Experimental Study on the Characteristics of Air Foam Displacement After Water Flooding
When the oil field is in the period of ultra-high water cut,the traditional oil recovery technology cannot keep high and stable production,the oil recovery rate decreases and the cost increases.Air foam displacement is an organic combination of air displacement oil recovery technology and foam displacement oil recovery technology,which can solve the problems such as the decline of recovery efficiency in the late stage of traditional oil recovery and has a good application prospect.In this paper,the change of seepage field of air foam displacement under different permeability is studied by using sand-filled pipe device.The results show that the higher the permeability,the better the effect of air foam displacement.Plugging in the middle part of the air foam displacement process will lead to great pressure changes.Numerical simulation shows that air foam flooding has three stages:start-up,displacement and breakthrough,and displacement is the key stage of EOR.The research results can provide reference for air foam displacement in the middle and late period of oil field.
air foam floodingsand filled pipe simulationrecovery factorseepage characteristicsnumerical simulation
万方数据
维普
