CN107542442A - A kind of energy-efficient low stain strength fire flood system - Google Patents
A kind of energy-efficient low stain strength fire flood system Download PDFInfo
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 151
- 239000003921 oil Substances 0.000 claims abstract description 116
- 239000007789 gas Substances 0.000 claims abstract description 107
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 74
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 74
- 239000002918 waste heat Substances 0.000 claims abstract description 53
- 238000011084 recovery Methods 0.000 claims abstract description 48
- 239000010779 crude oil Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 37
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 34
- 239000001301 oxygen Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims description 49
- 230000006835 compression Effects 0.000 claims description 49
- 238000009833 condensation Methods 0.000 claims description 27
- 230000005494 condensation Effects 0.000 claims description 27
- 238000002485 combustion reaction Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- 239000007792 gaseous phase Substances 0.000 claims description 18
- 239000002826 coolant Substances 0.000 claims description 14
- 230000008676 import Effects 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- 238000006477 desulfuration reaction Methods 0.000 claims description 10
- 230000023556 desulfurization Effects 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 239000007791 liquid phase Substances 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000012071 phase Substances 0.000 claims description 7
- 239000008346 aqueous phase Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 229960004424 carbon dioxide Drugs 0.000 description 59
- 238000005516 engineering process Methods 0.000 description 14
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 6
- 238000000605 extraction Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 238000010795 Steam Flooding Methods 0.000 description 3
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 3
- 229910002090 carbon oxide Inorganic materials 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
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- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Abstract
The invention provides a kind of energy-efficient low stain strength fire flood system.The system includes oxygenerator, gas injection device, extracting device of oil, TRT and carbon dioxide recovering apparatus；Oxygenerator is used to provide oxygen；Gas injection device is connected with oxygenerator；Extracting device of oil is used to produce the stream material during crude oil driving, extracting device of oil also includes the waste-heat recovery device and separator being sequentially connected with, waste-heat recovery device is used for the waste heat for reclaiming stream material, and separator is for crude oil, carbon dioxide and the water in the stream material after separating waste heat recovery；TRT is connected with waste-heat recovery device, waste heat is used to generate electricity, and TRT electrically connects the energy needed in oxygen preparation to provide with oxygenerator；Carbon dioxide recovering apparatus is connected with separator, for reclaiming carbon dioxide.Above-mentioned fire flood system has high efficiency, low cost, the effect of environmental protection, can be applied to various viscous crude, thin oil, the high efficiency, low cost oil recovery for adopting excess oil etc..
Description
Technical field
The present invention relates to crude oil fire flood technical field, in particular to a kind of energy-efficient low stain strength fire
Drive oil extraction system.
Background technology
Situ combustion technology, which is also known as in underground combustion or layer, burns, also known as fireflood extraction system, is one kind inside oil reservoir
Produce the oil recovery by heating technology of heat.Accurately say, refer to air or oxygen to be injected into inside oil reservoir, make its in oil reservoir with
Organic-fuel reacts, and helps to harvest unburned crude oil with caused heat.Situ combustion technology is a kind of with obvious
The oil recovery by heating method of technical advantage and potentiality, it is the second largest technology of thickened oil recovery.It has oil displacement efficiency high by (typically up to 80
~90%), unit heating cost and steam phase are when (air injection, steam injection produce 1.0 × 104The direct cost difference of kilocalorie heat
For 1.2 yuan, 1.3 yuan), oil reservoir wide adaptation range (from oil sheet to thick oil pay, from shallow oil reservoir to deep fat, from thin oil to viscous crude,
And developed oil reservoir) the features such as.
