CN110344812A - The overcritical multi-functional mid-deep strata oil field reinjection well of hydro-thermal - Google Patents
The overcritical multi-functional mid-deep strata oil field reinjection well of hydro-thermal Download PDFInfo
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- CN110344812A CN110344812A CN201910543276.7A CN201910543276A CN110344812A CN 110344812 A CN110344812 A CN 110344812A CN 201910543276 A CN201910543276 A CN 201910543276A CN 110344812 A CN110344812 A CN 110344812A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 137
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- 239000003345 natural gas Substances 0.000 description 3
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
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- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/40—Separation associated with re-injection of separated materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention relates to a kind of overcritical multi-functional mid-deep strata oil field reinjection wells of hydro-thermal.It solves existing mid-deep strata oil field reinjection well and designs the technical problems such as not reasonable.Including outer well tube, it slides inwardly in outer well tube week and is equipped with liftable well inner tube, liftable well upper end of inner tube is connected with inner tube well head apparatus for controlling of lifting, liftable well upper end of inner tube is connected by heat exchange heating apparatus with filtration, purification/gas fractionation unit, filtration, purification/gas fractionation unit is connected with sewage water filling oxygenation refuelling wellhead assembly, sewage water filling oxygenation refuelling wellhead assembly is connected between outer well tube and liftable well inner tube, and heat exchange heating apparatus is connected with the thermo-electric generation cooling device being connected between outer well tube and liftable well inner tube.Advantage is: there are three functions for tool: the dirty water decontamination handles efficiency, and plasma blocks function, hot water heating/generating function to the bombardment neutralizing borehole wall of well tubular wall.
Description
Technical field
The invention belongs to heat-pump apparatus technical fields, and in particular to a kind of overcritical multi-functional mid-deep strata oil field re-injection of hydro-thermal
Well.
Background technique
Petroleum recovering industry currently mostly uses greatly the petroleum by being gone in pushing tow underground rock stratum crack to reinjection well water filling, makes
From producing well converge and ground is extracted by producing well, then by heating heating carry out water-oil separating, purification etc. operations.Separation
After sewage after the completion carries out purified treatment again, and reinjection well is sent to by circulating pump and is carried out in pushing tow underground rock stratum crack again
Petroleum.Moving in circles year in year out for this process, has the following problems, first, the oil water mixture of underground extraction needs additional
Heat source carry out a series of water-oil separatings purification operation conveying to be heated to 45 DEG C or so.Second, after water-oil separating
Sewage needs to carry out the wastewater treatment operations of deep purifying filtering etc, needs to expend a large amount of power source.Third is passed through
Purified sewage forms solid in reinjection well and blocks substance, lead to re-injection because still containing inorganic ion material composition
Well re-injection pressure is up to 10~30MPa, and energy consumption high flow capacity is small.
Of the existing technology in order to solve the problems, such as, people have carried out long-term exploration, propose various solutions
Scheme, for example, Chinese patent literature disclose a kind of ground water-oil separating single-well injection-production system [application number:
201710413693.0]: the sucker rod that downhole system is arranged is hollow rod, and ground system is arranged and includes and oil pipe four-way
Port connection hydrocyclone；And one end of hydrocyclone is connected to hollow rod.It is revolved as a result, by ground waterpower
It flows device and Produced Liquid is subjected to water-oil separating, the water isolated then is recycled into target zone by hollow rod.Above scheme
The problem of being easy to happen blocking when although alleviating oil field re-injection to a certain extent, the program is mainly heavy using physics
Blocking when drop mode prevents re-injection is easy to produce solid blocking substance still without deduction solution for reinjected water, meanwhile,
The program still remains: needing additional heat source to carry out water-oil separating purification and transmission process.
Summary of the invention
Regarding the issue above, the present invention provides a kind of multi-functional mid-deep strata oil field re-injection of overcritical hydro-thermal
Well.
In order to achieve the above objectives, present invention employs following technical proposals: this overcritical multi-functional mid-deep strata oil field of hydro-thermal
Reinjection well, including outer well tube, which is characterized in that it slides inwardly in the outer well tube week and is equipped with liftable well inner tube, it is described
Liftable well upper end of inner tube be connected with can drive liftable well inner tube along outer well tube vertical lifting inner tube well head lifting control
Device processed, the liftable well upper end of inner tube is connected by heat exchange heating apparatus with filtration, purification/gas fractionation unit, and institute
Filtration, purification/the gas fractionation unit stated is connected with sewage water filling oxygenation refuelling wellhead assembly, and the sewage water filling adds
It is connected between oxygen refuelling wellhead assembly and outer well tube and liftable well inner tube, the heat exchange heating apparatus is connected with and outer well
The thermo-electric generation cooling device being connected between pipe and liftable well inner tube.
In the above-mentioned multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal, the outer well tube includes that at least one is perpendicular
The non-infiltration well casing being directly arranged, the non-infiltration well casing upper end is by sealing pressure-resistant wellhead assembly closing, the non-infiltration
Well casing lower end is coaxially connected at least one permeable well casing being vertically arranged, and is located at the permeable well casing lower end closed of bottom.
