GB/T 20657-2022 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20657-2022	RFQ	ASK	3 days	Petroleum and natural gas industries - Formulae and calculations for the properties of casing, tubing, drill pipe and line pipe used as casing or tubing	Valid
GB/T 20657-2011	RFQ	ASK	16 days	Petroleum and natural gas industries -- Equations and calculations for the properties of casing, tubing, drill pipe and line pipe used as casing and tubing	Obsolete
GB/T 20657-2006	RFQ	ASK	9 days	Petroleum and natural gas industries -- Formulae and calculation for casing, tubing, drill pipe and line pipe properties	Obsolete

Similar standards

GB/T 21447   SY/T 5164   SY/T 5324   GB/T 20656   GB/T 20659   

Basic data

Standard ID: GB/T 20657-2022 (GB/T20657-2022)
Description (Translated English): Petroleum and natural gas industries - Formulae and calculations for the properties of casing, tubing, drill pipe and line pipe used as casing or tubing
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: E92
Classification of International Standard: 75.180.10
Word Count Estimation: 372,398
Date of Issue: 2022-12-30
Date of Implementation: 2023-04-01
Older Standard (superseded by this standard): GB/T 20657-2011
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 20657-2022: Petroleum and natural gas industries - Formulae and calculations for the properties of casing, tubing, drill pipe and line pipe used as casing or tubing

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 75.180.10 CCSE92 National Standards of People's Republic of China Replacing GB/T 20657-2011 Oil and gas industry casing, tubing, Drill pipe and pipes used as casing or tubing Line pipe performance formula and calculation (ISO /T R10400.2018, MOD) Released on 2022-12-30 and implemented on 2023-04-01 State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface V 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Symbols and abbreviations4 4.1 Symbol 4 4.2 Abbreviations 10 5 Consistency 11 5.1 References 11 5.2 Units of measurement 11 6 Triaxial stress yield design of pipe body 11 6.1 Overview 11 6.2 Assumptions and scope of application 11 6.3 Calculate the required parameters 12 6.4 Triaxial stress yield design formula of pipe body 12 6.5 Linepipe Triaxial Stress Yield Design Formula Using 12 6.6 Calculation Example 12 7 Pipe body ductile fracture 15 7.1 Overview 15 7.2 Assumptions and scope of application 15 7.3 Calculate the required parameters 16 7.4 Design formula for ductile fracture of plugged pipe end 17 7.5 Modification of ductile fracture design formula under axial tension and external pressure 17 7.6 Calculation example 20 8 External pressure crushed 22 8.1 Overview 22 8.2 Assumptions and scope of application 22 8.3 Calculate the required parameters 22 8.4 Design formula for pipe body collapse pressure 22 8.5 Empirical coefficients 27 8.6 Application of collapse pressure formula to line pipe 28 8.7 Calculation example 28 9 joint connection strength 29 9.1 Overview 29 9.2 API Casing Joint Tensile Connection Strength Design Formula 29 9.3 Tensile connection strength of API tubing joints 31 9.4 Line pipe connection strength 32 10 Coupling anti-internal pressure performance 32 10.1 Overview 32 10.2 Yield pressure in couplings of round thread and buttress thread 32 10.3 Internal pressure leakage strength of couplings with round thread or buttress thread 32 11 Quality 33 11.1 Overview 33 11.2 Nominal mass per unit length 33 11.3 Mass per unit length of plain-end pipe 33 11.4 Quality of pipe end processing 34 11.5 Thread and coupling quality 34 11.6 Quality of integrally connected tubing with thickened ends and threads 34 11.7 End thickening mass 35 11.8 Coupling quality 35 11.9 Loss of mass in threading 38 11.10 End thickening mass 40 12 Elongation 42 13 Flattening test 42 13.1 Flattening test of casing and tubing 42 13.2 Line pipe flattening test 42 14 Hydrostatic pressure test 43 14.1 Hydrostatic testing of plain-end pipe and integral joint tubing 43 14.2 Hydrostatic test pressure for threaded and coupled pipe 44 15 round thread casing and tubing make-up torque 45 16 Submerged arc welding line pipe guide bending test 45 16.1 Overview 45 16.2 Background 47 17 Determination of minimum impact test specimen size for API couplings and pipes 47 17.1 Critical wall thickness 47 17.2 Wall thickness of semi-finished couplings 49 17.3 Wall thickness of transverse impact specimen 51 17.4 Wall thickness of longitudinal impact specimen 52 17.5 Minimum Specimen Size for API Couplings 54 17.6 Tube Impact Specimen Dimensions 55 17.7 Larger size specimens 55 17.8 References 55 Appendix A (Informative) Discussion of Triaxial Yield Formula of Pipe 56 A.1 Triaxial yielding of pipe body 56 A.2 Yield in the pipe body, Lamé formula 61 when the external pressure, bending moment and torque are zero Appendix B (informative) Discussion of the ductile fracture formula 64 B.1 Overview 64 B.2 Ductile fracture of pipe body 64 B.3 Choice of ductile fracture model 69 B.4 Pipe fracture data for assessment of fracture model plausibility 71 B.5 Comparison between different fracture models and pipe fracture data under plugged pipe end conditions 71 B.6 Comparison of recommended rupture model and pipe rupture data under plugged pipe end conditions 73 B.7 Effect of imperfections in the ductile fracture formula 78 B.8 Reliability calculation template for ductile fracture strength 83 Appendix C (Informative) Internal pressure rupture test procedure 93 C.1 Specimen ends 93 C.2 Minimum length of the test piece 93 C.3 Pressure loading 94 Appendix D (Informative) Discussion of Fracture Formulas 95 D.1 Tube rupture due to material strength 95 D.2 Crack Growth Models 95 D.3 Failure due to environmental crack initiation 98 Appendix E (Informative) Discussion of Historical Collapse Formula Development 100 E.1 Collapse pressure formula 100 E.2 Source of collapse pressure formula 106 Appendix F (Informative) Collapse Strength Reliability Research Development 111 F.1 Overview 111 F.2 Selection of ultimate collapse strength formula 115 F.3 Input variables 119 F.4 Choice of formula 131 F.5 Risk assessment for crush strength 134 F.6 Summary 143 Appendix G (informative) Calculation of design value of anti-collapse strength from external pressure collapse test data 147 G.1 Overview 147 G.2 Collapse test data 147 G.3 Large batches of data samples 147 G.4 Mini-batch data samples 147 Appendix H (informative) Determine the collapse strength according to the product data 150 H.1 Overview 150 H.2 Product quality data 150 H.3 Reliability analysis 151 H.4 Calculation example 155 Appendix I (Informative) External Pressure Collapse Test Procedure 163 I.1 Overview 163 I.2 Specimen preparation 163 I.3 Test equipment 163 I.4 Measurements before external pressure collapse test 164 I.5 Test procedure 166 I.6 Data reporting 166 Appendix J (Informative) Discussion of Joint Strength Formula 168 J.1 Overview 168 J.2 API Casing Joint Tensile Connection Strength Design Formula 168 Appendix K (Informative) SI Calculation Performance List 172 Appendix L (Informative) List of Calculation Properties in US Customary Units 265 References 358

