Two-phase modelling of the effects of pore-throat geometry on enhanced oil recovery

Chauhan, Ashi; Salehi, Fatemeh; Jalalifar, Salman; Clark, Sue B.

doi:10.1007/s13204-021-01791-x

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…In the Eulerian MF model, momentum, continuity and energy equations are separately solved for each phase (Khezzar et al 2015), allowing to model various forces, such as lift, drag, and virtual mass. On the other hand, the VOF model solves a single set of momentum equations although it uses a surface-tracking technique designed for two or more immiscible fluids (Chauhan et al 2021). In VOF, the phase volume fractions are obtained using accurate explicit or implicit time algorithms with higher-order advection schemes to resolve sharp interfaces between a pair of phases.…”

Section: Governing Equationsmentioning

confidence: 99%

Computational fluid dynamics modelling of air entrainment for a plunging jet

Salehi

Ajdehak

Hardalupas

2022

Chemical Engineering Research and Design

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Section: Governing Equationsmentioning

confidence: 99%

Computational fluid dynamics modelling of air entrainment for a plunging jet

Salehi

Ajdehak

Hardalupas

2022

Chemical Engineering Research and Design

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“…The geometry of the pore throat restricts the recovery of oil and gas. A small throat slows down the seepage velocity and reduces the recovery degree of oil and gas (Chauhan A. et al (2021) [21]). Shi Jingping (2003) believes that the narrow throat channels in the Fuyang reservoir in this study area and the small average pore radius cause problems such as high water injection pressure and la ow oil recovery rate during the development process [22].…”

Section: Introductionmentioning

confidence: 99%

Microscopic Distribution and Development Strategy of Residual Oil in Tight Sandstone

Zhang

Mu³

2023

Processes

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Pore and permeability are distributed discontinuously and unevenly in the dominant sedimentary model of the lateral accretion body inside the meandering river point bar of the Fuyang reservoir of the Yushulin oilfield. Based on the water flooding experiments of field core samples, the influence of pore permeability conditions on residual oil distribution type and water cutting rate was studied by using the microscopic visualization technology enabled through a photolithographically fabricated glass model. It is found that the residual oil in samples shows five discontinuous types, which are cluster, columnar, oil droplet, membrane, and blind end. In the stages with low, medium, and high water cutting rates, the proportion of clustered residual oil in the samples with different permeability is high, reflecting the situation that it is difficult for injected water to spread widely in tight oil reservoirs. With the decrease of permeability, the proportion of membrane and blind end residual oil gradually increases, which indicates that the thin pore throat can produce large restrictions on residual oil, resulting in residual oil enrichment. At the same time, the water flooding experiment was carried out by changing the displacement direction and periodic water injection. It was found that changing the displacement direction was beneficial to the recovery of residual oil in the thin pore throat and avoided the dominant seepage of injected water in the big pore throat, and the recovery rate was increased by more than 2.14%. Periodic water injection, which was conducive to adjusting the displacement pressure difference, reduced the constraining force of the throat on residual oil and increased the recovery rate by more than 3.98%. The actual well area with closed coring wells and dynamic production data is preferred for the application of experimental research results. Changing displacement direction and periodic water injection increased the residual oil recovery by more than 3%.

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“…Several papers have recently been published in which nanofluid flooding is proposed as an agent for EOR [ 27 , 28 , 29 , 30 , 31 ]. The effect of nanofluid flooding on enhancing oil extraction from porous media has also been reported.…”

Section: Introductionmentioning

confidence: 99%

Thermophysical Properties of Nanofluid in Two-Phase Fluid Flow through a Porous Rectangular Medium for Enhanced Oil Recovery

et al. 2022

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It is necessary to sustain energy from an external reservoir or employ advanced technologies to enhance oil recovery. A greater volume of oil may be recovered by employing nanofluid flooding. In this study, we investigated oil extraction in a two-phase incompressible fluid in a two-dimensional rectangular porous homogenous area filled with oil and having no capillary pressure. The governing equations that were derived from Darcy’s law and the mass conservation law were solved using the finite element method. Compared to earlier research, a more efficient numerical model is proposed here. The proposed model allows for the cost-effective study of heating-based inlet fluid in enhanced oil recovery (EOR) and uses the empirical correlations of the nanofluid thermophysical properties on the relative permeability equations of the nanofluid and oil, so it is more accurate than other models to determine the higher recovery factor of one nanoparticle compared to other nanoparticles. Next, the effect of nanoparticle volume fraction on flooding was evaluated. EOR via nanofluid flooding processes and the effect of the intake temperatures (300 and 350 K) were also simulated by comparing three nanoparticles: SiO2, Al2O3, and CuO. The results show that adding nanoparticles (<5 v%) to a base fluid enhanced the oil recovery by more than 20%. Increasing the inlet temperature enhanced the oil recovery due to changes in viscosity and density of oil. Increasing the relative permeability of nanofluid while simultaneously reducing the relative permeability of oil due to the presence of nanoparticles was the primary reason for EOR.

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Two-phase modelling of the effects of pore-throat geometry on enhanced oil recovery

Cited by 7 publications

References 24 publications

Computational fluid dynamics modelling of air entrainment for a plunging jet

Computational fluid dynamics modelling of air entrainment for a plunging jet

Microscopic Distribution and Development Strategy of Residual Oil in Tight Sandstone

Thermophysical Properties of Nanofluid in Two-Phase Fluid Flow through a Porous Rectangular Medium for Enhanced Oil Recovery

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