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一 引言 近年来,由于有机地球化学研究的进展,把石油成因的基本概念进一步确立在沉积岩有机质演化的理论之上,已为大多数石油地质工作者所承认和重视。 根据沉积岩有机质演化的理论,石油是有机质成岩演化到一定阶段的产物。沉积岩中有机质的基本存在形式是干酪根,它通常占沉积岩有机质的95％以上。因此,可以认为干酪根是油气生成的母质。
I. INTRODUCTION In recent years, due to the progress of organic geochemical research, the basic concept of oil genesis further established on the theory of sedimentary organic matter evolution has been recognized and valued by most petroleum geologists. According to the theory of the evolution of organic matter in sedimentary rocks, petroleum is the product of the evolution of organic matter diagenesis to a certain stage. The basic form of organic matter in sedimentary rocks is kerogen, which usually accounts for more than 95% of the organic matter in sedimentary rocks. Therefore, kerogen can be considered as the parent material for hydrocarbon generation.