Research Of The Dispensing Injection System Viscosity Loss Improvement Methods

Polymer flooding was conducted on the basis of water flooding development technology,is a kind of water-soluble polymer solution injected into reservoir oil displacement method.Due to increased the viscosity of the injected water,improve the mobility ratio,can effectively improve the displacing phase affected area,reduce the oil saturation,so as to improve oil recovery.Polymer solution viscosity is one of the important indexes affecting polymer flooding,the oil displacement effect is of great significance,thus proper measures must be taken to improve its initial viscosity and viscosity retention rate.At present,increasing the initial viscosity of polymer solution and the viscosity stability technology research mainly from two directions: add polymer viscosity stabilizer,polymer aqueous solution preparation into the innovation of technology and equipment.In this paper,aiming at ground system injection allocation technique of polymer mother liquid viscosity loss is bigger,affect the development effect of polymer injection,increasing the cost of production,carry out the ground preparation injection system viscosity loss technology research.Mainly the preparation,injection system tracing investigation each link groped change rule and influence factors of viscosity loss by physical and chemical methods such as investigation and analysis of compound injection system viscosity loss rule and influence factors,and combined with the actual problem,find the viscosity loss of reasonable measures,thus reducing polymer viscosity loss,ground injection allocation process construction has a guiding significance for the future.