现代地质2017，Vol.31Issue(5)：1046-1058,13.
火山岩风化壳储层特征及分布规律——以准噶尔西北缘中拐凸起石炭系火山岩为例
Reservoir Characteristics and Distribution Rule of Weathering Volcanic Crust: A Case Study of the Carboniferous Volcanic Rock in Zhongguai Uplift, NW Junggar Basin
摘要
Abstract
Weathering volcanic crust reservoir has become an important and new field of oil and gas exploration,its characteristics and distribution rule are of great important theoretical and practical significance to the oil and gas exploration in volcanic rocks.Through comprehensive research of well drilling,cores,logs,seismic and laboratory analyses,weathering volcanic crust reservoir characteristics and distribution rule have been comprehensively studied from the volcanic rock formation environment in Zhongguai uplift,Junggar Basin.The result shows that volcanic rocks formed in the island-arc environment,and lithology is mainly andesite and tuff.The weathering crust structure of volcanic rocks can be divided into four layers:weathered clay layer,strong weathered zone,weak weathered zone and dense non weathered zone.The strongly weathered zone is the best of the four-layer structures,which is the main reservoir development zone.Reserving space mostly contains secondary pores and fractures,and the fracture has a better effect on reservoir seepage capacity.The development of reservoir is affected by lithology and lithofacies,tectonic movement,weathering and leaching,and fault(fracture).Carboniferous system volcanic oil-gas is mainly distributed along the three zones(close to fault zone,structural high part zone,beneficial lithofacies development zone),one side (near the plane of unconformity).关键词
风化壳储层/石炭系火山岩/中拐凸起/准噶尔盆地Key words
weathering crust reservoir/Carboniferous volcanic/Zhongguai uplift/Junggar Basin分类
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范存辉,吴强,邓玉森,李虎,韩雨恬..火山岩风化壳储层特征及分布规律——以准噶尔西北缘中拐凸起石炭系火山岩为例[J].现代地质,2017,31(5):1046-1058,13.基金项目
构造与油气资源教育部重点实验室开放基金项目(TPR-2016-05) （TPR-2016-05）
天然气地质四川省重点实验室开放基金项目(2016trqdz01). （2016trqdz01）
