Table 1.

Main experimental results obtained from 69 core samples of the Fontainebleau sandstone: ΔF and Δσs represent twice the standard deviations of formation factor and surface conductivity, respectively. In this table, r represents the correlation coefficient describing the quality of the fit of the electrical conductivity data using equation 4.

Sampleϕ (fraction)k (m2)F (-)σs (104Sm1)ΔF (-)Δσs(104Sm1)r (-)
Z01X0.0661.82×101452.381.541.130.090.99984
Z01Y0.0543.35×101575.391.031.710.070.99983
Z01Z0.0576.30×101599.560.921.240.030.99995
Z02X0.0752.11×101449.121.571.010.090.99985
Z02Y0.0694.97×101439.851.780.990.130.99979
Z02Z0.0502.49×101584.631.101.470.050.99990
Z03Y0.1061.54×101338.221.631.060.140.99975
Z03Z10.1021.55×101348.141.491.180.110.99980
Z03Z20.0971.33×101338.521.780.690.090.99989
Z04X0.0681.02×101479.651.050.800.030.99997
Z04Y10.2023.40×101211.354.370.440.550.99950
Z04Y20.0671.21×1014103.011.031.290.030.99995
Z04Z10.2223.56×101210.105.140.300.490.99970
Z04Z20.0731.09×1014129.591.180.890.020.99998
Z05Y0.0844.23×101451.451.900.990.100.99987
Z06X0.0782.29×101457.231.841.490.130.99976
Z06Y0.0855.81×101457.661.650.820.060.99993
Z06Z0.0851.72×101345.871.991.520.180.99962
Z07X0.1681.64×101215.354.040.350.280.99982
Z07Z0.1641.69×101215.203.350.310.220.99987
Z08X0.1591.77×101217.073.260.630.370.99955
Z08Y0.1551.54×101219.214.130.470.290.99979
Z08Z0.1511.22×101219.833.320.600.300.99969
Z09Y0.2073.12×101211.034.800.360.490.99966
Z09Z0.2124.52×101210.165.500.360.610.99959
Z10X0.1741.35×101217.064.030.370.260.99984
Z10Y0.1709.81×101319.223.880.560.330.99971
Z100.1587.02×101320.133.210.490.240.99980
Z13X10.1001.90×101340.802.470.780.130.99987
Z13X20.1591.28×101218.054.020.510.330.99974
Z13Y0.1591.19×101217.183.880.410.270.99981
Z13Z0.1701.09×101217.882.790.560.280.99969
Z14X0.0451.90×1015135.520.964.780.090.99956
Z14Y0.0702.42×1014117.311.023.150.070.99975
Z15X0.0921.82×101327.711.980.930.210.99963
Z15Y0.1091.49×101332.381.770.770.130.99981
Z16X0.0691.57×101438.791.951.030.150.99976
Z16Z0.0692.36×101432.722.590.730.160.99983
Z17X10.1801.74×101214.642.990.490.330.99964
Z17X20.1882.28×101216.344.120.540.400.99962
Z17Y0.1892.18×101212.752.810.480.380.99955
Z17Z0.1943.39×101212.672.280.360.250.99975
Z18X0.0521.20×1015182.500.575.170.040.99972
Z18Y0.0471.30×1015180.860.612.220.020.99995
Z18Z0.0595.30×101588.181.261.430.050.99991
Z19X0.1082.82×101339.961.550.880.100.99984
Z19Y0.1033.99×101338.561.340.720.080.99989
Z19Z0.0992.00×101349.052.121.190.140.99979
Z20X0.0566.10×1015145.320.714.430.060.99968
Z20Y0.0524.70×1015141.340.842.740.040.99987
M10.0804.10×101471.131.851.650.110.99981
M20.1113.24×101337.791.550.480.060.99995
M30.1133.59×101334.651.480.870.120.99980
M50.0621.02×1014228.590.772.160.020.99996
M60.0949.92×101452.451.571.100.090.99985
M70.2024.08×101211.404.910.320.430.99974
M80.0455.24×1016342.500.415.310.020.99991
M100.0554.10×1015307.090.505.700.020.99988
M110.1601.43×101217.193.380.580.350.99962
M120.0512.17×1015289.330.469.030.040.99966
M130.1143.16×101331.191.751.080.190.99960
M140.0774.44×101492.141.362.850.110.99966
M160.1711.27×101217.383.700.650.380.99949
M170.1153.50×101333.301.580.850.130.99979
F20.1922.88×101212.352.910.370.310.99972
F80.0541.91×1015221.620.516.480.510.99970
F90.1265.64×101332.431.680.810.120.99978
F81Y0.0423.91×1016266.090.474.010.020.99992
PHI520.0711.72×101452.181.341.370.090.99975