An Investigation of Phase-Behavior/Macroscopic-Bypassing Interaction in CO2 Flooding

Gardner, J.W.; Ypma, J.G.J.

doi:10.2118/10686-pa

Cited by 85 publications

(48 citation statements)

References 22 publications

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“…The stability of the diffusive boundary layer between the two states is studied using the QSSA. 12,13,17 It is possible to find an analytical expression for the dispersion relation σ (k) in the case of a sharp interface. This dispersion relation is given by several authors.…”

Section: Hele-shaw Problemmentioning

confidence: 99%

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The effect of interface movement and viscosity variation on the stability of a diffusive interface between aqueous and gaseous CO2

2013

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Carbon dioxide injected in an aquifer rises quickly to the top of the reservoir and forms a gas cap from where it diffuses into the underlying water layer. Transfer of the CO 2 to the aqueous phase below is enhanced due to the high density of the carbon dioxide containing aqueous phase. This paper investigates the behavior of the diffusive interface in an enclosed space in which initially the upper part is filled with pure carbon dioxide and the lower part with liquid. Our analysis differs from a conventional analysis as we take the movement of the diffusive interface due to mass transfer and the composition dependent viscosity in the aqueous phase into account. The same formalism can also be used to describe the situation when an oil layer is underlying the gas cap. Therefore we prefer to call the lower phase the liquid phase. In this paper we include these two effects into the stability analysis of a diffusive interface between CO 2 and a liquid in the gravity field. We identify the relevant bifurcation parameter as q = Ra, where is the width of the interface. This implies the (well known) scaling of the critical time ∼Ra −2 and wavelength ∼Ra −1 (The critical time t c and critical wavelength k c are defined as follows: σ (k) ≤ 0 ∀t ≤ t c ; equality only holds for t = t c and k = k c ). Inclusion of the interface upward movement leads to earlier destabilization of the system. Increasing viscosity for increasing CO 2 concentration stabilizes the system. The theoretical results are compared to bulk flow visual experiments using the Schlieren technique to follow finger development in aquifer sequestration of CO 2 . In the appendix, we include a detailed derivation of the dispersion relation σ (k) in the Hele-Shaw case [C. T. Tan and G. M. Homsy, Phys. Fluids 29, 3549-3556 (1986)] which is nowhere explicitly given. C 2013 AIP Publishing LLC. [http://dx

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Section: Hele-shaw Problemmentioning

confidence: 99%

“…This dispersion relation is given by several authors. 12,13,17 Numerically the dispersion relation was studied in the latter papers for t 0 > 0. To the best of our knowledge a detailed derivation of this dispersion relation does not exist in the literature.…”

Section: Hele-shaw Problemmentioning

confidence: 99%

The effect of interface movement and viscosity variation on the stability of a diffusive interface between aqueous and gaseous CO2

2013

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“…4 is a constant factor by which the solute and interstitial velocities differ and can be used to rescale the time variable. If we rescale the time variable in this way, we regain the convection dispersion equation used by Chouke in his linear stability analysis (Gardner and Ympa, 1984). Thus, the wavelengths of fingers would be unchanged and the growth rates would be altered by the time-stretching factor.…”

mentioning

confidence: 99%

Chemical imaging of multicomponent viscous fingering in chromatography

1997

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“…MMP is known to be affected by several factors such as reservoir temperature, oil composition and CO 2 impurities [9].…”

Section: Carbon Dioxidementioning

confidence: 99%

Comparison of MMP Between Slim Tube Test and Vanishing Interfacial Tension Test

Voon

Awang

2015

Icipeg 2014

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There are many tests used for determination of crude oil-CO 2 MMP, but there is no test that is taken as the standard for MMP measurement. However, there are two tests that are widely used which are vanishing interfacial tension (VIT) test and slim tube test. VIT test is fast but it is not accurate while slim tube test is exactly vice versa, it takes a lot of time for one MMP point; however, the result is much more accurate. This paper is going to discuss the accuracy of the MMP measurement for both tests at various scenario and observe the trends. Both tests are found to have very different principle in measuring MMP, and their results vary quite a bit. However, they are both very useful in proving the effectiveness of additives in reducing MMP.

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An Investigation of Phase-Behavior/Macroscopic-Bypassing Interaction in CO2 Flooding

Cited by 85 publications

References 22 publications

The effect of interface movement and viscosity variation on the stability of a diffusive interface between aqueous and gaseous CO2

The effect of interface movement and viscosity variation on the stability of a diffusive interface between aqueous and gaseous CO2

Chemical imaging of multicomponent viscous fingering in chromatography

Comparison of MMP Between Slim Tube Test and Vanishing Interfacial Tension Test

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