面向深部地热岩体的弹性波逆时偏移成像方法OACSTPCD

Geothermal energy is gaining global attention as a clean energy source,underscoring the significance of precise imaging of deep geothermal reservoirs.The conventional elastic reverse time migration(E-RTM)technique relies on direct imaging of coupled P-and S-waves,which often leads to imaging artifacts and unclear images.In this study,we propose an approach based on the decoupled elastic wave equation to independently handle P-and S-wavefields.We apply this approach to two typical hot dry rock models using inner product imaging conditions.The numerical simulations demonstrate that the de-coupled elastic wave imaging profiles provide clearer event representations and a more evenly distributed energy profile in the deeper regions compared to imaging results obtained from coupled wavefields.This method showcases the potential for achie-ving high-quality imaging of deep geothermal reservoirs.