizes. For pipe sizes too small to allow an 8,75 mm specimen, round bar tensile specimens are not permitted. ing gages shall be documented. The adjustable and non-adjustable designation utilized by the manufac- turer shall be documented. Dimensions in millimetres a) Tensile specimens from the pipe body 5?,2 min. =-~ Reduced section R 25,4 mini\ b,8 G5~ _llt Gauge length b) Strip specimens 0 / / -\ 0 -0 / \ / Properties Tensile of Tensile of 0 12,7 0 8,75 1 Length, Lo I 50,8 +0,13 1 35,6 f 0,13 8.3.2.2 Impact specimens I Diameter, d I 12,7 + 0,25 1 8,75 AI 0,18 Three specimens shall be taken parallel to the axis of the pipe with the notch oriented radially as shown in figure 7. Impact specimens shall not be machined from pipe which has been flattened. Standard specimens IO mm x 10 mm in cross-section shall be used unless the wall thickness of the pipe to be tested is of insufficient thickness, in which case the largest obtainable subsize specimen shall be used. 8.4 Dimensional testing and mass determination 8.4.1 General The accuracy of all measuring instruments used for acceptance/rejection shall be verified at least once every operating shift. Accuracy verification of rules, length measuring tapes and other non-adjustable measuring devices shall be defined as a visual check of marking legibility and the general wear of fixed ref- erence points. The verification procedure of the work- I Radius, R I 10 min. I 6 min. Length, L, 60 min. 45 min. c) Round bar specimens Figure 6 - Tensile test specimens Figure 7 - Impact test specimen orientation 13 SIST EN ISO 11961:2000

IS0 11961 :1996(E) 8.4.2 Wall thickness Each length of pipe shall be measured for con- formance with wall thickness requirements. Wall thickness measurements shall be made with a mechanical caliper or with a properly calibrated non- destructive device of appropriate accuracy. In case of dispute, the measurement determined by use of the mechanical caliper shall govern. The mechanical cali- per shall be fitted with contact pins having a circular cross section of 6,35 mm. The end of the pin contact- ing the inside surface of the pipe shall be rounded to a maximum radius of d/4 with a minimum radius of 3,18 mm. The end of the pin contacting the outside surface of the pipe shall be either flat or rounded to a radius not less than 38,lO mm. 8.4.3 Drift test All drift testing shall be performed with a drift mandrel containing a cylindrical portion conforming to the re- quirements given in 7.7. The ends of the drift mandrel extending beyond the specified cylindrical portion shall be shaped to permit easy entry into the pipe. The drift mandrel shall pass freely through the pipe by the use of a manual or power drift procedure. In case of dispute, the manual drift procedure shall be used. Drill pipe shall not be rejected until it has been drift tested when free of all foreign matter and properly supported to prevent sag- ging . 8.4.4 Length The length shall be measured from end to en ing the upsets but not including the tool joints. d includ- 8.4.5 Mass determination Each length of drill pipe shall be weighed separately. The pipe manufacturer or pipe processor shall be re- sponsible for weighing to determine conformance with mass tolerance. The pipe may be weighed plain end, upset or non-upset. For drill pipe with integral rotary connections or attached rotary connections, allowance for the effective connection mass shall be made. 8.4.6 Straightness All of pipes shall excessively be be visually nt pipes examined. or hooked The straightness extremities shall The . light chord or straight edge s the maxi mum deviation. hall be positioned to high- Deviation from straight, or chord height, shall not exceed the requirements given in 7.6. See figures 1 and 2. Measurement of the deviation shall not be made in the plane of the upset, the upset fadeout. 8.5 Visual inspection 8.5.1 Workmanship All finished drill pipe shall be visually inspected for im- perfections and shall be free from defects as defined hereafter. a) Any linear imperfection on the inner or outer sur- face of the pipe that is deeper than 12,5 % of the specified wall thickness or which reduces the thickness remaining at the root of the imperfection to less than 87,5 % of the specified wall thickness shall be considered as a defect. b) Any non-linear imperfection, such as a pit, having a depth greater than 12,5 % of the specified wall thickness, measured from the surface of the pipe, shall be considered as a defect. Drill pipe containin g defects following dispositio ns: shall be given one of the a) the defect may be removed by grinding provided the remaining wall thickness be not less than 87,5 % of the specified wall thickness. When the depth of grind exceeds IO % of the specified wall thickness, the remaining wall thickness shall be verified in accordance with 8.4.2; b) the section of pipe containing the defect may be cut off within the limits of requirements of the length; C) the pipe may be rejected. NOTES 3 When wall thickness is reduced by the purchaser or third party inspector and the remaining wall thickness is less than 87,5 % of the specified wall thickness, grinding of the defect should be conducted in such a way that the linear imperfection remains detectable in the area of reduced wall thickness by visual, magnetic particle or dye penetrate in- spections. Repair welding is not permitted. be verified 4 Linear imperfections include, but are not limited to, seams, laps, cracks, plug scores, cuts and gouges. - using a straight edge or taut string (wire) from one end of the pipe to the other end of the pipe; 8.5.2 Surface inspection of upsets - using a minimum I,83 m straight edge shouldered on the pipe surface beyond the extent of the hooked extremity. The upset portion of drill pipe shall be visually exam- ined for imperfections. The minimum wall thickness in 14 SIST EN ISO 11961:2000

@ IS0 the internal and external upset intervals shall be not less than 875 % of the specified pipe body wall thick- ness. The maximum permissible depth of imperfec- tions measured from the surface shall be as follows. 852.1 External surface From the end of the pipe to a plane at a distance equal to the specified minimum dimension L,, (see figures 3 and 4, and tables 4 and 5) from the end of the pipe as indicated by the requirement for maintaining dimen- sion D,,. From the plane as specified above to the upset runout: 12,5 % of the specified pipe body wall thickness. 852.2 Internal surface From the end of the pipe to a plane at a distance equal to the specified minimum dimension Li” (see figures 3 and 4) from the end of the pipe as indicated by the re- quirement for maintaining dimension D,,. From the plane as specified above to the upset runout: 125 % of the specified pipe body wall thickness. NOTES 5 The maximum combined effect of coincident internal and external imperfections in the area is limited by the wall thickness specified in 8.4.2. 6 The internal upset configuration on all upset products should exhibit no sharp corners or drastic changes of sec- tions, and permit a 90 degree hook type tool to be pulled through without hangup. 8.6 Non-destructive inspection 8.6.1 General In addition to visual inspection all pipe shall be in- spected full length for longitudinal defects by either magnetic particle inspection or by ultrasonic or elec- tromagnetic methods, and on the ends of upset pipe for transverse defects by the magnetic particle method. The location of the equipment in the mill shall be at the discretion of the manufacturer; however, the non-destructive inspection shall take place after final heat treatment and any subsequent rotary straighten- ing operation. 8.6.2 Magnetic particle inspection When magnetic particle inspection is employed to inspect for longitudinal defects, the entire outside surface and the inside surface for a distance of 152,4 mm shall be inspected. The outside and inside surfaces of the ends of upset pipe shall be inspected for transverse defects by the magnetic particle method. Magnetic particle inspection of drill pipe may be employed on the inside surface after heat treating and before the ends are cropped. If defects are found, further cropping is permissible provided the inside surface is again inspected by the magnetic particle in- sp
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