Experimental study of water-based nanofluid alternating gas injection as a novel enhanced oil-recovery method in oil-wet carbonate reservoirs

Moradi, Babak; Pourafshary, Peyman; Jalali, F.; Mohammadi, Mohsen; Emadi, Mohammad Ali

doi:10.1016/j.jngse.2015.07.009

Cited by 90 publications

(39 citation statements)

References 21 publications

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“…On the other hand, Liu studied the effect of silica nanoparticles on the permeability reduction of various cores during nanoparticle‐stabilized foam injection. The results indicated that the silica nanoparticles had little adsorption on limestone surface (this was also reported by Moradi et al), but the core permeability has not changed. In the case of dolomite core, the adsorption of nanoparticles caused permeability reduction.…”

Section: Resultssupporting

confidence: 78%

“…In addition, nano‐silica was located and adsorbed on the interface between oil and water and reduced the IFT between oil and water. At first, the IFT between water and oil was 13.69 mN/m, but after adding nanoparticles to the water phase the IFT between the aqueous phase and oil was decreased about 22 % to 10.62 mN/m . The amount of gas production decreased during NWAG injection, which delayed the gas breakthrough time.…”

Section: Resultsmentioning

confidence: 99%

“…The application of nanoparticles for enhancing the oil recovery from reservoirs has been recommended by different researchers . Nanoparticle characteristics are affected by their surface energies and because of that, nanoparticle deposition on a solid rock can meaningfully alter the surface energy and wettability of the rock.…”

Section: Introductionmentioning

confidence: 99%

“…Core‐flooding tests, SEM analysis, contact angle, and IFT measurements were conducted and studied in the author's previous paper . To further investigate the enhancement mechanisms, several experiments such as viscosity measurement of produced oil, probability of foam generation, and gas production measurement are implemented in this work.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Nanoparticles on Gas Production, Viscosity Reduction, and Foam Formation during Nanofluid Alternating Gas Injection in Low and High Permeable Carbonate Reservoirs

et al. 2016

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Some carbonate reservoirs are low‐permeable and mixed‐wet to oil‐wet. Application of enhanced recovery methods to decrease residual oil saturation is the main challenge in such reservoirs. Water‐flooding is not an appropriate method to improve the recovery due to the wettability of carbonate reservoirs. Water alternating gas (WAG) injection is used as another method but it faces some problems. To enhance the performance of the WAG method, the wettability of rock should be changed and mobility of the injected gas should be controlled. In our previous study (Moradi et al.[32]), to improve the WAG‐EOR process and overcome the problems, we developed the nanofluid‐alternating gas (NWAG) approach by adding nanoparticles to the aqueous phase. Our study indicated that the NWAG process could improve oil recovery in comparison to the conventional WAG method in different core samples with different lithology and permeability. In this study, core‐flooding experiments, dynamic foam generation, and viscosity measurement were performed to investigate the effect of nanoparticles on gas production, viscosity reduction, and possibility of foam formation in the NWAG process. The results indicated that the gas production was decreased in the NWAG process. In addition, viscosity of produced oil was lower in the NWAG process; CO2 dissolved in the oil and led to oil swelling and oil viscosity reduction. Oil recovery was higher in the samples with lower permeability due to the formation of foam in the porous media. Foam formation increased viscosity and controlled mobility, which led to better sweep efficiency.

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Section: Resultssupporting

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Nanoparticles on Gas Production, Viscosity Reduction, and Foam Formation during Nanofluid Alternating Gas Injection in Low and High Permeable Carbonate Reservoirs

et al. 2016

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“…Diversas variantes já foram aplicadas, incluindo o uso de diferentes gases (WAG--HC, WAG--CO2, WAG--N2); injeção simultânea (SWAG); injeção WAG híbrida (HWAG) e injeção auxiliada por espuma (FAWAG). Aborda--se recentemente, a injeção alternada de água de baixa salinidade e gás CO2 (LS--WAG--CO2) (Teklu, Alameri, Graves, Kazemi, & Al--Sumaiti, 2016) e a injeção alternada nanofluido e gás (NWAG) (Moradi, Pourafshary, Jalali, Mohammadi, & Emadi, 2015).…”

