Water Bottom Multiple Elimination and Data Quality Enhancement Using Parabolic Radon Transform: A Case Study of 3D Seismic Data from Offshore Niger Delta

D.O. Ogagarue^1, and J.O. Ebeniro²

¹Department of Earth Sciences, Federal University of Petroleum Resources, Effurun, Nigeria

²Department of Physics, University of Port Harcourt, Nigeria

Cite this paper:
D.O. Ogagarue and J.O. Ebeniro. Water Bottom Multiple Elimination and Data Quality Enhancement Using Parabolic Radon Transform: A Case Study of 3D Seismic Data from Offshore Niger Delta. Journal of Geosciences and Geomatics. 2014; 2(4):172-177. doi: 10.12691/jgg-2-4-5

Abstract

The aim of seismic data processing is to obtain accurate image of the subsurface which can be interpreted in terms of subsurface structures favourable to hydrocarbon accumulation. Multiples destructively interfere with primary reflections and their removal from reflection seismograms has been a longstanding problem to seismic processing geophysicists. If not eliminated, their presence could make seismic data interpretation difficult and lead to erroneous results. In this study, an attempt was successfully made to eliminate water bottom multiples by application of a specially derived parabolic radon filter on a 3D streamer seismic dataset acquired from offshore Niger Delta with the objective of improving the quality of the seismic data. Comparison of CMP gathers before and after application of the radon filter shows significant improvement in data quality which, if stacked, would create a volume more representative of the subsurface structures.

Keywords:
seismic data processing water bottom multiples Radon filter data quality Niger Delta

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