A holistic review of harsh conditions resistant surfactants for enhanced oil recovery in dense carbonate reservoir

Sharifi, Amin; Miri, Rohaldin; Riazi, Masoud

doi:10.1016/j.fuel.2023.129109

Cited by 17 publications

(3 citation statements)

References 191 publications

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“…The further reduction in interfacial tension after aging can be attributed to the distribution of surfactant molecules between the oil and water phases. As the temperature increases, the solubility of surfactant molecules increases, leading to further adsorption at the oil and water interface. , The adsorbed surfactant molecules may subsequently diffuse from the interface into the oil phase, resulting in a decrease in the interfacial tension.…”

Section: Resultsmentioning

confidence: 99%

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Compound Anionic–Nonionic Surfactant System with Excellent Temperature and Salt Resistance for Enhanced Oil Recovery

Li,

Liu,

Jin

et al. 2023

Energy Fuels

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The development of a temperature- and salt-resistant surfactant system is of great significance in enhanced oil recovery. In this study, two anionic–nonionic surfactants, alkylphenol polyoxyethylene ether carboxylate sodium-10Na (APEC-10Na) and fatty alcohol polyoxyethylene ether carboxylate sodium-9Na (AEC-9Na), were applied to construct a compound surfactant system. When the total concentration was 0.3% and the mass ratio of APEC-10Na to AEC-9Na was 7:3, the compound system could reduce the interfacial tension between oil and water to 8.1 × 10–2 mN·m–1, which could be attributed to the dense arrangement of the surfactant molecules in the interface. The system can resist temperatures up to 110 °C and tolerate a monovalent salt concentration of 18 × 104 mg L–1 and a divalent salt concentration of 8 × 103 mg L–1. The compound surfactant system can modify the rock surface wettability from strong hydrophobicity to strong hydrophilicity, with an underwater–oil contact angle reaching 132.4° for the treated rock surface. The oil film peeling rate of the compound system is 73.4%, which is 29.2% higher than that of the commercial system and 41% higher than that of the formation water. The oil recovery rate of the compound system in core displacement experiments is 61.7%, which is 4.8% higher than that of the commercial system and 14% higher than that of the formation water. The compound surfactant system proposed in this work not only achieved low interfacial tension under high-temperature and high-salinity conditions but also realized effective interface wettability regulation, sufficient stripping of adhered oil films, and promotion of oil droplet migration, providing guidance in designing compound surfactant system for the efficient development of high-temperature and high-salinity reservoirs.

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Section: Resultsmentioning

confidence: 99%

“…As the temperature increases, the solubility of surfactant molecules increases, leading to further adsorption at the oil and water interface. 40,41 The adsorbed surfactant molecules may subsequently diffuse from the interface into the oil phase, resulting in a decrease in the interfacial tension.…”

Section: Construction Of Compound Oil Displacementmentioning

confidence: 99%

Compound Anionic–Nonionic Surfactant System with Excellent Temperature and Salt Resistance for Enhanced Oil Recovery

Li,

Liu,

Jin

et al. 2023

Energy Fuels

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“…The increasing global energy demand necessitates a commensurate increase in crude oil production. Consequently, heightened emphasis is being placed on the exploration of enhanced oil recovery enhanced oil recovery (EOR) methods, drawing progressively escalating attention. − With the advancement of horizontal well drilling techniques and the progress in large-scale hydraulic fracturing technology, unconventional oil reservoirs such as shale oil formations have been successfully exploited. , Simultaneously, due to the abundant reserves of unconventional oil resources, the vigorous exploration and development of resources such as shale oil formations can substantially alleviate the energy crisis. − However, shale oil formations, as unconventional hydrocarbon reservoirs, exhibit significant differences in terms of occurrence and permeability characteristics compared to conventional hydrocarbon reservoirs. − The reservoir rock properties of shale oil formations are notably inferior, with the predominant storage space consisting of a nanoscale pore–fracture system . The flow behavior of oil within these nanoscale pores differs distinctly from the flow patterns observed within conventional pores …”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulations of Supramolecular Polymers within Nanoconfinements for Enhanced Oil Recovery

Yuan,

Guo,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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Supramolecular polymers offer promising potential for enhanced oil recovery (EOR) advancing techniques. Current instrumental analyses face limitations in capturing instantaneous intracomplex motions due to temporal and spatial constraints. The molecular mechanism of supramolecular polymer transport behavior within nanoconfinement is not yet fully understood. Therefore, the self-assembly mechanism of βcyclodextrin (β-CD) and adamantane (ADA)-modified supramolecular polymers (p-AA-β-CD-ADA) was delved into in this work. Further exploration focuses on the translocation dynamics of p-AA-β-CD-ADA within nanoconfinement under external driving forces. Results suggest that β-CD and ADA in p-AA-β-CD-ADA were assembled into nodes in the form of a host and a guest, combining with a "node−rebar−cement" interaction model encapsulating the formation mechanism of these supramolecular polymers. The heightened density of the hydrate layers at the nanoscale pore throats acts as a constraining factor, resulting in restricted mobility and altered dynamics of the supramolecular polymers. During passage through nanopore throats, host−guest molecules within the supramolecular polymer experience noncovalent dissociation. Notably, these supramolecular polymers exhibit remarkable self-healing capabilities, reinstating their assembly state upon traversing pore throats. This work provides a molecularlevel comprehension of the potential utility of supramolecular polymers in EOR processes, offering valuable information for the molecular design of polymers employed for EOR in low-permeability reservoirs.

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Experimental evaluations of nano high-viscosity friction reducers to improve acid fracturing efficiency in low-permeability carbonate reservoirs

Wang,

Zhou,

et al. 2024

Chemical Engineering Journal

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A holistic review of harsh conditions resistant surfactants for enhanced oil recovery in dense carbonate reservoir

Cited by 17 publications

References 191 publications

Compound Anionic–Nonionic Surfactant System with Excellent Temperature and Salt Resistance for Enhanced Oil Recovery

Compound Anionic–Nonionic Surfactant System with Excellent Temperature and Salt Resistance for Enhanced Oil Recovery

Molecular Dynamics Simulations of Supramolecular Polymers within Nanoconfinements for Enhanced Oil Recovery

Experimental evaluations of nano high-viscosity friction reducers to improve acid fracturing efficiency in low-permeability carbonate reservoirs

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