Description
Therma Thin is a liquid anionic acrylic copolymer used as high temperature deflocculant in a wide range of water-base drilling fluids.
Typical Properties
Appearance : Pale yellow viscous liquid
pH (neat) : 6 .5 - 7.5
Specific Gravity : 1.25 - 1.35
Features and Benefits
Therma Thin is an effective deflocculant in freshwater, seawater, sodium chloride and potassium chloride systems.
Therma Thin works well in low solids, non dispersed polymer-base fluids.
Therma Thin minimizes high temperature gelation in excess of 400 °F (204 °C).
Therma Thin is not affected by calcium contamination or by high levels of salt.
Therma Thin is not pH dependent and works over a wide pH range.
Therma Thin also contributes to filtration control.
Therma Thin is not subject to bacterial degradation and environmentally acceptable.
Application
Therma Thin is used to control fluid rheology and to prevent high temperature gelation in a wide range of water-base drilling fluids.
Limitations
Although Therma Thin is resistant to calcium contamination, high calcium concentrations greater than 500 mg/l dictate increased treatment levels.
Therma Thin becomes less effective in high solids fluids necessitating high treatment levels.
Therma Thin is thermally stable up to 400 °F (204 °C).
Treatment
Normal treatment levels range from 1 to 4 lb/bbl (2.9 to 11.4 kg/m3). The concentration will vary depending on the solids content and composition of drilling fluid system.
Therma Thin is added slowly and uniformly through the mud hopper or directly into the suction pit.
Packaging
Therma Thin is supplied in 25 kg (55 lb) HDPE pails.