The U.S. was just proposed using heating power or the method for noting solvent early in J.O. Li Weisi in 1917, the original in displacement stratum
Oil is to improve the concept of recovery ratio.Nineteen twenty-three Wa Erkete and Howard make oil reservoir exist it will also be appreciated that inject air into oil reservoir
The key of underground combustion process is to burn a part of crude oil, produces heat to reduce viscosity, while produce the drive of displacement crude oil
Power.In nineteen twenty-three, United States Patent (USP) is arrived in application to their this understanding respectively.At that time, because new oil field exploration success ratio compares
Height, the investor is not intended to carry out to test has just started laboratory test research until nineteen forty-seven.Into after the fifties, the stone in the U.S.
Oily resource is day by day exhausted, and new oil field exploration success ratio reduces, and this new technology is just widely paid close attention to.Since nineteen fifty-one,
Each oil company expands a series of experimental study in oil field so that situ combustion technology has obtained quick development.Generation
An earliest combustion in situ field test is to enter in the Bert Le Siweier oil fields of Oklahoma, United States nineteen forty-two in boundary
Capable.After the fifties, according to statistics, the U.S. has carried out individual combustion in situ project more than 70.There is the former Soviet Union in addition, it is Dutch,
More than 40 countries such as Romania, Hungary, Germany, India have successively carried out the related work of combustion in situ oil recovery.China from
From 1958, successively in Xinjiang, Yumen, triumph, combustion in situ experimental study has been carried out in the oil field such as Jilin and the Liaohe River, because by that time
The limitation of condition, situ combustion technology make way for steam injection recovery, and the field application in China is also few in number until at present, and
Current fire flood technology energy consumption is higher, cost is higher, seriously polluted.
The content of the invention
It is existing to solve it is a primary object of the present invention to provide a kind of energy-efficient low stain strength fire flood system
The problem of fireflood oil recovery technique energy consumption is higher in technology, cost is higher, seriously polluted.
To achieve these goals, according to an aspect of the invention, there is provided a kind of energy-efficient low stain strength fire
Oil extraction system is driven, it includes：Oxygenerator, for providing oxygen；Gas injection device, it is connected with oxygenerator, for into oil reservoir
Oxygen is injected to light burning oil reservoir and drive crude oil flow；Extracting device of oil, for producing the fluid during crude oil drives
Matter, extracting device of oil also include the waste-heat recovery device and separator being sequentially connected with, and waste-heat recovery device is used to reclaim fluid
The waste heat of matter, separator is for crude oil, carbon dioxide and the water in the stream material after separating waste heat recovery；TRT,
It is connected with waste-heat recovery device, the waste heat that waste-heat recovery device is reclaimed is used to generate electricity, and TRT and oxygenerator electricity
Connect the energy needed to provide in oxygen preparation；And carbon dioxide recovering apparatus, it is connected with separator, for reclaiming two
Carbonoxide.
Further, separator includes：Gas-liquid separator, it is connected with waste-heat recovery device, and gas-liquid separator is set
There are gaseous phase outlet and liquid-phase outlet, gaseous phase outlet is connected with carbon dioxide recovering apparatus；Oil water separator, with liquid-phase outlet phase
Even, and oil water separator is provided with crude exports and aqueous phase outlet.
Further, carbon dioxide recovering apparatus includes：Desulfurizer, it is connected with gaseous phase outlet, for gaseous phase outlet
The gas of discharge carries out desulfurization process；Compression condensation device, compression condensation device are connected with desulfurizer, and compression condensation device
It is additionally provided with carbon dioxide gas outlet and CONDENSATE OIL AND GAS outlet；And first compression set, with carbon dioxide gas outlet phase
Even, the carbon dioxide liquefaction for carbon dioxide gas outlet to be discharged.
Further, waste-heat recovery device is heat exchanger, and heat exchanger is provided with thermal material import to be changed, thermal material to be changed goes out
Mouth, cooling medium inlet and cooling medium outlet, thermal material import to be changed are used to be passed through stream material.
Further, TRT includes：Generating working medium feeding mechanism, for supplying generating working medium, and generating working medium supplies
The outlet of device is answered to be connected with cooling medium inlet；Generator, is provided with generating working medium entrance, and generating working medium entrance is situated between with cooling
Matter outlet is connected, and generator electrically connects with oxygenerator.
