--> Application of Sequence Stratigraphic Concepts to the Interpretation of Passive Margin Siliciclastic Deposits: Examples from the Eocene Yegua and Cook Mountain Formations, Houston Salt Basin Southeast Texas, by E. Gomez, B. A. Luneau, T. B. Eschner, and A. J. Scott; #90986 (1994).

Datapages, Inc.Print this page

Abstract: Application of Sequence Stratigraphic Concepts to the Interpretation of Passive Margin Siliciclastic Deposits: Examples from the Eocene Yegua and Cook Mountain Formations, Houston Salt Basin Southeast Texas

Ernest Gomez, Barbara A. Luneau, Terry B. Eschner, Alan J. Scott

Sequence stratigraphic interpretation focuses on the integration of multiple data sets including wireline logs, seismic data, cores, and biostratigraphy. The resultant interpretation provides a coherent picture of depositional systems, genetic stratigraphic units, and significant surfaces that can be used in the exploration for and exploitation of hydrocarbons.

An integrated sequence stratigraphic analysis of the Yegua and Cook Mountain formations in the Houston salt basin of southeast Texas indicates that the section is comprised of five sequences. Each sequence consists of lowstand, transgressive and highstand systems tracts. Core studies enabled the recognition of depositional environments and sedimentary facies. Genetic units and significant surfaces, such as maximum flooding surfaces and sequence boundaries were identified by concurrent analysis of cores, logs, seismic, and biostratigraphic data. This approach established relationships among depositional environments, genetic stratigraphic units, significant surfaces, log response, and seismic character.

Regional stratigraphic cross sections tied to seismic data document the lateral and vertical distribution of genetic units and significant surfaces. Isopach and facies maps of each systems tract illustrate the distribution of basin floor fans, slope fans, lowstand shoreline deposits, incised-valley fill, transgressive shoreline deposits, and highstand deltas in each of the five sequences.

The resulting integrated sequence stratigraphic framework can be used to predict the occurrence of reservoir quality sandstones. In the downdip Yegua and Cook Mountain formations, the best opportunities for significant gas and condensate reserves are in basin floor fan, slope fan, and prograding complex sandstones of the lowstand systems tract.

AAPG Search and Discovery Article #90986©1994 AAPG Annual Convention, Denver, Colorado, June 12-15, 1994