[1] Department of Geology and Geological Engineering, University of Idaho, Moscow, ID 83844-3022, United States
[2] Exxon Production Research Company, P.O. Box 2189, Houston, TX 77252, United States
[3] Department of Geology and Geophysics, Rice University, Houston, TX 77005-1892, United States
[4] Department of Geological Sciences, University of Texas, El Paso, TX 77968, United States
[5] 615 Baltimore Drive, El Paso, TX 79902, United States