M-I PAC UL additive is designed for situations where filtration control is needed with only minimal increases in rheology. This additive will perform well in all brine applications, especially saltwater-based fluids and can be used at all densities in either dispersed or nondispersed systems. 

M-I PAC UL polymer will encapsulate solids to control dispersion of active shale.

M-I PAC UL additive controls fluid loss in freshwater, seawater, KCl, and salt water. It also aids in the formation of a tough, thin filtercake to minimize the potential for differential sticking.