CN108251093A - The preparation system and method for a kind of supercritical fluid for heavy crude heat extraction - Google Patents
The preparation system and method for a kind of supercritical fluid for heavy crude heat extraction Download PDFInfo
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- CN108251093A CN108251093A CN201810097831.3A CN201810097831A CN108251093A CN 108251093 A CN108251093 A CN 108251093A CN 201810097831 A CN201810097831 A CN 201810097831A CN 108251093 A CN108251093 A CN 108251093A
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- 239000012530 fluid Substances 0.000 title claims abstract description 65
- 238000000605 extraction Methods 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 239000007800 oxidant agent Substances 0.000 claims abstract description 30
- 230000001590 oxidative effect Effects 0.000 claims abstract description 30
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 230000035479 physiological effects, processes and functions Effects 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 9
- 239000003129 oil well Substances 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical group O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 34
- 239000010779 crude oil Substances 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000010612 desalination reaction Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000013535 sea water Substances 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
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- 238000006073 displacement reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000009284 supercritical water oxidation Methods 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
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- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/592—Compositions used in combination with generated heat, e.g. by steam injection
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
The present invention relates to a kind of preparation systems and method of the supercritical fluid for heavy crude heat extraction, including stirred tank, raw material high-pressure plunger pump, oxidant pressue device, heat exchanger, heater, supercritical reaction device and solid-liquid separator, it is sequentially connected by conveyance conduit.Oil field extracted water and crude oil are mixed in a certain ratio by present system, it is reacted in overcritical water oxidization reactor, it obtains for the supercritical fluid of deep-well heavy crude heat extraction, avoid restriction of traditional heavy crude heat extraction in the process to the dependence and produced water treatment of external energy etc., it realizes harmless treatment and the recycling of oil field extracted water, while also the physiology waste liquid that oil recovery personnel generate can be synchronized improvement.For offshore drilling platform, requirement and dependence to sea water desalination can be also reduced.
Description
Technical field
The present invention relates to energy extractions and field of environment protection, and in particular to a kind of supercritical fluid for heavy crude heat extraction
Preparation system and method.
Background technology
Energy shortage is the major issue that countries in the world face at present.With the continuous exploitation of conventional crude, reserves and
Yield is successively decreased year by year, for the thin oil resource only remaining 1700 × 10 of exploitation8T, and the explored viscous crude resource reserve in the whole world surpasses
Cross 3000 × 108t.Cost is reduced, viscous crude, super heavy oil recovery are come out to the maximum extent, is that world today oil interface is faced
Common issue.
Colloid and bitumen content in viscous crude (also referred to as heavy oil) is more, and light components are few, and with colloid and bitumen content
Increase, the relative density and viscosity of viscous crude also increase, thus high viscosity, big density as viscous crude be different from conventional lightweight original
The leading indicator of oil, this also leads to the problems such as flow resistance is big, and production efficiency is low in recovery process.Due to sticking for viscous crude
Degree is strong to the sensibility of temperature, as temperature increase drastically declines, so both at home and abroad all using steam injection heating exploitation as viscous crude
The major way of exploitation.Heating exploitation technology refers to the theory and method with Pyrology, reduces ground by being heated to oil reservoir
Viscosity, dissolving and the blocking of thawing oil reservoir of lower crude oil, the Penetration Signature for improving stratum, so as to improve crude oil oozing on stratum
Saturating ability reaches and improves crude output, acquisition rate and the DP technology technology for exploiting benefit purpose.Dominant mechanism is：
(1) thick mechanism drops in heating, i.e. underground crude oil is heated up rear viscosity and declines to a great extent.Temperature is heated in common oil reservoir
In the range of degree, temperature often increases 10 DEG C, and the viscosity of viscous crude can then decline 50%, and the mobility of underground crude oil improves, this is heating power
Recover the oil most important principles of increase yield；
(2) oil reservoir thermoelasticity energy release mechanism of oil displacement.After oil reservoir is heated, rock matrix and fluid in oil reservoir (oil,
Gas and water) expanded by heating and generate elastic displacement of reservoir oil energy；
(3) water vapour to the distillation of viscous crude, cracking, emulsification and generate dilution and mixed phase drive and act on.
