FIELD: oil-and-gas production.
SUBSTANCE: proposed device comprises tubular container located under downhole pump and tube to feed solvent from surface into container. The latter has open bottom and comprises heater with output varying over its length. Container inner surface is coated by heat-insulation composition. Degree of solvent heating in container and its displacement is estimated by means of temperature transducers arranged regularly over container length.
EFFECT: higher efficiency of cleaning.
1 dwg
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