FIELD: soil or rock drilling.
SUBSTANCE: invention relates to drilling of oil and gas wells, in particular, to anti-adhesion additives to drilling fluids. Glycerol-based drilling fluid additive contains the following components vol.%: glycerol (glycerine) C3H5(OH)3 88; emulsifier – polyalkylene glycol monoalkyl ester based on fatty acid with oxyethylene 10, hydrophobizator – monoalkylamine 2.
EFFECT: low adhesion of clay particles to metal surfaces owing to improved surfactant properties of flushing liquids, improved rheological properties thereof by reducing viscosity and high lubricating properties, high mechanical drilling speed.
1 cl, 3 tbl
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Authors
Dates
2020-01-31—Published
2019-02-04—Filed