#TITLE_ALTERNATIVE#

• Main Author: RIZKI ISROI (NIM : 10211056), ALAMSYAH
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/20905
• Institution: Institut Teknologi Bandung

<p align="justify">The use of the Earth's heat as an energy source only began early in the twentieth century when electricity was generated for the first time from geothermal steam at Larderello, Italy in 1904. In Indonesia, the exploration of geothermal energy firstly begin on 1918 on the Kawah Kamojang. In 1926 to 1929 five exploration wells drilled which until recently one of the wells, i.e. wells KMJ-3 still produced dry steam. First electric power generated from Kamojang Geothermal Field (KGF) in 1978 when a small mono-block form of steam turbines with a capacity of 250 kWe has been installed by utilizing dry steam from KMJ-6 exploration wells. In order to maintain the continuity of the production process, it is required a good monitoring and management of Kamojang Geothermal Field. In this research, analysis of the formation of fractured zones in the geothermal reservoir on Kamojang Geothermal Field as one of the geothermal reservoir monitoring efforts in the region. The method used is the micro-earthquake (MEQ) or micro seismic in order to obtain the distribution of micro earthquake hypocenter that indicate the direction of flow of reinjection fluids as fractured zones in the geothermal reservoir. Micro earthquake hypocenter determination method used in this research is the Single Event Determination (SED) method, which was first developed by Geiger in 1910. Based on the analysis, it was recorded about 264 events of micro earthquake by MEQ stations in Kamojang. However, only 30,3 % of it or 80 events of micro earthquake were assosiated to geothermal reservoir. And then according to the distribution of epicenter and hypocenter of micro earthquake events, the flow pattern of reinjection fluid was indicated from well INJ21 toward west, east, and north-east. While well INJ15 shows different pattern, which was indicated toward south, west, and north-east. The rest is well INJ35 did not shows any injection activities since there was no micro earthquake events represent to the location of well INJ35.<p align="justify">