川西深井钻井液技术难点分析及对策  

Analysis and measure of technological difficulty of deep-well drilling fluid in West Sichuan

作　　者：石秉忠[1,2] 欧彪[3] 徐江[2] 李丽[3] 滕春鸣[2] 

机构地区：[1]中国地质大学(北京)工程技术学院,北京100083 [2]中国石化石油工程技术研究院,北京100101 [3]中国石化西南分公司工程技术研究院,四川德阳618000

出　　处：《断块油气田》2011年第6期799-802,共4页Fault-Block Oil & Gas Field

基　　金：中国石化重点科技攻关项目"川西深层复杂地层井筒强化技术研究"(P10037)资助

摘　　要：复杂的地质情况一直制约着川西坳陷深层天然气藏的勘探开发进程。通过分析目前川西深井钻井过程中存在的主要工程地质问题,以及由此产生的一系列钻井液技术难题,如井壁失稳、井漏、井涌和卡钻等井下复杂情况和事故,提出了优化控制高温高密度钻井液流变性、稳定井壁等有针对性的钻井液预防和处理技术对策,可用于指导钻井设计与现场施工,有效降低复杂事故发生率,实现优质、安全、高效和低成本钻井,加快油气勘探步伐的目的。The complicated geological conditions have been restricting the exploration and development of deep natural gas in West Sichuan Depression. Through analyzing the main geological problems in the drilling process of the area and the difficulty and characteristics of drilling fluid technology, such as wellbore instability, lost circulation, well kick and drill pipe sticking, we put forward the technical measures for the optimization of rheological behavior of drilling fluid with high temperature and high pressure and borehole stability. They can be used for the guiding of drilling design and field operation, which decreases the incidence rate of complex incident and implements the destination of the drilling with high quality, safety, high efficiency and low cost in order to accelerate the pace of petroleum exploration.

关 键 词：井下复杂情况 井壁失稳 异常高压 安全密度 钻井液 技术对策 川西地区 

分 类 号：TE254[石油与天然气工程—油气井工程]