1. College of GeoExploration Science and Technology, Jilin University, Changchun, Jilin, China
2. No.3 Oil Production Plant, Changqing Oilfield Company, Yinchuan, Ningxia, China
3. No.12 Oil Production Plant, Changqing Oilfield Company, Qingyang, Gansu, China
4. Second Oil Production Plant, Changqing oilfield Company, Qingyang, Gansu, China
5. Oilfield Development Institute,Research Institute of Petroleum Exploration and Development, Beijing, China