CN208267786U - A kind of down-hole oil tube flexibility centralizer - Google Patents
A kind of down-hole oil tube flexibility centralizer Download PDFInfo
- Publication number
- CN208267786U CN208267786U CN201820521441.XU CN201820521441U CN208267786U CN 208267786 U CN208267786 U CN 208267786U CN 201820521441 U CN201820521441 U CN 201820521441U CN 208267786 U CN208267786 U CN 208267786U
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- CN
- China
- Prior art keywords
- screw rod
- middle screw
- spring
- linear bearing
- holddown spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a kind of oil field downhole tools, especially oil pipe flexibility centralizer.Including middle screw rod, upper clamp nut, upper holddown spring, upper junction plate, Linear bearing flange, linear bearing, lower holddown spring, lower compression nut, mounting blocks, lower connecting plate, support rod, connection sheet, spring bearing.The middle screw rod both ends have screw thread, and centre is polished rod, and the mounting blocks are connect by screw thread with middle screw rod lower end, and the lower connecting plate is fixed by bolt and mounting blocks, and the lower holddown spring, linear bearing, Linear bearing flange are threaded onto middle screw rod.The utility model has the advantages that the frictional force of support section and tube wall is small, the damage to oil pipe is reduced；The overhanging of support section is adjusted, and is applicable to various sizes of oil pipe；Structure is simple, small in size, light weight, is suitable for the lesser oil pipe of internal diameter；6 spring bearings are respectively adopted in each support section, and device can work normally when guarantee has the damage of part spring bearing.
Description
Technical field
The utility model relates to a kind of oil field inclined shafts, the downhole tool of horizontal well, especially oil pipe flexibility centralizer.
Background technique
As a kind of oil field well auxiliary tool, tubing centrilizer is using very universal.Tubing centrilizer has spring at present
The types such as formula, nylon (or rubber) formula, vane type, bow-shaped spring type, clamping hoop type.Wherein, spring, bow-shaped spring type oil pipe are helped
Positive device is by spring force righting oil pipe；Nylon (or rubber) formula and vane type and clamping hoop type tubing centrilizer be by diameter compared with
Big protrusion righting oil pipe.Oil field mainly uses bow-shaped spring type tubing centrilizer both at home and abroad now, but semielliptic spring is helped
Equipment size is larger, is applied in large-sized oil pipe and casing, simultaneously for oil pipe of the diameter between 76mm~100mm more
It is not applicable.Bow spring centralizer stock size and quality are all heavier, directly with tube inner wall friction, are easily damaged oil pipe.Cause
This, existing centralizer effect cannot fully meet working condition requirement under real well.
Summary of the invention
The utility model aims to solve the problem that the above problem, provides a kind of oil pipe flexibility centralizer, can be used for smaller size
Oil pipe and casing, it is small with inner wall frictional force, it can avoid scratching tube wall.The technical scheme adopted is as follows:
A kind of Novel down-hole oil pipe flexibility centralizer, including middle screw rod, upper clamp nut, upper holddown spring, upper connection
Plate, Linear bearing flange, linear bearing, lower holddown spring, lower compression nut, mounting blocks, lower connecting plate, support rod, connection sheet,
Spring bearing.The middle screw rod both ends have screw thread, and centre is polished rod, and the mounting blocks pass through screw thread and middle screw rod lower end
Connection, the lower connecting plate are fixed by bolt and mounting blocks, and the lower compression nut is connect by screw thread with middle screw rod, institute
It states lower holddown spring, linear bearing, Linear bearing flange and is threaded onto middle screw rod, the linear bearing and linear bearing pass through spiral shell
It tethers and connects, the upper junction plate, upper holddown spring are threaded onto middle screw rod, and the upper junction plate is by bolt in linear bearing method
Orchid connection, the upper clamp nut are connect by screw thread with middle screw rod, and the support rod, connection sheet, spring bearing pass through spiral shell
It tethers and is connected into support section, the support section is connected with upper and lower connecting plate respectively by bolt.
The upper junction plate can be slided up and down along middle screw rod, and the lower connecting plate is solid by mounting blocks and middle screw rod
Knot, the upper and lower clamp nut can be by rotatably compressing upper and lower holddown spring, and the upper and lower holddown spring pushes upper junction plate
It is slided up and down along middle screw rod, and then drives support section overhanging or shrink.
Compared with the existing technology, the beneficial achievement of the utility model is: support section uses rolling bearing, with rubbing for tube wall
Wiping power is small, reduces the damage to oil pipe；The overhanging of support section can compress upper and lower holddown spring by upper and lower clamp nut
It adjusts, is applicable to various sizes of oil pipe；Structure is simple, small in size, light weight, is suitable for the lesser oil pipe of internal diameter；Each
6 spring bearings are respectively adopted in support section, and device can work normally when guarantee has the damage of part spring bearing.
Detailed description of the invention
Fig. 1 is a kind of oil pipe flexibility centralizer overall structure diagram of the utility model.
Fig. 2 is a kind of oil pipe flexibility centralizer main view of the utility model.
Fig. 3 is a kind of oil pipe flexibility centralizer top view of the utility model.
Fig. 4 is a kind of support section structural schematic diagram of oil pipe flexibility centralizer of the utility model.
Symbol description:
1- middle screw rod, the upper clamp nut of 2-, the upper holddown spring of 3-, 4- upper junction plate, 5- Linear bearing flange, 6- are straight
Spool is held, holddown spring under 7-, 8- lower compression nut, 9- mounting blocks, 10- lower connecting plate, 11- support rod, 12- spring bearing,
13- connection sheet.