Section: Introductionunclassified

Injeção Alternada Água-Gás Co2: Influência De Características De Reservatório E De Parâmetros Operacionais

Formentin

Schiozer

Moreno

2017

HOLOS

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RESUMOInjeção alternada de água e gás (WAG) é proposta para melhorar a eficiência de varredura do óleo em relação à injeção contínua de gás ou água. Recentemente, a injeção WAG--CO 2 ganhou notoriedade por diversas razões, entre elas a possibilidade de (1) melhorar a recuperação do óleo por proporcionar uma condição próxima a de miscibilidade ou de miscibilidade no reservatório, (2) utilizar o gás CO 2 associado à produção de óleo para reinjeção, e (3) armazenar um gás de efeito estufa. O principal objetivo desde estudo é examinar a influência de características de reservatório e parâmetros operacionais no processo WAG--CO 2 a fim de introduzir a dinâmica desse processo no contexto dos desafios atuais. Doze tópicos principais foram analisados: seis características do reservatório, que possuem grau de incerteza relacionado com a maturidade do reservatório; e seis parâmetros operacionais, que são controlados pelos operadores. As pesquisas recentes mostram um melhor entendimento da distribuição e do comportamento dos fluidos em reservatório como o caso do fenômeno de histerese, entretanto, dados experimentais ainda são críticos para a modelagem direta do comportamento trifásico. Dentre os parâmetros operacionais, o controle sobre a pressão e sobre a formação de escala é fator crítico para a melhora da recuperação e para a manutenção da injetividade e da produtividade dos poços. Faixas usuais de aplicação para alguns parâmetros foram levantadas. Conclui--se com uma lista das principais referências recentes estudadas sobre o tema, que podem fundar estudos mais aprofundados sobre os temas específicos. PALAVRAS--CHAVE:Injeção Alternada Água -Gás CO 2 , Condições de Reservatório, Parâmetros Operacionais. WATER--ALTERNATING--GAS--CO 2 INJECTION: INFLUENCE OF RESERVOIR CHARACTERISTICS AND OPERATING PARAMETERS ABSTRACTWater--Alternating--Gas--CO 2 injection (WAG--CO 2 ) is a technique to improve the oil sweep efficiency compared to gas or water continuous injection. Recently, WAG--CO 2 injection gained notoriety for various reasons, including the possibility of (1) improving oil recovery by providing a condition of miscibility or close to miscibility in the reservoir; (2) using the CO 2 gas associated with the production oil for reinjection; and (3) storing a greenhouse gas. The main objective of this study is to examine the influence of reservoir characteristics and operational parameters in WAG--CO 2 process to introduce its dynamics in the context of the current challenges. Twelve main topics are analyzed: six characteristics of the reservoir, which have degrees of uncertainty related to the maturity of the reservoir; and six operational parameters, which are controlled by operators. Recent research shows a better understanding of the distribution and behavior of reservoir fluids as the case of hysteresis phenomenon. However, experimental data are also critical to the direct modeling of phase behavior. Among the operating parameters, control over the pressure and the formation of scale is critical for the improvement of...

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Valorization of Agricultural Wastes: A Step Toward Adoption of Smart Green Materials with Additional Benefit of Circular Economy

Jeet

Kumar

Anushree

et al. 2022

Handbook of Biomass Valorization for Industrial Applications

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Experimental study of water-based nanofluid alternating gas injection as a novel enhanced oil-recovery method in oil-wet carbonate reservoirs

Cited by 90 publications

References 21 publications

Effects of Nanoparticles on Gas Production, Viscosity Reduction, and Foam Formation during Nanofluid Alternating Gas Injection in Low and High Permeable Carbonate Reservoirs

Effects of Nanoparticles on Gas Production, Viscosity Reduction, and Foam Formation during Nanofluid Alternating Gas Injection in Low and High Permeable Carbonate Reservoirs

Injeção Alternada Água-Gás Co2: Influência De Características De Reservatório E De Parâmetros Operacionais

Valorization of Agricultural Wastes: A Step Toward Adoption of Smart Green Materials with Additional Benefit of Circular Economy

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