Systems developed in the past for the computerised analysis of well tests are based on mathematical models of the reservoir that can be solved using analytical methods. Unfortunately, for many geothermal well tests the flows are non-isothermal and often involve phase changes. This means that the corresponding mathematical models cannot be solved analytically and traditional methods of well test analysis, either manual or computerised, do not work very well. In the system discussed here, instead of analytical techniques very fast numerical methods are used to solve the reservoir models. These fast solvers are linked to an optimiser, which carries out the model fitting task. The system includes a range of possible reservoir models such as uniform porous medium and double porosity medium, and can handle any fluid conditions ranging from warm water to two-phase mixtures of water and steam or dry steam.

Press the Back button in your browser, or search again.

Copyright 2000, Stanford Geothermal Program: Readers who download papers from this site should honor the copyright of the original authors and may not copy or distribute the work further without the permission of the original publisher.