Fractal Characterization of the Fracture Distribution and the Permeability in Geothermal Reservoirs
- Key words
- geothermal reservoir, fractal geometry, fracture system, Kakkonda, core observation, lost circulation
- Location
- Kakkonda, Japan
- Conference
- World Geothermal Congress
- Year
- 1995
- Session
- SECTION 6 - Resource Evaluation and Modeling
- Language
- English
- Paper number
- 3-tateno
Full text
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Abstract
A basis for modeling geothermal reservoirs using a fractal model for fracture size and distribution was studied. Core samples and lost-circulation data from geothermal wells in the Kakkonda geothermal field, Japan were investigated and statistically analyzed. The results of the core analysis show a fractal distribution of fracture width and spatial distribution. Results of the analysis of lost circulation also indicates that the fracture size and continuity are fractal in geothermal reservoirs. These results show that the modeling of the fracture system in geothermal reservoirs using fractal theory is possible.
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