ISO INTERNATIONAL STANDARD 10427-2 First edition 2004-05-01 Petroleum and natural gas industries - Equipment for well cementing - Part 2: Centralizer placement and stop-collar testing Industries du peétrole et du gaz naturel- Equipement de cimentation depuits- Partie 2: Mise en place des centreurs et essai des colliers d'arret Reference number ISO 10427-2:2004(E) @ ISO 2004 ISO 10427-2:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but accepts no liability in this area. Adobe is atrademarkof Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In @ISO2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ISO 2004-All rights reserved ISO 10427-2:2004(E) Contents Page Foreword Introduction 1 Scope 2 Normative references . 3 Terms and definitions 4 Methods for estimating centralizer placement. 4.1 4.2 Standoff ratio calculation .. 4.3 Buoyed weight of casing.... 4.4 Calculations for centralizer spacing 5 Procedure for testing stop collars . 5.1 General.. 9 5.2 Apparatus. 10 5.3 Test procedure 11 5.4 Reporting of test results... Annex A (informative) Documentation of stop-collar test results 12 Bibliography @Is02004-All rights reserved ii ISO 10427-2:2004(E) 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 technical committee has been non-governmental,inliaisonwithIsO,alsotakepartinthework.Isocollaboratescloselywiththe International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 10427-2 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee Sc 3, Drilling and completion fluids, and well cements. This first edition of ISO 10427-2, together with ISO 10427-1 and ISO 10427-3, cancels and replaces ISO10427:1993,whichhasbeentechnicallyrevised. Iso 10427 consists of the following parts, under the general title Petroleum and natural gas industries - Equipmentforwell cementing: Part 1: Casing bow-spring centralizers Part 2: Centralizer placement and stop-collar testing Part3:Performance testing of cementing float equipment iv @ ISO 2004 - All rights reserved ISO 10427-2:2004(E) Introduction This part of ISO 10427 is based on API Specification 10D, 5th edition, January 1995 [1]. In this part of IsO 10427, where practical, U.S. Customary units are included in brackets for information. @IsO2004-All rights reserved V This page is intentionally blank. INTERNATIONALSTANDARD ISO 10427-2:2004(E) Petroleum and natural gas industries Equipment for well cementing Part 2: Centralizer placement and stop-collar testing 1 Scope This part of isO 10427 provides calculations for determining centralizer spacing, based on centralizer performan