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Article
Energy & Fuels
Guangfeng Liu et al.
Summary: Wettability plays a crucial role in the distribution of oil and water in tight oil reservoirs, as well as subsequent oil recovery. This study employs integrated experimental techniques to examine the impact of wettability on micro-distribution and production performance. The results show that wettability alteration affects the oil and water distribution, with strong water-wetting leading to oil droplets and weak oil-wetting resulting in an oil film. The findings highlight the importance of wettability in oil recovery.
Article
Engineering, Environmental
Zhongzheng Xu et al.
Summary: Superhydrophobic nanomaterials inspired by the lotus effect can effectively solve the problem of high injection pressure and insufficient water injection in low permeability oilfields. A novel type of superhydrophobic nanoparticle (SHNP) modified by fluorinated long chains is successfully prepared, which has excellent core drag reduction effect and broad application potential in oilfield development.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Monika Fedyna et al.
Summary: Two series of cryptomelane doped with Cu2+ and Ag+ ions were synthesized and additionally impregnated with other ions to obtain bi- and tri-metallic catalysts. The catalysts were thoroughly characterized and tested for soot oxidation under different reaction conditions. The role of doping was examined and discussed in terms of its influence on catalytic soot oxidation performance, NO2 formation, and resistance to SO2. The study found that doping can enhance NO2 production during soot oxidation and improve resistance to sulphur poisoning of the catalyst. However, the correlation between NO2 production and catalyst activity is weak.
Article
Energy & Fuels
Shams Kalam et al.
Summary: Surfactant flooding is an effective method to enhance oil recovery, but the loss of surfactant due to adsorption on reservoir rocks hinders its efficiency. This study investigates the use of formic acid to reduce the adsorption of cationic gemini surfactant on carbonate rocks. The results show that the addition of 1% formic acid dramatically reduces the surfactant's adsorption on carbonate rocks. It is believed that the carboxyl group released by the formic acid-rock reaction shields the surfactant from the rock surface, resulting in lower adsorption. This study provides a low-cost option for reducing cationic surfactant adsorption on carbonate rocks.
Article
Energy & Fuels
Zhihao Jiang et al.
Summary: Wettability is crucial for understanding the seepage characteristics of tight sandstone reservoirs. This study investigates the spontaneous imbibition and displacement behaviors of mixed-wet tight sandstone reservoirs using high precision balance and nuclear magnetic resonance (NMR) T2 experiment. The results reveal different types of pores with different wettability and provide a novel wettability evaluation method for mixed-wet tight sandstone.
Article
Energy & Fuels
Mingwei Zhao et al.
Summary: In this study, an active sulfonated silicon quantum dots (S-SiQDs) nanofluid was prepared using a facile hydrothermal synthesis method and sulfonated modification. The active S-SiQDs nanofluid demonstrated better interfacial tension reduction, wettability alteration, and oil detachment compared to single surfactants and single S-SiQDs. It significantly improved the imbibition recovery of low permeability reservoirs to 29.9%. The active S-SiQDs nanofluid possesses ultrasmall size, excellent temperature and salinity resistance, and high interfacial activity.
Article
Energy & Fuels
Xuyang Bai et al.
Summary: In this study, composite anionic-cationic (AC) surfactants were developed using sodium alpha olefin sulfonate and octadecyltrimethylammonium chloride to improve the wettability and dust suppression efficiency of coal dust. The synergistic suppression mechanisms of AC surfactant compounds were investigated at a molecular level. The results showed that the composite surfactants exhibited superior performance in terms of surface tension, contact angle, settling time, and wettability compared to monomeric alternatives. The addition of the composite surfactant resulted in increased hydrophilic groups on the surface of anthracite, explaining the enhanced wettability. The dust suppressant was found to be adsorbed on the surface and in the pores of anthracite, leading to improved water retention and wind resistance.
Article
Chemistry, Physical
Yun Bai et al.
Summary: The study successfully prepared a sulfonic/alkane composite amphiphilic Janus nano-silica through the Pickering emulsion template method, which exhibited good stability and effectiveness in enhancing residual oil recovery.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Yang Feng et al.
Summary: Plate-shaped nanoparticles have great potential in interfacial-based science and technology, such as enhanced oil recovery. Understanding the adsorption behavior of nanosheets at the water/oil interface is crucial. Research shows that carbon-chain modified nanosheets do not have a greater ability to alter interfacial tension compared to unmodified ones.
