--> Abstract: Integrated Well-log, Seismic, and Biostratigraphic Approach to Sequence Stratigraphy in Late Cenozoic Expanded Sections, Gulf of Mexico, by R. M. Mitchum, Jr., J. B. Sangree, P. R. Vail, and W. W. Wornar; #91004 (1991)
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Integrated Well-log, Previous HitSeismicNext Hit, and Biostratigraphic Approach to Previous HitSequenceNext Hit Stratigraphy in Late Cenozoic Expanded Sections, Gulf of Mexico

MITCHUM, ROBERT M., JR., R M Mitchum Exploration Inc., Houston, TX, JOHN B. SANGREE, Sangree Exploration Inc., Houston, TX, PETER R. VAIL, Rice University, Houston, TX, and WALTER W. WORNAR, Microstrat Inc., Houston, TX

Increased emphasis on well-log signatures and recognition criteria for stratigraphic Previous HitsequenceNext Hit Previous HitboundariesNext Hit, systems tracts, and condensed sections in a Previous HitsequenceNext Hit-stratigraphic context has enhanced facies interpretation and reservoir prediction capabilities. Integration of well logs with high-resolution biostratigraphy and paleobathymetry, high-quality Previous HitseismicNext Hit configuration data, and the latest eustatic cycle chart provides the best data base for Previous HitsequenceNext Hit-stratigraphic analysis. This approach is particularly effective for thick, rapidly deposited slope and basin sediments, such as in the Plio-Pleistocene of the Gulf of Mexico basin.

The general Previous HitsequenceNext Hit-stratigraphic model consists of a depositional Previous HitsequenceNext Hit with lowstand basin floor fan, slope fan, and prograding complex, transgressive systems tract, and highstand systems tract. Each systems tract is deposited at a predictable position in an interpreted eustatic cycle and has recognizable signatures in well logs and Previous HitseismicTop data.

Any given basin to which this model is applied is strongly controlled by its own tectonic subsidence and accommodation history, and by the type and rate of sediment supply, but the higher frequency eustatic cyclicity is superposed on the other basinal controls. A typical depositional model for the Plio-Pleistocene of the Gulf of Mexico basin is a diapir-controlled subbasin associated with a large contemporaneous expansion fault. The environment of deposition is closely related to the history of fault development.

Reservoir sand distribution is characteristic and predictable for each systems tract. Carefully planned evaluation and completion techniques are based on these characteristics.

 

AAPG Search and Discovery Article #91004 © 1991 AAPG Annual Convention Dallas, Texas, April 7-10, 1991 (2009)