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High Frequency Characterization of an Outcropping, Sinuous Leveed-Channel Complex, Dad Sandstone Member, Lewis Shale, Wyoming

By
S. Van Dyke
S. Van Dyke
University of Oklahoma Aera Energy LLC
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R. M. Slatt
R. M. Slatt
University of Oklahoma
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J. Dodson
J. Dodson
University of Oklahoma
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C. Valerio
C. Valerio
University of Oklahoma Occidental Oil and Gas Corp.
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N. Buckner
N. Buckner
University of Oklahoma
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H. Correa-Correa
H. Correa-Correa
University of Oklahoma Shell Oil Corp.
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B. Ojo
B. Ojo
University of Oklahoma Schlumberger Inc.
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Published:
December 01, 2006

Abstract

This paper presents the results of data collection, analysis, and integration to build a 3D geologic model of an outcropping leveed-channel complex. Data is from more than 120 standard measured stratigraphic sections, behind-outcrop drilling/logging/coring, ground-penetrating radar and electromagnetic induction surveys, and 2D shallow seismic reflection acquisition.

This leveed-channel complex, which is part of the Dad Sandstone Member of the Cretaceous Lewis Shale, Wyoming, consists of ten channel-fill sandstones, confined within a master channel. The complex is 67m (200ft.) thick, 500m (1500ft.) wide, and has a net sand content of approximately 57 percent. Individual channel-fills are internally lithologically complex, but in a systematic manner which provides a means of predicting orientation and width of sinuosity. Although it has not been possible to completely document the three-dimensionality of this system, the 3D model that has evolved provides information on lithologic variability at scales which cannot be verified from conventional 3D seismic of subsurface analog reservoirs. This vertical and lateral variability can provide realistic lithologic input to reservoir performance prediction. An outcome of this study has been knowledge gained of the extent of manipulation required to obtain the spatially correct geometry and architecture of strata when integrating outcrop and shallow, behind-outcrop data sets.

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GCSSEPM

Reservoir Characterization: Integrating Technology and Business Practices

Roger M. Slatt
Roger M. Slatt
Houston, Texas
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Norman c. Rosen
Norman c. Rosen
Houston, Texas
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Michael Bowman
Michael Bowman
Houston, Texas
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John Castagna
John Castagna
Houston, Texas
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Timothy Good
Timothy Good
Houston, Texas
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Robert Loucks
Robert Loucks
Houston, Texas
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Rebecca Latimer
Rebecca Latimer
Houston, Texas
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Mark Scheihing
Mark Scheihing
Houston, Texas
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Hu Smith
Hu Smith
Houston, Texas
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SEPM Society for Sedimentary Geology
Volume
26
ISBN electronic:
978-0-9836096-4-3
Publication date:
December 01, 2006

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