- regulation of filtration properties in low-mineralized water-based drilling fluids
NORTROL is a powdered synthetic sodium polyacrylate polymer used as a primary filtration regulator in brackish water-based drilling fluids.
Low molecular weight.
NORTROL is a pure synthetic polymer that does not undergo bacterial degradation and is stable for a long time in the drilling fluid.
The temperature of stability is about 200 ºС, which makes it possible to use it to control filtration in deep high-temperature wells.
NORTROL is used in a wide variety of water-based drilling fluids, including fresh, lignosulfonate treated, low solids, and heavyweight systems.
The optimum effect is achieved with fresh drilling fluids.
Improves filtration control by adsorbing on the surface of solid particles in the drilling fluid, clogging pore spaces, which leads to a decrease in the permeability of the filter cake.
For optimal application results, the calcium level should not exceed 400 ppm.
NORTROL also has a positive effect on the stability and rheology of the drilling fluid, exhibits poor flocculant properties and can also increase bentonite yield.
|The recommended processing level for NORTROL is a concentration of 1.5 to 6.0 kg / m³. To achieve maximum performance, it is recommended that the respective mud system be pretreated with this material prior to drilling active clays and shales.|
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