1. 1 Key Laboratory of Drilling and Production Engineering for Oil and Gas, Wuhan, 430100, China
2. 2 School of Petroleum Engineering, Yangtze University, Wuhan, 430100, China
3. 3 Exploration and Development Research Institute of Changqing Oilfield Company, National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields, Xian, 710000, China
4. 4 Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, China