环境可接受的聚合醇钻井液的研制及在渤海地区的推广应用

Spreading the Application of Environmentally Acceptable Polyol Drilling Fluid in Bohai Area

为解决钻井工程技术、储层保护技术与环境保护之间的矛盾而研制的聚合醇钻井液在歧口１８１油田快速钻井试验成功后，又先后推广应用到歧口１７２、歧口１７３和锦州９３等油田近１００口井。结果表明，该钻井液具有优良的抑制性、润滑性和井壁稳定性能好、维护简单等特点，不仅具有环境可接受性，而且有利于识别和发现油气层。如歧口１８１油田，仅地质储量净增约２６８万吨。

A new polyol drilling fluid system,developed for meeting the requirements of drilling engineering,reservoir protection and environmental protection,had been made success fully with trial in the field of Qikou 181,and after this has been spreaded in almost 100 wells of some oilfields.The results obtained show that the drilling fluid is characterized by inhibiting shale swelling,simple maintenance,stablility in anti slouphing wellbore.The system is not only environmentally acceptable but also favorable to discovery oil gas formation. For example,the geologic reserve from the Qikou 181 oilfield has gained an increment of about 2680 thousand tons.