高河井田煤层气压裂工艺优选及安全管理分析

Optimization and safety management analysis of coal seam gas fracturing process in Gaohe Mine

煤层气属于清洁能源,合理的压裂工艺和安全开采是形成高产的关键因素。本文以高河井田及邻区已钻井资料为基础,结合国内煤层气安全开采现状,综合分析了高河井田煤层气储层特征、压裂工艺及安全管理。结果表明,区内3号煤储层具有储层压力低、渗透率低、顶底板弹性模量低及原地应力低等特征,建议采用活性水压裂工艺,支撑剂选择石英砂,建议区内从煤层气开采工艺、设备以及煤层后期开采3个方面制定安全管理办法。

Coalbed methane is a clean energy source, reasonable fracturing technology and safe mining are the key factors for high yield. Based on the drilling data of Gaohe Mine and adjacent areas, combined with the current status of safe mining of coalbed methane in China, fracturing process and safety management of coalbed methane reservoirs in Gaohe Mine were comprehensively analyzed. The results showed that the No. 3 coal reservoir in the area had the characteristics of low reservoir pressure, low permeability, low elastic modulus of the top and bottom plates and low stress. It was recommended to use active water fracturing technology and select quartz sand, safety management measures were formulated from three aspects of coalbed methane mining technology, equipment and coal seam mining.