Further, carbon dioxide recovering apparatus includes desulfurizer, compression condensation device and the first compression set, takes off
Sulphur device is connected with gaseous phase outlet, and the gas for being discharged to gaseous phase outlet carries out desulfurization process, compression condensation device and desulfurization
Device is connected, and compression condensation device be additionally provided with carbon dioxide gas outlet and CONDENSATE OIL AND GAS outlet, the first compression set with
Carbon dioxide gas outlet is connected, for the carbon dioxide liquefaction for discharging carbon dioxide gas outlet；TRT is also
Including heating unit, heating unit is arranged on the pipeline between cooling medium outlet and generating working medium entrance, and heating unit is set
Fuel inlet is equipped with, fuel inlet is connected with CONDENSATE OIL AND GAS outlet.
Further, heating unit is additionally provided with combustion product gases outlet；Compression condensation device is additionally provided with combustion product gases and entered
Mouthful, combustion product gases import is connected with combustion product gases outlet.
Further, the first compression set is additionally provided with fixed gas outlet, and fixed gas outlet is connected with gas injection device, is used for
By caused fixed gas injection oil reservoir in the first compression set.
Further, gas injection device includes：Second compressor, is connected with oxygenerator, for compressed oxygen；Gas injection well,
The import of gas injection well is connected with the second compressor, for the oxygen after compression to be injected into oil reservoir；And igniter, igniting
Device is used to light burning oil reservoir.
Further, extracting device of oil also includes producing well, and producing well is used to producing stream material, and the outlet of producing well with
Waste-heat recovery device is connected.
Apply the technical scheme of the present invention, there is provided a kind of energy-efficient low stain strength fire flood system, it includes
Oxygenerator, gas injection device, extracting device of oil, TRT and carbon dioxide recovering apparatus；Oxygenerator is used to provide oxygen；
Gas injection device is connected with oxygenerator, for injecting oxygen into oil reservoir to light burning oil reservoir and drive crude oil flow；Recover the oil
Device is used to produce the stream material during crude oil driving, and extracting device of oil also includes the waste-heat recovery device being sequentially connected with and divided
From device, waste-heat recovery device is used for the waste heat for reclaiming stream material, and separator is used to separate the fluid after waste heat recovery
Crude oil, carbon dioxide and water in matter；TRT is connected with waste-heat recovery device, the waste heat that waste-heat recovery device is reclaimed
For generating electricity, and TRT electrically connects the energy needed to provide in oxygen preparation with oxygenerator；Carbon dioxide recovery fills
Put and be connected with separator, for reclaiming carbon dioxide.
Above-mentioned fire flood system provided by the invention, after oxygen is made using oxygenerator, by gas injection device by oxygen
Gas injects the burning oil reservoir of oil reservoir, so that oxidation reaction occurs for the heavy component and coke of pure oxygen and crude oil, discharges titanium dioxide
Carbon, water and substantial amounts of heat, raise the crude oil temperature of surrounding, viscosity rapidly diminishes, in vapor, carbon dioxide and strong
Extracting device of oil is flowed under the pressure-driven effect of degree.The stream material produced using extracting device of oil, first will through waste-heat recovery device
Its temperature is reduced, and crude oil, carbon dioxide and the water in stream material are separated by separator.The waste heat wherein reclaimed can carry
Supply TRT is generated electricity, and is then supplied electricity to oxygenerator and is carried out oxygen processed.The carbon dioxide separated passes through titanium dioxide
Carbon retracting device reclaims, and water can then carry out re-injection and form steam drive crude oil flow again.
