Analysis on Capillary Pressure Curves by Wettability Modification through Surfactants

Julius, Prince; Ananthanarayanan, P. N.; Anbazhagan, G.

doi:10.17485/ijst/2015/v8i14/70682

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Critical Micelle Concentration Test1

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Cited by 2 publications

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“…The formation of droplet will increase by increasing surfactant concentration [12]. At specific concentration, the micelle will appear with its lowest size leads to lower IFT at optimum.…”

Section: Critical Micelle Concentration Testmentioning

confidence: 99%

Improving Recovery Through Surfactant Desorption on An Oil Wet Limestone Reservoir

Mja¹

2017

J Pet Environ Biotechnol

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“…The formation of droplet will increase by increasing surfactant concentration [12]. At specific concentration, the micelle will appear with its lowest size leads to lower IFT at optimum.…”

Section: Critical Micelle Concentration Testmentioning

confidence: 99%

Improving Recovery Through Surfactant Desorption on An Oil Wet Limestone Reservoir

Mja¹

2017

J Pet Environ Biotechnol

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“…The Amott and USBM methods, as well as their improved methods, are based on the imbibition test, which is mainly used to determine the average wettability of core samples [5]. The Amott method must measure the amount of both spontaneous and forced imbibition, and Julius proposed a quantitative formula of the Amott method for calculation of the wettability index [13]. The results obtained by the Amott-Harvey method show that static-aging wettability alteration of a finite volume of crude oil is not as significant as for the dynamic-aging method.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Viscoelastic-Surfactant-Induced Wettability Alteration in Porous Media

Chen

et al. 2021

Energies

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Wettability alteration is one of the most important mechanisms of surfactant flooding. In this work, the combined Amott/USBM (United States Bureau of Mines) method was applied to study the average wettability alteration of initially neutral cores after viscoelastic-surfactant (VES) filtration. The effects of static aging, dynamic aging, VES concentration, filtration flow rate, and pore radius on the alteration of a core’s average wettability were studied. The wettability-alteration trends measured by Amott and USBM were consistent, demonstrating that the overall hydrophilicity of the core was enhanced after VES filtration. The wettability alterations of the core brought about by dynamic aging were more significant than by static aging. The viscoelastic properties of the VES played an important role in altering the wettability. In addition, the ability of the VES to affect the core’s wettability was significantly enhanced when the VES concentration was increased, which was beneficial in increasing VES adsorption on the pore-wall surface, thus altering the overall wettability of the core. Increasing filtration flow rates can destroy those high-viscosity VES aggregates via the higher shear rate. A higher retention of VES makes the core more hydrophilic. The difference in the wettability of cores with different pore radius after VES filtration was not significant. The alteration of average wettability caused by VES in porous media provides a new vision for studying the EOR mechanism of VES.

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Analysis on Capillary Pressure Curves by Wettability Modification through Surfactants

Cited by 2 publications

References 3 publications

Improving Recovery Through Surfactant Desorption on An Oil Wet Limestone Reservoir

Improving Recovery Through Surfactant Desorption on An Oil Wet Limestone Reservoir

Characteristics of Viscoelastic-Surfactant-Induced Wettability Alteration in Porous Media

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