High Concentrations Of Viscosity Polymer In The Research Of Oil Displacement Mechanism Of The Microsopic Pores

The Daqing Oil Field industrialization promotion drives using the polymer compared tothe water drive to enhance about recovering10%. The highly concentrated polymer drives theoil field test, enhances the recovery ratio value to be possible to achieve above20%.Enhanced oil recovery rate close to or exceed the level of ASP. But enough to study onmicroscopic displacement mechanism of the system, especially in high density visco-elasticpolymer oil displacement mechanism of micro-pores is still in the exploratory phase. Thisproject studies the theory is based on polymer oil displacement mechanism, according to thehigh concentration of viscoelastic polymer solution in reservoir under the condition of fieldstudy results, think high density visco-elastic polymer has a higher degree of macro-sweepefficiency and displacement efficiency, significant displacement of the remaining oil in thepores.Study of this paper is in viscoelastic polymer on porous media based on the study on themechanism of oil, by micro-CT experimental equipment for Visual simulation of high densityvisco-elastic polymer micro-pore percolation process in microscopic oil displacementefficiency of flow characteristics and its influence. Study on high-concentration polymer indifferent types of water and mixed under the conditions of the wettability of cores, ofhigh-concentration polymer viscoelastic effects on oil displacement efficiency. The study ofits research to further deepen and improve research on microscopic percolation theory ofpolymer flooding, helps greatly enhanced oil recovery after polymer flooding in oilfieldapplication standardization of methods, more effective and more economical developmentand exploitation of oil and mineral resources, keep the oil level, high efficiency, sustainabledevelopment, important actual strategic significance. Research on this subject is a challengeto conventional polymer theory, further deepen and improve research on microscopicpercolation theory of polymer flooding, be of great academic value.