CN107060712B - A kind of downhole electromagnetic induction thick oil heating arrangement and heating means - Google Patents
A kind of downhole electromagnetic induction thick oil heating arrangement and heating means Download PDFInfo
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- CN107060712B CN107060712B CN201710270847.5A CN201710270847A CN107060712B CN 107060712 B CN107060712 B CN 107060712B CN 201710270847 A CN201710270847 A CN 201710270847A CN 107060712 B CN107060712 B CN 107060712B
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- heating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
Abstract
The present invention relates to a kind of downhole electromagnetic induction thick oil heating arrangement and heating means, it includes shield, transformer, magnet exciting coil, heater element, interlayer, snap ring A, snap ring B, inner core, variable-diameter spray head and outlet pipe, shield is mounted on the inside of pit shaft, transformer is provided in shield, one end of transformer connects power supply unit, the other end is connect with magnet exciting coil, the magnet exciting coil is inlaid in the wall surface of interlayer, the outer cover of interlayer is equipped with shield, one end of heater element is equipped with snap ring A, the other end is equipped with snap ring B, inner core cover is inside heater element and one end of inner core passes through snap ring A, the other end is packed on snap ring B, one end of outlet pipe is connected to the end of heater element, the other end passes through packer.Thick oil underground well heating device long service life of the invention, heating efficiency is high, and compact-sized, heat-energy losses are few, and heat utilization rate is high, and the rate of heat addition is fast, it can be achieved that high power intensively heats.
Description
Technical field
The present invention relates to a kind of underground oil reservoir heating device, especially a kind of downhole electromagnetic incudes thick oil heating arrangement and adds
Hot method.
Background technique
The fast development of modern industry and the modern life are to the great demand of the energy, and the demand of oil-gas resource is not
It is disconnected to increase, as the exploitation difficulty of petroleum gas is continuously increased, in addition regional conflict influences energy transport channel, imbalance between supply and demand
It becomes increasingly conspicuous.Conventional crude is in short supply and crude oil price vibrates, and opportunity is brought for the exploitation and development of viscous crude, with conventional original
Oil exploitation is different, and for viscous crude since viscosity is big, density is high, is generally not easy to flow under reservoir conditions, or cannot flow at all, exploit
There is also technical problems that is some urgently to be resolved and overcoming for technology, cost of winning, environmental protection etc..
Thickened oil recovery at present is mainly heat exploitation, and the mode of heat exploitation mainly has two kinds of sides of steam soak and steam drive
Method.It is carried out in heavy oil development in steam injection, steam generator is one of essential equipment.Both methods is both needed on ground
Steam station boiler is built, under center system control, is pipelined to each gas injection well, steam injection is in current heavy crude heat extraction
It is nearly at the status of monopolization in technique, but as the demand of thermal recovery technology is continuously improved and the continuous increase of hole condition difficulty,
Its disadvantage is also just exposed increasingly apparently.Transmission range of the ground steam station apart from each gas injection well be equal, oil well landform
The many factors such as difference and conveyance conduit, pit shaft heat preservation difficulty between different, the different producing wells of condition be big make under injection well
Steam quality it is relatively low, and then cause the harvesting of viscous crude than decline, overall economic efficiency decline.
PetroChina Company Ltd. discloses patent in April, 2014: downhole electric heating steam generator,
The heating tube is a hollow cylinder, and quantity is more, and hollow space is a through hole, and fluid is flowed from the through hole
Logical, the electrical heating elements are an elongated heating wire, are wrapped on the tube wall of heating tube, the both ends of the electrical heating elements from
Drawn in shell for external cable connection, after electrical heating elements energization, to the fluid in the heating tube into
Row heating.Heat is generated by electrothermal wire heating in this kind of heating method, then passes to heating tube, finally just transmits water supply, is related to
Three-level heat transfer, this causes its heat transfer efficiency low, i.e., heating efficiency is low, and when heating power is larger, and heating wire itself is easy to be burnt
It ruins.
China National Offshore Oil Corporation discloses patent in May, 2013: a kind of equipment of steam heavy oil heat production and its side
Method, a kind of equipment of steam heavy oil heat production, including ground installation and downhole hardware, the downhole hardware include at least one steam
Generator；The steam generator setting is above oil reservoir or in oil reservoir.The steam direct heating viscous crude that steam generator generates,
The recovery percent of reserves of viscous crude is significantly increased in the temperature that steam can be improved.
