Effect of Jatropha Bio-Surfactant on Residual Oil during Enhanced Oil Recovery Process

摘要

Surfactants are generated in situ during alkaline flooding when the injected alkali react with organic acids in crude oil. This commercial surfactant produced in oil-brine interface, decreases interfacial tension (IFT) leading to additional oil recovery. The aim of this study is to examine the performance of a specific surfactant on oil recovery. These include injection of surfactant (a blend of jatropha seed oil) by performing simultaneous experiments using a reservoir permeability testing equipment (RPT). Core sample flooding experiment was conducted on four core sample samples with different permeability and porosity. The surfactant is flooded through the core sample samples at different pore volumes using RPT as the flooding equipment. The surfactant blend causes foam formation to displace oil from the pores by altering its affinity to the rock and influencing oil/brine interfacial tension. The experiments were performed at ambient conditions. According to the results, the oil recovery noted was over 3% OOIP for the various core sample flooded.