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
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.
Zhu Jing-xiu,Zhang Wu,Cheng Wenju,Yu Zhiyuan,Yin An,Liu Peng . Model of Hydrocarbon Accumulation in Bi 304 Block of Biyang Sag[J]. Natural Gas Geoscience, 2011 , 22(6) : 1040 -1045 . DOI: 10.11764/j.issn.1672-1926.2011.06.1040
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