Emma

Definition

PAC-HV is a high-quality, high-molecular-weight polyanionic cellulose polymer designed to increase viscosity while controlling fluid loss in water-based systems. It appears as a white or light yellow, odorless, non-toxic powder that dissolves easily in both cold and hot water. Its properties include excellent thermal stability, salt resistance, and resistance to bacterial degradation, making it suitable for demanding environments.

Uses

  1. Oil and Gas Drilling:
    • Drilling Fluids: PAC-HV is a key additive in water-based drilling muds, where it acts as a viscosifier and fluid-loss control agent. It increases the viscosity of the drilling fluid, improving hole cleaning and the suspension of cuttings. It also forms a thin, strong filter cake on the wellbore wall, reducing fluid loss into the formation and enhancing wellbore stability.
    • Fracturing Fluids: In hydraulic fracturing, PAC-HV helps control viscosity, ensuring efficient delivery of proppants and minimizing fluid loss into the formation.
    • High-Temperature and Saline Environments: It performs effectively in a wide range of conditions, including freshwater, seawater, and saturated brine, withstanding temperatures up to 150°C.
  2. Other Industries:
    • Food Industry: Used as a thickening agent and stabilizer in products like sauces, dressings, and desserts, improving texture and emulsion stability.
    • Pharmaceuticals: Acts as a binder, disintegrant, or suspending agent in drug formulations and liquid suspensions.
    • Construction: Enhances workability, water retention, and consistency in cement- or gypsum-based materials like mortars and plasters.
    • Textiles and Paper: Serves as a sizing agent in textiles or a retention aid in papermaking to improve product quality.

Key Properties

  • High Viscosity: Provides significant thickening and gelling capabilities, ideal for applications requiring enhanced suspension and stability.
  • Fluid Loss Control: Reduces filtration rates in drilling fluids, protecting the wellbore and minimizing environmental impact.
  • Thermal and Salt Tolerance: Maintains performance in high-temperature and high-salinity conditions.
  • Environmental Compatibility: Often biodegradable and non-toxic, aligning with eco-friendly practices in some applications.