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

石油天然气工业套管、油管、钻杆和用作套管或油管的管线管性能公式及计算

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 30, 2022

Implementation date

April 1, 2023

Scope

GB/T 20657-2022 is the English-translated version of 石油天然气工业套管、油管、钻杆和用作套管或油管的管线管性能公式及计算.

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

Its scope clause reads: 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.

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Document preview — GB/T 20657-2022

National Standard of the People's Republic of China

ICS: 75.180.10
Classification: E 92
Replacing: GB/T 20657-2011

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Symbols and abbreviations
4.1 Symbol
4.2 Abbreviations
5 Consistency
5.1 References
5.2 Units of measurement
6 Triaxial stress yield design of pipe body
6.1 Overview
6.2 Assumptions and scope of application
6.3 Calculate the required parameters
6.4 Triaxial stress yield design formula of pipe body
6.5 Linepipe Triaxial Stress Yield Design Formula Using
6.6 Calculation Example
7 Pipe body ductile fracture
7.1 Overview
7.2 Assumptions and scope of application
7.3 Calculate the required parameters
7.4 Design formula for ductile fracture of plugged pipe end
7.5 Modification of ductile fracture design formula under axial tension and external pressure
7.6 Calculation example
8 External pressure crushed
8.1 Overview
8.2 Assumptions and scope of application
8.3 Calculate the required parameters
8.4 Design formula for pipe body collapse pressure
8.5 Empirical coefficients
8.6 Application of collapse pressure formula to line pipe
8.7 Calculation example
9 joint connection strength
9.1 Overview
9.2 API Casing Joint Tensile Connection Strength Design Formula
9.3 Tensile connection strength of API tubing joints
9.4 Line pipe connection strength
10 Coupling anti-internal pressure performance
10.1 Overview
10.2 Yield pressure in couplings of round thread and buttress thread
10.3 Internal pressure leakage strength of couplings with round thread or buttress thread
11 Quality
11.1 Overview
11.2 Nominal mass per unit length
11.3 Mass per unit length of plain-end pipe
11.4 Quality of pipe end processing
11.5 Thread and coupling quality
11.6 Quality of integrally connected tubing with thickened ends and threads
11.7 End thickening mass
11.8 Coupling quality
11.9 Loss of mass in threading
11.10 End thickening mass
12 Elongation
13 Flattening test
13.1 Flattening test of casing and tubing
13.2 Line pipe flattening test
14 Hydrostatic pressure test
14.1 Hydrostatic testing of plain-end pipe and integral joint tubing
14.2 Hydrostatic test pressure for threaded and coupled pipe
15 round thread casing and tubing make-up torque
16 Submerged arc welding line pipe guide bending test
16.1 Overview
16.2 Background
17 Determination of minimum impact test specimen size for API couplings and pipes
17.1 Critical wall thickness
17.2 Wall thickness of semi-finished couplings
17.3 Wall thickness of transverse impact specimen
17.4 Wall thickness of longitudinal impact specimen
17.5 Minimum Specimen Size for API Couplings
17.6 Tube Impact Specimen Dimensions
17.7 Larger size specimens
17.8 References
Appendix A (Informative) Discussion of Triaxial Yield Formula of Pipe
Appendix B (informative) Discussion of the ductile fracture formula
Appendix C (Informative) Internal pressure rupture test procedure

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.

GB/T 21447 | SY/T 5164 | SY/T 5324 | GB/T 20656 | GB/T 20659 | […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 358 pages — is available in the English PDF.

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