CN206000473U - Vacuum heat-insulation sucker rod - Google Patents
Vacuum heat-insulation sucker rod Download PDFInfo
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- CN206000473U CN206000473U CN201620928734.0U CN201620928734U CN206000473U CN 206000473 U CN206000473 U CN 206000473U CN 201620928734 U CN201620928734 U CN 201620928734U CN 206000473 U CN206000473 U CN 206000473U
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- inner tube
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- sucker rod
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Abstract
This utility model is related to a kind of vacuum heat-insulation sucker rod for high solidifying oil and thickened oil recovery.Including the hollow rod body with male joint, female joint, and it is arranged on the inner tube of hollow rod body interior, between inner tube and sucker rod inner body wall, be provided with annular space chamber；Inner tube front and back ends are connected to anchor tip and sealing shroud；Wherein, anchor tip inwall is constituted with outer wall of inner tube and is sealedly and fixedly connected, and outer wall and male joint inwall constitute the sealing cooperation of circumferencial direction；The inside and outside wall of sealing shroud constitutes, with outer wall of inner tube and female joint inwall, the sealing cooperation that slides axially respectively；It is provided with pressure cap in the outside of sealing shroud；Evacuation hole, evacuation hole and plug sealing cooperation is opened up at oil pumping bar body corresponding annular space chamber.The vacuum mode of this utility model improves the heat-insulating property of oil pipe, makes crude oil thermal loss in lifting process few, just enables to exploit with or without other additional process less, substantially reduces low production cost.
Description
Technical field
This utility model is related to technical field of oil extraction equipment, and more particularly, to one kind is for viscosity reduction, Wax proofing in oilfield exploitation
Vacuum heat-insulation sucker rod.
Background technology
During thickened oil recovery, because recovery process Central Plains oil viscosity is larger and easy wax deposition, largely effect on crude oil
Yield.Current hollow rod（Bar）Heating technique has plug-in type and continuous stainless steel tube, and two kinds of structures all have shortcoming：⑴
There is leak source in plug-in type, affect heat insulation effect.(2) continuous stainless steel tube poor thermal insulation property.
Chinese patent discloses one kind《Oil extraction in oil field Special vacuum heat preserving circle tube》（Authorization Notice No. CN10270486
7B）.Due to this patent, there are the following problems, leads to it to be difficult to carry out.
This patent figure due to the male joint at inner tube, outer tube and two ends, box thread joint can only using Type of Welding connection,
There is the larger temperature difference between inner and outer pipes, its deflection is different, so that weld seam is disengaged, and do not enable vacuumizing effect.
(2) the vacuum inner tube of this patent when installing with hollow outer tube, wear from the male thread end of hollow outer tube by vacuum inner tube
Enter, then with nut, vacuum inner tube is fastened in hollow outer tube, make outside boss and hollow inside the male joint in vacuum inner tube
Shoulder in pipe male thread end is in close contact, and in hollow outer tube box thread, shoulder and nut end face are in close contact.When interior circulation is true
When under blank pipe in well, hollow outer tube is stretched by action of gravity, and vacuum inner tube also leads to weld cracking therewith stretching, in vacuum
Tube failure.
(3) service life typically can only maintain 3-4 month vacuum tube at high temperature, can not meet the need of oil well long-term production
Will.
Content of the invention
The purpose of this utility model is the defect for above technology, provides a kind of rational in infrastructure, high insulating effect, use
The vacuum heat-insulation sucker rod of life-span length.
The technical solution of the utility model：
A kind of vacuum heat-insulation sucker rod, including the hollow rod body with male joint, female joint, and is arranged on hollow
The inner tube of sucker rod body interior, is provided with annular space chamber between inner tube and sucker rod inner body wall；Inner tube front and back ends are connected to
Anchor tip and sealing shroud, are monolithically fabricated the hollow structure running through oil pumping bar body；Wherein, anchor tip is located at oil pumping bar body
Public access head end, its inwall and outer wall of inner tube constitute and be sealedly and fixedly connected, and its outer wall constitutes circumferencial direction with male joint inwall
Sealing cooperation；Sealing shroud be located at oil pumping bar body female joint end, its inside and outside wall respectively with outer wall of inner tube and female joint inwall structure
Become to slide axially sealing cooperation；It is provided with pressure cap in the outside of sealing shroud, after pressure cap and female joint screw-internal thread fit, lock set will be sealed
Tightening position, outwards there is an elongated segment section inner tube rear end from sealing shroud and pressure cap, and this extension constitutes grafting with anchor tip inwall
Cooperation；Open up evacuation hole, evacuation at oil pumping bar body is corresponding to the annular space chamber between inner tube and sucker rod inner body wall
Hole and plug sealing cooperation.
Such scheme further includes：
Ring cavity segment between outer wall of inner tube and sucker rod inner body wall is provided with heat-insulation layer or filling insulation material.
The inside and outside wall of anchor tip and sealing shroud constitutes sealing by sealing member with inner nosepiece wall and outer wall of inner tube respectively and joins
Close.
