A Match-filter Approach for Q Estimation and Compensation after Depth Migration
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
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.