caved hole

Analysis on the mechanisms of bare hole cave completion technology in the development of coalbed methane,the stressing states of strata around the cave and some relative formulas are presented,and the valuable application suggestions are advanced.

对煤层气开发中所应用的裸眼洞穴完井技术的作用机理进行了分析，给出了洞穴周围地层的应力分布状态，引出了几个相关的公式，对洞穴完井的应用提出了几个有益的建议。