IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
UP-0726597
(2007-03-22)
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등록번호 |
US-7654320
(2010-03-31)
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발명자
/ 주소 |
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출원인 / 주소 |
- Occidental Energy Ventures Corp.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
105 인용 특허 :
11 |
초록
▼
A system and method is disclosed for treating a mixture of hydrocarbon and carbon dioxide gas produced from a hydrocarbon reservoir. The system includes a gas power turbine adapted to burn the produced gas mixture of hydrocarbon and carbon dioxide gas with oxygen as an oxidizing agent and a capture
A system and method is disclosed for treating a mixture of hydrocarbon and carbon dioxide gas produced from a hydrocarbon reservoir. The system includes a gas power turbine adapted to burn the produced gas mixture of hydrocarbon and carbon dioxide gas with oxygen as an oxidizing agent and a capture system to collect the exhaust gas from the power turbine. An inlet compressor receives exhaust gas from the capture system and compresses the exhaust gas for injection of the exhaust gas into a hydrocarbon reservoir and for recycle to the power turbine. The system may further include a membrane system that preferentially removes carbon dioxide and hydrogen sulfide from the produced gas stream before said stream is used as fuel gas in the power turbine. The carbon dioxide and hydrogen sulfide removed by the membrane system is combined with the exhaust gas, and the combined gas is injected into a hydrocarbon reservoir.
대표청구항
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What is claimed is: 1. A system for processing a produced gas mixture of hydrocarbon and carbon dioxide gas produced from one or more hydrocarbon reservoirs and re-injection of at least a portion of the carbon dioxide component into at least one oil reservoir for the purposes of enhanced oil recove
What is claimed is: 1. A system for processing a produced gas mixture of hydrocarbon and carbon dioxide gas produced from one or more hydrocarbon reservoirs and re-injection of at least a portion of the carbon dioxide component into at least one oil reservoir for the purposes of enhanced oil recovery from the at least one oil reservoir, said system comprising: a gas power turbine, said gas turbine having a burner adapted to burn the produced gas mixture of hydrocarbon gas and carbon dioxide as a fuel gas with substantially pure oxygen as an oxidizing agent, said fuel gas having a heating value of less than 500 Btu/scf; a capture system for capturing exhaust gas from the gas power turbine, said exhaust gas including a carbon dioxide component from the original produced gas mixture used as the fuel gas and a second carbon dioxide component formed as a product of the oxidation of the oxygen and a hydrocarbon component of the fuel gas; an inlet compressor, said inlet compressor receiving at least a portion of the exhaust gas from the capture system as a working fluid and compressing the captured exhaust gas, wherein at least a portion of the compressed captured exhaust gas from the inlet compressor is supplied to the burner of the gas power turbine and at least a portion of the compressed captured exhaust gas is for injection into the at least one oil reservoir; and a heat exchanger adapted to receive heat from the captured exhaust gas and transfer it to a stream of high-pressure power gas, wherein said stream of high-pressure power gas is then sent to a turbo expander engine used to drive an electric generator. 2. The system of claim 1 wherein the source of the high pressure power gas is nitrogen remaining after removal of oxygen from air in an air separation plant. 3. A system for processing a produced gas mixture of hydrocarbon and carbon dioxide gas produced from one or more hydrocarbon reservoirs and re-injection of at least a portion of the carbon dioxide component into at least one oil reservoir for the purposes of enhanced oil recovery from the at least one oil reservoir, said system comprising: a gas power turbine, said gas turbine having a burner adapted to burn the produced gas mixture of hydrocarbon gas and carbon dioxide as a fuel gas with substantially pure oxygen as an oxidizing agent, said fuel gas having a heating value of less than 500 Btu/scf; a capture system for capturing exhaust gas from the gas power turbine, said exhaust gas including a carbon dioxide component from the original produced gas mixture used as the fuel gas and a second carbon dioxide component formed as a product of the oxidation of the oxygen and a hydrocarbon component of the fuel gas; an inlet compressor, said inlet compressor receiving at least a portion of the exhaust gas from the capture system as a working fluid and compressing the captured exhaust gas, and wherein at least a portion of the compressed captured exhaust gas from the inlet compressor is supplied to the burner of the gas power turbine and at least a portion of the compressed captured exhaust gas is for injection into at least one oil reservoir; and a membrane system upstream of the inlet to the gas power turbine, wherein said membrane removes at least a portion of carbon dioxide and hydrogen sulfide from the produced gas mixture before said produced gas mixture is used for fuel gas in the gas power turbine. 