石油学报 ›› 2022, Vol. 43 ›› Issue (12): 1798-1812.DOI: 10.7623/syxb202212010

• 石油工程 • 上一篇    下一篇

页岩气井井筒完整性失效力学机理与设计控制技术若干研究进展

高德利1, 刘奎2, 王宴滨1, 刘金海3, 李轩4   

  1. 1. 中国石油大学(北京)石油工程教育部重点实验室 北京 102249;
    2. 中石化石油工程技术研究院有限公司 北京 102200;
    3. 天津钢管制造有限公司 天津 300301;
    4. 中国石油集团川庆钻探工程有限公司页岩气勘探开发项目经理部 四川成都 610000
  • 收稿日期:2022-10-04 修回日期:2022-11-15 出版日期:2022-12-25 发布日期:2023-01-06
  • 通讯作者: 王宴滨,男,1988年2月生,2016年获中国石油大学(北京)油气井工程专业博士学位,现为中国石油大学(北京)石油工程学院教授,主要从事油气井力学与控制工程方面的科研工作。Email:wangyanbin@cup.edu.cn
  • 作者简介:高德利,男,1958年4月生,1990年获石油大学(北京)油气井工程专业博士学位,现为中国科学院院士、中国石油大学(北京)教授,主要从事油气井工程科学研究。Email:gaodeli@cup.edu.cn
  • 基金资助:
    国家自然科学基金重点项目(No.52234002)和国家自然科学基金创新研究群体项目(No.51821092)资助。

Some research advances in the failure mechanism and design & control technologies of shale gas well integrity

Gao Deli1, Liu Kui2, Wang Yanbin1, Liu Jinhai3, Li Xuan4   

  1. 1. MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China;
    2. Sinopec Research Institute of Petroleum Engineering, Beijing 102200, China;
    3. Tianjin Pipe Corporation, Tianjin 300301, China;
    4. Shale Gas Exploration and Development Department, CNPC Chuanqing Drilling Engineering Company Limited, Sichuan Chengdu 610000, China
  • Received:2022-10-04 Revised:2022-11-15 Online:2022-12-25 Published:2023-01-06

摘要: 水平井钻井与体积压裂完井技术,是页岩气田高效开发的关键核心技术内容之一。中国页岩气田开发同样采用了这套技术,但由于页岩储层、压裂作业等主、客观原因,导致页岩气水平井压裂井筒完整性失效问题比较严重,需要深入揭示其失效机理,创新研发页岩气水平井井筒完整性设计控制等新技术。通过阐述页岩气水平井压裂井筒完整性失效机理与设计控制技术的研究进展,重点介绍了井筒完整性领域的相关创新研究工作,主要内容包括:页岩气水平井体积压裂井筒完整性的失效机理、主控因素及控制技术体系,以及页岩气水平井专用高性能套管与复合管柱设计技术等。研究结果表明,通过多年的创新研究与实践,中国已建立了一套比较行之有效的页岩气水平井专用套管与井筒完整性设计控制技术体系,可为页岩气田大规模开发工程提供相适应的井筒完整性安全保障。

关键词: 页岩气工程, 井筒完整性, 失效机理, 设计控制技术, 工程应用

Abstract: The horizontal well drilling and volume fracturing completion technology is key for efficient development of shale gas field. This technology is also applied in the exploitation of shale gas fields in China. However, due to some subjective and objective reasons such as the special geological conditions of shale reservoirs and the complexity of fracturing operation, the problem of well integrity failure is prominent during the fracturing of horizontal wells. Therefore, it is required to discover the internal failure mechanism and develop corresponding design and control technologies for well integrity of shale gas boreholes. This paper emphatically introduces relevant innovation work of the author’s team through elaborating the research progresses in the failure mechanism and the design and control technologies of well integrity of horizontal shale gas boreholes. The main points are as below:the failure mechanism and main control factors of well integrity in volume fracturing of horizontal shale gas boreholes, the technical system of well integrity control, and the design technology of special high-performance casings and graduated strings for horizontal shale gas boreholes. It is concluded that after years of innovative research and practice, China has developed a set of special casings and established an effective technical system of design and control of well integrity for horizontal shale gas boreholes, which can provide safety guarantee for well integrity during the large-scale development of shale gas fields in China.

Key words: shale gas engineering, well integrity, failure mechanism, design and control technology, engineering application

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