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源,是烃源岩的“源”。那么什么是烃源岩?通俗的定义是:“富含有机质、大量生成油气与排出油气的岩石。”换句话说,“是一种能够产生或已经产生可移动烃类的岩石”。烃源岩与烃类有机起源说紧密联系,因此,评价烃源岩必须依据油气成因的现代概念。亨特(J.M.Hunt)将烃源岩限定为“曾经产生并排出了足以形成工业性油气聚集之烃类的细粒沉积”。从广义的成烃角度看,既指成熟烃源岩,也包括未成熟烃源岩。通常要从“有机质丰度、有机质类型和有机质成熟度”三个方面的分析
Source is the “source” of the source rock. So what is a source rock? The popular definition is: “A rock that is rich in organic matter, generating large amounts of oil and gas, and pumping oil and gas.” “In other words,” a rock that produces or has produced movable hydrocarbons “ ”. Source rocks are closely related to the organic origin of hydrocarbons. Therefore, the evaluation of source rocks must be based on modern concepts of oil and gas genesis. J.M. Hunt limited the source rocks to “fine-grained sediments that once produced and expelled hydrocarbons that form an accumulation of industrial hydrocarbons.” From a broad sense of hydrocarbon generation, it refers to both mature source rocks and immature source rocks. Usually from “organic matter abundance, organic matter type and organic matter maturity ” three aspects of analysis