In the above-mentioned multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal, the liftable well inner tube includes wearing
In the outer well tube upper end week heat-insulated inner tube of upper section inwardly, the heat-insulated upper end of inner tube of the upper section is arranged in the pressure-resistant well head dress of sealing
It sets and is kept the temperature beyond being located to be equipped at the well head of outer well tube upper end in the heat-insulated upper end of inner tube outer circumferential of upper section on the outside of outer well tube upper end
Structure, the heat-insulated inner tube lower end of upper section be coaxially connected be connected with the heat-insulated inner tube of upper section and extend to outer well tube lower end lower section it is non-
Heat-insulated inner tube, and the heat-insulated inner tube outer circumferential of upper section and/or lower section non-insulated inner tube week is circumferential with outer well tube inwardly
Pipe holder is equipped between inside, it is soft that the heat-insulated upper end of inner tube of the upper section is connected with the metal being connected with the heat-insulated inner tube of upper section
Pipe, the lower section non-insulated inner tube lower end outer circumferential and outer well tube week inwardly between be movably equipped with lifting electric heating
Device.
In the above-mentioned multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal, the inner tube well head apparatus for controlling of lifting
Derrick, the well casing are supported including the heat-insulated upper end of inner tube of upper section is arranged in and is located at the well casing sealed above pressure-resistant wellhead assembly
Derrick upper end is supported to be equipped with the driving of well movement of inner pipe and hot water pipeline output connector, and the metal hose and well inner tube
Movement driving is connected with hot water pipeline output connector, and the well casing support derrick is equipped with and lifting electric heater phase
Electric heater apparatus for controlling of lifting even.
In the above-mentioned multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal, the sewage fills the water oxygenation refuelling well
Mouth device includes the effluent cycle water inlet pipe being connected with filtration, purification/gas fractionation unit, the effluent cycle water inlet
Pipe is connected with conditioner, feed(raw material)inlet pipe is connected on conditioner, and the conditioner passes through sewage force (forcing) pump and outlet
Waterpipe is connected, and the sewage force (forcing) pump is equipped with sewage force (forcing) pump variable-frequency governor, and the outlet water conduits are worn
Set on outer well tube week inwardly between liftable well inner tube outer circumferential.
In the above-mentioned multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal, the sewage fills the water oxygenation refuelling well
Mouth device further includes an air inlet duct, and the air inlet duct passes through air compressor and compressed air snorkel phase
Even, and the compressed air snorkel is arranged in and between liftable well inner tube outer circumferential and extends inwardly in outer well tube week
To at lifting electric heater.
In the above-mentioned multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal, the well head heat exchange heat transfer apparatus includes
The high-temperature heat-exchanging being connected with metal hose, the high-temperature heat-exchanging pass through high-temperature heat supply coil circuit and mid temperature heat exchanger phase
Even, and the mid temperature heat exchanger is connected with medium temperature heat supplying loop, and the mid temperature heat exchanger is separated with filtration, purification/gas
Device is connected.
In the above-mentioned multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal, the well head heat exchange heat transfer apparatus is also wrapped
The cryogenic heat exchanger being connected by working medium circulation water lines with high-temperature heat-exchanging is included, is followed in working medium circulation water lines equipped with working medium
Ring pump, the cryogenic heat exchanger are equipped with exhaust valve, are connected with low-temperature heating circuit on the cryogenic heat exchanger, and described
Low-temperature heating circuit be equipped with low-temperature heating circuit circulating pump.
In the above-mentioned multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal, the filtration, purification/gas separation dress
The water purification filter including being connected with mid temperature heat exchanger is set, the water purification filter upper end is separated equipped with incoagulable gas
Device, lower end be equipped with pulp separator, the water purification filter by water purification circulating pump respectively with water purification outlet pipe and water purification
Recirculation pipe is connected, and the water purification recirculation pipe is connected with effluent cycle water inlet pipe.
In the above-mentioned multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal, the thermo-electric generation cooling device includes
The electrification component with hot end heat exchanger and cool end heat exchanger in working medium circulation water lines, the hot end heat exchanger are set
It is connected with working medium circulation water lines, the cool end heat exchanger is connected by cold end circulating line with cold end cooling tower, cold
Circulating line is held to be equipped with cold end circulating pump, the electrification component is connected with electric power and send inversion electrical control cabinet, and the electricity
Power send inversion electrical control cabinet to be connected respectively with heating current supply circuit with external mains-supplied circuit, and the heating current supply circuit
It is connected with lifting electric heater.
