收稿日期: 2009-05-06
修回日期: 2009-07-20
网络出版日期: 2010-02-10
基金资助
国家基础研究计划项目（编号:2007CB209503）资助.
Origin of Jurassic Hydrocarbon and Accumulation Model in Santanghu Basin
Received date: 2009-05-06
Revised date: 2009-07-20
Online published: 2010-02-10
通过三塘湖盆地基本地质条件、烃源岩特征、油气特征和来源分析，结合构造、地层特征，建立了侏罗系油气藏成藏模式，分析了油气成藏的主要控制因素。认为三塘湖盆地侏罗系的油气主要来自二叠系芦草沟组烃源岩，也有三叠系和部分侏罗系烃源岩的贡献，有些天然气与侏罗系的关系非常密切。由于储集层与烃源岩的空间配置关系以及构造位置的不同，存在不同的成藏模式，总体以古生新储式成藏为主，自生自储式油气成藏规模较小。烃源岩不直接控制油气藏的分布，但在一定烃源岩分布范围内，好的储集层与一定的背斜形态、断裂的配置有利于成藏，单纯的单斜背景对侏罗系油气的聚集不是很有利。
高岗, 李华明, 梁浩, 焦立新 . 三塘湖盆地侏罗系油气来源与油气成藏模式[J]. 天然气地球科学, 2010 , 21(1) : 18 -25,61 . DOI: 10.11764/j.issn.1672-1926.2010.01.18
Here we establish a model of Jurassic hydrocarbon accumulation in Santanghu basin and propose control factors of the petroleum accumulation by analyzing the geological background(i.e.structure,stratigrapgy),the distribution of source rock and the origin of hydrocarbon.The Jurassic petroleum mainly comes from the source rock of the Permian Lucaogou Formation,the other part from those of Jurassic and Triassic,and a little natural gas was derived from the Jurassic source.According to tectonic location and space distribution relationship between source rock and pool,hydrocarbon was accumulated in different ways,mainly in old formation and new accumulation,and a few of small size pools in self generation and self reservoir manner.Although the source rock does not constrain the distribution of petroleum pools,the dominant control factors of hydrocarbon accumulation in the area of source rock distribution include good reservoir,anticline and fault.But it is unfavorable of layer monocline to hydrocarbon accumulation.
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