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Stretch-free generalized normal moveout correction |
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| Authors: | Jorge H. Faccipieri Tiago A. Coimbra Rodrigo Bloot |
| Affiliation: | 1. University of Campinas, Center for Petroleum Studies, Rua Cora Coralina, 350, Cidade Universitária, 13089-970 Campinas, São Paulo, Brazil;2. University of Campinas, Center for Petroleum Studies, Rua Cora Coralina, 350, Cidade Universitária, 13089-970 Campinas, São Paulo, Brazil National Institute of Petroleum Geophysics (INCT-GP), Salvador, Bahia, Brazil;3. Federal University of Latin America Integration, Avenida Silvio Americo Sasdelli, 1842, Vila A, 85866-000 Foz do Iguaçu, Paraná, Brazil National Institute of Petroleum Geophysics (INCT-GP), Salvador, Bahia, Brazil |
| Abstract: | The effective application of normal moveout correction processes mainly depends on four factors: the chosen traveltime approximation, the stretching associated with the given traveltime, crossing events and phase changes, the last two being inherent to the seismic data. In this context, we conduct a quantitative analysis on stretching considering a general traveltime expression depending on half-offset and midpoint coordinates. Through this analysis, we propose a mathematically proven procedure to eliminate stretching, which can be applied to any traveltime approximation. The proposed method is applied to synthetic and real data sets, considering different traveltime approximations and achieved complete elimination of stretching. |
| Keywords: | Seismics Signal processing Parameter estimation Mathematical formulation |