四环聚异戊二烯类化合物:中国东部断陷湖盆新分子化石

发布时间：2018-05-06 04:41

本文选题：四环聚异戊二烯类化合物(TPP) + 生物标志物　；参考：《沉积学报》2017年04期

【摘要】：渤海湾盆地海域断陷湖盆歧口凹陷古近系烃源岩及原油样品中,检测出丰富的四环聚异戊二烯类化合物。四环聚异戊二烯类化合物(C_(30)TPP)具有两个异构体,能有效地区分渤海湾盆地海域歧口凹陷沙三段(Es_3)烃源岩和沙一段(Es_1)烃源岩形成的混源原油,是湖相原油的油源对比研究中的新分子化石。四环聚异戊二烯类化合物与水体盐度之间有密切关系,沉积环境水体盐度越高,其丰度越高。随热演化程度增大,原油的四环聚异戊二烯类化合物(TPP)丰度逐渐降低。四环聚异戊二烯类化合物(TPP)具有湖相有机质输入的很强专属性,可用于判识湖相原油研究,在研究湖相沉积环境有机质的油源对比、沉积环境及热演化规律中具有重要地质—地球化学意义。
[Abstract]:Rich tetracyclic polyisoprene compounds were detected in Paleogene source rocks and crude oil samples of Qikou depression in Bohai Bay basin. The Tetracyclic polyisoprene compound CIM 30 (TPP) has two isomers, which can effectively distinguish the source rocks of the third member of the Sha formation in Qikou Depression, Bohai Bay Basin, and the mixed source oil formed by the source rocks of the first member of the sand. It is a new molecular fossil in oil source correlation study of lacustrine crude oil. There is a close relationship between tetracyclic polyisoprene compounds and water salinity, and the higher the salinity of sedimentary environment, the higher its abundance. With the increase of thermal evolution degree, the abundance of tetracyclic polyisoprene compounds (TPPs) of crude oil decreases gradually. Tetracyclic polyisoprene (TPP) has the strong specificity of lacustrine organic matter input, which can be used to identify the oil source of lacustrine oil, and to study the oil source comparison of organic matter in lacustrine sedimentary environment. The sedimentary environment and thermal evolution have important geological and geochemical significance.
【作者单位】：中海油研究总院;
【基金】：国家科技重大专项项目(2016ZX05024-002) 中国海洋石油有限公司勘探综合研究项目(2012-KT-11,2013-KT-09-05)~~
【分类号】：P618.13

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