Heavy crude heat extraction technology mainly includes steam soak, steam drive, hot water flooding, combustion in situ, electromagnetic heating and thermalization
Method etc..Steam oil production method although have technology relative maturity is simple, construction easily, a small investment, volume increase it is fast
The advantages that, but steam soak is often only used for the viscous crude of extraction near wellbore zone, there are still a large amount of regions of bypassed oil between well.And with
The increase for round of handling up and the reduction of stratum energy, oil recovery effect tapers off trend, and moisture content increases day by day, oil recovery rate
It is usually no more than 10%.
Supercritical fluid heavy crude heat extraction technology is a kind of efficient thick-oil thermal recovery technology developed in recent years, can be certain
The defects of water vapour thermal recovery technology is made up in degree.[both with larger diffusion coefficient, (it expanded the special nature of supercritical water
Scattered coefficient is 100 times of normality water) number, while there is larger solvability (can arbitrarily compare with arbitrary gas and organic matter
Example is dissolved each other), and when state changes, and the organic matter wherein dissolved can be precipitated], it makes it have as heavy crude heat extraction fluid
Potential advantages.Using supercritical water as heavy crude heat extraction fluid, there is following technical advantage：
(1) thermal efficiency is high.Due to not undergone phase transition during the preparation and use of supercritical water, the thermal efficiency
It is high；
(2) oily thermal recovery is efficient.Because supercritical water both has higher diffusion coefficient, it may have larger solvability
With pressure, the oil being scattered in the layer of sand of underground can effectively be driven, concentrate, therefore thermal recovery is efficient；
(3) structure of reactor is compact, and floor space is small, is particularly suitable for using on drilling platforms on the oil that area is limited.
However, traditional supercritical fluid heavy oil heat production system and method, be limited to overcritical hot fluid generating system and
The problems of method cause total system efficiency low, to the high dependence of the fuel such as diesel oil, crude oil, natural gas, operation cost
It is excessively high.Inorganic salts can be generated by being primarily due to supercritical water oxidation, easily be resulted in blockage to pipeline and equipment.Secondly high temperature
To the seriously corroded problem of equipment and pipeline under high pressure conditions, while heat exchanger tube is difficult to bear to corrode for a long time, and heavy wall can shadow
Heat exchange is rung, and thin-walled can easily fail, and system material be caused to expend excessively high.In addition, what is generated during heavy crude heat extraction is a large amount of
Sanitary wastewater and physiology the waste liquid (excretion that oil extraction waste water (high concentration oily wastewater) and driller generate in daily life
Object), environmental pollution is serious.
Invention content
The purpose of the present invention is being directed to the prior art defect of heavy crude heat extraction, provide a kind of for the overcritical of heavy crude heat extraction
The preparation system and method for fluid, the system and method have the thermal efficiency is high, heavy crude heat extraction is efficient, structure of reactor is compact,
The advantages such as floor space is small, operation cost is low.
To achieve the above object, technical solution provided by the invention is：
The preparation system of a kind of supercritical fluid for heavy crude heat extraction, including heat exchanger, oxidant stress pump, heating
Device, raw material high-pressure plunger pump, supercritical reaction device, solid-liquid separator and solid collector, are sequentially connected by conveyance conduit；
Water, extraction oil and physiology waste liquid enter supercritical reaction device by heat exchanger and heater, and oxidant is pressurizeed by oxidant and filled
It puts into supercritical reaction device, mixing is reacted；Raw material high-pressure plunger pump is equipped with before or after heat exchanger, it is described to change
The thermal medium outlet of hot device is connected by pipeline with oil well injection device；Separation of solid and liquid is connected after the supercritical reaction device
Device and solid collector, the solid collector connection cleaning water lines；The solid-liquid separator supercritical fluid outlet and
The supercritical water fluid entrance connection of heat exchanger, the cold fluid with entering heat exchanger form waste heat recovery.
Further, stirred tank is further included, the water, extraction oil and physiology waste liquid add in stirred tank, through raw material high-pressure column
Plug pump enters heat exchanger.
Further, the heat exchanger includes heat exchanger A and heat exchanger B, the supercritical fluid outlet and heat exchange of heat exchanger B
The supercritical fluid import connection of device A；Water, extraction oil and physiology waste liquid are passed through centrifugal pump, and connect the heat exchanger A；Oxidation
Agent is passed through oxidant stress pump or compressor, and connects the heat exchanger B.
Supercritical reaction device is overcritical water oxidization reactor, and the solid-liquid separator is high pressure spinning liquid solid-liquid separator.
The overcritical water oxidization reactor is autoclave supercritical reaction device, tubular type supercritical reaction device or other forms
Supercritical reaction device.
