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A Match-filter Approach for Q Estimation and Compensation after Depth MigrationNormal access

Authors: M. Cavalca and R.P. Fletcher
Event name: 80th EAGE Conference and Exhibition 2018
Session: Seismic Attenuation - Theory And Practice I
Publication date: 11 June 2018
DOI: 10.3997/2214-4609.201801123
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 849.62Kb )
Price: € 20

We extend a match-filter Q-estimation approach previously proposed to estimate attenuated traveltimes from depth-migrated gathers. These depth-domain attenuated traveltimes can then be used within a dedicated Q tomography scheme to reconstruct 3D Q models of the subsurface. Alternatively, we show that, in environments of moderate structural complexity, the stability and quality of this attribute enables consideration of direct Q-compensation workflows, offering attractive quality/cost trade-offs in areas suffering from spatially variant attenuation issues.

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