寺河西区煤层气垂直井分层压裂合层排采的研究  

Design of Separate Layer Fracturing and Combined Layer Discharge and Mining in CBM Vertical Well in Sihe Mine

作　　者：武玺 

机构地区：[1]山西蓝焰煤层气集团有限责任公司,山西晋城048204

出　　处：《山西煤炭》2016年第2期75-78,共4页Shanxi Coal

摘　　要：结合沁水盆地晋城寺河矿区潘庄区块的煤层气勘探开发经验,得出在煤层顶底板围岩性质、煤储层供液能力差异、压力梯度、煤层间隔距离、原始渗透率及压裂后渗透率等因素在符合特定条件的情况下,3号煤层与15号煤层本身的供液能力是衡量某一个具体区块进行合层排采的可行性的主要因素。合层排采的最适宜时期为15号煤层的补给或者径流区在与3号煤层内部的滞流区发生重叠的时期;合层排采的不适宜时期为15号煤层内部的滞流区与3号煤层内部的径流区和滞流区发生重叠的时期。Based on the exploration and development of combed methane （CBM） in Panzhuang Section of Sihe Mine of Qinshui Basin, the study concludes the surrounding rock features of coal seam roof-floor, difference of fluid supply capacity, pressure gradient, distance between seams, original permeability, permeability after fracturing, and other factors of coal reservoir. In accord with certain conditions, the fluid supply capacity of No.3 and No.15 seam is one of major factors to evaluate the feasibility of discharge and mining of combined layers in a specific section. It is most suitable for the combined layer discharge and mining when the supply or runoff area of No.15 seam overlaps with the stagnant area of No.3 seam. But it is not suitable when the stagnant area of No.15 seam overlaps with the supply or runoff area of No.3 seam.

关 键 词：分层压裂 合层排采 垂直井 

分 类 号：TD84[矿业工程—煤矿开采]