新场气田长水平段水平井钻井技术

Long lateral-section horizontal well drilling technology in Xinchang Gas field

胥豪 唐洪林 张晓明

XU Hao TANG Honglin ZHANG Xiaoming

胜利石油管理局钻井工艺研究院，山东东营　257017

Research Institute of Drilling Technology, Shengli Petroleum Administration Bureau, Dongying 257017, China

为提高川西新场气田开发效果，在新场构造北翼部署了一个3口井长水平段水平井井组。在油藏地质特征分析的基础上，将以往三开井身结构优化为二开；针对水平井裸眼段长、水平段长、位移大的特点，通过采用井眼轨迹控制、摩阻扭矩监测技术以及优选钻井液体系等措施，并配合高效PDC钻头，安全高效地完成了钻井施工，为川西地区中深长水平段水平井钻探积累了宝贵的经验。

To improve the development effect of Xinchang gas field in western Sichuan, a long lateral-section horizontal well pattern of three wells was deployed in the northern of Xinchang structure. Based on the analysis on reservoir geology characteristics, the well structures were optimized to two trips from three trips. These wells have the characteristics of long open hole, long lateral section, and large displacement. Through making the hole trajectory control measures, monitoring drag and torque, and optimizing drilling fluid, the drilling efficiency of the pattern wells has been greatly improved, cooperated with PDC bit during drilling, which provided precious experiences for drilling long lateral-section horizontal wells in mid-depth formation in western Sichuan.