POLY-PLUS RD Readily Dispersible Liquid Clay Inhibitor | Schlumberger

POLY-PLUS RD

Readily dispersible liquid clay inhibitor

Drilling Fluid Additives - combo

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.

POLY-PLUS RD inhibitor is certified to NSF/ANSI 60.

POLY-PLUS RD inhibitor fluid systems

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.

Clear-water fluids

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.

Low-solids, nondispersed (LSND) fluids

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.

POLY-PLUS RD inhibitor sweeps

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
0.125 [0.4]
2
1
28
0.25 [0.7]
3
2
31
0.50 [1.4]
4
4
34
0.75
6
8
46
1.00
9
11
60
1.50
12
17
110

 

Typical Physical Properties
 
Physical appearance
White, granular powder
Odor
Slightly hydrocarbon
Specific gravity
1.25–1.40
pH (1% solution)
7.7
Bulk density
40–46 lb/ft3 [641–737 kg/m3]
Nature of charge
Anionic
Activity
>90%

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