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机构地区:[1]中国地质科学院矿产资源研究所,国土资源部盐湖资源与环境重点实验室,北京100037
出 处:《科技导报》2016年第5期53-59,共7页Science & Technology Review
基 金:国家自然科学基金项目(U1407207);中国地质调查局地质大调查项目(12120114048501)
摘 要:世界上许多大型含油气盆地都有蒸发岩分布,蒸发岩与沉积盆地的含油气性有着非常密切的关系。为了探讨蒸发岩对沉积盆地含油气性的影响,本文通过大量文献调研。分析表明:泻湖和盐湖环境的生物种群可以作为烃源岩最好的母质;而蒸发岩盆地在独特的太阳池效应的作用下,有机质可以有效地转化为烃源岩;蒸发岩的储集性及其可塑性和流动性为油气储的运移和聚集提供了良好的通道;蒸发岩良好的封闭能力为油气的赋存提供了很好的圈闭。明确了蒸发岩对沉积盆地的含油气性控制机制。Many of the world's large basins have evaporite distributions, and evaporite has a very close relationship with the capability of sedimentary basin. In order to clarify the influence of evaporite on the capability of sedimentary basin, this paper, through a large number of literature analysis, argues that lagoon and salt lake environment species can be used as the best parent material of hydrocarbon source rocks, and that under the unique action of "solar pool effect" in the evaporite basin, the organic matter can be effectively converted into hydrocarbon source rocks. It is analyzed that reservoir of evaporite considering its plasticity and liquidity can provide a good channel for the migration and accumulation of oil and gas. Also discussed is that the good sealing capacity of evaporite may provide a good trap for oil and gas occurrence. Eventually, the control mechanism of evaporite oiliness in sedimentary basin is pointed out.
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