正电性钻井液在塔河油田的应用  

The Application of a Positively Charged Drilling Fluid in Tahe Oilfield.

作　　者：于培志[1] 钱晓琳[1] 王西江[1] 苏长明[1] 

机构地区：[1]中国石化石油勘探开发研究院

出　　处：《钻井液与完井液》2009年第2期88-89,共2页Drilling Fluid & Completion Fluid

摘　　要：针对塔河油田盐膏层、易塌地层的井壁稳定问题,使用了正电性钻井液,该体系以阳离子聚合物、乳化石蜡与有机硅醇抑制剂为主剂。室内研究表明,正电性钻井液具有优良的页岩抑制性和极强的抗盐、抗钙与抗温能力,体系稳定性能好,抗温达150℃以上,页岩回收率达90%以上,具有较好的油气层保护效果。在塔河油田的现场应用表明,正电性钻井液与其它处理剂配伍性好,具有良好的包被抑制性、防垮塌能力、润滑性和优良的抗污染能力;在钻井施工过程中,钻井液性能稳定,有效地解决了井壁稳定问题,提高了钻井速度,取得了理想的应用效果。A positively charged drilling fluid formulated with cationic polymer, emulsified olefin, and organic silanol was used to deal with the salt/gypsum contamination and borehole sloughing problems. This drilling fluid is strongly inhibitive and resistant to salt and calcium contamination, and is stable at temperature of 150 ℃. The application of this mud in Tahe Oilfield proved the excellent compatibility of the fluid with other commonly used additives, and gauged holes were obtained and downhole troubles were eliminated.

关 键 词：正电性钻井液 钻井液性能 井眼稳定 塔河油田 

分 类 号：TE254.3[石油与天然气工程—油气井工程]