Compared with prior art, when a certain depth point for having the advantage that underground when the invention works forms super face
Boundary's hydro-thermal state circulates to super containing organic matter/oil/natural gas water and faces when air is added in the pressure (hydraulic) water in well head
When battery limit (BL) domain, because electric heater is heated to 450 DEG C, that is, hydro-thermal smouldering combustion process takes place.In subsequent process
In because inner pipe wall conductive force, the high-temperature plasma on the inside of relatively cryogen and inner tube on the outside of inner tube, which exchanges heat, to be heated
Electric heating can be stopped by forming sustained response process.There are three functions for present invention tool: the dirty water decontamination handles efficiency, plasma pair
The bombardment neutralizing borehole wall of well tubular wall blocks function, hot water heating/generating function.The present invention is used for oil field reinjection well, no matter in-service
Or discarded well may be by power generation and heat supply, be with a wide range of applications.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is partial structural diagram of the invention；
Fig. 3 is enlarged drawing at A-A in Fig. 1；
Fig. 4 is enlarged drawing at B-B in Fig. 1；
In figure, outer well tube 1, sealing pressure resistance wellhead assembly 11, one open non-infiltration well casing 12, two and open non-infiltration well casing 13, two
Open or three open permeable well casing 14, liftable well inner tube 2, the heat-insulated inner tube 21 of upper section, lower section non-insulated inner tube 22, pipe holder 23,
Lifting electric heater 24, metal hose 25, inner tube well head apparatus for controlling of lifting 3, the driving of well movement of inner pipe are defeated with hot water pipeline
Attachment device 31, well casing support derrick 32, electric heater apparatus for controlling of lifting 33, sewage fill the water oxygenation refuelling wellhead assembly out
4, effluent cycle water inlet pipe 41, conditioner 42, sewage force (forcing) pump 43, variable-frequency governor 44, outlet water conduits 45, feed(raw material)inlet
Pipe 46, air inlet duct 47, air compressor 48, compressed air snorkel 49, heat exchange heating apparatus 5, high-temperature heat-exchanging 51, in
Warm heat exchanger 52, cryogenic heat exchanger 53, low-temperature heating circuit circulating pump 54, low-temperature heating circuit 55, working medium circulation water lines 56,
Exhaust valve 57, working medium circulating pump 58, medium temperature heat supplying loop 59, high-temperature heat supply coil circuit 510, filtration, purification/gas separation dress
Set 6, water purification filter 61, non-condensable gas purger 62, go out pulp separator 63, water purification circulating pump 64, water purification outlet pipe 65,
Water purification recirculation pipe 66, thermo-electric generation cooling device 7, electrification component 71, hot end heat exchanger 71a, cool end heat exchanger 71b, cold end
Circulating line 72, cold end circulating pump 73, cold end cooling tower 74, heating current supply circuit 75, electric power send inversion electrical control cabinet 76, external
Mains-supplied circuit 77.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As shown in Figs 1-4, this overcritical multi-functional mid-deep strata oil field reinjection well of hydro-thermal, including outer well tube 1, outer well tube 1 week
Inside Slideslip is equipped with liftable well inner tube 2,2 upper end of liftable well inner tube be connected with can drive liftable well inner tube 2 along
The inner tube well head apparatus for controlling of lifting 3 of 1 vertical lifting of outer well tube, 2 upper end of liftable well inner tube pass through heat exchange heating apparatus 5 and mistake
It filters purification/gas fractionation unit 6 to be connected, and filtration, purification/gas fractionation unit 6 and sewage fill the water oxygenation refuelling wellhead assembly
4 are connected, and sewage water filling oxygenation refuelling wellhead assembly 4 is connected between outer well tube 1 and liftable well inner tube 2, and exchange heat heat supply
Device 5 is connected with the thermo-electric generation cooling device 7 being connected between outer well tube 1 and liftable well inner tube 2.A certain depth in underground
Point is spent, i.e., when controlling liftable well 2 position of inner tube by inner tube well head apparatus for controlling of lifting 3, pressure occurs in 25MPa or more, temperature
Degree will form supercritical water Warm status at 450 DEG C or more.When the pressure (hydraulic) water between outer well tube 1 and liftable well inner tube 2
Middle addition air, when circulating containing organic matter/oil/natural gas water to supercritical range, because take place hydro-thermal without
Flame combustion process.In the follow-up process because of the conductive force of 2 tube wall of liftable well inner tube, the outside of liftable well inner tube 2 compared with
The high-temperature plasma heat exchange heating of cryogen and 2 inside of liftable well inner tube, which forms sustained response process, can stop electric adding
Heat.Therefore, there are three functions for this effect tool: the dirty water decontamination handles efficiency, and plasma is stifled to the bombardment neutralizing borehole wall of well tubular wall
Fill in function, hot water heating/generating function.
Wherein, outer well tube 1 here includes at least one non-infiltration well casing being vertically arranged, and non-infiltration well casing upper end passes through
Pressure-resistant wellhead assembly 11 is sealed to close, non-infiltration well casing lower end is coaxially connected at least one permeable well casing being vertically arranged, and
Positioned at the permeable well casing lower end closed of bottom.Sealing pressure-resistant wellhead assembly 11, material is carbon steel, hole diameter 300mm~700mm,
Compressive resistance 20MPa；Here non-infiltration well casing includes one opening non-infiltration well casing 12, and material is petroleum steel pipe, and caliber 300mm~
700mm, compressive resistance 30MPa；If desired two open non-infiltration well casing 13, and material is petroleum steel pipe, and caliber 200mm~
350mm, compressive resistance 30MPa；Two open or three open permeable well casing 14, and material is steel pipe, caliber 150mm~250mm, resistance to pressure
Spend 10MPa.When 1 well depth of outer well tube is usually within the scope of 1500 meters~3000 meters, due to different Geologic Structure Features, often pass through
Crossing prolonged produced-water reinjection causes the borehole wall and rock crack to block seriously, and the re-injection pressure at well head is all in 10MPa or more.
