Method and system for automatically raising product from a heate

Details Method and system for automatically raising product from a heate Method and system for automatically raising product from a heate

1982-07-30

1984-07-10

Leppink, James A.

Wells

Processes

With indicating, testing, measuring or locating

166372, 166 53, 166 64, E21B 4312

Patent

active

044587546

ABSTRACT:
A method or system for raising gas and liquid from a well used in in situ heating of a formation. Such heating may be done by radio frequency having an appropriate wave length in the earth e.g. about fifteen meters. The well has a production tube suspended from the well head. And, the method steps include sweeping the annulus with dry gas to drive the products up the production tube, at low flow. Also, another step is that of measuring the pressure differential between the annulus and the outlet of the production tube. And, another step is that of increasing the flow of the dry gas whenever the pressure differential exceeds a predetermined minimum. The increased flow is continued for an interval long enough to clear the liquid product that has risen in the tube and caused the differential pressure increase.

REFERENCES:
patent: 1754945 (1930-04-01), Huskell
patent: 3191681 (1965-06-01), Hubby
patent: 3212579 (1965-10-01), Cryer
patent: 4211279 (1980-07-01), Isaacks
patent: 4352376 (1982-10-01), Norwood
patent: 4355365 (1982-10-01), McCracken

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