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The Origin,Reservoir Formation Mechanism and Exploration Prospect of Deep-basin Gas

Wang Yutao(Research Institute of Exploration and Development,Xinjiang Oilfield Company,SINOPEC,Xinjiang 834000 P.R.China),Cao Qing and Li Baomin et al.  
As a type of unconventional natural gas resource,the deep basin gas has its own unique origin and reservoir formation mechanism.This paper summarized the geological law of deep basin gas generation and enrichment and proposed that the foreland basin is a favorable region for deep basin gas accumulation.The humic type organic matter is the main source of deep basin gas.Gas water inversion is the dominant pattern of the deep basin gas accumulation.Meanwhile,the paper also made some discussions on the deep basin gas resource evaluation.Finally,combining with the facts of Junggar Basin,the author analyzed the geological conditions of deep basin gas formation and suggested that the Jurassic North Tianshan Piedmont Depression is the favorable area for deep basin gas exploration.
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