#TITLE_ALTERNATIVE#

• Main Author: ERNANDA (NIM : 123 06 062), DION
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/21798
• Institution: Institut Teknologi Bandung

The process of fluid injection into hydrocarbon reservoir resulted in the emergence of micro-earthquakes in the reservoir that can be recorded on the surface. This micro earthquake showed how the structure develops in the reservoir due to the injection. To come up with a good image of the structure, it requires a method that is able to provide location of these micro-earthquakes as accurate as possible. one method that is expected to answer this question is the double-difference method. To see how the double-difference method can provide accurate hypocenter locations of micro-earthquake in the reservoir, an anticline model simulated to yield micro earthquake due to the fluid injection into the reservoir. Synthetic travel time of the reservoir model is calculated by ray tracing pseudo-bending. A total of 100 early micro earthquakes in the reservoir layer have been ray-traced to 9 stations located around the hypocenter. the travel time data then processed with single event determination event and then relocated with Joint Hypocenter Determination and Double Difference Method. the velocity model used to relocate the hypocenter is a 1-D velocity model which is an approach of the initial model, Inaccuracies of the hypocenter location generated by each method to the initial hypocenter position is presented by a histogram. Statistical data indicates that inaccuracies produced by Double Difference method capable of relocating the hypocenter by a position error of 0.2 km where the Single Event Determination method produces an average error of 0.7 km.