The fire flood of strength is carried out using fire flood system provided by the invention, is flowed after being effectively utilized crude oil driving
The waste heat of animal matter is generated electricity, and electric energy is used for oxygen processed, and carbon dioxide is recycled.This effectively reduces fire flood process
In energy consumption, reduce production cost, meanwhile, fire flood system of the invention discharge is few even without any discharge, effectively solution
The pollution problem for current fire flood process of having determined.In a word, fire flood system provided by the invention have high efficiency, it is low into
Originally, the effect of environmental protection, various viscous crude, thin oil, the high-efficiency and low-cost oil recovery for adopting excess oil etc. be can apply to.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows fire flood system schematic according to an embodiment of the present.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
10th, oxygenerator；20th, gas injection device；21st, the second compressor；22nd, gas injection well；23rd, igniter；30th, recover the oil dress
Put；31st, waste-heat recovery device；32nd, separator；33rd, producing well；321st, gas-liquid separator；322nd, oil water separator；40th, send out
Electric installation；41st, generating working medium feeding mechanism；42nd, generator；43rd, heating unit；50th, carbon dioxide recovering apparatus；51st, desulfurization
Device；52nd, compression condensation device；53rd, the first compression set.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The application is described in further detail below in conjunction with specific embodiment, these embodiments are it is not intended that limit this
Apply for scope claimed.
As described by background section, fire flood technology energy consumption of the prior art is higher, cost is higher, dirty
Dye is serious.
In order to solve this problem, the invention provides a kind of energy-efficient low stain strength fire flood system, such as Fig. 1
Shown, it includes oxygenerator 10, gas injection device 20, extracting device of oil 30, TRT 40 and carbon dioxide recovering apparatus 50；
Oxygenerator 10 is used to provide oxygen；Gas injection device 20 is connected with oxygenerator 10, for injecting oxygen into oil reservoir a to light
Burning oil reservoir simultaneously drives crude oil flow；Extracting device of oil 30 is used to produce the stream material during crude oil driving, extracting device of oil 30
Also include the waste-heat recovery device 31 and separator 32 being sequentially connected with, waste-heat recovery device 31 is used to reclaim the remaining of stream material
Heat, separator 32 is for crude oil, carbon dioxide and the water in the stream material after separating waste heat recovery；TRT 40 with it is remaining
Heat reclamation device 31 is connected, and the waste heat that waste-heat recovery device 31 is reclaimed is used to generate electricity, and TRT 40 and oxygenerator
The energy that 10 electrical connections are needed with providing in oxygen preparation；Carbon dioxide recovering apparatus 50, it is connected with separator 32, for returning
Receive carbon dioxide.
Above-mentioned fire flood system provided by the invention, after oxygen is made using oxygenerator 10, passes through gas injection device 20
By oxygen injection oil reservoir a burning oil reservoir, so that oxidation reaction occurs for the heavy component and coke of pure oxygen and crude oil, two are discharged
Carbonoxide, water and substantial amounts of heat, raise the crude oil temperature of surrounding, viscosity rapidly diminishes, vapor, carbon dioxide with
And flow to extracting device of oil 30 under the pressure-driven effect of intensity.The stream material produced using extracting device of oil 30, first returned through waste heat
Receiving apparatus 31 reduces its temperature, and crude oil, carbon dioxide and the water in stream material are separated by separator 32.Wherein reclaim
Waste heat TRT 40 can be supplied to be generated electricity, then supply electricity to oxygenerator 10 and carry out oxygen processed.Two separated
Carbonoxide is reclaimed by carbon dioxide recovering apparatus 50, and water can then carry out re-injection and form steam drive crude oil flow again.
Strength fire flood is carried out using fire flood system provided by the invention, is flowed after being effectively utilized crude oil driving
The waste heat of material is generated electricity, and electric energy is used for oxygen processed, and carbon dioxide is recycled.This is effectively reduced during fire flood
Energy consumption, reduce production cost, meanwhile, fire flood system of the invention discharge is few even without any discharge, effectively solves
The pollution problem of current fire flood process.
