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油气的成因一直有两种理论,一是“生物成因”论,二是“非生物成因”论。且以生物成因论为主,即沉积盆地中沉积的有机物质经过成岩和热蚀变作用生成石油和天然气,并得到地球化学的证实。非生物成因的理论出现较晚。其理论的基本观点是:地球在形成时从原始太阳星云中获得大量原始烃类气体,主要有氦、甲烷等。这些气体在一定的地质构造活动中被存于地下,而地球深部的高压又抑制其分解,使之聚合而成气藏。如果这一理论能得到证实,非生物成因天然气将是宇宙
The origin of oil and gas has always had two theories, one is “biological causes ” theory, the second is “non-biological causes ” theory. And the main biological genesis, that is deposited in the sedimentary basin organic matter after diagenesis and thermal alteration to produce oil and gas, and confirmed by geochemistry. The theory of abiotic causes appears later. The basic idea of its theory is: When the Earth was formed from the original solar nebula to obtain a large amount of the original hydrocarbon gas, mainly helium, methane and so on. These gases are underground in certain geological tectonic activities, and the high pressure in the deep earth suppresses their decomposition and polymerizes into gas reservoirs. If this theory can be proven, non-biological causes of natural gas will be the universe