1. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, China
2. Chuanzhong Oil and Gas Field, Southwest Oil and Gas Field, PetroChina, Suining, China
3. Oil and Gas Technology Research Institute, PetroChina Changqing Oilfield Company, Xi’an, China
4. National Engineering Laboratory for Low Permeability Oil and Gas Field Exploration and Development, Xi’an, China