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鄂尔多斯盆地北部塔巴庙地区上古生界天然气地质特征与勘探前景
石油实验地质
2003年 25卷 第6期
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Title
THE GEOLOGICAL PROPERTIES OF NATURAL GAS AND EXPLORATION PROSPECTS OF UPPER PALEOZOIC IN TABAMIAO AREA, NORTH ORDOS BASIN
Authors
MENG Jun-tian
JIA Hui-chong
单位
西北大学, 地质系, 陕西, 西安, 710069
2. 中国石化, 华北分公司, 勘探开发研究院, 河南, 郑州, 450006
Organization
Department of Geology, Northwest University, Xi'an, Shanxi 710069, China
2. Research Institute of Exploration and Development, North China Branch, SINOPEC, Zhengzhou, Henan 450006, China
摘要
塔巴庙地区区域构造上隶属于鄂尔多斯盆地伊陕斜坡.太原组和山西组的煤层和暗色泥岩具有较好的生烃能力.山西组和下石盒子组河流、三角洲砂体和太原组潮道砂体是主要的储集岩体;纵向上发育的多套生储盖组合为天然气富集成藏提供了有利条件.塔巴庙区块上古生界天然气资源量为6174×108m3,目前的探明率仅为11%,因此上古生界天然气勘探前景十分广阔.综合研究认为,塔巴庙地区上古生界气藏储层物性受控于沉积微相类型,岩性圈闭是该区上古生界气藏勘探的主要类型.
Abstract
Tabamiao area is situated in Yishan slope of Ordos Basin.The coal and dark mudstone beds in Taiyuan and Shanxi Formations possessed favourable hydrocarbon generation ability.Sandbodies which deposited in river channels,fan deltas and tidal flat are main reservoirs.Multiple source-reservoir-cap assemblage in vertical provided favourable condition for gas pool forming.The natural gas resource of Upper Paleozoic in Tabamiao area is up to 6 174×108m3 and its proved rate is only 11% at present.Therefore,the Upper Paleozoic in Tabamiao area is favourable for gas exploration.It is considered that the reservoir characteristics was controlled by the sedimentary microfacies and the future exploration should be focused on search for lithologic traps in Tabamiao area.
关键词：
上古生界;
天然气;
岩性圈闭;
勘探前景;
鄂尔多斯盆地;
Keywords:
Upper Paleozoic;
natural gas;
lithologic trap;
exploration prospects;
Ordos Basin;
基金项目
国家"九五"重点科技攻关项目(99-110-03-04).
DOI
https://doi.org/10.11781/sysydz200306708
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