Numerical Simulation and Performance Evaluation of the Uenotai Geothermal Field, Akita Prefecture

Published: 04/29/2005

Schlumberger Oilfield Services

This paper presents an evaluation of the performance of the Uenotai geothermal field, located in Akita Prefecture, Japan, during the first nine years of its operation (1994 – 2003). The performance evaluation was based mainly on numerical simulation of reservoir behavior using the TOUGH2 software.

The numerical simulation model includes a total area of 40 km2 and extends from the surface at +600m msl (mean sea level) to a depth of -2,000m msl. Through a trial-and-error process, the pre-exploitation condition of the reservoir was satisfactorily matched by the model.

Technical Paper from Proceedings World Geothermal Congress, Antalya, Turkey, 24-29 April 2005

Japan, Asia, Onshore
Steven J. Butler, Subir K. Sanyal, and Christopher W. Klein, GeothermEx, a Schlumberger company; Shun Iwata and Masahiro Ito, Akita Geothermal Company Yuzawa
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