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Some embodiments of a supply tube system for use in a wellbore may have multiple tubes, a number of which can be readily coupled to a downhole steam generator or other heated-fluid generator device. In certain embodiments, the system may include a connector that simplifies the process of coupling th

Some embodiments of a supply tube system for use in a wellbore may have multiple tubes, a number of which can be readily coupled to a downhole steam generator or other heated-fluid generator device. In certain embodiments, the system may include a connector that simplifies the process of coupling the supply tube system to the steam generator and provides for fluid communication between each supply conduit and the associated input port of the steam generator.

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What is claimed is: 1. A method, comprising: lowering a heated-fluid generator device into a wellbore while the heated-fluid generator device is coupled to a first tube, wherein the heated-fluid generator device comprises a steam generator to output steam to a region proximal to the wellbore; and c

What is claimed is: 1. A method, comprising: lowering a heated-fluid generator device into a wellbore while the heated-fluid generator device is coupled to a first tube, wherein the heated-fluid generator device comprises a steam generator to output steam to a region proximal to the wellbore; and coupling a second tube to the heated-fluid generator, at least one of the first tube and the second tube comprising a coiled tubing uncoiled from a spool and inserted into the wellbore, wherein at least one of the first tube and the second tube at least partially defines an annular conduit to deliver water to a water input port of the steam generator. 2. The method of claim 1, wherein the first tube supports at least a portion of a weight of the heated-fluid generator device while lowering the heated-fluid generator device into the wellbore. 3. The method of claim 1, wherein one of the first and second tubes is disposed inside of the other tube to define a first fluid conduit inside of a second fluid conduit. 4. The method of claim 1, further comprising coupling the first tube to the heated-fluid generator device using a connector, wherein one of the connector and the second tube comprises a stab portion and the other comprises a receptacle adapted to sealingly receive the stab portion and couple second tube with the connector after the heated-fluid generator device is lowered into the wellbore. 5. The method of claim 4, wherein the connector comprises a first port in communication with the first fluid conduit and the heated-fluid generator device and comprises a second port in communication with the second conduit and the heated-fluid generator device. 6. The method claim 1, wherein the first tube and the second tube are received within a casing and the casing, the first tube, and the second tube at least partially define at least three substantially nested conduits. 7. The method of claim 6, further comprising receiving a fuel through the first conduit to the heated-fluid generator device, receiving an oxygen-containing fluid through the second conduit to the heated-fluid generator device, and receiving water through a third conduit. 8. The method of claim 1, further comprising delivering water, an oxygen-containing fluid, and a fuel at the heated-fluid generator device so as to apply a heated fluid to a hydrocarbon formation disposed proximal to the wellbore. 9. The method of claim 1, wherein at least one of the first tube and the second tube is continuous between the heated-fluid generator and a ground surface. 10. A method, comprising: lowering a heated-fluid generator device into a wellbore while the heated-fluid generator device is coupled to a first tube, the first tube being uncoiled from a spool as the heated-fluid generator device is lowered into the wellbore, wherein the heated-fluid generator device comprises a steam generator to output steam to a region proximal to the wellbore; securing the heated-fluid generator device in a polished bore receptacle so as to form a seal therebetween, wherein an output port of the steam generator is arranged below the seal; and coupling a second tube to the heated-fluid generator, one of the first and second tubes nested within the other to define at least a portion of at least two fluid conduits. 11. The method of claim 10, wherein the first tube supports at least a portion of a weight of the heated-fluid generator device while it is being lowered into the wellbore. 12. The method of claim 10, wherein the first tube and the second tube define at least a portion of at least three fluid conduits. 13. The method of claim 10, wherein the first tube is substantially continuous between the heated-fluid generator device and a ground surface. 