4D Physics-Based Pore Pressure Monitoring Using Passive Image
Interferometry
- Eldert Fokker,
- Elmer Ruigrok,
- Rhys Hawkins,
- Jeannot Trampert
Abstract
This study introduces a technique for four-dimensional pore pressure
monitoring using passive image interferometry. Surface-wave velocity
changes as a function of frequency are directly linked to depth
variations of pore pressure changes through sensitivity kernels. We
demonstrate that these kernels can be used to invert time-lapse seismic
velocity changes, retrieved with passive image interferometry, for
hydrological pore pressure variations as a function of time, depth and
region. This new approach is applied in the Groningen region of the
Netherlands. We show good recovery of pore pressure variations in the
upper 200 m of the subsurface from passive seismic velocity
observations. This depth range is primarily limited by the reliable
frequency range of the seismic data.23 Feb 2023Submitted to ESS Open Archive 27 Feb 2023Published in ESS Open Archive