1. Bob L. Herd Department of Petroleum Engineering, Texas Tech University, 807 Boston Avenue, Lubbock, TX 79409, USA
2. John A. Reif, Jr. Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA
3. Department of Civil Engineering, New Mexico State University, Las Cruces, NM 88003, USA
4. FIRST Exploration and Petroleum Development Company, Lagos, Nigeria
5. TRC Consultants, LC (PHDWin), 5806 Mesa Dr #215, Austin, TX 78731, USA