Downhole electric steam or hot water generator for oil wells

Electric heating – Heating devices – Resistive element: igniter type

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Details

166 61, 166303, 219284, 219288, 219289, 219291, 219293, E21B 4324, F22B 130, H05B 360, F24H 110

Patent

active

047835850

ABSTRACT:
A downhole heating generator for producing steam or hot water in oil wells to aid in the recovery of oil includes an elongated cylindrical housing suspended by a cable within the tube string of an oil well bore at the level of a geological formation to be heated. The housing has a closed bottom forming a container continously receiving water through a hose from a ground level source and contains a pair of electrode rods, preferably of carbon, mounted in end-to-end spaced aligned relationship and immersed at least partially in the water received in the housing for boiling the water and/or generating steam. The electrodes are connected to a ground level electrical transformer and are arranged to be capable of being energized at at least 2300 volts without arcing therebetween. The steam or hot water is discharged from the housing through an upper exit opening and is directed through openings in the tube string to the geological formation to be heated. A plurality of generators may be suspended in tandem in the tube string.

REFERENCES:
patent: 731339 (1903-06-01), Chapman
patent: 1169261 (1916-01-01), Huff
patent: 1436089 (1922-11-01), Gorlov
patent: 1474638 (1923-11-01), Martin
patent: 1661971 (1928-03-01), Seymour
patent: 2076669 (1937-04-01), Redfield et al.
patent: 2350429 (1944-06-01), Troupe
patent: 3371713 (1968-03-01), Silverman
patent: 3420301 (1969-01-01), Riley et al.
patent: 4378846 (1983-04-01), Brock

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