14. The method of claim 10, wherein lowering the heated-fluid generator device into a wellbore further comprises receiving the heated-fluid generator device at a liner hanger having the polished bore receptacle. 15. A system for generating heated fluid in a wellbore, comprising: a heated-fluid generator device disposed in a wellbore and adapted to output a heated fluid, wherein the heated-fluid generator device comprises a steam generator; and a first and second tubes residing in the wellbore and coupled to the heated-fluid generator, the first tube at least partially defining a first conduit and the second tube at least partially defining a second conduit, both the first and second conduits being in fluid communication with the heated-fluid generator device, wherein at least one of the first and second tubes comprises a coiled tubing that is uncoiled from a spool when arranged in the wellbore; and a wellbore casing disposed in the wellbore, the wellbore casing surrounding at least a portion of the second tube to define a third conduit between the casing and the second tube, the third conduit adapted to communicate a fluid into an input of the heated-fluid generator device. 16. The system of claim 15, wherein the first tube resides within the second tube so as to define a inner fluid conduit disposed within an intermediate fluid conduit. 17. The system of claim 15, wherein at least one of the first and second tubes is substantially continuous between the heated-fluid generator and a ground surface. 18. The system of claim 15, further comprising: a hanger device adapted to grip a wall of the wellbore and adapted to receive and support the heated-fluid generator device in the wellbore; and a connector adapted to couple at least one of the first and second tubes to the heated-fluid generator device and adapted to substantially seal against the hanger device. 19. A method, comprising: lowering a heated-fluid generator device into a wellbore while the heated-fluid generator device is coupled to a first tube; and coupling a second tube to the heated-fluid generator, at least one of the first tube and the second tube comprising a coiled tubing uncoiled from a spool and inserted into the wellbore, wherein the first tube is coupled to the heated-fluid generator device using a connector, and one of the connector and the second tube comprises a stab portion and the other comprises a receptacle adapted to sealingly receive the stab portion and couple second tube with the connector after the heated-fluid generator device is lowered into the wellbore. 20. The method of claim 19, wherein the first tube supports at least a portion of a weight of the heated-fluid generator device while lowering the heated-fluid generator device into the wellbore. 21. The method of claim 19, wherein one of the first and second tubes is disposed inside of the other tube to define a first fluid conduit inside of a second fluid conduit. 22. The method of claim 19, wherein the connector comprises a first port in communication with the first fluid conduit and the heated-fluid generator device and comprises a second port in communication with the second conduit and the heated-fluid generator device. 23. The method claim 19, wherein the first tube and the second tube are received within a casing and the casing, the first tube, and the second tube at least partially define at least three substantially nested conduits. 24. The method of claim 23, further comprising receiving a fuel through the first conduit to the heated-fluid generator device, receiving an oxygen-containing fluid through the second conduit to the heated-fluid generator device, and receiving water through a third conduit. 25. The method of claim 19, wherein the heated-fluid generator device comprises a steam generator, the method further comprising delivering water, an oxygen-containing fluid, and a fuel to the heated-fluid generator device so as to apply a heated fluid to a hydrocarbon formation disposed proximal to the wellbore. 26. The method of claim 19, wherein at least one of the first tube and the second tube is continuous between the heated-fluid generator and a ground surface. 27. The method of claim 19, wherein lowering the heated-fluid generator device into a wellbore further comprises receiving the heated-fluid generator device at a liner hanger. 28. The method of claim 27, wherein receiving the heated-fluid generator device at the liner hanger further comprises sealingly coupling the heated-fluid generator device to a polished bore receptacle of the liner hanger. 29. A method, comprising: lowering a heated-fluid generator device into a wellbore while the heated-fluid generator device is coupled to a first tube, wherein lowering the heated-fluid generator device into a wellbore further comprises receiving the heated-fluid generator device at a liner hanger; and coupling a second tube to the heated-fluid generator, at least one of the first tube and the second tube comprising a coiled tubing uncoiled from a spool and inserted into the wellbore. 