Structural Features And Oil-gas Distribution Of Main Abundant Hydrocarbons Depressions In Subei Basin

The target and sense of this paper can offer services to exploration activity, through understanding structural features, oil-gas distribution and the control of the structure on oil-gas in Subei Basin thoroughly. The types of Subei basin, the structural features of main abundant hydrocarbons depressions, the features and genetic mechanisms of structural trap assemblages and the characters of oil-gas distribution are chiefly studied in this work with applying comparative structural geology, analytic structural geology and Earth dynamics, the control of the structure on oil-gas is generalized, and then the exploration targets were found based on these analysis. There are five major conclusions: Deposition characters and combination characters of basin structural unit are significant discrimination criteria of basin types; New combination results of structural traps has been obtained; In main abundant hydrocarbons depressions main faults have strike-slip characters and control features of depressions; Guided by assemblage characters of structural traps and the oil-gas distribution law in Jinhu depression and Gaoyou depression, the favorable exploration targets are the structural traps on slope and the structural traps controlled by Fudong fault and its sub-faults. There are two innovations on discrimination criteria and assemblage characters of structural traps.