Study of rock-solution interaction and its effect on Archie's Law

Journal Article · Fri Oct 01 04:00:00 EDT 1976 · IEEE Trans. Geosci. Electron.; (United States)

DOI:https://doi.org/10.1109/TGE.1976.294428· OSTI ID:7336120

Piwinskii, A J; Weed, H C

The electrical conductivity (sigma) of cylindrical cores of 25.4-mm diameter and length Pictured Cliffs sandstone (permeability range, 7 x 10/sup -4/-4 x 10/sup -1/ millidarcy (md); porosity range, 3.8-4.9 percent) was measured at a frequency of 1 kHz under ambient conditions after saturation in tap water. Kinetics of rock-water interaction and the effect of Soxhlet extraction on the sigma of the rock were also investigated. Formation factors (F) and the sigma display time-dependent behavior up to 4500 h. Smooth asymmetrical conductivity maxima occur for all samples at times which increase with increasing porosity. The observed time-dependence of F in Archie's Law (F = phi/sup -/n/, phi = porosity, n = a parameter) is influenced by the kinetics of ion transport between the Pictured Cliffs sandstone and the aqueous pore fluid. Soxhlet extraction lowers F, but does not significantly change its time dependence.

• Research Organization: Univ. of California, Livermore
• OSTI ID: 7336120
• Journal Information: IEEE Trans. Geosci. Electron.; (United States), Journal Name: IEEE Trans. Geosci. Electron.; (United States) Vol. GE-14:4; ISSN IEGEA
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
DRILL CORES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
KINETICS
NEW MEXICO
NORTH AMERICA
PERMEABILITY
PHYSICAL PROPERTIES
POROSITY
ROCK-FLUID INTERACTIONS
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SOUTHWEST REGION
TIME DEPENDENCE
USA