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Applications of FWI to the Microseismic Source Problem
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
Full waveform inversion (FWI) is a method to find a model that minimizes the discrepancy between true and modelled data, and is commonly used in marine seismic applications. FWI methods benefit, in principle, from any new and non-redundant wave propagation paths, and microseismic events in this sense represent potentially rich sources of information. We propose a modified FWI scheme, called microseismic FWI, or MFWI, to simultaneously invert for source location and velocity model. After deriving the gradients in this multiparameter, scalar acoustic implementation, we study the role of frequency on the inversion. Then, we look at the cross-talk between the two parameters, and consider the implications of the cross-talk for further applications of MFWI.