The patent document of Publication No. CN106016221A discloses a kind of electrothermal downhole steam generator.The electrothermal
Downhole steam generator includes sequentially connected inlet portion, electric heating portion and outlet portion from top to bottom；Electric heating portion includes extremely
A few bringing-up section, bringing-up section include the more heating tubes for heating piece housing and being placed in heating piece housing；Each heating tube
Heating wire is inside respectively set；The space supplied water and flowed through is formed between each heating tube and between heating tube and heating piece housing；It is high
Warm steam generates in underground and is directly injected into oil reservoir.
The shortcomings that above various downhole electric heating modes are electric-heating-wire-heating, which is that heating wire own loss is tight
Weight, easily damages, causes heater service life short, while heater structure is also more complicated.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, provide a kind of downhole electromagnetic induction thick oil heating arrangement and
Heating means.
The purpose of the present invention is achieved through the following technical solutions: a kind of downhole electromagnetic induction thick oil heating arrangement, it is wrapped
Pit shaft, water tank, water pump, water pipe, power supply unit and packer are included, pit shaft is vertically installed at underground, and the bottom of pit shaft is equipped with envelope
Water tank is connected every one end of device, water pump, another to be terminated with water pipe, water pipe is fixed on inside pit shaft, it is characterised in that: it further includes
Heating device, heating device are placed in pit shaft, and heating device includes shield, transformer, variable-diameter spray head and induction heater, are become
Depressor, variable-diameter spray head and induction heater are installed in inside shield, and the induction heater includes magnet exciting coil, fever member
Part, inner core, interlayer, outlet pipe, snap ring A and snap ring B, interlayer are packed on shield inner wall, and magnet exciting coil is inlaid in interlayer
In wall surface, one end of magnet exciting coil and transformer is connected, and the other end of transformer connects power supply unit, and interlayer is set with fever member
Part, one end of heater element are equipped with variable-diameter spray head, and the other end is equipped with snap ring B, and the variable-diameter spray head connects on water pipe, snap ring
Snap ring A is equipped between B and variable-diameter spray head, inner core cover is in heater element, and one end of inner core passes through snap ring A, and the other end is solid
On snap ring B, the end of an end Jie heater element of outlet pipe, the other end passes through and is equipped with list on packer and outlet pipe
To valve.
The shield is corrosion-resistant stainless steel, and one end is to wait wall thickness arc-shaped structure.
The interlayer is insulation and thermal insulation material.
The inner surface of the variable-diameter spray head is equipped with protrusion.
The magnet exciting coil is hollow copper tube, and which is provided with cooling water pipe connector.
The inner core is hatch frame across one end of snap ring A, and the one end being packed on snap ring B is sealing structure, and
Multiple through-holes are distributed in even circumferential on the wall surface of inner core.
The inner core can be also a kind of shuttle shape entity, and solid object surface is equipped with the protrusion of Spiral distribution, heater element
Both ends be fixed with snap ring B, the both ends of inner core are inserted on snap ring B.
The length and diameter of the inner core can be according to needs of production adjusting size.
A kind of method of described downhole electromagnetic induction thick oil heating arrangement heating viscous crude, it the following steps are included:
S1, starting water pump, water pump extract water from water tank, and water is entered in heater element by water pipe through variable-diameter spray head, is become
Diameter spray head increases the disturbance of water flow；
S2, starting power supply unit, power supply unit send medium frequency alternating current to transformer to reduce voltage increase electric current, thus
For magnet exciting coil power supply, magnet exciting coil generates corresponding alternating magnetic field under midfrequent AC electro ultrafiltration；
The induced current of turbulent state, the induced electricity of flowing are generated in the alternating magnetic field of S3, heater element in step s 2
Stream overcomes the resistance of heater element and generates heat, makes heating element generating heat；
When S4, the inner core inside heater element are structure as claimed in claim 6, enter heater element in step S1
Water first passes around variable-diameter spray head, and variable-diameter spray head can carry out flow-disturbing to water, increase the touch opportunity of water and heater element wall surface, water meeting
Preheating is completed in the inlet of heater element, the water after preheating enters the inner core inside heater element under pressure,
Water enters after inner core the wall surface that heater element is sprayed to by the through-hole on inner core, and the heater element of high temperature makes to spray water on it
Instant vaporization becomes vapor；
When S5, the inner core inside heater element are structure as claimed in claim 7, enter heater element in step S1
Water first passes around variable-diameter spray head, and variable-diameter spray head can carry out flow-disturbing to water, increase the touch opportunity of water and heater element wall surface, water meeting
Preheating is completed in the inlet of heater element, the water after preheating is under pressure by being mounted on heater element inlet
Snap ring B on aperture enter between heater element and inner core, water can along the spiral salient on inner core move forward sufficiently with
The heater element wall surface of high temperature contacts, and instant water vaporization becomes vapor；
Vapor in S6, step 4 or step 5 constantly assembles expansion, from the snap ring B for being mounted on heater element exit
Aperture go out, outlet pipe and check valve through heater element end pass through packer again and are pressed into heavy oil tested layer to be heated, pass through
After a period of time heats, the heating of thick oil underground well is realized.
