FIELD: oil production. SUBSTANCE: anode members of a material of higher electrochemical potential with respect to the material of tubing string is installed along the tubing string length. Anode member, i.e. metal protector, is made in the form of hollow cylinder and has a belt in its upper portion that is extended about external generatrix of the cylinder. The protector as a belt is installed in the gap between tubes so as to provide electrical contact. Electric current is generated in water/gas/oil environment (electrolyte). The old protectors are substituted for new ones as they destroyed. EFFECT: protection from corrosion. 2 cl, 2 dwg
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