Effectively disperses non-aqueous residual fluid, leaving well tubing and casing wet. Also used when displacing water-based solutions.
The standard dosage is between 0.4 and 0.75 kg/m³ and provides good performance in most conditions. In areas with heavy shale, a concentration of 12 to 18 kg/m³ is recommended to minimize clumping on the bit and BHA; higher concentrations can cause foaming and the need for antifoam. ULTIMASURF is effective in all water-based systems, including fresh and sea water, saturated brines.