The effect of capillary pressure on the saturation equation of two‐phase flow in porous media

Goumiri, Imène; Prévost, Jean‐Hérve; Preisig, Matthias

doi:10.1002/nag.1022

Cited by 11 publications

(13 citation statements)

References 10 publications

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“…The results show that capillary pressure increase the flow rate of CO 2 . The result corresponds to the finding by Goumiri et al [15], 2011. The existence of gravity cause the segregation of CO 2 and brine due to the difference of density between them.…”

Section: Introductionsupporting

confidence: 58%

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Capillary pressure and buoyancy effects in the CO₂/brine flow system

Pau¹,

Pao²,

Yong³

et al. 2014

Energy and Sustainability V

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The annual emission of CO 2 from human activities has exceeded the absorption abilities of nature. Carbon capture and geological storage is a solution that is able to combat the problem of excessive CO 2 release to the atmosphere, which endangers the lives of humans and all living things. Saline aquifer, which has a high permeability and storage capacity, has become a subject of interest as a CO 2 storage media. The flow of CO 2 into the aquifer initially occupied by saline water is the subject of study in this paper. Particularly, the effects of two significant parameters -capillary pressure and gravitational force have been considered. To solve the two phase flow equation, we have implemented the currently developed mixed and hybrid finite element method. The results show that capillary pressure enhance the flow of CO 2 whereas gravity force causes phase segregation with the less dense CO 2 flowing upward due to buoyancy forces.

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Section: Introductionsupporting

confidence: 58%

“…According to [13], capillary pressure curve has a strong influence on the behaviour of the solution. Capillary pressure is the pressure difference between two fluids that form an interface [14,15]. Proportional to the surface tension, the capillary pressure for water gas system is defined as [14],…”

Section: Capillarity and Capillary Pressurementioning

confidence: 99%

Capillary pressure and buoyancy effects in the CO₂/brine flow system

Pau¹,

Pao²,

Yong³

et al. 2014

Energy and Sustainability V

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“…By comparing Manuscript Click here to download Manuscript: SpectralMcwhorterRevised.tex Click here to view linked References with the Buckley-Leverett equation, the MSE can be used to evaluate the impact of capillary pressure, similar to work done by Goumiri et al [5]. The MSE also forms the starting point of a new set of semi-analytical solutions to consider hydrodynamic dispersion and adsoprtion of solutes in two-phase flow [see 14,15].…”

mentioning

confidence: 99%

A pseudospectral approach to the McWhorter and Sunada equation for two-phase flow in porous media with capillary pressure

Bjørnarå

Mathias

2013

Comput Geosci

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Response to Reviewers: My comments to the reviewers are in the attached word-document, "comments reviewers final.docx". Powered by Editorial Manager® and Preprint Manager® from Aries Systems CorporationComputational Geoscience manuscript No. The former ignores capillary pressure and can be solved analytically. The latter has traditionally been formulated as an iterative integral solution, which suffers from convergence problems as the injection saturation approaches unity. Here an alternative approach is presented that solves the MSE using a pseudospectral Chebyshev differentiation matrix. The resulting pseudospectral solution is compared to results obtained from the original integral implementation and the Buckley-Leverett limit, when the capillary pressure becomes negligible. A self-contained MATLAB code to implement the new solution is provided within the manuscript.The new approach offers a robust and accurate method for verification of numerical codes solving two-phase flow with capillary pressure.

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“…Contradictory, when we include the effects of capillary pressure in the flow of CO2, the saturation of CO2 within the area of study is about 0.4 to 0.6 after 300 days. From here, capillary pressure will accelerate the migration of CO2 plume at the early time injection as discussed in [14].…”

Section: Resultsmentioning

confidence: 92%

Effects of Capillary Pressure on Multiphase Flow during CO₂Injection in Saline Aquifer

Pau

Pao

Yong

et al. 2014

MATEC Web of Conferences

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Abstract. This paper focused on supercritical CO2 injection into saline aquifer, in particular its capillarity's effects on the plume migration, reservoir pressure alteration and CO2 flux density. The numerical method used to solve the incompressible two-phase flow equations is based on the mimetic method, which conserves the mass and fluxes simultaneously. The investigation showed that exclusion of capillarity can greatly underestimate the CO2 plume migration and resulted in distinctive reservoir pressure distribution. It is found that capillarity showed no significant effect on the flux intensity of CO2.

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The effect of capillary pressure on the saturation equation of two‐phase flow in porous media

Cited by 11 publications

References 10 publications

Capillary pressure and buoyancy effects in the CO₂/brine flow system

Capillary pressure and buoyancy effects in the CO₂/brine flow system

A pseudospectral approach to the McWhorter and Sunada equation for two-phase flow in porous media with capillary pressure

Effects of Capillary Pressure on Multiphase Flow during CO₂Injection in Saline Aquifer

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The effect of capillary pressure on the saturation equation of two‐phase flow in porous media

Cited by 11 publications

References 10 publications

Capillary pressure and buoyancy effects in the CO2/brine flow system

Capillary pressure and buoyancy effects in the CO2/brine flow system

A pseudospectral approach to the McWhorter and Sunada equation for two-phase flow in porous media with capillary pressure

Effects of Capillary Pressure on Multiphase Flow during CO2Injection in Saline Aquifer

Contact Info

Product

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Capillary pressure and buoyancy effects in the CO₂/brine flow system

Capillary pressure and buoyancy effects in the CO₂/brine flow system

Effects of Capillary Pressure on Multiphase Flow during CO₂Injection in Saline Aquifer