4. The system of claim 3 wherein the portion of carbon dioxide and hydrogen sulfide removed by the membrane system is combined with the captured exhaust gas for injection of the combined stream into at least one hydrocarbon reservoir. 5. The system of claim 3 further including: a first electric generator driven by the gas power turbine. 6. The system of claim 3 further including: at least one gas injection compressor receiving at least a portion of the captured exhaust gas as working fluid for compression and injection into at least one oil reservoir. 7. A method for conducting a carbon dioxide enhanced hydrocarbon recovery process comprising the steps of: (a) providing produced gas from one or more hydrocarbon reservoirs, said produced gas containing a hydrocarbon gas component and a carbon dioxide component, said carbon dioxide component at least 50 mol %; (b) processing the produced gas through a membrane system to remove at least a portion of the carbon dioxide and hydrogen sulfide components; (c) providing substantially pure oxygen, oxygen component at least 90 mol %; (d) combusting the produced gas as fuel in a burner in a gas power turbine with a stoichiometric excess amount of oxygen for substantially complete combustion; (e) collecting the exhaust gas from combustion of the produced gas in the burner in a gas power turbine, said collected exhaust gas being greater than 90 mol % carbon dioxide, said collected exhaust gas carbon dioxide component comprising: a first uncombusted carbon dioxide component present in the produced gas provided as fuel to the gas power turbine, and a second carbon dioxide component formed by the combustion of the hydrocarbon component of the produced gas provided as fuel to the gas power turbine; (f) compressing the collected exhaust gas in at least one inlet compressor; and (g) providing at least a portion of the compressed collected exhaust gas to the burner of the gas power turbine and providing at least a portion of the compressed collected exhaust gas for injection into at least one oil reservoir; and (h) mixing said removed carbon dioxide portion and hydrogen sulfide portion from the membrane system with the collected exhaust gas from the gas power turbine prior to injection into the at least one oil reservoir. 8. The method of claim 7 further including the step: providing at least a portion of the compressed collected exhaust gas to at least one gas injection compressor for compression and injection into the at least one oil reservoir. 9. The method of claim 7 further including the step: driving at least one gas injection compressor with the gas power turbine. 10. The method of claim 7 further including the step: driving at least one gas injection compressor with electricity generated by an electric generator being driven by the gas power turbine. 11. The method of claim 7 further including the steps: recovering heat from the collected exhaust gas and using said heat to create steam; driving a steam turbine with said steam; and driving an electric generator with said steam turbine. 12. The method of claim 7 further including the steps: driving the inlet gas compressor with the gas power turbine. 13. The method of claim further including the step of: further compressing the compressed gas using one or more stages of additional compression that may be powered by electricity from at least one electric generator. 14. The method of claim 7 further including the step: driving the inlet compressor with electricity generated by an electric generator. 15. The method of claim 7 wherein the step of processing the produced gas through a membrane system to remove a portion of the carbon dioxide and hydrogen sulfide components increases the Btu/scf of produced gas exiting the membrane system, said produced gas exiting the membrane system being used as the fuel gas for the gas power turbine. 16. The method of claim 7 further including the steps of: controlling at least one non-dimensional parameter of the inlet compressor and/or power turbine by at least one of: adjusting the water content of the exhaust gas that is received by the inlet compressor, adjusting the temperature and composition of the combustion gas working fluid in the power turbine by steam injection, adjusting the rotational speed of the inlet compressor and/or the power turbine. 17. The method of claim 7 further including the step: powering an air separation plant that provides the oxygen with electric power generated by a generator. 18. The method of claim 7 further including the steps: recovering heat from the collected exhaust gas and using said heat to create steam; and injecting at least a portion of said steam directly into the gas power turbine in order to increase its power output. 19. The method of claim 7 further including: driving at least one inlet compressor with the gas power turbine. 