Molecular dynamics simulation of oil displacement using surfactant in a nano-silica pore

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: unknown, P. 133165 - 133165

Published: Jan. 1, 2024

Molecular Dynamics (MD) simulations of oil droplet displacement have been performed using pressure driven surfactant flooding at typical reservoir condition (T=330 K and P=20 MPa). The behavior the micellization molecules has validated. A micelle with a radius 22.85 Å is formed by 60 anionic sodium dodecyl benzenesulfonate (SDBS) in aqueous solution. Surfactant additions result significant reduction interfacial tension (IFT) for oil/water system such dependent on surface concentration. microscopic mechanism IFT described. Interfacial thickness increases from 3.5 to 22.5 T=300 andP=1 atm after are adsorbed interface, indicating high miscibility two phases thus results reduction; calculated interface formation energy single molecule -145.7 Kcal/mol, which means would lead decrease more steady system. For simulation, static contact angle additions. larger droplet, stronger drop deformation higher speed. Limited observed as detaches solid substrate. Compared water flooding, can significantly increase speed up 80%.

Language: Английский

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A static and dynamic analysis of nonionic-based binary surfactant systems for adsorption mitigation in a carbonate reservoir with high salinity

Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: 407, P. 125141 - 125141

Published: June 5, 2024

Language: Английский

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The Rheological Enhancement of an Internal Olefin Sulphonate Surfactant upon Interactions with Cationic Surfactants by Micellization Changes

Materials, Journal Year: 2025, Volume and Issue: 18(6), P. 1270 - 1270

Published: March 13, 2025

Enhanced oil recovery (EOR) methods traditionally rely on polymer solutions to improve viscosity and elasticity; however, their effectiveness is limited under high-temperature, high-salinity, high-shear conditions, leading elevated operational costs. Anionic/cationic formulations have been studied in terms of interfacial tension reduction for EOR applications. This study presents a novel approach by enhancing the rheological properties an anionic internal olefin sulfonate surfactant through interactions with cationic surfactants, eliminating need molecules. research demonstrates that surfactants can induce micellization changes, resulting substantial enhancement viscoelasticity development. The effect found depend hydrocarbon chain length concentration longer chains yielding higher more pronounced non-Newtonian behavior. Additionally, this reveals addition NaCl alters micellar organization, order component additions playing critical role performance. kinetic-dependent behavior, rarely explored applications, highlights potential counterion as enhancers surfactant-based flooding processes. Oscillatory rheology confirms cationic/anionic systems exhibit stable viscoelastic making them potentially suitable harsh reservoir environments than polymer-based fluids. These findings open new avenues development cost-effective tailored formulations, offering alternative challenging conditions.

Language: Английский

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Smart Technologies in Enhanced Oil Recovery: Integrating AI, Nanotechnology, and Sustainable Practices

IntechOpen eBooks, Journal Year: 2025, Volume and Issue: unknown

Published: March 24, 2025

Enhanced oil recovery (EOR) is a critical method for extracting additional from mature reservoirs, but it faces increasing pressure to become more efficient and environmentally sustainable. This chapter explores the integration of smart technologies such as artificial intelligence (AI), nanotechnology, sustainable practices into EOR. AI revolutionizing EOR operations by optimizing reservoir management, improving real-time monitoring, reducing operational costs. Nanotechnology enhances through use functionalized nanoparticles fluids, which improve mobility reduce chemical consumption. Additionally, practices, including CO2-EOR, water-efficient techniques, biodegradable chemicals, are being adopted lower environmental impact EOR, especially in terms carbon emissions water use. While challenges remain—such high cost technology fluctuating prices—the future holds promise continuous technological innovation growing emphasis on sustainability.

Language: Английский

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Oil Removal in Prewet Calcite: Active Versus Inactive Ions Investigated by a Fourier Transform Infrared and X-ray Photoelectron Spectroscopy Study

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

In presalt reservoirs, natural rocks interact simultaneously with formation water (FW) and mineral oil. The prehydrated calcites FW demineralized (DW) are suitable model systems to investigate oil adsorption (removal) on (from) their surfaces by Fourier transform infrared spectroscopy X-ray photoelectron spectroscopy. Preliminary characterization of the chemical composition fresh cleaved calcite conditioned directly low salinity (LS) waters, FW, DW indicates that undergoes (i) surface dissolution once in contact diluted LS (LS100) as testified split ν3 vibration bands CO32- group (ii) partial modification e through Mg incorporation, anchoring at surface, salt deposit calcite/FW interface. Pristine (FW, DW) prewet were Nujol, an overall larger CH2 CH3 band intensity Nujol was observed than calcite/DW/oil calcite/oil interfaces. final conditioning calcite/oil, calcite/FW/oil, ended up greater removal for a saline solution 0.2 mol/L ion strength, independent prehydration. Our results indicate altered or affects subsequent removal, and, therefore, there is competitive role between brine strength compositions enhanced recovery process using water.

Language: Английский

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