1. School of Petroleum Engineering, Yangtze University, Wuhan 430100, China
2. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
3. Bureau of Economic Geology, Jackson School of Geosciences, The University of Texas at Austin, Austin, Texas 78713, United States
4. Key Laboratory of Tectonics and Petroleum Resources, Ministry of Education, China University of Geosciences, Wuhan 430074, China