寿阳地区建井前期煤层气排采主控因素分析

Analysis on Main Control Factors of Coal Bed Methane Drainagein Early Stage of Mine Shaft Construction in Shouyang Area

位于山西省沁水盆地北部的寿阳地区,是近年来煤层气勘探开发的主要区块之一。通过对该地区煤层含气性、建井前期煤层气探井排采数据、煤层气藏保存现状、水文条件以及排采制度等因素的综合分析,找出了决定该地区煤层气排采效果的4个主控因素(即排采方式、排采制度、气体影响和煤粉堵塞),并提出了改善排采效果的措施。

Shouyang Area located in the north part of Qinshui Basin,Shanxi Province was one of the major coalbed methane exploration and development blocks in the recent years. With the comprehen- sive analysis on the coalbed methane potential of the area, the gas drainage data of the coalbed methane exploration well in the early stage of the mine shaft construction, conservation status of the coalbed methane reservoir, hydrogeologic condition, gas drainage system and other factors, there were four main control factors （including the gas drainage method, gas drainage system, gas influences and coal dust jamming） affected to the coalbed methane drainage effect of the area found. The paper provided the measures to improve the gas drainage effect.