Frequency-Dependent Streaming Potential of Porous Media—Part 2: Experimental Measurement of Unconsolidated Materials
Figure 4
The calculated streaming potential coupling coefficient (normalised to the value at 2 Hz, which was 1.37 V/MPa) as a function of frequency for a pack of nominally 0.5 mm diameter glass beads saturated with 10−3 mol/L NaCl solution at 24°C (, m2). (a) Magnitude with six models shown fitting the data [6, 9, 19, 22, 23], (b) real component for models [6, 9, 19, 23], and (c) imaginary component for models [6, 9, 19, 23].
