摘要
从丰城区块煤层气已探明资料入手,介绍了该区块钻探、开发井排采试气现状,同时从主力煤层赋存情况、煤层水文地质、煤层含气性、煤层渗透性和煤的等温吸附性5个方面分析了该区块煤系地层及煤层气地质特征。该区块主力煤层为二叠系上统龙潭组的B4煤层,该煤层厚度较大(平均厚度1.73 m),含气量高(平均15.00 m3/t),依据相关行业标准规定的煤层气体积计算方法,结合已钻井资料,估算煤层气资源量约为5.45×1010m3,预示丰城区块有较好的煤层气开发前景。
Setting forth from the proven data of the coal bed methane(CBM) in Fengcheng Block,the paper introduced the drainage,production and test status of the exploration,drilling and development wells.Meanwhile,the authors analyzed the geological features of the coal bed formation and the coal bed gas of the block from 5 aspects of the occurrence of the main coal beds,coal bed hydrogeology,coal bed gas property,coal seam permeability and isotherm absorption.The main coal seam of the block is B4 coal seam of the Upper Permian Longtan Group,The coal seam thickness is larger(average thickness is 1.73 m) with high gas content(average 15.00 m3/t).In accordance with the CBM volume calculation method specified by relevant industry-standard and according to the drilling data from the drilled wells,the CBM reserve is estimated about 5.45×1010 m3,which indicates that Fengcheng Block has good prospects for CBM development.
出处
《录井工程》
2011年第2期62-64,78,共3页
Mud Logging Engineering
关键词
丰城区块
煤层气
含气量
地质特征
水文地质
估算
Fengcheng Block,coal bed methane(CBM),gas bearing content,geological characteristics,hydrogeology,estimate
