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在煤成烃理论的指导下,我国相继发现了长庆、陕141、崖13-1、东方1-1等大批大中型油气田,煤成气的总储量占整个天然气储量的比例达到40%。煤成烃理论进一步发展,对煤成气田的形成规律的认识不断深化。煤成气田主要分布在自生自储型和下生上储型构造、煤成生气中心及其周缘、低气势区、断裂圈闭中、煤成气区古构造中。煤系和亚煤系成气具有多期性,贯穿成煤作用的绝大部分阶段;煤系成油可能主要只有一期。在鉴别煤成气和油型气方面,将
Under the guidance of the theory of hydrocarbon generation and accumulation, many large and medium-sized oil and gas fields in Changqing, Shaanxi 141, Ya 13-1 and Dongfang 1-1 have been discovered in our country. The total reserves of coal-to-gas accounts for 40% of the total natural gas reserves. The theory of hydrocarbon generation has been further developed, and understanding of the formation of coal gas fields has been deepened. Coal-derived gas fields are mainly distributed in the authigenic and subgalactic structures, coal-derived gas centers and their peripheries, low-potential areas, fault traps and coal-to-gas zones. Coal and sub-coal system into a gas is multi-period, throughout most of the coal-forming phase; coal-based oil may be only one period. In the identification of coal gas and oil gas, will