Interfacial, emulsifying, and rheological properties of an additive of a natural surfactant and polymer and its performance assessment for application in enhanced oil recovery

Abstract

Surfactants are favorable chemical additives that are widely utilized in enhanced oil recovery (EOR) due to their inherent abilities such as wettability alteration and interfacial tension (IFT) reduction. However, most of the commercially available surfactants are expensive, hazardous to the environment, and can readily adsorb on the surface of the porous rocks. The present work investigates the possible application of a novel plant-based natural surfactant derived from the weed, Eichhornia crassipes, for EOR. The wettability alteration and IFT measurements have been performed in reservoir-like conditions (i.e., high temperature and pressure). Adsorption of the surfactant at the oil-water interface has been studied. In addition, the effect of the natural surfactant on the rheological behavior of xanthan gum has been analyzed over a wide range of shear rates, frequencies, and temperatures. Further, core flooding experiments have been carried out by injecting the surfactant-polymer slugs of different concentrations into the sandstone core sample under reservoir-like conditions. Effective reduction values of ∼37-41% in IFT and ∼43% in wettability were observed with increasing surfactant concentration. Moreover, enhancement in the rheological properties and 13.3-22.4% additional oil recovery demonstrate the possible applications of this natural surfactant-polymer system in EOR.

RAS ID

39565

Document Type

Journal Article

Date of Publication

2021

Funding Information

Curtin University of Technology Indian Institute of Technology Guwahati

School

School of Engineering

Copyright

subscription content

Publisher

ACS

Comments

Machale, J., Al-Bayati, D., Almobarak, M., Ghasemi, M., Saeedi, A., Sen, T. K., ... Ghosh, P. (2021). Interfacial, emulsifying, and rheological properties of an additive of a natural surfactant and polymer and its performance assessment for application in enhanced oil recovery. Energy & Fuels, 35(6), 4823-4834. https://doi.org/10.1021/acs.energyfuels.0c04007

Share

 
COinS
 

Link to publisher version (DOI)

10.1021/acs.energyfuels.0c04007