| Polyanionic Cellulose referred to as PAC, is made from natural cellulose by chemical modification and the obtained water-soluble cellulose ether derivatives, is an important water-soluble cellulose ether, its sodium salt is usually applied. Polyanionic Cellulose has good heat stability and salt tolerance, anti-bacterial and strong. The product is prepared with a good drop of fluid mud water loss, inhibition, higher temperature resistance. Widely used in oil drilling, especially offshore oil drilling wells and salt water. Guide to oil drilling applications：
● Replace high, instead of uniformity, transparency, control viscosity and lower water loss; suitable for fresh water or sea water, saturated salt water, any water-based mud;
● The product slurry prepared with a good fluid loss, inhibition and high temperature properties;
● The product is prepared using a slurry rheology, high-salt medium in inhibiting the dispersion of clay and shale and expansion, so that the wall of pollution under control;
● Stability of soft soil structure and prevent the water level rise caused by wall collapse;
● Wells drilled through the rock faces, cuttings in the mud slowed the accumulation of solids;
● Inhibition of drill pipe in the turbulence intensity, the return system to maintain the minimum pressure loss;
● The mud can increase the amount of mud to reduce fluid loss;
● Can stabilize the slurry bubble;
● PAC is an excellent repair and drilling mud drilling fluids, fracturing fluid is efficient.
Na-CMC and PAC model and the major role of plasma：
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Specification
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Filtration loss
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Thickening
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Shale inhibition
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PAC-HV
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☆☆☆☆
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☆☆☆☆
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☆☆☆☆
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PAC-LV
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☆☆☆☆
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☆☆
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☆☆☆
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|
CMC-HV
|
☆☆
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☆
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☆☆
|
|
CMC-LV
|
☆☆
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☆
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☆
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