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从原油中分析出孢粉、菌、藻化石,是近些年来发展较快的孢粉研究领域之一。孢粉等由于体积小、比重轻、孢粉壁不易被氧化,而且原油具有一定的粘度,故油气在其运移过程中往往将生油岩中的孢粉、菌、藻化石带进油藏,因此原油孢粉化石司以用来追踪油气运移,查明油源,判断生油岩时代和生储盖组合类型。下第三系为苏北盆地的主要含油地层,几年来我们分析研究了苏北盆地的真武地区、金湖地区、戴南地区、天长地区的九口井原油样品,获得了相当数量的孢粉、菌、藻化石,为研究油气运移,查明油源提供有用的资料。
Analysis of crude oil from the sporopollen, bacteria, algae fossils, is one of the areas of rapid development of sporopollen in recent years. Due to its small volume and light weight, the sporopollen wall is not easily oxidized, and the crude oil has a certain viscosity. Therefore, oil and gas often bring pollen, bacteria and algae fossils into the reservoir during their migration Therefore, the crude sporopollen fossil was used to track the migration of oil and gas, identify the source of oil, determine the age of the source rock, and the type of reservoir-cap assemblage. The lower Tertiary is the major oil-bearing formation in the Northern Jiangsu Basin. In the past few years, we analyzed and analyzed crude oil samples of nine wells in Zhenwu, Jinhu, Dainan and Tianchang areas of the Subei Basin, obtaining a considerable amount of sporopollen , Bacteria, algae fossils, for the study of hydrocarbon migration, oil source to provide useful information.