四川盆地中西部地区上三叠统压力特征与油气运聚

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

1.
Changqing Oil field exploitation research institute, China petrol, Xi'an 710021, China
2.
Henan Oil field, No. 1 Petroleum production factory, China petro-chemical, Tongbai 744780, China
3.
Changqing Oil field company, No. 3 petroleum production factory, geology research institute, China petrol, Yinchan750006, China

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