CN201031636Y - Rotary type centralizer - Google Patents
Rotary type centralizer Download PDFInfo
- Publication number
- CN201031636Y CN201031636Y CNU2007201512534U CN200720151253U CN201031636Y CN 201031636 Y CN201031636 Y CN 201031636Y CN U2007201512534 U CNU2007201512534 U CN U2007201512534U CN 200720151253 U CN200720151253 U CN 200720151253U CN 201031636 Y CN201031636 Y CN 201031636Y
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- CN
- China
- Prior art keywords
- centralizer
- rod
- rotary
- nylon
- rotation liner
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a rotary centralizer, which mainly solves a problem that the existing rotary centralizer hardly ensures a gap between a centralizer body and a rod body and is characterized in that: rotary internal linings (3) is arranged between a nylon centralizer body (2) and a rod body (1); the nylon centralizer body (2) is fixed on the outer wall of the rotary internal linings (3); the gaps exist between the rotary internal linings (3) and the rod body (1); the rotary internal linings (3) consists of two symmetrical semicircular bodies; a positioning pin (6) and a positioning hole (7) are arranged on the joint of the rotary internal linings; and two symmetrical semicircular bodies are clamped and gripped to form a ring sleeve barrel shape. The rotary centralizer can effectively ensure the gap between the centralizer body and the rod body and has advantages of simple structure, correct positioning, low costs and high processing efficiency.
Description
Technical field:
The utility model relates to a kind of downhole tool in the oil recovery field, oil field, belongs to a kind of rotary centralizer.
Background technology:
In oil recovery field, oil field,, generally be that centralizer is installed on sucker rod in order to prevent to produce eccentric wear between sucker rod and the oil pipe.At present, rotary oil pumping rod centering device is taked following three kinds of modes: the one, the annular nylon centralizer body of the once injection moulding end from metallic rod body is inserted in, the body of rod one end installs locknut additional, gland is fixed, owing to require to be slightly larger than the diameter of Metallic rod on the bore design of nylon centralizer body, thereby guarantee that annular centralizer body can freely rotate on metallic rod body, can only be used for join hoop type centralizer, be installed in the joint of two well bars, significant limitation is arranged, the cost of production height.The 2nd, because there is the bar head at body of rod two ends, can't be inserted in annular centralizer body from an end, can only be with the direct casting of nylon centralizer body on the body of rod, in order to guarantee the gap between the centralizer body and the body of rod, paper wrapping on the body of rod before casting, behind the intact centralizer body of casting, impact the good centralizer body of casting, its string is moved paper is taken out, in order to take out the paper of winding, body of rod lengthening need be reserved and get the moving space of nylon centralizer body string, increase cost, working (machining) efficiency is low.The 3rd, adopt split-type structural, with pre-processed split type nylon centralizer body, as to cassette centralizer, mutual-inserting type centralizer etc., be assemblied on the body of rod that has stop, as the whole rotary centralizer of bar, poor reliability is easily gone here and there and is moved, comes off in use, to leave enough installation strokes when mounted, be unfavorable for accurate location.No matter above-mentioned three kinds of centralizers are any, all are difficult to guarantee the gap between the centralizer body and the body of rod.
The utility model content:
In order to overcome the deficiency that existing rotary centralizer is difficult to guarantee the gap between the centralizer body and the body of rod, the utility model provides a kind of rotary centralizer, this rotary centralizer can effectively guarantee the gap between the centralizer body and the body of rod, has simple in structure, accurate positioning, cost is low and the high characteristics of working (machining) efficiency.
The technical solution of the utility model is: this rotary centralizer comprises the body of rod and nylon centralizer body, the rotation liner is arranged between the nylon centralizer body and the body of rod, the nylon centralizer body is fixed on the outer wall of rotation liner, gapped between the rotation liner and the body of rod, the rotation liner is made up of the semi-ring body of 2 symmetries, entire body formula bayonet socket and draw-in groove are arranged and have alignment pin and locating hole at its joint, 2 semi-ring bodies form the cover tubbiness of annular after to the card interlock.
The above-mentioned body of rod is a sucker rod, is fixed with spacing ring on the body of rod; The body of rod can be and is fixed on the outer location guard bar device of screw bolt well bar; The body of rod also can be the pipe nipple body; The outer wall of rotation liner has annular ridge.
The utlity model has following beneficial effect: owing to take such scheme, according to the length of nylon centralizer body and the thickness of the body of rod, corresponding semi-circular rotation liner is produced in design, after 2 the corresponding body of rod outer wall of semi-circular rotation liner clamping interlocks, direct casting has the annular nylon centralizer body of water conservancy diversion fin outside the rotation liner, the rotation liner also adopts nylon material, and it is fully combined with the nylon centralizer body.The utility model has shortened the installation length of centralizer body on the body of rod, has reduced cost, has improved working (machining) efficiency, and is simple in structure, accurate positioning.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the body of rod 1 structural representations for location guard bar device;
Accompanying drawing 3 is that the body of rod 1 is the structural representation of pipe nipple;
Accompanying drawing 4 is structural representations of rotation liner 3.
