CN106285500B - Downhole electric heating vertical injection wells tubular column structure - Google Patents
Downhole electric heating vertical injection wells tubular column structure Download PDFInfo
- Publication number
- CN106285500B CN106285500B CN201610668538.9A CN201610668538A CN106285500B CN 106285500 B CN106285500 B CN 106285500B CN 201610668538 A CN201610668538 A CN 201610668538A CN 106285500 B CN106285500 B CN 106285500B
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- Prior art keywords
- pipe
- metal oil
- oil conduit
- electric heating
- tubular column
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Classifications
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/003—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
-
- 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
-
- 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
- E21B43/20—Displacing by water
-
- 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
-
- 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
Abstract
The embodiment of the present application provides a kind of downhole electric heating vertical injection wells tubular column structure, the vertical bushing pipe and the oil pipe in the cavity surrounded by casing and the vertical bushing pipe being connected including casing, with lower end, oil pipe includes the first metal oil conduit and the second metal oil conduit for being used to form electromagnetic wave energy transmission channel, second metal oil conduit is placed on a metal oil conduit, and the cavities seals between the second metal oil conduit and a metal oil conduit are filled with insulating materials；It is dielectrically separated between casing and vertical bushing pipe, and vertical bushing pipe is radially divided into two parts of isolation insulated from each other, using the two-arm as radio-frequency antenna, correspondence is coupled with the two-arm of radio-frequency antenna respectively for the first metal oil conduit, the second metal oil conduit；The structure further includes：Hot fluid injection pipe in the cavity surrounded by casing and the vertical bushing pipe, the hot fluid injection pipe are oppositely arranged in parallel with oil pipe.The embodiment of the present application is applicable to the co-development of electromagnetic wave and hot fluid.
Description
Technical field
This application involves a kind of oil field equipments, more particularly, to a kind of downhole electric heating vertical injection wells tubing string knot
Structure.
Background technology
At present for the horizontal well development of heavy crude reservoir, mainly application level well carries out steam soak, steam drives and
Steam assisted gravity drainage (SAGD).However since steam injection energy consumption is higher, carbon emission amount is big, and energy consumption is excessively high, it is therefore desirable to open
The thickened oil recovery heating technique for sending out new.The technologies such as current thickened oil recovery electrical heating have been risen, and are likely to become future
Most potential one of the development technique of heavy oil development.
Theoretical research shows the electromagnetic wave heating generated using magnetic dipole and current steam injection or note lighter hydrocarbons solvent etc.
The development technique being combined, can effectively make up that simple electromagnetic wave heating radius is small, electromagnetic wave energy attenuation rate in oil reservoir
The problems such as excessive, while the too low problem of simple steam injection bottom-hole steam quality can be made up, simple note can also be made up
The relatively low problem of lighter hydrocarbons solvent shaft bottom sovent diffusion rate, thus using downhole electromagnetic wave to the low mass dryness fraction steam at injection well bottom/
Low temperature lighter hydrocarbons solvent is heated, and be can effectively improve bottom-hole steam quality or lighter hydrocarbons solvent temperature, is greatly improved injection fluid
Into the oil displacement efficiency and diffusion rate of oil reservoir, to improve production well production.
During realizing the application, the inventor of the present application discovered that：At present for above-mentioned electromagnetic wave and steam injection, note
The co-developments such as lighter hydrocarbons solvent, water are still in theoretical research stage, and there has been no practical applications.And the reason of non-practical application, exists
In the vertical injection wells tubular column structure used in existing heavy oil development is typically designed for single heating mode, therefore nothing
Method is applied to the co-developments such as electromagnetic wave and steam injection, note lighter hydrocarbons solvent, water.Therefore, at present there is an urgent need for a kind of adaptation electromagnetic wave with
The tubular column structure of the co-developments such as steam injection, note lighter hydrocarbons solvent, water.
Invention content
Being designed to provide for the embodiment of the present application is a kind of suitable for the associations such as electromagnetic wave and steam injection, note lighter hydrocarbons solvent, water
With the downhole electric heating vertical injection wells tubular column structure of exploitation.
