Method for increasing the recovery of hydrocarbons
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-043/24
E21B-043/12
출원번호
US-0112487
(2008-04-30)
등록번호
US-8091636
(2012-01-10)
발명자
/ 주소
Kuhlman, Myron I.
출원인 / 주소
World Energy Systems Incorporated
대리인 / 주소
Patterson & Sheridan, LLP
인용정보
피인용 횟수 :
6인용 특허 :
27
초록▼
Methods for increasing the recovery of hydrocarbons from a subterranean reservoir. A method may include the steps of injecting a first fluid into a first horizontal well in the reservoir by a first device; producing hydrocarbons from a second horizontal well disposed below the first well; injecting
Methods for increasing the recovery of hydrocarbons from a subterranean reservoir. A method may include the steps of injecting a first fluid into a first horizontal well in the reservoir by a first device; producing hydrocarbons from a second horizontal well disposed below the first well; injecting a second fluid into a third well laterally offset from each of the first and second wells while continuing to produce hydrocarbons from the second well; and selectively ceasing injection into the first well when the second well is in fluid communication with the third well. The first and second fluid may comprise steam, carbon dioxide, oxygen, or combinations thereof. Injection into the first well selectively may be ceased when pressure in the first well is increased to a first injection pressure.
대표청구항▼
1. A method for increasing the recovery of hydrocarbons from a subterranean reservoir, comprising: injecting a first fluid into a first horizontal well in the reservoir at an initial injection pressure, wherein the first fluid is injected into the first well by a first device;producing hydrocarbons
1. A method for increasing the recovery of hydrocarbons from a subterranean reservoir, comprising: injecting a first fluid into a first horizontal well in the reservoir at an initial injection pressure, wherein the first fluid is injected into the first well by a first device;producing hydrocarbons from a second horizontal well disposed below the first well;continuously injecting a second fluid into a third well laterally offset from each of the first and second wells to drive fluids in the reservoir toward the second well until fluid communication is established with the second well, while continuing to produce hydrocarbons from the second well; andselectively ceasing injection into the first well when the second well is in fluid communication with the third well. 2. The method of claim 1, wherein the first device is a downhole steam generator. 3. The method of claim 1, wherein the first fluid comprises steam. 4. The method of claim 3, wherein the first fluid further comprises carbon dioxide and oxygen. 5. The method of claim 1, wherein the second fluid comprises steam. 6. The method of claim 5, wherein the second fluid further comprises carbon dioxide and oxygen. 7. The method of claim 1, wherein the second fluid is injected into the third well by a second device. 8. The method of claim 1, further comprising generating carbon dioxide in the third well with a second device. 9. The method of claim 8, wherein the second device is a downhole steam generator. 10. The method of claim 1, further comprising recycling carbon dioxide generated in the reservoir and at all wells. 11. The method of claim 1, further comprising shutting in the first well when pressure in the first well reaches at least the initial injection pressure into the first well. 12. The method of claim 1, further comprising increasing pressure in the first well when the second well is in fluid communication with the third well. 13. The method of claim 1, wherein the reservoir is disposed beneath a region comprising a layer of permafrost. 14. The method of claim 1, further comprising: injecting a third fluid into a fourth horizontal well in the reservoir;producing hydrocarbons from a fifth horizontal well disposed below the fourth well; andselectively ceasing injection into the fourth well when the fifth well is in fluid communication with the third well. 15. The method of claim 14, wherein the third well is laterally offset from the fourth well and the fifth well. 16. The method of claim 14, wherein the third well is disposed between the first well and the fourth well. 17. The method of claim 1, wherein at least one of the first fluid and the second fluid comprises steam to heat the hydrocarbons disposed in the reservoir and oxygen to combust with the heated hydrocarbons. 18. The method of claim 17, wherein combustion of the oxygen and the heated hydrocarbons generates heat and steam in the reservoir. 19. The method of claim 1, wherein at least one of the first fluid and the second fluid comprises a gas. 20. The method of claim 1, further comprising at least one of continuing to produce hydrocarbons from the second well after ceasing injection into the first well and continuing to inject the second fluid into the third well after ceasing injection into the first well. 21. The method of claim 1, further comprising increasing the pressure in the first well to at least the initial injection pressure using an injection pressure from the third well. 22. A method for increasing the recovery of hydrocarbons from a subterranean reservoir, comprising: injecting steam into a first horizontal well in the reservoir at an initial injection pressure;producing hydrocarbons from a second horizontal well disposed below the first well;injecting steam, carbon dioxide, and oxygen into a third well laterally offset from each of the first and second wells while continuing to produce hydrocarbons from the second well; andselectively ceasing injection into the first well when the second well is in fluid communication with the third well by shutting in the first well when pressure in the first well reaches at least the initial injection pressure. 