Hydraulic mining technique for recovering bitumen from tar sand

Details Hydraulic mining technique for recovering bitumen from tar sand Hydraulic mining technique for recovering bitumen from tar sand

1978-06-30

1980-07-15

Novosad, Stephen J.

Wells

Processes

Heating, cooling or insulating

166267, 166307, 299 7, 299 17, E21B 4324, E21B 4337, E21C 3706

Patent

active

042123534

ABSTRACT:
Viscous petroleum including bitumen may be recovered from unconsolidated sand formations such as tar sand deposits by hydraulic mining. Hot water of steam and an amine are introduced into the subterranean deposit with sufficient velocity to dislodge bitumen and particles of sand therefrom. The process is a single wellbore operation using rotatable vertically moveable injection string with one or more jets near the bottom thereof, with separate return flow path to surface, the inlet to which may be on the bottom of the injection string. The injection string may be raised or lowered while rotating and jetting so the full vertical thickness of tar sand interval is contacted by aqueous mining fluid. Jet pump may be used to pump petroleum to surface. The aqueous hydraulic mining fluid comprises hot water or steam and an amine having the following formula:

REFERENCES:
patent: 3050289 (1962-08-01), Gerner
patent: 3057404 (1962-10-01), Bergstrom
patent: 3221813 (1965-12-01), Closmann et al.
patent: 3483923 (1969-12-01), Darley
patent: 3515214 (1970-06-01), Finch
patent: 3581823 (1971-06-01), Feuerbacher
patent: 3858654 (1975-01-01), Walker
patent: 3951457 (1976-04-01), Redford
patent: 3957308 (1976-05-01), Lambly et al.

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