Sp-101 - Medium Molecular Weight Sodium Polyacrylate, Off-white Flakes, Ph 7 | Fluid Loss Reduction, High-temperature Stability, Bacterial Resistance, Rheology Stabilization

SP-101

SP-101 sodium polyacrylate copolymer is a medium-molecularweight,anionic additive used to reduce fluid loss in freshwater and seawater muds. This synthetic additive has a high temperature limit and is not subject to bacterial degradation

Typical Physical Properties

• Physical appearance- off- white to cream flakes (powder)
• Specific gravity- 1.05
• pH (1% solution)- 7
• Bulk density- 24.5 Ib/ft3 (392 kg/m3)
  

Applications
SP-101 is an effective additive for reducing fluid loss and stabilizing rheology in a wide range of waterbase systems, including low-solids, non-dispersed and dispersed weighted systems. It is most effective in freshwater fluids that are low in soluble calcium. SP-101 is used most often in low-solids, non-dispersed polymer systems such as the POLY-PLUST system and in high- temperature applications. Normal treatments range from 0.5 to 1 lb/bbl (1.43 to 2.85 kg/m3) A viscosity "hump" may occur in non-dispersed or high-solids systems with the initial addition of SP-101 (when the concentration is low, ~0.1 lb/bbl [0.29 kg/m3]). Subsequent treatments will reduce this viscosity "hump" in clean, lowsolids muds. SP-101 attaches to clay particles and helps to form a protective colloid on exposed shales and encapsulated cuttings. SP-101 is also effective as a deflocculant and high-temperature stabilizer in low-solids systems at concentrations greater than 1 lb/bbl (2.85 kg/m3). Pilot tests are recommended prior to treating with SP-101.

Advantages

• Reduces fluid loss and improves filter cake quality
• Thermally stable to >400^OF (>204^OC)
• Not subject to bacterial degradation
• Stabilizes flow properties in hightemperature environments in excess of 400^OF (204^OC)
  

Limitations

• Highly anionic, precipitated by high concentrations of divalent cations such as calcium and magnesium
• Total hardness must be maintained below 320 mg/l with soda ash
• Should not be used in calcium systems such as lime, gyp or untreated seawater muds that have high concentrations of soluble calcium

Toxicity and Handling

• 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)

Packaging and Storage

SP-101 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