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Book Chapter

The Impact of Vertical Averaging on Hydrocarbon Volumetric Calculations—A Case Study

By
Larry E. Denver
Larry E. Denver
Stratamodel, Inc. Houston, Texas, U.S.A.
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Danny C. Phillips
Danny C. Phillips
Stratamodel, Inc. Houston, Texas, U.S.A.
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Published:
January 01, 1992

Abstract

Accurate hydrocarbon volumetrics can only result from detailed reservoir description. Two-dimensional techniques have traditionally served to quantify reservoir description. However, two-dimensional characterization of three-dimensional heterogeneities may not yield acceptable volumetric analysis in heterogeneous reservoirs. The primary pitfall in the traditional methodology is the inherent vertical averaging. In the case studies that follow, volume discrepancies as high as 21% are documented between three-dimensional modeling and two-dimensional mapping. This paper focuses on the deleterious impact of vertical averaging on reservoir characterization and hydrocarbon volumetric calculations and demonstrates that three-dimensional geologic block modeling is a more accurate alternative to traditional volumetric techniques.

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Contents

Computer Applications

Computer Modeling of Geologic Surfaces and Volumes

David E. Hamilton
David E. Hamilton
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Thomas A. Jones
Thomas A. Jones
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American Association of Petroleum Geologists
Volume
1
ISBN electronic:
9781629811055
Publication date:
January 01, 1992

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