What is it about?
FWI image obtained using full wavefields of a DAS VSP dataset is comparable to a legacy OBN RTM image.
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Why is it important?
By applying dynamic matching FWI to full wavefields including multiples, this work overcomes 2 shortcomings of the conventional imaging using primaries only data from DAS VSP acquisitions: (1) narrow illumination angle range; (2) no image possible above the shallowest DAS channel (2km depth in this case). The resulting image derived from final FWI model is comparable to a legacy OBN RTM image that uses primaries only.
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This page is a summary of: Maximize the value of DAS VSP using full wavefields, The Leading Edge, November 2024, Society of Exploration Geophysicists,
DOI: 10.1190/tle43110735.1.
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