| Title | Core Hole Temperature Survey in Central Part of Sulawesi-Indonesia |
|---|---|
| Authors | Munandar, A., Kasbani, and Arsadipura S |
| Year | 2010 |
| Conference | World Geothermal Congress |
| Keywords | core hole temperature, non volcanic, Marana field, Pararra field |
| Abstract | Geothermal locations in Indonesia are mainly distributed along the Indonesian Volcanic Belts, however some are associated with non volcanic environments (intrusive, plutonic rocks). Some core holes were drilled in Marana and Pararra geothermal fields by Geological Agency, both of these are located in central part of Sulawesi, characterized as non volcanic geothermal systems. One of the core holes at Marana field flowed with hot water of a temperature about 95 C on the surface from well MM-1, which was 185 m in depth. Aanother well,,MM-2 with a depth of 250 m had low thermal gradient (about 9 C / 250 m). Furthermore, Well PRA-1 which is 251.20 m in depth at Pararra geothermal field had a thermal gradient about 11.44 C / 100 m. The extrapolation temperature calculated using Horner plot method is about 53.19 C at 250 m in depth. |