1. Shaanxi University Engineering Research Center of Oil and Gas Field Chemistry, Xi’an Shiyou University, Xi’an 710065, China
2. Xi’an Changqing Chemical Group Co., Ltd., Xi’an 710018, China
3. Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, Xi’an Shiyou University, Xi’an 710065, China
4. Department of Crop Soil Sciences, Washington State University, Pullman, WA 99163, USA
5. Department of Statistics, North Dakota State University, Fargo, ND 58102, USA