240℃超高温饱和盐水钻井液室内研究  

Laboratory Study on the 240℃ Ultra-high Temperature Saturated Brine Drilling Fluid

作　　者：王旭[1] 王中华[1] 周乐群[1] 张滨[1] 胡小燕[1] 王亚彬[1] 

机构地区：[1]中原石油勘探局钻井工程技术研究院

出　　处：《钻井液与完井液》2011年第4期19-21,92-93,共3页Drilling Fluid & Completion Fluid

基　　金：中原石油勘探局科技攻关项目"抗温240℃水基钻井液体系研究"(2009313)部分研究成果

摘　　要：针对超深井钻井工艺对钻井液的要求,采用抗高温降滤失剂MP488、抗高温解絮凝剂LP527、抗盐高温高压降滤失剂HTASP,配制了抗温达240℃、密度为2.0 g/cm3的饱和盐水钻井液体系。性能评价结果表明,该钻井液体系经过240℃、16 h高温老化后具有良好的流变性,高温高压滤失量(180℃)小于20 mL,钻井液抗钙、钻屑、黏土污染性能好,页岩一次回收率达97.4%,沉降稳定性好。For the requirements of the drilling fluid in the ultra-deep drilling technology,the temperature resistant up to 240 ℃,density of 2.0 g/cm3 saturated brine drilling fluid system is formulated with high temperature fluid loss additive MP488,hightemperature deflocculation agent LP527,temperature pressure resistant and salt tolerant filtrate reducer HTASP.Performance evaluation results show that this drilling fluid system is good with rheology after 16 hours high temperature aging at 240 ℃,high HTHP filtration(180 ℃) is less than 20 mL,clay pollution resistance and calcium and cuttings tolerance are good and it performs well in sedimentation stability with a 97.4% recovery of shale.

关 键 词：降滤失剂 解絮凝剂 抗高温 不增黏 高温 流变性能 饱和盐水钻井液 

分 类 号：TE254.3[石油与天然气工程—油气井工程]