Wells Declivity Temperature Geothermal Field Bora-Sigi, Central Sulawesi, Indonesia

Abstract

Indonesia is a rich source of geothermal energy. This island is located on the “Ring of Fire” volcanic belt, accounting for 40 % of the world’s geothermal reserves. Geothermal energy is needed as one of the alternative power generation to satisfy electricity demand in Indonesia. Some Geothermal field in Indonesia is a non-volcanic, unfortunately utilization of Geothermal energy in the field of non-volcanic Geothermal has not been developed for use not directly into electrical energy. One field of non-volcanic Geothermal potential as a powerhouse, namely Geothermal Field Bora-Sigi Central Sulawesi. The research method is a three step process: method studios are obtained by examining the regional area of volcanic Geothermal field area, field methods is obtained by measuring the temperature (Temperature Logging) on wellbore BRA-1 and BRA-2 at a certain depth, and laboratory methods by calculating the data well BRA-1 and BRA-2 by using the Horner plot method. Temperature slope drilling BRA-1 and BRA-2 in the geothermal field Bora-Sigi, Central Sulawesi was conducted to determine the temperature gradient and prove the results of previous investigations. Temperature gradients in the temperature slope wells BRA-1 and BRA-2, respectively 29.72° and 28.51° per 100 m depth. The results are good and in accordance with the results of an integrated investigation and potential to be developed as energy power plants for the region.