Improved oil recovery by reducing surfactant adsorption with polyelectrolyte in high saline brine

Budhathoki, M. and Barnee, S.H.R. and Shiau, B.-J. and Harwell, J.H. (2016) Improved oil recovery by reducing surfactant adsorption with polyelectrolyte in high saline brine. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 498. pp. 66-73.

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Abstract

Surfactant adsorption on reservoir rock is one of the biggest challenges of chemical enhanced oil recovery (cEOR) techniques. This problem can become severe in high saline brine environments. In this work, the efficacy of a polyelectrolyte, polystyrene sulfonate (PSS), as a sacrificial agent for lowering surfactant adsorption from reservoir brine that has totally dissolved solids (TDS) of over 300,000 mg/l is investigated. Four different molecular weight PSSs are evaluated through equilibrium and dynamic adsorption studies carried out on Berea sandstone and Ottawa sand. Results show significant reduction in surfactant adsorption after PSSs addition. The effects of surfactant/PSS addition techniques, sequential and simultaneous, on surfactant and/or PSS adsorptions are also studied. Sand pack studies are conducted to evaluate the effect of PSS-minimized surfactant adsorption on oil mobilization/recovery. Results show substantial improvement in oil recovery in the presence of PSS, suggesting a potential as a sacrificial agent in cEOR. © 2016 Elsevier B.V.

Item Type: Article
Impact Factor: cited By 42
Uncontrolled Keywords: Adsorption; Oil well flooding; Petroleum reservoirs; Polyelectrolytes; Polystyrenes; Surface active agents, Chemical enhanced oil recoveries; Polystyrene sulfonate; Sacrificial agents; Surfactant adsorption; Total dissolved solids, Enhanced recovery, oil; polystyrenesulfonic acid; sodium chloride; surfactant, adsorption; adsorption kinetics; Article; chemical enhanced oil recovery; chemical procedures; controlled study; equilibrium constant; molecular weight; priority journal; surface charge
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 25 Mar 2022 07:39
Last Modified: 25 Mar 2022 07:39
URI: http://scholars.utp.edu.my/id/eprint/30852

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