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为了研究煤矿区煤层气规模开发的可行性,指导该技术在煤矿区煤层气资源开发以及瓦斯治理方面的应用,文章首先以地质条件分析为基础,对官寨矿区的煤层气资源进行了评价,结果显示井田内煤层气地质条件和储层条件均相对优越,不仅煤层气储量丰富,而且气成分以CH_4为主。然后利用储层模拟软件对单井产气量进行预测,结果显示气井产量较高,连续排采15年单井平均气产量为932.00 m~3/d,4号和9号煤层瓦斯含量下降33.93%和33.33%。综合分析认为官寨井田煤层气规模开发具有较好的开发潜力和安全效益。所以将地质条件分析、资源潜力评价与产能预测相结合,是一套实用性较强的煤矿区煤层气规模开发可行性研究方法。
In order to study the feasibility of CBM development in coal mines, and to guide the application of this technology in the development of CBM resources and the management of gas in coal mines, the paper firstly evaluated the CBM resources of Guzhai mining areas based on the analysis of geological conditions, The results show that the coalbed methane geological conditions and reservoir conditions in the minefield are relatively superior. Not only the CBM reserves are abundant, but also the CH4-based gas composition. Then, using the reservoir simulation software to predict the single well gas production, the result shows that the gas well output is relatively high. The average single gas production in successive 15 years is 932.00 m 3 / d, while that of coal seams 4 and 9 is decreased by 33.93% And 33.33%. The comprehensive analysis shows that the development of coalbed methane in Guzhai Minefield has good development potential and safety benefits. Therefore, the combination of geological conditions analysis, resource potential evaluation and capacity forecasting is a set of practicable feasibility study methods for coalbed methane scale development in coal mines.