Liftable well inner tube 2 includes being arranged in the heat-insulated inner tube 21 of upper section of 1 upper end week of outer well tube inwardly, and upper section is heat-insulated interior
21 upper end of pipe is arranged in the pressure-resistant wellhead assembly 11 of sealing and beyond 1 upper end of outer well tube outside, in upper section heat-insulated 21 upper end of inner tube week
Outward be located at 1 upper end well head of outer well tube at be equipped with insulation construction, heat-insulated 21 lower end of inner tube of upper section be coaxially connected with and upper section every
Hot inner tube 21 is connected and extends to the lower section non-insulated inner tube 22 of 1 lower end of outer well tube, and heat-insulated 21 outer circumferential of inner tube of upper section
And/or lower section non-insulated inner tube 22 weeks inwardly with outer well tube 1 week inwardly between be equipped with pipe holder 23, the heat-insulated inner tube 21 of upper section
Upper end is connected with the metal hose 25 being connected with the heat-insulated inner tube 21 of upper section, 22 lower end outer circumferential of lower section non-insulated inner tube and outer
Well casing 1 week inwardly between be movably equipped with lifting electric heater 24.
Wherein, the heat-insulated inner tube 21 of upper section, 1000~2500 meters of pipe range, wherein away from 500 mitron section band insulating layer of well head, tubing
Material is stainless steel, caliber 80mm~150mm.Lower section non-insulated inner tube 22,300 meters of pipe range, material is ductile iron pipe, caliber
70mm~100mm, pressure-resistant 1.5MPa, pipe holder 23, material are heatproof stainless steel, and lifting electric heater 24, material is heat-resisting
Zircon ceramic, voltage 36V, power 50KW；25 material of metal hose of top export is stainless steel, pressure-resistant 1.5MPa.This part
Length of tube can carry out 5~8 meters of the line style amplitude of selecting and can also move up and down at random according to the design needs.Also lower section can be made non-
The water under static condition within the scope of heat-insulated 1 meter of 22 bottom terminal ends of inner tube is heated to 450 DEG C by lifting electric heater 24.
Here inner tube well head apparatus for controlling of lifting 3 includes setting in heat-insulated 21 upper end of inner tube of upper section and is located at sealing pressure resistance
The well casing of 11 top of wellhead assembly supports derrick 32, and well casing supports 32 upper end of derrick to be equipped with the driving of well movement of inner pipe and hot water pipeline
Output connector 31, and metal hose 25 and the driving of well movement of inner pipe are connected with hot water pipeline output connector 31, well casing
Support derrick 32 is equipped with the electric heater apparatus for controlling of lifting 33 being connected with lifting electric heater 24.
Wherein, the driving of well movement of inner pipe and hot water pipeline output connector 31, material are composite electric power steel group
Part, well casing support derrick 3-2, and material is compound steel component, electric heater apparatus for controlling of lifting 33, and material is dynamic for composite electric
Power steel component.Its function is mainly the position supported with control liftable well inner tube 2, the lifting control of lifting electric heater 24
System, hot water pipeline output connection, determines the vertical height region of hydro-thermal supercritical reaction, anti-into normal overcritical hydro-thermal burning
Answer and electric heater be promoted to pithead position after state, rise or put down within the necessary duty cycle the heat-insulated inner tube 21 of upper section,
Lower section non-insulated inner tube 22, pipe holder 23 carry out cleaning and maintenance operation.
Here sewage water filling oxygenation refuelling wellhead assembly 4 includes the dirt being connected with filtration, purification/gas fractionation unit 6
Water recirculated water inlet tube 41, effluent cycle water inlet pipe 41 are connected with conditioner 42, are connected with feed(raw material)inlet on conditioner 42
Pipe 46, and conditioner 42 is connected by sewage force (forcing) pump 43 with outlet water conduits 45, and sewage force (forcing) pump 43 is equipped with sewage
43 variable-frequency governor 44 of force (forcing) pump, outlet water conduits 45 be arranged in outer well tube 1 week inwardly with 2 outer circumferential of liftable well inner tube
Between.Preferably, sewage water filling oxygenation refuelling wellhead assembly 4 further includes an air inlet duct 47, and air inlet duct 47 is logical
It crosses air compressor 48 to be connected with compressed air snorkel 49, and compressed air snorkel 49 is arranged in outer well tube 1 week inwardly
Between 2 outer circumferential of liftable well inner tube and extend close at lifting electric heater 24.
