CN1757876A - Membrane method oxygen rich nitrogen rich separation utilization method for thick oil steam injection exploration - Google Patents
Membrane method oxygen rich nitrogen rich separation utilization method for thick oil steam injection exploration Download PDFInfo
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- CN1757876A CN1757876A CN 200510046853 CN200510046853A CN1757876A CN 1757876 A CN1757876 A CN 1757876A CN 200510046853 CN200510046853 CN 200510046853 CN 200510046853 A CN200510046853 A CN 200510046853A CN 1757876 A CN1757876 A CN 1757876A
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Abstract
A method for recovering thick oil with high oil output includes such steps as separating O2 and N2 from air by membrane method, supplying the oxygen-enriched air to the combustion box of boiler to increase the steam output, and filling the steam along with the nitrogen0enriched air into the steam injecting well to increase the output of oil well.
Description
Technical field:
The present invention relates to a kind of process that is used for heavy oil exploitation via steam injection.
Background technology:
Viscous crude is the valuable source that a kind of distributed areas are extensive, reserves are rather abundant, adopts thermal methods exploitations such as steam injection steam flooding, steam soak usually.The capital equipment of steam injection is an injection boiler, its fuel is based on heavy oil and natural gas, fuel enters into the combustion chamber by nozzle, burn in the combustion chamber with after air mixes, the process of burning is exactly the process that flammable composition in the fuel and airborne oxygen violent oxidation reaction take place and discharges heat.In this process, the air register of boiler is blown into the combustion chamber with natural air and provides oxygen for burning, in order to guarantee that fuel can completing combustion, the air capacity of effective supply fuel combustion is more than theoretical air requirement, excess air coefficient is between 1.1~1.5, and efficiency of combustion is lower during owing to burning, and discharge amount of exhaust gas is bigger, instrument does not influence injection boiler steam supply effect, and causes environment pollution.
Summary of the invention:
The object of the present invention is to provide a kind of thick oil filling steam film method oxygen rich nitrogen rich that can in the thick oil filling boiler furnace course of work, reduce combustion air total amount, raising ignition temperature and thickened oil recovery effect to separate the method for utilizing.
The present invention realizes like this.This method is to adopt the rich nitrogen isolation technics of film oxygen enriching that air is separated through oxygen permeable membrane, and the oxygen-enriched air that will obtain after will separating is supplied with injection boiler and fuel mix is combustion-supporting, the nitrogen-rich gas that obtains after separating is transported in the steam pipe system together is injected in the vapour well, in order to the raising oil well output with steam.The activities of this method is as follows: natural air enters the oxygen permeable membrane piece-rate system after blower fan enters strainer; The oxygen-enriched air that oxygen permeable membrane piece-rate system low pressure one side goes out rice enters pre-heating system through voltage-stabilizing system, spray through nozzle again, it is combustion-supporting to enter injection boiler combustion chamber and fuel mix, and oxygen-enriched combustion-supporting can improve the temperature and the blackness of flame, reduces coefficient of excess air, reduce the gas fume after burning amount, improve heat utilization ratio, can reduce the burning-point of fuel simultaneously, improve flame intensity, accelerate burning velocity, promote that fuel combustion is complete; The nitrogen-rich gas of the aseptic drying of coming out in oxygen permeable membrane piece-rate system high-pressure side enters steam pipe system and vapor mixing after the air compressor supercharging, together be injected in the vapour well with steam, can play the effect that improves oil well output.
The present invention is novel, reasonable in design, utilize this method under the constant condition of injection boiler evaporation capacity for engine, can reduce effectively and be used for combustion-supporting air capacity, and capable of saving fuel 5~8%, simultaneously can make burning more abundant, reduce discharge amount of exhaust gas greatly, because the raising of oxygen enrichment percentage, ignition temperature is improved, help the utilization of low calorie fuels,, help the raising of oil well output because rich nitrogen injects into well with steam.
Description of drawings:
Accompanying drawing is the process flow diagram of method provided by the present invention.
