1. National Institute of Advanced Industrial Science and Technology (AIST), Sapporo 062-8517, Japan
2. Japan Oil, Gas and Metals National Corporation (JOGMEC), Chiba 261-0025, Japan
3. U.S. Geological Survey, Denver, Colorado 80225, United States
4. National Energy Technology Laboratory, U.S. Department of Energy, Pittsburgh, Pennsylvania 15129, United States
5. Schlumberger, Kanagawa 252-0206, Japan