FIELD: oil and gas industry.
SUBSTANCE: invention is intended for use in the oil industry and can be used in the operation of wells in which elevated deposits of various kinds are formed, for example, asphalt-resin-paraffin deposits. When carrying out the method, the level of the liquid in the borehole is preliminarily reduced to an allowable possible depth and the productivity of the electric centrifugal pump (ECP) increases for the period of the solvent movement along the shell side. When the solvent hits the ECP impellers, the pump output decreases, so that the contact time of the reagent increases with the deposits in the pump and the elevator pipes. Monitoring of the process is carried out by means of constant or periodic monitoring of the dynamic level of fluid in the well.
EFFECT: efficiency of washing the tubing column with an organic solvent is improved by delivering the reagent along the annular space of the well in a short period of time.
1 cl, 1 dwg
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