1. School of Earth Sciences, Northeast Petroleum University, Daqing 163318, China
2. Exploration and Development Research Institute, Jidong Oilfield Company, PetroChina, Tangshan 063004, China
3. Exploration Department of PetroChina Changqing Oilfield Company, Xi’an 710018, China
4. Department of Geology, Surveying and Mapping, Shanxi Institute of Energy, Taiyuan 030600, China