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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0409504 (2006-04-21) |
등록번호 | US-7435037 (2008-10-14) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 151 인용 특허 : 488 |
A system for reducing heat load applied to a frozen barrier by a heated formation is described. The system includes heat interceptor wells positioned between the heated formation and the frozen barrier. Fluid is positioned in the heat interceptor wells. Heat transfers from the formation to the flui
A system for reducing heat load applied to a frozen barrier by a heated formation is described. The system includes heat interceptor wells positioned between the heated formation and the frozen barrier. Fluid is positioned in the heat interceptor wells. Heat transfers from the formation to the fluid to reduce the heat load applied to the frozen barrier.
What is claimed is: 1. A system for reducing heat load applied to a frozen barrier by a heated formation, comprising: a plurality of wells in the formation, the plurality of wells configured to heat a treatment area of the formation to form the heated formation; one or more barriers at least partia
What is claimed is: 1. A system for reducing heat load applied to a frozen barrier by a heated formation, comprising: a plurality of wells in the formation, the plurality of wells configured to heat a treatment area of the formation to form the heated formation; one or more barriers at least partially surrounding the treatment area configured to inhibit fluid flow into the treatment area, wherein a first barrier closest to the treatment area comprises a plurality of freeze wells, and wherein the plurality of freeze wells form the frozen barrier; heat interceptor wells positioned between the heated formation and the frozen barrier; and fluid positioned in the heat interceptor wells, wherein heat transfers from the heated formation to the fluid to reduce the heat load applied to the frozen barrier from the heated formation. 2. The system of claim 1, wherein at least one heat interceptor well comprises a heat pipe configured so that heat from the formation vaporizes liquid in the heat interceptor well proximate to a heated section of the formation. 3. The system of claim 2, wherein produced vapor rises in the heat interceptor well, wherein the vapor condenses to liquid in the heat interceptor well, and wherein the liquid falls by gravity to an area adjacent to the heated section of the formation. 4. The system of claim 1, wherein the fluid is configured to be introduced and removed from one or more of the heat interceptor wells. 5. The system of claim 1, wherein the fluid comprises water configured to be introduced and removed from one or more of the heat interceptor wells. 6. The system of claim 1, wherein the fluid is circulated through at least two heat interceptor wells. 7. The system of claim 1, wherein the fluid comprises aqua ammonia. 8. A method of reducing heat load applied to freeze wells in a subsurface formation, comprising: heating a treatment area of a formation to form a heated formation, wherein the treatment area is surrounded by one or more barriers, and wherein at least a portion of a first barrier closest to the treatment area comprises a plurality of freeze wells for forming a low temperature barrier; circulating a heat transfer fluid in wellbores, wherein the wellbores are positioned between the heated portion of the formation and the freeze wells; transferring heat to the heat transfer fluid; and removing heat from the heat transfer fluid to reduce the heat load applied to the freeze wells from the heated portion of the formation. 9. The method of claim 8, wherein the heat transfer fluid comprises water, and wherein circulating the heat transfer fluid comprises pumping the heat transfer fluid through a circulation system coupled to one or more of the wellbores. 10. The method of claim 8, wherein circulating the heat transfer fluid comprises evaporating liquid heat transfer fluid in a section of the wellbore adjacent to the heated portion of the formation to form vapor, condensing at least a portion of the vapor in an overburden to form liquid heat transfer fluid, and wherein the liquid heat transfer fluid in the overburden falls by gravity to the section of the wellbore adjacent to the heated portion. 11. The method of claim 8, wherein the heat transfer fluid comprises aqueous ammonia. 12. The method of claim 8, further comprising providing heat from one or more heaters to the heated portion of the formation. 13. The method of claim 8, further comprising providing heat from one or more heaters to the heated portion of the formation such that at least a portion of the heated portion is at or above a pyrolysis temperature. 14. The method of claim 8, further comprising producing formation fluid from the subsurface formation, wherein the formation fluid comprises hydrocarbons. 15. The method of claim 8, further comprising producing transportation fuel from at least a portion of the hydrocarbons. 16. The method of claim 8, further comprising storing at least a part of the heat transfer fluid in a storage tank prior to circulating the heat transfer fluid. 17. The method of claim 8, further comprising storing at least a part of the heat transfer fluid in a storage tank after circulating the heat transfer fluid. 18. A composition comprising hydrocarbons, wherein the hydrocarbons are produced from a subsurface formation surrounded in part by a frozen barrier system, the frozen barrier system comprising: heat interceptor wells positioned between a heated treatment area and freeze wells configured to establish a low temperature barrier, wherein the freeze wells comprise at least a portion of one or more barriers at least partially surrounding the heated treatment area, wherein the freeze wells form at least a portion of a first barrier closest to the heated treatment area; and fluid positioned in the heat interceptor wells, wherein heat transfers from the formation to the fluid to reduce the heat load applied to the frozen barrier. 19. A system for reducing heat load applied to a frozen barrier by a heated formation, comprising: heat interceptor wells positioned between the heated formation and the frozen barrier; fluid positioned in the heat interceptor wells, wherein heat transfers from the formation to the fluid to reduce the heat load applied to the frozen barrier; wherein at least one heat interceptor well comprises a heat pipe configured so that heat from the heated formation vaporizes liquid in the heat interceptor well proximate to a heated section of the formation; and wherein the vaporized liquid rises in the heat interceptor well, condenses to liquid in the heat interceptor well and falls by gravity to an area adjacent to the heated section of the formation. 20. The system of claim 19, wherein the fluid comprises water. 21. The system of claim 19, wherein the fluid comprises aqueous ammonia. 22. The system of claim 19, wherein at least two heat interceptor wells are coupled together and wherein fluid is circulated through the at least two heat interceptor wells. 23. The system of claim 19, wherein the frozen barrier is produced by freeze wells, and wherein the freeze wells form a double barrier system around the treatment area. 24. The system of claim 19, further comprising a plurality of heater wells in a treatment area in the formation to produce the heated formation. 25. The system of claim 19, further comprising a plurality of production wells in a treatment area of the formation to remove formation fluid from the treatment area. 26. A method of reducing heat load applied to freeze wells in a subsurface formation, comprising: circulating a heat transfer fluid in wellbores, wherein the wellbores are positioned between a heated portion of the formation and the freeze wells; transferring heat to the heat transfer fluid; removing heat from the heat transfer fluid; and wherein circulating the heat transfer fluid in at least one of the wellbores comprises: evaporating liquid heat transfer fluid in a section of the wellbore adjacent to the heated portion of the formation to form vapor; condensing at least a portion of the vapor in an overburden to form liquid heat transfer fluid; and allowing the liquid heat transfer fluid in the overburden to fall by gravity to the section of the wellbore adjacent to the heated portion. 27. The method of claim 26, wherein the heat transfer fluid comprises water. 28. The method of claim 26, wherein the heat transfer fluid comprises aqua ammonia. 29. The method of claim 26, further comprising providing heat from one or more heaters to the heated portion of the formation. 30. The method of claim 26, further comprising providing heat from one or more heaters to the heated portion of the formation such that at least a portion of the heated portion is at or above a pyrolysis temperature of hydrocarbons in the formation. 31. The method of claim 26, further comprising producing formation fluid from the subsurface formation, wherein the formation fluid comprises hydrocarbons. 32. The method of claim 26, further comprising producing transportation fuel from at least a portion of the hydrocarbons. 33. The method of claim 26, wherein the freeze wells are a portion of a double barrier containment system.
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