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研究沉积岩中分离出的烃类气体,对于阐明油气的形成和油气藏的普查都能提供重要资料。但是迄今对分散的烃类气体的研究,实际上仅限于甲烷系列的烃C_1-C_6。我们认为,构成石油和凝析油成分的其它类型的气态低分子烃,特别是低沸点单环芳烃也是很重要的。众所周知,在水化学方面,天然水中苯和甲苯的含量可以作为普查石油的指标。低沸点芳香烃易溶于水并具有较强的挥发性,因而有利于它们散逸(运移)。根据上述,笔者在证实和研究岩石分散气体中低沸点单环芳烃也具有同样特性方面所作的工作,其目的在于发现一些有利于天然气地球化学普查的指
Studying the hydrocarbon gas separated from sedimentary rocks can provide important information for clarifying the formation of oil and gas and the census of reservoirs. However, up to now, the research on dispersed hydrocarbon gas is actually limited to the methane series hydrocarbon C_1-C_6. We believe that other types of gaseous low molecular hydrocarbons, especially low boiling point monocyclic aromatic hydrocarbons, that make up the oil and condensate components are also important. As we all know, in water chemistry, natural water, benzene and toluene content can be used as an indicator of census of petroleum. Low-boiling aromatic hydrocarbons are easily soluble in water and have strong volatility, thus facilitating their dissipation (migration). Based on the above, the author’s work in confirming and studying the same characteristics of low boiling point monocyclic aromatics in rock-dispersed gas with the aim of finding out some means for the geochemical census of natural gas