Zwitterionic Strong Coating For Drilling Fluid FA367 Sulfomethylated Phenolic Resin Bearing Plugging Angent For Drilling Fluid Temperature and salt resistant calcium inhibitory fluid loss reducer for drilling fluids JT888 EP Lubricant Potassium Polyacrylamide for Drilling Fluid KPAM Zwitterionic Polymer Viscosity Reducer XY-27 Natural Polymer Fluid Loss Agent Low Fluorescence Liquid Lubricant Barite