The invention has the following advantages that
1, long service life, heating efficiency are high.
2, compact-sized, it is small in size, reduce landed cost.
3, heat-energy losses are few, and heat utilization rate is high.
4, system stability is more preferable, can control heating temperature according to heating power.
5, the rate of heat addition is fast, it can be achieved that high power intensively heats.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structure sectional view of the first embodiment of the present invention；
Fig. 3 is the structure sectional view of second of embodiment of the present invention；
In figure: 1- pit shaft, 2- water tank, 3- water pump, 4- water pipe, 5- power supply unit, 6- packer, 7- heating device, 8- are anti-
Shield, 9- transformer, 10- variable-diameter spray head, 11- induction heater, 11-1 magnet exciting coil, 11-2 heater element, 11-3 inner core,
11-4 interlayer, 11-5 outlet pipe, 11-6 snap ring A, 11-7 snap ring B.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing, but protection scope of the present invention is not limited to following institute
It states.
As shown in Fig. 1 ~ 3, a kind of downhole electromagnetic induction thick oil heating arrangement, it includes pit shaft 1, water tank 2, water pump 3, water pipe
4, power supply unit 5 and packer 6, pit shaft 1 are vertically installed at underground, and the bottom of pit shaft 1 is equipped with packer 6, one end of water pump 3
Water tank 2 being connected, another to be terminated with water pipe 4, water pipe 4 is fixed on inside pit shaft 1, it is characterised in that: it further includes heating device 7,
Heating device 7 is placed in pit shaft 1, and heating device 7 includes shield 8, transformer 9, variable-diameter spray head 10 and induction heater 11, is become
Depressor 9, variable-diameter spray head 10 and induction heater 11 are installed in inside shield 8, and the induction heater 11 includes excitation wire
Enclose 11-1, heater element 11-2, inner core 11-3, interlayer 11-4, outlet pipe 11-5, snap ring A11-6 and snap ring B11-7, interlayer 11-
4 are packed on 8 inner wall of shield, and magnet exciting coil 11-1 is inlaid in the wall surface of interlayer 11-4, magnet exciting coil 11-1 and transformer 9
One end connection, the other end of transformer 9 connects power supply unit 5, and interlayer 11-4 is set with heater element 11-2, heater element
One end of 11-2 is equipped with variable-diameter spray head 10, and the other end is equipped with snap ring B11-7, and the variable-diameter spray head 10 connects on water pipe 4, blocks
Snap ring A11-6 is equipped between ring B11-7 and variable-diameter spray head 10, inner core 11-3 is sleeved in heater element 11-2, and inner core 11-3
One end pass through snap ring A11-6, the other end is packed on snap ring B11-7, an end Jie heater element 11-2 of outlet pipe 11-5
End, the other end passes through and is equipped with check valve on packer 6 and outlet pipe 11-5.
The shield 7 is corrosion-resistant stainless steel, and one end is to wait wall thickness arc-shaped structure.
The interlayer 11-4 is insulation and thermal insulation material.
The inner surface of the variable-diameter spray head 10 is equipped with protrusion.
The magnet exciting coil 11-1 is hollow copper tube, and which is provided with cooling water pipe connector.
The inner core 11-3 is hatch frame across one end of snap ring A11-6, and the one end being packed on snap ring B11-7 is
Sealing structure, and multiple through-holes are distributed in even circumferential on the wall surface of inner core 11-3.
The inner core 11-3 can also be a kind of shuttle shape entity, and solid object surface is equipped with the protrusion of Spiral distribution, fever
The both ends of element 11-2 are fixed with snap ring B11-7, and the both ends of inner core 11-3 are inserted on snap ring B11-7.
The length and diameter of the inner core 11-3 can be according to needs of production adjusting size.
