Quantitative description and simulation of preferential migration passage in loose sandstone reservoir

At late periods of the loose sandstone reservoir development,preferential migration passage is universal.While at present,the quantitative description method for preferential migration passage is rare and it cannot meet the needs of remaining oil fine tapping research status.In full consideration of reservoir dynamic and static data,the fuzzy comprehensive evaluation method for quantitative description and simulation has been put forward.In reference with single well point of preferential migration passage,development index and sand production volume,the conduction coefficient and the effective seepage pore volume can be amended,and it can realize the quantitative simulation of preferential migration passage.The application results show the effect of preferential migration passage development on fluid seepage flow,and the method provides basis for fluid movement of preferential migration passage and fine tapping of remaining oil.