Article
Energy & Fuels
Milad Norouzpour et al.
Summary: This study introduces a novel surfactant extracted from quinoa plant for enhanced oil recovery. Compared to commercial surfactants, this natural surfactant shows better results in terms of interfacial tension and contact angle. Additionally, it exhibits promising performance in changing reservoir rock wettability and emulsification.
Article
Energy & Fuels
Kaiqiang Zhang et al.
Summary: Interfacial tensions (IFTs) between crude oil and water or brine systems are critically important in many processes. This study provides a large database of crude oil-water/brine IFTs at different temperatures and pressures. The effects of temperature, pressure, and fluid composition on IFTs were evaluated and the dynamic evolution of IFTs was categorized and described.
Review
Energy & Fuels
Omid Tavakkoli et al.
Summary: This study comprehensively reviews the positive effects of nanoparticles (NPs) on the performance of polymer and surfactant flooding in Enhanced Oil Recovery (EOR). The results show that NPs have great potential to improve the rheological properties of polymers, reduce interfacial tension, alter reservoir rock wettability towards more water-wet medium, and decrease surfactant adsorption on porous media.
Article
Energy & Fuels
Jinghong Hu et al.
Summary: A model was proposed to determine the shut-in time in shale oil reservoirs, taking into account pressure distribution and stimulation reservoir volume. Results showed that higher permeability can increase fluid flow capacity and accelerate the time of fracturing fluid volume stabilization.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Review
Engineering, Environmental
Yulong Yang et al.
Summary: Permeability reduction and formation damage caused by fines migration is a major reason for productivity decline. This paper reviews the primary factors influencing fines migration and the mathematical formulations for quantification. It also introduces experimental observations that contradict theoretical predictions, such as delayed particle release and attachment-detachment hysteresis. A hypothesis is proposed to explain the shifting of equilibrium positions, providing new insight into the interpretation of attachment-detachment hysteresis. The quantification of anomalous salinity effect on adhesion force is also discussed.
Article
Energy & Fuels
Amir Hossein Javadi et al.
Summary: Wettability alteration from oil-wet to water-wet is proposed as a mechanism for enhanced oil recovery. However, in a specific crude-oil/brine/rock system, low salinity water flooding was found to be ineffective. Chemical EOR, by adding a cationic surfactant to the injecting brine, was suggested as a hybrid technique to improve oil recovery in such cases. Contact angle, zeta potential, and IFT tests, as well as dynamic micro-model tests in fractured porous media, were conducted to study the interactions and displacement mechanisms. Experimental results showed that the surfactant absorbed on the oil/brine interface, leading to detachment of oil droplets and enhancement of oil recovery.
Article
Energy & Fuels
Rui Liu et al.
Summary: The study investigates a new amphiphilic graphene oxide derivative, GOA, for chemical enhanced oil recovery. Experimental characterizations and molecular dynamics simulations demonstrate that GOA exhibits good dispersibility and stability in brine, lowering interfacial energy at the oil-water interface and potentially enhancing oil recovery.
Article
Energy & Fuels
Farzad Pashapouryeganeh et al.
Summary: More than half of the world's oil and gas resources are found in carbonate reservoirs, but conventional oil recovery processes leave 60% of their residual oil behind. The complexity of carbonate reservoirs, including weak water imbibition, undesired capillary forces, low permeability, and oil wetness, leads to precipitation of injection chemicals and the entrapment of residual oil. Therefore, purposefully designed chemicals known as alkaline-surfactant-polymer (ASP) are expected to enhance oil recovery in these challenging reservoirs. This research focuses on improving the oil production mechanisms in carbonate porous medium using a synthesized ASP combination. The results show promising oil recovery percentages under harsh reservoir conditions.
Article
Energy & Fuels
Tiantian Zhang et al.
Summary: The role of nanofluids in enhanced oil recovery (EOR) processes and their application in tight sandstone reservoirs were studied systematically. The experimental results showed that stable nanofluids modified by different surfactants had potential for improved imbibition efficiency. Appropriate interfacial tension and oil contact angles were found to be beneficial for EOR potential. Anionic-nonionic and anionic surfactant nanofluids were suggested as better additives for sandstone reservoirs. The reduction of interfacial tension and alteration of wettability were attributed to the synergistic effects of silica nanoparticles and surfactant micelles. This research provides new insights into the interactions between surfactant nanofluids and their application in EOR.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Diling Yang et al.
