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The AAPG/Datapages Combined Publications Database
GCAGS Transactions
Abstract
Enhanced Resolution Seismic and New Subsurface Insights: Miocene Section, St. Mary Parish, Louisiana
Abstract
In this study, traditional 3D seismic data were enhanced in an effort to attain an improved understanding of the subsurface with a focus on the Miocene section. To achieve this objective, an innovative spectral extrapolation algorithm was applied following a structural noise cancelation process. By taking advantage of the well-known harmonic resonance phenomenon, this process enables amplitude estimation at frequencies near or below the noise threshold of the data. The periodicity of layer reflectivity within the input spectrum enables prediction of its behavior beyond the input spectrum limits, thereby augmenting the resolution of the seismic data.
The resulting seismic volume imaging improvements led to: (1) increased apparent vertical separation of sedimentary layers (seismic detuning), (2) improved definition of their lateral continuity, and (3) enhancement of structural and stratigraphic discontinuities throughout the section. These details of the subsurface are extremely important for both exploration (mapping and drilling of new prospects) and development (field delineation and compartmentalization).
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