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Poly Anionic Cellulose
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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
(150°C) 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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