CN206220926U - Electric heating wellhead device for oil well - Google Patents
Electric heating wellhead device for oil well Download PDFInfo
- Publication number
- CN206220926U CN206220926U CN201621223755.9U CN201621223755U CN206220926U CN 206220926 U CN206220926 U CN 206220926U CN 201621223755 U CN201621223755 U CN 201621223755U CN 206220926 U CN206220926 U CN 206220926U
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- cable
- oil well
- heating
- wellhead assembly
- electrical heating
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- 239000003129 oil well Substances 0.000 title claims abstract description 36
- 238000005485 electric heating Methods 0.000 title abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 73
- 230000001012 protector Effects 0.000 claims description 27
- 239000000725 suspension Substances 0.000 claims description 8
- 230000008021 deposition Effects 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000012546 transfer Methods 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 29
- 239000007789 gas Substances 0.000 description 18
- 239000001993 wax Substances 0.000 description 11
- 239000012530 fluid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000010779 crude oil Substances 0.000 description 6
- 239000012188 paraffin wax Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model provides an oil well electrical heating wellhead assembly, include: a heating cable; the heating cable penetrates through the cable sealing structure; the lower part of the cable sealing structure is hermetically connected with the connecting pipe assembly; the electric heating wellhead device of the oil well also comprises a cable protection pipe, the cable protection pipe is arranged in the connecting pipe component, and the heating cable is arranged in the cable protection pipe in a penetrating way; the internal diameter of cable pillar is greater than heating cable's external diameter, and the clearance between cable pillar and the heating cable is provided with the conduction oil, and the setting up of conduction oil makes heating cable's heat transfer efficiency higher. The technical scheme of the utility model the problem of the unable exploitation oil gas that leads to because the wax deposition blocks up in the oil well among the prior art has been solved effectively.
Description
Technical field
The utility model is related to the technical field of oil-gas mining, in particular to a kind of oil well electrical heating wellhead assembly.
Background technology
At present, in oil extraction process, during the paraffin in crude oil is dissolved in crude oil at stratum, when entering from stratum
During row crude oil production, with the volatilization of the light components in temperature, the reduction of pressure and crude oil, paraffin can slowly from crude oil
Middle precipitation is simultaneously deposited on the tube inner wall of oil well, the occurrence of through after a while, will result in oil well oil conduit paraffin blockage.
At present frequently with de-plugging mode mainly have two kinds：One kind is paraffin scraper machinery paraffin cutting, hot-washing wax remover and chemical agent
Continuous wax removal, this mode is simple, easy, but requires that oil pipe can not be blocked, or allows for foundation circulation, but high pressure
Oil gas well pressure is high, fluid properties are complicated, the content of wax is high and condensation temperature is high, and oil pipe blocking can occur in the production short time, therefore
This kind of mode cannot be applied in high-pressure oil-gas well；Be for second using natrium nitrosum and aqueous ammonium chloride solution mixing heating and
Produce the principle of a large amount of gases carries out de-plugging to the paraffin blockage of oil well, but this kind of mode has the danger of blast, and practicality is not high.
Utility model content
Main purpose of the present utility model is to provide a kind of oil well electrical heating wellhead assembly, of the prior art to solve
The problem of oil gas cannot be exploited caused by being blocked due to wax deposition in oil well.
To achieve these goals, the utility model provides a kind of oil well electrical heating wellhead assembly, including：Heating electricity
Cable；Cable seal structure, heating cable passes through cable seal structure；Connecting pipe component, the bottom of cable seal structure be connected
Tube assembly is tightly connected；Oil well electrical heating wellhead assembly also includes cable protecting tube, and cable protecting tube is arranged in connecting pipe component, plus
Electric heating cable is located in cable protecting tube；The internal diameter of cable protecting tube more than heating cable external diameter, cable protecting tube and heating cable it
Between gap be provided with conduction oil.
Further, connecting pipe component includes the protector that surges, and the protector that surges is arranged on cable seal structure and cable
Between pillar.