If the oxidant is gaseous state, the oxidant pressue device uses compressor；If the oxidant is liquid, institute
Oxidant pressue device is stated using high-pressure pump.
Further, the oil well injection device is connected in side by pipeline with supercritical reaction device, is made overcritical
The supercritical water fluid injection oilbearing stratum that reactor generates.
The physiology waste liquid is the life of drilling well recovered water or drilling well recovered water and drilling well staff, physiological liquid it is mixed
Close liquid.
The oxidant is liquid oxygen, air, KClO3Solution, NaClO, KMnO4、FeMnO4Or H2O2。
Since the mixture of drilling well recovered water and crude oil (highly concentrated oil-bearing wastewater) can be released in supercritical water oxidation process
A large amount of heat, and untreated mixture requires heat to necessary temperature, it is high using the high temperature for coming out supercritical reaction device
Pressure supercritical fluid carries out heat exchange with pending cold fluid can efficiently reduce the energy consumption of process.If have in mixed liquor
The content of machine object (including crude oil and physiology waste liquid) reaches certain numerical value, and react the heat of releasing makes cold night temperature rise enough
To reaction temperature, it can stop heating at this time, realize the self-operating of system.
In addition, as a further improvement on the present invention, also heat exchanger can be saved, only in the water for entering supercritical reaction device
In directly add a small amount of commercial weight, make the temperature for leaving the supercritical fluid of reactor reach after the temperature of heavy crude heat extraction directly into
Enter injection well for heavy crude heat extraction.And enter supercritical reaction device before needed for heat can by heating unit (electric heater or
Oil burning installation) it provides.
Compared with prior art, the beneficial effects of the invention are as follows：
Present system is by oil field extracted water and crude oil (including the physiology waste liquid that oil recovery worker generates, such as sanitary wastewater, row
Let out object etc.) it is mixed in a certain ratio, it is reacted, is obtained for deep-well heavy crude heat extraction in overcritical water oxidization reactor
Supercritical fluid avoids restriction of traditional heavy crude heat extraction in the process to the dependence and produced water treatment of external energy etc., realizes
The harmless treatment of oil field extracted water and recycling, while the physiology waste liquid that oil recovery personnel generate can also be synchronized
It administers.For offshore drilling platform, requirement and dependence to sea water desalination can be also reduced.
Description of the drawings
Fig. 1：The structure diagram one of the preparation system of the supercritical fluid for heavy crude heat extraction of the present invention.
Fig. 2：The structure diagram two of the preparation system of the supercritical fluid for heavy crude heat extraction of the present invention.
Wherein：The first valves of 1-, the second valves of 2-, 3- third valves, the 4th valves of 4-, the 5th valves of 5-, the 6th valves of 6-
Door, the 7th valves of 7-, the 8th valves (attached drawing 1) of 8-.
The 9th valves of 9-, the tenth valves of 10-, the 11st valves of 11-, the 12nd valves of 12-, the 13rd valve (attached drawings of 13-
2)。
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1
Referring to attached drawing 1, a kind of supercritical fluid for heavy crude heat extraction prepares system, including stirred tank, raw material high-pressure column
Pump, oxidant pressue device, heat exchanger, heater, supercritical reaction device and high pressure cyclone hydraulic separators are filled in, passes through conveyance conduit
It is sequentially connected, the supercritical fluid outlet of high pressure cyclone hydraulic separators is connected with the supercritical fluid entrance of heat exchanger, is changed with entering
The cold fluid of hot device forms waste heat recovery；Oxidant stress pump is connected by pipeline with supercritical reaction device；Exchanger heat medium
Outlet is connected by pipeline with oil well injection device.Its operating method includes the following steps：
1) the first valve is opened, the second valve, third valve, the 4th valve, the 5th valve are closed, before the first valve
All devices and pipe full clear water, using the method for static state heating, its temperature is made to rise to 375~450 DEG C, pressure is more than
23MPa；
2) the 5th valve is opened, is recycled in systems using the water pumping of raw material high-pressure plunger, makes the temperature and pressure of whole system
Power reaches setting value；
3) clear water is switched to drilling well recovered water, opens simultaneously the second valve, using stirred tank by a certain proportion of drilling well
Recovered water is uniformly mixed with crude oil；
4) liquid injection system will be mixed using raw material high-pressure plunger pump, while starts oxidant pressue device, and open the 6th
Valve injects oxidant in supercritical reaction device, it is made to carry out oxidation reaction with mixed liquor；
5) according to the pressure and temperature in supercritical reaction device, mixed liquor and the oxidation entered in supercritical reaction device is adjusted
The flow of agent ensures that residence time of the two in reactor is 30~300s, makes the organic matter in mixed liquor completing oxidation
Into inorganic salts, water and CO2, while release heat；
6) the high temperature and pressure supercritical water fluid from supercritical reaction device out is entered into high pressure cyclone hydraulic separators, by it
In inorganic salts detach in the supercritical state, open the 8th valve discharge and recycle；
7) the high temperature and pressure supercritical water fluid come out from high pressure cyclone hydraulic separators is entered into heat exchanger, is carried out with cold fluid
It exchanges heat, after the condition for reaching setting, i.e., into injection well, for heavy crude heat extraction；
8) after the high temperature and pressure supercritical water fluid preheating that cold fluid comes out through high pressure cyclone hydraulic separators, according to actual conditions
It is further heated using heater, after the temperature and pressure for reaching setting, into supercritical reaction device, repeated above-mentioned
Reaction process.
