2.1991-12-1Assistant Engineer of Development Room 1 of Daqing Oilfield Research Institute
3. 1992-3- 1 Project Leader of Oil Production Room of Daqing Oilfield Research Institute
4. 1993-9- 1 Recovery Room Engineer of Daqing Oilfield Research Institute
5. 1997-9- 1 Senior Engineer of Oil Production Room of Daqing Oilfield Research Institute
6. 1998-4- 1 Director of Oil Production Office of Daqing Oilfield Research Institute
7. 1999-4- 1 Director of Recovery Ratio Room 2 of Daqing Oilfield Research Institute
8.2007-8- 1 Deputy Chief Engineer of Daqing Oilfield Research Institute
Specialty and field: tertiary oil recovery, oil and gas field development.