摘要
鄂尔多斯盆地晚古生代整体抬升 ,形成了稳定的大型区域斜坡 ,为深盆气的形成提供了必要的构造条件 ;其太原组、山西组煤系地层具有良好的生气条件 ,为深盆气的形成奠定了物质基础 ;太原组、山西组及下石盒子组的砂体厚度大、分布广 ,且岩性致密 ,为深盆气的形成起到了决定性作用。深盆气藏在伊陕斜坡及天环凹陷一带以产气为主 ;晋西断褶带至西缘断褶带气水同产 ;在伊 12井至哈 2井一带则以产水为主。伊陕斜坡及天环凹陷的主体均处于深盆气藏的含气带内 ,储量丰度高 。
A large stable regional slope formed by the process of uplifting of Ordos basin as whole during Late Palaeozoic Era provided necessary structural conditions for the generation of deep basin gas.With good gas-genetic conditions,coal measure strata in both Taiyuan Formation and Shanxi Formation laid a foundation materially for the generation of deep basin gas;With great thickness,widely distribution and tight lithology,sandbodies in Taiyuan Formation,Shanxi Formation and Lower Shihezi Formation are decisive factors for generating deep basin gas.Gas reservoirs along Yishan slope and Tianhuan depression mainly produce gas,while western Shanxi fault fold belt to west edge of fault fold belt produce both gas and water,No.12 Yi Well to No.2 Ha Well produce water only.Located in gas-bearing belt of deep basin reservoir and with rich abundance,the main body of Yishan slope and Tianhuan depression will be the most potential for gas exploration.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2002年第2期190-193,共4页
Oil & Gas Geology
关键词
深盆气
形成条件
含气带
勘探领域
晚古生代
鄂尔多斯盆地
deep basin gas
genetic conditions
gas-bearing belt
exploration era
Late Plaeozoic
Ordos basin