Further, the protector that surges includes hydraulic system and two flashboards being connected with hydraulic system, two flashboard phases
To setting so that two flashboards will heat cable cutting in the presence of hydraulic system.
Further, the first end of each flashboard is connected with hydraulic system, and the second end of each flashboard is free end, free end
It is ledge structure.
Further, connecting pipe component also includes four-way connecting tube, the first end and cable seal structure of four-way connecting tube
It is connected, the second end of four-way connecting tube is connected with the protector that surges, and the 3rd end of four-way connecting tube is provided with the first valve, four-way
4th end of connecting tube is provided with the second valve.
Further, the 3rd valve is provided between four-way connecting tube and cable seal structure.
Further, connecting pipe component also includes one-level tubing head, and one-level tubing head is arranged on the bottom of the protector that surges.
Further, one-level tubing hanger is provided with one-level tubing head to realize the suspension of flow string.
Further, connecting pipe component also includes two grades of tubing heads, and two grades of tubing heads are arranged on one-level tubing head and surge
Between protector.
Further, two grades of tubing hangers are provided with two grades of tubing heads to realize the suspension of cable protecting tube.
Using the technical solution of the utility model, using heating cable to being heated in oil well, so can be effectively
The wax deposition that oil well is blocked in oil well is melted, and then reaches the purpose that oil gas is smoothly exploited.Heating cable passes through cable seal knot
Structure due to cable seal structure and heating cable between be in sealing state, do not have so the materials such as oil gas from heating cable and
Gap effusion between cable seal structure, will not even occur because oily borehole pressure is higher from heating cable and cable seal
Gap between structure sprays and causes danger.Gap between cable protecting tube and heating cable is provided with conduction oil, conduction oil
Setting cause heating cable heat transfer efficiency it is higher.The technical solution of the utility model efficiently solves of the prior art
The problem of oil gas cannot be exploited caused by being blocked due to wax deposition in oil well.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing being further understood to of the present utility model, this practicality
New schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In the accompanying drawings：
Fig. 1 shows the structural representation of the embodiment according to oil well electrical heating wellhead assembly of the present utility model；And
Fig. 2 shows the internal structure schematic diagram of the protector that surges of the oil well electrical heating wellhead assembly of Fig. 1.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, cable is heated；20th, cable seal structure；30th, connecting pipe component；31st, four-way connecting tube；32nd, one-level oil pipe
Head；33rd, two grades of tubing heads；40th, surge protector.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
For the ease of description, space relative terms can be used herein, such as " ... on ", " ... top ",
" in ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.If for example, the device in accompanying drawing is squeezed, be described as " in other devices
To be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
Now, it is more fully described with reference to the accompanying drawings according to illustrative embodiments of the present utility model.However, these show
Example property implementation method can be implemented by many different forms, and should not be construed to be limited solely to reality set forth herein
Apply mode.It should be appreciated that these embodiments are provided so that disclosure of the present utility model is thoroughly and complete, and
The design of these illustrative embodiments is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity,
Expand the thickness in layer and region, and make to be presented with like reference characters identical device, thus by omit to they
Description.
As shown in figure 1, the oil well electrical heating wellhead assembly in the present embodiment includes：Heating cable 10, cable seal structure
20 and connecting pipe component 30.Heating cable 10 passes through cable seal structure 20.The bottom of cable seal structure 20 and connecting tube group
Part 30 is tightly connected.Oil well electrical heating wellhead assembly also includes cable protecting tube, and cable protecting tube is arranged in connecting pipe component 30, plus
Electric heating cable 10 is located in cable protecting tube.The internal diameter of cable protecting tube is more than the external diameter of heating cable 10, and cable protecting tube and heating are electric
Gap between cable 10 is provided with conduction oil.
