High Viscosity Polyanionic Cellulose (PAC-HV)

High Viscosity Polyanionic Cellulose (PAC-HV)


The drilling and completion fluid technique is an important part of oil drilling project and plays a critical role in ensuring safe, high-quality and fast drilling. As a kind of treating agent to improve the drilling and completion fluid performance, the cellulose ether has an important role in reducing fluid loss and increasing viscosity.

PAC HV can improve the coagulation stability of the system by forming a relatively thick solvent absorption layer on the particle surface of drilling fluids, reduce the electrostatic attraction between particles by absorbing fine particles of clay and thus increasing the surface charge of particles, and the permeability of filter cake by enhancing the viscosity and capability to plug holes of filtrate

PAC HV easily disperses in all water-base drilling fluids and applicable from fresh water to saturated salt water drilling fluids. In low-solid and solid-free drilling fluids, PAC HV can strikingly reduce the filter loss as well as the filter cake thickness, and shows strong inhibitory effects on the shale hydration.


It is a high quality water soluble cellulose derivative. In shape of white or light yellow free-flowing powder, it is odorless, tasteless, non-toxic & non-fermented, and has good thermal-stability and high salt resistance. It is soluble into water to form thick liquid, and it widely used in water-base drilling fluid so as to enhance the drilling fluid viscosity and control the fluid loss. It meets API international standard.

Quality Specifications

Item Specification
Presence of starch deterivatives absent
Moisture, % ≤10
Apparent viscosity ≥50cP
API Filtrate Volume ≤23ML


PAC-HV widely used in water-base drilling fluid for a variety of applications, such as filtration control, viscosity and shale inhibition.

Method of Addition

The common dosage is usually 0.2-0.6 %.


l  Compatible with most chemicals used in drilling fluids.

l  Environmentally safe.

Package and storage

The product is usually kept in multi-wall bags with polythene layer inner, and the net weight of each bag is25 kg. Special packages are available based on customers’ requirements. The product must be kept in shady, dry and ventilated warehouse. It should be prevented from sun and rain, and positioned in some place away from heat and fire. The expiration period is 24 months. It should not be utilized unless examined and qualified if out of expiration.


Handle as an industrial chemical, wearing protective equipment Avoid contacting eyes, skin and clothes. Otherwise, wash with a flush of water. Please refer to Material Safety Data Sheet (MSDS) for safe handling and hazard data.


Sidley Chemical Co.,Ltd is one of the most famous Polyanionic Cellulose PAC-HV suppliers in China. If you buy Polyanionic Cellulose PAC-HV or inquiry Polyanionic Cellulose PAC-HV price,please e-mail us through: [email protected] .

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