FIELD: oil production; methods of transportation of oil production of oil wells via pipe lines connecting the well with field tank farm. SUBSTANCE: flow of liquid is treated by pulse cyclic magnetic field at varying intensity. Treatment is repeated; treatment is effected by means of electromagnets distance between which is found from the following formula: 
, where L is distance between electromagnets, m; V is velocity of flow of well liquid in pipe mounted in clearance between electromagnets, m/s and t is duration of treatment cycle, s. EFFECT: enhanced reliability. 2 cl, 2 dwg
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