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天然气地球科学 ›› 2010, Vol. 21 ›› Issue (1): 54–61.doi: 10.11764/j.issn.1672-1926.2010.01.54

• 天然气地质学 • 上一篇    下一篇

下扬子区下组合烃源岩热演化及有效性研究

曾萍   

  1. 中国石化勘探南方分公司研究院，四川 成都 610041
  • 收稿日期:2009-05-27 修回日期:2009-09-16 出版日期:2010-02-10 发布日期:2010-02-10
  • 通讯作者: 曾萍Celia.g@163.com. E-mail:Celia.g@163.com.
  • 作者简介:曾萍(1965-),女,高级工程师,博士,主要从事海相油气地质勘探和构造地质方面的研究工作.
  • 基金资助:

    中国石化股份公司科技开发部“扬子区下组合油气成藏条件及目标优选”科研项目(编号：P05007）资助.

Thermal Evolution and Effectivity of Source Rocks of the Lower-Paleozoic in Lower Yangtze Region

ZENG Ping   

  1. Geological Research Institute of Exploration, Southern Company of SINOPEC,Chengdu 610041,  China
  • Received:2009-05-27 Revised:2009-09-16 Online:2010-02-10 Published:2010-02-10

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摘要：

下扬子区是南方海相具有油气勘探远景的地区之一。应用新增的勘探资料，采用新的技术方法，结合野外、室内综合研究，分析烃源岩构造—热演化。研究结果表明，晚印支—早燕山期，下扬子区的构造运动以逆冲推覆为主，大部分地区遭到抬升剥蚀，部分地区下古生界烃源岩抬升后晚期没有再度深埋，保留了印支期的热演化状况，因此下古生界高成熟腐泥型烃源岩现今仍具有一定的生烃潜力。在演化程度普遍较高的下扬子区下古生界，找到局部热演化程度相对较低，具有油气勘探前景的地区和层位是可能的。

关键词: 下扬子地区, 下组合, 构造热演化, 烃源岩, 有效性

Abstract:

Lower Yangtze Region is one of the marine facies regions which present petroleum exploration prospects in southern China. Using new exploration information and technology methods, we analysed the tectonic-thermal evolution of source rocks of the lower-Paleozoic by field and experimental methods. Results show that obduction and napper were main tectonic movements in late Indosinian-early Yanshan period of Lower Yangtze Region, and most areas were elevated and denudated. Source rocks of lower-Paleozoic in some areas did not deep bury renewedly, and remain the Indosinian thermal evolution state. Therefore the high  maturity sapropelic organic matter of lower-Paleozoic has still possessed hydrocarbon generation potential. So it is possible to find layers and areas with hydrocarbon potential, of which source rocks have relative lower thermal evolution, in lower-Paleozoic Lower Yangtze Region.

Key words: Lower Yangtze Region, Lower-Paleozoic, Tectonic-thermal evolution, Source rocks, Effectivity

中图分类号: 

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