Polyanionic Cellulose /PAC R/PAC HV

1- Premium grade purified high viscosity 2- Hight molecular weight 3- Applied to World Top 50 Oil Company

PAC HV (PAC R) is a premium grade purified high viscosity, high molecular weight, polyanionic cellulose, designed to provide viscosity and reduce API filtration rate to water-based drilling fluids. PAC HV can meet requirement of M-I SWACO, HALLIBURTON, BAKER HUGHES.

Advantages

Reduces the filtration rate of the fluid

Increases and improves the fluid rheology (including suspension and hole cleaning)

Stabilizes fluid rheology in the presence of contaminants

Coat and encapsulate cuttings and solids in the drilling fluid, thereby inhibiting the swelling and disintegration of water sensitive solids

Improves the character and consistency of wall cake, thereby reducing the potential for stuck pipe

Application Range and Method

When use, directly mixed into drilling fluid.

Recommend dosage:

Add 0.5-2.0 lb/bbl (1.43-5.71 kg/m³) of PAC-HV filtration control agent slowly through the mud hopper.

Technical Data

Item	Specification
	PAC HV (ISO/API)	PAC HV	PAC HV Plus	PAC DHV Plus
Test method	API	Chevron spec and test method
Apparent viscosity sea water/KCl mud	50 mPa.s Min	6 mPa.s Min	N/A	N/A
API filtrate volume freshwater mud	N/A	N/A	8.0 mL Max	8.0 mL Max
API filtrate volume sea water/KCl mud	23 mL Max	26.0 mL Max	26.0 mL Max	26.0 mL Max
Bulk density	0.64 -0.88g/cm3
Appearance	Off-white, free-flowing powder
Particle size	Not bigger than 0.8mm (20 mesh)	99% Min, passing through 30 mesh screen
Degree of substitution	0.9 Min	1.0 Min
Moisture content, %	10.0 Max	9.0 Max	N/A	N/A
Dispersibility	N/A	N/A	N/A	Dispersible

Polyanionic Cellulose /PAC R/PAC HV