Anionic surfactant with enhanced interfacial wettability control capability for residual oil development

Li, Lin; Jin, Xiao; Chen, Jia; Wang, Zizhao; Wu, Yining; Zhao, Mingwei; Dai, Caili

doi:10.1016/j.colsurfa.2022.130073

Cited by 13 publications

(3 citation statements)

References 41 publications

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“…Crude oil was applied to the surface of the glass sheets and allowed to age for 5 days at 110 °C. The oil-coated glass sheets were immersed in simulated formation water, CD and OCD nanofluids at 90 °C . Images capturing the evolving state of the oil film peeling over time during the experiment were captured to analyze the oil film images acquired at various intervals, facilitating the calculations of the ratio between the remaining area of the oil film and its original area.…”

Section: Experimental Sectionsmentioning

confidence: 99%

Carbon Dot Nanomaterials with High Interfacial Activity for Unconventional Reservoir Development

Liu,

Sun,

Wang

et al. 2024

ACS Appl. Nano Mater.

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Carbon dot nanomaterials (<10 nm) exhibit superior application prospects as oil displacement materials for unconventional reservoir development. However, the limited oil−water and oil−solid interfacial activity of carbon dot nanomaterials restricts their broader application. In this study, carbon dot nanomaterials (CDs) are expeditiously prepared via a microwave-assisted synthesis method utilizing urea and citric acid as precursor compounds. OAB-modified active carbon dot nanomaterials (OCDs) are prepared by grafting oleic acid amidopropyl betaine (OAB) through hydrothermal reaction at 90 °C for 5 h using CDs as a carbon dot carrier. Stability experiments show that the plentiful hydrophilic groups present on the surface of the OCD augment electrostatic repulsion among them, thereby imparting dispersibility, temperature tolerance (90 °C), and salt resistance (2.6 × 10 4 mg/L). Additionally, OCDs demonstrate optimal effectiveness at a concentration of 0.5 wt %. At this concentration, OCDs can reduce the interfacial tension to 0.66 mN/m and achieve the underwater oil contact angle to 126°. Within 24 h, OCDs can strip 60.6% of the oil film. OCDs show the excellent ability to enhance oil−water and oil−solid interfacial activity. Meanwhile, OCD nanofluids can effectively form emulsions with crude oil and spontaneously demulsify within 2 h in a state. Core flooding tests demonstrate that OCD nanofluids, when compared with simulated formation water, reduce injection pressure by 46.3% and enhance oil recovery by 31.1%. This study offers a promising solution for the efficient development of unconventional reservoirs with carbon dot nanomaterials.

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Section: Experimental Sectionsmentioning

confidence: 99%

Carbon Dot Nanomaterials with High Interfacial Activity for Unconventional Reservoir Development

Liu,

Sun,

Wang

et al. 2024

ACS Appl. Nano Mater.

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“…It could be seen that the IFT value of S-CDs did not simply decrease by the increasing of concentration but there was an optimal concentration. 34,35 When this value was exceeded, the interfacial tension would increase slightly. This was because, at lower concentrations, nanoparticles continued to diffuse to the oil−water interface, which reduced the interfacial tension.…”

Section: Temperature and Salt Resistance Performance Of S-cdsmentioning

confidence: 99%

Carbon-Based Active Nanoparticles with Ultrahigh Temperature and Salt Resistance for Enhanced Oil Recovery from Unconventional Oil Reservoirs

