Frequency-Dependent Streaming Potential of Porous Media—Part 2: Experimental Measurement of Unconsolidated Materials
Figure 8
The calculated streaming potential coupling coefficient (normalised to the value at 2 Hz, which was 1.80 V/MPa) as a function of frequency using the Pride model [23] for a pack of nominally 2 mm diameter glass beads saturated with 10−3 mol/L NaCl solution at 24°C (, m2). Each solid curve shows the results of the model for a different value of permeability. The dashed line is for the permeability of the sample that was measured independently.
