1、BRITISH STANDARD BS EN ISO 10427-1:2002 Incorporating Corrigendum No. 1 Petroleum and natural gas industries Casing centralizers Part 1: Bow-spring casing centralizers The European Standard EN ISO 10427-1:2001 has the status of a British Standard ICS 75.180.10 BS EN ISO 10427-1:2002 This British Sta
2、ndard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 13 February 2002 BSI 15 October 2002 ISBN 0 580 38994 4 National foreword This British Standard is the official
3、 English language version of EN ISO 10427-1:2001. It is identical with ISO 10427-1:2001. The UK participation in its preparation was entrusted by Technical Committee PSE/17, Materials and equipment for petroleum and natural gas industries, to Subcommittee PSE/17/-/3, Drilling and completion fluids a
4、nd well cements, which has the responsibility to: BS EN ISO 10427-1 deals only with bow-spring casing centralizers, which are the most commonly applied types of centralizer for placing the casing more centrally in the wellbore. Bow-spring casing centralizers are made of bows which are like springs w
5、ith sufficient stiffness to give suitable standoff downhole, but with enough flexibility for employment in holes of different diameters and shapes. Rigid centralizers are constructed with a fixed bow-height and are designed to fit a specific casing or wellbore size. It is intended that rigid central
6、izers will be covered by new standards in the ISO 10427 series. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be foun
7、d in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are respo
8、nsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep t
9、he UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to
10、 10, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 14173 Corrigendum No. 1 15 October 2002 Correction to EN ISO foreword pageEUROPEANSTANDARD NORMEEUROPE
11、NNE EUROPISCHENORM ENISO104271 October2001 ICS07.018.10 Englishversion PetroleumandnaturalgasindustriesCasingcentralizersPart 1:Bowspringcasingcentralizers(ISO104271:2001) IndustriesduptroleetdugaznaturelCentreursdetubes Partie1:Centreursdetubesdecuvelage(ISO10427 1:2001) ThisEuropeanStandardwasappr
12、ovedbyCENon1October2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtothe
13、ManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationa
14、lstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:r
15、uedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO104271:2001ECORRECTED20020925 Foreword Thisdocument(ENISO104271:2001)hasbeenpreparedbyTechnicalCommitteeISO/TC 67“Materials,equipmentandoffshorestructuresforpetroleu
16、mandnaturalgasindustries“in collaborationwithTechnicalCommitteeCEN/TC12“Materials,equipmentandoffshore structuresforpetroleumandnaturalgasindustries“,thesecretariatofwhichisheldby AFNOR. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublication ofanidenticaltextorbyendorsement
17、,atthelatestbyApril2002,andconflictingnational standardsshallbewithdrawnatthelatestbyApril2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium, CzechRepublic,Denmark,Finland,France,Germany,
18、Greece,Iceland,Ireland,Italy, Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnited Kingdom. Endorsementnotice ThetextofISO104271:2001hasbeenapprovedbyCENasENISO104271:2001without anymodifications. ENISO104271:2002Reference number ISO 10427-1:2001(E) INTERNATIONAL STANDARD ISO
19、10427-1 First edition 2001-10-01 Petroleum and natural gas industries Casing centralizers Part 1: Bow-spring casing centralizers Industries du ptrole et du gaz naturel Centreurs de tubes Partie 1: Centreurs de tubes de cuvelage ENISO104271:2001ii ENISO104271:2001iii Contents Page Foreword.iv Introdu
20、ction.v 1 Scope 1 2 Normative reference 1 3 Terms and definitions .1 4 Requirements.2 5 Testing equipment.3 6 Procedure for starting-force and running-force tests5 7 Procedure for restoring-force test .6 8 Marking .7 Annex A (informative) Miscellaneous information.8 Bibliography10 ENISO104271:2001iv
21、 Foreword ISO (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
22、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. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matter
23、s of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard
24、requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 10427 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standa
25、rd ISO 10427-1 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum and natural gas industries, Subcommittee SC 3, Drilling and completion fluids, and well cements. This first edition of ISO 10427-1 cancels and replaces, in part, the first edition
26、 of ISO 10427 (ISO 10427:1993), which has been technically revised. ISO 10427 consists of the following parts, under the general title Petroleum and natural gas industries Casing centralizers: Part 1: Bow-spring casing centralizers Part 2: Centralizer placement and stop-collar testing Annex A of thi
27、s part of ISO 10427 is for information only. ENISO104271:2001v Introduction This part of ISO 10427 is based on API Specification 10D, 5th edition, January 1995. Users of this part of ISO 10427 should be aware that further or differing requirements may be needed for individual applications. This part
28、 of ISO 10427 is not intended to inhibit a vendor from offering, or the purchaser from accepting, alternative equipment or engineering solutions for the individual application. This may be particularly applicable where there is innovative or developing technology. Where an alternative is offered, th
