阿姆河盆地侏罗系海相烃源岩地化特征及与中国海相烃源岩比较

发布时间：2018-01-10 12:06

本文关键词：阿姆河盆地侏罗系海相烃源岩地化特征及与中国海相烃源岩比较　出处：《沉积学报》2017年03期 　论文类型：期刊论文

【摘要】：阿姆河盆地上侏罗统海相烃源岩是一套公认的成熟烃源岩,其成熟度与中国古生界高—过成熟度海相烃源岩不同,通过对阿姆河右岸地区上侏罗统岩石样品的地球化学分析及与中国塔里木和华北、四川、吐哈、渤海湾等盆地类似烃源岩的比对,研究了阿姆河盆地成熟海相烃源岩地化特征,建立了有机质丰度与类型的评价标准与图版。结果表明:阿姆河盆地侏罗系存在灰岩和泥岩两类海相烃源岩,灰岩有机质丰度略高于塔里木盆地古生界和华北地台中上元古界灰岩,与四川盆地二叠系灰岩接近,泥岩有机质丰度与吐哈盆地侏罗系煤系泥岩相当,成倍好于塔里木盆地、华北地台海相泥岩;海相泥岩属于Ⅰ2~Ⅱ型烃源岩,海相灰岩属于Ⅲ~Ⅱ型烃源岩,综合分析认为:1)阿姆河盆地上侏罗统灰岩好烃源岩有机碳含量标准为0.5%,泥岩好烃源岩有机碳含量标准为3%;2)以低等生物为主的海相碳酸盐岩或泥岩,其可溶有机质氯仿沥青"A"族组分、Pr/Ph与Ph/nC_(18)关系、甾烷ααα(C_(27)、C_(28)、C_(29))-20R含量、多环芳香"三芴"系列等参数既揭示了烃源岩的生源环境,也是鉴别母质类型的良好参数。阿姆河盆地上侏罗统海相泥岩和灰岩烃源岩评价标准与图版的建立,对国外海相盆地油气资源评价具有重要意义。
[Abstract]:The Amu Darya basin, Upper Jurassic marine hydrocarbon source rocks is recognized as a mature source rocks, and the maturity of China high over maturity of Paleozoic marine hydrocarbon source rocks, the area of the right bank of the Amu Darya Upper Jurassic rock samples for geochemical analysis and China Tarim and North China, Sichuan, Turpan Hami, comparison the Bohai Bay Basin similar hydrocarbon source rocks, studied the characteristics of the Amu Darya basin mature marine source rocks, establishes the evaluation standard and chart of organic abundance and type. The results show that the existence of the Amu Darya basin limestone and mudstone of Jurassic two sea facies source rocks, limestone, organic matter abundance is slightly higher than that of spring in Tarim the basin in Paleozoic and Proterozoic in North China platform and the Sichuan basin near limestone, Permian limestone, mudstone of Jurassic organic matter abundance and Tuha basin of mudstone is better than double the Tarim Basin, North China Craton marine mudstone 2~; marine mudstone belongs to type II type hydrocarbon source rocks, marine limestone belongs to type II ~ III hydrocarbon source rocks, comprehensive analysis shows that: 1) the Amu Darya basin, Upper Jurassic limestone good hydrocarbon source rock organic carbon content standards for 0.5%, mudstone good hydrocarbon source rock organic carbon content standard of 3% to 2); as the main organism in marine carbonate rocks or mudstone, the soluble organic matter of chloroform bitumen "A" group, Pr/Ph and Ph/nC_ (18), alpha alpha alpha steran (C_ (27), C_ (28), C_ (29)) -20R content, "three polycyclic aromatic fluorene series etc. parameters not only reveal the source rocks from the environment, but also to identify the type of parent material of good parameters. The Amu Darya Basin Upper Jurassic to establish the standard and evaluation chart of mudstone and limestone source rocks of marine facies, has important significance for the evaluation of foreign marine basin oil and gas resources.

【作者单位】：辽宁工程技术大学;中国地质大学(北京)能源学院;中国石油勘探开发研究院;
【基金】：国家科技重大专项(2011ZX-05059) 国家大学生创新创业计划(201610147038)~~
【分类号】：P618.13
【正文快照】： 3.中国石油勘探开发研究院,北京100083烃源岩原始生烃潜力评价问题是影响油气勘探决策最基本的问题之一,烃源岩的有机质丰度、有机质类型是确定含油气盆地生烃潜力的主要参数,中国学者对国内古生界、元古界高—过成熟海相烃源岩进行了大量研究[1-5],确定了评价参数与标准[6-9]

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