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Simultaneous TV-regularized Time-lapse FWI with Application to Field DataNormal access

Authors: M. Maharramov, B.L. Biondi and M. Meadows
Event name: 78th EAGE Conference and Exhibition 2016 - Workshops
Session: WS14-Geophysics and Geomechanics, Jointly Applied to Subsurface Characterization
Publication date: 31 May 2016
DOI: 10.3997/2214-4609.201601669
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.24Mb )
Price: € 20

We present a field data application of the technique for reconstructing production-induced subsurface model changes from time-lapse seismic data using full-waveform inversion (FWI). The technique simultaneously inverts multiple survey vintages with total-variation (TV) regularization of the model differences. After describing the method, we discuss its application to the Gulf of Mexico, Genesis Field data. We resolve negative velocity changes associated with overburden dilation and demonstrate that the results are stable with respect to the amount of regularization and consistent with earlier estimates of time strain in the overburden. The estimated velocity anomalies are also consistent with the trajectory of three wells that are known to have failed.

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