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我国至今已在14个地区11个层位上发现了高含CO_2(>30％)气。本文简要叙述了几个重要CO_2气藏的基本情况,按其主要成因归属,把已知CO_2气藏划为岩石化学成因、煤系成因和火山源成因等三种主要成因类型。根据煤系生成的CO_2气与一般生物化学成因的CO_2气在成生机制上有较大差别,和中国含煤盆地较为发育,作者把与煤系有关的CO_2气划为一种单独的成因类型,并介绍了该类CO_2气藏分布及成因上的特征。
So far, China has found high CO 2 (> 30%) gas in 11 horizons in 14 regions. This paper briefly describes the basic situation of several important CO_2 gas reservoirs. According to their main genesis, the known CO_2 gas reservoirs are classified into three main types of genesis: petrochemistry, coal formation and origin of volcanic origin. According to the formation mechanism of CO 2 gas and general biochemical CO 2 gas produced by coal measures, there is a great difference in the mechanism of formation and the development of coal-bearing basins in China. The author classifies the coal-based CO 2 gas as a separate genetic type , And introduced the distribution and genetic characteristics of these CO_2 gas reservoirs.