Studi Laboratorium Perbandingan Kinerja Biosurfaktan Sintetik Dalam Merubah Wettabilitas Batuan Sandstone

Putri, Selvi Isnani (2022) Studi Laboratorium Perbandingan Kinerja Biosurfaktan Sintetik Dalam Merubah Wettabilitas Batuan Sandstone. Other thesis, Universitas Islam Riau.

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Abstract

Biosurfactant Methyl Ester Sulfonate (MES) and synthetic surfactant Alpha Olefin Sulfonate (AOS) will be compared for their performance in changing rock wettability from oil wet to water wet. The use of these two surfactants is intended to see the extent of the ability of biosurfactants as an alternative to petroleum-based surfactants. Variations in brine salinity 10,000 ppm, 15,000 ppm, and 20,000 ppm, variations in surfactant concentration 0.1%; 0.2% and 0.3%, and variations in temperature 60oC, 70oC will be seen its influence on changes in rock wettability. In this study, the surfactant contact angle was compared visually with the oil contact angle through the resulting oil drop. The results of this study indicate that the contact angle of the MES surfactant is smaller (>90o) than the contact angle created by the AOS surfactant. This shows that MES surfactant is better at changing the wettability of sandstone compared to AOS surfactant. Salinity, concentration and temperature affect the wettability of rock. Low salinity is more optimal in changing rock wettability to water wet. The higher the concentration, the better the performance in changing the wettability of rock to water wet. The increase in temperature is also able to change the wettability of rock into water wet. So, it was concluded that the results of the rock wettability test became water wet along with increasing surfactant concentration, decreasing salinity, and increasing temperature.

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