收稿日期: 2011-03-25
修回日期: 2011-09-15
网络出版日期: 2011-12-10
Model of Hydrocarbon Accumulation in Bi 304 Block of Biyang Sag
Received date: 2011-03-25
Revised date: 2011-09-15
Online published: 2011-12-10
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。
朱景修，张武，程文举，余志远，尹安，刘鹏 . 泌阳凹陷泌304区块油气成藏模式研究[J]. 天然气地球科学, 2011 , 22(6) : 1040 -1045 . DOI: 10.11764/j.issn.1672-1926.2011.06.1040
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 petroleum accumulation in the Bi 304 block was the later Liaozhuang structural uplift stage.We set up the hydrocarbon filling model based on the hydrocarbon accumulation features.The oil sources correlation shows that hydrocarbons sourced from deep source rocks were migrated through large fault into shallow nose structure and accumulated.As the nose structure was formed at later period,the earlier oil was lost or partially accumulated in a certain block.Large size oil was accumulated at later time.Thus,the model of hydrocarbon accumulation is an old generated- and new accumulated- hydrocarbon process.
Key words： Accumulation stage; Oil source; Accumulation model; Bi 304 block; Biyang sag.
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