1、BSI Standards PublicationPD ISO/PAS 12835:2013Qualification of casingconnections for thermal wellsCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD ISO/PAS 12835:201
2、3 PUBLISHED DOCUMENTNational forewordThis Published Document is the UK implementation of ISO/PAS12835:2013.The UK participation in its preparation was entrusted to TechnicalCommittee PSE/17, Materials and equipment for petroleum,petrochemical and natural gas industries.A list of organizations repres
3、ented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 81
4、415 0ICS 75.180.10; 75.200Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 28 February 2014.Amendments issued since publicationDate Text affectedCopyright British
5、 Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD ISO/PAS 12835:2013 ISO 2013Qualification of casing connections for thermal wellsQualification des raccordements de botiers pour les
6、puits thermiquesPUBLICLY AVAILABLE SPECIFICATIONISO/PAS12835First edition2013-12-15Reference numberISO/PAS 12835:2013(E)Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-
7、,-PD ISO/PAS 12835:2013ISO/PAS 12835:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photoc
8、opying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-
9、mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD ISO/PAS 12835:2013ISO/PAS 12835:2013(E) ISO 2013 All ri
10、ghts reserved iiiContents PageForeword vIntroduction vi1 Scope .12 Normative references 13 Terms and definitions .14 Abbreviations, symbols and illustrations of selected definitions .54.1 Abbreviations . 54.2 Symbols . 64.3 Illustrations of selected definitions . 75 Program flowchart 76 Overview and
11、 fundamental assumptions of TWCCEP 86.1 General . 86.2 Main TWCCEP features 86.3 Assessment philosophy and principles 106.4 Evaluation variables 146.5 Evaluation procedure . 176.6 Scope of reporting . 207 Program roles and proprietary design information 207.1 Program execution roles 207.2 Proprietar
12、y connection design information . 208 Compliance requirements .218.1 Compliant evaluation program 218.2 Program non-conformances . 218.3 Performance acceptance . 228.4 Conformance of results from previous TWCCEP evaluations228.5 Use of data from previous evaluations 228.6 Conformance to lower ASLs 2
13、39 Application severity levels 249.1 Thermal well load path . 249.2 Temperature as controlling parameter . 259.3 Definition of application severity level .269.4 Selection of application severity level 2710 Program blocks and tasks 2710.1 Evaluation tasks and sequence Overview . 2710.2 Critical path
14、tasks 3111 TWCCEP program specifications .3211.1 General requirements 3211.2 Identification of program roles 3211.3 Identification of candidate connection . 3311.4 Program options . 3511.5 Data from prior evaluations . 3512 Determination of biased test population .3512.1 Overall description . 3512.2
15、 Initial material property characterization .3612.3 Specimen configuration analysis 4313 Specimen procurement 5613.1 Task description 5613.2 Specimen pipe procurement 5713.3 Material property verification 57Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled
16、 Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD ISO/PAS 12835:2013ISO/PAS 12835:2013(E)iv ISO 2013 All rights reserved13.4 Test specimen machining 5913.5 Markings 6513.6 Specimen geometry verification .6513.7 Procurement and quality control of connection i
17、nterfacial components .6713.8 Specimen handling and storage 6714 Full-scale physical tests and supplementary analyses .6814.1 Overall task description .6814.2 Full-scale tests - General requirements 6914.3 Galling resistance test 7314.4 Thermal cycle test . 7814.5 Bending evaluation (optional task)
18、9514.6 Limit-strain test 10414.7 As-tested configuration analysis 11615 Evaluation and inspection reports .11615.1 Reporting deliverables .11615.2 Reporting scope and contents .11615.3 Reporting templates .120Annex A (normative) FEA modelling guidelines 121Annex B (informative) Derivations of formul
19、as127Annex C (informative) Program role assignments and responsibilities .136Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD ISO/PAS 12835:2013ISO/PAS 12835:2013(E
20、)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a t
21、echnical 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. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters
22、 of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This docume
23、nt was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such
24、 patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does
25、not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informati
26、onThe committee responsible for this document is ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 5, Casing, tubing and drill pipe. ISO 2013 All rights reserved vCopyright British Standards Institution Provided by IHS un
27、der license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD ISO/PAS 12835:2013ISO/PAS 12835:2013(E)IntroductionThis Thermal Well Casing Connection Evaluation Protocol (TWCCEP) provides procedures for assessment and thereby enables ev
28、aluation of suitability of threaded casing connections for service in intermediate or production casing strings of thermal recovery wells. The TWCCEP defines such wells as those with operating temperatures that cyclically vary between minimum values appreciably below 180C and maximum values that ran
29、ge from 180C to 350C, in which the casing string is cemented and the primary axial loading is strain-based.Throughout this document, a casing connection subject to evaluation is referred to as candidate connection. A candidate connection denotes a product with unique design features and production s