30. The method of claim 29, wherein the first tube supports at least a portion of a weight of the heated-fluid generator device while lowering the heated-fluid generator device into the wellbore. 31. The method of claim 29, wherein one of the first and second tubes is disposed inside of the other tube to define a first fluid conduit inside of a second fluid conduit. 32. The method of claim 29, further comprising coupling the first tube to the heated-fluid generator device using a connector, wherein one of the connector and the second tube comprises a stab portion and the other comprises a receptacle adapted to sealingly receive the stab portion and couple second tube with the connector after the heated-fluid generator device is lowered into the wellbore. 33. The method of claim 32, wherein the connector comprises a first port in communication with the first fluid conduit and the heated-fluid generator device and comprises a second port in communication with the second conduit and the heated-fluid generator device. 34. The method claim 29, wherein the first tube and the second tube are received within a casing and the casing, the first tube, and the second tube at least partially define at least three substantially nested conduits. 35. The method of claim 34, further comprising receiving a fuel through the first conduit to the heated-fluid generator device, receiving an oxygen-containing fluid through the second conduit to the heated-fluid generator device, and receiving water through a third conduit. 36. The method of claim 29, wherein the heated-fluid generator device comprises a steam generator, the method further comprising delivering water, an oxygen-containing fluid, and a fuel to the heated-fluid generator device so as to apply a heated fluid to a hydrocarbon formation disposed proximal to the wellbore. 37. The method of claim 29, wherein at least one of the first tube and the second tube is continuous between the heated-fluid generator and a ground surface. 38. The method of claim 29, wherein receiving the heated-fluid generator device at the liner hanger further comprises sealingly coupling the heated-fluid generator device to a polished bore receptacle of the liner hanger. 39. A method, comprising: lowering a heated-fluid generator device into a wellbore while the heated-fluid generator device is coupled to a first tube, the first tube being uncoiled from a spool as the heated-fluid generator device is lowered into the wellbore, wherein lowering the heated-fluid generator device into a wellbore further comprises receiving the heated-fluid generator device at a liner hanger; and coupling a second tube to the heated-fluid generator, one of the first and second tubes nested within the other to define at least a portion of at least two fluid conduits. 40. The method of claim 39, wherein the first tube supports at least a portion of a weight of the heated-fluid generator device while it is being lowered into the wellbore. 41. The method of claim 39, wherein the first tube and the second tube define at least a portion of at least three fluid conduits. 42. The method of claim 39, wherein the first tube is substantially continuous between the heated-fluid generator device and a ground surface. 43. The method of claim 39, wherein receiving the heated-fluid generator device at the liner hanger further comprises sealingly coupling the heated-fluid generator device to a polished bore receptacle of the liner hanger. 44. A system for generating heated fluid in a wellbore, comprising: a heated-fluid generator device disposed in a wellbore and adapted to output a heated fluid; a first and second tubes residing in the wellbore and coupled to the heated-fluid generator, the first tube at least partially defining a first conduit and the second tube at least partially defining a second conduit, both the first and second conduits being in fluid communication with the heated-fluid generator device, wherein at least one of the first and second tubes comprises a coiled tubing that is uncoiled from a spool when arranged in the wellbore; a hanger device adapted to grip a wall of the wellbore and adapted to receive and support the heated-fluid generator device in the wellbore; and a connector adapted to couple at least one of the first and second tubes to the heated-fluid generator device and adapted to substantially seal against the hanger device. 45. The system of claim 44, wherein the first tube resides within the second tube so as to define a inner fluid conduit disposed within an intermediate fluid conduit. 46. The system of claim 45, further comprising a wellbore casing disposed in the wellbore, the wellbore casing surrounding at least a portion of the second tube to define a fluid conduit between the casing and the second tube. 47. The system of claim 44, wherein at least one of the first and second tubes is substantially continuous between the heated-fluid generator and a ground surface. 48. The system of claim 44, wherein the heated-fluid generator device comprises a steam generator.