In order to achieve the above objectives, the embodiment of the present application provides a kind of downhole electric heating vertical injection wells tubular column structure, packet
Include casing, the vertical bushing pipe being connected with described sleeve pipe lower end and positioned at the sky surrounded by described sleeve pipe and the vertical bushing pipe
The oil pipe of intracavitary, wherein：
The oil pipe includes the first metal oil conduit and the second metal oil conduit for being used to form electromagnetic wave energy transmission channel, institute
It states the second metal oil conduit to be placed on a metal oil conduit, and the sky between second metal oil conduit and a metal oil conduit
Chamber sealing is filled with insulating materials；
It is dielectrically separated between described sleeve pipe and the vertical bushing pipe, and the vertical bushing pipe is radially divided into each other
The two parts being dielectrically separated from, described two parts form the two-arm of radio-frequency antenna, first metal oil conduit, second metal
Correspondence couples oil pipe with the two-arm of the radio-frequency antenna respectively；
The well casing rod structure further includes：
Hot fluid injection pipe in the cavity surrounded by described sleeve pipe and the vertical bushing pipe.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the oil pipe further include for by the electricity
The third metal oil conduit that magnetic wave energy transmission channel is isolated with reservoir fluid, the third metal oil conduit are placed on two metal oil
Guan Shang.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, first metal oil conduit, described second
Metal oil conduit is corresponded to by corresponding radio-frequency antenna connector connect with the two-arm of the radio-frequency antenna respectively.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the lower end of the third metal oil conduit are close
It closes, the lower end of the lower end of first metal oil conduit and second metal oil conduit is open and is located at the third metal oil conduit
It is interior, to make to state the cavity between third metal oil conduit and second metal oil conduit, with sky inside first metal oil conduit
Chamber is connected to form coolant circulation canal, for the cooling electromagnetic wave energy transmission channel.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the third metal oil conduit is positioned at described
On outer surface in vertical bushing pipe, it is equipped with to shield the main shielding element of the electromagnetic wave on the third metal oil conduit.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the third metal oil conduit is positioned at described
Secondary shielding element is installed on the outer surface in casing.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the end of the electromagnetic wave energy transmission channel
It is provided with seeker.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the seeker and the electromagnetic wave energy
It is tightly connected by safety valve between transmission channel.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application is equipped with for preventing on the seeker
First centralizer of the seeker and the vertical bushing pipe phase mutual friction.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the third metal oil conduit pass through tubing anchor
It is fixed on the vertical bushing pipe inner wall.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the third metal oil conduit is positioned at described
On outer surface in vertical bushing pipe, for preventing the third metal oil conduit and the vertical bushing pipe phase mutual friction is installed
Two centralizers.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the hot fluid injection pipe is positioned at described
On part in vertical bushing pipe, equally distributed fluid injecting hole is offered.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the laying of third metal oil conduit outer surface
There is erosion resistant coating.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, second metal oil conduit and a gold medal
The insulating materials for belonging to the cavity filling between oil pipe includes high pressure nitrogen.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the length phase of the two-arm of the radio-frequency antenna
Deng.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the vertical bushing pipe pass through liner hanger
It is connected with described sleeve pipe lower end, and junction is equipped with to make the insulation being dielectrically separated between described sleeve pipe and the vertical bushing pipe
Component.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the liner hanger include with mating
Expand the seal pack device of pipe nipple.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, first metal oil conduit and described second
The material of metal oil conduit is brass, and the material of the third metal oil conduit is stainless steel.
The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the material of the centralizer includes Teflon
Dragon.
The aperture of the downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, the fluid injecting hole is 1~3
Millimeter, pitch of holes are 10~20 meters.
In the downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, oil pipe includes the first metal oil conduit and the
Two metal oil conduits, the second metal oil conduit are placed on a metal oil conduit, and the cavity between the second metal oil conduit and a metal oil conduit
Sealing be filled with insulating materials, thus the first metal oil conduit and the second metal oil conduit formed similar to coaxial cable structure,
This structure forms electromagnetic wave energy transmission channel.It is dielectrically separated between the casing of the embodiment of the present application and vertical bushing pipe, and
Vertical bushing pipe is radially divided into two parts of isolation insulated from each other, two parts form the two-arm of radio-frequency antenna, first
Correspondence is coupled with the two-arm of radio-frequency antenna respectively for metal oil conduit, the second metal oil conduit, so that being transmitted by electromagnetic wave energy
The electromagnetic wave energy of channel transfer can act on reservoir fluid to be heated to it by radio-frequency antenna.In addition, the application is real
The well casing rod structure for applying example further includes the hot fluid injection pipe being located in the cavity surrounded by casing and vertical bushing pipe, hot fluid note
Enter pipe to be oppositely arranged in parallel with oil pipe.Therefore, the well casing rod structure of the embodiment of the present application can be suitable for electromagnetic wave and note steaming simultaneously
The co-developments concerning foreign affairs such as vapour, note lighter hydrocarbons solvent, water improve so as to greatly improve shaft bottom heating speed and rate of oil production
The oil recovery efficiency of thermal recovery note.