30、pecifications for size, weight, and component materials (including pin, box, and interfacial components).The TWCCEP assesses the candidate connections galling resistance, structural integrity and sealability under loads typical for connection assembly and thermal-well service. The TWCCEP does not ad
31、dress impacts of external pressure, incomplete lateral pipe support, rotational fatigue, formation-induced shear, or environmentally-induced corrosion or cracking.The TWCCEPs evaluation procedure includes analysis and full-scale testing. In the analysis, worst-case combinations of the connection geo
32、metry and material properties are determined and specifications for test specimens are derived. In the full-scale tests, those specimens are subjected to loading representative of thermal well operations. While the TWCCEP aims to enable a statistically significant full-scale test, it does not demand
33、 a rigorous check of a true statistical placement of the tested sample responses relative to field connection performance, and thus inherently assumes that the test specimens are representative of subsequent field connections. For this reason, only connections with the same design parameters as the
34、candidate connection should be considered representative of the connection assessed under this protocol.The extensive effort involved in replicating thermal well field conditions in a laboratory environment limits the extent of physical testing that can reasonably be undertaken in an evaluation prog
35、ram. This protocol balances technical rigor and practicality to provide a baseline level of confidence in the candidate connections performance. Connection users should consider the scope of this evaluation and appropriate additions to address operation-specific conditions. Successful field use of a
36、 connection meeting the requirements of this protocol does not preclude an operators need to employ appropriate product quality assurance measures and field operating practices.The TWCCEP is the culmination of a thorough review of factors contributing to performance of casing connections in thermal
37、well applications. This protocol has been developed using input from operators descriptions of field practices, manufacturers feedback on connection design and production, available literature, knowledge of past connection qualification programs, and additional analytical and experimental work perfo
38、rmed in support of the protocol development. The TWCCEP is intended to be maintained and refined as new findings surface.vi ISO 2013 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permi
39、tted without license from IHS-,-,-PD ISO/PAS 12835:2013Qualification of casing connections for thermal wells1 ScopeISO/PAS 12835 is intended for assessment of casing connections for those field applications in which the design of the casing-connection system is strain-based, and in which primary axi
40、al loading is on the casing-connection system driven by constrained thermal expansion, and in which that primary loading exceeds the casing-connection systems yield envelope. Consequently, ISO/PAS 12835 should be considered as a protocol that is complementary to ISO 13679, which applies to classic e
41、lastic-design applications.ISO/PAS 12835 describes the structure of the Thermal Well Casing Connection Evaluation Protocol (TWCCEP) and provides guidelines for its use by new or repeat TWCCEP users, whose familiarity with the TWCCEP provisions might vary. Clause 6 describes fundamental assumptions a
42、dopted in the T WCCEP.NOTE The term “user” refers to a party that uses the TWCCEP in a connection evaluation program. That party might or might not be the same party as a later user of the evaluated connection in a field application.2 Normative referencesThe following documents, in whole or in part,
43、 are normatively referenced in this document and are indispensable for its application. For dated references, only the cited edition applies. For undated references, the latest editions of the reference documents apply.ASTM A370, Standard Test Methods and Definitions for Mechanical Testing of Steel
44、ProductsASTM E8, Standard Test Methods for Tension Testing of Metallic MaterialsASTM E21, Standard Test Methods for Elevated-Temperature Tension Tests of Metallic MaterialsASTM E831-06, Linear Thermal Expansion of Solid Materials by Thermomechanical AnalysisISO 9001, Quality management systems Requi
45、rementsISO 11960, Petroleum and natural gas industries Steel pipe for use as casing and tubing for wells1)ISO 13679:2002, Petroleum and natural gas industries Procedures for testing casing and tubing connections2)3 Terms and definitionsFor the purpose of this document, the following terms and defini
46、tions apply.3.1ambient temperatureambient temperature in the facility where a physical testing task is executed1) Based on API Specification 5CT.2) Based on API Specification 5C5.PUBLICLY AVAILABLE SPECIFICATION ISO/PAS 12835:2013(E) ISO 2013 All rights reserved 1Copyright British Standards Institut
47、ion Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD ISO/PAS 12835:2013ISO/PAS 12835:2013(E)3.2application severity levelconnection loading specifications assumed to be representative for a range of opera
48、tional conditions, which determine the scope of analysis and testing required by the evaluation procedure (3.15) for those operational conditions3.3assignerparty that commissions an evaluation program (3.16)3.4average string strainaverage axial strain along the controlled elongation interval (3.13) of a specimen string (3.37)3.5bend test specimenssubset of candidate connection specimens (3.8) subjected to the optional bending evaluation (3.6) per the TWCCEP evaluation procedure (3.15)3.6bending evaluationanalysis and physical testing conducted to determine a candidate connections (3.
