Zwitterionic Strong chochall Airson Drilling Fluid FA367 Sulfomethylated Phenolic ròiseid Giùlan Plugging Angent Airson Drilling Fluid Teòthachd agus salann resistant calcium inhibitory lionn call reducer airson drileadh lionntan JT888 EP Lubricant Potassium Polyacrylamide for Drilling Fluid KPAM Zwitterionic Polymer Viscosity Reducer xy-27 Agent call fluid polymer nàdurrach Ìosal Fluorescence Siùbhlach Lubricant Barite