CN108612491A - A kind of reducing rotary centralizer - Google Patents
A kind of reducing rotary centralizer Download PDFInfo
- Publication number
- CN108612491A CN108612491A CN201611138828.9A CN201611138828A CN108612491A CN 108612491 A CN108612491 A CN 108612491A CN 201611138828 A CN201611138828 A CN 201611138828A CN 108612491 A CN108612491 A CN 108612491A
- Authority
- CN
- China
- Prior art keywords
- reducing
- casing tube
- sucker rod
- grip block
- reducing casing
- 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.)
- Pending
Links
Classifications
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1042—Elastomer protector or centering means
Abstract
The invention discloses a kind of reducing rotary centralizer, it includes the reducing casing tube being sleeved on sucker rod and the supporting positive cover that is sleeved on reducing casing tube；The reducing casing tube is internally provided with several grip blocks, and the grip block is connected to reducing casing tube inner wall by spring；The grip block clamps sucker rod under the effect of elasticity, and reducing casing tube is made to be set on sucker rod；The supporting positive cover is set on reducing casing tube, can be rotated around reducing casing tube rotation pipe.The reducing rotary centralizer can adapt to the bore variation of sucker rod, can carry out righting to the sucker rod of different bores.
Description
Technical field
The present invention relates to oil extraction in oil field tools, refer in particular to a kind of reducing rotary centralizer.
Background technology
During oil extraction in oil field, sucker rod has become each oil field influence pumpingh well with tube inner wall generation eccentric wear and normally produces
One of an important factor for.Rod tube is caused to wear to prevent sucker rod to be in direct contact friction with tubing wall when moving up and down, often
Centralizer is set on sucker rod.
Existing centralizer is all that supporting positive cover is set on the central tube fixed to size, allows central tube and sucker rod
Connection, and then righting is carried out to sucker rod.Since central tube size is fixed, when sucker rod reducing, original fixed size
Centralizer just cannot reuse, it is necessary to again purchase replace.
Invention content
It is an object of the invention to：In view of the above problems, a kind of reducing rotary centralizer, reducing rotation are provided
Centralizer can adapt to the bore variation of sucker rod, can carry out righting to the sucker rod of different bores.
The technical solution adopted by the present invention is as follows：
A kind of reducing rotary centralizer, it includes the reducing casing tube being sleeved on sucker rod and the supporting positive cover that is sleeved on reducing casing tube；
The reducing casing tube is internally provided with several grip blocks, and the grip block is connected to reducing casing tube inner wall by spring；The folder
It holds plate and clamps sucker rod under the effect of elasticity, reducing casing tube is made to be set on sucker rod；The supporting positive cover is set in reducing casing tube
On, it can be rotated around reducing casing tube.
Further, the grip block is equally spaced is arranged inside reducing casing tube；Each grip block it is equal in magnitude.
Further, the grip block camber tiles, inner concave are contacted with sucker rod, and arcuate surface passes through several bullets
Spring is connected with reducing casing tube inner wall.
Further, it is provided with non-slip texture on the inner concave of the grip block arc tiles.
Further, the number of the grip block is 3~4.
Further, the supporting positive cover is set in by rolling bearing on reducing casing tube.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
The grip block of the present invention is supported by spring force, therefore grip block can clamp the sucker rod of arbitrary bore, be convenient for
The centralizer is used for the sucker rod of any bore, saves the cost for replacing and buying multiple fixed bore centralizers, the present invention
It is simple in structure, convenient for manufacture and generate.
Description of the drawings
Fig. 1 is the structure chart of this practicality invention.
Specific implementation mode
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
A kind of reducing rotary centralizer, it includes the reducing casing tube 4 being sleeved on sucker rod 1 and is sleeved on reducing casing tube 4
Supporting positive cover 6；The reducing casing tube 4 is internally provided with several grip blocks 2, and the grip block 2 is connected to reducing casing tube by spring 3
4 inner walls；The grip block 2 clamps sucker rod 1 under the effect of elasticity, and reducing casing tube 4 is made to be set on sucker rod 1；The righting
Set 6 is set on reducing casing tube 4, can be rotated around reducing casing tube 4.
Further, the grip block 2 is equally spaced is arranged inside reducing casing tube 4；The size phase of each grip block 2
Deng.
Further, 2 camber tiles of the grip block, inner concave are contacted with sucker rod 1, and arcuate surface passes through several
Spring 3 is connected with 4 inner wall of reducing casing tube.
It is provided with non-slip texture on the inner concave of 2 arc tiles of the grip block.
The number of the grip block 2 is 3~4.In the present embodiment, the number of grip block 2 uses 3.