Preferably, oxygenerator 10 is VPSA oxygen production units.It can directly use air as raw material, with electric energy by sky
Gas carries out separation oxygen producing.The oxygenerator has the advantages of energy-efficient.When fireflood oxygen consuming amount is very big, can also use
Deep cooling oxygenerator.
In a kind of preferred embodiment, separator 32 includes gas-liquid separator 321 and oil water separator 322, gas-liquid
Separator 321 is connected with waste-heat recovery device 31, and gas-liquid separator 321 is provided with gaseous phase outlet and liquid-phase outlet, and gas phase goes out
Mouth is connected with carbon dioxide recovering apparatus 50；Oil water separator 322 is connected with liquid-phase outlet, and oil water separator 322 is provided with
Crude exports and aqueous phase outlet.
During crude oil driving in caused stream material in addition to crude oil, also containing a large amount of vapor and carbon dioxide
Gas, after the recovery waste heat of waste-heat recovery device 31, water vapor condensation is for water.Can will wherein using gas-liquid separator 321
Carbon dioxide and crude oil, water formed liquid phase separation come, can be by the crude oil in liquid phase using oil water separator 322
Separated with water, crude oil transmission station is gone in crude oil output.
Preferably, above-mentioned oil water separator 322 is provided with crude exports and the first delivery port, and the first delivery port leads to burning
Oil reservoir.So can be by this part water re-injection into oil reservoir, to be further converted to vapor driving crude oil flow.And so may be used
Further to reduce the discharge capacity of system, pollution is reduced.
In a kind of preferred embodiment, as shown in figure 1, carbon dioxide recovering apparatus 50 includes desulfurizer 51, compression
The compression set 53 of condensing unit 52 and first；Desulfurizer 51 is connected with gaseous phase outlet, for the gas discharged to gaseous phase outlet
Body carries out desulfurization process；Compression condensation device 52 is connected with desulfurizer 51, and compression condensation device 52 is additionally provided with titanium dioxide
Carbon gas vent and CONDENSATE OIL AND GAS outlet；First compression set 53 is connected with carbon dioxide gas outlet, for by carbon dioxide
The carbon dioxide liquefaction of gas vent discharge.So, the gas that can be discharged using desulfurizer 51 to gaseous phase outlet is entered
Row desulfurization process, can be by carbon dioxide using compression condensation device 52 further to reduce the sulfur content in carbon dioxide
A small amount of moisture and heavy hydrocarbon compression condensation of middle carrying separates out, can be by the pressurized carbon dioxide after purification using the first compression set 53
Contracting is handled, and forms carbon dioxide product or with used for other purposes.It should be noted that in the compression condensation process of compression condensation device 52
In, what is first separated out is moisture, and what is separated out afterwards is heavy hydrocarbon (CONDENSATE OIL AND GAS), therefore can separate this partial moisture and CONDENSATE OIL AND GAS
Come.Preferably, this partial moisture leads to burning oil reservoir, to be further converted to vapor driving crude oil flow.
In a kind of preferred embodiment, waste-heat recovery device 31 is heat exchanger, and heat exchanger is provided with thermal material to be changed and entered
Mouth, material outlet to be changed, cooling medium inlet and cooling medium outlet, thermal material import to be changed are used to be passed through stream material.
Using heat exchanger, the waste heat of stream material can be reclaimed by way of heat exchange.The cooling medium of use can be water,
Can also directly be generating working medium, such as carbon dioxide, propane or freon.
In a kind of preferred embodiment, TRT 40 includes generating working medium feeding mechanism 41 and generator 42, generates electricity
Working medium feeding mechanism 41 is used to supply generating working medium, and the outlet of generating working medium feeding mechanism 41 is connected with cooling medium inlet；
Generator 42 is provided with generating working medium entrance, and generating working medium entrance is connected with cooling medium outlet, and generator 42 fills with oxygen processed
Put 10 electrical connections.So, generating working medium can be directly heated using the waste heat of temperature flowing material caused by crude oil driving process,
Then generated electricity using generating working medium.So more directly efficiently utilize this part oil production waste heat so that of the invention
Oil extraction system is more energy-efficient.Above-mentioned generator 42 is preferably turbine generator, can directly utilize high-voltage power working medium
Steam turbine is driven to rotate, so as to drive electrical power generators.
