X-ray Microtomography Determination of Air−Water Interfacial Area−Water Saturation Relationships in Sandy Porous Media

2008 ◽  
Vol 42 (8) ◽  
pp. 2949-2956 ◽  
Author(s):  
Molly S. Costanza-Robinson ◽  
Katherine H. Harrold ◽  
Ross M. Lieb-Lappen
Keyword(s):  
Porous Media ◽  
Water Saturation ◽  
Interfacial Area ◽  
X Ray

Imaging and Resistivity Studies of Saturation Gradients in Two-Phase Flow in 3-D Porous Media

1996 ◽  
Vol 464 ◽  
Author(s):  
E. H. Kawamoto ◽  
Po-Zen Wong
Keyword(s):  
Computed Tomography ◽  
Porous Media ◽  
Two Phase Flow ◽  
Water Saturation ◽  
Glass Beads ◽  
Water Phase ◽  
Phase Flow ◽  
Two Phase ◽  
Vertical Column ◽  
X Ray

ABSTRACTWe have carried out x-ray radiography and computed tomography (CT) to study two-phase flow in 3-D porous media. Air-brine displacement was imaged for drainage and imbibition experiments in a vertical column of glass beads. By correlating water saturation Sw with resistance R, we find that there is a threshold saturation S* ≈ 0.2, above which R(SW) ∼ Sw−2, in agreement with the empirical Archie relation. This holds true for both drainage and imbibition with littlehysteresis, provided that Sw remains above S*. Should Sw drop below S* during drainage, R(Sw) rises above the Archie prediction, exhibiting strong hysteresis upon reimbibition. This behavior suggests a transition in the connectivity of the water phase near S*, possibly due to percolation effects.

Determination of the Air−Water Interfacial Area in Wet “Unsaturated” Porous Media

Langmuir ◽  
1996 ◽  
Vol 12 (8) ◽  
pp. 2041-2044 ◽  
Author(s):  
Milind V. Karkare ◽  
Tomlinson Fort
Keyword(s):  
Porous Media ◽  
Interfacial Area ◽  
Unsaturated Porous Media

Determination of Water-Oil Interfacial Area during 3-Phase Gravity Drainage in Porous Media

2000 ◽  
Vol 221 (2) ◽  
pp. 308-312 ◽  
Author(s):  
Charles E. Schaefer ◽  
David A. DiCarlo ◽  
Martin J. Blunt
Keyword(s):  
Porous Media ◽  
Interfacial Area ◽  
Gravity Drainage

Determination of Water Saturation in Relatively Dry Porous Media Using Gas-Phase Tracer Tests

2011 ◽  
Vol 10 (2) ◽  
pp. 634-641 ◽  
Author(s):  
M. Oostrom ◽  
G. D. Tartakovsky ◽  
T. W. Wietsma ◽  
M. J. Truex ◽  
J. H. Dane
Keyword(s):  
Porous Media ◽  
Gas Phase ◽  
Water Saturation ◽  
Tracer Tests

Determination of Air-Water Interfacial Area for Drainage and Imbibition in Unsaturated Porous Media

1999 ◽  
Author(s):  
Charles E. Schaefer ◽  
David A. DiCarlo ◽  
Paul V. Roberts ◽  
Martin J. Blunt
Keyword(s):  
Porous Media ◽  
Water Saturation ◽  
Pore Space ◽  
Sodium Dodecyl ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Interfacial Area ◽  
Gravity Drainage ◽  
Unsaturated Porous Media ◽  
Column Adsorption ◽  
Dodecyl Benzene Sulfonate

Abstract A new experimental method was developed to measure air-water interfacial area as a function of capillary pressure and water saturation in unsaturated porous media. The surfactant sodium dodecyl benzene sulfonate (SDBS) was used in equilibrium column adsorption experiments to determine the air-water interfacial area for water saturations (ml water/ml pore space) ranging from 0.05 to 1.0, and pressures ranging from 0 to 20 cm of water. A comparison was made between columns which were equilibrated under gravity drainage, versus columns equilibrated under secondary imbibition. Gravity drainage experiments showed the air-water interfacial area decreased linearly with saturation, while imbibition experiments showed a more complex non-monotonic relation to the saturation.

Mapping of Residual Oil and Water Saturation in Porous Media by Means of Digital X-ray Laminography

2006 ◽  
Vol 23 (3-4) ◽  
pp. 254-259 ◽  
Author(s):  
Eugene I. Palchikov ◽  
Yury A. Schemelinin ◽  
Anton G. Skripkin ◽  
Dmitry Yu. Mekhontsev ◽  
Nikolay A. Kondratiev
Keyword(s):  
Porous Media ◽  
Water Saturation ◽  
Residual Oil ◽  
X Ray
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