复杂泥页岩地层井壁稳定钻井液材料研究现状  

Research Status of Wellbore Stabilization Drilling Fluid Materials in Complex Shale Formations

作　　者：黄贤斌[1,2] 张学皓 袁侦航 张洋 HUANG Xianbin;ZHANG Xuehao;YUAN Zhenhang;ZHANG Yang(State Key Laboratory of Deep Oil and Gas,China University of Petroleum(East China),Qingdao 266580,Shandong,China;College of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China)

机构地区：[1]中国石油大学(华东)深层油气全国重点实验室,山东青岛266580 [2]中国石油大学(华东)石油工程学院,山东青岛266580

出　　处：《新疆石油天然气》2024年第3期46-53,共8页Xinjiang Oil & Gas

基　　金：中央高校基本科研业务费专项资金资助(24CX02003A);国家自然科学基金基础科学中心项目“超深特深层油气钻采流动调控”(52288101)。

摘　　要：针对复杂泥页岩地层钻井过程中频繁出现的井壁失稳问题,目前国内外已形成了用于稳定井壁的钻井液技术,包括泥页岩水化抑制技术、地层孔隙封堵技术和化学固壁技术。但以上多种技术均无法抑制泥页岩的表面水化作用,高温条件下快速封堵和化学固壁剂的效果也相当有限,因此井壁失稳问题仍难以解决。系统总结了复杂泥页岩地层井壁稳定钻井液材料的研究工作,通过对井壁稳定钻井液材料研究现状进行分析,阐述了不同钻井液材料包括泥页岩水化抑制剂、封堵剂、化学固壁剂的作用机理,探讨了不同种类井壁稳定材料的优势和缺陷。据此指出开展泥页岩水化基础理论研究、开发高温高盐条件下稳定有效的新型纳米材料、建立能够模拟井下条件的化学固壁剂的评价方法将成为未来复杂泥页岩地层井壁稳定钻井液材料和技术研究的热点和难点。最后对复杂泥页岩地层井壁稳定钻井液技术和材料的发展方向进行了展望。In response to the frequent wellbore instability issues encountered during drilling operations in complex shale formations,the drilling fluid technologies aimed at wellbore stabilization have been developed at home and abroad.These include shale hydration inhibition,formation pore plugging,and chemical wall strengthening techniques.Despite these advancements,existing methods have limitations in curbing the surface hydration of shale,and the effect of rapid plugging and wall strengthening agent is considerably re-duced under high temperature conditions,making it challenging to address wellbore instability.This paper offers a comprehensive re-view of the research work on drilling fluid materials for wellbore stability in complex shale formations.By analyzing the current state of research,it elucidates the mechanism of various drilling fluid materials,including shale hydration inhibitors,plugging agents,and chemical wall strengthening agents.It also discusses the strengths and limitations of different types of wellbore stabilization materials.This paper highlights the need for fundamental theoretical research into shale hydration,the development of novel nanomaterials that are stable and effective under high temperature and high salinity conditions,and the establishment of evaluation methods for chemical wall strengthening agents that can simulate downhole conditions.These areas are identified as key focal points and challenges for future research in the field of drilling fluid materials and technologies for wellbore stabilization in complex shale formations.This paper con-cludes with an outlook on the future development directions for these technologies and materials.

关 键 词：泥页岩 井壁失稳 钻井液 页岩抑制剂 封堵剂 固壁剂 

分 类 号：TE254[石油与天然气工程—油气井工程]