崖城13-1气田高温低压大位移井钻完井工艺

为满足气田开发的需要，从2009年12月到2010年10月中海石油（中国）湛江分公司进行了崖城13-1气田4口调整井的钻完井作业，实施这批调整井存在以下技术难点：①井深大、水平位移大、裸眼段长；②井底温度高；③储层孔隙压力低；④地质情况较复杂；⑤海上模块钻机甲板面积狭小。为此，基于4口大位移调整井的实际钻完井作业情况，结合相关理论研究和软件计算，深入分析和总结了崖城13-1气田高温低压大位移井钻完井的技术特点与经验教训，主要研究与应用成果包括：井身结构设计、井眼轨迹控制、井眼稳定及井眼清洁、钻井液体系优选、高温低压作业措施、防磨降阻技术方案、下套管作业、钻头优选选及连续油管诱喷等钻完井工艺。结论认为：该套钻完井工艺具有坚实的理论基础，经过现场作业的检验并取得了良好的应用效果，是国内外开发高温低压油气田中的一个成功案例，对后续类似油气田的开发具有借鉴意义。

High temperature, low pore pressure and extended reach well drilling and completion technology in the Yacheng 13-1 Gas Field

The Zhanjiang Branch of CNOOC Limited had drilled and completed 4 adjusted wells in the Yacheng 13 1 Gas Field during the time from Dec 2009 to Oct 2010. Challenges were met in the drilling and completion of these 4 adjusted wells: great well depth and open hole length, extended reach, high bottomhole pressure, low reservoir pore pressure, complicated geological conditions, and small floor space of offshore rigs. In view of this, based on the drilling and completion practices in these 4 wells, this paper, i...