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. This document replaces GB/T 20657-2011 "Casing, tubing, drill pipe and line pipe used as casing or tubing for the oil and gas industry Performance Formulas and Calculations". Compared with GB/T 20657-2011, this document has major technical changes except structural adjustment and editorial changes as follows. a) Changed the definition of effective axial force (see 3.7, 4.7 of the.2011 edition); b) Terminology and definitions such as principal stress, number of threads per inch, yield stress deviation, etc. are deleted (see 4.19, 4.23, 4.26 of the.2011 edition); c) Added abbreviations (see 4.2); d) The yield design formula of thin-walled pipes under only internal pressure and no axial load has been changed (see 6.6.2, 6.6.2 of the.2011 edition); e) Delete the M65 steel grade requirements and its data (see 7.3.2, 15, B.2.3.3, B.3.2, F.5.4, F.6.3, K.2, L.2); f) Delete the effect of internal pressure on collapse (see 8.4.7 of the.2011 edition); g) Added the collapse pressure formula under the combined action of axial stress and internal pressure (see 8.4.7); h) Deleted all the content related to the direct-connection bushing (see 9.2.4, 11.9.4, 11.10.5, J.2.4 of the.2011 edition); i) The calculation formula for the slippage strength of the oil pipe joint without thickening used for calculating the make-up torque is added (see 9.3.2); j) Added the calculation formula for the slippage strength of the thickened oil pipe joint used to calculate the make-up torque (see 9.3.3); k) Changed the critical wall thickness of couplings of some specifications (see 17.1, 17.1 of the.2011 edition); l) The calculated wall thickness of semi-finished couplings of some specifications has been changed (see 17.2, 17.2 of the.2011 edition); m) The wall thickness required for machining transverse Charpy impact specimens for couplings of some specifications has been changed (see 17.3, 17.3 of the.2011 edition); n) The wall thickness required for processing longitudinal Charpy impact specimens for couplings of some specifications has been changed (see 17.4, 17.4 of the.2011 edition); o) The minimum size of the transverse impact test specimen for couplings of some specifications has been changed (see 17.5, 17.2 of the.2011 edition). This document is modified to adopt ISO /T R10400.2018 "Casing, tubing, drill pipe and pipes used as casing or tubing for the oil and gas industry Line Pipe Performance Formula and Calculation". Compared with ISO /T R10400.2018, this document has made the following structural adjustments. ---4.1 corresponds to Chapter 4 in ISO /T R10400.2018, adding 4.2; ---Move Chapters 9 to 11 and the explanations of some symbols in the formulas and figures in the appendix to 4.1, and move the abbreviations in 9.1 to to 4.2; --- Change A.1.3.3.1.1~A.1.3.3.1.4 to A.1.3.3.2~A.1.3.3.5, A.1.3.3.2 to A.1.3.3.6; --- Move the content of K.2 in Appendix K and L.2 in Appendix L to the corresponding table, and delete the chapter numbers of K.1, K.2, L.1, and L.2 and title. The technical differences between this document and ISO /T R10400.2018 and their reasons are as follows. --- Deleted some symbols, these symbols are not used in the standard text (see Chapter 4); --- Added symbols and abbreviations such as fht, fycom, CRS, CVN, FAD, etc., explained the symbols in the added formula, supplemented Filled with commonly used abbreviations (see Chapter 4); --- Added the calculation formula of collapse pressure under the composite action of axial stress and internal pressure (see 8.4.7) to clarify the collapse pressure under composite load The force calculation method enhances the operability of the standard; --- An example of calculation of external pressure collapse pressure (see 8.7) has been added to help users of this document understand the formula; --- In combination with ISO 11960.2020, the critical wall thickness of API threaded couplings (see 17.1) has been changed to be consistent with relevant standards. The following editorial changes were made to this document. --- Supplement the L809Cr data (see 11.1, Table F.8 and Table F.9), and improve the existing steel grade data; ---Deleted the introduction of some limitations background information (see F.1.1); --- Adjusted some table numbers (see Table H.11 and Table H.12 in H.4.2); --- Adjust the content of K.2 and L.2 to the corresponding table (see Table K.1~Table K.5 and Table L.1~Table L.5). Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Petroleum and Natural Gas Standardization Technical Committee (SAC/TC355). This document is drafted by. China Petroleum Engineering Materials Research Institute Co., Ltd., China National Petroleum Corporation Xinjiang Oilfield Branches, Daqing Oilfield Co., Ltd., National Petroleum Pipeline Network Group Co., Ltd. West-East Gas Transmission Branch, PetroChina Co., Ltd. Dagang Oilfield Branch, Baoji Petroleum Steel Pipe Co., Ltd., China National Petroleum Corporation Changqing Oilfield Branch Company, Xi'an Sanhuan Petroleum Pipe Technology Co., Ltd., Beijing Longsheng Taike Oil Pipe Technology Co., Ltd., China National Petroleum Corporation Jidong Oilfield Branch of the company. The main drafters of this document. Wang Jianjun, Xu Ting, Shen Zhaoxi, Fang Wei, Yang Shangyu, Li Fangpo, Sun Jianhua, Xue Chengwen, He Haijun, Lu Hua, Cai Meng, Lu Caihong, Li Lifeng, Chi Ming, Liu He, Gao Xia, Zhang Kuangsheng, Wu Gang, Zhao Nan, Qiu Yiwang, Zhu Lixia, Lou Qi. This document was first released in.2006, revised for the first time in.2011, and this is the second revision. Oil and gas industry casing, tubing, Drill pipe and pipes used as casing or tubing Line pipe performance formula and calculation