A kind of method of described downhole electromagnetic induction thick oil heating arrangement heating viscous crude, it the following steps are included:
S1, starting water pump 3, water pump 3 extract water from water tank 2, and water enters heater element through variable-diameter spray head 10 by water pipe 4
In 11-2, variable-diameter spray head 10 increases the disturbance of water flow；
S2, starting power supply unit 5, power supply unit 5 send medium frequency alternating current to transformer 9 to reduce voltage increase electric current,
To power for magnet exciting coil 11-1, magnet exciting coil 11-1 generates corresponding alternating magnetic field under midfrequent AC electro ultrafiltration；
The induced current of turbulent state, the sense of flowing are generated in S3, the alternating magnetic field of heater element 11-2 in step s 2
It answers electric current to overcome the resistance of heater element 11-2 and generate heat, heater element 11-2 is made to generate heat；
When S4, the inner core 11-3 inside heater element 11-2 are structure as claimed in claim 6, enter hair in step S1
The water of thermal element 11-2 first passes around variable-diameter spray head 10, and variable-diameter spray head 10 can carry out flow-disturbing to water, increase water and heater element 11-
The touch opportunity of 2 wall surfaces, water can be completed to preheat in the inlet of heater element 11-2, and the water after preheating is under pressure
Into the inner core 11-3 inside heater element 11-2, water, which enters after inner core 11-3, sprays to fever member by the through-hole on inner core 11-3
The wall surface of part 11-2, the heater element 11-2 of high temperature, which makes to spray instant water vaporization on it, becomes vapor；
When S5, the inner core 11-3 inside heater element 11-2 are structure as claimed in claim 7, enter hair in step S1
The water of thermal element 11-2 first passes around variable-diameter spray head 10, and variable-diameter spray head 10 can carry out flow-disturbing to water, increase water and heater element 11-
The touch opportunity of 2 wall surfaces, water can be completed to preheat in the inlet of heater element 11-2, and the water after preheating is under pressure
The aperture on snap ring B11-7 by being mounted on the inlet heater element 11-2 enter heater element 11-2 and inner core 11-3 it
Between, water can be moved forward along the spiral salient on inner core 11-3 and sufficiently be contacted with the heater element 11-2 wall surface of high temperature, water wink
Between vaporization become vapor；
Vapor in S6, step 4 or step 5 constantly assembles expansion, from the card for being mounted on the exit heater element 11-2
Aperture on ring B11-7 is gone out, outlet pipe 11-5 and check valve through the end heater element 11-2 pass through again packer 6 indentation to
The heavy oil tested layer of heating realizes the heating of thick oil underground well after heating after a period of time.
The course of work of the invention is as follows: starting water pump 3, water pump 3 draw water from water tank 2, and water enters installation by water pipe 4
Heating device 7 inside pit shaft 1 starts power supply unit 5, and power supply unit 5 is intermediate frequency power supply, and service cable used uses core copper
The petroleum industry special cable of double wire armor structure after conductor wire-polypropylene insulation-cushioned layer, to reduce energy loss, protect
Hinder power supply safety, accesses magnet exciting coil 11-1, the excitation after the reduction voltage increase electric current that power supply unit 5 passes through transformer 9
Coil 11-1 is formed using hollow copper tube coiling, and whole magnet exciting coil 11-1 is equipped with cooling water pipe connector in the shape of a spiral, can
Cooling water is accessed by cooling water in the internal flow of magnet exciting coil 11-1, is passed through cooling in the hollow copper tube of magnet exciting coil 11-1
Water can effectively reduce heater course of work coil overheating itself, prevent coil overheat from heater being caused not work, can be effective
Extending heater life, magnet exciting coil 11-1 is inlaid in the wall surface of interlayer 11-4, and the interlayer 11-4 is insulation and thermal insulation material,
The outside of interlayer 11-4 is wrapped in shield 8, and stating shield 8 is corrosion-resistant stainless steel material, and the internal sleeve of interlayer 11-4 is equipped with
Heater element 11-2, the heater element 11-2 is the hollow cylinder of magnetic stainless steel material, in power supply unit 5
Magnet exciting coil 11-1 can generate corresponding alternating magnetic field under the midfrequent AC electro ultrafiltration of offer, and heater element 11-2 is in alternating magnetic field
Under the action of generate vortex shape electric current, heat is generated when induced current overcomes resistance to flow, make heater element 11-2 generate heat, fever
