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近几年来,我国学者在确定油气源岩方面进行了大量的工作,探索着各种指标在陆相地层中的应用条件和对比效果。本文就是在这一基础上,关于油源对比指标的科学意义、运用条件及其判别性质的讨论,而重点在于那些地球化学化石。文中将对比指标分为八类:1.原油物性;2.原油孢粉;3.元素钒、镍、硫含量;4.族组成;5.正构烷怪和一般环烷烃;6.基团;7.同位素;8.地球化学化石(包括色素,无环和多环萜类),结合我国应用的实例,分别进行了论述,并强调指出,在各种对比参数中,不论其可比性的大小,都必须考虑对比的条件。在对比中,有机质成熟度的一致性和地球化学环境的相似性是重要的。本文还阐明了把油源对比当作一个统一的油气生成和演化的成因序列来对待的观点。
In recent years, a great deal of work has been done by scholars in our country in determining source rocks of oil and gas, exploring the application conditions and comparative effects of various indicators in continental strata. This article is based on this, on the scientific significance of the oil source comparison criteria, the use of conditions and the nature of the discriminatory nature of the discussion, but the focus is on those geochemical fossils. The article will be divided into eight categories of comparative indicators: 1. Physical properties of crude oil; 2. Spores of crude oil; 3. Elements of vanadium, nickel, sulfur content; 4. Family composition; 5. Normal alkanes strange and general naphthenes; 6. Group ; 7. Isotopes; 8. Geochemical fossils (including pigments, acyclic and polycyclic terpenoids), with examples of our application, were discussed separately, and stressed that in a variety of comparative parameters, regardless of their comparability Size, must consider the conditions of contrast. In contrast, the consistency of organic matter maturity and the geochemical environment are important. The paper also clarifies the view that oil source contrast is treated as a unified sequence of genesis of hydrocarbon generation and evolution.