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Examples of full-waveform inversion that utilize the low-frequency content available from dual-sensor, single-streamer acquisitionNormal access

Authors: S. Kelly, J. Ramos-Martínez and S. Crawley
Event name: 72nd EAGE Conference and Exhibition - Workshops and Fieldtrips
Session: WS6 3D Full Waveform Inversion – A Game Changing Technique?
Publication date: 14 June 2010
DOI: 10.3997/2214-4609.20149929
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 614.16Kb )
Price: € 20

Summary:
In this abstract, we present both 2-D and 3-D examples of acoustic, full-waveform inversion using synthetic recordings for up-going pressure. These data are representative of those obtained through de-ghosting, by utilizing dual-sensor, single-streamer recording. We compare the results of “conventional” full-waveform inversion with those obtained from a method based on impedance, which we have found to be useful for improving recovery of the lowest wavenumbers in the inverted model. We also present results for the 2-D inversion of a line of dual-sensor, field data recorded from offshore Cyprus. Both this inversion and the synthetic inversion study indicate that features ~ 0.5 km can be accurately recovered at depths of 3.5 km using maximum offsets of only 8 km.


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