Using the technical scheme of the present embodiment, using heating cable 10 to being heated in oil well, so can be effectively
The wax deposition that oil well is blocked in oil well is melted, and then reaches the purpose that oil gas is smoothly exploited.Heating cable 10 passes through cable seal
Structure 20 due to cable seal structure 20 and heating cable 10 between be in sealing state, do not have so the materials such as oil gas from plus
Gap effusion between electric heating cable 10 and cable seal structure 20, will not even occur because oily borehole pressure is higher from heating electricity
Gap between cable 10 and cable seal structure 20 sprays and causes danger.Gap between cable protecting tube and heating cable 10 sets
Conduction oil is equipped with, the setting of conduction oil causes that the heat transfer efficiency of heating cable 10 is higher.The technical scheme of the present embodiment is effectively
Solve the problems, such as that caused by being blocked due to wax deposition in oil well of the prior art oil gas cannot be exploited.
As depicted in figs. 1 and 2, in the technical scheme of the present embodiment, connecting pipe component 30 includes surge protector 40, liquid
Dynamic protector 40 is arranged between cable seal structure 20 and cable protecting tube.The protector 40 that surges plays a part of safeguard protection,
For example, when there is the danger such as blowout, the inner and outer boundary of well to be isolated the protector 40 that surges cable cutting by structures such as valves.
Said structure is conducive to protecting the safety of operating personnel and equipment.
As depicted in figs. 1 and 2, in the technical scheme of the present embodiment, the protector 40 that surges includes hydraulic system and and liquid
Two connected flashboards of pressure system, two flashboards will be oppositely arranged so that two flashboards will heat cable in the presence of hydraulic system
10 cut-outs.Said structure sets simple, and cost is relatively low.Specifically, two flashboards are separately positioned on the left and right sides, dangerous when occurring
When, hydraulic system drives two flashboards simultaneously mobile to centre, cuts off heating cable 10 in the presence of hydraulic system.
As shown in figure 1, in the technical scheme of the present embodiment, the first end of each flashboard is connected with hydraulic system, each lock
Second end of plate is free end, and free end is ledge structure.On the one hand said structure is conducive to cutting off on heating cable 10, another
Aspect ledge structure can also form certain sealing function.Specifically, the step of two free ends of flashboard is identical, each freedom
It is 3 steps to hold, two flashboard horizontal positioneds.The minimum step of first free end of flashboard is most long, and middle step is fitted
In, step above is most short, and the minimum step of second free end of flashboard is most short, and middle step is moderate, platform above
Rank is most long.
As depicted in figs. 1 and 2, in the technical scheme of the present embodiment, connecting pipe component 30 also includes four-way connecting tube 31,
The first end of four-way connecting tube 31 is connected with cable seal structure 20, the second end of four-way connecting tube 31 and the phase of protector 40 of surging
Even, the 3rd end of four-way connecting tube 31 is provided with the first valve, and the 4th end of four-way connecting tube 31 is provided with the second valve.Four-way
3rd end of connecting tube 31 and the 4th end of four-way connecting tube 31 are located at the left and right two ends of four-way connecting tube 31 respectively, the 3rd end
First valve is provided with pressure gauge, so easily measures the pressure in four-way connecting tube 31, and second valve at the 4th end is provided with
Blowout prevention pipeline, pressure or other materials in such four-way connecting tube 31 can be discharged, and the setting of blowout prevention pipeline causes four-way
The dirt sprayed in connecting tube 31 can reach appointed place, and environment will not be polluted, and also the person will not be damaged.
As shown in figure 1, in the technical scheme of the present embodiment, being set between four-way connecting tube 31 and cable seal structure 20
There is the 3rd valve.The setting of the 3rd valve enable pressure in well by the isolation of the 3rd valve to well outside personnel equipment
Form protection.
As depicted in figs. 1 and 2, in the technical scheme of the present embodiment, connecting pipe component 30 also includes one-level tubing head 32,
One-level tubing head 32 is arranged on the bottom of the protector 40 that surges.The left and right sides of one-level tubing head 32 sets valve, wherein one-level
The left side of tubing head 32 sets two valves, and the right side of one-level tubing head 32 sets two valves, and said structure will not make in well
Pressure and dirt by the both sides of one-level tubing head 32 when being released and cannot be controlled.
