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  • Polyanionic Cellulose (PAC) (Polyanionic Cellulose) is a kind of nonionic cellulose ether featured the properties of high purity, high DS, particularly high viscosity or low viscosity.
  • Polyanionic Cellulose (PAC) is an indispensable product for drilling mud making.
  • PAC is white or yellowish powder, which is non-toxic, odorless, and solvable in water, with stable resistance to heat, salt and bacteria.
  • Polyanionic Cellulose (PAC) is a good drilling mud additive and also an important material for confecting well liquid, a high mud volume product that featured high acid-resistance and salt-resistance ability.
  • Polyanionic Cellulose (PAC) is a good filtrate reducer with the capacity of increasing viscosity and anti-high temperature
    (150C) in the freshwater, seawater, or even saturated brine well-completion liquid.
  • PAC is not susceptible to bacterial attack.
  • PAC has an affinity for clay surfaces and will restrict their hydration and dispersion.
  • Poly-anionic cellulose is derived from Carboxy methyl cellulose and is also used in oilfield practice.
  • PAC-ELV low viscosity polyanionic cellulosic polymer is used primarily as a fluid loss reducer. PAC ELV polymer is a high performance product, readily dispersible in water base drilling fluids ranging from fresh to saturated salt water. It is primarily used in weighted systems to avoid an uncontrollable viscosity build up.
  • PAC application in the drilling fluid. PAC for fluid loss and filtration controller is ideal, PAC fluid mud can be prepared in high salt medium clay and shale inhibition dispersion and expansion of the shaft so that the pollution under control.
  • Polyanionic Cellulose (PAC) -LV is for use in solids-laden, water-based drilling fluids, which can effectively reduces the
    filtration rate of many water-based drilling fluids, without causing significant increases in viscosity or gel strength.
  • PAC minimizes mud costs as it is effective at low concentration and also it has a resistance against ions and is effective over a wide ph range.
  • PAC has good properties of salt resistance and temperature resistance, PAC is especially better then CMC and also it have good non-Newtonian fluid, can effectively control the mobility of mud.

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