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Learn the methodology of Seismic stratigraphy.
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Seismic stratigraphy is a methodology that extracts stratigraphic information from reflection seismic data. It maps out geological sequences, which reflect changes through time in ‘relative sea-level’. Within a sequence, seismic stratigraphy maps out different sedimentary facies belts, based on the internal reflection geometries within the sequence. It therefore helps to assess the prospectivity of basins or areas, because it allows lithology prediction away from well control.
Seismic stratigraphy (rather than focusing on structural prospect mapping) tries to reconstruct the filling history of a basin or area, and as such can provide important input to the prediction of source, reservoir and seal. Seismic stratigraphy is the bridge between the geophysicist and the geologist as it attempts to relate sedimentary units in space and time.
The fundamental mapping unit in seismic stratigraphy is the ‘Depositional Sequence’. A set of parameters play a crucial role in Depositional Sequences, i.e. Unconformities and Reflection Terminations. Reflection terminations are points where one reflection terminates against another seismic reflection. At these points the stratigraphic record becomes incomplete, i.e. there is time missing, which is consequently represented by an unconformity.
In this webinar, different unconformity types and reflection terminations will be:
1. Defined and
2. Illustrated in both a variety of outcrop examples and on seismic, with ample focus on their implication for ‘the business’.
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