Sun,

Dong,

Zhu

et al. 2023

Energy Fuels

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Carbon-based nanoparticles possess ultrasmall size (<10 nm) and show great application potential in reducing the injection pressure of unconventional reservoirs. However, the strong hydrophilicity of carbon nanoparticles limits the oil−water interfacial activity, which hinders the further improvement of oil recovery. In this study, active carbon dots (S-CDs) are synthesized through two-step hydrothermal reactions by first preparing carbon dot (CD) carriers from citric acid and ethylenediamine and then grafting cocamidopropyl-N,N-dimethylglycine and characterizing them by high-resolution transmission electron microscopy, atomic force microscopy, Fourier transform infrared spectroscopy, and Xray photoelectron spectroscopy. The stability experiment verifies that the abundant hydrophilic groups on the surface substantially enhance the electrostatic repulsion between S-CDs, and the absence of carboxyl groups avoids the reaction with other groups, which endows S-CDs with intrinsic aqueous dispersibility and resistance to high temperature (130 °C) and high salinity (16 × 10 4 mg/L). In addition, S-CDs with an average hydration particle size of 2.84 nm exhibit excellent oil−water and oil−solid interfacial activity by controlling the interfacial tension, interfacial viscoelastic modulus, wettability alteration, and adsorption capacity. Core flooding tests show that 0.05 wt % S-CD nanofluids can reduce the injection pressure by 32.92% and increase the oil recovery rate by 19.15% compared to simulated formation water.

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“…There are plenty of materials that can realize wettability alteration. Among multiple wettability modifiers, surfactants are the most frequently used materials and have been applied for years. − Although commercial surfactants have been widely utilized as wettability modifiers, especially for oilfield applications, it is the costs of the surfactant that impedes it from further development and applications . Nanoparticles are novel materials to alter wettability in recent years.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Capillary Force Recovery of Nanoparticle-Coated Shale after Supercritical CO₂ Exposure: Implications for CO₂ Sequestration

et al. 2023

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The surface wettability and morphology of shale may both be modified by SiO 2 nanofluid (SNF), directly influencing the capillary force and CO 2 geo-storage. However, the literature requires more information and studies with respect to nanoparticles' effect on shale surface at reservoir conditions of high pressure and temperature. Here, we investigate the stability of nanoparticle layers formed by SNF on Longmaxi (marine) and Yanchang (continental) shale in ScCO 2 and nanoparticles' efficiency of wettability reversal at different nanofluid aging times and concentrations. Besides, low-pressure nitrogen gas adsorption (LP-NA) was performed to evaluate the effect of nanoparticles on shale pore structures after ScCO 2 exposure. Results indicate that the nanoparticle structure could be stable in ScCO 2 and render the wettability of shale samples to be more hydrophilic, while the quartz-rich Longmaxi shale surface shows a denser nanostructure than the clay-rich Yanchang shale surface does and presents a stronger water wettability. More micropores are transformed into mesopores or macropores for ScCO 2and SNF-treated Longmaxi samples than solely ScCO 2 samples, but the pore structure parameters show trivial alteration in Yanchang samples after SNF treatment. The difference in the capillary force recovery between Longmaxi (recovered by 660.5%) and Yanchang (recovered by 500.6%) shale implies that silica nanofluid may be more suitable for Longmaxi formation in the CGS application.

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Anionic surfactant with enhanced interfacial wettability control capability for residual oil development

Cited by 13 publications

References 41 publications

Carbon Dot Nanomaterials with High Interfacial Activity for Unconventional Reservoir Development

Carbon Dot Nanomaterials with High Interfacial Activity for Unconventional Reservoir Development

Carbon-Based Active Nanoparticles with Ultrahigh Temperature and Salt Resistance for Enhanced Oil Recovery from Unconventional Oil Reservoirs

Investigation on Capillary Force Recovery of Nanoparticle-Coated Shale after Supercritical CO₂ Exposure: Implications for CO₂ Sequestration

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Anionic surfactant with enhanced interfacial wettability control capability for residual oil development

Cited by 13 publications

References 41 publications

Carbon Dot Nanomaterials with High Interfacial Activity for Unconventional Reservoir Development

Carbon Dot Nanomaterials with High Interfacial Activity for Unconventional Reservoir Development

Carbon-Based Active Nanoparticles with Ultrahigh Temperature and Salt Resistance for Enhanced Oil Recovery from Unconventional Oil Reservoirs

Investigation on Capillary Force Recovery of Nanoparticle-Coated Shale after Supercritical CO2 Exposure: Implications for CO2 Sequestration

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Product

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Investigation on Capillary Force Recovery of Nanoparticle-Coated Shale after Supercritical CO₂ Exposure: Implications for CO₂ Sequestration