#TITLE_ALTERNATIVE#

• Main Author: TRIBAGUS SEBANGKIT (NIM 12301030); Pembimbing: Dr. Darharta Dahrin dan Ahmad Zaenudin, M.T., TUGAS
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/13145
• Institution: Institut Teknologi Bandung

The development of Kamojang Geothermal Field has consequences the balance of reservoir fluid mass. Therefore microgravity 4D is precise method to be applied for monitoring of reservoir density due to production and water injection. Microgravity 4D method based on data of which the taken from acquisitions process June, 2006 and November, 2006. The anomalies was resulted by gravity decreasing process based on data June, 2006 and November, 2006. Observations data was conducted both in Jun, 2006 and November, 2006. Microgravity 4 gravity anomalies was resulted from the variance between both of data above, after applying tidal correction, drift correction, filtering process, through moving average method. In this research, forward modelling data microgravity 4D was applied for identification of water injection effects to reservoir. Microgravity 4D anomalies distribution map, density contras changes and cross-section of sub-surface from forward modelling which is supported by geological data and well data as well, shows positive anomaly and negative anomaly. The positive anomaly was found in south area of research that shows mass increasing, but in other side the negative anomaly is found in north area of normal fault and middle area as well, shows mass decrease of mass. The positive and negative anomalies are resulted by different rain fall when observation times, hydrothermal productions, and water injections.