Dewaxing valve for use in oil wells

Details Dewaxing valve for use in oil wells Dewaxing valve for use in oil wells

1979-09-13

1980-09-30

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

Fluid operated

166304, 137509, E21B 3410, E21B 3706

Patent

active

042249937

ABSTRACT:
The dewaxing valve comprises a ball and valve seat where the ball is on the upstream side of the flow of hot dewaxing fluid through a production pipe string to the well annulus. The design of the dewaxing valve is such that it can be readily attached to a production tube in the production tubing string by simply boring a hole in the side of the production tube and welding a supporting T-collar for the valve to the periphery of the side opening.

REFERENCES:
patent: 3085629 (1963-04-01), Henderson
patent: 3102590 (1963-09-01), Grounds
patent: 3236256 (1966-02-01), Valentine
patent: 3361205 (1968-01-01), Waldron
patent: 3580333 (1971-05-01), Douglas
patent: 3583440 (1971-06-01), Anderson
patent: 4049057 (1977-09-01), Hewes
patent: 4059157 (1977-11-01), Crowe
patent: 4063594 (1977-12-01), Canterbury

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