为了提高南堡13人工岛的整体开发进程，进行了大斜度定向井钻井技术研究。根据井位的分布特点及剖面的防碰设计要求，进行了密集丛式井井眼轨道整体设计；针对该区块储层具有强水敏、强盐敏及玄武岩地层易塌易漏的特点，结合成膜封堵理论，优选出具有强抑制性和强封堵性的KCl成膜封堵低侵入钻井液；通过分析已完钻井玄武岩地层厚度，优选高效PDC钻头与螺杆钻具配合进行复合钻进。现场应用表明，大斜度定向井钻井技术合理规避了南堡13人工岛井眼碰撞的风险，有效控制了缩径、阻卡等复杂情况，已完钻井中平均井径扩大率不小于8％，且均一次性投产。大斜度定向井钻井技术为南堡13人工岛油气勘探开发提供了工程技术保障。%In order to speed up the development process in Nanpu 1 3 artificial island ,high-inclination directional drilling was investigated .According to anti-collision design requirements and distribution char-acteristics of well location ,dense cluster well trajectories were designed .In view of strong water sensitivi-ty ,salt sensitivity and basalt collapse or leakage in this block ,a low filtration drilling fluid ,with KCl fil-ming and strong sealing property ,was selected based on the theory of film sealing ;after analyzing basalt thickness in drilled wells ,a highly efficient PDC bit was selected to work together with PDM tools .Field application showed that the comprehensive high inclination directional drilling technologies mitigated the risk of wellbore collision and complexities like tight hole ,pipe sticking in the drilling at Nanpu 1 3 artificial island ,the drilled wells had an average hole enlargement rate of less than 8% ,and all were put into produc-tion at once .Directional drilling technologies provide engineering and technical support for exploration and development of Nanpu 1 3 artificial island .
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