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Book Chapter

Field Analyses

Published:
January 01, 2005

Abstract

To understand where the greatest potential for undiscovered resources lies, a summary of the estimated largest undiscovered fields from the USGS (2000) assessment is included here (Appendices 6, 7). Additionally, analyses of the depth, pressure, and temperature attributes of the world’s oil and natural gas fields provide insights into the world distribution of these parameters.

Appendices 6, 7, 8, and 9 present information about possible locations of large, undiscovered fields in the world by assessment units (AU). Because of the extreme skewness of field-size distributions, much uncertainty exists as to the size of the largest undiscovered fields. The procedure used provides a distribution that shows the uncertainty for size of the largest undiscovered field for each AU (Charpentier and Klett, 2000). Because of high uncertainty, the statistics in Appendices 6 through 9 should be viewed for their relative, rather than absolute, value.

Appendix 6 presents a ranked list of AU by the estimated size of the largest undiscovered oil field. Appendix 7 shows a similar list for the largest undiscovered natural gas field. Appendix 8 shows the ranking of AU by number of expected oil fields with at least 1024 MMBO. Appendix 9 illustrates AU ranking by number of expected natural gas fields with at least 6144 bcf (1024 million BOE).

All four of these appendices show that many of the largest fields remaining to be discovered are expected in Region 2, the Middle East and North Africa. East Greenland is also high on the oil ranking (Appendix 6)

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Contents

AAPG Memoir

Global Resource Estimates from Total Petroleum Systems

Thomas S. Ahlbrandt
Thomas S. Ahlbrandt
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Ronald R. Charpentier
Ronald R. Charpentier
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T. R. Klett
T. R. Klett
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James W. Schmoker
James W. Schmoker
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Christopher J. Schenk
Christopher J. Schenk
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Gregory F. Ulmishek
Gregory F. Ulmishek
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American Association of Petroleum Geologists
Volume
86
ISBN electronic:
9781629810430
Publication date:
January 01, 2005

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