The specific embodiment:
The present invention is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in the figure, natural air enters strainer through blower fan, enters the oxygen permeable membrane piece-rate system after the filtration; Oxygen permeable membrane piece-rate system low-pressure side come out oxygen-enriched air after voltage-stabilizing system voltage stabilizing and pre-heating system preheating, it is combustion-supporting to be ejected to the injection boiler combustion chamber through nozzle again, the nitrogen-rich gas that comes out in the piece-rate system high-pressure side then enters steam pipe system after the air compressor machine supercharging, together be injected in the vapour well with steam.Wherein, strainer adopts the air filter that uses in the industrial production, and film separation system adopts general oxygen permeable membrane piece-rate system in the system oxygen production process.
Claims (1)
1, a kind of thick oil filling steam film method oxygen rich nitrogen rich separates the method for utilizing, it is characterized in that: this method is to adopt the rich nitrogen isolation technics of film oxygen enriching that air is separated through oxygen permeable membrane, and the oxygen-enriched air that will obtain after will separating is supplied with injection boiler and fuel mix is combustion-supporting, the nitrogen-rich gas that obtains after separating is transported in the steam pipe system together is injected in the vapour well, in order to the raising oil well output with steam; The activities of this method is as follows: natural air enters the oxygen permeable membrane piece-rate system after blower fan enters strainer; The oxygen-enriched air that oxygen permeable membrane piece-rate system low pressure one side is come out enters pre-heating system through voltage-stabilizing system, and again through nozzle ejection, it is combustion-supporting to enter injection boiler combustion chamber and fuel mix; The nitrogen-rich gas of the aseptic drying of coming out in oxygen permeable membrane piece-rate system high-pressure side enters steam pipe system and vapor mixing after the air compressor supercharging, together be injected in the vapour well with steam.
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CN 200510046853 CN1757876A (en) | 2005-07-09 | 2005-07-09 | Membrane method oxygen rich nitrogen rich separation utilization method for thick oil steam injection exploration |
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CN 200510046853 CN1757876A (en) | 2005-07-09 | 2005-07-09 | Membrane method oxygen rich nitrogen rich separation utilization method for thick oil steam injection exploration |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102242626A (en) * | 2011-07-19 | 2011-11-16 | 中国石油天然气股份有限公司 | Steam drive exploitation method for heavy oil reservoir |
CN102606121A (en) * | 2012-03-15 | 2012-07-25 | 中国海洋石油总公司 | Multi-element thermal fluid production process for heavy oil reservoir and thermal recovery process |
CN102606122A (en) * | 2012-03-15 | 2012-07-25 | 中国海洋石油总公司 | Production process and thermal recovery process of multi-element hot fluid used for thickened oil storage |
CN103775042A (en) * | 2013-06-18 | 2014-05-07 | 中国石油天然气股份有限公司 | System and method for producing high-temperature high-pressure steam and flue gas on basis of oxygen-enriched boiler |
CN111577226A (en) * | 2020-06-05 | 2020-08-25 | 中国石油天然气集团有限公司 | Production increasing method and special device for exploiting thick oil by gas-nitrogen mixed injection |
-
2005
- 2005-07-09 CN CN 200510046853 patent/CN1757876A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102242626A (en) * | 2011-07-19 | 2011-11-16 | 中国石油天然气股份有限公司 | Steam drive exploitation method for heavy oil reservoir |
CN102606121A (en) * | 2012-03-15 | 2012-07-25 | 中国海洋石油总公司 | Multi-element thermal fluid production process for heavy oil reservoir and thermal recovery process |
CN102606122A (en) * | 2012-03-15 | 2012-07-25 | 中国海洋石油总公司 | Production process and thermal recovery process of multi-element hot fluid used for thickened oil storage |
CN102606121B (en) * | 2012-03-15 | 2015-07-22 | 中国海洋石油总公司 | Multi-element thermal fluid production process for heavy oil reservoir and thermal recovery process |
CN102606122B (en) * | 2012-03-15 | 2015-09-23 | 中国海洋石油总公司 | A kind of multielement hot fluid production technology for heavy crude reservoir and thermal recovery technology |
CN103775042A (en) * | 2013-06-18 | 2014-05-07 | 中国石油天然气股份有限公司 | System and method for producing high-temperature high-pressure steam and flue gas on basis of oxygen-enriched boiler |
CN111577226A (en) * | 2020-06-05 | 2020-08-25 | 中国石油天然气集团有限公司 | Production increasing method and special device for exploiting thick oil by gas-nitrogen mixed injection |
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