CN106437556A - Sucker rod centralizer facilitating decomposing resistance - Google Patents
Sucker rod centralizer facilitating decomposing resistance Download PDFInfo
- Publication number
- CN106437556A CN106437556A CN201611008957.6A CN201611008957A CN106437556A CN 106437556 A CN106437556 A CN 106437556A CN 201611008957 A CN201611008957 A CN 201611008957A CN 106437556 A CN106437556 A CN 106437556A
- Authority
- CN
- China
- Prior art keywords
- centralizer
- resistance
- wiper block
- sucker rod
- outer tube
- 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.)
- Withdrawn
Links
- 238000005086 pumping Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1071—Wear protectors; Centralising devices, e.g. stabilisers specially adapted for pump rods, e.g. sucker rods
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a sucker rod centralizer facilitating decomposing resistance. The sucker rod centralizer comprises a core body. Connectors are arranged at two ends of the core body, and a centralizing body is arranged in the middle of the core body; the outer diameter of the centralizing body is greater than that of a sucker rod; the centralizing body comprises an outer barrel, an inner barrel and two cover plates; a centralizing block is arranged on the surface of the outer barrel, a plurality of grooves are formed in the centralizing block, and the grooves are uniformly distributed along the axis of the centralizing block; a plurality of rollers are further arranged on the centralizing block, the rollers are arranged in the grooves in the longitudinal direction of the centralizing block, and the rollers protrude out of the centralizing block; and the two cover plates are arranged at two ends of the centralizing block respectively. Part of vertical resistance can be decomposed through motion when the sucker rod centralizer is used, so that the suffered resistance is greatly reduced, the abrasion of the centralizer is reduced, the service life of the centralizer is prolonged, and the work efficiency is improved.
Description
Technical field
The present invention relates to oil recovery aid field, particularly to the oil pumping rod centering device being easy to decomposition resistance.
Background technology
At present, oil pumping rod centering device is widely used in oil well acquisition, is the downhole tool of anti-sucker rod partial wear it is adaptable to partially
The rod-pumped well of mill, is particularly suited for rod-pumped well and the deviated directional drilling of the above eccentric wear of the sucker rod point of neutralization, the sucker rod point of neutralization
Hereinafter, coordinate with the nylon centralising device on the oil pumping body of rod, eccentric abrasion prevention is better.
Sucker rod is up and down in oil pipe, and due to the elastic deformation of sucker rod, bar and tubing wall easily produce friction, take out
Beam hanger easily breaks de-, and oil pumping rod centering device has that pliability is strong, it contacts with tube inner wall, it is possible to reduce the friction of bar and pipe,
Strengthen the oil recovery life-span of oil pumper.Centralizer is connected on sucker rod, and the external diameter using supporting positive cover is more than rod collar external diameter
Play centralizing function；It is High Strength Wear-Resistance Material using supporting positive cover, contact with oil pipe and so that centralizer body is worn and torn, and reduce the mill of oil pipe
Damage, to reach the purpose of eccentric abrasion prevention.
During oil extraction operation, the activity of sucker rod makes oil pipe produce certain vertical force to centralizer, so that righting
Device is hampered impact, and common centralizer cannot reduce the resistance being subject to, and in the presence of frictional force, leads to centralizer service life
Short, and easily make sucker rod impaired.
Content of the invention
The present invention is in order to overcome existing oil pumping rod centering device to exist cannot to eliminate or effectively reduce what centralizer was subject to hang down
Nogata to resistance, lead to centralizer service life short, the easily damaged defect of sucker rod, there is provided be easy to decompose resistance oil pumping
Bar centralizer, can effectively reduce the resistance that in oil extraction operation, centralizer is subject to, and improve centralizer service life, more effectively protect
Protect sucker rod.
For reaching object above, the present invention adopts the following technical scheme that：
It is easy to decompose the oil pumping rod centering device of resistance, including core body, core body two ends are provided with interface, are provided with righting in the middle part of core body
Body；Centralizer body external diameter is more than sucker rod external diameter；Centralizer body includes outer tube, inner core and cover plate；Outer barrel surface is provided with wiper block, helps
Arrange fluted on positive block, groove is uniformly distributed along wiper block axis；Roller is additionally provided with wiper block, roller is indulged along wiper block
To setting in a groove, roller protrudes from wiper block；The quantity of described cover plate is two pieces, and the cover plate described in two pieces is separately positioned on
Centralizer body two ends.During present invention application, the roller on centralizer body can effectively reduce the vertical frictional force of centralizer body and tube wall, can have
The power of the vertical direction that the elimination part sucker rod of effect produces, reduces the loss of centralizer, extends its service life.
Further, in described core body axis, wiper block uniformly divides the diameter parallel of wiper block along described outer tube circumferencial direction
Cloth, centralizer energy uniform stressed, it is to avoid too fast loss.
Further, along described outer tube circumferencial direction at least provided with 3 groups, every group is at least 2 to groove.
Further, the two ends of described outer tube are provided with limited impression, and described cover plate is located between outer tube and inner core and embedding
Enter in limited impression.Wherein, cover plate is closed to centralizer body.
