PAC LV effective in control filtration with minimal increase in rheology functions at all pH ranges performs in various water

PAC LV

Poly Anionic Cellulose -LV is a low-viscosity, tech-grade fluid-loss-control polymer. It is designed for situations where filtration control is needed with only minimal increases in rheology. PAC- LV polymer will perform well in all brine applications, especially saltwater-base fluids. PAC-LV polymer may be used at all densities in either dispersed or non-dispersed systems. PAC-LV polymer will encapsulate solids to control dispersion of active shale.

Typical Physical Properties

Physical appearance	Cream-colored, free flowing powder
Specific gravity	1.5 – 1.8
pH	6.5 – 8.0

Applications

PAC LV polymer controls fluid loss in freshwater, seawater, KCl, and salt water. PAC LV additive aids in the formation of a tough, thin filtercake to minimize the potential for differential sticking. Recommended treatment for PAC LV polymer is from 0.5 to 3.0 lb/bbl (1.5 to 9.0 kg/m3) depending on the water type and the salt level to control fluid loss. PAC LV polymer will be useful in areas where the generation of viscosity build-up should be avoided, but filtration control is required. A concentration of 2.5 lb/bbl (7 kg/m3) of PAC LV polymer in fresh water will provide a viscosity of 15 cP and only a 5-lb/100 ft2 (2.5 Pa) yield-point value. PAC LV polymer will create an envelope around exposed shales and cuttings for encapsulation that reduces dispersion and improves wellbore integrity. Encapsulation protects the shale form exposure to water that tends to destabilize the shale.

Advantages

• Effective in controlling filtration with minimal increase in rheology

• Functions at all pH ranges

• Environmentally acceptable

• Resists bacterial attack, requiring no biocides or preservatives

• Performs in a wide variety of waters

Limitations

 Contains salt as a by-product during processing

• High hardness (>1000 mg/L) and high alkalinity will require treatment to neutralize before

using

• Temperature limit of 250°F (120°C); when approaching this limit use PTS-200. thermal

stabilizer

• Has lower dissolved solids than POLYPAC additives

Toxicity And Handling

HANDLING

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

Packaging And Storage

PAC LV polymer is packaged in 25-kg (55.1-lb), multi-wall, paper sacks. Store in a dry location away from s

ources of heat or ignition, and minimize dust.

Poly Anionic Cellulose PAC LV 70%