Characterization of Fractured Reservoirs Using a Combination of Downhole Pressure and Self-Potential Transient Data

Figure 4

Results from the reservoir model taking into account individual fractures and a borehole. Schematic diagram showing the distribution of “microscopic” potential in the fracture (solid lines) and matrix (broken lines) regions in the reservoir, which is equal to change in local pressure multiplied by the streaming potential coefficient 𝐶 (here homogeneous 𝐶 is assumed for simplicity). “Macroscopic” potential (◆) calculated for MINC-medium blocks corresponds to an averaged potential over the fracture and matrix regions (after [10]).