In sum, the invention has the advantages that：Overall structure of the present invention is simple, facilitates implementation, low cost, this
The outer barrel surface of invention is provided with wiper block, wiper block is arranged fluted, groove is uniformly distributed along wiper block axis, wiper block
On be additionally provided with roller, roller is longitudinally disposed in a groove along wiper block, and roller protrudes from wiper block, is being made by vertical force
Used time, rolled by roller, eliminate partly vertical stress, substantially reduce the resistance that centralizer is subject to, extending centralizer makes
With the life-span, it is effectively protected sucker rod.
Brief description
Accompanying drawing described herein is used for providing the embodiment of the present invention is further understood, and constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is present configuration schematic diagram；
Fig. 2 is profile of the present invention；
Corresponding parts title is marked in accompanying drawing：1- core body, 2- centralizer body, 3- interface, 21- roller, 22- wiper block, 23-
Outer ring, 24- inner ring, 27- limited impression, 28- cover plate, 29- groove.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in Figures 1 and 2, it is easy to decompose the oil pumping rod centering device of resistance, including core body 1, core body 1 two ends are respectively provided with
There is interface 3, in the middle part of core body 1, be provided with centralizer body 2；During work, it is connected with two ends sucker rod respectively by the interface 3 at two ends, helps
Positive block 22 is uniformly distributed along outer tube 23 circumferencial direction.The two ends of outer tube 23 are provided with limited impression 27, and cover plate 28 is located at outer tube
Between 23 and inner core 24, and in embedded limited impression 27.The quantity of the present embodiment cover plate 28 is two pieces, and two cover plates 28 are respectively
It is arranged on centralizer body 2 two ends.Because centralizer external diameter is more than sucker rod external diameter, centralizer plays stable central point to sucker rod
Effect, with the carrying out of oil extraction operation, sucker rod moves up and down in oil pipe, and the roller 21 on centralizer body 2 is contacted with tube wall, with
Sucker rod up and down motion and can eliminate partly vertical resistance；By the effect of roller 21, centralizer greatly reduces hindering of being subject to
Power, reduces the abrasion of centralizer, extends service life, improve operating efficiency.
Above-described specific embodiment, has been carried out to the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be should be understood that the specific embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvement within the spirit and principles in the present invention, done etc., all should comprise
Within protection scope of the present invention.
Claims (4)
1. it is easy to decompose the oil pumping rod centering device of resistance it is characterised in that including core body（1）, described core body（1）Two ends are provided with
Interface（3）, core body（1）Middle part is provided with centralizer body（2）；
Described centralizer body（2）External diameter is more than sucker rod external diameter；
Described centralizer body（2）Including outer tube（23）, inner core（24）And cover plate（28）；Described outer tube（23）Surface is provided with wiper block
（22）, described wiper block（22）Upper setting is fluted（29）, described groove（29）Along wiper block（22）Axis is uniformly distributed；Described
Wiper block（22）On be additionally provided with roller（21）, described roller（21）Along wiper block（22）It is disposed longitudinally on groove（29）In, rolling
Wheel（21）Protrude from wiper block（22）；Described cover plate（28）Quantity be two pieces, the cover plate described in two pieces（28）It is separately positioned on
Centralizer body（2）Two ends.
2. according to claim 1 it is easy to decompose the oil pumping rod centering device of resistance it is characterised in that described wiper block（22）
Diameter parallel in described core body（1）Axis, wiper block（22）Along described outer tube（23）Circumferencial direction is uniformly distributed.
3. according to claim 1 it is easy to decompose the oil pumping rod centering device of resistance it is characterised in that described groove（29）Edge
Described outer tube（23）Circumferencial direction at least provided with 3 groups, described groove（29）Every group at least 2.
4. according to claim 1 it is easy to decompose the oil pumping rod centering device of resistance it is characterised in that described outer tube（23）'s
Two ends are provided with limited impression（27）, described cover plate（28）Positioned at outer tube（23）With inner core（24）Between, and embedded spacing recessed
Groove（27）Interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611008957.6A CN106437556A (en) | 2016-11-16 | 2016-11-16 | Sucker rod centralizer facilitating decomposing resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611008957.6A CN106437556A (en) | 2016-11-16 | 2016-11-16 | Sucker rod centralizer facilitating decomposing resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106437556A true CN106437556A (en) | 2017-02-22 |
Family
ID=58219988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611008957.6A Withdrawn CN106437556A (en) | 2016-11-16 | 2016-11-16 | Sucker rod centralizer facilitating decomposing resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437556A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100556A (en) * | 2017-04-20 | 2017-08-29 | 成都亨通兆业精密机械有限公司 | A kind of normal state stabilising arrangement of oil gas pumping system |
-
2016
- 2016-11-16 CN CN201611008957.6A patent/CN106437556A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100556A (en) * | 2017-04-20 | 2017-08-29 | 成都亨通兆业精密机械有限公司 | A kind of normal state stabilising arrangement of oil gas pumping system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170222 |
|
| WW01 | Invention patent application withdrawn after publication |