Anchor tip outer wall constitutes axially position cooperation with male joint inwall by positioning step, sets in anchor tip front end
There are internal jump ring and male joint lock fit.Or anchor tip outer wall is welded and fixed with male joint inwall.
The female thread of described hollow rod body female joint section is longer than standard sucker rod female thread.Public or female joint connects
Place is provided with sealing member.
Vacuum heat-insulation sucker rod of the present utility model is due to employing technique scheme, thus has the characteristics that：
One be inner tube be respectively arranged at two ends with anchor tip and sealing shroud, middle is insulating ring cavity structure, insulation construction
It is not filled by full space, after the evacuation of annular space chamber, improving heat insulation effect further.
Two is that inner tube anchor tip after male joint insertion passes through step and internal jump ring cooperation or direct welding, is easy to make
Industry is installed.
Three is that inner tube one end is fixedly connected with anchor tip, and the inner tube other end passes through sealing shroud endoporus and stretches out outside sealing shroud
Side certain length, forms sealing with sealing shroud endoporus sealing ring, makes medium can not enter inner tube annular space, and affect heat insulation effect,
Extension insertion anchor tip endoporus, forms sealing with endoporus sealing ring when deployed.Because inner tube one end is in free shape
State and by the inner and outer pipes temperature difference produce stress affected, thoroughly solve due to inner tube expand with heat and contract with cold occur fracture, deformation ask
Topic.
Four when being that inner tube is arranged in hollow rod, and the sealing shroud of free end is compressed by pressure cap, and male end is in
Free state, when stretched by gravity, inner tube is not subject to pulling force, reliable operation.
Five be hollow rod female thread longer than standard hollow rod female thread, be easily installed pressure cap.
This utility model is rational in infrastructure, high insulating effect, long service life, through test and field test results indoors
Good, solve defect present in prior art well.
Brief description
Fig. 1 is a kind of structural representation of embodiment of vacuum heat-preserving sucker rod；
Fig. 2 is the structural representation of vacuum heat-preserving sucker rod another kind embodiment；
In figure：Internal jump ring 1, anchor tip 2, inner tube 3, heat-insulation layer 4, hollow rod 5, plug 6, sealing shroud 7, pressure cap 8.
Specific embodiment
Embodiment 1：
Referring to the drawings 1, a kind of vacuum heat-insulation sucker rod, including the hollow rod body with male joint, female joint, and
It is arranged on the inner tube 3 of hollow rod body interior, between inner tube 3 and sucker rod inner body wall, be provided with annular space chamber；Before inner tube 3,
Rear end is connected to anchor tip 2 and sealing shroud 7, is monolithically fabricated the hollow structure running through oil pumping bar body；Anchor tip 2
In the public access head end of oil pumping bar body, its inwall is sealedly and fixedly connected with inner tube 3 outer wall composition（Welding）, its outer wall and male joint
Inwall constitutes the sealing cooperation of circumferencial direction；Sealing shroud 7 be located at oil pumping bar body female joint end, its inside and outside wall respectively with interior
Pipe 3 outer wall and female joint inwall constitute the sealing cooperation that slides axially；It is provided with pressure cap 8 in the outside of sealing shroud 7, pressure cap 8 and mother connect
After head screw-internal thread fit, sealing shroud 7 locking positioning, inner tube 3 rear end outwards there are is an elongated segment section from sealing shroud 7 and pressure cap 8, should
Extension and anchor tip 2 inwall constitute grafting cooperation；Correspond between inner tube 3 and sucker rod inner body wall in oil pumping bar body
Annular space chamber at open up evacuation hole, evacuation hole and plug 6 sealing cooperation.
Above-described embodiment further includes：
Ring cavity segment between inner tube 3 outer wall and sucker rod inner body wall is provided with heat-insulation layer 4 or filling insulation material.
The inside and outside wall of anchor tip 2 and sealing shroud 7 passes through sealing member respectively（Sealing ring）With inner nosepiece wall and inner tube 3 outer wall
Constitute sealing cooperation, anchor tip 2 outer wall constitutes axially position cooperation with male joint inwall by positioning step, in anchor tip
2 front ends are provided with internal jump ring 1 and male joint lock fit.
The female thread of described hollow rod body female joint section is longer than standard sucker rod female thread.Public or female joint connects
Place is provided with sealing member.
Embodiment 2：
Referring to the drawings 2, a kind of vacuum heat-insulation sucker rod, including the hollow rod body with male joint, female joint, and
It is arranged on the inner tube 3 of hollow rod body interior, between inner tube 3 and sucker rod inner body wall, be provided with annular space chamber；Before inner tube 3,
Rear end is connected to anchor tip 2 and sealing shroud 7, is monolithically fabricated the hollow structure running through oil pumping bar body；Anchor tip 2
In the public access head end of oil pumping bar body, its inwall is sealedly and fixedly connected with inner tube 3 outer wall composition（Welding）, its outer wall and male joint
Inwall constitutes the sealing cooperation of circumferencial direction；Sealing shroud 7 be located at oil pumping bar body female joint end, its inside and outside wall respectively with interior
Pipe 3 outer wall and female joint inwall constitute the sealing cooperation that slides axially；It is provided with pressure cap 8 in the outside of sealing shroud 7, pressure cap 8 and mother connect
After head screw-internal thread fit, sealing shroud 7 locking positioning, inner tube 3 rear end outwards there are is an elongated segment section from sealing shroud 7 and pressure cap 8, should
Extension and anchor tip 2 inwall constitute grafting cooperation；Correspond between inner tube 3 and sucker rod inner body wall in oil pumping bar body
Annular space chamber at open up evacuation hole, evacuation hole and plug 6 sealing cooperation.
