石油与天然气地质 ›› 1988, Vol. 9 ›› Issue (3): 306-313.doi: 10.11743/ogg19880314

• 论文 • 上一篇    下一篇

滇西景谷微型断陷盆地含油气性初步认识

赵泽恒, 王崇镐   

  1. 滇黔桂石油地质科学研究所
  • 收稿日期:1987-08-17 修回日期:1988-05-10 出版日期:1988-09-25 发布日期:2012-01-16

PRELIMINARY STUDY ON HYDROCARBON POTENTIAL OF JINGGU MICRO-TYPE FAULT-DEPRESSED BASIN IN WEST YUNNAN

Zhao Zeheng, Wang Chonggao   

  1. Institute of Petroleum Geology of Yunnan-Guizhou-Guangxi
  • Received:1987-08-17 Revised:1988-05-10 Online:1988-09-25 Published:2012-01-16

PDF (PC)

458

被引次数

2

摘要：

这是晚第三纪形成的一个微型地堑型断陷盆地,面积83km2。它的石油地质特征是:(1)沉积物厚 2400余米,油气源岩较厚;(2)有机质丰富,并已处于低成熟阶段;(3)生储盖配置关系良好,并存在若干有效的储油砂体。因此,在该盆地内发现小型油气田是有可能的。

Abstract:

A series of micro-type fault-depressed basins of the Late Cenozoic are distributed in west Yunnan Province. Each of them is less than 250 km2.Among them,there are four basins with an area of more than 80km2, sediment thickness greater than 1,000m. Now oil and gas have been discovered in theJinggu Basin. The Jinggu Basin, with an area of 83 km2, is a dustpan-like fault-depressed basin formed upon the folded basement of Early Tertiary. It containscoal-series strata of continental sand-mudstone with a thickness of more than 2,400m, and is characterized by: (1) great thickness of sediments and sourcerock; (2) source rock is rich in organic matter (organic carbon is 1.145%,chloroform bitumen A is 0.12%, total hydrocarbon is 1307 ppm), and hasreached lower matured stage (vitrinite reflectance Ro is 0.61-0.69%); (3)dis-posal relationship of generating, reservoiring and covering combination is good.