1 Scope

This document gives the necessary calculation formulas and templates for various pipe properties, including. ---Pipe properties, such as tensile strength, internal pressure resistance and external extrusion strength; ---Minimum physical index; --- Make-up torque; ---Product test pressure; --- Product critical dimensions related to test and inspection standards; --- The critical size of the test equipment; --- Specimen critical size. For the calculation formula of pipe performance, a large amount of background information related to its development and use is provided, see Appendix A~Appendix J for details. This document applies to ISO 11960 or APISpec5CT, ISO 11961 or APISpec5D, ISO 3183 or APISpec 5L produced tubes. With caution, the formulas and templates in this document can be used for other pipes. Tubes that have had cold work during their manufacture (such as cold straightened pipe) are also included in the scope of this document. This document does not apply to pipes that are cold-worked after the finished pipe, such as expanded pipes and connected pipes. Refill hose. The use of the performance calculation formulas in this document for linepipe and other pipe is limited to the use of these pipes as casing/tubing or laboratory use. It is necessary to carefully correspond to the closest casing/tubing product for its heat treatment process, straightening process and yield strength. These formulas are used for The same care must be taken when calculating drill pipe performance. By entering the manufacturing parameters of the pipe, this document and the formulas contained in it can calculate the ISO 11960 or APISpec5CT, The expected performance of pipes in ISO 11961 or APISpec5D, ISO 3183 or APISpec5L. The calculation result of the formula in this document cannot be understood Guarantee for the production process. Manufacturers produce petroleum tubing according to production specifications that include product dimensions and physical and chemical properties. This document is designed The formulas provide a reference for users to describe tubing performance and well design or tubing characterization studies. This document is not a design specification, it only provides formulas and templates for the performance calculation of pipes used in downholes. This document does not provide any Guidance regarding the loads the pipe may experience or the safety margins required for an acceptable design. User determines appropriate design loads and selection Sufficient safety factor for safe and efficient design. Design loads and safety factors can be based on historical experience, local code requirements and specific Well condition selection OK. All formulas and pipe performance data listed in this document (see Appendix K and Appendix L) assume a benign environment and material properties are satisfactory. Meet the requirements of ISO 11960 or APISpec5CT, ISO 11961 or APISpec5D, ISO 3183 or APISpec5L. other environment Additional analyzes may be required, as listed in Appendix D. This document does not cover the seal strength of pipe joints and pipe performance under dynamic loads. All tensile stresses in this document are positive values.

2 Normative references

This document has no normative references. ......

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