Wherein, the water in step 3) after switching is drilling well recovered water or drilling well recovered water and the life of drilling well staff
Living, physiology waste liquid mixed liquor.
Oxidant in step 4) is liquid oxygen, air, KClO3Solution, NaClO, KMnO4、FeMnO4Or H2O2。
Embodiment 2
Referring to attached drawing 2, a kind of supercritical fluid for heavy crude heat extraction prepares system, including centrifugal pump, heat exchanger A, column
It fills in pump, heater, supercritical reaction device, return liquid/gas separator etc., be sequentially connected by conveyance conduit；The super of solid-liquid separator faces
Boundary's fluid outlet is connect with the supercritical fluid entrance of heat exchanger B；The supercritical fluid outlet of heat exchanger B is super with heat exchanger A's
Critical fluids import connects；The oxidant outlet of heat exchanger B is connect with the oxidant inlet of supercritical reaction device；Heat exchanger A's
Supercritical fluid outlet is connect with the supercritical fluid entrance of injection well.Its operating method includes the following steps：
(1) the 9th valve is opened, closes the tenth valve of valve, the 11st valve, the 12nd valve, the 13rd valve, it will
All devices after the 9th valve of valve and pipe full clear water, using the method for static state heating, make its temperature rise to 375~
450 DEG C, pressure is more than 23MPa；
(2) open the 13rd valve, using raw material high-pressure plunger water pumping recycle in systems, make whole system temperature and
Pressure reaches setting value；
(3) clear water is switched to drilling well recovered water, will mixes liquid injection system using raw material high-pressure plunger pump, and start simultaneously
Oxidant pressue device (pump or compressor), opens the 13rd valve, and the high temperature and pressure come out from solid-liquid separator is overcritical
Aqueous fluid enters heat exchanger B, exchanges heat with oxidant；The 12nd valve is opened, the oxidant injection after heating is overcritical
In reactor, it is made to carry out oxidation reaction with mixed liquor；
(4) according to the pressure and temperature in supercritical reaction device, the mixed liquor and oxygen entered in supercritical reaction device is adjusted
The flow of agent ensures that residence time of the two in reactor is 30~300s, makes the organic matter in mixed liquor completing oxygen
It is melted into inorganic salts, water and CO2, while release heat；
(5) the high temperature and pressure supercritical water fluid from supercritical reaction device out is entered into solid-liquid separator, it will wherein
Inorganic salts detach in the supercritical state, open the 11st valve be expelled to solid collector, handled or recycled profit
With；
(6) heat exchanger A will be entered from the supercritical fluid of heat exchanger B ultrasound critical fluids outlet discharge, it is made to be changed with entering
The mixed liquor of hot device A exchanges heat, and mixed liquor is heated, and is discharged from the supercritical fluid outlet of heat exchanger A overcritical
Fluid enters injection well, realizes heavy crude heat extraction；
(7) it from the mixed liquor after the heat exchange that heat exchanger A comes out, after plunger pump pressurizes, into heater, further heats
Enter reactor after to supercriticality, reacted with oxidant, make the organic matter completion in mixed liquor being oxidized to inorganic
Salt, water and CO2, while heat is released, mixed liquor is made to become supercritical fluid；Repeat above-mentioned reaction process；
(8) according to the technological requirement of heavy crude heat extraction, heat exchange can be adjusted by adjusting the mixed proportion of oil and water in mixed liquor
The temperature of device A exits supercritical fluid, and heat exchanger A exits supercritical fluid is adjusted by the pressure that pilot plunger pumps
Pressure, realize the efficient thermal process of viscous crude.
