Iterated electrodes for oil wells

Details Iterated electrodes for oil wells Iterated electrodes for oil wells

1996-02-13

1998-07-21

Nguyen, Matthew V.

Electric resistance heating devices

Heating devices

Borehole type

166 60, E21B 715, E21B 3600

Patent

active

057845301

ABSTRACT:
An electrical heating system for enhancing production from an oil well, particularly an oil well of the kind commonly known as a horizontal well, the well including an initial well bore extending downwardly from the surface of the earth through one or more overburden formations and communicating with a producing well bore extending from the initial well bore into at least one oil producing formation. The producing well bore may or may not be truly horizontal The heating system includes an electrode array comprising a plurality of at least three tubular, electrically conductive heating electrodes extending through the producing well bore. Each electrode has a given length, usually two to three meters, and a smaller diameter D. The sum of the electrode lengths is substantially less than the length of the producing well bore. The electrodes are spaced from each other by isolation sections; the length of an isolation section is much greater than the electrode diameter D. The heating system further includes an electrical power delivery apparatus for energizing the electrodes with A.C. power, but with a phase displacement of at least 90.degree..

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patent: 5070533 (1991-12-01), Bridges et al.
patent: 5621844 (1997-04-01), Bridges
patent: 5623576 (1997-04-01), Deans
Fields and Waves in Communications and Electronics, pp. 44-47, Ramo et al, 1965, J. Wiley and Sons, New York (p. 18).
Reference Data for Radio Engineers, pp. 22-23, H. Sames, ITT, 1968, New York (pp. 18, 19).

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