Natural-State Modeling of Geothermal Reservoir at Ogiri, Japan Using iTOUGH2
- Key words
- numerical model, iTOUGH2, TOUGH2
- Conference
- Stanford Geothermal Workshop
- Year
- 2015
- Session
- Reservoir Engineering
- Language
- English
- Paper number
- Tateishi
Full text
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Abstract
A three-dimensional numerical reservoir model of the Ogiri geothermal field was developed through natural-state simulation. The field is characterized by the presence of low permeable cap rock, and high permeable fault system such as the Ginyu fault. The Ginyu fault plays the main reservoir. A model was extended to the south for covering future development area and the GIS analysis data was incorporated into the model for increasing its resolution. Selected parameters of rock type were estimated through inversion analysis using the iTOUGH2 simulator and the simulated results show a good match with temperature profiles of wells and feed zone pressures in natural-state simulation.
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