Description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present application, constitutes the embodiment of the present application
A part does not constitute the restriction to the embodiment of the present application.In the accompanying drawings：
Fig. 1 is the main view schematic cross-sectional view of the downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application.
Specific implementation mode
To make the purpose, technical scheme and advantage of the embodiment of the present application be more clearly understood, with reference to embodiment and attached
Figure, is described in further details the embodiment of the present application.Here, the illustrative embodiments and their description of the embodiment of the present application are used for
It explains the embodiment of the present application, but is not intended as the restriction to the embodiment of the present application.
Below in conjunction with the accompanying drawings, the specific implementation mode of the embodiment of the present application is described in further detail.
Refering to what is shown in Fig. 1, the downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, including thermal production well mouth 1,
The casing 20 that is connect with the thermal production well mouth 1, the vertical bushing pipe being connected with 20 lower end of described sleeve pipe and positioned at by described sleeve pipe
20 and the cavity that surrounds of the vertical bushing pipe in oil pipe.The downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application
Further include：Hot fluid injection pipe 7 in the cavity surrounded by described sleeve pipe 20 and the vertical bushing pipe, the hot fluid note
Enter pipe 7 to be oppositely arranged in parallel with the oil pipe.
In the embodiment of the present application, described sleeve pipe is made of surface pipe, protective casing and production string, wherein surface layer covers
From 100~200 meters under well head lower going-into-well, protective casing is located at from well head tripping in oil reservoir top circle, protective casing in surface pipe pipe；
For production string from oil reservoir top circle's tripping in oil reservoir bottom circle, it is two that the production string, which is equally spaced apart in the middle part of oil reservoir by isolator,
Section.
In the embodiment of the present application, the oil pipe includes the first metal oil conduit for being used to form electromagnetic wave energy transmission channel
62 and second metal oil conduit 61, second metal oil conduit 61 is placed on a metal oil conduit 62, and second metal oil
Cavities seals between pipe 61 and a metal oil conduit 62 are filled with insulating materials, these insulating materials can be to avoid described the
The annular space generation electric field that one metal oil conduit 62 and the second metal oil conduit 61 of institute are surrounded.In the specific implementation of the application
In example, the insulating materials of cavity between second metal oil conduit 61 and a metal oil conduit 62 filling can such as can be with
For high pressure nitrogen.
In the embodiment of the present application, it is dielectrically separated between described sleeve pipe 20 and the vertical bushing pipe, and the vertical bushing pipe
Two parts that component 41 is radially divided into isolation insulated from each other are dielectrically separated from by one, described two parts form radio-frequency antenna
Two-arm (i.e. 30 and 31), first metal oil conduit 62, second metal oil conduit 61 are corresponding with the radio-frequency antenna respectively
Two-arm coupling.In the specific embodiment of the application, the equal length of the two-arm of the radio-frequency antenna, first gold medal
Belong to oil pipe 62, second metal oil conduit 61 respectively by corresponding radio-frequency antenna connector correspondence and the two of the radio-frequency antenna
Arm connects.The radio-frequency antenna connector is that the radio-frequency current for transmitting electromagnetic wave energy transmission channel is conducted to radio frequency day
Line two-arm acts on reservoir fluid to generate frequency electromagnetic waves.
In another embodiment of the application, the oil pipe can also include for by the electromagnetic wave energy transmission channel with
The third metal oil conduit 60 of reservoir fluid isolation, the third metal oil conduit 60 are placed on two metal oil conduit 61.