Specific embodiment
The utility model is described further with example with reference to the accompanying drawing:
As shown in Figure 1, Figure 2, Figure 3 shows, the utility model oil pipe flexibility centralizer oil, including middle screw rod 1, upper clamp nut
2, upper holddown spring 3, upper junction plate 4, Linear bearing flange 5, linear bearing 6, lower holddown spring 7, lower compression nut 8, installation
Block 9, lower connecting plate 10, support rod 11, spring bearing 12, connection sheet 13.1 both ends of middle screw rod have screw thread, and centre is
Polished rod, the mounting blocks 9 are connect by screw thread with 1 lower end of middle screw rod, and the lower connecting plate 10 is solid by bolt and mounting blocks 9
Fixed, the lower compression nut 8 is connect by screw thread with middle screw rod 1, the Linear bearing flange 5, linear bearing 6, lower compression
Spring 7 is threaded onto middle screw rod 1, and the Linear bearing flange 5 is bolted with linear bearing 6, the upper junction plate 4,
Upper holddown spring 3 is threaded onto middle screw rod 1, and the upper junction plate 4 is connected by bolt in Linear bearing flange 5, the upper pressure
Tight nut 2 is connect by screw thread with middle screw rod 1, and the support rod 11, spring bearing 12, connection sheet 13 are bolted into
Support section shown in Fig. 4, the support section are connected with upper junction plate 4, lower connecting plate 10 respectively by bolt.
The upper junction plate 4 can be slided up and down along middle screw rod 1, and the lower connecting plate 10 passes through mounting blocks and middle screw rod
Consolidation, the upper clamp nut 2, lower compression nut 8 can by rotatably compressing upper holddown spring 3, lower holddown spring 7, it is described on
Holddown spring 3, lower holddown spring 7 push upper junction plate 4 slided up and down along middle screw rod 1, and then drive support section it is overhanging or
It shrinks.
In use, upper clamp nut 2 and lower compression nut 8 are adjusted according to the inner diameter size of oil pipe first, to adjust separately
The precompression of upper holddown spring 3 and lower holddown spring 7 to upper junction plate 4.After device is put into oil pipe, upper junction plate 4 is in
Between screw rod 1 slide up and down so that spring bearing 12 can be close to tube inner wall.Spring bearing 12 uses Redundancy Design, when part is damaged
Bad when, can guarantee that device works normally.
The utility model is illustrated with way of example above, but the utility model is not limited to examples detailed above, it is all
Any modification and deformation made on the basis of the utility model, both are within the protection scope of the present invention.
Claims (2)
1. a kind of down-hole oil tube flexibility centralizer, it is characterised in that: including middle screw rod (1), upper clamp nut (2), upper compression
Spring (3), upper junction plate (4), Linear bearing flange (5), linear bearing (6), lower holddown spring (7), lower compression nut (8),
Mounting blocks (9), lower connecting plate (10), support rod (11), spring bearing (12), connection sheet (13), middle screw rod (1) both ends
With screw thread, centre is polished rod, and the mounting blocks (9) are connect by screw thread with middle screw rod (1) lower end, the lower connecting plate
(10) fixed by bolt and mounting blocks (9), the lower compression nut (8) is connect by screw thread with middle screw rod (1), described straight
Line bearing flange (5), linear bearing (6), lower holddown spring (7) are threaded onto middle screw rod (1), the Linear bearing flange (5)
It is bolted with linear bearing (6), the upper junction plate (4), upper holddown spring (3) are threaded onto middle screw rod (1), described
Upper junction plate (4) is connected by bolt in Linear bearing flange (5), and the upper clamp nut (2) passes through screw thread and middle screw rod
(1) it connects, support section, the support is bolted into the support rod (11), spring bearing (12), connection sheet (13)
Part is connected with upper junction plate (4), lower connecting plate (10) respectively by bolt.
2. a kind of down-hole oil tube flexibility centralizer according to claim 1, it is characterised in that: the upper junction plate (4) can
It is slided up and down along middle screw rod (1), the lower connecting plate (10) is consolidated by mounting blocks and middle screw rod, the upper clamp nut
(2), lower compression nut (8) can by rotatably compressing upper holddown spring (3), lower holddown spring (7), the upper holddown spring (3),
Lower holddown spring (7) pushes upper junction plate (4) to slide up and down along middle screw rod (1), and then drives support section overhanging or shrink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820521441.XU CN208267786U (en) | 2018-04-13 | 2018-04-13 | A kind of down-hole oil tube flexibility centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820521441.XU CN208267786U (en) | 2018-04-13 | 2018-04-13 | A kind of down-hole oil tube flexibility centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208267786U true CN208267786U (en) | 2018-12-21 |
Family
ID=64676308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820521441.XU Expired - Fee Related CN208267786U (en) | 2018-04-13 | 2018-04-13 | A kind of down-hole oil tube flexibility centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208267786U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323601A (en) * | 2021-06-30 | 2021-08-31 | 江苏力克石油机械有限公司 | Radial adjustment type sucker rod centralizer |
| WO2022154675A1 (en) * | 2021-01-15 | 2022-07-21 | Petromac Ip Limited | A device for centering a sensor assembly in a bore |
-
2018
- 2018-04-13 CN CN201820521441.XU patent/CN208267786U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022154675A1 (en) * | 2021-01-15 | 2022-07-21 | Petromac Ip Limited | A device for centering a sensor assembly in a bore |
| CN113323601A (en) * | 2021-06-30 | 2021-08-31 | 江苏力克石油机械有限公司 | Radial adjustment type sucker rod centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181221 Termination date: 20190413 |