CN209244523U - A kind of sinker bar with erection device - Google Patents
A kind of sinker bar with erection device Download PDFInfo
- Publication number
- CN209244523U CN209244523U CN201821975669.2U CN201821975669U CN209244523U CN 209244523 U CN209244523 U CN 209244523U CN 201821975669 U CN201821975669 U CN 201821975669U CN 209244523 U CN209244523 U CN 209244523U
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- CN
- China
- Prior art keywords
- rod
- screw thread
- erection device
- sinker bar
- box cupling
- 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 provides a kind of technical solution of sinker bar with erection device, the body of rod including being provided with multistage elongated necks, multistage elongated necks are provided on the body of rod, the diameter of the elongated necks is less than the diameter of the body of rod, and the outside of the elongated necks is fixed with centralizer；The both ends of the body of rod are respectively arranged with head, polished rod screw thread is provided in the head, the outside of the head is fixed with the stop nut to match with the polished rod screw thread, is threadedly coupled between two adjacent strut members by box cupling, and the connection pretightning force of box cupling is born in the end face of stop nut.The design feature makes the entire body of rod have the function of body of rod exacerbation and eccentric abrasion prevention, and design is rationally, easy to use, ensure that the reliability in weighted lever use process.
Description
Technical field
The utility model relates to field of mechanical technique of pumping, especially a kind of sinker bar with erection device.
Background technique
When oil producing operation, due to oil well hole deviation, well track distortion, oil pipe and sucker rod dilatation etc., make to take out
Beam hanger frequently contacts in upper and lower stroke motion with oil pipe, forms friction pair therebetween, causes the generation of rod and tube partial-wear phenomenon.
Especially when sucker rod downlink, since larger buoyancy and friction in down stroke influence, lower part sucker rod will be answered by biggish bending
Power is transformed to sucker rod to the normal pressure of oil pipe by oil pipe constraint portions bending stress, then increases sucker rod and oil
The frictional force of pipe, to cause the serious eccentric wear of sucker rod and oil pipe, this is also that most sucker rods and oil pipe eccentric wear are sent out
It is raw the reason of the lower part.The eccentric wear well production cycle is much lower compared with normal producing well, and production of normally recovering the oil to oil field brings damage
It loses.
To reduce oil well eccentric wear problem, bar, pipe eccentric wear well are typically employed in eccentric wear well section and use weighted lever and liner oil pipe
Matching used technique reduces the generation of rod and tube partial-wear phenomenon.But after using liner oil pipe, due to the internal diameter of liner oil pipe
Reduce, the piston effect of tubing string increases, and rod string friction in down stroke increases, and changes the stress of rod string, occurs
The sucker rod point of neutralization (eccentric wear position) moves up, and causes the eccentric wear of weighted lever and liner oil pipe.This is present in the prior art
Shortcoming.
Summary of the invention
Technical problem to be solved in the utility model aiming at deficiency of the prior art, and provides one kind
The technical solution of sinker bar with erection device.
This programme is achieved by the following technical measures: a kind of sinker bar with erection device, including setting
There is the body of rod of multistage elongated necks, multistage elongated necks are provided on the body of rod, the diameter of the elongated necks is less than the body of rod
The outside of diameter, the elongated necks is fixed with centralizer；The both ends of the body of rod are respectively arranged with head, are arranged in the head
There is polished rod screw thread, the outside of the head is fixed with the stop nut to match with the polished rod screw thread, two adjacent strut members
Between pass through box cupling and be threadedly coupled, the connection pretightning force of box cupling is born in the end face of stop nut.
The elongated necks include construction section and changeover portion, and the centralizer is fixed on construction section, and the changeover portion is to connect
Connect the arc transition section between construction section and the body of rod.
The conical surface that inclination angle is 9 ° is provided on the polished rod screw thread, it is 9 ° that inclination angle is provided on the stop nut
Taper hole, the conical surface are matched with the taper hole.
The internal screw thread to match with the polished rod screw thread is provided in the box cupling hole of the box cupling.
The material of the centralizer is engineering plastics class, preferably enhancing nylon.
The material of the body of rod is metal class, preferably superior alloy steel.
The utility model has the following beneficial effects:
(1) in the utility model, multistage elongated necks are provided on the body of rod, elongated necks are limited for installing centralizer additional
Centralizer and the body of rod, i.e., be integrally formed by the axial float for having determined centralizer, and this structure plays the function of fixed point righting；
(2) in the utility model, after the both ends of the body of rod use polished rod screw thread, the screw thread and stop nut daub to assemble, by
Stop nut end face bears box cupling and connects pretightning force, guarantees that weighted lever does not generate in the process of running and loosens phenomenon；
(3) centralizer is mounted on body of rod elongated necks, is played the righting sinker bar body of rod, is prevented the work of bar, pipe eccentric wear
With.
The design feature makes the entire body of rod have the function of body of rod exacerbation and eccentric abrasion prevention, and design is rationally, easy to use, guarantees
Reliability in weighted lever use process.
It can be seen that the utility model compared with prior art, has substantive features and progress, the beneficial effect implemented
Fruit is also obvious.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of specific embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the body of rod in the utility model.
