Experimental investigation of surfactant polymer injection for improving enhanced oil recovery in designed-micromodel and y-field

Abstract

Due to the remarkable oil reduction in oil fields, enhanced oil recovery (EOR) techniques have been considered by a large number of scientists. In this study, the surfactant-polymer injection(SP) was firstly tested in a designed-micro model by using sand, gasoil and a crude oil to evaluate its performances, and then it was applied in the Y- field by involving a Single Well Chemical Tracer Test (SWCTT) to determinate the residual oil saturation (Sor) and the ability of the field to EOR. The results indicate that SP-flooding leads to the recovery of 95% of residual oil contained in 5 m radius.