In a kind of preferred embodiment, carbon dioxide recovering apparatus 50 includes desulfurizer 51, compression condensation device 52
And first compression set 53；Desulfurizer 51 is connected with gaseous phase outlet, and the gas for being discharged to gaseous phase outlet carries out desulfurization
Processing；Compression condensation device 52 is connected with the gaseous phase outlet of desulfurizer 51, and compression condensation device 52 is additionally provided with carbon dioxide
Gas vent and CONDENSATE OIL AND GAS outlet；First compression set 53 is connected with carbon dioxide gas outlet, for by carbon dioxide gas
The carbon dioxide liquefaction of body outlet discharge；TRT 40 also includes heating unit 43, and heating unit 43 is arranged on cooling
On pipeline between media outlet and generating working medium entrance, heating unit 43 is provided with fuel inlet, fuel inlet and condensate
Gas outlet is connected.So, generating working medium can be heated using this part CONDENSATE OIL AND GAS as fuel combustion and further, so as to
Resource utilization is further improved, system energy consumption is reduced, reduces pollution.
Exemplified by using carbon dioxide as generating working medium, during carrying out practically, carbon dioxide is first in the effect of heat exchanger
The lower waste heat for absorbing stream material, turns into precritical high-pressure gaseous, then formed and faced under the heating of CONDENSATE OIL AND GAS calory burning
Boundary or supercritical, high pressure carbon dioxide are used to generate electricity.
Preferably, condensation oil saver is additionally provided between fuel inlet and CONDENSATE OIL AND GAS outlet, for keeping in condensate
Gas, further to improve the operation stability of system.
Preferably, above-mentioned heating unit 43 is high-pressure boiler, and high-pressure boiler, which is additionally provided with, helps fuel gas inlet, and the combustion-supporting gas enters
Mouth is connected with the outlet of oxygenerator 10.This can utilize pure oxygen burning CONDENSATE OIL AND GAS, so that high-voltage power work is produced more efficiently
Matter is used to generate electricity.It is connected further, it is also possible to which the high-pressure working medium of high-pressure boiler is exported with each compressor and Roots blower, to carry
For power.It is highly preferred that generator 42 is turbine generator, it is additionally provided with high pressure gas outlet, completes to promote for discharging
The generating working medium of effect；Above-mentioned TRT 40 also includes the condenser, air cooler and the booster pump that are sequentially connected with, and condenser with
High pressure gas outlet is connected, and booster pump is connected with generating working medium entrance.So, generating working medium can be through cold after impetus is completed
Pressurization closed circulation after solidifying, without any discharge.
In a kind of preferred embodiment, heating unit 43 is additionally provided with combustion product gases outlet, for discharging CONDENSATE OIL AND GAS
Combustion product gases；Compression condensation device 52 is additionally provided with combustion product gases import, and combustion product gases import is connected with combustion product gases outlet.
So condensation process can be compressed in the lump to the combustion product gases of CONDENSATE OIL AND GAS, after separating moisture therein, after desulfurization
The carbon dioxide of gaseous phase outlet discharge compresses to form carbon dioxide product or used for other purposes in the lump.
Have a small amount of fixed gas during compressing carbon dioxide using the first compression set 53 to produce, a kind of excellent
In the embodiment of choosing, the first compression set 53 is additionally provided with fixed gas outlet, and fixed gas outlet is connected with gas injection device 20, used
In caused fixed gas in the first compression set 53 is injected into oil reservoir.These fixed gases on the one hand so can be recycled, are entered
One step reduces discharge, on the other hand can also adjust the pure oxygen content in oil reservoir, makes oil reservoir burning more stable.