In another embodiment of the application, the lower end of the third metal oil conduit 60 is closed, first metal oil conduit 62
Lower end and second metal oil conduit 61 lower end it is open and in the third metal oil conduit 60, to make described the
Cavity between three metal oil conduits 60 and second metal oil conduit 61 is connected with 62 internal cavities of the first metal oil conduit
Coolant circulation canal is formed, for the cooling electromagnetic wave energy transmission channel.In the specific implementation of the application
In example, cavity that coolant can be between the third metal oil conduit 60 and second metal oil conduit 61 flows into, then from
First metal oil conduit, the 62 internal cavities outflow, to play the cooling to electromagnetic wave energy transmission channel during heating
Effect.
In another embodiment of the application, the third metal oil conduit 60 is on the outer surface in the vertical bushing pipe
The main shielding element 90 for being equipped with to shield the electromagnetic wave on the third metal oil conduit 60 (avoids the third metal
Electromagnetic wave is generated because being radiated along journey) on oil pipe 60.In the specific embodiment of the application, the main shielding element 90
It can be made of several ferromagnetic rings.
In another embodiment of the application, to further increase electro-magnetic wave absorption effect, the third metal oil conduit 60 exists
Secondary shielding element 91 is also equipped on the outer surface in described sleeve pipe.In the specific embodiment of the application
In, the secondary shielding element 91 is also that can be made of several ferromagnetic rings.
In another embodiment of the application, the end of the electromagnetic wave energy transmission channel is provided with seeker 65.It is described to draw
It can be tightly connected by safety valve 64 between top guide 65 and the electromagnetic wave energy transmission channel, since safety valve 64 can be to electricity
Magnetic wave energy transmission channel carries out high pressure sealing so that second gold medal of magnetic wave energy transmission channel under high-temperature and high-pressure conditions
Belonging to oil pipe 61 can keep being tightly connected between radio-frequency antenna connector.It is above-mentioned to electromagnetic wave energy transmission channel to coordinate
Cooling, the safety valve 64 is internally provided with check valve circulation road, and the check valve circulation road is as coolant circulation canal
A part, in order to the circulation of coolant.Wherein, the connection of the third metal oil conduit 60 and the safety valve 64
Place is equipped with sealing ring 63.
In another embodiment of the application, to prevent component from mutually rubbing, it is equipped on the seeker 65 for preventing
The centralizer 66 of the seeker 65 and the vertical bushing pipe phase mutual friction；The third metal oil conduit 60 is positioned at described vertical
On outer surface in bushing pipe, the righting for preventing the third metal oil conduit 60 and the vertical bushing pipe phase mutual friction is installed
Device 66.Wherein, the centralizer 66 be can be with cyclic structure, and spaced set.
In another embodiment of the application, the third metal oil conduit 60 can be fixed on the vertical lining by tubing anchor 8
On inside pipe wall.The tubing anchor 8 can also be played to electromagnetic wave energy transmission channel position-limiting action simultaneously.
In another embodiment of the application, the hot fluid injection pipe 7 is opened on the part in the vertical bushing pipe
Equipped with equally distributed fluid injecting hole, in order to which the hot fluid injected by hot fluid injection pipe 7 can carry out reservoir fluid
Heating.In the specific embodiment of the application, the aperture of the fluid injecting hole can be 1~3 millimeter, and pitch of holes can be
10~20 meters.
In another embodiment of the application, 60 outer surface of third metal oil conduit is laid with erosion resistant coating, to prevent or drop
The corrosion of low reservoir fluid and injection fluid to the third metal oil conduit 60.
In another embodiment of the application, the vertical bushing pipe passes through liner hanger 21 and 20 lower end phase of described sleeve pipe
Even, and junction is equipped with to make the insulating element 40 being dielectrically separated between described sleeve pipe and the vertical bushing pipe.In the application
A specific embodiment in, the liner hanger 21 can be with it is mating expansion pipe nipple seal pack device.It is this to have
The seal pack device of mating expansion pipe nipple can bear to produce after stretching or cool down caused by horizontal segment bushing pipe thermally expanding under high temperature
Raw contraction, and with high temperature and pressure sealing function.
In another embodiment of the application, the material of first metal oil conduit and second metal oil conduit can be Huang
The material of copper, the third metal oil conduit can be stainless steel.
In another embodiment of the application, the material of the centralizer includes Teflon.
