海相油气地质2016，Vol.21Issue(2)：29-38,10.DOI:10.3969/j.issn.1672-9854.2016.02.004
鄂西渝东及邻区寒武系盐下层烃源演变特征
Evolution Characteristics of Cambrian pre-Salt Hydrocarbon Source in Western Hubei-Eastern Chongqing Area and Adjacent Area
胡晓凤 1冯畅 2丁青 1郭战峰 1盛贤才 1可东 1吉婧1
作者信息
- 1. 中国石化江汉油田分公司勘探开发研究院
- 2. 长江大学
- 折叠
摘要
Abstract
Overburden by wide-distributing Middle Cambrian Qinjiamiao salt rock, both Lower Cambrian Shilongdong and Upper Sinian Dengying hydrocarbon-bearing reservoirs are the important exploration targets in the western Hubei-eastern Chongqing area and adjacent area. However, it has been doubtful to the fact if the hydrocarbon in these reservoirs derived from both the Lower Sinian Doushantuo and the Lower Cambrian Tianheban-Niutitang source rocks because of their high t hermal evolution. According to the effect analysis of replaceable gas source, it is shown that the high-matured to over-matured hydrocarbon kitchens are of the pre-Indosinian kerogen-pyrolyzed and Indosinian-Yanshanian oil-pyrolyzed hydrocarbon sources. The fluid behavior tracking to C , O and Sr stable isotope marks supports the theory of continual y filling of multi-period hydrocarbon sources which provide greatly huge amounts of hydrocarbon. By account, the effective hydrocarbon amounts can reach to 15,554.89×109m3 in Dengying reservoir and 58,925.576×109m3 in Shilongdong reservoir respectively, which means that there is good gas resource potential in the western Hubei-eastern Chongqing area.关键词
震旦系/寒武系/盐下油气藏/烃源岩/烃源灶/有机地球化学特征/鄂西地区/渝东地区Key words
Sinian/Cambrian/pre-Salt reservoir/Source rock/Hydrocarbon kitchen/Organic geochemistry charac-teristics/West of Hubei/East of Chongqing分类
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胡晓凤,冯畅,丁青,郭战峰,盛贤才,可东,吉婧..鄂西渝东及邻区寒武系盐下层烃源演变特征[J].海相油气地质,2016,21(2):29-38,10.