20. The method of claim 7 further including the step: driving an electric generator with the gas power turbine. 21. A system for processing a produced gas mixture of hydrocarbon and carbon dioxide gas produced from one or more hydrocarbon reservoirs and re-injection of at least a portion of the carbon dioxide component into at least one oil reservoir for the purposes of enhanced oil recovery from the at least one oil reservoir, said system comprising: a gas power turbine, said gas turbine having a burner adapted to burn the produced gas mixture of hydrocarbon gas and carbon dioxide as a fuel gas with substantially pure oxygen as an oxidizing agent, said fuel gas having a heating value of less than 500 Btu/scf; a capture system for capturing exhaust gas from the gas power turbine, said exhaust gas including a carbon dioxide component from the original produced gas mixture used as the fuel gas and a second carbon dioxide component formed as a product of the oxidation of the oxygen and a hydrocarbon component of the fuel gas; an inlet compressor, said inlet compressor receiving at least a portion of the exhaust gas from the capture system as a working fluid and compressing the captured exhaust gas, and wherein at least a portion of the compressed captured exhaust gas from the inlet compressor is supplied to the burner of the gas power turbine and at least a portion of the compressed captured exhaust gas is for injection into the at least one oil reservoir; and a control system adapted to adjust the composition of the exhaust gas received by the inlet compressor, said control system including: a variable temperature condenser to remove water from the exhaust gas that is received by the inlet compressor such that one or more non-dimensional parameters of the inlet compressor with the exhaust gas as a working fluid approximate the non-dimensional parameters of the inlet compressor with air as a working fluid. 22. A system for processing a produced gas mixture of hydrocarbon and carbon dioxide gas produced from one or more hydrocarbon reservoirs and re-injection of at least a portion of the carbon dioxide component into at least one oil reservoir for the purposes of enhanced oil recovery from the at least one oil reservoir, said system comprising: a gas power turbine, said gas turbine having a burner adapted to burn the produced gas mixture of hydrocarbon gas and carbon dioxide as a fuel gas with substantially pure oxygen as an oxidizing agent, said fuel gas having a heating value of less than 500 Btu/scf; a capture system for capturing exhaust gas from the gas power turbine, said exhaust gas including a carbon dioxide component from the original produced gas mixture used as the fuel gas and a second carbon dioxide component formed as a product of the oxidation of the oxygen and a hydrocarbon component of the fuel gas; an inlet compressor, said inlet compressor receiving at least a portion of the exhaust gas from the capture system as a working fluid and compressing the captured exhaust gas, and wherein at least a portion of the compressed captured exhaust gas from the inlet compressor is supplied to the burner of the gas power turbine and at least a portion of the compressed captured exhaust gas is for injection into the at least one oil reservoir; and a control system adapted to adjust the composition of the combustion gas received by the power turbine, said control system including: variable steam injection into the power turbine to modify the temperature and composition of the combustion gas received by the power turbine such that the non-dimensional parameters of the power turbine with the combustion gas as a working fluid approximate the non-dimensional parameters of the power turbine with air as a working fluid. 23. A method for conducting a carbon dioxide enhanced hydrocarbon recovery process comprising: providing produced gas from one or more hydrocarbon reservoirs, said produced gas containing a hydrocarbon gas component and a carbon dioxide component, said carbon dioxide component at least 50 mol %; providing substantially pure oxygen, said oxygen component at least 90 mol %; combusting the produced gas as fuel in a burner in a gas power turbine with a stoichiometric excess amount of oxygen for substantially complete combustion; collecting the exhaust gas from combustion of the produced gas in the burner in a gas power turbine, said collected exhaust gas being greater than 90 mol % carbon dioxide, said collected exhaust gas carbon dioxide component comprising: a first uncombusted carbon dioxide component present in the produced gas provided as fuel to the gas power turbine, and a second carbon dioxide component formed by the combustion of the hydrocarbon component of the produced gas provided as fuel to the gas power turbine; compressing the collected exhaust gas in at least one inlet compressor; providing at least a portion of the compressed collected exhaust gas to the burner of the gas power turbine and providing at least a portion of the compressed collected exhaust gas for injection into the at least one oil reservoir; and controlling one or more non-dimensional parameters of the inlet compressor by passing the exhaust gas through a condenser and adjusting the temperature of the exhaust gas in said condenser to control water content of said exhaust gas that is received as a working fluid by the inlet compressor wherein the non-dimensional parameters of the inlet compressor approximate the non-dimensional parameters of the inlet compressor with air as a working fluid. 