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POLYPLUS polymer is a readily dispersible product designed to provide cuttings encapsulation and shale stabilization. It is formulated for easy mixing with improved dispersion to eliminate “fish-eyes.” This is beneficial when rapidly mixing either large quantities or high concentrations of polymer or where good mixing equipment is unavailable. POLYPLUS also acts as a viscosifier, friction reducer, flocculant, and provides some fluid-loss control.

POLYPLUS is a specially treated, high-molecular-weight acrylic copolymer (PHPA). It can be used in mud systems ranging from low-solids to weighted muds, utilizing makeup waters from fresh to saltwater.


Properties    Value
Physical appearance    . White, granular powder
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%


POLY-PLUS polymer mud systems. 
POLY-PLUS provides cuttings encapsulation and improved wellbore stability. Typical concentrations of POLY-PLUS are 0.25 to 1 lb/bbl (0.71 to 2.85 kg/m3). It is effective in salt muds such as KCl or NaCl-enhanced fluids, although slightly higher concentrations of POLY-PLUS may be required.


POLYPLUS may be used in clear-water, solidsfree, drilling fluids. POLYPLUS enhances solids removal by flocculating the undesired solids and increasing viscosity. The polymer also provides cuttings encapsulation and improved wellbore stability. This system is frequently used in slimhole continuous-coring applications.


POLY-PLUS is well suited to LSND-type muds. In reduced bentonite muds, POLY-PLUS extends bentonite to increase viscosity, flocculates drill solids for more efficient removal, encapsulates cuttings and improves wellbore stability.


POLY-PLUS can be used in weighted muds for cuttings encapsulation, improved wellbore stability, secondary viscosity and to improve the filter-cake integrity. The effectiveness of the polymer is reduced as the concentration of organic anionic dispersants is increased.


Viscous POLY-PLUS sweeps are effective for periodic hole cleaning. Circulating a viscous sweep through the well clears accumulated cuttings and maintains a clean hole.




POLYPLUS may be mixed directly into the active mud system or premixed at higher concentrations in a separate pit or chemical barrel, then blended into the active system. Sweeps may be prepared by mixing POLYPLUS directly in the active system at the suction pit or by premixing a high concentration in a separate pit and allowing the polymer to fully yield before being pumped.


POLY-PLUS reacts with multivalent cations such as calcium. In concentrations greater than 300 mg/l, calcium causes the polymer to precipitate. Use soda ash to remove calcium concentrations above 300 mg/l. Treat cement contamination to keep the calcium and pH as low as possible. Use sodium bicarbonate along with a pH-reducing product such as lignite or citric acid to treat cement contamination. Sulphide scavenger is recommended if hydrogen sulfide gas is encountered. Sulphide scavenger is preferred over liquid products containing zinc. Due to lower solubility, Sulphide scavenger does not react with POLY-PLUS as readily as liquid products that contain zinc.


Readily dispersible and does not form “fish-eyes.”
Excellent cuttings encapsulator that limits cuttings dispersion.
Provides improved shale stabilization.
Powdered material with significantly lower toxicity than invert emulsion liquid polymers.
Highly concentrated product (>90% activity) reduces transportation costs and storage space requirements.
Aids in preventing balling on the bit, stabilizers and bottom hole assembly by coating and lubricating solids.
Enhances the removal of drill solids.
Improves the lubricity of most mud systems, particularly no dispersed muds, when used in combination with low toxicity lubricant
Can be used to viscosify clear-water and low-solids drilling fluids.
Compatible with other polymers such as modified starch, PAC, polyacrylate (low molecular weight), , CMC, starch.


During the initial treatment of POLY-PLUS in a non-dispersed mud system, severe flocculation may occur causing high viscosity until all of the solids are coated.
POLY-PLUS polymer mud systems utilize low concentrations (15 < lb/bbl [< 43 kg/m3]) of Bentonite to reduce this interaction. Continued additions of POLY-PLUS result in a stable system with the desired rheology.

Calcium-sensitive and begins to precipitate when the calcium concentration exceeds 300 mg/l.

pH-sensitive with an optimum pH range of 8.5 to 10.5. At pH levels above this range, hydrolysis may convert acrylamide into acrylate and release ammonia (NH3).

Temperature-stable to approximately 350°F (177°C) although the copolymer may begin to hydrolyze into polyacrylate when exposed to prolonged temperatures above 275°F (135°C) and release ammonia (NH3).

Subject to shear degradation of its viscosity and May eventually lose its ability to viscosify, but cuttings encapsulation and shale stabilization are not affected.


Bioassay information is available upon request.
Handle as an industrial chemical, wearing protective equipment and observing the precautions as described on the Transportation and Material Safety Data Sheet (MSDS).


POLY-PLUS is packaged in 50-lb (22.7-kg), multi-wall, paper sacks. Store in a dry location away from sources of heat or ignition, and minimize dust.
This material is supplied solely for informational purposes and UNIVERSAL makes no guarantees or warranties, either expressed or implied, with respect to the accuracy or use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale.
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