Dual field electric treater
AssigneeMaloney-Crawford Tank Corporation
InventorRobert A. Hodgson
Life of this patent
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Abstract
An electric treater for separation of a water-in-oil emulsion, which utilizes both AC potential applied to electrodes as well as DC potentials. A plurality of trays are provided through which the emulsion passes in series. One or more of these trays is supplied with AC potential to a series of insulated electrodes. Another tray is provided with a DC potential obtained from one half of a secondary winding of a transformer, through a rectifier, and at least a third tray is provided with a second DC potential derived from the opposite end of the secondary winding through a separate rectifier. The oil to be treated first passes through the tray or trays which have the AC potential, and then passes successively through the two trays which have the pulsed DC potential.
Claims7
In an oil field electrical emulsion treater having a plurality of trays through which the emulsion is passed sequentially, the improvement comprising:
- a. at least one first tray means comprising at least one insulatively mounted electrode therein, and means to apply an AC potential between said electrode and the walls of said first tray;
- b. at least one additional pair of trays, each pair comprising a second tray and a third tray, at least one insulatively mounted electrode in each of said second and third trays, and means to apply unidirectional pulsed half wave rectified potential between said electrodes in said second and third trays and the walls of each respective tray, the half waves in said second tray being out of phase by 180.degree. with the half waves in said third tray.
Dependencies are inferred from the claim text.