CN2325506Y - Sucker rod stabilizer to prevent it from being eccentrically worn - Google Patents
Sucker rod stabilizer to prevent it from being eccentrically worn Download PDFInfo
- Publication number
- CN2325506Y CN2325506Y CN 98209980 CN98209980U CN2325506Y CN 2325506 Y CN2325506 Y CN 2325506Y CN 98209980 CN98209980 CN 98209980 CN 98209980 U CN98209980 U CN 98209980U CN 2325506 Y CN2325506 Y CN 2325506Y
- Authority
- CN
- China
- Prior art keywords
- pipe nipple
- sucker rod
- centralizer
- centralizing
- saw
- 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 - Lifetime
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Abstract
The utility model relates to a deflection abrasion preventing centralizing device for an oil pumping rod. The deflection abrasion preventing centralizing device for an oil pumping rod is composed of a short joint, an upper sawtooth ring, a lower sawtooth ring, a centralizing body, and a connecting hoop. The upper sawtooth ring and the lower sawtooth ring are fixed on the short joint. The centralizing body is sheathed on the short joint between the upper sawtooth ring and the lower sawtooth ring, and the centralizing body can flexibly rotate and slide from top to bottom on the short joint. Due to the fact that a spiral flow channel is arranged on the centralizing body, thus, the centralizing body can automatically rotate in the working process of an oil pumping rod, and the centralizing body and the inner wall of an oil pipe are uniformly abraded. The service life of the centralizing body is extended, and the service life of the oil pipe and the oil pumping rod is also extended.
Description
The utility model relates to a kind of sucker rod deflection abrasion preventing centralizer.
In Oilfield developing is produced, mainly be pumping production at present.Along with Oilfield developing production, the moisture continuous rising of produced liquid in oil well, because a large amount of oil wells have certain gradient, the eccentric wear that sucker rod and box cupling thereof and tube inner wall produce is more and more serious, shorten the application life of oil pipe and sucker rod greatly, the oil well operation is frequent, has had a strong impact on Oilfield developing production.In order to prevent that sucker rod and box cupling thereof and tube inner wall from producing eccentric wear, will set upright sucker rod.Wherein the patent No. is: 85203887 roller type centralizer is owing to easily block wheel and reason for corrosion, seldom use at present, centralizer commonly used now is the nylon centralizer, and the major defect of this centralizer is: 1, centralizer slides on sucker rod, sets upright weak effect; 2, wear point is fixed, and application life is short, the easy holddown of the fragment that comes off.
The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of self-rotary sucker rod deflection abrasion preventing centralizer is provided.
The purpose of this utility model is achieved in that the sucker rod deflection abrasion preventing centralizer is made up of pipe nipple, box cupling, pipe nipple is the Cylinder that two ends are provided with external screw thread and step, following saw-tooth ring is inserted in getting out of a predicament or an embarrassing situation of pipe nipple and goes up and fixed by pin, last saw-tooth ring and pressure cap embedding connection mutually, the upper end screw thread of pipe nipple is connected with box cupling, box cupling withstands on topping bar and pressure cap being fixed of pipe nipple with pressure cap, is with two ends band saw tooth on the pipe nipple between the upper and lower saw-tooth ring, middle is the centralizer body of helical flow path.
The utility model utilizes the automatic rotation of spiral centralizer body in the sucker rod course of work, makes the even and tube inner wall friction of centralizer body, has alleviated the wearing and tearing of sucker rod to tube inner wall, has prolonged the application life of centralizer body, sucker rod and oil pipe.
