Low-molecular-weight liquid clay inhibitor
Achieve excellent cuttings encapsulation, limit cuttings dispersion, and stabilize shales.
Readily dispersible liquid clay inhibitor
POLY-PLUS RD readily dispersible liquid clay inhibitor is formulated for easy mixing with improved dispersion to eliminate the formation of fish eyes. This is beneficial when rapidly mixing either large quantities or high concentrations of polymer where good mixing equipment is unavailable. The inhibitor acts as a viscosifier, friction reducer, and flocculant. It also provides some fluid loss control.
The inhibitor is a specially treated, high-molecular-weight additive. It can be used in mud systems ranging from low-solids to weighted muds, using makeup waters from freshwater to saltwater.
This inhibitor provides excellent cuttings encapsulation and improved wellbore stability. Typical concentrations of POLY-PLUS RD inhibitor are 0.25 to 1 lb/bbl [0.71 to 2.85 kg/m3]. It is also effective in salt muds, such as KCl- or NaCl-enhanced fluids, although slightly higher concentrations of the inhibitor may be required.
The inhibitor can be used in clear-water, solids-free drilling fluids. This product enhances solids removal by flocculating the undesired solids and increasing viscosity. The polymer also provides cuttings encapsulation and improved wellbore stability. POLY-PLUS RD inhibitor is frequently used in slimhole, continuous-coring applications.
The inhibitor is well suited to LSND systems. In reduced-bentonite fluids, POLY-PLUS RD inhibitor extends bentonite to increase viscosity, flocculates drill solids for more efficient removal, encapsulates cuttings, and improves wellbore stability.
Viscous inhibitor sweeps are effective for periodic hole cleaning. Circulating a POLY-PLUS RD inhibitor sweep through the well helps clear accumulated cuttings and maintain a clean hole.
|Typical Properties in Fresh Water
|Concentration, lb/bbl [kg/m3]
||Plastic Viscosity, cP
||Yield Point, lb/100 ft2
||Marsh Funnel, s/qt
|Typical Physical Properties
||White, granular powder
|pH (1% solution)
||40–46 lb/ft3 [641–737 kg/m3]
|Nature of charge