23. The method of claim 22, wherein the carbon dioxide dilutes the hydrocarbons in the reservoir before the hydrocarbons are heated by the steam. 24. The method of claim 22, wherein the steam is injected into the first well by a first device. 25. The method of claim 24, wherein the first device is a downhole steam generator. 26. The method of claim 22, wherein the steam, carbon dioxide, and oxygen are injected into the third well by a second device. 27. The method of claim 22, wherein the second device is a downhole steam generator. 28. The method of claim 22, further comprising injecting at least one of carbon dioxide and oxygen while injecting steam into the first well. 29. The method of claim 22, wherein at least one of carbon dioxide and steam is generated downhole in the third well and in the reservoir by combustion of oil with the oxygen. 30. The method of claim 22, wherein shutting in the first well when pressure in the first well reaches the initial injection pressure into the first well comprises shutting in the first well when pressure in the first well increases above the initial injection pressure into the first well. 31. The method of claim 22, further comprising at least one of continuing to produce hydrocarbons from the second well after ceasing injection into the first well and continuing to inject at least one of steam, carbon dioxide, and oxygen into the third well after ceasing injection into the first well. 32. The method of claim 22, further comprising increasing the pressure in the first well to at least the initial injection pressure using an injection pressure from the third well. 33. A method for increasing the recovery of hydrocarbons from a subterranean reservoir, comprising: injecting a first fluid into a first well in the reservoir at a first injection pressure;producing hydrocarbons from a second well disposed below the first well at a first production pressure, wherein the first injection pressure is greater than the first production pressure;injecting a second fluid into a third well at a second injection pressure, wherein the second injection pressure is greater than the first injection pressure;increasing bottom-hole pressure in the first well when the second well is in fluid communication with the third well; andselectively ceasing injection into the first well when the bottom-hole pressure in the first well is increased to at least the first injection pressure after the second well is in fluid communication with the third well. 34. The method of claim 33, wherein selectively ceasing injection into the first well when the bottom-hole pressure in the first well is increased to at least the first injection pressure comprises shutting in the first well when pressure in the first well increases above the first injection pressure. 35. The method of claim 33, further comprising at least one of continuing to produce hydrocarbons from the second well after ceasing injection into the first well and continuing to inject the second fluid into the third well after ceasing injection into the first well. 36. The method of claim 33, further comprising increasing the pressure in the first well to at least the initial injection pressure using an injection pressure from the third well. 37. A method for increasing the recovery of hydrocarbons from a subterranean reservoir, comprising: conducting a SAGD operation comprising injecting steam into the reservoir using a first downhole device located in an injection well, and producing fluids from the reservoir through a production well that is disposed below the injection well;conducting a Drive operation comprising injecting fluid into the reservoir using a second downhole device located in a drive well that is laterally spaced from the injection and production wells to move fluids in the reservoir toward the production well until fluid communication is established between the drive well and the production well; andceasing steam injection into the reservoir through the injection well when fluid communication is established between the drive well and the production well, while continuing to inject fluid into the reservoir through the drive well and continuing to produce fluids from the reservoir through the production well.
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이 특허에 인용된 특허 (27)
Wadleigh Eugene E. (Midland TX) Compton Albert C. (Midland TX) Ellwood David E. (Midland TX), Apparatus and method for generating inert gas and heating injected gas.
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Redford David A. (Fort Saskatchewan CAX) Hanna Mohsen R. (Calgary both of CAX), Gaseous and solvent additives for steam injection for thermal recovery of bitumen from tar sands.
Vinegar Harold J. (Houston TX) Mikus Thomas (Houston TX) Glandt Carlos A. (Houston TX) Karanikas John M. (Houston TX) De Rouffignac Eric P. (Houston TX), Heat injection process and apparatus.
Vinegar,Harold J.; de Rouffignac,Eric Pierre; Wellington,Scott Lee; Van Hardeveld,Robert Martijn, In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor.
Ware, Charles H.; Kuhlman, Myron I.; Schneider, Marvin J.; Hein, Jr., Norman W.; Castrogiovanni, Anthony Gus; Harrison, Allen R., Apparatus and methods for recovery of hydrocarbons.
Castrogiovanni, Anthony Gus; Harrison, Allen R.; Hein, Jr., Norman W.; Schneider, Marvin J., System and methods for steam generation and recovery of hydrocarbons.
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