An Experimental and Modeling Study on the Response to Varying Pore Pressure and Reservoir Fluids in the Morrow A Sandstone

Figure 10

P- and S-wave velocities for the low-permeability number 2 sample versus differential pressure for dry rock, brine saturated, and when flushed with live oil and CO₂.

(a) P-wave velocities for the low-permeability number 2 sample versus differential pressure

(b) S-wave velocities for the low-permeability number 2 sample versus differential pressure