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GCFuture Trends in 3-D
Seismic
Analysis: The Integration of
Seismic
Stratigraphy and
Seismic
Geomorphology*
By
Henry W. Posamentier1
Search and Discovery Article #40127 (2004)
*Adapted from the Geophysical Corner column in AAPG Explorer, February, 2004, entitled “3-D Yields Strat Geologic Insights” and prepared by the author. Appreciation is expressed to the author, to R. Randy Ray, Chairman of the AAPG Geophysical Integration Committee, and to Larry Nation, AAPG Communications Director, for their support of this online version.
1Manager, geoscience and technology, Anadarko Canada Corporation., Calgary, Canada ([email protected])
The application of
seismic
data
to stratigraphy and depositional systems analysis has been widespread at least since the publication of AAPG Memoir 26, over 27 years ago.
Most of the early work was based on analyses of 2-D
seismic
. Only relatively recently has the emphasis shifted to 3-D
seismic
, with sometimes astonishing results. In some instances entire depositional systems with discrete depositional elements can be directly imaged, resulting in highly accurate predictions of lithofacies relationships in time and space. Such direct imaging of geology has resulted in refinement of depositional models, especially within the context of sequence stratigraphy.
Geologic
interpretation
of 3-D
seismic
data
can take two forms:
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Analysis of cross-section views, or
seismic
stratigraphy. This has been the classical approach to extracting geologic insights from
seismic
data
, especially when only 2-D
seismic
data
are available.
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Analysis of plan-view images, or
seismic
geomorphology. This approach necessarily involves 3-D
seismic
data
and constitutes the analysis of the geological significance of landforms observed. Clearly, the most robust geologic interpretations involve the integration of insights derived from stratigraphic as well as the geomorphologic analyses.
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uGeneral statementuFigure captionsuChannel systemsuTurbidite fanuShelf-edge deltasuVisualization
uGeneral statementuFigure captionsuChannel systemsuTurbidite fanuShelf-edge deltasuVisualization
uGeneral statementuFigure captionsuChannel systemsuTurbidite fanuShelf-edge deltasuVisualization
uGeneral statementuFigure captionsuChannel systemsuTurbidite fanuShelf-edge deltasuVisualization
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Figure Captions
Visualization of Channel Systems
Figure 1 illustrates a Pleistocene deep-water depositional environment
on the basin floor of the Gulf of Mexico. Both
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