THE GEOLOGICAL PROPERTIES OF NATURAL GAS AND EXPLORATION PROSPECTS OF UPPER PALEOZOIC IN TABAMIAO AREA, NORTH ORDOS BASIN
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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.
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Key words:
- Upper Paleozoic /
- natural gas /
- lithologic trap /
- exploration prospects /
- Ordos Basin
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[1] 袁志祥,李良,惠宽洋,刘树平.鄂尔多斯盆地北部天然气地质[M].四川成都:四川大学出版社,2000. [2] 闵琪,付金华,席胜利,等.鄂尔多斯盆地上古生界天然气运移聚集特征[J].石油勘探与开发,2000,27(4):26-29. [3] 傅诚德.鄂尔多斯深盆气研究[M].北京:石油工业出版社,2001.
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