FIELD: gas-oil production, particularly preparation for sulfuric oil, gas and water transportation. SUBSTANCE: boreholes products are cleared from sulfur and its compounds by contacts with copper, sulfur and its compounds settling out on copper with following removal of settled sulfur. Copper is used in the form of thin layer just deposited on iron charger. Iron powder, filings, chips, wire, plates or net are used as iron charger. EFFECT: method allows to improve quality of oil. 2 cl
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