Wherein, effluent cycle water inlet pipe 41, material are carbon steel, pressure-resistant 1.5MPa；Conditioner 42, material is carbon steel, resistance to
Press 1.5MPa；Sewage force (forcing) pump 43, material are carbon steel, 10 tons/h~40 ton of pump discharge/h, outlet pressure maximum 20MPa；Sewage
Force (forcing) pump variable-frequency governor 44, voltage 380V；Outlet water conduits 45, material are carbon steel, pressure-resistant 30MPa；Organic matter, material are stone
Oil/coal slurry/biomass/synthesis organic matter/hydro carbons organic matter etc.；Feed(raw material)inlet pipe 46, material are carbon steel, pressure-resistant 0.8MPa；It is empty
Gas inlet tube 47, material are carbon steel, pressure-resistant 0.8MPa；Air compressor 48, material are that compound steel is electric-powered, and pressure is maximum
30MPa；Compressed air snorkel 49, material are carbon steel, caliber 25mm~50mm, pressure-resistant 30MPa.
The method of operation of our department is that effluent cycle water is admitted in conditioner 42 and is passed through by effluent cycle water inlet pipe 41
Organic material that feed(raw material)inlet pipe 46 is sent grind being stirred in conditioner 42, makes its mass ratio 3%
More than, it then pressurizes via sewage force (forcing) pump 43, the calculation formula of moulding pressure is the water of P=25MPa- inner tube bottom position
Static pressure pressure value.After compressed air is also sent to same lower section non-insulated 22 bottom position of inner tube by compressed air snorkel 49,
When the lifting electric heater 24 of starting same position makes temperature herein reach 425 DEG C or more, critical hydro-thermal burning is become
State, in the presence of organic matter and oxygen, which will continue, and hot fluid is non-via the heat-insulated inner tube 21 of upper section, lower section
When heat-insulated inner tube 22 rises and the sewage constantly flowed through is heated to 425 DEG C or more by the heat exchange of inner tube lower section tube wall exchange,
This reaction process will can be gone in the state that no lifting electric heater 24 heats by lasting, and effect is exactly:
1st, main physical and chemical process includes:
A, oxidation reaction mechanism of the entrance containing organic matter: being added O2 in water, and active oxygen and most weak c-H key, which act on, to be produced
Raw free radical HO2., and H2O2 can be generated in the H in HO2. and organic matter, and H2O2 is further decomposed to form hydroxyl HO., HO.
With very high activity, can almost be reacted with all hydrogen-containing compounds.
RH+O2→R.+HO2.
RH+HO2.→R.+H2O2
H2O2→2HO.
RH+HO.→R.+H2O
The free radical R. generated in previous reaction can generate oxyradical ROO. with O2 effect, and the latter simultaneously further obtains
Hydrogen atom generates peroxide:
R.+O2→ROO.
ROO.+RH→ROOH+R.
Peroxide is because very unstable would generally be decomposed into the lesser compound of molecule, until generating formic acid or acetic acid
Deng.Formic acid or acetic acid are finally also converted to CO2 and H2O using free radical ROO. oxidation process.
B, water of the entrance containing organic hydrocarbon compounds have oil/natural gas/coal dust/biomass/industry organic matter/organic waste
Water, water flow 10M3~35M3/h, when organic concentration 2~5%, also output thermal energy outward outside self-heating maintenance system temperature.
The reaction of c, downhole end supercritical water is,
With high diffusibility, the nonpolar solvent of low viscosity, with many organic matters (having pentane, hexane, benzene, toluene etc.) and
Gas (such as oxygen) can arbitrary proportion dissolve each other, form single homogeneous oxidizing system.And inorganic substances, especially salt
Class, solubility is very low, collects after precipitation.Its main feature is that: reaction rate is high, and the reaction time is short (< 1min), oxidation operation
For efficiency up to 99% or more, hydrocarbon can finally be oxidized into CO2 and H2O, and the organic matter of Nitrogen element is oxidized to N2
And the substances such as N2O, chlorine, sulphur, the cycling of elements such as phosphorus are that the form of inorganic salts is deposited from supercritical water.Due to relatively low
Reaction temperature compared with burning, do not have NOx or SO2 formed.
The thermal energy water quality condition of d, well head water outlet include 150~200 DEG C of water temperature, and the object of solid particles containing inorganic salts 5~
10%, contain N2, CO2 gas
The energy transition status of e, well head thermal power generation device include 10~35M3/h of water flow, and the power generation temperature difference 100~
150 DEG C, conversion efficiency of thermoelectric 0.4,400~1200kw of generated output
F, the supply of well head heating power include 130 DEG C/65 DEG C/55 DEG C three grade external heating using transition status.
G, well head water outlet draining water quality condition includes draining through the filtered water outlet of different accuracy filter, sterile nontoxic
Contamination-free meets surface water discharge standard, 30~60 DEG C of water temperature, contains a small amount of CO2/N2 gas.
H, borehole wall regenerative heat exchange energy storage state includes, after hypercritical hydrothermal reaction 24 hours, after switching to non-aqueous Warm status
Heat release 2000~3000kW of power peak, under cold well state, power grid electricity turn heat store 24 hours=3600kw of energy storage power.
2nd, since the continuous action of the overcritical plasma state of water will lead to the dirt of well casing wall surface, including well casing material will
It fluidized state is entered by dissociation cuts down its and peel off, expose crack passage, achieve the purpose that dredge blockage object, and the bottom of inner tube
Wall surface will form inorganic salt crust inside and outside a certain range pipe of end.
