SEGJ Technical Conference


Full-wave seismic imaging of supercritical geothermal reservoir


Abstract
To examine the imaging capability of the supercritical water reservoirs as one of the future geothermal energies, we carried out simulations using full-waveform seismic inversion method. In the simulation, we assumed borehole seismic source at 2 km depth combined with seismic arrays at surface, borehole, observation well and horizontal well. The DAS is assumed as the array sensor in the wells providing extremely dense seismic data. The result of full-waveform inversion showed very precise location, shape and physical properties (Vp, Vs and density) of the reservoir model. In conclusion, we consider the imaging of supercritical water zone can be well defined by the combination of a borehole seismic source and the DAS seismic array(s) in the borehole.