The supporting positive cover 6 is set in by rolling bearing 5 on reducing casing tube 4
Working principle of the present invention is as follows：Since grip block 2 is connected to inside drill holder by spring 3, sucker rod 1 is put
In drill holder, under the action of elastic force, the inner concave of grip block 2 is contacted with sucker rod 1 grip block 2 always, and by sucker rod 1
It clamps；Due to the presence of 3 elasticity of spring, grip block 2 can clamp the sucker rod 1 of arbitrary bore.In the present invention, spring 3
The spring 3 that coefficient of elasticity must be used strong, just can guarantee grip block 2 with sufficiently strong clamping force to clamp sucker rod, in turn
By 1 righting of sucker rod, while in the case of avoiding weak vibrations, spring 3 deforms, and cannot by 1 righting of sucker rod, in order to avoid
Grip block 2 skids, and non-slip texture is provided on grip block.Supporting positive cover 6 can be rotated around drill holder, can make the table of supporting positive cover 6
Surface wear is uniformly distributed, and improves the friction durability of supporting positive cover 6.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (6)
1. a kind of reducing rotary centralizer, it is characterised in that：It includes being sleeved on sucker rod（1）On reducing casing tube（4）Be sleeved on
Reducing casing tube（4）On supporting positive cover（6）；The reducing casing tube（4）It is internally provided with several grip blocks（2）, the grip block（2）
Pass through spring（3）It is connected to reducing casing tube（4）Inner wall；The grip block（2）Sucker rod is clamped under the effect of elasticity（1）, make change
Diameter casing（4）It is set in sucker rod（1）On；The supporting positive cover（6）It is set in reducing casing tube（4）On, it can be around reducing casing tube（4）
Rotation.
2. reducing rotary centralizer according to claim 1, it is characterised in that：The grip block（2）Equally spaced setting
In reducing casing tube（4）It is internal；Each grip block（2）It is equal in magnitude.
3. reducing rotary centralizer according to claim 2, it is characterised in that：The grip block（2）Camber tiles,
Inner concave and sucker rod（1）Contact, arcuate surface pass through several springs（3）With reducing casing tube（4）Inner wall is connected.
4. reducing rotary centralizer according to claim 3, it is characterised in that：The grip block（2）Arc tiles it is interior
Non-slip texture is provided on concave surface.
5. reducing sucker rod according to claim 4（1）With centralizer, it is characterised in that：The grip block（2）Number
It is 3~4.
6. reducing sucker rod according to claim 5（1）With centralizer, it is characterised in that：The supporting positive cover（6）Pass through rolling
Dynamic bearing（5）It is set in reducing casing tube（4）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611138828.9A CN108612491A (en) | 2016-12-12 | 2016-12-12 | A kind of reducing rotary centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611138828.9A CN108612491A (en) | 2016-12-12 | 2016-12-12 | A kind of reducing rotary centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108612491A true CN108612491A (en) | 2018-10-02 |
Family
ID=63657460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611138828.9A Pending CN108612491A (en) | 2016-12-12 | 2016-12-12 | A kind of reducing rotary centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108612491A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031674A (en) * | 2019-06-03 | 2020-12-04 | 中国石油天然气股份有限公司 | Device for automatically adjusting friction force of drill column in underground well |
| CN116220632A (en) * | 2023-04-11 | 2023-06-06 | 大庆瑞福佳石油科技有限公司 | Oil well eccentric wear prevention stretcher |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055979A (en) * | 1991-06-26 | 1991-11-06 | 石油大学 | Diameter-regulating centralizing device |
| US5465759A (en) * | 1994-03-22 | 1995-11-14 | Hydril Company | Variable diameter pipe protector |
| CA2494229A1 (en) * | 2004-02-02 | 2005-08-02 | Toolbox Drilling Solutions Limited | Adjustable downhole tool |
| CN202140041U (en) * | 2011-07-21 | 2012-02-08 | 大庆井泰石油工程技术股份有限公司 | Sucker rod centering device |
| CN105170820A (en) * | 2015-10-15 | 2015-12-23 | 黄石优利福自动化装备有限责任公司 | Clamp for round pipe |
| CN205468079U (en) * | 2016-01-29 | 2016-08-17 | 山东潍坊烟草有限公司 | Centre gripping cover for whiteboard pen |
| CN205621359U (en) * | 2016-04-16 | 2016-10-05 | 南安市龙潭农业综合开发有限公司 | Trees with formula tree tablets that are suitable for more |
-
2016
- 2016-12-12 CN CN201611138828.9A patent/CN108612491A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055979A (en) * | 1991-06-26 | 1991-11-06 | 石油大学 | Diameter-regulating centralizing device |
| US5465759A (en) * | 1994-03-22 | 1995-11-14 | Hydril Company | Variable diameter pipe protector |
| CA2494229A1 (en) * | 2004-02-02 | 2005-08-02 | Toolbox Drilling Solutions Limited | Adjustable downhole tool |
| CN202140041U (en) * | 2011-07-21 | 2012-02-08 | 大庆井泰石油工程技术股份有限公司 | Sucker rod centering device |
| CN105170820A (en) * | 2015-10-15 | 2015-12-23 | 黄石优利福自动化装备有限责任公司 | Clamp for round pipe |
| CN205468079U (en) * | 2016-01-29 | 2016-08-17 | 山东潍坊烟草有限公司 | Centre gripping cover for whiteboard pen |
| CN205621359U (en) * | 2016-04-16 | 2016-10-05 | 南安市龙潭农业综合开发有限公司 | Trees with formula tree tablets that are suitable for more |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031674A (en) * | 2019-06-03 | 2020-12-04 | 中国石油天然气股份有限公司 | Device for automatically adjusting friction force of drill column in underground well |
| CN116220632A (en) * | 2023-04-11 | 2023-06-06 | 大庆瑞福佳石油科技有限公司 | Oil well eccentric wear prevention stretcher |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181002 |
|
| RJ01 | Rejection of invention patent application after publication |