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Contribution of Outcrop Data to Improve Understanding of Field Performance: Rock Exposures at Eight Foot Rapids Tied to the Aneth Field

By
Donald A. Best
Donald A. Best
1Mobil Exploration and Producing Technical Center, P. O. Box 819047, Farmers Branch, Texas 75381-9047
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Frank M. Wright, III
Frank M. Wright, III
1Mobil Exploration and Producing Technical Center, P. O. Box 819047, Farmers Branch, Texas 75381-9047
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Rajiv Sagar
Rajiv Sagar
2Kelkar & Associates, Inc., 3528 E. 104th St., Tulsa, OK 74137
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L. James Weber
L. James Weber
3Mobil Exploration and Producing Technical Center, P. O. Box 650232, Dallas, Texas 75265-0232
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Published:
January 01, 1995

ABSTRACT

Building an accurate geologic model of a reservoir from well data is a challenge. Subsurface geologic data exhibit considerable variability, and interpretations are dependent on well data that are widely spaced. Outcrop analogs provide an additional source of data. Outcrops are used by geoscientists to gain a better understanding of subsurface geology, particularly reservoir architecture. Reservoir engineers would do well to follow the geoscience lead and use outcrop depiction to investigate how reservoir architecture might influence fluid flow. Rock exposures at Eight Foot Rapids exhibit an excellent Aneth Field reservoir analog, in all its detail. This locality is used to construct a model suitable for investigating, in cross section, the interwell behavior of a waterflood of the Aneth Field algal buildup reservoir. The work is particularly useful for demonstrating the impact of heterogeneity on unsteady state waterflood performance. Results illustrate the consequences of alternative well-to-well correlations.

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Contents

SEPM Short Course Notes

Hydrocarbon Reservoir Characterization: Geologic Framework and Flow Unit Modeling

Emily L. Stoudt
Emily L. Stoudt
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Paul M. Harris
Paul M. Harris
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SEPM Society for Sedimentary Geology
Volume
34
ISBN electronic:
9781565761032
Publication date:
January 01, 1995

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