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1: sucker rod deflection abrasion preventing centralizer structural representation;
Among the figure: saw-tooth ring under 1-pipe nipple, the 2-, 3-pin, 4-centralizer body,
The last saw-tooth ring of 5-, 6-pressure cap, 7-box cupling;
The sucker rod deflection abrasion preventing centralizer is by pipe nipple 1, box cupling 7 is formed, pipe nipple 1 is provided with the Cylinder of external screw thread and step for two ends, following saw-tooth ring 2 is inserted on the step of pipe nipple 1 and is fixing by pin 3, last saw-tooth ring is connected with pressure cap, the upper end screw thread of pipe nipple is connected with box cupling, box cupling withstands on topping bar and pressure cap being fixed of pipe nipple with pressure cap, when fixing pressure cap, last saw-tooth ring is positioned, make, the tooth difference half tooth distance of following saw-tooth ring, last, following saw-tooth ring 5, be with two ends band saw tooth on the pipe nipple 1 between 2, the centre is the centralizer body 4 of helical flow path, the sawtooth at centralizer body 4 two ends and last, following saw- tooth ring 5,2 tooth is meshed, and the external diameter of centralizer body 4 is slightly less than pipe aperture greater than the external diameter of box cupling 7.Centralizer body 4 adopts the anti-corrosion and high strength plastics to make, and it can rotate flexibly and slide up and down on pipe nipple 1.During use centralizer is installed between two sucker rods, because upper and lower saw-tooth ring is meshed with the tooth at centralizer body two ends, thereby sucker rod in the course of the work, centralizer produces a radially revolving force F at the axial friction of tube inner wall, when descending, helical flow path on the centralizer body is under the effect of liquid impulse force, produce one with F revolving force in the same way, under the effect of above-mentioned one or two revolving force, centralizer body rotates displacement, make the centralizer body uniform wear, prolonged the application life of centralizer body, also prolonged the application life of oil pipe and sucker rod.
Claims (1)
1, a kind of sucker rod deflection abrasion preventing centralizer is by pipe nipple (1), box cupling (7) is formed, it is characterized in that: pipe nipple (1) is provided with the Cylinder of external screw thread and step for two ends, following saw-tooth ring (2) is inserted in getting out of a predicament or an embarrassing situation of pipe nipple (1) and goes up and fixed by pin (3), last saw-tooth ring (5) and pressure cap (6) embedding connection mutually, the upper end screw thread of pipe nipple (1) is connected with box cupling (7), box cupling (7) withstands on topping bar of pipe nipple (1) and pressure cap (6) is fixing with pressure cap (6), last, following saw-tooth ring (5), (2) be with two ends band saw tooth on the pipe nipple between (1), the centre is the centralizer body (4) of helical flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98209980 CN2325506Y (en) | 1998-01-16 | 1998-01-16 | Sucker rod stabilizer to prevent it from being eccentrically worn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98209980 CN2325506Y (en) | 1998-01-16 | 1998-01-16 | Sucker rod stabilizer to prevent it from being eccentrically worn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2325506Y true CN2325506Y (en) | 1999-06-23 |
Family
ID=33965177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98209980 Expired - Lifetime CN2325506Y (en) | 1998-01-16 | 1998-01-16 | Sucker rod stabilizer to prevent it from being eccentrically worn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2325506Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100561109C (en) * | 2007-07-30 | 2009-11-18 | 西安庆华民用***器材有限责任公司 | A kind of initiation system connection block with lock function |
| CN101832111A (en) * | 2010-04-28 | 2010-09-15 | 中国科学院力学研究所 | Bi-directionally sliding pup-joint coupling centralizer |
| CN102191920A (en) * | 2010-03-12 | 2011-09-21 | 王仁前 | Rotary wear-resisting pumping-aid apparatus for pumping rod |
| CN103256012A (en) * | 2012-02-20 | 2013-08-21 | 天津市正方科技发展有限公司 | Multifunctional centralizing and oil increasing device |
-
1998
- 1998-01-16 CN CN 98209980 patent/CN2325506Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100561109C (en) * | 2007-07-30 | 2009-11-18 | 西安庆华民用***器材有限责任公司 | A kind of initiation system connection block with lock function |
| CN102191920A (en) * | 2010-03-12 | 2011-09-21 | 王仁前 | Rotary wear-resisting pumping-aid apparatus for pumping rod |
| CN102191920B (en) * | 2010-03-12 | 2013-03-06 | 王仁前 | Rotary wear-resisting pumping-aid apparatus for pumping rod |
| CN101832111A (en) * | 2010-04-28 | 2010-09-15 | 中国科学院力学研究所 | Bi-directionally sliding pup-joint coupling centralizer |
| CN103256012A (en) * | 2012-02-20 | 2013-08-21 | 天津市正方科技发展有限公司 | Multifunctional centralizing and oil increasing device |
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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 | ||
| CX01 | Expiry of patent term |