2000 Volume 22 Issue 2 Pages 131-142
The characteristics of the tracer response are examined for the evaluation of geothermal reservoirs. In this study, we simulate the tracer response in a geothermal reservoir which has two planar dominant flow paths connected with a vertical flow path. Fluid flow and tracer concentration analyses are made with basic equations including the effect of the deformation of planar flow paths due to tectonic stresses and fluid pressure. Fluid pressure distributions, fluid velocities, and tracer responses are calculated numerically. From the results of simulation, the effects of the vertical distance between two planar flow paths and the distance between injection and production wells on the tracer response are discussed. By comparing with the results of single large dominant planar flow path, it is found that the maximum tracer concentrations at the production well are about 50% lower than those for the single planar flow path.
