Corrections for the near-surface viscoelastic attenuation distortions are needed to enable the analysis of the true reflectivity response from the reservoir. Current surface-consistent amplitude balancing and deconvolution methods relying on reflected energy are often insufficient to provide adequate near-surface corrections making reservoir characterization operations inadequate for several land datasets. We developed a surface-consistent deconvolution approach for transmitted wavefields that is applied to a sequence of dune and sabkhas where uncorrected amplitude anomalies typically remain in the data. The transmitted portion of the wavefield travels in the near-surface and represents the best candidate for analyzing the near-surface characteristics for phase time shifts and viscoelastic attenuation behaviors. The developed method provides a generalized solution for residual statics and amplitude corrections that is applicable to all geologic settings. The automatic method is applied directly on raw data to provide an ideal pre-processing method for land seismic datasets.
Presentation Date: Monday, October 12, 2020
Session Start Time: 1:50 PM
Presentation Time: 1:50 PM
Location: Poster Station 5
Presentation Type: Poster
