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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0483172 (1974-06-26) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 291 인용 특허 : 0 |
Solid hydrocarbon materials present in subsurface earth formation such as, for example, the coke like residue remaining in a subterranean tar sand deposit which has previously been exploited by controlled oxidation depletion, is converted to a synthesis gas composition by contacting the solid hydroc
Solid hydrocarbon materials present in subsurface earth formation such as, for example, the coke like residue remaining in a subterranean tar sand deposit which has previously been exploited by controlled oxidation depletion, is converted to a synthesis gas composition by contacting the solid hydrocarbon material with an oxygen enriched gas or essentially pure oxygen and a moderating fluid such as water, steam or carbon dioxide to control the reaction temperature so as to ensure the generation of carbon monoxide and hydrogen within the formation. The oxygen and steam or carbon dioxide may be injected as a mixture or simultaneously by separate injection means, or oxygen may be injected for intervals of time interrupted by brief periods of carbon dioxide, steam or water injection. The effluent is predominantly gaseous carbon monoxide, hydrogen, and lesser amounts of carbon dioxide and methane and, occasionally liquid hydrocarbons. The mixture of carbon monoxide and hydrogen may be utilized directly as a fuel gas, or may be utilized as feed stock for petro chemical manufacturing processes. Carbon dioxide may be separated from the effluent gaseous mixture and recycled with steam into the formation.
A method of recovering hydrocarbons from a subterranean porous, permeable viscous petroleum containing earth formation, comprising: (a) introducing a mixture of air and steam into the formation to initiate a low temperature, controlled oxidation reaction, which low temperature, controlled oxidation
A method of recovering hydrocarbons from a subterranean porous, permeable viscous petroleum containing earth formation, comprising: (a) introducing a mixture of air and steam into the formation to initiate a low temperature, controlled oxidation reaction, which low temperature, controlled oxidation reaction results in recovering a portion of the hydrocarbon from the formation and leaving a solid, coke like residue on the formation mineral matrix; (b) thereafter introducing a gas which is at least 40% oxygen into the formation at a temperature of at least 600°F. and a pressure of at least 200 lbs. per square inch; (c) introducing a moderating fluid selecting from a group consisting of water, superheated steam, saturated steam, and carbon dioxide, to comingle with the gas so that partial oxidation of the solid carbon material to the carbon monoxide and hydrogen occurs in the formation; and (d) recovering the carbon monoxide and hydrogen from the subterranean formation.
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