Injection Pressure Design Calculation of Polymer Flooding

According to engineering fluid mechanics and seepage mechanics,the calculation model of polymer flooding injection pressure was establishment and the calculation steps was given.Taking certain polymer injection well as an example,the injection pressure calculation during polymer injection was carried out by steps.The result shows that polymer injection pressure includes overcoming injection friction and the pressure needed to flow in porous media,the most injection pressure loss is during formation seepage,perforation tunnel in turn and the floor horizontal flow is the least.