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Optimization of the stacking quality of seismic data in the onshore Niger Delta Basin by the implementation of refraction statics

Author Affiliations

  • 1Department of Physics (Applied Geophysics Option), Faculty of Science, University of Port Harcourt, Rivers State, Nigeria
  • 2Department of Geological Sciences, Faculty of Physical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria
  • 3Department of Geological Sciences, Faculty of Physical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria

Int. Res. J. Earth Sci., Volume 10, Issue (2), Pages 19-33, August,25 (2022)


The role of the derivation and implementation of refraction statics in the enhancement of the end result of the stacking procedure, which entails improving overall data quality and integrity, was investigated using a high resolution onshore 3D seismic data acquired from a prospect field in the Niger Delta Basin. The processing approach adopted to achieve the focal objective of the study was to obtain a brute stack for traces of a select common midpoint (CMP) from the data without any form of refraction statics applied. We subsequently derived an appropriate and complete refraction statics solution and applied it to the data and stacked for the same CMP, to mirror the same segment of the dataset which was then placed side by side with the initial brute stack and critically analyzed to enable us establish the role and impact of the derived and implemented refraction statics which has been applied to the data in terms of stacking result optimization. After the analysis of both stacks (brute stack and the stack after application of refraction statics), we observed that the stack after refraction statics was applied revealed a clearer subsurface image in the CMP display panel in terms of the structures and stratigraphy than in the brute stack. Potential reflectors were properly aligned with no incidence of mis-ties of reflectors, reflectors exhibited remarkable continuity. Jittery reflections around marked horizons were completely re-aligned to their actual positions on the CMP panel where refraction statics was applied than in the CMP display of the brute stack.


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