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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0989257 (1992-12-11) |
우선권정보 | CA-2058255 (1991-12-20) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 338 인용 특허 : 0 |
Disclosed are a method and apparatus for recovering and/or upgrading hydrocarbons utilizing in situ combustion and horizontal wells. Vertical injection wells are utilized to inject an oxidant into a reservoir for in situ combustion, with the combustion gases vented through vertical wells offset from
Disclosed are a method and apparatus for recovering and/or upgrading hydrocarbons utilizing in situ combustion and horizontal wells. Vertical injection wells are utilized to inject an oxidant into a reservoir for in situ combustion, with the combustion gases vented through vertical wells offset from the injection wells, thus causing the combustion front to travel toward the vertical offset wells. Production of hydrocarbons is through horizontal wells positioned beneath the vertical offset wells. Upgrading occurs when the horizontal wells are shut in and hot fluids injected through the offset wells into hydrocarbons that have accumulated at the bottom of the offset wells.
A process for recovering hydrocarbons from a formation of tar sand deposits in which there is at least one horizontal production well and at least one vertical production well positioned over the horizontal well such that fluids can be circulated between the two wells, and at least one vertical inje
A process for recovering hydrocarbons from a formation of tar sand deposits in which there is at least one horizontal production well and at least one vertical production well positioned over the horizontal well such that fluids can be circulated between the two wells, and at least one vertical injection well offset from the vertical production well, said process comprising: (a) establishing communication between the vertical production and vertical injection wells by injection of a heated fluid through at least one of the vertical wells towards the other vertical well; (b) injecting an oxidant into the tar sand deposit through the injection well for in situ combustion of the tar sand deposit that either spontaneously ignites or is ignited; and (c) recovering in situ combustion gases from the vertical production well and hydrocarbons from the horizontal production well. An apparatus for recovering and upgrading hydrocarbons from tar sand deposits comprising: (a) a first vertical well positioned in the deposit comprising means for injecting an oxidant into the deposit for in situ combustion; (b) a second vertical well, offset from the first vertical well, comprising means for venting in situ combustion gases from the deposit and means for injecting an upgrading medium into the deposit; (c) a horizontal well, positioned beneath the second vertical well such that fluids can be circulated between the two wells, comprising means for producing hydrocarbons.
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