1. Exploration and Development Research Institute, Daqing Oilfield Co., Ltd., Daqing, Heilongjiang 163712, China; Heilongjiang Key Laboratory of Reservoir Physics & Fluid Mechanics in Porous Medium, Daqing, Heilongjiang 163712, China.
2. Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum Univ., Daqing, Heilongjiang 163318, China (corresponding author).
3. Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum Univ., Daqing, Heilongjiang 163318, China.