抗高温防塌水基钻井液体系研发与现场应用  

Development and Application of High Temperature Resistance and Anti-Sloughing Water-Based Drilling Fluid System

作　　者：王晓军 平善海 付云博 李迎 张建辉[3] 戴运才 WANG Xiaojun;PING Shanhai;FU Yunbo;LI Ying;ZHANG Jianhui;DAI Yuncai(Engineering Technology Research Institute,CNPC Great Wall Drilling Company,Panjin,Liaoning,124010,China;Eastern Business Department,CNPC Great Wall Drilling Company,Panjin,Liaoning,124010,China;Lengjia Oilfield Development Company,PetroChina Liaohe Oilfield Company,Panjin,Liaoning,124010,China;Huanxiling Oil Production Plant,PetroChina Liaohe Oilfield Company,Panjin,Liaoning,124114,China)

机构地区：[1]中国石油集团长城钻探工程有限公司工程技术研究院,辽宁盘锦124010 [2]中国石油集团长城钻探工程有限公司东部事业部,辽宁盘锦124010 [3]中国石油辽河油田分公司冷家油田开发公司,辽宁盘锦124010 [4]中国石油辽河油田分公司欢喜岭采油厂,辽宁盘锦124114

出　　处：《石油钻探技术》2025年第2期62-68,共7页Petroleum Drilling Techniques

基　　金：国家科技重大专项“深井超深井优质钻井液与固井完井技术研究”(编号:2016ZX05020-004);中国石油天然气集团公司科学研究与技术开发项目“深井与水平井提速提效技术集成与示范”(编号:2018E-2108)联合资助。

摘　　要：为解决常规水基钻井液的防塌性能和抗温性能难以满足复杂深井勘探开发需要的问题,研制了表面水化抑制剂和纳米封堵剂,并通过其他处理剂优选和配比优化,形成了密度达2.00 kg/L的抗高温防塌水基钻井液体系。室内性能评价表明,该钻井液体系抗温达220℃,静置96 h后上、下部密度差仅0.02 kg/L,抗岩屑污染3.0%以上,抗氯化钙污染0.6%以上,润滑性能和抑制性能稍差于油基钻井液,致密砂岩封堵率达到了85.6%。现场应用效果表明,该钻井液体系在高温深井中仍然保持良好的井眼净化能力,沉降稳定性好,井壁稳定性突出,润滑减阻性能优异。抗高温防塌水基钻井液体系为复杂地层深井超深井钻完井施工提供了技术保障。The anti-sloughing and high temperature-resistant properties of conventional water-based drilling fluids fail to meet the needs of exploration and development of complicated deep wells.To address this issue,surface hydration inhibitors and nano-scale plugging agents were developed.Through the optimization of other treatment agents and ratio optimization,a high temperature-resistant and anti-sloughing water-based drilling fluid system with a density of 2.00 kg/L was formed.The laboratory performance evaluation shows that the temperature resistance of the drilling fluid system reached 220℃;the density difference between the upper and lower parts is only 0.02 kg/L after standing for 96 h;the resistance to cutting contaminant is more than 3.0%,and the resistance to calcium chloride pollution is more than 0.6%.Lubrication and inhibition properties are only inferior to oil-based drilling fluid,and the plugging rate of tight sandstone is 85.6%.Field application results show that the drilling fluid system still maintains great borehole purification capacity in high-temperature deep wells,excellent settlement stability,outstanding wellbore stability,and favorable lubrication drag reduction performance.The high temperature-resistant and anti-sloughing water-based drilling fluid system provides technical support for the drilling and completion of deep and ultra-deep wells in complex formations.

关 键 词：水基钻井液 抗高温 防塌 纳米封堵剂 表面水化抑制剂 封堵率 

分 类 号：TE254.6[石油与天然气工程—油气井工程]