29、e vendor should identify any variations from this part of ISO 10427 and provide details. In this part of ISO 10427, where practical, U.S. Customary units are included in brackets after SI units for information. ENISO104271:2001ENISO104271:2001INTENRATIONAL TSANDADR ISO -724011:(1002E) ISO 1002 All r
30、ights rsedevre 1 Petroleum and natural gas industries Casing centralizers Part 1: Bow-spring casing centralizers 1 Scope This part of ISO 10427 provides minimum performance requirements, test procedures and marking requirements for bow-spring casing centralizers for the petroleum and natural gas ind
31、ustries. The procedures provide verification testing for the manufacturers design, materials and process specifications, and periodic testing to confirm the consistency of product performance. This part of ISO 10427 is not applicable to rigid or positive centralizers. 2 Normative reference The follo
32、wing normative document contains provisions which, through reference in this text, constitute provisions of this part of ISO 10427. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 10427
33、are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standard
34、s. ISO 11960, Petroleum and natural gas industries Steel pipes for use as casing or tubing for wells 3 Terms and definitions For the purposes of this part of ISO 10427, the following terms and definitions apply. 3.1 flexed condition of a bow spring when a force three times the specified minimum rest
35、oring force ( 5 %) has been applied to it 3.2 holding device d e vi cee mp l oy e dtofi xthesto pcol la ro rce n tra liz e rtotheca sin g EXAMPLES Set screws, nails, mechanical dogs and epoxy resins. 3.3 holding force maximum force required to initiate slippage of a stop collar on the casing 3.4 hol
36、e size diameter of the wellbore ENISO104271:20011ISO -724011:(1002E) 2 ISO 1002 All rights rsedevre 3.5 restoring force force exerted by a centralizer against the casing to keep it away from the wellbore wall NOTE Restoring force values can vary based on installation methods. 3.6 rigid centralizer c
37、entralizer manufactured with bows that do not flex 3.7 running force maximum force required to move a centralizer through a specified wellbore diameter NOTE Running-force values can vary depending on the installation methods. 3.8 standoff smallest distance between the outside diameter of the casing
38、and the wellbore 3.9 standoff ratio ratio of standoff to annular clearance NOTE It is expressed as a percentage. 3.10 starting force maximum force required to insert a centralizer into a specified wellbore diameter NOTE Starting-force values can vary depending on the installation methods. 3.11 stop
39、collar device attached to the casing to prevent movement of a casing centralizer NOTE A stop collar can be either an independent piece of equipment or integral with the centralizer. 4 Requirements 4.1 Functions of a centralizer The purpose of a casing centralizer is to facilitate running casing to t
40、he desired depth and to assist in centring the casing in the wellbore. One of the main objectives of centralizing a casing string is to facilitate a good cementing, thereby isolating fluids from different zones. A bow-spring centralizer can be constructed in various ways, using various types, shapes
41、 and quantities of bow spring. 4.2 Starting force The maximum starting force shall be less than the weight of 12,19 m (40 ft) of casing of medium linear mass as defined in Table 1. The maximum starting force shall be determined for a centralizer in new, fully assembled condition. 4.3 Restoring force
42、 The minimum restoring force for a 67 % standoff ratio shall not be less than the values shown in Table 1. See A.2 for the derivation of the requirements. ENISO104271:20012ISO -724011:(1002E) ISO 1002 All rights rsedevre 3 Table 1 Specifications Casing centralizers Casing diameter Medium linear mass
43、 casing Minimum restoring force at 67 % standoff ratio Maximum starting force mm (in) kg/m (lb/ft) N (lbf) N (lbf) 89 102 114 (3 ) a (4) a (4 ) 14,7 16,9 17,3 (9,91) a (11,34) a (11,6) 1 761 2 019 2 064 (396) (454) (464) 1 761 2 019 2 064 (396) (454) (464) 127 140 168 (5) (5 ) (6 5 / 8) 19,3 23,1 35
44、,7 (13,0) (15,5) (24,0) 2 313 2 758 4 270 (520) (620) (960) 2 313 2 758 4 270 (520) (620) (960) 178 194 219 (7) (7 5 / 8) (8 5 / 8) 38,7 39,3 53,6 (26,0) (26,4) (36,0) 4 626 4 697 6 405 (1 040) (1 056) (1 440) 4 626 4 697 6 405 (1 040) (1 056) (1 440) 244 273 298 (9 5 / 8) (10 ) (11 ) 59,5 75,9 80,4
45、 (40,0) (51,0) (54,0) 7 117 4 537 4 804 (1 600) (1 020) (1 080) 7 117 9 074 9 608 (1 600) (2 040) (2 160) 340 406 473 508 (13 3 / 8) (16) (18 5 / 8) (20) 90,8 96,7 130,2 139,9 (61,0) (65,0) (87,5) (94,0) 5 427 5 783 7 784 8 363 (1 220) (1 300) (1 750) (1 880) 10 854 11 565 15 569 16 725 (2 440) (2 6
46、00) (3 500) (3 760) NOTE The specifications for starting and restoring forces for bow-type centralizers are based on the centralizer being installed as per manufacturer recommendations and tested with lugs on the casing. If the centralizer is tested over a casing collar, stop collar, or with an inte
47、gral stop collar, the actual results obtained from that test can vary from the specifications. It should be noted on the test report how the centralizer was installed and the type of holding device used during the test. If a centralizer is tested in this manner, the test can no longer be considered
48、a specification test and the results may or may not meet the specifications set forth in Table 1. a Liner sizes and plain-end weight. 4.4 Frequency of testing 4.4.1 Tests for design and process verification shall be performed for a minimum of six prototype centralizers. All of the tested centralizers shall conform to the performance requirements of Table 1. 4.4.2 For
