A Procedure for Measuring Contact Angles When Surfactants Reduce the Interfacial Tension and Cause Oil Droplets to Spread

Adejare, Oladapo; Nasralla, Ramez A.; Nasr‐El‐Din, Hisham A.

doi:10.2118/160876-pa

Cited by 9 publications

(3 citation statements)

References 30 publications

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“…This is also reflected in VES flooding; the rock wettability may alter significantly for the swept area, which was continuously flushed by VES solution. The water wetness is significantly enhanced, which may be particularly noticeable in the near-wellbore zone [27]. The possible mechanism for a higher adsorption of VES is shown in Figure 8.…”

Section: Dynamic Agingmentioning

confidence: 98%

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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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Section: Dynamic Agingmentioning

confidence: 98%

“…It can yield additional oil recovery of 20-25% after water flooding [24][25][26]. It was also demonstrated that a VES solution can alter the wettability of rock [27]. VES has different adsorption characteristics in different rock mineral components [28], but the effect on rock wettability is not clear.…”

Section: Introductionmentioning

confidence: 99%

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

Chen

et al. 2021

Energies

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“…Angle (θ) created at the contact line of the liquid-fluid interface and the solid substrate is typically used to calculate the contact angle [24]. In applications involving oil recovery, the contact angle of a droplet of water or oil is measured for a rock surface that has already been treated with the substance anticipated to have an impact on the wettability [25][26][27]. The experimental steps were as follows and shown in Figure 1: 1.…”

Section: Contact Angle Measurementmentioning

confidence: 99%

Experimental Investigation about Oil Recovery by Using Low-Salinity Nanofluids Solutions in Sandstone Reservoirs

Liu,

Yagmyrov,

et al. 2023

Applied Sciences

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Production of crude oil from matured oil reservoirs has major issues due to decreased oil recovery with water channeling; however, the low-salinity water flooding technique is more commonly used to maximize recovery of the remaining oil. In this study, we demonstrated a new hybridization technique of combining low-salinity water and nanofluids; this was achieved by using experiments such as contact angle measurement with water of different salinity levels and nanofluid concentrations, core displacement, and NMR (nuclear magnetic resonance) between low-/high-permeability rock. The trial results demonstrated that the test with KCl-1+NF outperformed those with other compositions by changing the original contact angle from 112.50° to 53.3° and increasing formation production up to 15 cc. In addition, we saw that when 2 PV of KCl-1+NF was injected at a rate of 5 mL/min, the middle pores’ water saturation dropped quickly to 73% and then steadily stabilized in the middle and late stages. Regarding the novel application of the hybridization technique, the insights presented in this paper serve as a helpful resource for future studies in this field.

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Investigating the Phase Behavior of Viscoelastic Surfactant with Squalene and Crude Oil Systems at High Temperature

et al. 2023

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A Procedure for Measuring Contact Angles When Surfactants Reduce the Interfacial Tension and Cause Oil Droplets to Spread

Cited by 9 publications

References 30 publications

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

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

Experimental Investigation about Oil Recovery by Using Low-Salinity Nanofluids Solutions in Sandstone Reservoirs

Investigating the Phase Behavior of Viscoelastic Surfactant with Squalene and Crude Oil Systems at High Temperature

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