#TITLE_ALTERNATIVE#

• Main Author: WIDI KUSUMO (NIM : 123 05 004); Pembimbing : Prof. sri Widiyantoro; Dr.rer.nat. R. Mohammad, ADRIANTO
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14672
• Institution: Institut Teknologi Bandung

Double differential method is developed to locate hypocenter of a seismicity event precisely. This method can be applied for reservoir monitoring in geothermal field because its result is more precise, then the reservoir structure can be estimated well. This reservoir monitoring uses the water stimulation of geothermal system. When the water is injected to subsurface, fluid made some movements in reservoir structures such as fractures or faults and made some microseismic events on those structures. The microseimic events that we had can be used to estimate the reservoir structures. Thus, the hypocenters of microseismic are being an important thing in reservoir structures interpretation. That’s why precisely hypocenter location determination is needed in this reservoir monitoring. <br /> <br /> <br /> <br /> <br /> Double Differential method is used to relocate microseismic events. This method needs some support methods as input for the computation. Those methods are Single Event Determination for initial location of microseimic events, Joint Hypocenter Determination for hypocenter relocation which reduce effect of velocity model error, coherency clustering to collect similar microseismic events into one cluster and delay time determination because this method use a difference residual time of pair events. <br /> <br /> <br /> <br /> <br /> On this thesis, Double Differential method developed as a program. Data used is from Tohoku University and compute using our program. Then to test the quality of program, result of computation is compared with result of Tohoku University.