浅层大位移井表层钻井的关键技术与应用  

Key Technologies and Applications of Surface Drilling in Shallow Extended Reach Wells

作　　者：李晶晶 马积贺 LI Jingjing;MA Jihe(Shenzhen Branch of CNOOC(China)Co.,Ltd.,Shenzhen 518000,China;Shenzhen Operation Company of Oilfield Chemistry Division of CNOOC Oilfield Services Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]中海石油(中国)有限公司深圳分公司,广东深圳518000 [2]中海油田服务股份有限公司油田化学事业部深圳作业公司,广东深圳518000

出　　处：《化工管理》2024年第5期87-90,共4页Chemical Engineering Management

摘　　要：采用海水进行表层钻进已成为海上常规井、定向井常规技术,在大位移井中也通常采用海水深钻技术实现表层安全、高效钻进。对于浅层大位移井表层采用海水钻井技术尚未成熟,恩平油田浅层大位移井表层钻井面临地层松软、隔水导管窜漏、井眼轨迹难控制、井眼清洁效果不佳、易形成键槽、滑动钻进托压、下套管摩阻大、固井水泥返高把握难度大等问题。针对这些问题,通过井身结构、定向钻具组合、钻井参数、钻井液作业措施、顶驱下套管技术、固井施工方案等优选与优化,形成一套适用于恩平油田浅层大位移井表层海水钻井配套技术,对于其他海上油田的浅层大位移井表层钻井有借鉴和指导意义。The use of seawater for surface drilling has become a commonly used technique for both offshore conventional and directional wells,and seawater deep drilling technology is also commonly used to achieve safe and efficient drilling in high-deviation wells.However,the use of seawater drilling technology for shallow-depth high-deviation wells is still immature.In the Enping oilfield,shallow-depth high-deviation well drilling faces several challenges including soft geological formations,water leakage in the casing,difficulties in controlling the wellbore trajectory,poor cleaning of the wellbore,risk of keyholing,drilling torque issues,high friction during casing installation,and difficulties in achieving a high cementing height.To address these challenges,a comprehensive set of techniques and strategies were developed through the optimization of wellbore structure,directional drilling tools and parameters,drilling fluid management,top pushing technology for casing installation,and cementing operations.This optimized technology package developed for the Enping oilfield is expected to serve as a reference and guide for shallow-depth high-deviation well drilling in other offshore oilfields.

关 键 词：浅层大位移井 海水钻井 配套技术 

分 类 号：TE243[石油与天然气工程—油气井工程]