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IMAGING ELEMENTS OF DEPOSITIONAL SYSTEMS WITH 3-D SEISMIC DATA: A CASE STUDY

By
HENRY W. POSAMENTIER
HENRY W. POSAMENTIER
ARCO Exploration and Production Technology 2300 West Plano Parkway Plano, Texas 75075
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GEOFFREY A. DORN
GEOFFREY A. DORN
ARCO Exploration and Production Technology 2300 West Plano Parkway Plano, Texas 75075
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MARY J. COLE
MARY J. COLE
ARCO Exploration and Production Technology 2300 West Plano Parkway Plano, Texas 75075
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CHARLES W. BEIERLE
CHARLES W. BEIERLE
ARCO Exploration and Production Technology 2300 West Plano Parkway Plano, Texas 75075
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STEVEN P. ROSS
STEVEN P. ROSS
ARCO Exploration and Production Technology 2300 West Plano Parkway Plano, Texas 75075
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Published:
December 01, 1996

ABSTRACT

Time slices and horizon slices have been utilized to extract stratigraphic information from a 3-D seismic data set in order to develop techniques for imaging elements of depositional systems. Many of the stratigraphic details that this work has yielded would have been virtually impossible to recognize on vertical seismic sections without knowing beforehand that these features were present. Some of these features include braided stream channels, tributary stream channels, channel scroll bars, incised valleys, deep-water leveed channels, deep-water incised channels, and glacial features such as kames and kettles.

To illustrate the type of stratigraphic information potentially present within 3-D seismic data volumes, an analysis of a 3-D seismic survey from an offshore shelf location is presented. The analysis involved slicing through the data volume using a variety of procedures including planar-horizontal time slices, inclined planar slices, and horizon-parallel slices. The elements of various depositional environments observed (from bottom to top) include:

  • 1) a low-sinuosity, deep-water incised channel approximately one kilometer wide,

  • 2) a deep-water leveed channel system approximately 150 meters wide.

  • 3) several slump scars interpreted to have formed in a slope setting,

  • 4) a glacial outwash plain pitted with small kettles,

  • 5) a widespread network of braided stream deposits,

  • 6) several large (approximately one kilometer wide) smooth-walled glacial meltwater channels,

  • 7) small tributary fluvial channels 100-200 meters wide, and

  • 8) linear iceberg scour striations.

With the exception of the large smooth-walled glacial meltwater channels, none of these depositional system elements had been recognized prior to slicing through the data volume.

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Contents

GCSSEPM

Stratigraphic Analysis Utilizing Advanced Geophysical, Wireline and Borehole Technology for Petroleum Exploration and Production

Jory A. Pacht
Jory A. Pacht
Seis-Strat Servies, Inc. Sugar Land, Texas
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Robert E. Sheriff
Robert E. Sheriff
University of Houston Houston, Texas
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Bob F. Perkins
Bob F. Perkins
GCSSEPM Foundation West Hartland, Connecticut
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SEPM Society for Sedimentary Geology
Volume
17
ISBN electronic:
978-0-9836097-6-6
Publication date:
December 01, 1996

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