Relative Uncertainty of Conventional Natural Gas Plays in the Gulf Coast Region

Contents
Introduction
Methodology
Gulf Coast Region Gas Plays
Possible Criteria for Reevaluation of Gulf Coast Gas Plays
Causes of Uncertainty: Examples of Uncertain Plays
Discussion
References Cited

Figures
1. Diagram showing estimated cumulative probability distributions undiscovered conventional nonassociated gas resources for two
plays having the same mean and illustrating the difference in range F95 and F 5 fractiles
2. Plot of play uncertainty coefficient versus mean undiscovered gas resource for 61 conventional gas plays in the Gulf Coast Region

Tables
1. Geologic characteristics and estimated undiscovered nonassociated resources for 61 gas-bearing plays in the Gulf Coast Region from the U. S. Geological Survey 1995 National Petroleum Assessment
2. Summary data for the 20 nonassociated conventional gas plays in the Gulf Region with the highest and lowest uncertainty coefficients from plays in table
3. Geologic characteristics and estimated undiscovered nonassociated resources for 14 gas-bearing plays in the Gulf Coast Region that form priority list for reevaluation
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