1. Headley, J. A. Lubrication additive for aqueous drilling fluids. US 4572790, 1986.
2. Grodde, K. H.; Schulz, A. Aqueous drilling fluid. U.S. Patent US 4212794A, July 15, 1980.
3. Tian, S. N. The application research of sulphoneic resin in the oil exploit. MA. Thesis, Lanzhou University of Technology, LanZhou, China, 2013.
4. Liu, F. The research and application of drilling fluid lubricant LRH. MA. Thesis, Northeast Petroleum University, DaQing, China, 2015.