Research On Numerical Simulation Of Tracking Polymer Injection Adjustment In Gao Ⅱ 1-18 Reservoir Of La 8-182 Well Group

Big water-flooding thickness and level, big differences between different area are the obvious points in GaoⅡ1-18 reservoir of La8-182 well group. Because the paradox between intervals and plane, and under the situation of faulty well network and injection-production system, GaoⅡ1 -18 production interval has much remaining oil. For the GaoⅡ1-18 oil interval's speciality, after getting the detail geology documents, the 3-dimensional geology model is constructed by Petrel and applying the method of phase and rock controlling. Then the FloGrid is used to pretreat the model aimd to generate the model which Eclipse needs, and the research is done on remaining oil distributing and generating reason on the detail history matching.Estimate producing conditon of every kind of production intervals because that in La8-182 well group inject polymer of 9.5 million molecular weight, concentration of 1200mg/L,the iMprovement of recovery value is lower.Analyse the kye reason of the cause of the residual oil. Look for the influence of different injection concentration, molecular weight,injection velocity,producing times to the final recovery ratio and every interval degree of reserve recovery.Analyse chiefly the influence of molecular weight,adjusting time,injection concentration to every different producing interval producing condition with different molecular weight,different injectiton concentration and injection pressure.Analyse the influence of adjusting time,injection concentration to the producing condition, coMpare different develop programs,and decide the better reasonable polymer driving parameter.