Apparatus and methods for hydrocarbon recovery
Apparatus and methodologies of mining hydrocarbons from a target area within a subterranean formation, wherein a first phase involves providing at least one production well having at least one mechanical excavator rotatably disposed therein and rotating the mechanical excavator to convey the mined hydrocarbons from the formation to the surface, and a second phase involves, as the hydrocarbons being mined are depleted, withdrawing the mechanical excavator away from the formation, such that additional hydrocarbons are mined.
1. A method of recovering hydrocarbons from a target area within a subterranean formation, the method comprising:
providing at least one production well in the formation at or near the target area;
providing at least one mechanical excavator rotatably disposed within the production well, the mechanical excavator having a first input end and a second discharge end;
permitting the hydrocarbons at the target area to be received within the first input end of the mechanical excavator; and
rotating the at least one mechanical excavator to convey the recovered hydrocarbons received within the first input end of the mechanical excavator from the first input end to the second discharge end for recovery;
wherein, as the hydrocarbons being recovered at the target area are depleted, the method further comprises withdrawing the at least one mechanical excavator away from the target area for permitting additional hydrocarbons to be received within the first input end of the mechanical excavator.
2. The method of claim 1 , wherein the method may further comprise providing at least one injection well for injecting pressurized fluids into an injection area in the formation.
3. The method of claim 2 , wherein the at least one injection well is positioned for the injection area to be offset from the target area.
4. The method of claim 2 , wherein the at least one injection well is positioned at a sufficient distance from the at least one production well to form a formation barrier therebetween.
5. The method of claim 2 , wherein the at least one injection well is positioned at a sufficient distance from the at least one production well to form at least one formation pillar therebetween.
6. The method of claim 5 , wherein, as the hydrocarbons being recovered at the target area are depleted, the target area forms at least one void adjacent the at least one pillar.
7. The method of claim 6 , wherein the method may further comprise injecting the pressurized fluids via the at least one injection well into the at least one void.
8. The method of claim 2 , wherein the injection of the pressurized fluids may be continuous or intermittent with the recovery of hydrocarbons.
9. The method of claim 1 , wherein the target area is at a depth between 50 meters and 200 meters below the surface.
10. The method of claim 1 , wherein the recovery of the hydrocarbons by the mechanical excavator is gravity-driven.
11. The method of claim 1 , wherein the at least one mechanical excavator comprises at least one auger conveyor.
12. The method of claim 11 , wherein the at least one auger conveyor may comprise a plurality of augers operably connected end to end to receive the recovered hydrocarbons from the target area and to convey the recovered hydrocarbons to the surface.
13. The method of claim 1 , wherein the method further comprises transporting the recovered hydrocarbons to at least one hydrocarbon processing facility.
14. The method of claim 1 , wherein the hydrocarbons are oil sands.
15. A method of mining hydrocarbons from a target area within a subterranean formation, the method comprising a first phase of:
providing at least one production well in the formation at or near the target area;
providing at least one mechanical excavator rotatably disposed within the production well, the mechanical excavator having a first input end and a second discharge end;
permitting the hydrocarbons at the target area to be received within the first input end of the mechanical excavator; and
rotating the at least one mechanical excavator to convey the mined hydrocarbons received within the first input end of the mechanical excavator from the first input end to the second discharge end;
wherein, as the hydrocarbons being mined from the target area are depleted, the method further comprises:
withdrawing the at least one mechanical excavator away from the target area for permitting additional hydrocarbons to be mined within the first input end of the mechanical excavator.
16. The method of claim 15 , wherein the method further comprises providing at least one injection well for injecting pressurized fluids into an injection area in the formation.
17. The method of claim 16 , wherein the at least one injection well is positioned for the injection area to be offset from the target area.
18. The method of claim 16 , wherein the at least one injection well is positioned at a sufficient distance from the at least one production well to form a formation barrier therebetween.
19. The method of claim 15 , wherein the method further comprises transporting the recovered hydrocarbons to at least one hydrocarbon processing facility.