贵州某煤矿煤层气开发储量评价及产能预测研究

Research on the Reserve Evaluation and Productivity Prediction of Coalbed Methane Development in a Coal Mine in Guizhou

研究区位于黄泥塘向斜西北翼中段,总体呈一宽缓的单斜构造。通过室内试验手段获取研究区域内煤岩煤质分析、岩石力学性质、含气量、等温吸附等地质参数,获取了渗透率、压力、温度等煤储层参数,采用体积法计算地质储量,采用等温吸附法结合枯竭压力预测产能,为勘查区储量评价、后续勘探开发提供了依据。通过优选潜力煤层进行试采,落实主力产层,为计算探明储量提供依据。

The study area is located in the middle part of the northwest wing of Huangnitang syncline and is gener-ally a broad and gentle monocline structure.Geological parameters such as the coal quality analysis of coal rock,the mechanical properties of rock,gas content and isothermal adsorption and coal reservoir parameters such as perme-ability,pressure and temperature are obtained by the means of laboratory tests in the study area,the volume method is used to calculate geological reserves,and the isothermal adsorption method is used to predict productivity in com-bination with depletion pressure,which provides a basis for the reserve evaluation and subsequent exploration and development of exploration areas.The potential coal seam is selected for trial mining,and the main production seam is implemented,which provides basis for calculating proved reserves.