1. Stephen C. Ruppel, Bureau of Economic Geology, WTGS Symposium 2001, Midland, TX OPPORTUNITIES FOR RECOVERY OF REMAINING OIL IN SAN ANDRES RESERVOIRS: EXAMPLE FROM FUHRMAN-MASCHO FIELD, UNIVERSITY LANDS BLOCK 10, ANDREWS COUNTY, TEXAS Stephen C. Ruppel Bureau of Economic Geology The University of Texas at Austin Austin, TX 78712 ACKNOWLEDGMENTS Funding was provided by The University of Texas System as part of the University Lands Advanced Recovery Initiative.

2. Stephen C. Ruppel, Bureau of Economic Geology, WTGS Symposium 2001, Midland, TX

29. CONCLUSIONS Fuhrman-Mascho San Andres field comprises three very different reservoirs. Each reservoir has distinctive flow unit characteristics. Image logs provide high resolution identification of rock fabrics and architecture. Reservoir quality in the upper San Andres is a function of depositional facies and accommodation. Reservoir quality in the lower San Andres is a function of diagenesis at the G4 sequence boundary. Significant overlooked pay may exist below the lSA CS bounday.