| Title | New Diagram Showing Potential of Geothermal Wells Drilled in a Geothermal Area |
|---|---|
| Authors | Takeshi Tanaka |
| Year | 1995 |
| Conference | World Geothermal Congress |
| Keywords | geothermal prospecting, geothermal well, geothermal alteration mineral, rate of temperature decline, quadrangle diagram, Yuzawa-Okachi area |
| Abstract | It is difficult to clarify potential of some geothermal wells drilled in the geothermal prospect area. Various geothermal alteration minerals are observed in the geothermal area. Comparing the formation temperature of alteration minerals are observed in the geothermal area. Comparing the formation temperature of alteration minerals, estimated from the various known data, with the measured temperature of wells, temperature decline and rate of temperature decline were gained for the first time. A new diagram showing geothermal potential was proposed as a quadrangle diagram, composed of Maximum temperature (T), Index containing temperature decline (DI), Activity index (AI) and Heat flow (HF) and was proven to be very effective as an indicator of potential of geothermal wells drilled in the geothermal prospect area. |