摘要
Abstract
Coalbed methane also known as coal mine gas is a associated mineral resource adsorbed in coal seams.The rational development of coalbed methane is of significant importance for the development of clean energy and the safety of coal mining.However,high concentrations of coal mine gas increase the risk of mine explosions and complicate the process of coal mining.In this paper,focusing on the No.3 coal seam in a high coalbed methane concentration mine,the authors summarize a drilling-fracturing-production scheme for extraction technology.Firstly,the coal seam conditions,including gas content,permeability,porosity,and reservoir pressure,are analyzed through gas content measurements and relevant experiments.Secondly,based on the characteristics of the coal seams in the region,a technical plan for ground gas extraction in high gassy mines is proposed by optimizing drilling,fracturing,and drainage methods,and on-site testing is conducted.The on-site experiments demonstrate that this optimization scheme not only ensures the safety of coal mining,but also achieves significant economic and environmental benefits.关键词
高瓦斯矿井/定向井水力压裂/支撑剂优化/瓦斯排采Key words
high gassy mine/directional well hydraulic fracturing/proppant optimization/gas drainage分类
矿业与冶金
