1. Shandong Provincial Key Laboratory of Deep Oil and Gas, Qingdao 266580, China
2. School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China
3. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100000, China
4. No.12 Oil Production Plant, PetroChina Changqing Oilfield Company, Xi’an 710200, China