苏里格气田丛式井钻井技术及应用

Cluster wells drilling technology and its application in Sulige gas field

张富成 王卫忠 扈东勇 杨进 谢科有 吕方申

ZHANG Fucheng WANG Weizhong HU Dongyong YANG Jin XIE Keyou LV Fangshen

中国石油钻井工程技术研究院，北京　100097 中原钻井二公司，河南濮阳　457000 中国石油大学，北京　102249 中国海洋石油中国有限公司湛江分公司，广东湛江　524057

Drilling Engineering Technology Research Institute, CNPC, Beijing 100097, China The Second Drilling Company of Zhongyuan Oilfield,Puyang 457000, China China University of Petroleum, Beijing 102249, China Zhanjiang Co. of CNOOC, Zhanjiang 524057, China

丛式井钻井技术是开发建设“科技、和谐、环保”型苏里格大油气田的需要，针对该区丛式定向井施工中地层研磨性强，井眼轨迹控制难，钻井速度慢，钻井成本高的难题，从井身剖面优化、钻头优选改进、井眼轨迹控制、钻井液体系应用等方面开展技术攻关和现场试验。从试验井苏14-20-13井的实施效果来看，钻井速度大幅度提升，取得了显著效果，基本形成了一套成熟钻井技术路线和优快钻井配套技术；也探索了苏里格丛式井提速的新思路、新方法，为下一步持续提速明确了主攻方向。

The cluster wells drilling technology is to meet the requirement of developing and constructing a“scientific, harmonious, and enviromental friendly”Sulige gas field. During the construction of directional cluster wells in the area, there exist some difficulties, such as the strong abrasive formation, the difficult trajectory control, low speed and high speed of drilling. So research and field test are launched from the perspectives of the optimization of casing profile, the optimization and improvement of drill bits, the trajectory control, and the application of drilling speed system. Judging from the applicatioin results of the Su 14-20-13 well, drilling speed is enhanced remarkably, and systematic technologies for fast drilling are developed. In additioin, new thoughts and methods are probed into for the speed-up of clusters wells drilling in Sulige gas field, making the direction of further steady speed-up more clearly.