1. Chevron Energy Technology Company, Earth Sciences Technology Department, Reservoir Characterization Unit, 1500 Louisiana, Houston, Texas 77002.
2. University of Texas at Austin, Department of Petroleum and Geosystems Engineering, 1 University Station, Mail Stop C0300, Austin, Texas 78712. .
3. Anadarko Petroleum Corporation, 1201 Lake Robbins Drive, The Woodlands, Texas 77251. .