全国褐煤主要分布区煤层气资源量预测

Coalbed methan resource prediction in lignite-distributed areas in China

由于我国尚未开展褐煤分布区的煤层气资源及开发潜力评价,为了完善我国煤层气资源量预测成果,运用体积法计算了我国褐煤主要分布区的煤层气原地资源量,计算结果为13 954.65×108m3;运用损失分析方法计算了其技术可采资源量,结合“全国煤层气资源评价”成果,可完整地预测出我国陆上煤田埋深2 000 m以浅的煤层气原地资源量(GIP)为32.86×1012m3。

The coalbed methan（ CBM） resoureces in lignite and its development potential evaluation are lack in China. In order to supplement the result of China CBM resources prediction, in this paper the calculation result of in-place CBM resources in lignitedistributed area is as much as 13 954.65 ×10^8 m^3 by volumetric method and its technically recoverable resource is calculated by lost-volume analytical method. Combining the result of the national CBM resources evaluation,for the land coal field of China the in-place CBM resources of 32.86 ×10^12 m^3 at shallower than 2 000 m depth is predicted completely.