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通过对断陷盆地主力生油岩中普遍存在的基碱性火山岩的分析,认为水下火山喷溢环境是优质生油岩赖以形成的主导因素。岩浆、火山的高温无机气液具有加温、加氢、催化作用,是生油岩有机质在浅埋藏的低成熟阶段形成油气的主要动力。这种沉积有机质在火山作用下形成的油气称为有机一无机混合成因的油气。重视油源岩系的火山活动研究,发展多源成烃学说,可以开拓油气勘探新领域。
Based on the analysis of perbasic alkaline volcanic rocks in the main oil source rocks of the fault depression basin, it is concluded that the underwater volcanic effusive environment is the dominant factor for the formation of high-quality source rocks. The magmatic and volcanic high-temperature inorganic gas and liquid have the functions of heating, hydrogenation and catalysis. They are the main driving force of the organic matter of the source rocks to form oil and gas in the low burial stage of shallow burial. This kind of sedimentary organic matter formed under the action of volcano is called organic-inorganic mixed hydrocarbon. Emphasis on research on volcanic activity of oil source rock series and development of multi-source hydrocarbon generation theory can open up new areas for oil and gas exploration.