Partially Hydrolyzed Polyacrylamide PHPA
Shale Inhibitor / Viscosifier / Flocculant
Product Description
PHPA (powder form) is a readily dispersible additive designed to provide cuttings encapsulation and shale stabilization in freshwater to saltwater drilling fluids ranging from low solids to weighted muds.

PHPA is formulated for easy mixing with improved dispersion to eliminate "fish eyes", which occurs when mixing either large quantities rapidly or mixing high polymer concentrations where good mixing equipment is unavailable. PHPA acts as a viscosifier, friction reducer, and flocculants, while also providing some fluid-loss control. PHPA also delivers cuttings encapsulation and improves wellbore stability, making it ideal for slim hole and continuous-coring applications.
  • Readily dispersible and does not form "fish eyes"
  • Excellent cuttings encapsulation limits cuttings dispersion
  • Improves shale stabilization
  • Powdered material has significantly lower toxicity than invert-emulsion, liquid polymers
  • Highly concentrated product (> 90% activity) reduces transportation costs and storage space requirements
  • Helps prevent balling on the bit, stabilizers and bottom hole assembly by coating and lubricating solids
  • Enhances removal of drill solids
  • Can be used to viscosity clear-water and low-solids drilling fluids
  • Enhance the carrying capacity and half-life of foam drilling fluid
  • Non-fermenting
  • Does not require biocides
  • Stable in monovalent salt (NaCl, KCl, etc.) environments
  • Effective in small concentrations
  • Can be destroyed with oxidizing agents when desired
Technical Data
Appearance White powder
pH 6.0 - 8.0
Molecular weight 8 million-20 million
Recommended Treatment
Add PHPA in concentration of 0.7 to 4.3 kg/m³ (0.2 to1.5 lb/bbl) to any active system. Mix slowly through a jet mixer or sift slowly into the vortex of a high-speed stirrer.
Transportation of commodity name is not restricted by international regulatory agencies.
Safe Handling Recommendations
Utilize normal precautions for employee protection when handling chemical products. Use of standard PPE is recommended for employee comfort and safety. See Material Safety Data Sheet (MSDS) prior to use.
Package and Storage
25kg bags or according to customer's requirement.
Avoid high-intensity extreme pressure and prolonged exposure to strong sunlight. Keep bag closed. Keep away from heat, sparks and flames.