甲酸盐钻井液完井液研究与应用  

Study and Application of Drilling and Completion Fluid Based on Formate

作　　者：王西江[1] 曹华庆[2] 郑秀华[3] 于培志[1] 

机构地区：[1]中国石化石油工程技术研究院,北京100101 [2]中国石化华东石油局钻井工程公司,江苏镇江212003 [3]中国地质大学(北京)工程技术学院,北京100083

出　　处：《石油钻探技术》2010年第4期79-83,共5页Petroleum Drilling Techniques

摘　　要：钻进高温高压地层时,常规高密度钻井液完井液因其重晶石含量高、高温稳定性不好及流变性难以控制等原因,常常不能满足现场钻井和完井的需求。为此,在分析甲酸盐的抑制性、增黏性和毒性的基础上,筛选出了以甲酸盐溶液为基液的甲酸盐钻井液完井液配方,评价了其抑制性、抗污染能力和油层保护效果。甲酸盐钻井液完井液性能评价试验及在库1井的现场应用效果表明,甲酸盐钻井液完井液具有密度可调、高温稳定性好、抑制性强、抗污染能力强、低毒且易降解、油层保护效果好等特点,能很好地满足高温高压地层钻井、完井的需要。Commonly used drilling fluids could not meet the requirement when drilling through HPHT formations due to high content of barite,unsteady performance under high temperature,and difficult rheological properties control.Based on the analysis of the inhibition,viscosifying capability and toxicity of formate,the drilling fluid was selected using formate as base fluid.Its inhibition,anti-pollution capacity and formation protection results were evaluated.The selected drilling completion fluid was used in Well Ku-1.The results show that it has adjustable density,high temperature stability and strong inhibition,good compatibility with other conventional mud additives and reservoir,low toxicity and biologically degradation.It meets the requirement of HPHT formation drilling and completion.

关 键 词：甲酸盐 钻井液 完井液 抑制性 流变性 库1井 

分 类 号：TE254.1[石油与天然气工程—油气井工程]