New insights into application of nanoparticles for water-based enhanced oil recovery in carbonate reservoirs

Gomari, Sina Rezaei; Omar, Yann Gorra Diallo; Amrouche, Farida; Islam, Meez; Xu, Donglai

doi:10.1016/j.colsurfa.2019.01.037

Cited by 38 publications

(27 citation statements)

References 22 publications

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“…A higher concentration of stearic acid therefore results in increased contact angle. Similar arguments about modifications in the wettability of calcite surfaces due to dissolved polar components in oil have been reported elsewhere [12,17,30,44].…”

Section: Contact Angle Measurementssupporting

confidence: 84%

“…The relationship between contact angle and the surface potential of calcium carbonate with different wetting behaviour was first investigated on powdered calcite modified to an oil-wet state using a model oil containing various concentrations of stearic acid. It should be noted that the adsorption of stearic acid onto the calcite surface is significantly affected by the presence of water, as shown in previous research [12,[40][41][42][43]. In this work, the adsorption of stearic acid was facilitated by the application of two concepts.…”

Section: Resultsmentioning

confidence: 63%

“…The extent of such changes depends on the fluid composition within which the oil-rock interaction takes place. It has been shown that there is strong adsorption of the acidic components of petroleum oil to calcite surfaces in both organic and aqueous systems, which leads to the transformation of the natural water-wetness of calcite surfaces to being oil-wet [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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A New Framework to Quantify the Wetting Behaviour of Carbonate Rock Surfaces Based on the Relationship between Zeta Potential and Contact Angle

et al. 2020

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This study introduces a new framework to quantify the wettability of powdered carbonate rock from existing correlations between zeta potential and contact angle. The new framework has the potential to be faster and cheaper than conventional approaches and could increase confidence in surface wetting quantification, since the results are insensitive to the inherent heterogeneity of rock surfaces. The obtained results from experiments were used to develop a set of equations for determining the carbonate rock contact angle from streaming potential data. The equations were validated for the evaluation of changes in the wettability of carbonate rock using different stearic acid oily solutions. The contact angles calculated from the proposed equations were then compared with measured values on the calcite surface. The results show that the proposed framework was able to quantify the wettability of carbonate rock with an acceptable range of error of about 4%–14%.

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Section: Contact Angle Measurementssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

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A New Framework to Quantify the Wetting Behaviour of Carbonate Rock Surfaces Based on the Relationship between Zeta Potential and Contact Angle

et al. 2020

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“…This condition becomes worse if natural fractures exist in the rock system where water is diverted to the fractures, hence bypassing significant oil volumes behind the water front. To solve this issue, several EOR methods such as smart water flooding, low salinity water flooding, water-alternating gas injection, polymer flooding, surfactant flooding and the use of nanoparticles may be adopted to overcome problems of water imbibition into the rock matrix [6][7][8][9][10][11][12][13][14] . Long payback periods, costly water treatment, the compatibility of water with rock surfaces, and low injectivity are among the problems encountered when using these methods.…”

Section: Introductionmentioning

confidence: 99%

New Insights into the Application of a Magnetic Field to Enhance Oil Recovery from Oil-Wet Carbonate Reservoirs

et al. 2019

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Given recent moves towards cleaner energy production, the application of environmentally friendly methods for EOR is considered to be an important research strategy in increasing oil production from existing hydrocarbon reservoirs. Therefore, in this paper, the application of a magnetic field is introduced for the first time as a novel and eco-friendly EOR technique for oil-wet carbonate reservoirs.The magnetic field is generated using three different magnet strengths of 3000, 4100 and 6000 Gauss (G). The impact of incremental increases in magnetic field on oil production from Austin chalk is investigated through measurements of contact angle, rock compaction and the spontaneous imbibition of water and the monitoring of rock surface streaming potential.Dynamic contact angle measurements on oil-wet chalk surfaces in the presence of a magnetic field show that the value of contact angle is reduced faster than when a magnetic field is absent, indicating a significant increase in water imbibition into rock pores. The results of spontaneous imbibition tests reveal significantly greater oil production during the imbibition process in the presence of a magnetic field at about 8.5 times that from oil-wet chalk.Monitoring of the streaming potential of the oil-wet rock surface in the presence and absence of a magnetic field indicates that a change in surface potential charge is responsible for the change in wettability of the surface from oil-wet to water-wet, hence improving water imbibition into carbonate rock which, in turn, can improve the oil displacement from pores.

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“…Задача исследования флюидов на масштабах от микро-до нанометров становится все более актуальной как для нефтегазовой индустрии (сланцевые углеводороды), так и для других технологических отраслей, в которых необходимо производить сепарацию флюидов, улавливание и хранение углекислого газа, исследовать различного рода течения флюидов в природных или искусственных наноразмерных структурах [1,2,3,4]. В частности, для нефтегазовой индустрии, в нетрадиционных коллекторах большая часть порового пространства представляет собой структуры размера нескольких десятков нанометров.…”

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Development of fast numerical density functional theory methods for studying the structures of nanoporous materials

Kanygin

2020

Preprint

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Density functional theory (DFT) has been actively used and developed recently.DFT is an efficient instrument for describing a wide range of nanoscale phenomena: wetting transition, capillary condensation, adsorption, and others. In this work, we suggest a method for obtaining the equilibrium fluid density in a pore using DFT without calculating the free energy variation -Variation Free Density Functional Theory (VF-DFT). This technique is applicable to explore fluids with complex interactions and speed up calculations for simple fluids. In VF-DFT the fluid density is represented as a decomposition over a limited set of basis functions and decomposition coefficients. To construct basis functions, we applied principal component analysis (PCA). PCA is used to extract the main patterns of the fluid densities in the nanopore. Decomposition coefficients are sought with stochastic gradient-free optimization methods, such as genetic algorithm (GA), particle swarm optimization (PSO) to minimize the free energy of the system. We also suggest the Hybrid Density Functional Theory (H-DFT) approach based on stochastic optimization methods and the classical Piccard iteration method to find the equilibrium fluid density in the pore. Combining these methods helps to significantly speed up the calculations of equilibrium density in the system without losing quality. We considered two fluids: nitrogen at the temperature of 𝑇 = 77.4 K and argon 𝑇 = 87.3 K, at the pore width of 3.6 nm. VF-DFT, H-DFT with different optimization algorithms were compared with each other and with classical Piccard iteration technique. Furthermore, the problem of calculation pore size distribution for nanoporous materials is discussed. The Tikhonov regularization method was applied to reconstruct of pore size distributions from experimental data on low-temperature adsorption. This method is proved to be very sensitive to the quality of adsorption data.

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New insights into application of nanoparticles for water-based enhanced oil recovery in carbonate reservoirs

Cited by 38 publications

References 22 publications

A New Framework to Quantify the Wetting Behaviour of Carbonate Rock Surfaces Based on the Relationship between Zeta Potential and Contact Angle

A New Framework to Quantify the Wetting Behaviour of Carbonate Rock Surfaces Based on the Relationship between Zeta Potential and Contact Angle

New Insights into the Application of a Magnetic Field to Enhance Oil Recovery from Oil-Wet Carbonate Reservoirs

Development of fast numerical density functional theory methods for studying the structures of nanoporous materials

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