In figure, 1 is polished rod screw thread, and 2 be head, and 3 be the conical surface, and 4 be elongated necks, and 4.1 be changeover portion, and 4.2 be construction section, 5
It is box cupling for the body of rod, 6,6.1 be internal screw thread, and 7 be stop nut, and 8 be centralizer.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by a specific embodiment, and its attached drawing is combined, it is right
This programme is illustrated.
By attached drawing as can be seen that a kind of sinker bar with erection device, the bar including being provided with multistage elongated necks
Body 5 is provided with multistage elongated necks 4 on the body of rod 5, and the diameter of the elongated necks 4 is less than the diameter of the body of rod 5, described thin
The outside of long-neck 4 is fixed with centralizer 8.Specifically, the elongated necks 4 include construction section 4.2 and changeover portion 4.1, the righting
Device 8 is fixed on construction section 4.2, and the changeover portion 4.1 is the arc transition section between the connection construction section 4.2 and the body of rod 5.
Centralizer 8 is fixed on construction section 4.2, machining by being molded, and the body of rod 5 is followed to move synchronously.
The both ends of the body of rod 5 are respectively arranged with head 2, and polished rod screw thread 1 is provided in the head 2, the head 2
Outside is fixed with the stop nut 7 to match with the polished rod screw thread 1, is connected between two adjacent strut members 5 by 6 screw thread of box cupling
It connects, the connection pretightning force of box cupling 6 is born in the end face of stop nut 7.The conical surface that inclination angle is 9 ° is provided on the polished rod screw thread 1
3, the taper hole that inclination angle is 9 ° is provided on the stop nut 7, the conical surface is matched with the taper hole.The utility model
In, stop nut 7 is used cooperatively with box cupling 6, realizes the threaded connection between adjacent two strut members 5.Stop nut 7 is set
It sets, is equivalent on the body of rod 5 and is provided with the shaft shoulder, play the role of limit, positioning to box cupling 6, in addition, the end face of stop nut 7
It can also bear box cupling 6 and connect pretightning force, guarantee that sinker bar does not generate in the process of running and loosen phenomenon.
The internal screw thread 6.1 to match with the polished rod screw thread 1 is provided in the box cupling hole of the box cupling 6.
The material of the centralizer 8 is engineering plastics class, preferably enhancing nylon, has excellent anticorrosion antiwear performance.Institute
The material for stating the body of rod 5 is metal class, preferably superior alloy steel.
Although above-mentioned be described in conjunction with specific embodiment of the attached drawing to utility model, not to the utility model
The limitation of protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, this field
Technical staff does not need to make the creative labor the various modifications or changes that can be made still in the protection scope of the utility model
Within.
Claims (6)
1. a kind of sinker bar with erection device, it is characterized in that: include the body of rod (5) for being provided with multistage elongated necks, it is described
It is provided on the body of rod (5) multistage elongated necks (4), the diameter of the elongated necks (4) is less than the diameter of the body of rod (5), described thin
The outside of long-neck (4) is fixed with centralizer (8)；The both ends of the body of rod (5) are respectively arranged with head (2), on the head (2)
It is provided with polished rod screw thread (1), the outside of the head (2) is fixed with the stop nut to match with the polished rod screw thread (1)
(7), it is threadedly coupled between adjacent two strut members (5) by box cupling (6), the company of box cupling (6) is born in the end face of stop nut (7)
Connect pretightning force.
2. the sinker bar according to claim 1 with erection device, it is characterized in that: the elongated necks (4) include peace
Dress section (4.2) and changeover portion (4.1), the centralizer (8) are fixed on construction section (4.2), and the changeover portion (4.1) is described
Arc transition section between construction section (4.2) and the body of rod (5).
3. the sinker bar according to claim 1 or 2 with erection device, it is characterized in that: on the polished rod screw thread (1)
It is provided with the conical surface (3) that inclination angle is 9 °, the taper hole that inclination angle is 9 °, the conical surface (3) are provided on the stop nut (7)
It is matched with the taper hole.
4. the sinker bar according to claim 1 or 2 with erection device, it is characterized in that: the box cupling of the box cupling (6)
The internal screw thread (6.1) to match with the polished rod screw thread (1) is provided in hole.
5. the sinker bar according to claim 1 with erection device, it is characterized in that: the material of the centralizer (8)
For engineering plastics class, preferably enhancing nylon.
6. the sinker bar according to claim 1 with erection device, it is characterized in that: the material of the body of rod (5) is
Metal class, preferably superior alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821975669.2U CN209244523U (en) | 2018-11-28 | 2018-11-28 | A kind of sinker bar with erection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821975669.2U CN209244523U (en) | 2018-11-28 | 2018-11-28 | A kind of sinker bar with erection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209244523U true CN209244523U (en) | 2019-08-13 |
Family
ID=67529710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821975669.2U Active CN209244523U (en) | 2018-11-28 | 2018-11-28 | A kind of sinker bar with erection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209244523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211570A (en) * | 2020-10-14 | 2021-01-12 | 中油智科(吉林)技术装备有限公司 | Centralizer and preparation method thereof |
-
2018
- 2018-11-28 CN CN201821975669.2U patent/CN209244523U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211570A (en) * | 2020-10-14 | 2021-01-12 | 中油智科(吉林)技术装备有限公司 | Centralizer and preparation method thereof |
| CN112211570B (en) * | 2020-10-14 | 2023-01-24 | 中油智科(吉林)技术装备有限公司 | Centralizer and preparation method thereof |
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