Acoustically Derived Perforation Efficiency and Near Field Conductivity Using High-Resolution Surface Pressure Analysis in Geothermal Applications

In Enhanced Geothermal Systems (EGS), connecting wells through multi-stage stimulation is critical tomaintain well-to-well connectivity, yet extreme downhole conditions challenge conventional downholediagnostics. This work applies a fully surface-based acoustic diagnostic to quantify near-wellboreinjectivity and flow distribution in geothermal completions. The objective is to isolate how much of thetotal pressure drop is attributable to wellbore friction versus perforation/fracture connection into theformation. The scope includes pre- and post-stimulation measurements to track changes in near-wellboreimpedance during geothermal injection. By analyzing end-of-stage water-hammer signals, we index nearwellbore fracture conductivity (connectivity), analogous to transmissivity gains observed in recent superhotEGS tests