A critical review on selection of microemulsions or nanoemulsions for enhanced oil recovery

Mariyate, Jain; Bera, Achinta

doi:10.1016/j.molliq.2022.118791

Cited by 61 publications

(21 citation statements)

References 166 publications

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“…The submicron droplets are applied in enhanced oil recovery (EOR), which consists in the detection and recovery of oil trapped in low-porosity rocks [ 110 ]. Among all kinds of EOR techniques including thermal EOR, gas EOR, and chemical EOR [ 111 ], the latter recovers oil through the injection of chemicals such as surfactants, polymers, and alkalis [ 112 ]. The surfactants play an important role in reducing the surface tension between oil and water phases, also switching the wettability of the rock surface from oil-wet to water-wet, which is aimed at detaching the retained oil from the solid surface.…”

Section: Emerging Applications Of the Submicron Dropletsmentioning

confidence: 99%

Microfluidic Methods for Generation of Submicron Droplets: A Review

Huang

Xie

2023

Micromachines

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Submicron droplets are ubiquitous in nature and widely applied in fields such as biomedical diagnosis and therapy, oil recovery and energy conversion, among others. The submicron droplets are kinetically stable, their submicron size endows them with good mobility in highly constricted pathways, and the high surface-to-volume ratio allows effective loading of chemical components at the interface and good heat transfer performance. Conventional generation technology of submicron droplets in bulk involves high energy input, or relies on chemical energy released from the system. Microfluidic methods are widely used to generate highly monodispersed micron-sized or bigger droplets, while downsizing to the order of 100 nm was thought to be challenging because of sophisticated nanofabrication. In this review, we summarize the microfluidic methods that are promising for the generation of submicron droplets, with an emphasize on the device fabrication, operational condition, and resultant droplet size. Microfluidics offer a relatively energy-efficient and versatile tool for the generation of highly monodisperse submicron droplets.

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Section: Emerging Applications Of the Submicron Dropletsmentioning

confidence: 99%

Microfluidic Methods for Generation of Submicron Droplets: A Review

Huang

Xie

2023

Micromachines

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“…7 EOR techniques can revitalize mature fields to increase oil production and prolong fields' productive life. 8,9 During oil production, reservoirs suffer a natural energy decline. To minimize this effect, two strategies can be implemented: (i) supplement energy through fluid injection and (ii) reducing the viscous and/or capillary resistances of the fluid−rock system by modifying the physicochemical characteristics to reduce the amount of oil retained in the reservoir.…”

Section: Introductionmentioning

confidence: 99%

“…Since the discovery of new oil reserves has decreased over the years, increasing the recovery factor, especially in mature fields, is critical to meet the rising demands of volume. − Enhanced recovery methods (EOR) aim to increase the volume fraction of oil recovered from the reservoir as compared what would be obtained by conventional methods . EOR techniques can revitalize mature fields to increase oil production and prolong fields’ productive life. , …”

Section: Introductionmentioning

confidence: 99%

Increasing Recovery Factor in Heavy Oil Fields Using Alternating Steam and Surfactant Injection

et al. 2023

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Fossil fuels, particularly oil, currently dominate the global energy matrix. With a projected 30% increase in demand by 2040 compared to 2010, it is crucial to maintain current oil production levels. To achieve this, it is necessary to increase the oil recovery factor through alternative methodologies that will improve oil extraction from reservoirs and exploration viability in mature fields. While previous studies have investigated thermal and chemical methods to increase the recovery factor, this study aims to explore the synergy between steam and non-ionic surfactants varying the surfactant degrees of ethoxylation and injection configurations. The experimental study investigated the application of solutions of ethoxylated nonylphenol surfactants (NP-10EO and NP-100EO) combined with steam injection into banks at different concentrations and injection configurations. The results showed that combining the NP-100EO surfactant (0.5% m/m) with steam demonstrated the highest oil recovery (64.88%) compared to conventional steam (45.19%). The most effective configurations were surfactant + steam + surfactant (65.06%) and surfactant + steam + water (65.88%). These findings suggest that the proposed technique of steam injection and surfactant solution could be a promising alternative. By revitalizing marginal fields, this technique could help extend production and stimulate local and regional development.

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“…Increasing worldwide energy demands and the limited oil resources have made researchers focus on enhancing drilling methods. Enhanced oil recovery (EOR) by waterflooding is considered the most practical and cost-effective way to extract residual oil by manipulating the properties of reservoir rocks and trapped oil. − Some factors including oil saturation, capillary forces, and low sweep efficiency as a result of rock heterogeneities may lead to reduction or failure of EOR methods for oil extraction. Nevertheless, finding reservoir information maximizes the EOR efficiency and reduces the cost of the upstream project. , Tracer technology with 50 years of history in the oil industry meets exactly these needs before EOR operations in the oil field test by employing chemicals with unique properties. , Using a smart tracer injected into the water provides a comprehensive description about reservoirs by responding to ambiguities around the relationship between the connected reservoirs, mapping the flow path in the reservoir, and also locating the injected water …”

Section: Introductionmentioning

confidence: 99%

Development of a Green and Sustainable Nanofluid Based on Carbon Dots with Sensing Capability for Enhanced Oil Recovery

Ranjbar¹,

Sarlak

Rashidi³

2022

Energy Fuels

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Carbon dots (CDs) as a zero-dimensional family of nanocarbon provide a great potential for enhanced oil recovery (EOR) owing to the outstanding physicochemical and optical properties for manipulation and detection of the water−rock−oil ternary system. Herein, CDs were synthesized with citric acid and urea via an easy and fast microwave-assisted carbonization method and characterized by atomic force microscopy (AFM), dynamic light scattering (DLS), ζ-potential, and thermogravimetric analysis (TGA) to prepare nanofluids as a tracing and flooding agent in the oil field. The as-synthesized CDs with a quantum yield of 35% demonstrated a long-time fluorescence emission stability in a brine solution with 50,000 ppm salt concentration for more than 3 months to be used as a tracer for on-site water monitoring to manage and optimize oil production by following the flow path in the oil reservoir. Moreover, the oil sweeping efficiency of CDs on the carbonate rock reservoir was evaluated by controlling the viscosity, wettability alteration, and interfacial tension, and a displacement mechanism was proposed by following the nanofluid flow on the micromodel pattern. Experimental results showed convenient water traceability and around 33% oil recovery for the prepared nanofluid with a low concentration of CDs (ca., 500 ppm).

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A critical review on selection of microemulsions or nanoemulsions for enhanced oil recovery

Cited by 61 publications

References 166 publications

Microfluidic Methods for Generation of Submicron Droplets: A Review

Microfluidic Methods for Generation of Submicron Droplets: A Review

Increasing Recovery Factor in Heavy Oil Fields Using Alternating Steam and Surfactant Injection

Development of a Green and Sustainable Nanofluid Based on Carbon Dots with Sensing Capability for Enhanced Oil Recovery

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