Friction reducers are typically high-molecular weight polymers of acrylamide in an oil external emulsion. They can be partially hydrolyzed and reacted with other chemicals to yield anionic or cationic products. They function to reduce friction pressures in all types of fluids from acids to hydrocarbons.
ClearSlik - Cationic emulsion polymer that can reduce friction pressures of water by more than 70%. Also adds viscosity to guar and HPG systems to help reduce the required concentration of gelling agent. Usual concentration is 0.5 to 2.0 gal/1,000 gal (0.5 to 2.0 L/m3).
FRA-175 - High-molecular weight, anionic, water-soluble, acrylamide-based copolymer that provides friction pressure reduction in fresh water, KCl, or salt water based fluids. Concentration range is 2.5 to 15 lb/1,000 gal (0.3 to 1.8 kg/m3).
FRA-177 - Partially hydrated, cationic, polyacrylamide copolymer emulsion that is compatible with brines containing potassium, sodium, or calcium chloride, dilute acids, and fresh water systems. Usual concentration is 0.5 to 2.0 gal/1,000 gal (0.5 to 2.0 L/m3).
FRA-700 - Very high molecular weight, anionic polymer suspension that is used as a drag reducer on water injection and disposal wells. Especially effective for saltwater re-injection to increase rates by 20 to 25% at equivalent pressure. Usual concentration range is 15 to 70 parts per million (ppm).
FRA-800 - High molecular weight, anionic, water-soluble emulsion polymer that lowers friction pumping pressures in fresh water and brines. Usual concentration is 0.5 to 2.0 gal/1,000 gal (0.5 to 2.0 L/m3).
OFR-2 - High molecular weight, synthetic polymer that effectively reduces friction pressures up to 60% when pumping hydrocarbons such as kerosene, crude oil, and other refined fracturing oils. Usual concentration is 8 to 10 gal/1,000 gal (8 to 10 L/m3) of base fluid.
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