聚合醇水基钻井液在文33-196井的应用  

Application of polyol water base drilling fluid in Wen33-196 well

作　　者：边继祖[1] 张献丰[1] 张全明[1] 魏兰[1] 

机构地区：[1]中原石油勘探局钻井四公司

出　　处：《钻井液与完井液》2001年第4期30-31,共2页Drilling Fluid & Completion Fluid

摘　　要：文33-196井是中原油田文留构造南部文33断块上的一口大斜度双靶定向井,设计井深为3400 m,最大井斜角为 45°,水平位移为696 m。该区块沙河街组粘土矿物以伊/蒙混层为主,亚甲基蓝容量高,膨胀性强,易坍塌掉块,油层易受污染,造成产量降低。文33-196井采用聚合醇水基钻井液体系。现场应用表明,聚合醇水基钻井液具有良好的润滑防卡性能、抑制性能和防塌性能,渗透率恢复值较高,对油气层有一定的保护作用,满足了文33-196井大斜度双靶定向井的施工要求。Wen33-196 well is a double targets directional hole with deviation angle of 45° and horizontal displacement of 696 m. Reactive illite/smectite mixed layer in the block leads to swelling and sloughinging. Polyol water base drilling fluid is used. Field application shows this polyol water-based drilling fluid can provide good lubrication, inhibition, sloughing prevention. This results good formation protection.

关 键 词：水基钻井液 聚合醇 井眼稳定 定向钻井 钻井液配方 

分 类 号：TE254[石油与天然气工程—油气井工程]