收稿日期: 2003-07-22
修回日期: 2003-11-17
网络出版日期: 2004-02-20
基金资助
国家“十五”攻关项目“济南坳陷复杂隐蔽油气藏地质评价和关键技术研究 ”(编号:2001BA605A09)资助.
ABNORMAL HIGH-PRESSURE OF EARLY TERTIARY IN DONGYING DEPRESSION AND ITS RESPONSE TO HYDROCARBON ACCUMULATION
Received date: 2003-07-22
Revised date: 2003-11-17
Online published: 2004-02-20
万晓龙;邱楠生,李亮,曾溅辉 . 东营凹陷古近系沙三段异常高压及成藏响应[J]. 天然气地球科学, 2004 , 15(1) : 95 -98 . DOI: 10.11764/j.issn.1672-1926.2004.01.95
Lithological reservoirs are developed in below abnormal hig h-pressure system, by analyzing character of the distribution of pressure of ea rly-Tertiary in Dongying Depression and its response to the lens' hydrocarbon a ccumulation. The distribution of abnormal high-pressure is in accord with sourc e-subdepression in plane on the whole. Pressure coefficient is higher in north region and lower in south region, which is correspond with the distribution of u ndercompaction region. The main factors, which led to Es3 abnormal high-p ressure in Dongying depression, are undercompaction and hydrocarbon generation. Hydrocarbon accumulation of lens reservoirs are controlled by the distribution o f abnormal high-pressure. Lens reservoirs, enveloped in dark mudstone, is mostl y distributed in relative low-pressure region. Microfracture and episodic expul sion hydrocarbon of mudstone are generated by pressure difference between mudsto ne and lens. Sandstones have relative high fluid pressure after hydrocarbon filling.
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