Receiver-extension strategy for time-domain full-waveform inversion using a relocalization approach

A receiver-extension strategy is presented as an alternative to recently promoted source-extension strategies, in the framework of high-resolution seismic imaging by full-waveform inversion (FWI). This directly applicable time-domain FWI, and, unlike methods, it incurs negligible extra computational cost. After connections between different strategies are reviewed, method introduced and analyzed for single-arrival data. The results a misfit function convex with respect velocity model this context. then applied three exploration-scale synthetic case studies representative geologic environments, based on Marmousi model, BP 2004 salt Valhall model. In all cases, makes possible start FWI crude initial models reconstruct meaningful subsurface models. good performance method, even considering inaccurate amplitude prediction due noise, imperfect modeling, source wavelet estimation, bodes well field data applications.