| Title | A Simulation Study on Hydrothermal System of the Kakkonda Geothermal Field |
|---|---|
| Authors | Norio Arihara, Hiroshi Yoshida, Mineyuki Hanano and Ken Ikeuchi |
| Year | 1995 |
| Conference | World Geothermal Congress |
| Keywords | simulation, fracture, injection, aquifer, hydrothermal mechanism |
| Abstract | The hydrothermal system of the Kakkonda geothermal field, an active liquid-dominated reservoir, has been studied by a three-dimensional porosity geothermal model. Development of the field started first by exploiting a reservoir which ranges from 1000 to 1500 in depth. After about eight years of injection in this reservoir, another reservoir was found below the first one. A unique feature has been confirmed such that the hydrothermal connection of the two reservoirs is very weak, and that the lower reservoir shows much higher temperature than the upper reservoir. Hydrothermal mechanisms confirmed by simulation are the existence of an extensive thermal aquifer which sustains the pressure of the upper reservoir, and a very limited communication between the reservoirs. |