【摘要】 <正> 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。更多还原

【Abstract】 This article discusses fuzziness in identification of kerogen types. In addition to mathematical analysis of character index of kerogen type, practical experience of petroleum geochemists should be taken into account.Basic concept and method of fuzzy sets are accepted. A fuzzy relation matrix and a weighted factor set are set up respectively through establishing a fuzzy relationship between considered factor (character index) and identified objects (types), and examining roles of individual factors in the identified totality. On the basis of all this, a fuzzy set model for comprehensive identification of kerogen types is proposed.更多还原