In the downhole electric heating vertical injection wells tubular column structure of the embodiment of the present application, oil pipe includes the first metal oil conduit and the
Two metal oil conduits, the second metal oil conduit are placed on a metal oil conduit, and the cavity between the second metal oil conduit and a metal oil conduit
Sealing be filled with insulating materials, thus the first metal oil conduit and the second metal oil conduit formed similar to coaxial cable structure,
This structure forms electromagnetic wave energy transmission channel.It is dielectrically separated between the casing of the embodiment of the present application and vertical bushing pipe, and
Vertical bushing pipe is radially divided into two parts of isolation insulated from each other, two parts form the two-arm of radio-frequency antenna, first
Correspondence is coupled with the two-arm of radio-frequency antenna respectively for metal oil conduit, the second metal oil conduit, so that being transmitted by electromagnetic wave energy
The electromagnetic wave energy of channel transfer can act on reservoir fluid to be heated to it by radio-frequency antenna.In addition, the application is real
The well casing rod structure for applying example further includes the hot fluid injection pipe being located in the cavity surrounded by casing and vertical bushing pipe, hot fluid note
Enter pipe to be oppositely arranged in parallel with oil pipe.Therefore, the well casing rod structure of the embodiment of the present application can be suitable for electromagnetic wave and note steaming simultaneously
The co-developments concerning foreign affairs such as vapour, note lighter hydrocarbons solvent, water improve so as to greatly improve shaft bottom heating speed and rate of oil production
The oil recovery efficiency of thermal recovery note.
Particular embodiments described above has carried out further in detail the purpose, technical solution and advantageous effect of the application
It describes in detail bright, it should be understood that the foregoing is merely the specific embodiment of the embodiment of the present application, is not used to limit this Shen
Protection domain please, within the spirit and principles of this application, any modification, equivalent substitution, improvement and etc. done should all wrap
It is contained within the protection domain of the application.
Claims (20)
1. a kind of downhole electric heating vertical injection wells tubular column structure, including casing, be connected with described sleeve pipe lower end vertical bushing pipe,
And the oil pipe in the cavity surrounded by described sleeve pipe and the vertical bushing pipe, it is characterised in that：
The oil pipe includes the first metal oil conduit and the second metal oil conduit for being used to form electromagnetic wave energy transmission channel, and described
Two metal oil conduits are placed on a metal oil conduit, and the cavity between second metal oil conduit and a metal oil conduit is close
Packing is filled with insulating materials；
Be dielectrically separated between described sleeve pipe and the vertical bushing pipe, and the vertical bushing pipe be radially divided into it is insulated from each other
Two parts of isolation, described two parts form the two-arm of radio-frequency antenna, first metal oil conduit, second metal oil conduit
Correspondence is coupled with the two-arm of the radio-frequency antenna respectively；
The well casing rod structure further includes：
Hot fluid injection pipe in the cavity surrounded by described sleeve pipe and the vertical bushing pipe.
2. downhole electric heating vertical injection wells tubular column structure according to claim 1, which is characterized in that the oil pipe also wraps
Include the third metal oil conduit for the electromagnetic wave energy transmission channel to be isolated with reservoir fluid, the third metal oil pipe sleeve
In on two metal oil conduit.
3. downhole electric heating vertical injection wells tubular column structure according to claim 1, which is characterized in that first metal
Oil pipe, second metal oil conduit are corresponded to by corresponding radio-frequency antenna connector respectively to be connected with the two-arm of the radio-frequency antenna
It connects.
4. downhole electric heating vertical injection wells tubular column structure according to claim 2, which is characterized in that the third metal
The lower end of oil pipe is closed, and the lower end of the lower end of first metal oil conduit and second metal oil conduit is open and positioned at described
In third metal oil conduit, to make to state the cavity between third metal oil conduit and second metal oil conduit, with first gold medal
Belong to oil pipe internal cavities to be connected to form coolant circulation canal, for the cooling electromagnetic wave energy transmission channel.
5. downhole electric heating vertical injection wells tubular column structure according to claim 2, which is characterized in that the third metal
Oil pipe is equipped with to shield the electromagnetic wave on the third metal oil conduit on the outer surface in the vertical bushing pipe
Main shielding element.
6. downhole electric heating vertical injection wells tubular column structure according to claim 2, which is characterized in that the third metal
Oil pipe is equipped with secondary shielding element on the outer surface in described sleeve pipe.
