Systems for producing bitumen from tar sands

Details Systems for producing bitumen from tar sands Systems for producing bitumen from tar sands

1977-10-14

1978-09-19

Novosad, Stephen J.

Wells

Means for forming filter beds

166 57, 166303, 166276, 166222, E21B 4304, E21B 4308, E21B 4324

Patent

active

041146875

ABSTRACT:
A system for producing bitumen from unconsolidated tar sands in an open well includes a screen positioned in the well large enough to pass a majority of the formation sand and small enough to retain a gravel packing material, a pair of high pressure fluid lateral nozzles fracturably fastened in the bottom of the screen, a wash pipe extending down into the screen for detachably connecting to the nozzles and for washing out a cavity in the tar sand formation, a ball weight for dropping down the wash pipe for knocking the nozzles out of the bottom of the screen for allowing a consolidated gravel pack material to emerge from the screen bottom and form the gravel pack on the screen, and the wash pipe being replaceable with a production tube packed off at the screen mid point for allowing hot aqueous fluids to flow from a screen annulus formed between the production tube and the screen into the cavity for producing oil.

REFERENCES:
patent: 2349062 (1944-05-01), Uren
patent: 2720381 (1955-10-01), Quick
patent: 2745647 (1956-05-01), Gilmore
patent: 2881838 (1959-04-01), Morse et al.
patent: 2906338 (1959-09-01), Shook
patent: 2941594 (1960-06-01), Ladd et al.
patent: 2978024 (1961-04-01), Davis
patent: 3393736 (1968-07-01), Goodwin
patent: 3858654 (1975-01-01), Walker
patent: 3913671 (1975-10-01), Redford et al.
patent: 3951457 (1976-04-01), Redford

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