恒流变合成基钻井液新机理及体系的研制  

Development of New Mechanism and System of Flat-Rheological Synthetic Base Drilling Fluid

作　　者：耿铁[1] Geng Tie(China Oilfield Services Limited,Langfang 065201,China)

机构地区：[1]中海油田服务股份有限公司

出　　处：《海洋工程装备与技术》2019年第S01期315-319,共5页Ocean Engineering Equipment and Technology

摘　　要：本文针对深水合成基钻井液技术难题,提出深水合成基钻井液恒流变特性调控机理与方法,在热力学不稳定的油包水钻井液体系中,采用分子动力学模拟设计分子结构降低非键作用力的影响,研制同时具备流型调节和高效乳化功能的深水乳化剂,并构建了深水恒流变合成基钻井液。钻井液体系已在我国南海西部超深水井中取得成功应用,具有较好的推广应用价值。This paper focuses on the technical difficulties of deepwater synthetic-based drilling fluid.The mechanism and method of flat-rheology control of deepwater synthetic-based drilling fluid were proposed.Molecular dynamics simulations were used to design molecular structures to reduce the influence of non-bonding forces in thermodynamically unstable oil-in-water drilling fluid system.The high-efficiency emulsifier for deepwater synthetic-based drilling fluid were developed which flow pattern regulation and efficient emulsification are provided together.The flat-rehology synthetic-based drilling fluid was optimized.The new drilling fluid system successfully applied in the ultra-deepwater well of the western South China Sea and has good popularization using value.

关 键 词：深水钻井液 恒流变特性 非键作用力 乳化稳定性 

分 类 号：TE242[石油与天然气工程—油气井工程]