1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
2. Unconventional Oil and Gas Science and Technology Institute, China University of Petroleum, Beijing 102249, China
3. Department of Geology, Northwest University, Xi’an, Shanxi 710069, China
4. Exploration and Development Research Institute of Petrol China Changqing Oilfield Company, Xi’an, Shanxi 710018, China