Method and apparatus for extracting crude oil from previously ta

Details Method and apparatus for extracting crude oil from previously ta Method and apparatus for extracting crude oil from previously ta

1979-02-28

1980-09-30

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

60 3455, 60 3958, 166 57, E21B 3602, E21B 4324

Patent

active

042249910

ABSTRACT:
A device for extracting crude oil out of an extraction bore of a previously tapped deposit, comprises, a combustion chamber having at least one reaction chamber portion and an evaporation chamber portion arranged in axial relationship with a constricted nozzle portion therebetween. Advantageously, an additional constricted nozzle portion separates a turbulence chamber from a front reaction chamber and the second constriction separates the front reaction chamber from a rear evaporation chamber. The evaporation chamber in turn feeds through a nozzle section to a narrow discharge into the extraction bore. A fuel and chemical oxygen or an oxygen carrier are directed into the combustion chamber preferably in front of the first constriction and forms high temperature combustion gases into which the water is directed in a manner to intermix the water with the combustion gases and to form superheated steam which is then discharged into the extraction bore. The steam causes the oil in the previously tapped deposit to become less viscous and to flow out of the extraction bore.

REFERENCES:
patent: 2183313 (1939-12-01), Goddard
patent: 2609658 (1952-09-01), Goddard
patent: 2734578 (1956-02-01), Walter
patent: 2770097 (1956-11-01), Walker
patent: 3595316 (1971-07-01), Myrick
patent: 3700035 (1972-10-01), Lange
patent: 3833059 (1974-09-01), Sisson
patent: 3980137 (1976-09-01), Gray
patent: 4041699 (1977-08-01), Schelp
patent: 4156421 (1979-05-01), Cradeur et al.
patent: 4159743 (1979-07-01), Rose et al.

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