泌阳凹陷泌304区块油气成藏模式研究

泌阳凹陷泌304区块浅层表现为由廖庄末期盆地整体抬升并发生反转而形成的开口倚邻边界大断层、由南东向凹陷倾没的断鼻构造。储层主要位于南部近岸水下扇沉积体系，为近岸水下扇扇根-扇中亚相，属中孔、中渗透性储层。根据与烃类流体包裹体相伴生的盐水包裹体的均一化温度，结合典型井的埋藏史、热演化史确定泌304区块成藏期次和成藏时间，油气成藏时期为廖庄末构造抬升期。深入分析该区块的油气成藏特点，建立成藏模式。油源对比表明油气来自深层，通过边界断裂运移至浅层鼻状构造聚集成藏，由于断鼻构造的形成时间较晚，早期小规模油气运移散失或局部成藏，晚期油气大规模运聚成藏，属于典型的古生新储次生油藏。

Model of Hydrocarbon Accumulation in Bi 304 Block of Biyang Sag

The shallow layer of BI 304 block is taken as a fault-nose formed by stratigraphical inversion at later Liaozhuang Period under function of basinal uplift,it contacted with the large fault of Kaikouyi.Reservoir provenance mainly came from the near shore subaqueous fan;it belongs to media-porosity,media-permeability reservoir.According to homogenization temperature of saline inclusion associated with hydrocarbons inclusion,burial history,and thermal history of typical well,we consider that the phase of petro...