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Features of oil-gas reservoir generated by fault-lithologic body

He Dengfa (China University of Geosciences,Beijing 100083,China)  
Fault is a chief factor for affecting oil-gas reservoir formation.The lithologic bodies such as alluvial fan,fan-delta,reef and bio-bank are the main oil-gas reservoir bodies.When the fault is connected with the lithologic body,the fault-lithologic body oil-gas reservoir will be generated.The study on Junggar Basin showed that the fault and lithologic body became the trap elements and resulted in the dominant type of oil-gas pools in Junggar Basin.The fault activities controlled the basic features of pool formation in the basin.The fault combination style moderately influenced the migration,accumulation,distribution and abundance of oil and gas.The faulting phases strongly influenced the oil-gas migration and accumulation period and the style of pool formation.The Chepaizi-Mosuowan paleo-uplift in the interior of the basin provided the elementary environment for the development of the stratigraphic traps and the fault-lithologic traps to a large extent.The two flank slopes of the paleo-uplift are the favorable area for generating the lithologic and stratigraphic oil reservoirs.The southeast flank slope is the best area.
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