摘要
煤作为良好的烃源岩,不同有机组分,生烃特征差异较大。煤体结构不同,从某种程度上影响着煤层气的开发潜力。通过井下观测,淮南各矿区的构造煤比较发育,糜棱煤、碎粒煤占到50%以上。壳质组含量高,平均含量4.63%～16.62%;通过显微组分求出的干酪根类型指数TI为(-55～-74)<0,有机质类型为Ⅲ型干酪根,以产气为主;其中,产烃指数(∑HP)为141.7～226.9,产油指数(∑OP)为31.80～114.81。构造煤发育,致使煤储层的渗透率特低,地面煤层气开发受限,必须采取井下煤与煤层气一体化开发的模式进行。
As a good hymn source rock, the hydrocarbon generation characteristics of coal is closely related to its organic components, and the different stmctttre of coal to some extend will affect the potential of CBM development. The tectonic coal is usually developed in Huainan mine, which mylon coal and flax seed coal take up for 50%. The exinite content is between 4.63% and 16.62%. The kerogen index gained from maceral is （ - 55 - - 74） 〈0, and the organic type is m kemgen type which generally produces gas. The hydrocarbon generation index is 141.7- 226.9, the index of oil generation is 31.80- 114.81. Tectonic coal develops well, so the permeability is low, and the exploration and development of eoalbed methane is restrict- ed. Integrated development model of coal mining and gas extraction shall be used.
出处
《中国煤层气》
2010年第1期14-17,13,共5页
China Coalbed Methane
关键词
淮南煤田
显微组分
构造煤
生烃特征
地质意义
Huainan coalfield
maeeml
tectonic coal
hydrocarbon-generating property
geological significance
