_RP_7G-1998_2015.pdf

Recommended Practice for Drill Stem Design and Operating LimitsAPI RECOMMENDED PRACTICE 7GSIXTEENTH EDITION,AUGUST 1998EFFECTIVE DATE:DECEMBER 1,1998ERRATA,MAY 2000ADDENDUM 1,APRIL 2009ADDENDUM 2,SEPTEMBER 2009REAFFIRMED,MAY 2015 Recommended Practice for Drill Stem Design and Operating LimitsUpstream SegmentAPI RECOMMENDED PRACTICE 7GSIXTEENTH EDITION,AUGUST 1998EFFECTIVE DATE:DECEMBER 1,1998ERRATA,MAY 2000ADDENDUM 1,NOVEMBER 2003ADDENDUM 2,SEPTEMBER 2009REAFFIRMED,MAY 2015 SPECIAL NOTES API publications necessarily address problems of a general nature.With respect to partic-ular circumstances,local,state,and federal laws and regulations should be reviewed.API is not undertaking to meet the duties of employers,manufacturers,or suppliers towarn and properly train and equip their employees,and others exposed,concerning healthand safety risks and precautions,nor undertaking their obligations under local,state,or fed-eral laws.Information concerning safety and health risks and proper precautions with respect to par-ticular materials and conditions should be obtained from the employer,the manufacturer orsupplier of that material,or the material safety data sheet.Nothing contained in any API publication is to be construed as granting any right,byimplication or otherwise,for the manufacture,sale,or use of any method,apparatus,or prod-uct covered by letters patent.Neither should anything contained in the publication be con-strued as insuring anyone against liability for infringement of letters patent.Generally,API standards are reviewed and revised,reafrmed,or withdrawn at least everyve years.Sometimes a one-time extension of up to two years will be added to this reviewcycle.This publication will no longer be in effect ve years after its publication date as anoperative API standard or,where an extension has been granted,upon republication.Statusof the publication can be ascertained from the API Exploration and Production Departmenttelephone(202)682-8000.A catalog of API publications and materials is published annu-ally and updated quarterly by API,1220 L Street,N.W.,Washington,D.C.20005.This document was produced under API standardization procedures that ensure appropri-ate notication and participation in the developmental process and is designated as an APIstandard.Questions concerning the interpretation of the content of this standard or com-ments and questions concerning the procedures under which this standard was developedshould be directed in writing to the director of the Exploration and Production Department,American Petroleum Institute,1220 L Street,N.W.,Washington,D.C.20005.Requests forpermission to reproduce or translate all or any part of the material published herein shouldalso be addressed to the director.API standards are published to facilitate the broad availability of proven,sound engineer-ing and operating practices.These standards are not intended to obviate the need for apply-ing sound engineering judgment regarding when and where these standards should beutilized.The formulation and publication of API standards is not intended in any way toinhibit anyone from using any other practices.Any manufacturer marking equipment or materials in conformance with the markingrequirements of an API standard is solely responsible for complying with all the applicablerequirements of that standard.API does not represent,warrant,or guarantee that such prod-ucts do in fact conform to the applicable API standard.All rights reserved.No part of this work may be reproduced,stored in a retrieval system,or transmitted by any means,electronic,mechanical,photocopying,recording,or otherwise,without prior written permission from the publisher.Contact the Publisher,API Publishing Services,1220 L Street,N.W.,Washington,D.C.20005.Copyright 1998,2000,2003 American Petroleum Institute FOREWORD This recommended practice is under the jurisdiction of the API Subcommittee on Stan-dardization of Drilling and Servicing Equipment.The purpose of this recommended practice is to standardize techniques for the procedureof drill stem design and to dene the operating limits of the drill stem.API publications may be used by anyone desiring to do so.Every effort has been made bythe Institute to assure the accuracy and reliability of the data contained in them;however,theInstitute makes no representation,warranty,or guarantee in connection with this publicationand hereby expressly disclaims any liability or responsibility for loss or damage resultingfrom its use or for the violation of any federal,state,or municipal regulation with which thispublication may conict.Changes from the previous edition are denoted with bars in the margins.The bars indicatenew content or major editorial changes.Changes to section numbers due to reformatting orminor editorial changes are not denoted with bars.Suggested revisions are invited and should be submitted to the director of the Explorationand Production Department,American Petroleum Institute,1220 L Street,