Research On Reasonable Injection And Production Parameters In Polymer Flooding Follow-up Water Flooding

Polymer flooding technique and various allied technique have been gradually improved. Besides, the scale of polymer flooding is getting bigger year by year. Therefore, polymer flooding has been the key technique support for maintaining high production and improving the level of oil-field development for Daqing oilfield in later high water-cut stage. With becoming mature of the polymer flooding technique and increasingly improving of the mating technique as well as increasing of the polymer flooding scale year by year, the polymer flooding has become technical support for oil filed extended high rate.BeiSan-XiXi block has been experienced three displacement technology development including natural energy flooding, water flooding and polymer flooding. Aswith the implementation of polymer flooding mining technology in this block, underground crude oil had higher recovery with the more uneven distribution for remaining oil and exploiting oil is exploitation become more difficulty.This paper is based on the geological parameters such as effective thickness, permeability, porosity and oil saturation of BeiSan-XiXi block, combying of dynamic polymer flooding actual production data, monitoring data Sabei development area in Daqing Oilfield, by numerical simulation, we have researched polymer flooding distribution of the remaining oil, and established injection and production parameters adjustment technology boundaries. Basing on the geological parameters such as effective thickness, permeability, porosity and oil saturation of BeiSan-XiXi block, associating dynamic polymer flooding actual production data, monitoring data and the measure of injector producer, this paper researched polymer flooding distribution of the remaining oil, and established injection and production parameters adjustment technology boundaries by numerical simulation.With applying of principles of profit and loss, according to production, costs and profits, set up economic technology boundary model for water shutoff of production well and shut in, and gave reasonable economic technology boundary for water shutoff and shut in when the price of oil and costs are different...