Catalogue

PolyIsolite polymer composition

PolyIsolite polymer composition is used to eliminate leaks in string heads and threaded joints as well as casing shoes of oil and gas wells. A heat-resistant grade, PolyIsolite-VT, is produced for the conditions of high downhole temperatures (up to 185°С). PolyIsolite reagent is a multi-component system:
Component 1 is a polymer solution in an organic solvent.
Component 2 is a hardener.
Component 3 (for PolyIsolite-VT) is an accelerator.

 

Product specs

Parameter	PolyIsolite	PolyIsolite-VT
Component 1
Appearance	Yellow to dark brown liquid	Pale yellow to dark brown viscous liquid
Density, kg/m3	-	NLT 1050
Funnel viscosity according to VZ-4 viscosimeter, at 20°С, s	NMT 40	-
Component 2
Appearance	Light yellow to dark brown liquid A greenish coloration is allowed	Colourless to yellow clear liquid
Density, kg/m3	NMT 1100	NLT 1050
Funnel viscosity according to VZ-4 viscosimeter, at 20°С, s	NMT 40
Component 3
Appearance	-	Light yellow to dark brown clear liquid
Density, kg/m3		NMT 1000

 

Application

For PolyIsolite, the composition is prepared by mixing the main component with the hardener in 2:1 volumetric ratio immediately before pumping. For PolyIsolite-VT reagent, the ratio of main component to hardener is 100:70 (by weight). The accelerator consumption is selected in the laboratory depending on the temperature and ranges from 0 to 0.5%.

 

Treatment

Explosive packers and bailing tubes that are run downhole on the logging cable are used to avoid accidents when sealing threads and a leaky production casing.When repairing column heads, small-sized high-pressure pumping units are used. After treatment, the pumping equipment is flushed with a special solvent.

 

Packaging

PolyIsolite polymer composition is supplied in 100-, 200-litre steel drums or in 30-, 40-litre polypropylene canisters.



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