新疆石油地质

新疆石油地质 ›› 2005, Vol. 26 ›› Issue (5): 520-524.

• 油气勘探 • 上一篇    下一篇

川西坳陷上三叠统含油气系统

曹烈1,2, 曾焱2   

  1. 1.成都理工大学,成都610059;
    2.中国石化 西南分公司 勘探开发研究院,成都610081
  • 收稿日期:2004-12-22 出版日期:2005-10-01 发布日期:2020-11-23
  • 作者简介:曹烈(1969-),男,重庆人,高级工程师,在读博士研究生,石油地质,(Tel)028-8351I559(E-mail)caclie3@163.com.

Petroleum System of Upper Triassic in West Sichuan Depression

CAO Lie1,2, ZENG Yan2   

  1. 1. Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    2. Research Institute of Exploration and Development, SouthwestBranch, Sinopec, Chengdu, Sichuan 610081, China
  • Received:2004-12-22 Online:2005-10-01 Published:2020-11-23

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摘要： 川西坳陷上三叠统沉积了 浅海-滨海、湖沼与河流相地层,蕴藏着丰富的油气资源,组成了以天然气为主的含油气系统。结合盆地模拟技术定量研究了川西坳陷的烃源岩生烃史、储集层致密化史,指出其生烃起始地质年代、生烃高峰、确定油气成藏关键时刻,重塑对应于生烃高峰期的生气量和储集层致密化前的适时古构造,确定油气运移和聚集区,阐述了含油气系统的定量化特征,对指导油气勘探有着重要的实际意义。

关键词: 四川, 含油气系统, 坳陷, 上三叠统, 模拟

Abstract: The deposits of shallw marine-littoral, lacustrine and fluvial facies of Upper Tiassic in west Sichuan depression occur with abundant oil-gas resources, which form a petroleum system dominated by natural gas. By using basin modeling technology, the hydrocarbon-generating history of source rocks and the compacting history of reservoirs in this depression are studied quantitatively. The started geologic age and peak reached period of hydrocarbon generation are pointed out. The determination of critical timing of hydrocarbon accumulation, including petroleum migration and accumulation areas, is made. The gas-generating quantity coresponding to the peak period and the paleostructure prior to reservoir compaction are restudied. Finally, the quantitative characteristice of the petroleum system are elaborated in this paper.

Key words: Sichuan, petroleum system, depression, Upper Triassic, simulation

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