Micro-seismic imaging using source-independent waveform inversion

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Using full waveform inversion (FWI) to locate microseismic and image microseismic events allows for an automatic process (free of picking) that utilizes the full wavefield. However, waveform inversion of microseismic events faces incredible nonlinearity due to the unknown source location and function (time). We develop a source independent FWI of microseismic events to invert for the source image and the velocity model. It is based on convolving reference traces with the observed and modeled data to mitigate the effect of an unknown source time. The adjoint-state method is used to derive the gradient for the source image and velocity updates. By inverting for both the sources image and the velocity model, the proposed method produces good estimates of the source location and the background velocity for part of the Marmousi model.
Original languageEnglish (US)
Title of host publication78th EAGE Conference and Exhibition 2016
PublisherEAGE Publications BV
ISBN (Print)9789462821859
DOIs
StatePublished - Mar 13 2017

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