DEEP BASIN GAS RESERVOIRS OF LATE PALAEOZOIC IN NORTHERN ORDOS BASIN

Li Kemin

doi:10.11743/ogg20020220

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DEEP BASIN GAS RESERVOIRS OF LATE PALAEOZOIC IN NORTHERN ORDOS BASIN
Vol. 23, Issue 2, Pages: 190-193(2002)
Online First：25 June 2002，

Published：2002
DOI： 10.11743/ogg20020220
稿件说明：

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DOI：

Li Kemin. DEEP BASIN GAS RESERVOIRS OF LATE PALAEOZOIC IN NORTHERN ORDOS BASIN[J]. 2002, 23(2): 190-193. DOI： 10.11743/ogg20020220.

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

是最具远景的勘探区域。

Abstract

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.