通过对潞安矿区煤层气井生产历史分析,结合国内外煤层气增产技术,对研究区煤储层特性、煤岩体力学性质进行了研究,重点分析了煤岩体力学特征对压裂技术的影响,提出了适合于本区的煤层气增产措施,包括垂直井与中半径水平井组合技术,空气、泡沫钻井技术,氮气泡沫压裂技术等。
This paper analyzed the production history of coalbed methane wells in Lu'an mining area.Then combined with the techniques of enhanced coalbed methane at home and abroad,the coal reservoir's characteristics and the coal and rock mass's mechanical properties in Lu'an mining area was researched.The article emphatically analyzed the effect of the mechanical properties on the fracturing technique.Finally,the paper put forward the measures for enhancing coalbed methane,which are suitable for the study area,including combination technique of vertical well and medium-radius horizontal well,the air or foam drilling technology,nitrogen foam fracturing technique and so on.