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Molecular Formula: [C6H7O2(OH)2CH2COONa]n
Structural Formula:
Property:
PAC (Polyanionic Cellulose) is a kind of nonionic cellulose ether featured the properties of high purity, high DS, particularly high viscosity or low viscosity. These products are demi-natural polymer additive, thickening agent, filtrate reducer.
PAC is an indispensable product for drilling mud making. PAC is high purity product; the water solution of this white powder is transparent and viscid. As water-soluble polymer, it dissolves immediately in cold/hot water and can be used as a thickening agent, rheology controller, bond, stabilizer, colloid protector, suspending agent, and filtrate reducer.
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. It 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. It is suitable for confecting the completion fluid with these 3 kinds of water above.
Specification:
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Test Item
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Standard
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PAC-LV
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PAC-HV
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Appearance
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Freely flowable powder
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Freely flowable powder
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PH
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6.0-8.0
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6.0-8.0
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Purity %
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≥95%
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≥95%
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Moisture %
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≤10%
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≤10%
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D.S
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≥0.90
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≥0.90
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Viscosity Brookfield 1%
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≤50
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≥1500
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API Fluid Lose
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Increase 0.57%
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≤25.0 ml
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≤20.0ml
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Increase 0.86%
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≤15.0 ml
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≤15.0ml
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Increase 1.14%
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≤10.0 ml
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≤10.0ml
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YP Value
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Increase 0.57%
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≤0.5
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≥2.4
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Increase 0.86%
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≤1.0
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≥9.6
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Increase 1.14%
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≤1.5
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≥19.2
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NOTE: The parameters can be adjusted as per requirements.
Usage:
PAC-HV is for water-based drilling fluids, which can effectively reduces the filtration rate of many water-based oil and gas drilling fluids and may also be used to increase and stabilize viscosity to improve hole cleaning and suspension properties in a wide variety of fluid environment.
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 R is a cost-effective additive to reduce API filtration rate of many water based drilling fluids including freshwater, seawater, saturated saltwater and solids-free brines, native mud, flocculated mud, inhibited mud and contaminated systems. PAC R increases and stabilizes viscosity to improve rheology, wellhole cleaning and suspension property by coating and encapsulating cuttings and solids of drilling fluids. PAC R is effective over a wide range of pH environments. It lubricates solids in the system, improve wallcake characteristics and reduces the potential for stuck pipe.
Package and Storage:
Packed in multiply paper bags or fiber drums (25KG), or as per customer requirement; keep dry.
Key Words:
PolyAnionic Cellulose, PAC, Cellulose
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