As shown in figure 1, in the technical scheme of the present embodiment, being provided with one-level tubing hanger to realize in one-level tubing head 32
The suspension of flow string.Said structure enables that flow string is fixed by one-level tubing hanger.
As depicted in figs. 1 and 2, in the technical scheme of the present embodiment, connecting pipe component 30 also includes two grades of tubing heads 33,
Two grades of tubing heads 33 are arranged on one-level tubing head 32 and the protector 40 that surges between.Two grades of left and right sides of tubing head set valve
Door, specifically, two grades of left sides of tubing head 33 set two valves, and two grades of right sides of tubing head 33 set two valves.It is above-mentioned
Cannot control when structure will not be such that pressure in well, oil gas and dirt is released by the both sides of two grades of tubing heads 33.
As shown in figure 1, in the technical scheme of the present embodiment, two grades of tubing hangers are provided with to realize in two grades of tubing heads 33
The suspension of cable protecting tube.Said structure enables that cable protecting tube is controlled by two grades of tubing hangers.Specifically, flow string
It is coaxially disposed with cable protecting tube.
First, in oil reservoir layer, crude oil is acted on by upward pull power, via penetrating on sleeve bottom reduced diameter section
Hole enters flow string bottom, and then fluid moves up to flow string top along flow string bottom, in the mistake of operation
Cheng Zhong, because the closure of wax deposition prevents fluid or oil gas from producing, can be with by its built-in heater (heating cable 10)
Heating is carried out to fluid anti-blocking.Specifically, heating cable 10 is slowly put into hollow cable protecting tube from the 3rd valve, plus
Electric heating cable 10 is extended downwardly up to cable protecting tube bottom, heating cable 10 are put into after finishing, and removes cable injection head, installs cable
The clamp of sealing structure and heating cable.
Then, the top of heating cable 10 is connected with electrical source of power, forms a heating circuit, and electric current is via cable stream
Enter, and flowed out via hollow cable protecting tube.When there is alternating current to pass through above-mentioned heating circuit, cable can produce heat, so that
So that the wax deposition inside flow string is heated, the viscosity of oil is reduced, improve the mobility of fluid.Therefore, even if high to high pressure
Solidifying Oil/gas Well has that oil gas well pressure is high, fluid properties are complicated, the fluid content of wax is high and condensation temperature is high during being recovered the oil,
The problem of oil pipe blocking is also can solve the problem that by this kind of electrically heated mode such that it is able to smoothly realize the formation testing of high-pressure oil-gas well
Production.
In order to be further understood that to the utility model, as another interchangeable implementation method, cable protecting tube and
The structure of flow string is upper and lower diameter identical hollow cylinder.With reference to Fig. 1 to high-pressure oil gas of the present utility model
Well electrical heating method for removing blockage is illustrated.
First, preventer group (valve of one-level tubing head 32 or so) is installed on the first tubing head top after kill-job, by electricity
Cable pillar is installed and is put into the hollow cylinder of one-level tubing head 32, and one-level tubing hanger is installed on the four-way of one-level tubing head 32,
Then flow string is put into one-level tubing head 32, life is hung by the one-level tubing hanger being installed on one-level tubing head 32
Tubing string is produced, wherein flow string is mutually coaxially disposed with cable protecting tube.
Second, top positioning element is tightened, such as holding screw, machine-processed rice screw etc. remove preventer group, then carry out two
The installation of level tubing head.After two grades of tubing heads are installed, preventer group, two grades of tubing hanger peaces are installed on two grades of tubing head tops
Loaded on two grades of four-ways of tubing head, then cable protecting tube is put into two grades of tubing heads 33, while cable protecting tube also is located at sky
The inside of heart flow string, cable protecting tube is mutually coaxially disposed with flow string.By be installed on two grades of tubing heads 33 two
Level tubing hanger carrys out suspended cables pillar.
3rd, top positioning element is tightened, such as holding screw, machine-processed rice screw etc. remove preventer group, then carry out liquid
The installation of dynamic protector 40.
