Dependence of CO2 -brine interfacial tension on aquifer pressure, temperature and water salinity

Bachu, Stefan; Bennion, D.B.

doi:10.1016/j.egypro.2009.02.098

Cited by 103 publications

(72 citation statements)

References 10 publications

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“…It decreases linearly at low pressures, then reaches to plateau and constant value at high pressures. However, the similar trend has been also presented by different researchers for the water-CO 2 systems [32,[59][60][61][62]. The IFT variation observed versus pressure under specified temperature for the NaCl solution-CO 2 system is similar to that presented already by other authors [63,64].…”

Section: Effect Of Pressure On the Brine-crude Oil-co 2 Iftsupporting

confidence: 84%

The influence of spreading coefficient on carbonated water alternating gas injection in a heavy crude oil

Riazi

Golkari

2016

Fuel

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Section: Effect Of Pressure On the Brine-crude Oil-co 2 Iftsupporting

confidence: 84%

The influence of spreading coefficient on carbonated water alternating gas injection in a heavy crude oil

Riazi

Golkari

2016

Fuel

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“…The results of these studies could greatly enhance fundamental knowledge that would benefit CO 2 sequestration studies if the results are appropriately compared and characterized. CO 2 is in a supercritical state at sequestration reservoir operations; relatively small variations in pressure, temperature, and salinity of the W phase have significant effects on the CO 2 density, CO 2 viscosity, and interfacial tension exhibited by the supercritical CO 2 -brine system [6][7][8]. The variability of fluid properties complicates predictions of flow patterns and displacement mechanisms.…”

Section: Introductionmentioning

confidence: 98%

Efficiently engineering pore-scale processes: The role of force dominance and topology during nonwetting phase trapping in porous media

Herring

Andersson

Schlüter

et al. 2015

Advances in Water Resources

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a b s t r a c tWe investigate trapping of a nonwetting (NW) phase, air, within Bentheimer sandstone cores during drainage-imbibition flow experiments, as quantified on a three dimensional (3D) pore-scale basis via x-ray computed microtomography (X-ray CMT). The wetting (W) fluid in these experiments was deionized water doped with potassium iodide (1:6 by weight). We interpret these experiments based on the capillary-viscosity-gravity force dominance exhibited by the Bentheimer-air-brine system and compare to a wide range of previous drainage-imbibition experiments in different media and with different fluids. From this analysis, we conclude that viscous and capillary forces dominate in the Bentheimer-air-brine system as well as in the Bentheimer-supercritical CO 2 -brine system. In addition, we further develop the relationship between initial (post-drainage) NW phase connectivity and residual (post-imbibition) trapped NW phase saturation, while also taking into account initial NW phase saturation and imbibition capillary number. We quantify NW phase connectivity via a topological measure as well as by a statistical percolation metric. These metrics are evaluated for their utility and appropriateness in quantifying NW phase connectivity within porous media. Here, we find that there is a linear relationship between initial NW phase connectivity (as quantified by the normalized Euler number,v) and capillary trapping efficiency; for a given imbibition capillary number, capillary trapping efficiency (residual NW phase saturation normalized by initial NW phase saturation) can decrease by up to 60% as initial NW phase connectivity increases from low connectivity (v % 0) to very high connectivity (v % 1). We propose that multiphase fluid-porous medium systems can be efficiently engineered to achieve a desired residual state (optimal NW phase saturation) by considering the dominant forces at play in the system along with the impacts of NW phase topology within the porous media, and we illustrate these concepts by considering supercritical CO 2 sequestration scenarios.

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“…Numerous studies have been conducted to obtain CO 2 -water IFT data by carrying out laboratory measurements [5,[7][8][9][10][11][12][13][14][15][16][17][18][19]. Among these experimental studies, pendant drop and capillary rise methods are two techniques commonly used for measuring CO 2 -brine IFT at high pressures and elevated temperatures [14].…”

Section: Introductionmentioning

confidence: 99%

Estimation of CO2–brine interfacial tension using an artificial neural network

Zhang

Feng

Wang

et al. 2016

The Journal of Supercritical Fluids

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Dependence of CO2 -brine interfacial tension on aquifer pressure, temperature and water salinity

Cited by 103 publications

References 10 publications

The influence of spreading coefficient on carbonated water alternating gas injection in a heavy crude oil

The influence of spreading coefficient on carbonated water alternating gas injection in a heavy crude oil

Efficiently engineering pore-scale processes: The role of force dominance and topology during nonwetting phase trapping in porous media

Estimation of CO2–brine interfacial tension using an artificial neural network

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