In a preferred embodiment, gas injection device 20 includes the second compressor 21, gas injection well 22 and igniting dress
Put 23；Second compressor 21 is connected with oxygenerator 10, for compressed oxygen；The import of gas injection well 22 and the phase of the second compressor 21
Even, for the oxygen after compression to be injected into oil reservoir；Igniter 23 is used to light burning oil reservoir.Utilize the second compressor 21
The oxygen of the output of oxygenerator 10 can be compressed, the oxygen after supercharging is injected into oil reservoir through gas injection well 22, then lighted a fire again
Start the oil reservoir that burns under the igniting of device 23.In actual mechanical process, the outlet of preferably above-mentioned first compression set 53 and note
Gas well 22 is connected, and to be passed through carbon dioxide into oil reservoir as needed, adjusts the oxygen content of oil reservoir.
Preferably, above-mentioned fire flood system also includes air accumulator, and it is arranged on the second compressor 21 and oxygenerator 10
Between pipeline on, for keeping in oxygen, improve gas injection stability.It is highly preferred that set between the second compressor 21 and air accumulator
Roots blower is equipped with, for air blast.Roots blower can also be optionally set on other gas flow pipe roads, for carrying
High gas flow efficiency, this is that those skilled in the art can understand, be will not be repeated here.
In a kind of preferred embodiment, extracting device of oil 30 also includes producing well 33, and producing well 33 is used to produce fluid
Matter, and the outlet of producing well 33 is connected with waste-heat recovery device 31.Largely and stably crude oil can be produced using producing well 33 to drive
Stream material during dynamic.Producing well 33 can have multiple, be distributed in around gas injection well 22, using stream material.
Preferably, above-mentioned fire flood system also includes automatic control unit, automatic control unit respectively with oxygenerator
10th, gas injection device 20, extracting device of oil 30, TRT 40 and carbon dioxide recovering apparatus 50 electrically connect.It can so control
The production technology of each part, coordinate control whole process.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
Fire flood system provided by the invention uses the technology of unique efficient energy-conservation, more preferably by modular
Design, without air pollution emission and carbon emission, without sewage discharge, does not also pollute stratum, is current more environmental protection and energy saving
Production technique, it can adapt to most oil reservoirs, various crude oil production demands.In practical application scene, the fire flood
System goes for thickened oil recovery, adopts excess oil exploitation or replace ternary drive, polymer flooding, steam drive, carbon dioxide flooding etc. to adopt
Oily technique, the oily area that can not be typically produced suitable for other technologies.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. energy-efficient low stain strength fire flood system, it is characterised in that including：Oxygenerator (10), for providing oxygen；Gas injection device (20), it is connected with the oxygenerator (10), burns oil reservoir simultaneously for injecting oxygen into oil reservoir to light Drive crude oil flow；Extracting device of oil (30), for producing the stream material during crude oil drives, the extracting device of oil (30) is also included sequentially The waste-heat recovery device (31) and separator (32) of connection, the waste-heat recovery device (31) are used to reclaim the stream material Waste heat, the separator (32) is used to separate crude oil, carbon dioxide and the water in the stream material after waste heat recovery；TRT (40), it is connected with the waste-heat recovery device (31), by the remaining of the waste-heat recovery device (31) recovery Heat is used to generate electricity, and the TRT (40) electrically connects the energy needed to provide in oxygen preparation with the oxygenerator (10) Amount；AndCarbon dioxide recovering apparatus (50), it is connected with the separator (32), for reclaiming the carbon dioxide.
- 2. fire flood system according to claim 1, it is characterised in that the separator (32) includes：Gas-liquid separator (321), it is connected with the waste-heat recovery device (31), and the gas-liquid separator (321) is provided with gas Mutually outlet and liquid-phase outlet, the gaseous phase outlet are connected with the carbon dioxide recovering apparatus (50)；Oil water separator (322), is connected with the liquid-phase outlet, and the oil water separator (322) be provided with crude exports and Aqueous phase exports.
