Effluent As Surfactant For Enhanced Oil Recovery | 12087
Journal of Earth Science & Climatic Change
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This investigation considers black liquor (BL), obtained as an effluent from paper mills as candidate for chemical enhanced oil
recovery (EOR). The main constituent of BL is sodium lignosulfonate, an anionic surfactant. Results show that this anionic
surfactant may be the preferred candidate for EOR as they may be effective in creating low interfacial tension (IFT) as dilute
concentrations without requiring an alkali or a co-surfactant. Some of the formulations exhibit a low IFT at high salinity, and
hence may be suitable for use in high saline reservoirs. Adsorption tests were conducted on core samples which indicate that
the loss of these formulated surfactants may be comparable to other types of anionic surfactants. Evaluation of the surfactants
performance was done in oil recovery by core flood tests. Selected formulations recovered about 20-30% of the waterflood
residual oil saturation even with dilute concentration of 0.18 wt% surfactant concentrations from core samples.
Subrata Borgohain Gogoi has completed her Ph.D. from Dibrugarh University in 2007. She is an Associate Professor in the Department of Petroleum
Technology, a premier department in Petroleum studies in India. She has published more than 20 papers in reputed national and international journals.
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