摘要
充分利用正电聚醇和甲酸盐的协同增效作用,研制了新型甲酸盐／正电聚醇钻井液体系。在地层孔隙压力较低时,主要使用正电聚醇处理剂确保钻井液具有良好的性能;在地层孔隙压力较高时,则配合使用甲酸盐进行加重,以维持低固相钻井液体系的优良性能。在张海5井、张海11井等多口井的应用表明,甲酸盐／正电聚醇钻井液具有抗温、防塌、润滑和储层保护等多种功能,能很好地满足安全、快速钻井的要求。
A new kind of formate/positive-charged polyglycol drilling fluid system has been developed making full use of the coordinated effect of formate and positive-charged polyglycol. When the pore pressure is relatively low, the positive-charged polyglycol is mainly used to ensure the muds having good performance. When the pore pressure is relatively high, the formate is used as a weighting agent to maintain a low-solid mud system. The field applications in the wells of Zhanghai-5 and Zhanghai-11, etc. indicate that the mud system has multi-functions such as high-temperature stability, anti-sloughing, lubrication and formation damage control, etc. , and can meet the requirements of safety and rapid well drilling.
出处
《石油钻探技术》
CAS
北大核心
2006年第5期34-38,共5页
Petroleum Drilling Techniques
关键词
水基钻井液
甲酸盐
聚合醇
钻井液试验
现场试验
water-based drilling fluids, formate
polyglycol
drilling fluid testing
field testing
