Determination of Relative Permeability for Steam-Water Flow in Porous Media

Ambusso, Willis; Satik, Cengiz; Horne, Roland N.

doi:10.2118/36682-ms

Cited by 7 publications

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“…In addition, the numerical simulations were used to estimate the time required for the experiments to reach steady state conditions. These simulations were described in Ambusso et al (1996).…”

Section: Numerical Resultsmentioning

confidence: 99%

Stanford geothermal program. Final report, July 1990--June 1996

1998

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Section: Numerical Resultsmentioning

confidence: 99%

Stanford geothermal program. Final report, July 1990--June 1996

1998

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“…The experimental determination of steam and liquid water relative permeabilities is a central target of the Stanford Geothermal Program. Flow-through experiments on Berea sandstones were performed by Ambusso (1996), Satik (1998) and Mahiya (1999) using X-ray computer tomography to determine the steam saturation profiles. In a different approach, numerical simulation was used by Guerrero et al (1998) to infer relative permeabilities of Berea sandstones, based on temperature, pressure, and steam saturation data obtained from dynamic boiling experiments performed by .…”

Section: Chaptermentioning

confidence: 99%

Inferring immobile and in-situ water saturation from laboratory and field measurements

Belen¹

2000

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Analysis of experimental data and numerical simulation results of dynamic boiling experiments revealed that there is an apparent correlation between the immobile water saturation and the shape of the steam saturation profile. An elbow in the steam saturation profile indicates the sudden drop in steam saturation that marks the transition from steam to two-phase conditions inside the core during boiling. The immobile water saturation can be inferred from this elbow in the steam saturation profile. Based on experimental results obtained by Satik (1997), the inferred immobile water saturation of Berea sandstone was found to be about 0.25, which is consistent with results of relative permeability experiments reported by Mahiya (1999). However, this technique may not be useful in inferring the immobile water saturation of less permeable geothermal rocks because the elbow in the steam saturation profile is less prominent. Models of vapor and liquid-dominated geothermal reservoirs that were developed based on Darcy's law and material and energy conservation equations proved to be useful in inferring the in-situ and immobile water saturations from field measurements of cumulative mass production, discharge enthalpy, and downhole temperature. Knowing rock and fluid properties, and the difference between the stable initial, To, and dry-out, Td, downhole temperatures, the in-situ and immobile water saturations of vapor-dominated reservoirs can be estimated. On the other hand, the in-situ and immobile water saturations, and the change in mobile water content of liquid-dominated reservoirs can be inferred from the cumulative mass production, Am, and enthalpy, h', data. Comparison with two-phase, radial flow, numerical simulation results confirmed the validity and usefulness of these models.

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Geothermal Fluids in Porous Media

Bian

Cheng

2015

Handbook of Clean Energy Systems

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Geothermal energy is clean and renewable. It is important to understand the fundamental mechanisms and basic approaches to measure the parameters of fluids (steam and water) flowing in porous media. In this article, the techniques for measuring slip factor of steam, steam‐water relative permeability, and steam‐water capillary pressure were addressed. Also included were the mathematical models to calculate these parameters.

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Determination of Relative Permeability for Steam-Water Flow in Porous Media

Cited by 7 publications

References 0 publications

Stanford geothermal program. Final report, July 1990--June 1996

Stanford geothermal program. Final report, July 1990--June 1996

Inferring immobile and in-situ water saturation from laboratory and field measurements

Geothermal Fluids in Porous Media

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