Abstract:
In the petroleum exploration industry with water flooding technology, the process starts from injection a specific
temperature water into the oil reservoir rocks for push oil to the surface of earth with artificial lift. At the surface
facilities, water that mixed with oil will be separated by separator, wash tank and clarifier tanks. Oil stored in shipping
tanks and water stored in the surge tank. Water will inject to reservoir or will discharge to environment. Based on
regulation Ministry of Environment Indonesia No 42 (1996), oil contaminated in water that can discharge into
environment maximal 25 mg/l. To meet the quality, chemical reverse demulsifier will be injected with appropriate doses
and concentrations to degrade oil contamination in water (emulsion). The purpose of this research is determined the
effect of concentration and injection volume of reverse demulsifier. Beside them is seeking concentration and injection
volume of reverse demulsifier that appropriate in Minas oil field of Indonesia on the water flooding technology. The
research method is injected reverse demulsifier with various volumes from 0,001 ml till 0,010 ml that will be varied in
concentrations 10% till 100%. The samples taken from Minas oil field with oil content 150 mg/l. The most effective and
efficient of injection result on 0,009 ml with concentration 70% which can reduce oil content up to 21,34 mg/l.
