MONITORING SUBTERRANEAN HYDROCARBON SATURATION USING DISTRIBUTED ACOUSTIC SENSING

摘要

Some aspects of what is described here relate to seismic data analysis techniques. A seismic excitation is generated in a directional section of a first wellbore in a subterranean region. Seismic responses associated with the seismic excitations are detected by a fiber optic distributed acoustic sensing array in a directional section of a second wellbore in the subterranean region. Seismic response data based on the seismic response are analyzed to identify changes in hydrocarbon saturation in a reservoir in the subterranean region. In some cases, the changes in hydrocarbon saturation are identified in real time during well system operations.