Current Status Of Modified Waterflooding And Future Prospects In Improving Oil Recovery In Indonesia
World’s low oil price will affect the method of producing oil to meet energy demand. Modified waterflooding is an appealing technology to face this situation. Economic feasibility, environmentally friendly, and also the easiness of implementing this technology become considered. This paper will focus on modifying the water by lowering the salinity and the combination of low salinity and polymer as injected fluid topics. Low-salinity waterflooding is believed to enhance oil recovery by altering wettability of reservoir rock towards more water-wet state. Moreover, a combination between low-salinity water and polymer might have good potential through increasing the stability of the polymer itself. As a result, chemical cost during enhanced oil recovery (EOR) operation can be pressed down. Particularly, in Indonesia, oil demand is exceeding national oil production. It is also powered by major utilization of mature oil field which creates more difficulty in meeting the demand. Therefore, more efforts should be done to at least increase the national oil production. Low-salinity waterflooding and low-salinity polymer flooding have a potential in doing so.This paper will thoroughly presentsthe explanation regarding both techniques including mechanisms, developments, and challenges. Moreover, future prospect in general as well as in Indonesia are tried to be deliberated.
Keywords— Modified Waterflooding, Low-Salinity Waterflooding, Low-Salinity Polymer Flooding, Indonesia.