Harmonic Pulse Testing for Well Monitoring: Application to a Fractured Geothermal Reservoir

Application of Self-potential Measurements to Geothermal Reservoir Engineering: Characterization of Fractured Reservoirs

An “EKP-postprocessor” computational tool was developed several years ago to calculate space/time distributions of electrokinetic potentials resulting from histories of underground conditions (pressure, temperature, liquid-phase saturation, concentration of dissolved species, etc.) computed by unsteady multidimensional geothermal reservoir simulations (Ishido and Pritchett, 1996). Since that ti...

A Design Nomogram for a Horizontally-Fractured Geothermal Reservoir to determine the Production Temperature

T.C. Ekneligoda Abstract: The paper presents a graphical technique for the rapid analysis of the complex, nonlinear equation that describes the variation of the production temperature of a horizontally-fractured geothermal well. The nomogram presented for the evaluation of the production temperature incorporates the mass flow rate, fracture width, fracture length, number of conductive fractures...

Heating in a Geothermal Reservoir

A computer program in Visual Basic 6.0 is written to calculate steam tables for pure water up to 800oC and 1400 bar. The steam tables are created as a DLL (Dynamic Link Library) object with properties: temperature, pressure, specific volume, enthalpy and entropy for liquid and vapor phases, and liquidvapor state. The steam tables can be incorporated in any computer program on the Windows platfo...

Modeling Fluid Flow and Electrical Resistivity in Fractured Geothermal Reservoir Rocks

Phase change of pore fluid (boiling/condensing) in rock cores under conditions representative of geothermal reservoirs results in alterations of the electrical resistivity of the samples. In fractured samples, phase change can result in resistivity changes that are more than an order of magnitude greater than those measured in intact samples. These results suggest that electrical resistivity mo...

Testing Recycled Glass for Monitoring Well Packing