Multiphase streaming potential in sandstones saturated with gas/brine and oil/brine during drainage and imbibition

J. Vinogradov, M. D. Jackson

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Abstract

We have measured the streaming potential in water-wet sandstones during both drainage and imbibition, and demonstrate that it behaves differently in oil/brine and gas/brine displacements. During drainage, the streaming potential remains significantly greater than zero at the irreducible water saturation in oil/brine displacements, but falls to zero in gas/brine displacements. During imbibition, the streaming potential at partial saturation in oil/brine displacements exceeds that measured at saturation, but not in gas/brine experiments. Our results have application to streaming potential measurements in the vadose zone, hydrocarbon reservoirs, contaminated aquifers and during CO2 sequestration.

Original languageEnglish
Article numberL01301
JournalGeophysical Research Letters
Volume38
Issue number1
DOIs
StatePublished - 16 Jan 2011
Externally publishedYes

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