Advective-diffusive-reactive solute transport due to non-Newtonian fluid flows in a fracture surrounded by a tight porous medium

Dejam, Morteza

doi:10.1016/j.ijheatmasstransfer.2018.09.061

Cited by 129 publications

(89 citation statements)

References 57 publications

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“…In recent years, nanoconfined water flow behavior has become a heat and attractive research topic, which is the key underlying physical mechanism in a great deal of industries, encompassing water purification, energy storage material fabrication, hydraulic fracturing within petroleum engineering, and so on. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] However, although current experimental technology and theoretical research have been significantly advanced, nanoconfined water transport capacity is still unclear, which is controlled by multiple effects simultaneously. 15,16 Owing to its complexity in theoretical view and wide application scope, investigations regarding water flow within nanopores share vast theoretical interests and potential commercial values.…”

Section: Introductionmentioning

confidence: 99%

Effect of pore geometry on nanoconfined water transport behavior

Sun

Shi

et al. 2019

AIChE Journal

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Different pore shapes correspond to different interaction strengths between pore surface and molecules, which will result in discrepancy of nanoconfined water transport capacity. In this article, complex nanoscale pore shapes are represented by ellipses, which possess an excellent shape-variation physical property, that is, ellipses can gradually transition from circles to slit-like cross-sections by manipulating aspect ratio from 1 to maxima. Moreover, capturing water slip phenomenon and spatially variation of water viscosity, an analytical model for water transport capacity through elliptical nanopores is developed. Results show that (a) water slip effect plays a limited positive role at hydrophilic environment and a strong positive role at hydrophobic environment;(b) nanopores with more flat geometry feature will possess smaller enhance factor at hydrophilic environment; (c) spatially viscosity distribution is a negative factor when contact angle is lower than about 130 and turns to a positive factor when contact angle is higher than about 130 . K E Y W O R D Snanoconfined water flow, various pore shapes, water slip phenomenon, water viscosity

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Section: Introductionmentioning

confidence: 99%

Effect of pore geometry on nanoconfined water transport behavior

Sun

Shi

et al. 2019

AIChE Journal

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“…The displacement (microscopic) efficiency consists of the ability of the displacing fluid to sweep out crude oil in the reservoir, horizontally and vertically, toward the production wells (Kamal et al 2015). This can be achieved by controlling the mobility ratio between oil and injected fluid (Dejam 2018(Dejam , 2019. For this purpose, polymers as highly viscous solutions are usually injected into oil reservoirs (Saboorian-Jooybari et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation into l-Arg and l-Cys eco-friendly surfactants in enhanced oil recovery by considering IFT reduction and wettability alteration

et al. 2019

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Surfactant flooding is an important technique used to improve oil recovery from mature oil reservoirs due to minimizing the interfacial tension (IFT) between oil and water and/or altering the rock wettability toward water-wet using various surfactant agents including cationic, anionic, non-ionic, and amphoteric varieties. In this study, two amino-acid based surfactants, named lauroyl arginine (l-Arg) and lauroyl cysteine (l-Cys), were synthesized and used to reduce the IFT of oil-water systems and alter the wettability of carbonate rocks, thus improving oil recovery from oil-wet carbonate reservoirs. The synthesized surfactants were characterized using Fourier transform infrared spectroscopy and nuclear magnetic resonance analyses, and the critical micelle concentration (CMC) of surfactant solutions was determined using conductivity, pH, and turbidity techniques. Experimental results showed that the CMCs of l-Arg and l-Cys solutions were 2000 and 4500 ppm, respectively. It was found that using l-Arg and l-Cys solutions at their CMCs, the IFT and contact angle were reduced from 34.5 to 18.0 and 15.4 mN/m, and from 144° to 78° and 75°, respectively. Thus, the l-Arg and l-Cys solutions enabled approximately 11.9% and 8.9% additional recovery of OOIP (original oil in place). It was identified that both amino-acid surfactants can be used to improve oil recovery due to their desirable effects on the EOR mechanisms at their CMC ranges.

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“…The distribution of induced fracture spacing is generally too complex to give a quantitative representation [34,35]. The induced fracture spacing distribution commonly used in geology is mainly in the form of uniform, linear, normal and exponential functions [36,37].…”

Section: Introductionmentioning

confidence: 99%

Water-Gas Two-Phase Flow Behavior of Multi-Fractured Horizontal Wells in Shale Gas Reservoirs

Sheng

2019

Processes

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Hydraulic fracturing is a necessary method to develop shale gas reservoirs effectively and economically. However, the flow behavior in multi-porosity fractured reservoirs is difficult to characterize by conventional methods. In this paper, combined with apparent porosity/permeability model of organic matter, inorganic matter and induced fractures, considering the water film in unstimulated reservoir volume (USRV) region water and bulk water in effectively stimulated reservoir volume (ESRV) region, a multi-media water-gas two-phase flow model was established. The finite difference is used to solve the model and the water-gas two-phase flow behavior of multi-fractured horizontal wells is obtained. Mass transfer between different-scale media, the effects of pore pressure on reservoirs and fluid properties at different production stages were considered in this model. The influence of the dynamic reservoir physical parameters on flow behavior and gas production in multi-fractured horizontal wells is studied. The results show that the properties of the total organic content (TOC) and the inherent porosity of the organic matter affect gas production after 40 days. With the gradual increase of production time, the gas production rate decreases rapidly compared with the water production rate, and the gas saturation in the inorganic matter of the ESRV region gradually decreases. The ignorance of stress sensitivity would cause the gas production increase, and the ignorance of organic matter shrinkage decrease the gas production gradually. The water film mainly affects gas production after 100 days, while the bulk water has a greater impact on gas production throughout the whole period. The research provides a new method to accurately describe the two-phase fluid flow behavior in different scale media of fractured shale gas reservoirs.

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Advective-diffusive-reactive solute transport due to non-Newtonian fluid flows in a fracture surrounded by a tight porous medium

Cited by 129 publications

References 57 publications

Effect of pore geometry on nanoconfined water transport behavior

Effect of pore geometry on nanoconfined water transport behavior

Experimental investigation into l-Arg and l-Cys eco-friendly surfactants in enhanced oil recovery by considering IFT reduction and wettability alteration

Water-Gas Two-Phase Flow Behavior of Multi-Fractured Horizontal Wells in Shale Gas Reservoirs

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