The Influence of Pineapple Skin Eco-Enzyme on The Formation of Middle Phase Emulsion in Enhanced Oil Recovery Implementation

Abstract

Oil requirement is constantly experiencing escalation, although at the current situation, the supply still depended on fossil and non-renewable fuel sources. The volume of crude oil production, especially in older wells, is starting to decrease. That is why, Enhanced Oil Recovery (EOR) method in form of chemical injection with surfactant is currently developed. The study aims to provide understanding on the influence of pineapple peel eco enzyme concentration in the formation of middle phase emulsion in EOR process. The method used in this research is a laboratory study of pineapple skin eco-enzyme as surfactant solution on brine with 20,000 ppm and 40,000 ppm sanities. The concentration levels of pineapple skin eco-enzyme surfactant were at 20%, 30%, and 40%. Phase behavior test was conducted on pineapple skin eco-enzyme with varied levels of salinities and concentrations. The middle phase emulsion test was conducted at 60°C. Middle phase emulsion test results for 20,000 ppm salinity produced 2.5% middle phase in all concentration variations (20%, 30%, and 40%). Meanwhile for 40,000 ppm brine salinity, 1.25% of middle phase was found at 20% and 40% concentration, however at 40% concentration, the middle phase was at 6.25%. The phase behavior test results show that the highest level of middle phase emulsion formation was at 40,000 ppm salinity and 30% concentration (6.25%). Based on the finding, we can conclude that eco-enzyme can be utilized as surfactant due to its ability to form a stable middle phase emulsion on certain levels of concentration and salinity.