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THE USE OF SEISMIC ATTRIBUTES FOR A GEOSTATISTICAL BASED INTEGRATED RESERVOIR DESCRIPTION AND UNCERTAINTY ASSESSMENT

By
MIKE BAHORICH
MIKE BAHORICH
Amoco Exploration & Production 1670 Broadway Denver, Colorado 80201, USA
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LYNN PEYTON
LYNN PEYTON
Amoco Exploration & Production 1670 Broadway Denver, Colorado 80201, USA
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ANTHONY A. VASSILIOU
ANTHONY A. VASSILIOU
Amoco Exploration & Production Technology Group 4502 E. 41st Street Tulsa, Oklahoma 74102, USA
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RICHARD L. CHAMBERS
RICHARD L. CHAMBERS
Amoco Exploration & Production Technology Group 4502 E. 41st Street Tulsa, Oklahoma 74102, USA
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GREG A. PARTYKA
GREG A. PARTYKA
Amoco Exploration & Production Technology Group 4502 E. 41st Street Tulsa, Oklahoma 74102, USA
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J. MICHAEL ROSS
J. MICHAEL ROSS
Amoco Exploration & Production Technology Group 4502 E. 41st Street Tulsa, Oklahoma 74102, USA
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Published:
December 01, 1996

ABSTRACT

Amoco’s Mid-Continent Business Unit acquired a 3-D seismic data set to aid in the delineation of a Morrowan age channel sand whose thickness can be below seismic resolution. There were twenty-two existing wells prior to seismic data acquisition. Attempts to correlate sand-thickness with traditional seismic attributes were unsuccessful; however, a peak-to-trough time difference attribute has a very high correlation coefficient (p = 0.94) with sand-thickness. On the basis of this correlation, geostatistical methods were used to quantitatively integrate the two data types and assess uncertainty in the results. Post processing of thirty geostatistical conditional simulations created risk and iso-probability maps for sand-thickness. These results predicted a 75% chance (probability) of encountering 80 ft of sand at a proposed well location; subsequent drilling confirmed 78 ft of sand.

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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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