Enhancement of the Wettability and Lubrication of Shale Rock via Nanoemulsions

Xu, Quan; Li, Qingqiao; Wu, Xu; Li, Bofan; Yao, Erdong; Li, Yuan; Zhou, Fujian; Luo, Yan; Cai, Wei

doi:10.1155/2017/7145698

Cited by 10 publications

(2 citation statements)

References 30 publications

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“…The angle (θ) between the droplet and surface describes the droplet affinity with water and oil. If the θ < 75°, θ > 105°, and 105 > θ > 75, it shows water wetting, oil wetting, and neutral wetting behavior of the droplet, respectively . Both the synthesized nanoemulsions have shown a water affinity behavior; however, PNE had more wettability efficacy than ENE.…”

Section: Resultsmentioning

confidence: 98%

Comparative Study of the Development and Characterization of Ecofriendly Oil and Water Nanoemulsions for Improving Antifungal Activity

Pandey

Giri

Kumari

et al. 2021

ACS Agric. Sci. Technol.

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Present work aimed to synthesize peppermint and eucalyptus oil-based nanoemulsions by a high-energy sonication process having potent antifungal activity. Tween 80 was used as the most suitable emulsifier by increasing interaction and stability of the system. A relative study was done among eucalyptus oil (ENE) and peppermint oil (PNE) nanoemulsions. PNE had a smaller droplet size (20–40 nm) than ENE (60–100 nm). Because of the smaller droplet size, higher surface area, lower surface tension, and presence of antimicrobial metabolites, PNE exhibited a higher antifungal efficacy as compared to ENE. 1% PNE showed complete inhibition of four fungal phytopathogens, while ENE showed partial inhibition. Stability of ENE was also a limiting factor along with increasing droplet size and resulted in decreased antimicrobial activity. Conclusively, peppermint oil-based nanoemulsion (PNE) proved to be a most promising antimicrobial agent against fungal pathogens; it can be used for sustainable disease management in crop plants.

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Section: Resultsmentioning

confidence: 98%

Comparative Study of the Development and Characterization of Ecofriendly Oil and Water Nanoemulsions for Improving Antifungal Activity

Pandey

Giri

Kumari

et al. 2021

ACS Agric. Sci. Technol.

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“…This happens due to the adsorption of surfactant molecules, in which the displacing fluid (microemulsion) begins to form a film on the rock, promoting the inversion of wettability. The shorter the time required for the formation of this film, that is, the reduction of the contact angle, the better the efficiency of the micellar solution to displace the trapped oil. , …”

Section: Resultsmentioning

confidence: 99%

Study on Steam and Microemulsion Alternate Injection for Enhanced Productivity in Heavy Oil Fields

et al. 2023

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Steam injection is widely used as an enhanced oil recovery method for heavy oil fields; however, its efficiency normally decreases in late injection stages. Recent studies have suggested that steam and chemicals together have a potential to increase oil recovery. Despite the use of microemulsion alone has been previously made as a chemical enhanced oil recovery technique, steam and microemulsion alternated injection has not been reported yet. Thus, the present study evaluates this recovery method as an innovative way to optimize heavy oil recovery in sandstone reservoirs. Three microemulsions were produced using Ultranex NP100 (surfactant), n-butanol (cosurfactant), kerosene (oil phase), and synthetic produced water (aqueous phase), by varying surfactant concentrations. The viscosity, stability, surface tension, and interfacial tension of these systems were analyzed and assessed. Berea sandstone was used to represent sandstone reservoirs, in which the effect of microemulsions on rock wettability was measured. Using a coreflooding system, rock plugs were initially saturated with heavy oil (°API 17.1; from Northeast Brazil). Nine enhanced oil recovery tests were performed using steam and microemulsion alternated injection. In the tests, the injection bank order and the surfactant concentration were evaluated. The results showed that the alternated injection of steam and microemulsion achieved recovery factors between 42.79 and 51.23%, which is higher than that by steam injection alone (33.63%). It was observed that oil recovery using steam injection followed by microemulsion showed a better performance due to a higher effectiveness of displacement mechanisms. Steam reduces oil viscosity, while microemulsions decrease interfacial tensions and alter the sandstone wettability. Additionally, oil recovery increases together with the surfactant concentration due to a higher micelle number. Therefore, this study proves that steam and microemulsion alternated injection is a novel and effective method for enhanced heavy oil recovery in sandstone reservoirs.

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Wettability alteration of sandstone rock by surfactant stabilized nanoemulsion for enhanced oil recovery—A mechanistic study

Kumar

Mandal

2020

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Enhancement of the Wettability and Lubrication of Shale Rock via Nanoemulsions

Cited by 10 publications

References 30 publications

Comparative Study of the Development and Characterization of Ecofriendly Oil and Water Nanoemulsions for Improving Antifungal Activity

Comparative Study of the Development and Characterization of Ecofriendly Oil and Water Nanoemulsions for Improving Antifungal Activity

Study on Steam and Microemulsion Alternate Injection for Enhanced Productivity in Heavy Oil Fields

Wettability alteration of sandstone rock by surfactant stabilized nanoemulsion for enhanced oil recovery—A mechanistic study

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