One end of element 11-2 is equipped with variable-diameter spray head 10, and the water that water pump 1 is pumped into enters heater element through variable-diameter spray head 10 by water pipe 4
11-2, while the protrusion being evenly arranged is provided on the inner surface of variable-diameter spray head 10, part water flow, which bumps against, changes flowing in protrusion
Direction, the inlet time for making a part of water rest on heater element 11-2 is elongated, completes the preheating of water, heater element 11-2
Internal sleeve is equipped with inner core 11-3, and for inner core 11-3 there are two types of example structure, the first example structure inner core 11-3 is that one end is close
The tubular structure of envelope, and multiple through-holes are evenly equipped on the surface of hollow pipe, the both ends of inner core 11-3 pass through respectively is mounted on hair
The snap ring A11-6 of the inlet the thermal element 11-2 and snap ring B11-7 in exit, is packed in inside heater element 11-2, described interior
Core 11-3 is the tubular structure of one end sealing, and multiple through-holes are evenly equipped on the surface of hollow pipe, in the entrance of preheating water
Core 11-3, the heater element 11-2 of high temperature is sprayed to by the through-hole on its surface, and water encounters the wall surface of the heater element 11-2 of high temperature
At vapor, the vapor constantly accumulated is gone out from the aperture on ring B11-7 for instant vaporization, successively by being mounted on heater element
The outlet pipe 11-5, check valve and packer 6 of the one end 11-2, are pressed into heavy oil tested layer to be heated, realize through heating after a period of time
The purpose of heavy oil heating.Second of example structure inner core 11-3 is shuttle shape solid, and the both ends of shuttle shape solid are fixed on hair
On the snap ring B11-7 at the both ends thermal element 11-2, the protrusion of spiral winding is provided on the solid external surface of shuttle shape, spiral winding
Protrusion can increase water flow and the time of contact of heater element 11-2 guarantees that water comes into full contact with heater element 11-2, increase water vapor
Efficiency, the water that water pump 1 is pumped into flows through the inlet that variable-diameter spray head 10 enters heater element 11-2, heater element 11-2's
Preheating is completed in inlet, then the aperture by being mounted on heater element 11-2 arrival end snap ring B11-7 flows into heater element
Between 11-2 and inner core 11-3, water flow can be along the spiral salient on inner core 11-3 to before the outlet spiral of heater element 11-2
Into the heater element 11-2 wall surface of water flow and high temperature comes into full contact with, continuous vaporized expanding, and the vapor of expansion is from heater element
The aperture of the snap ring B11-7 of the outlet end 11-2 is gone out, and outlet pipe 11-5, check valve and packer 6 are successively passed through, and is pressed into be heated
Heavy oil tested layer, through after a period of time heating complete heavy oil heating purpose.
Claims (1)
1. a kind of method of downhole electromagnetic induction thick oil heating arrangement heating viscous crude, described device include pit shaft (1), water tank (2),
Water pump (3), water pipe (4), power supply unit (5) and packer (6), pit shaft (1) are vertically installed at underground, the bottom peace of pit shaft (1)
Equipped with packer (6), one end of water pump (3) connects water tank (2), and another to be terminated with water pipe (4), water pipe (4) is fixed on pit shaft (1)
Inside, it further includes heating device (7), and heating device (7) is placed in pit shaft (1), and heating device (7) includes shield (8), becomes
Depressor (9), variable-diameter spray head (10) and induction heater (11), transformer (9), variable-diameter spray head (10) and induction heater (11) are equal
It is internal to be mounted on shield (8), the induction heater (11) includes magnet exciting coil (11-1), heater element (11-2), inner core
(11-3), interlayer (11-4), outlet pipe (11-5), snap ring A(11-6) and snap ring B(11-7), interlayer (11-4) is packed in protection
It covers on (8) inner wall, magnet exciting coil (11-1) is inlaid in the wall surface of interlayer (11-4), magnet exciting coil (11-1) and transformer (9)
One end connection, the other end of transformer (9) connects power supply unit (5), and interlayer (11-4) is set with heater element (11-2), is sent out
One end of thermal element (11-2) is equipped with variable-diameter spray head (10), and the other end is equipped with snap ring B(11-7), the variable-diameter spray head (10)
Connect on water pipe (4), snap ring B(11-7) and variable-diameter spray head (10) between be equipped with snap ring A(11-6), inner core (11-3) is sleeved on hair
In thermal element (11-2), and one end of inner core (11-3) passes through snap ring A(11-6), the other end is packed in snap ring B(11-7) on, out
