Investigation of the time-lapse changes with the DAS borehole data at the Brady geothermal field using deconvolution interferometry

• DOI: 10.1190/segam2020-3426023.1
• Publication Date: 2020-10-01T01:28:46Z
• Authors: Hilary Chang; Nori Nakata
• Keywords: geophysics; 01 natural sciences; atmospheric_science; 0105 earth and related environmental sciences

The distributed acoustic sensor (DAS) has great potential for monitoring natural-resource reservoirs. In this study, we investigate the DAS borehole data at Brady geothermal field. We analyze seismic velocity perturbations of waves propagating along during an eight-day period and variations across depth, time, temperature, pressure. results suggest that reverberation is caused by poor coupling between cable well-casing, reverberations provide useful information to measure time-lapse changes observation system potentially surrounded structure. This type signal can occur when not fixed well-casing even with good cement condition. Presentation Date: Monday, October 12, 2020 Session Start Time: 1:50 PM 3:55 Location: 362C Type: Oral