Lower pump pressures result in long

Lower pump pressures result in longer life for the coil. To minimize pump pressure, it is important to use a clean fluid that provides minimal plastic viscosity as well as drag reduction inside the drill-string. The optimum fluid uses only a small amount of F LO -V IS T polymer for viscosity, keeping solids content to about 1% or less. The viscosity created has low-plastic viscosity, good yield point and gels, and excellent low-shear viscosity. Elevated-plastic viscosity translates into higher pump pressure, whether caused by solids, polymers or emulsions. Drag reduction is the ability of a fluid or material to decrease