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Analyses of the characteristics of the hydrocarbon passage system and the hydrocarbon migration and accumulation modes of middle-up Jurassic in Fudong slope
Author(s): 
Pages: 29-32,112-113
Year: Issue:  4
Journal: Journal of Xi'an Petroleum Institute(Natural Scien

Keyword:  Fudong slopemiddle-up Jurassicnon-structural traphydrocarbon passage systemhydrocarbon migration and accumulation mode;
Abstract: The characteristics of hydrocarbon passage system and hydrocarbon migration determine the formation and the distribution of reservoirs.The hydrocarbon passage system and the hydrocarbon migration and accumulation process of the middle-up Jurassic non-structural reservoirs in Fudong slope are studied.It is held that they have three characteristics as follows:(1)the passage system is composed of three types of sand-body system,sandbody——fault system and sandbody-unconformity system;(2)the characteristics of palaeo-structure,formation pressure and palaeo-fluid potential show that Fudong slope,especially the Fu-5 region in south-east is favorable hydrocarbon accumulation region;(3)the hydrocarbon migration and accumulation mode of the non-structural traps in Fudong slope can be divided into two types,one is the lateral migration mode which presents in middle——north part of Fudong slope and be controlled by sandbody—unconformity system,and the other is the vertical migration mode which presents in south-east part of Fudong slope and be controlled by sandbody—fault system and sandbody—unconformity system.
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