Polyswell is a copolymer which is used in lost circulation. It can expand up to 200 times its volume in water. The typical dosing is 1-2%.
Technical Specification
Items
Indicators
Appearance
White powder or particles
Particle Size, mm
Can be adjustable
Swelling Rate，times
200 times
Features
It can be prehydrated before adding.
Because of its swelling capacity, polyswell can accumulate in a variety of fracture sizes.
It can be fully hydrated in 20-30 minutes.
It can be directly added into the drilling fluid.
Package and Storage
They shall be packaged in a triple sack with the lined bag. The net weight of each sack is 25kg. They shall be stored in a shady, dry, and ventilated place.
Safety
They shall be avoided contact with eyes, skins and clothes, otherwise flush it with water. Handling methods and dangerous data shall be referred to MSDS.
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