硅酸钾聚合醇钻井液的研制及性能评价  

Research and Evaluation of Potassium Silicate Polyol Drilling Fluid

作　　者：白杨[1] 王平全[1] 吴建璋[2] 钱志伟[1] 胡亚琴 

机构地区：[1]油气藏地质及开发工程国家重点实验室,西南石油大学,四川成都610500 [2]继续教育与网络学院西南石油大学,四川成都610500 [3]克拉玛依区民政局,新疆克拉玛依834000

出　　处：《石油化工》2012年第5期567-572,共6页Petrochemical Technology

摘　　要：从处理剂的综合作用出发,将硅酸钾的化学效应(胶凝沉淀)以及聚合醇的物理效应(浊点效应)复合应用,建立了一套具有凝胶-浊点效应的膜结构硅酸钾聚合醇钻井液体系,并对该体系的性能进行了综合评价。实验结果表明,该体系具有流变性好、失水造壁性好、抑制性强、抗污染能力强(抗NaCl污染6%(w);抗Ca2+或Mg2+污染0.5%(w);抗钻屑污染15%(w))、润滑性好、封堵能力强和热稳定性好等优点,为钻井液稳定井壁研究开拓了新的发展方向。A silicon potassium polyol drilling fluid system with membrane structure were prepared, which combined the chemical effect of potassium silicate（gel sedimentation） with the physical effect of polyol（cloud point effect）. The evaluation of the comprehensive performance of the system was carried out. It was showed that the rheological characteristics, filtration property, inhibition, thermostability, blocking capacity and lubricity of this system were good. And its contamination tolerance was outstanding, for NaCl, MgCl2, CaCl2 and cuttings, the tolerances were 6%, 0.5%, 0.5% and 15%. The drilling fluid is beneficial to stabilizing the well wall.

关 键 词：硅酸钾 聚合醇 膜结构 钻井液 稳定井壁 

分 类 号：TE254.6[石油与天然气工程—油气井工程]