FIELD: oil industry, particularly for getting oil from wells provided with electric centrifugal submerged pumps under difficult geotechnical conditions, namely in presence of considerable asphalto-paraffin deposits or water encroachment and in the case of crossing well with permafrost beds.
SUBSTANCE: device comprises body and current lead unit having cable. Metal rod of current lead unit is installed in the body connected to bridge by threaded connection through seal rings. Electric heater is made as central current-leading anode-electrode isolated from the body and immersed in electrolyte, namely in mineralized well liquid, for instance in water emulsified in oil. Central rod has lower threaded part in which replaceable rod with dielectric adjusting means connected thereto is arranged.
EFFECT: increased oil production and well cleaning intensity, increased well cleaning rate.
1 dwg
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