| The project mainly study on numerical simulation of polymer flooding for Xing4-6 main Force area Oil layer. The geological model by Combination of FCM and Eclipse, it's controlled with sedimentary facies strictly,and completed the modeling work of PI1—PI332 in xing4-6 main Force area oil layer.it's base on the Establishment of three-dimensional three-phase geological model. And it use Eclipse polymer flooding simulator fit this block precisely. The indexes include geological reserves,pressure,water content in the total region,water content in south-north region, Water Content in a single well.in the process of fitting, tackifying and displacement effect of the polymers with different molecular weights in formation is mainly analyzed. The effect for polymers tackifying of sensitive factors such as injection rate,formation water salinity and the water-bearing content with residual resistance factor caused by polymer adsorption is also analyzed.on the basis of high precision history matching, these following research work were completed:⑴the study of oil displacement efficiency with polymer flooding in different slug. It mainly includes Comparative Evaluation of recovery percent with 640mg/l.pv or 875mg/l.pv.⑵the study of enhanced oil recovery by polymer flooding, The specific contents included: the effect of increase the produced quantity in different water cut to ultimate recovery,the optimization of separate layer water injection time, The Optimization of fracturing measures's combination mode and the optimization of fracturing time.⑶the study on cyclic flooding after polymer flooding.analysis through the research, further studies and corroborate on the EOR method.the contribution of optimum combination measures by polymer flooding to recovery factor.And it offer a theoretical basis to reasonable Exploitation and adjusting.
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