四川盆地油气藏主要特征

ON THE CHARACTERISTICS OF THE OIL/GAS POOLS IN THE SICHUAN BASIN

向鼎璞

Xiang Dingpu

四川石油管理局地震资料处理解释中心, 成都 610212

Interpretation Center of Seismic Data Processing, Sichuan Bureau of Petroleum Administration

四川盆地按构造型式可分为川东、南高陡构造区,川中平缓及低缓构造区,川西北低缓及陡构造区。盆地内有巨厚的沉积层(以海相碳酸盐岩为主),有多种成因类型的油气。目前在震旦系灯影组,中、下奥陶统,志留系,中石炭统,下二叠统,上二叠统长兴组,中、下三叠统,上三叠统,中、下侏罗统等均发现工业性油气流。盆地内的油气藏类型复杂多样,并具独有的特点。现巳证实四川盆地为我国天然气的重要产区,具较为广阔的勘探前景。

The Sichuan Basin can be divided into the high-scarp structural zone in east and south Sichuan,the flattish and low-flattish structural zone in central Sichuan and the low-flat-tish and scarp structural zones in northwest Sichuan depending on the structural types.In the basin,the thick sequences of Sinian-Middle and Lower Triassic systems deveploped mainly with marine carbonate rocks and the Upper Triassic-Middle and Lower Jurassic non-marine sequences.In these sequences,the commercial oil/gas has been discovered with various types of oil/gas pools and the unique characters respectively.Up to date,however,it is proved that the Sichuan Basin is one of the most important natural gas production areas in China with bright oil/gas prospects.

https://doi.org/10.11781/sysydz199204359