A clean sandstone core sample with diameter of 3.8 cm and length of 5.6 cm is saturated with a brine. The core was desaturated in several steps, and the resistance was measured at each saturation. The results are as follows: Water Saturation (Fraction) Resistance (k2) 1.000 0.900 1.302 1.695 0.800 2.283 0.730 2.878 0.640 3.775 0.560 5.637 0.480 7.838 0.375 13.175 0.350 17.050 0.300 26 Brine resistivity 0.74 2m Archie coefficient 1.03 Cementation factor= 2.2147 (1) Estimate the rock porosity. (2) Determine the saturation exponent. (3) Estimate the amount of oil and brine (in cc) in the core sample when resistivity index is 5.
A clean sandstone core sample with diameter of 3.8 cm and length of 5.6 cm is saturated with a brine. The core was desaturated in several steps, and the resistance was measured at each saturation. The results are as follows: Water Saturation (Fraction) Resistance (k2) 1.000 0.900 1.302 1.695 0.800 2.283 0.730 2.878 0.640 3.775 0.560 5.637 0.480 7.838 0.375 13.175 0.350 17.050 0.300 26 Brine resistivity 0.74 2m Archie coefficient 1.03 Cementation factor= 2.2147 (1) Estimate the rock porosity. (2) Determine the saturation exponent. (3) Estimate the amount of oil and brine (in cc) in the core sample when resistivity index is 5.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A clean sandstone core sample with diameter of 3.8 cm and length of 5.6 cm is saturated with
a brine. The core was desaturated in several steps, and the resistance was measured at each
saturation. The results are as follows:
Water Saturation (Fraction) Resistance (kS)
1.000
1.302
0.900
1.695
0.800
2.283
0.730
2.878
0.640
3.775
0.560
5.637
0.480
7.838
0.375
13.175
0.350
17.050
0.300
26
Brine resistivity= 0.74 2m
Archie coefficient 1.03
Cementation factor= 2.2147
(1) Estimate the rock porosity.
(2) Determine the saturation exponent.
(3) Estimate the amount of oil and brine (in cc) in the core sample when resistivity index is 5.
All steps of the calculations should be shown.
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