7. downhole electric heating vertical injection wells tubular column structure according to claim 1, which is characterized in that the electromagnetism wave energy
The end of amount transmission channel is provided with seeker.
8. downhole electric heating vertical injection wells tubular column structure according to claim 7, which is characterized in that the seeker with
It is tightly connected by safety valve between the electromagnetic wave energy transmission channel.
9. downhole electric heating vertical injection wells tubular column structure according to claim 7, which is characterized in that on the seeker
The first centralizer for preventing the seeker and the vertical bushing pipe phase mutual friction is installed.
10. downhole electric heating vertical injection wells tubular column structure according to claim 2, which is characterized in that the third gold
Belong to oil pipe to be fixed on the vertical bushing pipe inner wall by tubing anchor.
11. downhole electric heating vertical injection wells tubular column structure according to claim 2, which is characterized in that the third gold
Belong to oil pipe on the outer surface in the vertical bushing pipe, be equipped with for prevent the third metal oil conduit with it is described vertical
Second centralizer of bushing pipe phase mutual friction.
12. downhole electric heating vertical injection wells tubular column structure according to claim 1, which is characterized in that the hot fluid
Injection pipe offers equally distributed fluid injecting hole on the part in the vertical bushing pipe.
13. downhole electric heating vertical injection wells tubular column structure according to claim 2, which is characterized in that the third gold
Belong to oil pipe outer surface and is laid with erosion resistant coating.
14. downhole electric heating vertical injection wells tubular column structure according to claim 1, which is characterized in that second gold medal
The insulating materials for belonging to the cavity filling between oil pipe and a metal oil conduit includes high pressure nitrogen.
15. downhole electric heating vertical injection wells tubular column structure according to claim 1, which is characterized in that the radio frequency day
The equal length of the two-arm of line.
16. downhole electric heating vertical injection wells tubular column structure according to claim 1, which is characterized in that the vertical lining
Pipe be connected with described sleeve pipe lower end by liner hanger, and junction equipped with to make described sleeve pipe and the vertical bushing pipe it
Between the insulating element that is dielectrically separated from.
17. downhole electric heating vertical injection wells tubular column structure according to claim 16, which is characterized in that the bushing pipe is outstanding
Hanging device includes the seal pack device for having mating expansion pipe nipple.
18. downhole electric heating vertical injection wells tubular column structure according to claim 2, which is characterized in that first gold medal
The material for belonging to oil pipe and second metal oil conduit is brass, and the material of the third metal oil conduit is stainless steel.
19. the downhole electric heating vertical injection wells tubular column structure according to claim 9 or 11, which is characterized in that described to help
The material of positive device includes Teflon.
20. downhole electric heating vertical injection wells tubular column structure according to claim 12, which is characterized in that the fluid note
The aperture for entering hole is 1~3 millimeter, and pitch of holes is 10~20 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610668538.9A CN106285500B (en) | 2016-08-15 | 2016-08-15 | Downhole electric heating vertical injection wells tubular column structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610668538.9A CN106285500B (en) | 2016-08-15 | 2016-08-15 | Downhole electric heating vertical injection wells tubular column structure |
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| Publication Number | Publication Date |
|---|---|
| CN106285500A CN106285500A (en) | 2017-01-04 |
| CN106285500B true CN106285500B (en) | 2018-09-04 |
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| CN201610668538.9A Active CN106285500B (en) | 2016-08-15 | 2016-08-15 | Downhole electric heating vertical injection wells tubular column structure |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397178B (en) * | 2018-04-20 | 2023-09-29 | 中国石油大学(北京) | Heater and thermal recovery device |
| CN111520118B (en) * | 2020-06-12 | 2022-09-13 | 西南石油大学 | Recyclable heavy oil recovery method and system for heating injected solvent underground |
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| CN203223214U (en) * | 2013-03-17 | 2013-10-02 | 秦勇 | Coiled tubing cable electric heating device for thick oil horizontal well |
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| US9382765B2 (en) * | 2013-07-15 | 2016-07-05 | Harris Corporation | Apparatus for recovering hydrocarbon resources including ferrofluid source and related methods |
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| CN101892826A (en) * | 2010-04-30 | 2010-11-24 | 钟立国 | Gas and electric heating assisted gravity oil drainage technology |
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