1. Northeast Petroleum University, School of Earth Science, Daqing 163318, China..
2. Northeast Petroleum University, Institute of Unconventional Oil & Gas, Daqing 163318, China.(corresponding author).
3. Chinese Academy of Science, Institute of Geology and Geophysics, Beijing 100029, China..
4. Exploration & Development Research Institute of Daqing Petroleum Administrative Bureau, Daqing 163712, China..