论文部分内容阅读
白 5 6井完钻井深 4 6 5 0m ,是白庙区块第一口超过 4 5 0 0m的深井。上部地层 (330 0m以上 )采用聚合物正电胶钻井液体系 ,中深井地层 (330 0～ 4 4 98m)采用聚磺钾盐钻井液体系 ,下部地层小井眼采用聚磺正电胶钻井液体系。现场使用表明 ,聚合物正电胶钻井液具有独特的流变性、抑制性和较强的防塌能力 ,聚磺钾盐钻井液具有防塌性能好 ,抗高温能力强 ,聚磺正电胶钻井液具有低粘高切特性 ,降低井眼环空压力损耗 ,满足了白 5 6井各井段钻井施工要求。
Bai 56 well drilled 4650m deep, being the first well of the White Temple block with a depth of more than 4500m. In the upper strata (330m above sea level), a polymer positive gel drilling fluid system is used. The middle and deep well strata (330 0 ~ 4 4 98m) use polysulfo-potassium salt drilling fluid system, and the lower strata slim borehole use polysulfone positive charge rubber drilling fluid system . The field use shows that the polymer positive gel drilling fluid has unique rheology, inhibition and strong anti-collapse ability, polysulfonated potassium salt drilling fluid has good anti-collapse performance, high temperature resistance, The liquid has the characteristics of low viscosity and high shear and lowers annulus pressure loss and meets the drilling requirements of each well of Bai56 well.