1. Xi’an Light Industry Research Institute
2. CNPC Chuanqing Drilling Engineering Co.
3. Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, Xi’an Shiyou University, Xi’an, China
4. Xi’an 3-D Technology Development Ltd, Xi’an, China
5. State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing, China