摘要
以煤田地质勘查资料为依据，结合井田及周边煤层气勘探成果，研究了古城井田煤层气赋存地质条件，对煤层气资源量及开发条件进行了评价。结果表明：3”煤层平均含气量12．60m’／t，平均含气饱和度约为67．34％，总体表现为欠饱和一饱和煤储层，区内煤层气预测地质储量为138．64x10。m3,资源丰度平均为0．90-10^6m。／km2，资源富集（资源丰度）表现为西高东低、北高南低的格局；3“煤层可采资源量大，预测煤层气实际采收率为35％-45％，总可采资源量60．49x10^9m’。
On the basis of coalfield geological exploration data, combined with CBM exploration results of the Gucheng minefield and pe- riphery, studied CBM hosting geological condition in the minefield, evaluated resources and exploitation conditions. The result has shown： average methane content of the coal seam No.3 is 12.60m3/t, average methane saturation about 67.34%, appeared as undersaturat- ed-saturated coal reservoir as a whole. Predicted geological reserve of CBM in the area is 138.64x 108m3, average resource abundance 0.90x 10m3/km2 resource enrichment （abundance） appeared as a pattern of high west, low east and high north, low south. Mineable re- source of coal No.3 is large, predicted practical CBM recovery rate 35%-45%, total recoverable resources 60.49xlOSm3.
出处
《中国煤炭地质》
2013年第8期15-19,共5页
Coal Geology of China
关键词
古城井田
含气性
储层特征
地质控制
煤层气资源量
Gucheng minefield
methane-bearing property
reservoir features
geological control
CBM resource
