1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2. School of Oil and Natural Gas Engineering
3. Southwest Petroleum University
4. Chengdu 610500
5. P. R. China
6. Department of Electronics Technology
7. Budapest University of Technology and Economics
8. Budapest H-1111
9. Hungary
10. Department of Chemical & Biomolecular Engineering
11. Ohio University
12. OH 45701
13. USA