24. A method for conducting a carbon dioxide enhanced hydrocarbon recovery process comprising: providing produced gas from one or more hydrocarbon reservoirs, said produced gas containing a hydrocarbon gas component and a carbon dioxide component, said carbon dioxide component at least 50 mol %; providing substantially pure oxygen, said oxygen component at least 90 mol %; combusting the produced gas as fuel in a burner in a gas power turbine with a stoichiometric excess amount of oxygen for substantially complete combustion; collecting the exhaust gas from combustion of the produced gas in the burner in a gas power turbine, said collected exhaust gas being greater than 90 mol % carbon dioxide, said collected exhaust gas carbon dioxide component comprising: a first uncombusted carbon dioxide component present in the produced gas provided as fuel to the gas power turbine, and a second carbon dioxide component formed by the combustion of the hydrocarbon component of the produced gas provided as fuel to the gas power turbine; compressing the collected exhaust gas in at least one inlet compressor; providing at least a portion of the compressed collected exhaust gas to the burner of the gas power turbine and providing at least a portion of the compressed collected exhaust gas for injection into the at least one oil reservoir; and controlling one or more non-dimensional parameters of the power turbine by injecting steam into the power turbine to adjust the temperature and composition of the combustion gas as a working fluid wherein the non-dimensional parameters of the power turbine approximate the non-dimensional parameters of a power turbine with air as a working fluid. 25. A method for conducting a carbon dioxide enhanced hydrocarbon recovery process comprising: providing produced gas from one or more hydrocarbon reservoirs, said produced gas containing a hydrocarbon gas component and a carbon dioxide component, said carbon dioxide component at least 50 mol %; providing substantially pure oxygen, said oxygen component at least 90 mol %; combusting the produced gas as fuel in a burner in a gas power turbine with a stoichiometric excess amount of oxygen for substantially complete combustion; collecting the exhaust gas from combustion of the produced gas in the burner in a gas power turbine, said collected exhaust gas being greater than 90 mol % carbon dioxide, said collected exhaust gas carbon dioxide component comprising: a first uncombusted carbon dioxide component present in the produced gas provided as fuel to the gas power turbine, and a second carbon dioxide component formed by the combustion of the hydrocarbon component of the produced gas provided as fuel to the gas power turbine; compressing the collected exhaust gas in at least one inlet compressor; providing at least a portion of the compressed collected exhaust gas to the burner of the gas power turbine and providing at least a portion of the compressed collected exhaust gas for injection into the at least one oil reservoir; and controlling the flow of exhaust gas to the inlet compressor during transient conditions by removing low pressure carbon dioxide upstream of the inlet compressor. 26. A method for conducting a carbon dioxide enhanced hydrocarbon recovery process comprising: providing produced gas from one or more hydrocarbon reservoirs, said produced gas containing a hydrocarbon gas component and a carbon dioxide component, said carbon dioxide component at least 50 mol %; providing substantially pure oxygen, said oxygen component at least 90 mol %; combusting the produced gas as fuel in a burner in a gas power turbine with a stoichiometric excess amount of oxygen for substantially complete combustion; collecting the exhaust gas from combustion of the produced gas in the burner in a gas power turbine, said collected exhaust gas being greater than 90 mol % carbon dioxide, said collected exhaust gas carbon dioxide component comprising: a first uncombusted carbon dioxide component present in the produced gas provided as fuel to the gas power turbine, and a second carbon dioxide component formed by the combustion of the hydrocarbon component of the produced gas provided as fuel to the gas power turbine; compressing the collected exhaust gas in at least one inlet compressor; providing at least a portion of the compressed collected exhaust gas to the burner of the gas power turbine and providing at least a portion of the compressed collected exhaust gas for injection into the at least one oil reservoir; and rotating the inlet compressor at a different rotational speed than the rotational speed of the power turbine to independently control the non-dimensional parameters of the inlet compressor and the power turbine.
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