Summary: Despite the progress in renewable energy, petroleum remains a crucial energy resource. Understanding the interfacial forces in petroleum production processes is essential for addressing challenges and improving efficiency. Nanomechanical measurement technologies have allowed for significant advancements in this area.
Article
Chemistry, Physical
Mingwei Zhao et al.
Summary: This study investigates the imbibition factors and mechanism of gel breaking fluid based on silica nanoparticle-reinforced CO2-sensitive fracturing fluid system. The results show that imbibition mainly occurs in small pores, where the adsorption of components reduces roughness and flow resistance. The formation of an adsorption layer changes wettability and reduces the interfacial tension between oil and water.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Long Wang et al.
Summary: This study investigates the flow and injection performance of a partially hydrolyzed polyacrylamide (HPAM) solution in a medium and low permeability oil reservoir. The effects of molecular weight, concentration, and core permeability are studied, as well as the influence of anionic-nonionic surfactant (ANS) on the injectability of the HPAM solution. It is found that high molecular weight and low core permeability hinder the injectability of HPAM solutions, while the addition of ANS improves injectability by reducing the critical value of injectability and decreasing flow pressure gradient. This research provides new insights and a theoretical basis for improving the injectability of HPAM solutions and the application of polymer flooding and polymer/surfactant binary flooding systems in medium and low permeability reservoirs.
Review
Energy & Fuels
Weibing Tian et al.
Summary: Imbibition plays a crucial role in enhanced oil recovery, benefiting reservoirs like fractured ones, conventionally developed by water-injection, and unconventional ones with abundant micro-nanopores. Understanding the mechanisms and governing factors of EOR by imbibition can contribute to better exploitation of oil and gas resources.
Article
Energy & Fuels
Razieh Khosravi et al.
Summary: This study introduces a novel workflow to interpret nanoparticle-enhanced oil recovery processes, demonstrating a dynamic wettability alteration approach to mimic the transition of rock wettability. The proposed model equations are solved numerically using a finite difference scheme and validated through experimental results, confirming the validity of the approach for modeling nanoparticle-assisted oil recovery processes. The findings provide insights into the performance of nanoparticles in enhanced oil recovery processes.
Article
Water Resources
Amin Alinejad et al.
Summary: This study explores the relationship between the shape of spontaneous imbibition profiles and wettability of a medium, proposing a new wettability evaluation criterion based on the change in Helmholtz free energy of the system. Experimental results suggest that introducing a new wettability index allows for more accurate correlations and predictions compared to traditional volume-based methods.
ADVANCES IN WATER RESOURCES
(2021)
Article
Chemistry, Physical
Yanling Wang et al.
Summary: This study successfully prepared gas-wetting graphene oxide through surface modification and demonstrated its potential application in gas condensate reservoir development. The results showed that gas-wetting alteration significantly increased the contact angle of droplets on the core surface, reduced the surface free energy, and improved the permeability of gas wells.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Review
Environmental Sciences
Dhruv Makwana et al.
Summary: Nanotechnology plays a crucial role in enhancing industrial materials, such as improving cement properties by adding nano silica. Under high pressure and high temperature conditions, nano silica can increase cement's compressive strength, reduce porosity and permeability, and decrease setting time.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Yulong Yang et al.
Review
Geochemistry & Geophysics
Chen Sun et al.
Article
Energy & Fuels
Yanxia Zhou et al.
Article
Chemistry, Physical
Mingwei Zhao et al.
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Proceedings Paper
Engineering, Civil
Hongda Zhou et al.
2018 INTERNATIONAL CONFERENCE ON CIVIL, ARCHITECTURE AND DISASTER PREVENTION
(2019)
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JOURNAL OF MOLECULAR LIQUIDS
(2018)
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Saurabh Naik et al.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2018)
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PETROLEUM EXPLORATION AND DEVELOPMENT
(2018)
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2017)
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JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2015)
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Ying Dan Liu et al.
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(2012)
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Kirtiprakash Kondiparty et al.
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Tayfun Babadagli
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
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