The above is only presently preferred embodiments of the present invention, not makees limitation in any form to the present invention, any ripe
Professional and technical personnel is known, without departing from the scope of the present invention, technical spirit according to the present invention, to more than
Any simple modification, equivalent replacement and improvement that embodiment is made etc. still falls within the protection domain of technical solution of the present invention
Within.
Claims (9)
1. a kind of preparation system of supercritical fluid for heavy crude heat extraction, it is characterised in that：Including heat exchanger, oxidant stress
Pump, heater, raw material high-pressure plunger pump, supercritical reaction device, solid-liquid separator and solid collector, by conveyance conduit successively
Connection；Water, extraction oil and physiology waste liquid enter supercritical reaction device by heat exchanger and heater, and oxidant is added by oxidant
Pressure device enters supercritical reaction device, and mixing is reacted；Raw material high-pressure plunger pump is equipped with before or after heat exchanger, it is described
The thermal medium outlet of heat exchanger is connected by pipeline with oil well injection device；Separation of solid and liquid is connected after the supercritical reaction device
Device and solid collector, the solid collector connection cleaning water lines；The solid-liquid separator supercritical fluid outlet and
The supercritical water fluid entrance connection of heat exchanger, the cold fluid with entering heat exchanger form waste heat recovery.
2. the preparation system of the supercritical fluid according to claim 1 for heavy crude heat extraction, it is characterised in that：It further includes
Stirred tank, the water, extraction oil and physiology waste liquid add in stirred tank, enter heat exchanger through raw material high-pressure plunger pump.
3. the preparation system of the supercritical fluid according to claim 1 for heavy crude heat extraction, it is characterised in that：It is described to change
Hot device includes heat exchanger A and heat exchanger B, and the supercritical fluid outlet and the supercritical fluid import of heat exchanger A of heat exchanger B connect
It connects；Water, extraction oil and physiology waste liquid are passed through centrifugal pump, and connect the heat exchanger A；Oxidant is passed through oxidant stress pump or pressure
Contracting machine, and connect the heat exchanger B.
4. the preparation system of the supercritical fluid according to claim 1 for heavy crude heat extraction, it is characterised in that：It is described super
Critical reaction device is overcritical water oxidization reactor, and the solid-liquid separator is high pressure spinning liquid solid-liquid separator.
5. the preparation system of the supercritical fluid according to claim 4 for heavy crude heat extraction, it is characterised in that：Described
Overcritical water oxidization reactor is the supercritical reaction of autoclave supercritical reaction device, tubular type supercritical reaction device or other forms
Device.
6. the preparation system of the supercritical fluid according to claim 1 for heavy crude heat extraction, it is characterised in that：It is if described
Oxidant is gaseous state, and the oxidant pressue device uses compressor；If the oxidant is liquid, the oxidant pressurization dress
It puts using high-pressure pump.
7. the preparation system of the supercritical fluid according to claim 1 for heavy crude heat extraction, it is characterised in that：Described
Oil well injection device is connected in side by pipeline with supercritical reaction device, the supercritical water fluid for generating supercritical reaction device
Inject oilbearing stratum.
8. the preparation system of the supercritical fluid according to claim 1 for heavy crude heat extraction, it is characterised in that：The life
Waste liquid is managed as drilling well recovered water or drilling well recovered water and the life of drilling well staff, the mixed liquor of physiological liquid.
9. the preparation system of the supercritical fluid according to claim 1 for heavy crude heat extraction, it is characterised in that：The oxygen
Agent is liquid oxygen, air, KClO3Solution, NaClO, KMnO4、FeMnO4Or H2O2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810097831.3A CN108251093A (en) | 2018-01-31 | 2018-01-31 | The preparation system and method for a kind of supercritical fluid for heavy crude heat extraction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810097831.3A CN108251093A (en) | 2018-01-31 | 2018-01-31 | The preparation system and method for a kind of supercritical fluid for heavy crude heat extraction |
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| CN108251093A true CN108251093A (en) | 2018-07-06 |
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| CN201810097831.3A Pending CN108251093A (en) | 2018-01-31 | 2018-01-31 | The preparation system and method for a kind of supercritical fluid for heavy crude heat extraction |
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