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Multiphase streaming potential in sandstones saturated with gas/brine and oil/brine during drainage and imbibition
Author(s) -
Vinogradov J.,
Jackson M. D.
Publication year - 2011
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2010gl045726
Subject(s) - imbibition , brine , geology , petroleum engineering , drainage , geochemistry , petrology , ecology , botany , germination , biology , physics , thermodynamics
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 CO 2 sequestration.