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对辽河坳陷不同类型烃源岩有机质丰度、类型、成熟度、生气性能和生气强度进行研究后认为,区内已探明的天然气主要为生物热催化过渡带气和低温热解气,而高温热解气和裂解气很少,这与辽河坳陷烃源岩热演化程度不相称;热演化程度高、生烃强度大的洼陷带深层应该蕴藏着丰富的、成熟度相对较高的天然气。在分析了几个重点地区深层构造背景、储集条件的基础上,认为这些地区或处于气源灶内或与气源岩直接接触,成藏条件优越,是下一步勘探的重要领域。
After studying the organic matter abundance, type, maturity, gas generation and gas generation intensity of different types of source rocks in the Liaohe depression, it is concluded that the proven natural gas in the area is mainly biothermal-catalyzed transitional gas and low-temperature pyrolysis gas There is little pyrolytic gas and pyrolysis gas at high temperature, which is not commensurate with the degree of thermal evolution of source rocks in the Liaohe Depression. The deep depression with high degree of thermal evolution and high hydrocarbon generation intensity should be rich in deposits with relatively high maturity natural gas. Based on the analysis of the deep tectonic setting and reservoir conditions in several key areas, it is considered that these areas are either in gas source stoves or come into direct contact with gas source rocks and have favorable conditions for hydrocarbon accumulation, which is an important area for further exploration.