#TITLE_ALTERNATIVE#

• Main Author: PARSAORAN (NIM: 123 04 021), DANIEL
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/19993
• Institution: Institut Teknologi Bandung

Kamojang field is the first geothermal field in Indonesia which have been developed and operated for about 25 years from exploration to production stage. Development through the exploitation can lead the steadiness of mass on fluid system become perturb on the reservoir. Therefore, 4D microgravity method is an appropriate method for monitoring changes in the density due to reservoir production and water injection. <br /> <br /> <br /> <br /> <br /> On 4D gravity data processing method, the data that has used is taken twice, in June 2006 and July 2007. Its anomaly is reached from the process of data reduction of gravity in July 2007 by gravity data in June 2006 which each data have been corrected from drift and tidal effect. <br /> <br /> <br /> <br /> <br /> For the purpose of identification the influence of water injection to the reservoir, this research is done on the inverse modeling through the 4D microgravity data. 4D microgravity anomaly map and contrast density changes map beneath the surface of inverse modeling results, which supported by geological data and well data, shows the positive anomaly and negative anomalies. The positive anomaly which locationed in the middle and southern areas of research shows the addition of mass, while the negative anomaly in the northern part of the normal structure sesar show the reduction mass. Positive and negative anomalies can be caused by several things such as production and injection hydrothermal water in the reservoir. <br />