DEVICE FOR PROTECTION OF GAS PRODUCING WELLS FROM CORROSION

摘要

FIELD: gas and oil production. ^ SUBSTANCE: device for protection of gas producing wells from corrosion is equipped with pump and compressor pipe and casing pipe, cathodic protection station. Station cathode is connected to the casing pipe featuring through orifices in extra-packer zone with total area of 5-30 cm2 per each square metre of casing pipe surface. The bigger is well depth, the higher is total orifice area. Extra-packer pipe space is filled with electrolyte through the whole height. ^ EFFECT: increased protection level against corrosion of both external and internal casing pipe surface and external surface of pump-compressor pipe. ^ 1 dwg