四川盆地中西部地区上三叠统压力特征与油气运聚

收稿日期: 2003-10-05

修回日期: 2004-02-16

刊出日期: 2004-06-15

Pressure features of Upper Triassic series of middle-west Sichuan basin and the assemble of oil and nature gas

Received Date: 05 October 2003

Revised Date: 16 February 2004

Publish Date: 15 June 2004

摘要: 通过实测压力数据、泥岩声波压实研究、古压力恢复研究,对川西、川中地区异常压力在纵向、横向上的分布特点的分析,认为该区异常压力分布有明显的分区性;同时,依据异常压力的孕育史模型,恢复本地区的上三叠统古压力的形成与演化历史,认为上三叠统过剩压力高峰出现过两次,分别在晚侏罗世末和早第三纪末;最后分析了该区异常压力与油气运聚的关系。
- 四川盆地 /
- 异常压力 /
- 声波时差 /
- 油气运聚
Abstract: Ba sed on the study of the test pressu redata,the acoustic time and the recon strction of paleo-formation pressure,through the study of abnormal pressure in the middle and western Sichuan basin,it's shown that the distribution of stratum pressure differs greatly in different zones;the evolution history of paleo-formation pressure has been restored according to the models of the evolution history of pressure, and it shows that there were two high pressure a rouse,the firsta rouse in later Jurassic and the second in erlier Triassic,analyzing the relations between the excessive pressure distribution and the petroleum migration.
- Sichuan basin /
- abnormal prssure /
- acoustic time /
- petroleum migration