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The formations of asphalt-resin-paraffin (ARPD) and saline deposits in the tubing string (TS) and in delivery lines are considered as the most urgent problems arising during exploitation of some oil fields in West Siberia. As a consequence - increased equipment failures, shortened cleaning (CP) and overhaul (OP) periods of well operation, as well as the increased pulling the tubing for cleaning and partial replacement causing production tosses and unavoidable environment pollution.