Further, heat exchange heating apparatus 5 here includes the high-temperature heat-exchanging 51 being connected with metal hose 25, and high temperature changes
Hot device 51 is connected by high-temperature heat supply coil circuit 510 with mid temperature heat exchanger 52, and mid temperature heat exchanger 52 is connected with medium temperature heat supply
Circuit 59, and mid temperature heat exchanger 52 is connected with filtration, purification/gas fractionation unit 6.Preferably, heat exchange heating apparatus 5 here
It further include the cryogenic heat exchanger 53 being connected by working medium circulation water lines 56 with high-temperature heat-exchanging 51, in working medium circulation water lines 56
It is equipped with working medium circulating pump 58, cryogenic heat exchanger 53 is equipped with exhaust valve 57, and low-temperature heat supply is connected on cryogenic heat exchanger 53 and is returned
Road 55, and low-temperature heating circuit 55 is equipped with low-temperature heating circuit circulating pump 54.
Wherein, high-temperature heat-exchanging 51, material are stainless steel, pressure-resistant 1.5MPa；Mid temperature heat exchanger 52, material are stainless steel,
Pressure-resistant 1.5MPa；Cryogenic heat exchanger 53, material are stainless steel, pressure-resistant 1.5MPa；Low-temperature heating circuit circulating pump 54, heatproof 100
℃；Low-temperature heating circuit 55, material are carbon steel, pressure-resistant 1.5MPa；Working medium circulation water lines 56, material are carbon steel, pressure resistance
1.5MPa, 250 DEG C of heatproof；57 material of exhaust valve be carbon steel, pressure-resistant 1.5MPa, 250 DEG C of heatproof；Working medium circulating pump 58, material are
Stainless steel, pressure-resistant 1.5MPa, 250 DEG C of heatproof；Medium temperature heat supplying loop 59, material are carbon steel, pressure-resistant 1.5MPa, 150 DEG C of heatproof；It is high
Warm heating coil pipe circuit 510, material are carbon steel, pressure-resistant 1.5MPa, 250 DEG C of heatproof.
When 150 DEG C~200 DEG C hot water come via the transmission of top export metal hose 25 make work by high-temperature heat-exchanging 51
The temperature of matter circulating water line 56 reaches 130 DEG C~170 DEG C and first flows through the hot end of electrification component 71 and be down to 60 DEG C~70
Enter cryogenic heat exchanger 53 after DEG C, makes the supply water temperature of low-temperature heating circuit 55 at 55 DEG C~45 DEG C.Well water is in high-temperature heat-exchanging
Mid temperature heat exchanger 52 is entered after being cooled to 100 DEG C~120 DEG C in 51 to be stopped by further drop to after 50~60, it is net into filtering
Change in device 61, the user side water temperature of mid temperature heat exchanger 52 is at 55 DEG C~65 DEG C.
Further, filtration, purification/gas fractionation unit 6 here includes the Water warfare being connected with mid temperature heat exchanger 52
Filter 61,61 upper end of water purification filter are equipped with non-condensable gas purger 62, and lower end is equipped with pulp separator 63, Water warfare
Filter 61 is connected with water purification outlet pipe 65 and water purification recirculation pipe 66 respectively by water purification circulating pump 64, and water purification recirculation pipe
66 are connected with effluent cycle water inlet pipe 41.
Wherein, water purification filter 61, material are carbon steel, pressure-resistant 1.5MPa；Non-condensable gas purger 62, material are carbon
Steel, pressure-resistant 1.5MPa；Pulp separator 63 out, material are carbon steel, pressure-resistant 1.5MPa；Water purification circulating pump 64, material are carbon steel, pressure resistance
1.5MPa；Water purification outlet pipe 65, material are carbon steel, pressure-resistant 1.0MPa；Water purification recirculation pipe 66, material are carbon steel, pressure resistance
1.5MPa；Its function is to separate the inorganic salts solid particulate matter in well water, the incoagulability gas that the reaction in water is generated
Body N2, CO2 is separated and is discharged, so that purified water can be recycled utilization.
Preferably, thermo-electric generation cooling device 7 here includes being arranged in working medium circulation water lines 56 to have hot end
The electrification component 71 of heat exchanger 71a and cool end heat exchanger 71b, hot end heat exchanger 71a is connected with working medium circulation water lines 56, cold
End heat exchanger 71b is connected by cold end circulating line 72 with cold end cooling tower 74, is followed on cold end circulating line 72 equipped with cold end
Ring pump 73, electrification component 71 is connected with electric power and send inversion electrical control cabinet 76, and electric power send inversion electrical control cabinet 76 respectively and heats
Current supply circuit 75 is connected with external mains-supplied circuit 77, and heats current supply circuit 75 and be connected with lifting electric heater 24.
