石油学报 ›› 2021, Vol. 42 ›› Issue (10): 1382-1394.DOI: 10.7623/syxb202110012

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高分子材料的力学状态转变机理及在钻井液领域的应用展望

孙金声1,2, 雷少飞1, 白英睿1, 吕开河1, 张曙沛1, 韩金良1, 程荣超2, 刘凡2   

  1. 1. 中国石油大学(华东)石油工程学院 山东青岛 266580;
    2. 中国石油集团工程技术研究院有限公司 北京 102206
  • 收稿日期:2021-04-20 修回日期:2021-08-02 出版日期:2021-10-25 发布日期:2021-11-03
  • 作者简介:孙金声,男,1965年1月生,1985年获江西师范大学学士学位,2006年获西南石油大学博士学位,现为中国工程院院士、中国石油大学(华东)博士生导师,主要从事钻井液、防漏堵漏、井壁稳定、储层保护、水合物钻采等领域的理论与技术研究工作。Email:sunjsdri@cnpc.com.cn
  • 基金资助:
    国家自然科学基金重大项目(No.51991361)、国家自然科学基金面上项目(No.52074327)和中国石油天然气集团有限公司重大工程技术现场试验项目(2020F-45)资助。

Mechanical transformation mechanism of polymer materials and its application prospects in the field of drilling fluids

Sun Jinsheng1,2, Lei Shaofei1, Bai Yingrui1, Lü Kaihe1, Zhang Shupei1, Han Jinliang1, Cheng Rongchao2, Liu Fan2   

  1. 1. School of Petroleum Engineering, China University of Petroleum, Shandong Qingdao 266580, China;
    2. CNPC Engineering Technology R&D Company Limited, Beijing 102206, China
  • Received:2021-04-20 Revised:2021-08-02 Online:2021-10-25 Published:2021-11-03

摘要: 通过系统论述高分子材料在不同条件下的力学状态转变机理,并对其在钻井液封堵、防漏堵漏、固壁和降滤失领域的研究进展和应用进行了梳理,分析了其在钻井液领域应用中存在的问题,进一步展望了其在封堵、防漏堵漏、固壁和降滤失领域的应用前景。高分子材料作为封堵剂,可通过链纠缠、范德华力和氢键等作用,有效封堵地层微小孔隙;作为随钻防漏/堵漏剂,可通过机械互锁或化学键结合等作用黏连架桥,形成高强度胶结封堵层;作为固壁剂,可通过高分子链扩散、纠缠、静电和氢键等作用吸附聚集于井壁和微裂缝,维持井壁稳定;作为降滤失剂,可与黏土、聚合物协同作用,在井壁形成一层致密的高强度滤饼,降低钻井液滤失量。高分子材料在钻井液领域的研究将进一步促进钻井液处理剂技术的飞速发展。

关键词: 高分子材料, 力学状态转变机理, 封堵, 防漏堵漏, 固壁, 降滤失, 应用展望

Abstract: This paper systematically discusses the mechanical transformation mechanism of polymer materials under different conditions, summarizes the research progresses and applications in the fields such as plugging of drilling fluid, lost circulation prevention and control, wellbore strengthening and fluid loss control, analyzes the problems existing in the application of drilling fluids, and further looks forward to its application prospects in the fields of plugging, lost circulation prevention and control, wellbore strengthening and fluid loss control. As a plugging agent, polymer material can effectively block the tiny pores of reservoir formations through chain entanglement, Van Der Waals force and hydrogen bonds. As a loss prevention material while drilling/lost circulation material, it can be bonded and bridged through mechanical interlocking or chemical bonding to form a high-strength cemented plugging zone. As a wellbore strengthener, it can be adsorbed on the borehole wall and micro-cracks through polymer chain diffusion, chain entanglement, static electricity, and hydrogen bond, so as to maintain the stability of the borehole wall. As a filtrate reducer, it can cooperate with clay and polymer to form a dense high-strength filter cake on the well sidewall and reduce the fluid loss of drilling fluid. The research of polymer materials in the field of drilling fluid will further promote the rapid development of drilling fluid additive technology.

Key words: polymer materials, mechanical transformation mechanism, plugging, lost circulation prevention and control, wellbore strengthening, fluid loss control, application prospects

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