Above-described embodiment further includes：
Ring cavity segment between inner tube 3 outer wall and sucker rod inner body wall is provided with heat-insulation layer 4 or filling insulation material.
The inside and outside wall of anchor tip 2 and sealing shroud 7 passes through sealing member respectively（Sealing ring）With inner nosepiece wall and inner tube 3 outer wall
Constitute sealing cooperation.After inner tube 3 and anchor tip 2 install, anchor tip 2 outer wall and male joint inwall are directly welded and fixed
The female thread of described hollow rod body female joint section is longer than standard sucker rod female thread.Public or female joint connects
Place is provided with sealing member.
Construction featuress of the present utility model are embodied in：
1st, press dress inner tube in hollow rod, inner tube one end and anchor tip are tightly connected, and the other end is close with sealing shroud
Envelope cooperation, anchor tip, inner tube, sealing shroud form axial airtight passage.
2nd, the public access head end of hollow rod sets internal jump ring, prevents anchor tip from deviating from hollow rod, simultaneously
Inner tube can be extracted from public access head end out.The public access head end endoporus processing step of hollow rod, prevents anchor tip axial motion.
3rd, hollow rod female joint end processing step hole, in the hole presses dress sealing shroud, and sealing shroud inside and outside wall sets sealing ring, interior
Wall is coordinated with inner tube slipper seal, and outer wall is coordinated with hollow rod female joint sealing, and the pressure cap in cooperation outside prevents sealing shroud
Vibration.
4th, evacuation hole and plug are set on hollow rod, be easy to annular space incubation cavity evacuation and process.
Claims (4)
1. a kind of vacuum heat-insulation sucker rod, including the hollow rod body with male joint, female joint, and is arranged on hollow taking out
The inner tube of beam hanger body interior, is provided with annular space chamber between inner tube and sucker rod inner body wall；It is characterized in that：Inner tube front and back ends
It is connected to anchor tip and sealing shroud, be monolithically fabricated the hollow structure running through oil pumping bar body；Wherein, anchor tip is located at
The public access head end of oil pumping bar body, its inwall is sealedly and fixedly connected with outer wall of inner tube composition, and its outer wall is constituted with male joint inwall
The sealing cooperation of circumferencial direction；Sealing shroud be located at oil pumping bar body female joint end, its inside and outside wall respectively with outer wall of inner tube and mother
Inner nosepiece wall constitutes the sealing cooperation that slides axially；It is provided with pressure cap in the outside of sealing shroud, after pressure cap and female joint screw-internal thread fit
By sealing shroud locking positioning, inner tube rear end outwards has in an elongated segment section, this extension and anchor tip from sealing shroud and pressure cap
Wall constitutes grafting cooperation；Open up evacuation at oil pumping bar body is corresponding to the annular space chamber between inner tube and sucker rod inner body wall
Hole, evacuation hole and plug sealing cooperation；Anchor tip outer wall constitutes axially position with male joint inwall by positioning step and joins
Close, be provided with internal jump ring and male joint lock fit in anchor tip front end.
2. vacuum heat-insulation sucker rod according to claim 1 it is characterised in that：In outer wall of inner tube and sucker rod inner body wall
Between ring cavity segment be provided with heat-insulation layer or filling insulation material.
3. vacuum heat-insulation sucker rod according to claim 1 and 2 it is characterised in that：Anchor tip and sealing shroud inside and outside
Wall passes through sealing member respectively and constitutes sealing cooperation with inner nosepiece wall and outer wall of inner tube.
4. vacuum heat-insulation sucker rod according to claim 3 it is characterised in that：Anchor tip outer wall is welded with male joint inwall
Connect fixation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620928734.0U CN206000473U (en) | 2016-08-24 | 2016-08-24 | Vacuum heat-insulation sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620928734.0U CN206000473U (en) | 2016-08-24 | 2016-08-24 | Vacuum heat-insulation sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206000473U true CN206000473U (en) | 2017-03-08 |
Family
ID=58196924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620928734.0U Active CN206000473U (en) | 2016-08-24 | 2016-08-24 | Vacuum heat-insulation sucker rod |
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| CN (1) | CN206000473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166137A (en) * | 2017-07-05 | 2017-09-15 | 中国石油大学(北京) | Geothermal well double-layered vacuum heat-insulation structure and its application method |
-
2016
- 2016-08-24 CN CN201620928734.0U patent/CN206000473U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166137A (en) * | 2017-07-05 | 2017-09-15 | 中国石油大学(北京) | Geothermal well double-layered vacuum heat-insulation structure and its application method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |