In recent years, due to the switchover of the increasing number of fields to mature production stages characterized by high water cut and mineralization of wells production, and due to extensive involvement of heavier carbonic oils forming high- resistant emulsions into development as well, which is more significant, the problem of oil preparation for its refining becomes more pressing at a time, when the requirements for commercial oil have toughened.

Among all presently known methods of oil demulsification the most progressive and efficient ones are the methods of electrical demulsification [1, 2], used both at the stage of deep dehydration (as a rule) and at the stage of deep desalting under field and refinery conditions (always). Deep desalting of the oil coming from fields (up to 3÷5 mg/dm3 of salts) to Refinery, particularly, is achieved only with application of electrical dehydrators.

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