Model Development for Micellar/ Polymer Flooding Process

Abstract

Flow of hydrocarbon from the reservoir is a function of pressure differential provided by natural reservoir energy at initial stage of production. The pressure declines over time with a corresponding reduction in production rate. To salvage for this, polymer/micellar flooding a chemical method deployed to enhance the recovery of oil from the reservoir. The key point here is to improve overall sweep efficiency. In this work, the reservoir was produced using a polymer injection well and analysis were made using a time step of 1 day over 100 days of production period. Simulation using Eclipse 100 result shows that similar cells in terms of relative permeability reduces with increasing polymer concentration and relative distance from the injector. The field performance in this work was analyzed in terms of production rate, field pressure, and saturation. Peak pressure value of 4470Psia was reached at the day 75 with peak oil production rate of 205STB/Day at day 68 with a continuous decline in oil saturation. Sensitivity study was performed in terms of polymer adsorption/injection rate in relation to time, polymer injection rate/oil production rate against time, fluid oil rate/field pressure against time. The overall result shows that the polymer adsorption weakens the interfacial tension of the in-situ of oil phase.