4th, surge on protector 40 mounting flange, four-way connecting tube 31 and both wings successively valve (the first valve and
Second valve), pressure gauge is installed on the first valve to monitor oil pressure, while the 3rd valve is installed at top, in the 3rd valve
It is upper to access the injection head of heating cable 10, and heating cable 10 is put into so that one, cable enters in cable protecting tube.Heating cable
After 10 are put into and finish, the injection head of heating cable 10 is removed, cable seal structure 20 and strain relief clamp are installed.
Heating cable 10 is connected with Surface power drive source, heat energy is converted electrical energy into, to improve in well in flow string
Temperature, reach the purpose of pour point depression de-plugging.
As depicted in figs. 1 and 2, preventer group is installed on the top of one-level tubing head 32 after kill-job, one-level tubing hanger is sat and is hung on
On the four-way of one-level tubing head 32, petroleum pipeline in electric heater unit is realized by the one-level tubing hanger installed on one-level tubing head 32
Suspension.Jackscrew is tightened, preventer group is torn open, preventer group is installed on two grades of tops of tubing head 33, two grades of tubing hangers are installed on two
On the four-way of level tubing head 33, the cable protection in electric heater unit is realized by two grades of tubing hangers on two grades of tubing heads 33 of installation
The suspension of pipe.Preventer group is removed on two grades of tubing heads 33, the protector 40 that surges is installed, pacified successively on protector 40 surging
The valve (the first valve and the second valve) of flange, four-way connecting tube 31 and both wings is loaded onto, the 3rd valve is installed at top, the 3rd
Cable injection head is connect on valve, heating cable 10 is put into.After discharging heating cable 10, the injection head of heating cable 10, peace are removed
Dress cable seal structure 20 and cable hanger.
As depicted in figs. 1 and 2, in process of production, after two grades of tubing hanger suspended cables pillars, when becoming occurs in cable protecting tube
When shape is damaged, the pressure of high-pressure oil-gas well can be delivered to cable protecting tube, act on four-way connecting tube 31, cable seal structure 20
On, fluid leakage in well is caused, the protector 40 that surges can be reduced borehole fluid and cable protecting tube is invaded using the structure of double disc
Erosion, in case of emergency, can cut cable, realize the sealing of well head.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
It should be noted that term " first " in specification and claims of the present utility model and above-mentioned accompanying drawing,
" second " etc. is for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so
The data for using can be exchanged in the appropriate case, so as to embodiment example of the present utility model described herein if to remove
Order beyond those for illustrating herein or describing is implemented.Additionally, term " comprising " and " having " and theirs is any
Deformation, it is intended that covering is non-exclusive to be included, for example, containing process, method, system, the product of series of steps or unit
Product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for this
A little processes, method, product or other intrinsic steps of equipment or unit.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (10)
1. a kind of oil well electrical heating wellhead assembly, it is characterised in that including：
Heating cable (10)；
Cable seal structure (20), it is described to heat cable (10) through the cable seal structure (20)；
Connecting pipe component (30), bottom and the connecting pipe component (30) of the cable seal structure (20) are tightly connected；
The oil well electrical heating wellhead assembly also includes cable protecting tube, and the cable protecting tube is arranged on the connecting pipe component (30)
Interior, heating cable (10) is located in the cable protecting tube；
The internal diameter of the cable protecting tube is more than the external diameter for heating cable (10), the cable protecting tube and the heating cable
(10) gap between is provided with conduction oil.
2. oil well electrical heating wellhead assembly according to claim 1, it is characterised in that the connecting pipe component (30) includes
Surge protector (40), the protector that surges (40) be arranged on the cable seal structure (20) and the cable protecting tube it
Between.
3. oil well electrical heating wellhead assembly according to claim 2, it is characterised in that the protector that surges (40) includes
Hydraulic system and two flashboards being connected with the hydraulic system, described two flashboards are oppositely arranged so that described two flashboards exist
By heating cable (10) cut-out in the presence of the hydraulic system.
