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Book Chapter

Geostatistical Methods for the Study of Pressure Compartments: A Case Study in the Hilight Oil Field, Powder River Basin, Wyoming

By
H. P. Heasler
H. P. Heasler
University of Wyoming Laramie, Wyoming, U.S.A.
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L. Borgman
L. Borgman
University of Wyoming Laramie, Wyoming, U.S.A.
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X. Chen
X. Chen
University of Wyoming Laramie, Wyoming, U.S.A.Present address: University of Nebraska, Lincoln, Nebraska, U.S.A.
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Published:
January 01, 1994

Abstract

This chapter introduces the variogram method for analyzing the geometry of pressure compartments. Pressure and hydraulic head data from 192 wells in the Hilight oil field, Powder River basin, Wyoming, were used in this study. Variograms were calculated for various directions. Results indicate that hydraulic head and pressure are spatially correlated, especially in directions parallel to the axes of elongation of compartment cells. The average pressure compartment was estimated via the variogram method to be an ellipse with major and minor axes of 5.3 and 2.7 mi (8.5 and 4.3 km). The major axis trends 15° azimuthally, the minor axis 285°.

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Contents

AAPG Memoir

Basin Compartments and Seals

Peter J. Ortoleva
Peter J. Ortoleva
Department of Chemistry Indiana University Bloomington, Indiana
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American Association of Petroleum Geologists
Volume
61
ISBN electronic:
9781629810935
Publication date:
January 01, 1994

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