Tlalka S.,Geofizyka Torun Ltd.
73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011: Unconventional Resources and the Role of Technology. Incorporating SPE EUROPEC 2011 | Year: 2011
This paper deals with advanced non standard methods of land noise elimination with use of hybrid modeling and adaptive subtraction. Attached examples come from Poland from region near tide and shale gas areas. In seismic data processing production, dedicated approach is applied which allow to use interactive complex procedures leading to removal of random or coherent noise. Advanced hybrid models are presented where models of noise are iteratively and interactively created. Adaptive procedures allow to subtract modeled noise from seismic data. These operations allow to get proper quality of reflections and seismic image. Moreover, important issue is preserving amplitudes relations in this case. Important role play amplitude scaling for noise elimination and noise models creation. Discussed are interactive procedures and non standard approach to land noise elimination where moveout corrections and non surface consistent static corrections are also used to model. Noise removal, such as presented in this paper, is of great importance when high resolution of seismic image is needed.
Rysz J.,Geofizyka Torun Ltd. |
Sinoracki A.,Geofizyka Torun Ltd. |
Gabor J.,Geofizyka Torun Ltd. |
Buszka T.,Geofizyka Torun Ltd. |
Gadubala R.,Geofizyka Torun Ltd.
72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010: A New Spring for Geoscience. Incorporating SPE EUROPEC 2010 | Year: 2010
High-velocity anomalies in the near surface can significantly degrade the quality of the seismic data causing e.g. a discontinuity in horizons and a false pull-up. The authors are presenting the method that had proven to be very effective and efficient in terms of time and costs. In shown case the concept of a special approach to seismic static corrections brought much better final results than pre-stack depth migration or pre-stack wave equation datuming. Presented case study showed significant improvements in comparison to traditional statics corrections in terms of reliability of structural time image alike continuity of the reflection events. © 2010, European Association of Geoscientists and Engineers.