4. oil well electrical heating wellhead assembly according to claim 3, it is characterised in that the first end of each flashboard and institute
State hydraulic system to be connected, the second end of each flashboard is free end, and the free end is ledge structure.
5. oil well electrical heating wellhead assembly according to claim 2, it is characterised in that the connecting pipe component (30) is also wrapped
Four-way connecting tube (31) is included, the first end of the four-way connecting tube (31) is connected with the cable seal structure (20), described four
The second end for leading to adapter (31) is connected with the protector that surges (40), and the 3rd end of the four-way connecting tube (31) is provided with
First valve, the 4th end of the four-way connecting tube (31) is provided with the second valve.
6. oil well electrical heating wellhead assembly according to claim 5, it is characterised in that the four-way connecting tube (31) and institute
State and be provided with the 3rd valve between cable seal structure (20).
7. oil well electrical heating wellhead assembly according to claim 5, it is characterised in that the connecting pipe component (30) is also wrapped
One-level tubing head (32) is included, the one-level tubing head (32) is arranged on the bottom of protector (40) of surging.
8. oil well electrical heating wellhead assembly according to claim 7, it is characterised in that is set in the one-level tubing head (32)
One-level tubing hanger is equipped with to realize the suspension of flow string.
9. oil well electrical heating wellhead assembly according to claim 7, it is characterised in that the connecting pipe component (30) is also wrapped
Two grades of tubing heads (33) are included, two grades of tubing heads (33) are arranged on the one-level tubing head (32) and the protector that surges
(40) between.
10. oil well electrical heating wellhead assembly according to claim 9, it is characterised in that in two grades of tubing heads (33)
Two grades of tubing hangers are provided with to realize the suspension of the cable protecting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223755.9U CN206220926U (en) | 2016-11-14 | 2016-11-14 | Electric heating wellhead device for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223755.9U CN206220926U (en) | 2016-11-14 | 2016-11-14 | Electric heating wellhead device for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206220926U true CN206220926U (en) | 2017-06-06 |
Family
ID=58792227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621223755.9U Active CN206220926U (en) | 2016-11-14 | 2016-11-14 | Electric heating wellhead device for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206220926U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101891A (en) * | 2019-02-19 | 2020-05-05 | 大庆市富隆达石油工程机械设备有限公司 | Valve for oil well |
| CN112227998A (en) * | 2020-12-14 | 2021-01-15 | 东营华辰石油装备有限公司 | Double-pipe thermal recovery wellhead device and using method thereof |
| CN114086904A (en) * | 2020-08-25 | 2022-02-25 | 中国石油天然气股份有限公司 | Christmas tree system |
| CN114320231A (en) * | 2020-09-30 | 2022-04-12 | 中国石油天然气股份有限公司 | Method for preventing wax precipitation of production string of gas production well |
-
2016
- 2016-11-14 CN CN201621223755.9U patent/CN206220926U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101891A (en) * | 2019-02-19 | 2020-05-05 | 大庆市富隆达石油工程机械设备有限公司 | Valve for oil well |
| CN114086904A (en) * | 2020-08-25 | 2022-02-25 | 中国石油天然气股份有限公司 | Christmas tree system |
| CN114086904B (en) * | 2020-08-25 | 2023-10-31 | 中国石油天然气股份有限公司 | Christmas tree system |
| CN114320231A (en) * | 2020-09-30 | 2022-04-12 | 中国石油天然气股份有限公司 | Method for preventing wax precipitation of production string of gas production well |
| CN114320231B (en) * | 2020-09-30 | 2024-03-26 | 中国石油天然气股份有限公司 | Method for preventing wax deposition of production pipe column of gas production well |
| CN112227998A (en) * | 2020-12-14 | 2021-01-15 | 东营华辰石油装备有限公司 | Double-pipe thermal recovery wellhead device and using method thereof |
| CN112227998B (en) * | 2020-12-14 | 2021-02-26 | 东营华辰石油装备有限公司 | Double-pipe thermal recovery wellhead device and using method thereof |
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