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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0103304 (1979-12-13) |
우선권정보 | DE-2615874 (1976-04-10) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 286 인용 특허 : 0 |
A method of recovering petroleum from an underground reservoir by employing an in-situ combustion at a pressure of at least 120 bar by the simultaneous injection of oxygen and water whereby the temperature is controlled in the range of 450°-550°C.
A method of recovering petroleum having a gravity in the range of 20°-45°API from an underground reservoir penetrated by at least one injection well and by at least one production well wherein the pressure in said reservoir is at least 120 bar, comprising the steps of: (a) establishing a combustion
A method of recovering petroleum having a gravity in the range of 20°-45°API from an underground reservoir penetrated by at least one injection well and by at least one production well wherein the pressure in said reservoir is at least 120 bar, comprising the steps of: (a) establishing a combustion front in said reservoir adjacent said injection well by the initiation of a partial in-situ combustion, (b) injecting via said injection well a gas comprising substantially pure oxygen and simultaneously therewith, water wherein the water-to-oxygen ratio is in the range of 6.5 to 10 thereby controlling the temperature in the range of 450°to 550°C., (c) continuing said injection to generate carbon dioxide whereby a carbon dioxide-water saturated zone and a transition zone of intermediate hydrocarbons are formed in said reservoir, (d) terminating injection of said oxygen-containing gas when the said transition zone of intermediate hydrocarbons is between 1 to 15 percent of the pore volume and continuing injection of water to displace said transition zone and said reservoir oil through said reservoir toward said production well, (e) recovering said oil via said production well.
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