贵州兴义朝阳煤矿区煤层气赋存特征

Occurrence Characteristics of Coalbed Methane in Chaoyang Coal Mine Area, Xingyi,Guizhou Province

该文通过对贵州兴义朝阳煤矿区煤层特征及煤层气含量测试分析,并结合矿井生产资料综合研究,研究结果表明:17煤层、19煤层为低渗透煤储层,属完善层;18煤层为低渗透煤岩层,属欠完善层。煤层瓦斯变化规律大致有由浅部向深部,瓦斯含量先增大后减小的趋势。煤层含气量低,且分布不均一,宜适合矿井生产进行采区抽采。

Based on the test and analysis of coal seam characteristics and CBM content in Chaoyang Coal Mine, Xingyi, Guizhou Province, and combined with the comprehensive study of mine production data, the results show that 17 and 19 coal seams are low permeability coal reservoirs and belong to perfect seams, while 18 coal seams are low permeability coal seams and belong to imperfect seams. Coal seam gas varies from shallow to deep, and the gas content increases first and then decreases. Coal seam has low gas content and uneven distribution, so it is suitable for mining area extraction in mine production.