The influence of reservoir heterogeneity on oil field gas injection development is an important part of enhancing oil recovery.This paper evaluates the reservoir heterogeneity of three sets of sand bodies,which from Weizhou IV section of S well block in Weizhou A oilfield,combined with core flooding experiment and production performance,it is obtained that interlayer heterogeneity,plane heterogeneity and intraformational heterogeneity all have great influence on the gas injection development effect.When the interlayer heterogeneity and intraformational heterogeneity is strong,the gas injection well has uneven suction and the gas injection effect is poor.When the plane heterogeneity is strong,the injected gas displaces the oil along the high permeability channel,and the gas-oil ratio of producing wells on the high permeability channel rises quickly,the gas injection effect is poor.
维普
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