- 3. fire flood system according to claim 2, it is characterised in that carbon dioxide recovering apparatus (50) bag Include：Desulfurizer (51), is connected with the gaseous phase outlet, and the gas for being discharged to the gaseous phase outlet carries out desulfurization process；Compression condensation device (52), the compression condensation device (52) are connected with the desulfurizer (51), and the compression is cold Solidifying device (52) is additionally provided with carbon dioxide gas outlet and CONDENSATE OIL AND GAS outlet；AndFirst compression set (53), is connected with the carbon dioxide gas outlet, for the carbon dioxide gas outlet to be arranged The carbon dioxide liquefaction gone out.
- 4. the fire flood system according to Claims 2 or 3, it is characterised in that the waste-heat recovery device (31) is to change Hot device, the heat exchanger are provided with thermal material import, material outlet to be changed, cooling medium inlet and cooling medium to be changed and gone out Mouthful, the thermal material import to be changed is used to be passed through the stream material.
- 5. fire flood system according to claim 4, it is characterised in that the TRT (40) includes：Generating working medium feeding mechanism (41), for supplying generating working medium, and the outlet of the generating working medium feeding mechanism (41) with The cooling medium inlet is connected；Generator (42), generating working medium entrance is provided with, the generating working medium entrance is connected with cooling medium outlet, and institute Generator (42) is stated to electrically connect with the oxygenerator (10).
- 6. fire flood system according to claim 5, it is characterised in that the carbon dioxide recovering apparatus (50) includes Desulfurizer (51), compression condensation device (52) and the first compression set (53), the desulfurizer (51) and the gas phase Outlet be connected, for the gaseous phase outlet discharge gas progress desulfurization process, the compression condensation device (52) with it is described Desulfurizer (51) is connected, and the compression condensation device (52) is additionally provided with carbon dioxide gas outlet and CONDENSATE OIL AND GAS goes out Mouthful, first compression set (53) is connected with the carbon dioxide gas outlet, for by the carbon dioxide gas outlet The carbon dioxide liquefaction of discharge；The TRT (40) also includes heating unit (43), and the heating unit (43) sets Put on the pipeline between cooling medium outlet and the generating working medium entrance, the heating unit (43) is provided with fuel Import, the fuel inlet are connected with CONDENSATE OIL AND GAS outlet.
- 7. fire flood system according to claim 6, it is characterised in that the heating unit (43) is additionally provided with burning Exhanst gas outlet；The compression condensation device (52) is additionally provided with combustion product gases import, the combustion product gases import and the burning Exhanst gas outlet is connected.
- 8. fire flood system according to claim 3, it is characterised in that first compression set (53) is additionally provided with Fixed gas exports, and the fixed gas outlet is connected with the gas injection device (20), for by first compression set (53) Caused fixed gas injects the oil reservoir.
- 9. fire flood system according to any one of claim 1 to 3, it is characterised in that the gas injection device (20) Including：Second compressor (21), it is connected with the oxygenerator (10), for compressing the oxygen；Gas injection well (22), the import of the gas injection well (22) are connected with second compressor (21), for by the institute after compression Oxygen is stated to be injected into oil reservoir；AndIgniter (23), the igniter (23) are used to light the burning oil reservoir.
- 10. fire flood system according to any one of claim 1 to 3, it is characterised in that the extracting device of oil (30) Also include producing well (33), the producing well (33) is used to producing the stream material, and the outlet of the producing well (33) with The waste-heat recovery device (31) is connected.
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| CN201710884957.0A CN107542442A (en) | 2017-09-26 | 2017-09-26 | A kind of energy-efficient low stain strength fire flood system |
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| CN201710884957.0A CN107542442A (en) | 2017-09-26 | 2017-09-26 | A kind of energy-efficient low stain strength fire flood system |
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