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On abiogenic natural gas

机译：关于非生物天然气

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NATURAL gases usually refer to the inflammable gases dominated by methane from the angle of research on energy gases. Three genetic types of natural gases can be recognized according to the process of methane generation: ( i ) biogenic (bacterial) gas, mainly the gas formed by the decomposition of organic matter in sediments under the action of anaerobic bacteria; ( ii ) thermogenic gas, mainly the gas formed by the degradation of organic matter in sediments under the action of certain temperature and pressure; ( iii ) abiogenic gas, mainly the primordial gases from the deep earth or the hydrocarbon gases synthetized by inorganic reactions in the deep earth. The biogenic theory is accepted by most geologists, i.e. organic matter in sediments can produce commercial gas reservoirs under the actions of bacteria, temperature and pressure. However, whether the abiogenic hydrocarbons can accumulate into reservoirs has been a debatable problem in the earth scientific circles in the recent 100 years.
机译：从对能源气体的研究角度来看，天然气通常是指以甲烷为主的易燃气体。根据甲烷的生成过程，可以识别出三种遗传类型的天然气：（i）生物（细菌）气体，主要是在厌氧细菌的作用下沉积物中有机物分解形成的气体; （ii）产热气体，主要是在一定温度和压力作用下，沉积物中有机物降解而形成的气体; （iii）非生物成因气体，主要是来自深层地球的原始气体或由深层地球的无机反应合成的碳氢化合物气体。生物成因理论被大多数地质学家所接受，即沉积物中的有机物可以在细菌，温度和压力的作用下产生商业气藏。然而，近100年来，非生烃是否能够积累到储层中一直是地球科学界争论不休的问题。

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