1. Department of Earth Resource Engineering and Environmental Science, Akita University, Graduate School of International Resource Sciences, 1-1 Tegata Gakuen-machi, Akita 010-8502, Japan
2. Center for Regional Revitalization in Research and Education, Akita University, 1-1 Tegata Gakuen-machi, Akita 010-8502, Japan
3. The Unconventional Oil and Gas Institute, Changping, China University of Petroleum-Beijing, Beijing 102249, China
4. Graduate School of International Resource Sciences, Department of Earth Resource Engineering and Environmental Science, Akita University, 1-1 Tegata Gakuen-machi, Akita 010-8502, Japan