天然气地球科学 ›› 2007, Vol. 18 ›› Issue (2): 219–223.doi: 10.11764/j.issn.1672-1926.2007.02.219

• 天然气地质学 • 上一篇    下一篇

沉积盆地超压形成机制及其对油气运聚成藏过程的影响

万志峰1,2,夏 斌1,何家雄1,刘宝明1,3   

  1. (1. 中国科学院边缘海地质重点实验室,广东 广州 510640;2.中国科学院研究生院,北京 1 00049;3.中国海洋石油研究中心,北京 100027)
  • 收稿日期:2006-12-31 修回日期:2007-03-14 出版日期:2007-04-10 发布日期:2008-06-20
  • 通讯作者: 万志峰wzf@gig.ac.cn. E-mail:wzf@gig.ac.cn.
  • 作者简介:万志峰(1981-),男,湖北应城人,硕士研究生, 主要从事石油地质与海洋地质研究.
  • 基金资助:

    中国科学院知识创新工程重要方向项目(编号:KZCX3-SW-234-3;KZCX2-YW-203) 联合资助.

FORMATION MECHANISM OF OVERPRESSURE AND ITS INF LUENCE ON HYDROCARBON ACCUMULATION IN SEDIMENTARY BASINS

WAN Zhi-feng1,2,XIA Bin1,HE Jia-xiong1,LIU Bao-ming1,3   

  1. (Key Laboratory of Marginal Sea Geology, Chinese Academy of Sciences, Guangzhou 510640, China)
  • Received:2006-12-31 Revised:2007-03-14 Online:2007-04-10 Published:2008-06-20

摘要:

超压在全球沉积盆地分布广泛,超压对油气勘探具有重要的意义。超压形成机制主要分为3类:①与应力有关的生压作用;②地层孔隙流体体积增大引起的生压作用;③流体流动和浮力的增压作用。指出超压不仅能改善深部储层的储集性能,增加其上覆盖层的封盖能力,而且是油气运移聚集的重要动力,能够加快和促进油气幕式运聚成藏,但是,对超压的形成机制和意义还存在一些争议,诸如超压对有机质生烃的具体影响和幕式成藏的周期性等问题,尚待进一步深入研究。

关键词: 超压盆地, 形成机制, 超压作用, 油气成藏

Abstract:

Overpressured sedimentary basins are widespread and have great significance on hydrocarbon exploration. There are there types of formation mechanisms of overpressure: ①the influence of stress, ②the increases of porose fluid volume, ③liquid flowage and buoyancy. Overpressure improves the porosity and permeability of reservoirs. And it strengthens the sealing for hydrocarbon. There are still many problems to resolve, such as the influence of overpressure on the generation of hydrocarbon and the circle of episodic fluid expulsion. Further researches are needed on these issues.

 

Key words: Overpressured basin, Formation mechanism, Overpressure, Hydrocarbon accumulation

中图分类号: 

  • TE121

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