1. China University of Petroleum (East China), Key Laboratory of Deep Oil and Gas, Qingdao, Shandong 266580, China; China University of Petroleum (East China), School of Geosciences, Qingdao, Shandong 266580, China; and Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong 266580, China.(corresponding author); .
2. University of Texas at Austin, Hildebrand Department of Petroleum and Geosystems Engineering, Austin, Texas 78731, USA..
3. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu 610058, China..