Title: The Structure-Sedimentation Model and Reservoir Forming of Little Half-Graben Basin:A Case Study of Guanzhen Subsag in Northern Jiangsu Basin
Abstract: Guanzhen subsag is a half-graben basin,located in the middle of Hongze sag in northern Jiangsu Basin.From south to north,it consists of four structure zones: abrupt slope zone,deep sag zone,fault zone and gentle gradient zone.In it,there are five sedimentary systems: meandering stream's delta,shore shallow lake,deep lake,alluvial fan(fan delta) and subaqurous fan.The meandering stream's delta sedimentary system is located in gentle gradient zone,the deep lake sedimentary system,in deep sag zone and the alluvial fan(fan delta)-subaqurous fan sedimentary system,in abrupt slope zone.Also there are two integrated patterns of sedimentary systems: subaqueous fan-deep lake-meandering stream's delta,alluvial fan(fan delta)-shore shallow lake-little delta.At the sedimentary time of Funing system,the hydrocarbon origin rock,at the sedimentary time of Dannan system,may be favorate for the formation of a big fan delta.Hence,it is possible for the subtle reservoir to form between the two integrated patterns of sedimentary systems.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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Cited By Count: 2
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