Surfactant Concentration Optimization in Alkaline Surfactant Polymer Flooding to Maximize Recovery Factor Using Reservoir Simulation Method
Rayhan Irvan1,a), M. Taufiq Fathaddin1,b), R. Hari Karyadi Oetomo1,c) and Shabrina Sri Riswati1,d)

Department of Earth and Energy Technology, Universitas Trisakti, Jakarta, Indonesia

Abstract

Enhanced Oil Recovery (EOR) is the method to increase the recovery factor of oil, one of them is by injecting chemicals into the reservoir, in this case surfactant. In this research, the data was taken from laboratory experiment, and then reservoir simulation was performed to match the oil recovery factor from the experiment. The purpose of simulating laboratory experiment is to find out the surfactant concentration which yields to optimum oil recovery factor. The research method involves varying the surfactant concentration- 0%, 0.5%, 0.15%, 0.25%, 0.35%, 0.45%. Concentration of 0% surfactant, yields to recovery factor of 18.96%. Concentration of 0.5% surfactant, yields to recovery factor of 73.794%. Concentration of 0.15% surfactant, yields to recovery factor of 73.786%. Concentration of 0.25% surfactant, yields to recovery factor of 73.77%. Concentration of 0.35% surfactant, yields to recovery factor of 73.77%. Concentration of 0.45% surfactant, yields to recovery factor of 73.77%. The amount of surfactant concentration to obtain the optimal recovery factor value is 0.5% with a recovery factor value of 73.794%.

Keywords: EOR, Chemical Injection, Surfactant Injection, Recovery Factor

Topic: Reservoir engineering