【摘要】 为解决钻井过程中经常遇到的压差卡钻、钻井液漏失、井壁垮塌及地层严重损害等问题,保证安全、快速钻进的同时,节约钻井成本,提高油气产量,人们研究开发了一种提高地层承压能力的新型钻井液体系,其中零滤失井眼稳定剂和防漏堵漏零滤失井眼稳定剂是其两个关键处理剂。研制了一种提高地层承压能力的CY-1无渗透处理剂,并对其性能进行了室内试验研究及评价,结果表明,CY-1处理剂与国内外同类产品相比,能快速形成封堵膜, 降低钻井液的滤失量,提高砂床和砂岩的承压能力,而且成本较低,效益显著。更多还原

【Abstract】 In order to solve drilling problems of differential sticking, lost circulation, wellbore collapse and reservoir damages, etc. , a novel drilling fluid that can enhance formation pressure bearing ability is developed to ensure safe and fast drilling operations, reduce drilling cost and improve hydrocarbon productivity. Of all additives in the fluid, zero-filtration wellbore stabilizer and lost circulation preventive and plugging material are two key ones. CY-1, a non-invasive additive that can improve formation pressure bearing ability, is developed and its performances are tested in lab. The results show that CY-1 can more quickly form blocking membrane, largely reduce mud filtration and enhance sandstone formation pressure bearing ability with remarkable economic benefits at lower cost when compared with similar products applied worldwide.更多还原