郑平01-1煤层气多分支水平井优化设计与实践

煤层气多分支水平井技术集成了钻井技术优化设计、远距离穿针、精确地质导向、煤层保护与井壁稳定控制等技术,是一项技术性强、施工难度高的系统工程。为探索该项技术在沁水煤层气田郑庄区块的适用性,利用国内现有技术和装备,进行了郑平01-1煤层气多分支水平井现场施工。结合现场实施情况,从多分支水平井优化设计、两井连通、保护储层钻井液、多分支水平井井眼轨道控制、钻井施工工艺等方面论述了相关技术要点,探讨了煤层气多分支水平井的设计方法和理论,为煤层气的高效勘探开发提供了技术参考。

Optimum design and field practice of multi-branch horizontal CBM well ZHP01-1

Multi-branch horizontal well drilling is one systematic and high-tech project, which integrates optimum design, remoteintersection, accurate geosteering, coal protection, hole stability and other techniques. In order to evaluate the adaptability of this techniquein Qinshui Basin, Multi-branch horizontal well ZHP01-1 is performed. This paper discusses some key techniques about optimummulti-branch design, remote intersection, drilling fluid, track control, etc. The principle and method of design for CBM wells...