n Journal of Emerging Trends in Engineering and Applied Sciences - Structure and facies development resulting from neogene gravity tectonics and depositional processes : application to Afo Field Niger Delta, Nigeria

Volume 4, Issue 3
  • ISSN : 2141-7016
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Integration of geophysical data with stratigraphic concepts has added a new dimension to basin analysis without which reservoir, source and seal discrimination may be difficult. A good knowledge of the environment of deposition will aid hydrocarbon exploration and exploitation. This study involves seismic stratigraphic interpretation of Afo Field in the western part of Niger Delta. Seismic data acquired over this field were analysed for the area's internal architecture and gross depositional processes responsible for its facies architectural and structural composition. These analyses were done with a view to know better the environment of deposition of the different facies known to promote the exploration and production of hydrocarbon. Time and time thickness contour maps were generated, facies map of the reflection configuration and that of the relationship of reflections to boundaries were also developed. A cross section drawn across these maps have enabled the determination of the environments for further exploratory studies. The result of this study shows that the environment of deposition was that of delta to marine environment, which can further be incorporated with well data to know the stratigraphy. This approach of combining high resolution seismic data with improved depositional stratigraghic concepts has proved to be effective for basin analysis.

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