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GB/T 45966.1-2025: Petroleum and natural gas industries - Well integrity - Part 1: Life cycle governance
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GB/T 45966.1-2025: Petroleum and natural gas industries - Well integrity - Part 1: Life cycle governance

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ICS 75.180.10 CCSE92 National Standard of the People's Republic of China Well integrity in the oil and gas industry Part 1.Lifecycle Management Part 1.Lifecycle governance Implementation on February 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Abbreviations 3 5 Well Integrity Strategy and Management System 4 5.1 General Principles 4 5.2 Well Integrity Strategy 4 5.3 Well Integrity Management System (WIMS) 4 6 Well Integrity Design Basics 8 6.1 Basic Information 8 6.2 Documentation Requirements 8 6.3 Other factors 9 7 Well Design Phase 9 7.1 Well Integrity Work Content 9 7.2 Well Design Risk Management 9 7.3 Well Barrier Design 11 7.4 Well Operation Scope 12 7.5 Emergency Plan 12 7.6 Monitoring requirements for WBE 12 7.7 Handover Documentation 12 8 Well Construction Stage 13 8.1 Well Integrity Work Content 13 8.2 Well Barrier Schematic Diagram 13 8.3 Well Barrier Verification 13 8.4 Risk identification and assessment 14 8.5 MOC 14 8.6 Handover Documentation 15 8.7 Continuous Improvement 15 9 Production Stage 15 9.1 Well Integrity Work Content 15 9.2 Well Barrier Performance Requirements 15 9.3 Monitoring and surveillance 16 9.4 Annular Pressure Management 17 9.5 Well Maintenance 18 9.6 Well Integrity Evaluation 19 9.7 Reports and Documents 19 9.8 Continuous Improvement 19 10 Well Workover Phase 20 10.1 Well Integrity Work Content 20 10.2 Well Handover 20 10.3 Well Workover Plan 20 10.4 Well Barrier 20 10.5 Risk Management 21 10.6 MOC 21 10.7 Handover Documentation 21 11 Well abandonment stage 21 11.1 Well Abandonment Plan 21 11.2 Abandoned Well Barrier 21 11.3 MOC 22 11.4 Reports and Documents 22 Appendix A (Informative) Schematic diagram of well integrity and well barriers during the well life cycle 23 Appendix B (Informative) Examples of Performance Standards for Well Barrier Components 37 Appendix C (Informative) Well Handover Document Example 39 Appendix D (Informative) Pressure Profile Prediction Diagram 41 Appendix E (Informative) Example of Risk Factor Identification Checklist 42 Appendix F (Informative) Typical Leakage Path Schematic 43 Appendix G (Informative) MAASP Calculation 44 G.1 Overview 44 G.2 Calculation of MAASP value of A-annulus 45 G.3 Calculation of MAASP value of annulus B 47 Appendix H (Informative) Well Integrity Classification and Management Principles 50 Reference 51 Preface 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 is Part 1 of GB/T 45966 "Well Integrity in the Petroleum and Natural Gas Industry". GB/T 45966 has been published as follows part. --- Part 1.Lifecycle management. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed and coordinated by the National Technical Committee for Standardization of Petroleum Drilling Equipment and Tools (SAC/TC96). This document was drafted by. China National Petroleum Corporation Engineering Materials Research Institute Co., Ltd., China National Petroleum Corporation Oil and Gas and New Energy Branch, China National Petroleum Corporation Tarim Oilfield Branch, China National Petroleum Corporation Southwest Oil and Gas Tian Branch, China National Petroleum Corporation Exploration and Development Research Institute, China National Petroleum Corporation Engineering Technology Research Institute Co., Ltd., Daqing Oilfield Co., Ltd., China National Petroleum Corporation Changqing Oilfield Branch, China National Petroleum Corporation Sichuan Qing Drilling Engineering Co., Ltd. Co., Ltd., China National Petroleum Corporation Bohai Oilfield Equipment Manufacturing Co., Ltd., Sinopec Shengli Oilfield Branch, China Petroleum Research Institute Co., Ltd., Beijing Beiweitong Energy Technology Group Co., Ltd., and Tianjin Dongfang Xianke Petroleum Machinery Co., Ltd. The main drafters of this document are. Qiu Jinping, Wang Peng, Zeng Nu, Wang Chuanlei, Ma Yingwen, Cao Yanfeng, Yu Shaoqing, Qiao Yu, Gao Xiang, Xie Junfeng, Luo Wei, Feng Shaobo, Wang Xueqiang, Yang Xiangtong, He Yingming, Jia Deli, Xu Ting, Zhang Kai, Cai Meng, Ma Wenhai, Zhang Ping, Liu Ziping, Ji Nan, Zhao Yonggang, Ji Haitao, Zhang Xiaogang, Dai Rongdong, Liang Tao, and Li Jingxin.

introduction

GB/T 45966 "Well Integrity in the Petroleum and Natural Gas Industry" aims to propose the integrity of oil and gas wells from design, construction, production, workover, and abandonment throughout their life cycle. The basic requirements and recommended practices for well integrity management at each stage of the cycle will help improve the overall level of well integrity management. constitute. --- Part 1.Lifecycle management; --- Part 2.Well integrity management during the production phase. This document is Part 1 of GB/T 45966 and is used in conjunction with other parts. This document is intended to guide my country's oil and gas industry throughout the life cycle of a well, including the design foundation phase, design phase, well construction phase, and The document is written to effectively manage well integrity during the production, workover and abandonment phases. It proposes the minimum requirements for ensuring well integrity management. requirements, technical recommendations tailored to the specific risk characteristics of the well, ensuring integrity management during well design, construction, and the remaining life of the well. Well integrity in the oil and gas industry Part 1.Lifecycle Management

1 Scope

This document specifies the basic requirements and recommended practices for well integrity management throughout the life cycle of oil and gas wells in the petroleum and natural gas industry, including well integrity management. Safety strategy and management system, well integrity design basis, well design stage, well construction stage, production stage, well workover stage, and well abandonment stage. This document applies to the integrity management of high-risk wells in the oil and gas industry. This document is not applicable to well control management in the oil and gas industry, nor is it applicable to open hole wellbore integrity management. Note 1.A high-risk well is a well that meets any two or more of the following conditions simultaneously. a) The reservoir pore fluid pressure is not less than 70 MPa; b) The reservoir temperature is not less than 150°C; c) The H2S content in the reservoir is not less than 30g/m3; d) The gas production predicted by oil testing or the gas production allocated for production is greater than 20×104m3/d; e) Wells with water depth exceeding 500m. Note 2.Open hole wall integrity refers to the ability of the open hole to maintain its shape and integrity after drilling and completion, also known as "borehole stability".

2 Normative references

This document has no normative references.

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Well integrity Comprehensively apply technical, operational and organizational management solutions to reduce the risk of uncontrolled leakage of formation fluids throughout the life cycle of oil and gas wells. risk. 3.2 failure Loss of ability to perform required tasks. 3.3 fault An abnormal or undesirable condition of a system component due to the presence of improper commands, lack of appropriate commands, or failure. Note 1.Any failure will result in a malfunction; not all malfunctions are caused by a failure. NOTE 2 System components may include entire subsystems, assemblies or parts. 3.4 functionality The operational requirements placed on systems, structures, and equipment to establish and maintain integrity. ...