M‐I PAC R

Polyanionic cellulose fluid-loss additive

M‐I PAC R polyanionic cellulose controls fluid loss in freshwater, seawater, KCl, and saltwater drilling fluid systems. M‐I PAC R agent is a regular tech‐grade quality PAC, useful in controlling filtration and increasing rheology in all types of water, but is particularly effective in saltwater brines. M‐I PAC R additive will aid in dispersion control by attaching and encapsulating the drill solids. It may be used at all density ranges, and functions effectively in dispersed and non‐dispersed systems.

M‐I PAC R additive aids in the formation of a tough, thin filtercake to minimize the potential for differential sticking. M‐I PAC R agent is useful in viscosifying all types of water to create sufficient yield point to assist in the carrying capacity of solids for improved hole cleaning. M‐I PAC R product will create an envelope around exposed shales and cuttings to encapsulate them, reducing dispersion and permitting improvement of wellbore integrity. The encapsulation protects the shale from exposure to water.

Advantages

• Effective in controlling fluid loss
• Resists attack from bacteria, requiring no preservatives or bactericides
• Environmentally acceptable
• Depending on water quality, provides viscosity
• Functions at all ranges of pH levels in both dispersed and non‐dispersed fluids