The end of one end Jie heater element (11-2) of water pipe (11-5), the other end pass through on packer (6) and outlet pipe (11-5)
Check valve is installed, the shield (8) is corrosion-resistant stainless steel, and one end is to wait wall thickness arc-shaped structure, described
Interlayer (11-4) is insulation and thermal insulation material, and the inner surface of the variable-diameter spray head (10) is equipped with protrusion, the magnet exciting coil
(11-1) is hollow copper tube, and which is provided with cooling water pipe connector, and the inner core (11-3) passes through snap ring A(11-6) one
End is hatch frame, is packed in snap ring B(11-7) on one end be sealing structure, and even circumferential on the wall surface of inner core (11-3)
Multiple through-holes are distributed with, the length and diameter of the inner core (11-3) can be according to needs of production adjusting size, feature
Be: heating the method for viscous crude the following steps are included:
S1, starting water pump (3), water pump (3) extract water from water tank (2), and water, which is entered by water pipe (4) through variable-diameter spray head (10), to be sent out
In thermal element (11-2), variable-diameter spray head (10) increases the disturbance of water flow；
S2, starting power supply unit (5), power supply unit (5) send medium frequency alternating current to transformer (9) to reduce voltage increase electricity
Stream, to power for magnet exciting coil (11-1), magnet exciting coil (11-1) generates corresponding alternation magnetic under midfrequent AC electro ultrafiltration
?；
The induced current of turbulent state, the induction of flowing are generated in S3, the alternating magnetic field of heater element (11-2) in step s 2
Electric current overcomes the resistance of heater element (11-2) and generates heat, and heater element (11-2) is made to generate heat；
Water in S4, step S1 into heater element (11-2) first passes around variable-diameter spray head (10), and variable-diameter spray head (10) can be to water
Flow-disturbing is carried out, increases the touch opportunity of water and heater element (11-2) wall surface, water can be complete in the inlet of heater element (11-2)
At preheating, the water after preheating enters the internal inner core (11-3) of heater element (11-2) under pressure, in water enters
Core (11-3) sprays to the wall surface of heater element (11-2), the heater element (11-2) of high temperature by the through-hole on inner core (11-3) afterwards
The instant water vaporization for making to spray on it becomes vapor；
Vapor in S5, step 4 constantly assembles expansion, from the snap ring B(11-7 for being mounted on the exit heater element (11-2))
On aperture go out, outlet pipe (11-5) and check valve through the end heater element (11-2) pass through again packer (6) indentation to
The heavy oil tested layer of heating realizes the heating of thick oil underground well after heating after a period of time.
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| CN201710270847.5A CN107060712B (en) | 2017-04-24 | 2017-04-24 | A kind of downhole electromagnetic induction thick oil heating arrangement and heating means |
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| CN201710270847.5A CN107060712B (en) | 2017-04-24 | 2017-04-24 | A kind of downhole electromagnetic induction thick oil heating arrangement and heating means |
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| CN109751026B (en) * | 2017-11-01 | 2021-11-02 | 中国石油化工股份有限公司 | Method for improving complexity of fracture mining system and construction process |
| CN108343415B (en) * | 2018-04-20 | 2023-09-22 | 吉林大学 | Underground vortex heater |
| CN109630074A (en) * | 2019-02-20 | 2019-04-16 | 安徽物迅科技有限公司 | A kind of electromagnetic heater and method for the exploitation of seabed combustible ice |
| CN110536497B (en) * | 2019-09-23 | 2024-04-12 | 西安慧金科技有限公司 | Double-layer efficient induction heater and heating method |
| CN113531642B (en) * | 2021-07-28 | 2022-09-16 | 江西摩力斯科技股份有限公司 | Can assemble high-power frequency conversion electromagnetism heating equipment that can make up |
| CN113898316B (en) * | 2021-10-16 | 2023-08-29 | 西南石油大学 | Shale reservoir heating device based on oil pipe conveying |
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| US10196885B2 (en) * | 2015-02-12 | 2019-02-05 | Board Of Regents Of The University Of Texas System | Downhole induction heater for oil and gas wells |
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2017
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| CN2846744Y (en) * | 2005-10-14 | 2006-12-13 | 赵英宝 | Full range electromagnetic heater |
| CN204477997U (en) * | 2015-02-17 | 2015-07-15 | 张家口轩昊新能源科技有限公司 | A kind of atomizing electromagnetic induction steam generator |
| CN105443096A (en) * | 2015-12-29 | 2016-03-30 | 中国石油天然气股份有限公司 | Underground electrical-heating steam generating device |
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