Wherein, the optional thermoelectric generation film composite module of electrification component 71/steam turbine generator/organic steam circulation screw rod is swollen
Swollen generator, the hot end heat exchanger 71a of preferred steam turbine generator, material is stainless steel, pressure-resistant 1.5MPa, 250 DEG C of heatproof；
Cool end heat exchanger b, material are stainless steel, pressure-resistant 1.5MPa, -40 DEG C of heatproof；, cold end circulating line 72, material is carbon steel, pressure resistance
1.5MPa；Cold end cycle fluid water, cold end circulating pump 73, material are carbon steel, pressure-resistant 1.5MPa；Cold end cooling tower 74, composite wood
Material；Heat current supply circuit 75, heat-resisting 500 DEG C of composite ceramics insulating materials.
When this part in the normal mode of operation, hot-side temperature be 130 DEG C~170 DEG C, 0 DEG C~40 DEG C of cold junction temperature,
Under the action of 90 DEG C~210 DEG C of the temperature difference, the AC/DC electricity that generating set 71 generates send inversion electrical control cabinet 76 pick-up by electric power
It can be exported on one side to city's electrical circuit 77 for industrial-frequency alternating current submitting on one side for the heating current supply circuit 75 in this system.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Although outer well tube 1 is used more herein, sealing pressure resistance wellhead assembly 11, one is opened non-infiltration well casing 12, two and opened
Non- infiltration well casing 13, two open or three open permeable well casing 14, liftable well inner tube 2, the heat-insulated inner tube 21 of upper section, in lower section non-insulated
Pipe 22, pipe holder 23, lifting electric heater 24, metal hose 25, inner tube well head apparatus for controlling of lifting 3, well movement of inner pipe drive
It is dynamic to fill the water oxygenation with hot water pipeline output connector 31, well casing support derrick 32, electric heater apparatus for controlling of lifting 33, sewage
Refuelling wellhead assembly 4, conditioner 42, sewage force (forcing) pump 43, variable-frequency governor 44, goes out saliva at effluent cycle water inlet pipe 41
Pipeline 45, feed(raw material)inlet pipe 46, air inlet duct 47, air compressor 48, compressed air snorkel 49, heat exchange heating apparatus 5,
High-temperature heat-exchanging 51, mid temperature heat exchanger 52, cryogenic heat exchanger 53, low-temperature heating circuit circulating pump 54, low-temperature heating circuit 55, work
Matter circulating water line 56, exhaust valve 57, working medium circulating pump 58, medium temperature heat supplying loop 59, high-temperature heat supply coil circuit 510, filtering
Purification/gas fractionation unit 6, non-condensable gas purger 62, goes out pulp separator 63, water purification circulating pump at water purification filter 61
64, water purification outlet pipe 65, water purification recirculation pipe 66, thermo-electric generation cooling device 7, electrification component 71, hot end heat exchanger 71a, cold
End heat exchanger 71b, cold end circulating line 72, cold end circulating pump 73, cold end cooling tower 74, heating current supply circuit 75, electric power send inverse
The terms such as power transformation control cabinet 76, external mains-supplied circuit 77, but it does not exclude the possibility of using other terms.Use these
Term is only for the convenience of describing and explaining the nature of the invention；It is construed as any additional limitation all
It is to be disagreed with spirit of that invention.
Claims (10)
1. a kind of multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal, including outer well tube (1), which is characterized in that described is outer
Well casing (1) week, sliding was equipped with liftable well inner tube (2) inwardly, and described liftable well inner tube (2) upper end is connected with energy band
Dynamic inner tube well head apparatus for controlling of lifting (3) of the liftable well inner tube (2) along outer well tube (1) vertical lifting, the liftable
Well inner tube (2) upper end is connected by heat exchange heating apparatus (5) with filtration, purification/gas fractionation unit (6), and the filtering is net
Change/gas fractionation unit (6) is connected with sewage water filling oxygenation refuelling wellhead assembly (4), and the sewage water filling oxygenation adds
It is connected between fuel wellhead assembly (4) and outer well tube (1) and liftable well inner tube (2), the heat exchange heating apparatus (5) connection
There is the thermo-electric generation cooling device (7) being connected between outer well tube (1) and liftable well inner tube (2).
2. the multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal according to claim 1, which is characterized in that described is outer
Well casing (1) includes the non-infiltration well casing that at least one is vertically arranged, and the non-infiltration well casing upper end is by sealing pressure-resistant well head
Device (11) closing, the non-infiltration well casing lower end is coaxially connected at least one permeable well casing being vertically arranged, and is located at
The permeable well casing lower end closed of bottom.
3. the multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal according to claim 2, which is characterized in that described can
Lift well inner tube (2) includes being arranged in the heat-insulated inner tube of upper section (21) of outer well tube (1) upper end week inwardly, and the upper section is heat-insulated
Inner tube (21) upper end is arranged in the pressure-resistant wellhead assembly (11) of sealing and beyond outer well tube (1) upper end outside, in the heat-insulated inner tube of upper section
(21) upper end outer circumferential, which is located at the well head of outer well tube (1) upper end, is equipped with insulation construction, and the heat-insulated inner tube of upper section (21) lower end is coaxial
It is connected with the lower section non-insulated inner tube (22) for being connected and extending to outer well tube (1) lower end with the heat-insulated inner tube of upper section (21), and institute
The heat-insulated inner tube of the upper section stated (21) outer circumferential and/or lower section non-insulated inner tube (22) week are inside with outer well tube (1) week inwardly
Pipe holder (23) are equipped between side, the heat-insulated inner tube of the upper section (21) upper end is connected with to be connected with the heat-insulated inner tube of upper section (21)
Metal hose (25), lower section non-insulated inner tube (22) the lower end outer circumferential and outer well tube (1) week inwardly between it is living
It is dynamic to be equipped with lifting electric heater (24).
