Interfacial tension of oil—brine systems in the presence of surfactant and cosurfactant

Ruckenstein, Eli; Rao, I.V

doi:10.1016/0021-9797(87)90173-1

Cited by 33 publications

(15 citation statements)

References 12 publications

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“…Interfacial tensions for the decane/SDS/aqueous sodium chloride solution are taken from the measurements of Ruckenstein and Rao. 66 Interfacial tensions for decane/aqueous SDS-sodium chloride were measured by Rehfeld. 67 The surface tensions of aqueous SDS solutions at varying sodium chloride concentration were estimated from the parameterisation (eqn ( 17)) provided by Prissle et al 55 It should be noted that the values used implicitly include the salting out of the surfactant by sodium chloride, both for the surface and interfacial tension values.…”

Section: Probing Mixed Phase Aerosol Droplets With Optical Tweezersmentioning

confidence: 99%

The morphology of aerosol particles consisting of hydrophobic and hydrophilic phases: hydrocarbons, alcohols and fatty acids as the hydrophobic component

Reid

Dennis-Smither

Kwamena

et al. 2011

Phys. Chem. Chem. Phys.

144

223

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The morphology of bi-phase aerosol particles containing phase separated hydrophobic and hydrophilic components is considered, comparing simulations based on surface and interfacial tensions with measurements made by aerosol optical tweezers. The competition between the liquid phases adopting core-shell and partially engulfed configurations is considered for a range of organic compounds including saturated and unsaturated hydrocarbons, aromatics, alcohols, ketones, carboxylic acids, esters and amines. When the solubility of the organic component and the salting-out of the organic component to the surface by the presence of concentrated inorganic solutes in the aqueous phase are considered, it is concluded that the adoption of a partially engulfed structure predominates, with the organic component forming a surface lens. The aqueous surface can be assumed to be stabilised by a surface enriched in the organic component. The existence of acid-base equilibria can lead to the dissociation of organic surfactants and to significant lowering of the surface tension of the aqueous phase, further supporting the predominance of partially engulfed structures. Trends in morphology from experimental measurements and simulations are compared for mixed phased droplets in which the organic component is decane, 1-octanol or oleic acid with varying relative humidity. The consequences of partially engulfed structures for aerosol properties are considered.

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Section: Probing Mixed Phase Aerosol Droplets With Optical Tweezersmentioning

confidence: 99%

The morphology of aerosol particles consisting of hydrophobic and hydrophilic phases: hydrocarbons, alcohols and fatty acids as the hydrophobic component

Reid

Dennis-Smither

Kwamena

et al. 2011

Phys. Chem. Chem. Phys.

144

223

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“…Although the effect of some surfactants on the interfacial 38 properties of shale oil systems has been investigated in the past, the limited data available in the litera-39 ture were mainly obtained at ambient conditions and thus may not be representative of fluid-rock inter- 40 actions at actual reservoir conditions. 41 In this study, a new framework is proposed to investigate the effect of surfactants on fundamental 42 parameters governing fluid displacement in two brine/oil/shale systems (A and B) at reservoir conditions. 43 The critical micelle concentration (CMC) of anionic and nonionic surfactants in brine and their adsorption 44 propensity on shale was first determined by ultraviolet-visible spectroscopy and pendant drop method.…”

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confidence: 99%

Dynamic interfacial tension and wettability of shale in the presence of surfactants at reservoir conditions

Mirchi

Saraji

Goual

et al. 2015

Fuel

111

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“…With the salinity further decreasing, the IFTs of the studied systems increased again. It is believed that this interesting response of IFTs to salinity was mainly caused by the dissolved hydrocarbons (polar species entering the water phase) in the water phase, and subsequently made the ions at the interface insufficient to present the LSE as claimed by Moeini et al 44,45 A schematic representation of this process is shown in Figure 4, which can assist in understanding the complex mechanisms involved in this process. Unfortu- nately, it is challenging to accurately determine this partitioning to the interface.…”

Section: Resultsmentioning

confidence: 96%

Influence of Individual Ions on Oil/Brine/Rock Interfacial Interactions and Oil–Water Flow Behaviors in Porous Media

Wei

et al. 2017

Energy Fuels

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The low salinity effect (LSE) in enhanced oil recovery (EOR) is widely accepted. However, its underlying mechanisms remain unclear due in part to the complex interactions at the oil/brine/rock interface. The chemistry of brine largely depends on the ionic composition. Thus, in this work, attention was placed on the roles of individual ions and salinity in LSE through direct measurements of oil/brine/rock interfacial behaviors, oil displacement efficiencies, and oil–water relative permeability in sandstone porous media. The results showed that the oil/water interfacial tensions (IFTs) were weakly dependent on ion and the lowest IFTs were generated at the salinities of 0.2–0.5 wt %. In contrast, the interfacial dilational modulus varied significantly with ion types and salinities due to the adsorption of polar components at the oil/water interface. Moreover, wettability alteration of the sandstone surface was found to be associated with the divalent ions in our work. As a result of the viscoelastic interfaces, the breakage of oil column into oil droplets or ganglia was delayed, which subsequently led to the improvement of the oil–water relative permeability and oil displacement efficiencies. Based on the analysis, it was concluded that HCO3 –, Mg2+, and SO4 2– were potential-determining ions (PDIs) in LSE. The results of the tests, to our knowledge, are the first that particularly emphasize the roles of individual ions at the interfaces and oil–water flow patterns in porous media.

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Interfacial tension of oil—brine systems in the presence of surfactant and cosurfactant

Cited by 33 publications

References 12 publications

The morphology of aerosol particles consisting of hydrophobic and hydrophilic phases: hydrocarbons, alcohols and fatty acids as the hydrophobic component

The morphology of aerosol particles consisting of hydrophobic and hydrophilic phases: hydrocarbons, alcohols and fatty acids as the hydrophobic component

Dynamic interfacial tension and wettability of shale in the presence of surfactants at reservoir conditions

Influence of Individual Ions on Oil/Brine/Rock Interfacial Interactions and Oil–Water Flow Behaviors in Porous Media

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