The 1-body of rod among the figure, 2-nylon centralizer body, 3-rotates liner, 4-spacing ring, 5-screw bolt well bar, 6-alignment pin, 7-locating hole, 8-annular ridge.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
In conjunction with Fig. 2, Fig. 3, shown in Figure 4, this rotary centralizer comprises the body of rod 1 and nylon centralizer body 2 by Fig. 1, and rotation liner 3 is arranged between the nylon centralizer body 2 and the body of rod 1, and the outer wall of rotation liner 3 has annular ridge 8.Nylon centralizer body 2 is fixed on the outer wall of rotation liner 3, gapped between the rotation liner 3 and the body of rod 1, rotation liner 3 is made up of the semi-ring body of 2 symmetries, forms the cover tubbiness of annular after its joint has alignment pin 6 and 7,2 semi-ring bodies of locating hole to the card interlock.
According to different needs, by shown in Figure 1, the body of rod 1 is a sucker rod, is fixed with spacing ring 4 on the body of rod 1, and by shown in Figure 3, the body of rod 1 also can be the pipe nipple body, and this dual mode can be used for common oil recovery pump sump; By shown in Figure 2, the body of rod 1 also can be the location guard bar device that is fixed on outside the screw bolt well bar 5, is used for screw pump oil production well.
During actual the use, according to the length of nylon centralizer body 2 and the thickness of the body of rod, corresponding semi-circular rotation liner 3 is produced in design, after 2 the semi-circular rotation liner 3 corresponding body of rod 1 outer wall clamping interlocks, direct casting has the annular nylon centralizer body 2 of water conservancy diversion fin outside rotation liner 3, rotation liner 3 also adopts nylon material, and it is fully combined with nylon centralizer body 2.The utility model has shortened the installation length of centralizer body 2 on the body of rod 1, has reduced cost, has improved working (machining) efficiency, and is simple in structure, accurate positioning.
Claims (5)
1. rotary centralizer, comprise the body of rod (1) and nylon centralizer body (2), it is characterized in that: between the nylon centralizer body (2) and the body of rod (1) rotation liner (3) is arranged, nylon centralizer body (2) is fixed on the outer wall of rotation liner (3), gapped between the rotation liner (3) and the body of rod (1), rotation liner (3) is made up of the semi-ring body of 2 symmetries, entire body formula bayonet socket and draw-in groove are arranged and have alignment pin (6) and locating hole (7) at its joint, 2 semi-ring bodies form the cover tubbiness of annular after to the card interlock.
2. rotary centralizer according to claim 1 is characterized in that: the body of rod (1) is a sucker rod, is fixed with spacing ring (4) on the body of rod (1).
3. rotary centralizer according to claim 1 is characterized in that: the body of rod (1) is for being fixed on the location guard bar device outside the screw bolt well bar (5).
4. rotary centralizer according to claim 1 is characterized in that: the body of rod (1) is the pipe nipple body.
5. rotary centralizer according to claim 1 is characterized in that: the outer wall of rotation liner (3) has annular ridge (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201512534U CN201031636Y (en) | 2007-06-11 | 2007-06-11 | Rotary type centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201512534U CN201031636Y (en) | 2007-06-11 | 2007-06-11 | Rotary type centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201031636Y true CN201031636Y (en) | 2008-03-05 |
Family
ID=39163528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201512534U Expired - Fee Related CN201031636Y (en) | 2007-06-11 | 2007-06-11 | Rotary type centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201031636Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863522A (en) * | 2015-01-19 | 2016-08-17 | 深圳市百勤石油技术有限公司 | Self-lubricating sleeve type spiral centralizer |
| CN110847842A (en) * | 2019-11-15 | 2020-02-28 | 中国石油集团测井有限公司华北分公司 | Oil scraping device for annular cable logging wellhead |
-
2007
- 2007-06-11 CN CNU2007201512534U patent/CN201031636Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863522A (en) * | 2015-01-19 | 2016-08-17 | 深圳市百勤石油技术有限公司 | Self-lubricating sleeve type spiral centralizer |
| CN105863522B (en) * | 2015-01-19 | 2018-02-23 | 深圳市百勤石油技术有限公司 | A kind of self-lubricating bush formula spiral centering device |
| CN110847842A (en) * | 2019-11-15 | 2020-02-28 | 中国石油集团测井有限公司华北分公司 | Oil scraping device for annular cable logging wellhead |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 Termination date: 20120611 |