红阳三矿储层特征及煤层气抽采方法探讨

摘要

以红阳三矿S101煤层气探采试验井的录井、试井、压裂等资料为基础分析了该地区的煤层气储层特征及S101井的排采试验曲线。结果表明：S101井地区储层具有埋深大、煤层多、间距较小、煤体结构较破碎、地层压力大、渗透率低、饱和度低、临储比极低等特点；射孔压裂排水降压式的抽采模式不适合该地区，建议利用卸压煤层气抽采技术抽采红阳三矿的煤层气资源。%On the basis of logging, test well and fracturing data from drainage test well S101 in the Hongyang coalmine No.3 analyzed CBM reservoir characteristics and test well drainage test curves. The result has shown that the reservoir in the area has characteristics of deep buried depth, multiple coal seams with small intervals, fragmentized coal mass structure, high pressure on strata, low permeabil⁃ity, low saturation and very low specific value of critical desorption pressure and reservoir pressure. Thus the drainage mode of perfora⁃tion fracturing water drainage is inadequate for this area, thereby pressure relief CBM drainage technology used in Hongyang coalmine No.3 proposed.