摘要
经过第一轮页岩气水平井钻井技术探索与总结,富顺永川区块第二轮水平井钻井施工中采用了近钻头伽马、伽马成像、地质导向等技术避免地质侧钻;优选低转速高扭矩螺杆和进口PDC钻头,实现一趟钻钻穿须家河地层;使用新型高造斜率的旋转导向PD Archer克服了常规旋转导向在页岩储层中造斜率低的难题,且平均机械钻速较螺杆组合提高4倍,平均缩短钻井周期88 d,创造了国内页岩气水平井钻井的多项指标,对高效、低成本开发四川盆地页岩气资源具有良好的指导作用。
Based on the summarization of the phase I 's shale gas horizontal well drilling technologies,the near bit gamma ray,gamma image and geosteering technology were applied for phase II's horizontal wells drilling in Fushun- Yongchuan block to avoid geological sidetracking. One run to drill out Xujiahe formation by using optimized ultra- low speed high torque motor and imported PDC bit. New version high dog leg capacity rotary steerable system( RSS) PD Archer conquered low build-up rate challenge in shale reservoir which caused by conventional RSS,and the ROP is 4 times more than motor bottom hole assembly,which saved 10 to 47 days drilling period. New technologies created a number of domestic shale gas horizontal well drilling indications,which has guide role for high efficiency and low cost to develop unconventional shale gas resource in Sichuan basin.
出处
《钻采工艺》
CAS
北大核心
2015年第2期14-16,6,共3页
Drilling & Production Technology
关键词
页岩气
水平井
旋转导向
shale gas,horizontal well,rotary steerable system
