1. 1 PfEFFER Version 2/Pro A Program for Spreadsheet- Based Well Log Analysis

2. 2 Presentation PfEFFER Basis Review and Demonstration of PfEFFER v. 2.0/Pro Examples

3. 3 Basis: Why? PfEFFER: “Petrofacies Evaluation of Formations for Engineering Reservoirs” Petrofacies: “Associations of common attributes of rock texture, pore types, and related properties” Nature of log analysis: Tailor solutions to variations in parameters Review basic concepts used in PfEFFER

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27. 27 Summary of Basis section Petrofacies are important components in log analysis. Approaches are firmly based on traditional log analysis techniques. Parameter definition is facilitated by pattern recognition and interactive procedures. Need software tools to facilitate this analysis.