What is it about?

Monitoring the subsurface is of great importance for managing reservoirs in the oil industry and for CO2 storage. Time-lapse full-waveform inversion (TL-FWI) is an effective tool for monitoring the subsurface. Changes in the earth’s properties are typically small in terms of magnitude and spatial extent and different strategies have been proposed to make TL-FWI more suitable for monitoring the subsurface. In this study, we proposed the weighted-average TL-FWI (WA). Compared with different methods such as cascaded, cross-updating, central-difference, and simultaneous inversion, we show that the WA provides the best compromise between the computation time and accuracy.

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Why is it important?

1. The computation time of this method is less than other methods with comparable accuracy. 2. This method also provides information about time-lapse artifacts.

Read the Original

This page is a summary of: Weighted-average time-lapse seismic full-waveform inversion, Geophysics, December 2022, Society of Exploration Geophysicists,
DOI: 10.1190/geo2022-0090.1.
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