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煤不仅本身是目前世界上蕴藏最丰富的燃料,而且在成煤作用过程中形成大量的天然气,在其低、中级变质阶段还产生一定数量的石油。六十年代以来在西西伯利亚盆地北部、北海南部盆地及其南岸发现了储量巨大(十七万亿米~3)、气田众多,煤变质作用生成的天然气,其储量占世界天然气总储量五分之一以上。苏联有大约65%探明的天然气资源均在含煤地层中,世界上的大气田和天然气储量70—80%来自含煤系地层。世界
Coal is not only the most abundant fuel in the world at present, but also forms a large amount of natural gas during coal formation and produces a certain amount of oil during its low- and intermediate-stage metamorphism. Since the 1960s, there have been discovered a large amount of natural gas (17 trillion m3) in the northern part of the West Siberia basin and in the southern Beihai Basin and its south bank with large gas fields and coal metamorphism, accounting for one-fifth of the world total reserves of natural gas One or more. About 65% of the proven natural gas resources in the Soviet Union are in coal-bearing formations, and 70-80% of the world’s major gas and natural gas reserves are from coal-bearing strata. world