Rheology, characteristics, stability, and pH-responsiveness of biosurfactant-stabilized crude oil/water nanoemulsions

Rheology, characteristics, stability, and pH-responsiveness of biosurfactant-stabilized crude oil/water nanoemulsions

[Display omitted] •Stable crude oil/water nanoemulsions stabilized by biosurfactant are formulated.•The formulated nanoemulsions possess favorable characteristics for EOR applications.•At low shear rates, the emulsions showed shearing-thinning behavior.•At high shear rates, the emulsions showed shea...

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Veröffentlicht in:Fuel (Guildford) 2022-01, Vol.307, p.121845, Article 121845
Hauptverfasser: Al-Sakkaf, Mohammed K., Onaizi, Sagheer A.
Format: Artikel
Sprache:eng
Schlagworte:
Biosurfactants
Crude oil
Crude oil-in-water nanoemulsions
Droplet size
Emulsions
Enhanced oil recovery
Environmental impact
High temperature
Interface stability
Nanoemulsions
Oil
Oil and gas fields
Oil field equipment
Oil fields
Oil recovery
pH effects
pH-responsiveness demulsification mechanism
Rhamnolipid biosurfactant
Rheological properties
Rheology
Shear
Shear thickening (liquids)
Shear thinning (liquids)
Surface tension
Surfactants
Thickening
Zeta potential
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Zusammenfassung:[Display omitted] •Stable crude oil/water nanoemulsions stabilized by biosurfactant are formulated.•The formulated nanoemulsions possess favorable characteristics for EOR applications.•At low shear rates, the emulsions showed shearing-thinning behavior.•At high shear rates, the emulsions showed shearing-thickening behavior,•Crude oil is completely recovered from the emulsion in
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2021.121845