4. the multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal according to claim 3, which is characterized in that described is interior
Pipe well mouth apparatus for controlling of lifting (3) includes setting in the heat-insulated inner tube of upper section (21) upper end and is located at the pressure-resistant wellhead assembly (11) of sealing
The well casing of top supports derrick (32), and well casing support derrick (32) upper end is equipped with the driving of well movement of inner pipe and hot water pipeline
Output connector (31), and the metal hose (25) and the driving of well movement of inner pipe and hot water pipeline output connector
(31) it is connected, well casing support derrick (32) is equipped with the electric heater lifting control being connected with lifting electric heater (24)
Device (33) processed.
5. the multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal according to claim 3 or 4, which is characterized in that described
Sewage water filling oxygenation refuelling wellhead assembly (4) include the effluent cycle water being connected with filtration, purification/gas fractionation unit (6)
Inlet tube (41), the effluent cycle water inlet pipe (41) are connected with conditioner (42), are connected with original on conditioner (42)
Expect inlet tube (46), and the conditioner (42) is connected by sewage force (forcing) pump (43) with outlet water conduits (45), and institute
The sewage force (forcing) pump (43) stated is equipped with sewage force (forcing) pump (43) variable-frequency governor (44), and the outlet water conduits (45) are worn
In outer well tube (1) week inwardly between liftable well inner tube (2) outer circumferential.
6. the multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal according to claim 5, which is characterized in that the dirt
It further includes an air inlet duct (47) that water, which fills the water oxygenation refuelling wellhead assembly (4), and the air inlet duct (47) passes through
Air compressor (48) is connected with compressed air snorkel (49), and the compressed air snorkel (49) is arranged in outer well tube
(1) week between liftable well inner tube (2) outer circumferential and extends close at lifting electric heater (24) inwardly.
7. the multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal according to claim 3, which is characterized in that described changes
Hot heating plant (5) includes the high-temperature heat-exchanging (51) being connected with metal hose (25), and the high-temperature heat-exchanging (51) passes through
High-temperature heat supply coil circuit (510) is connected with mid temperature heat exchanger (52), and the mid temperature heat exchanger (52) is connected with medium temperature confession
Hot loop (59), and the mid temperature heat exchanger (52) is connected with filtration, purification/gas fractionation unit (6).
8. the multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal according to claim 7, which is characterized in that described changes
Hot heating plant (5) further includes the cryogenic heat exchanger being connected by working medium circulation water lines (56) with high-temperature heat-exchanging (51)
(53), working medium circulating pump (58) are equipped on working medium circulation water lines (56), the cryogenic heat exchanger (53) is equipped with exhaust
Valve (57) is connected with low-temperature heating circuit (55) on the cryogenic heat exchanger (53), and the low-temperature heating circuit (55)
It is equipped with low-temperature heating circuit circulating pump (54).
9. the multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal according to claim 5, which is characterized in that the mistake
Filtering purification/gas fractionation unit (6) includes the water purification filter (61) being connected with mid temperature heat exchanger (52), the Water warfare
Filter (61) upper end is equipped with non-condensable gas purger (62), and lower end is equipped with pulp separator (63), the Water warfare mistake
Filter (61) is connected with water purification outlet pipe (65) and water purification recirculation pipe (66) respectively by water purification circulating pump (64), and described
Water purification recirculation pipe (66) is connected with effluent cycle water inlet pipe (41).
10. the multi-functional mid-deep strata oil field reinjection well of overcritical hydro-thermal according to claim 8, which is characterized in that described
Thermo-electric generation cooling device (7) includes being arranged on working medium circulation water lines (56) with hot end heat exchanger (71a) and cold end
The electrification component (71) of heat exchanger (71b), the hot end heat exchanger (71a) are connected with working medium circulation water lines (56), institute
The cool end heat exchanger (71b) stated is connected by cold end circulating line (72) with cold end cooling tower (74), in cold end circulating line
(72) cold end circulating pump (73) are equipped with, the electrification component (71) is connected with electric power and send inversion electrical control cabinet (76), and institute
The electric power stated send inversion electrical control cabinet (76) to be connected respectively with heating current supply circuit (75) with external mains-supplied circuit (77), and
The heating current supply circuit (75) is connected with lifting electric heater (24).
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|---|---|---|---|---|
| CN111664611A (en) * | 2020-05-06 | 2020-09-15 | 杭州电子科技大学 | Refrigeration cycle device for cooling oil exploitation drilling tool |
| CN111664611B (en) * | 2020-05-06 | 2023-05-09 | 杭州电子科技大学 | Refrigerating cycle device for cooling petroleum exploitation drilling tool |
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