CN2799839Y - Centralizer of pumping rod - Google Patents
Centralizer of pumping rod Download PDFInfo
- Publication number
- CN2799839Y CN2799839Y CN 200520083859 CN200520083859U CN2799839Y CN 2799839 Y CN2799839 Y CN 2799839Y CN 200520083859 CN200520083859 CN 200520083859 CN 200520083859 U CN200520083859 U CN 200520083859U CN 2799839 Y CN2799839 Y CN 2799839Y
- Authority
- CN
- China
- Prior art keywords
- centralizing
- oil pipe
- oil
- centralizer
- centralizer body
- 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 discloses a novel centralizing device for a sucker rod. The centralizing device is composed of a centralizing body (2), an upper joint (1), a lower joint (4) and a centralizing external pipe (3), wherein the centralizing body (2) is a hollow rod, the external circumference is provided with a centralizing external pipe (3) which is matched with the hollow rod, the centralizing external pipe (3) is connected with an oil pipe by a thread, the length of the centralizing external pipe is identical with the stroke of an oil pumping machine, the upper part and the lower part of the centralizing body (2) are provided with an upper joint (1) and a lower joint (4), and the upper joint (1) and the lower joint (4) are provided with a plurality of side holes which are communicated with internal holes of the centralizing body (2). In the process of pumping oil, the centralizing body (2) moves in the centralizing external pipe (3) upwards and downwards, sucker rod is kept to be in the oil pipe and to be centered, well fluid in an oil pipe at the lower part of the centralizing body (2) enters the internal holes of the centralizing body (2) through the side holes of the lower joint (4) and is discharged into an oil pipe at the upper part of the centralizing body through the side holes of the upper joint (4), and the normal flow of the upper and the lower well fluid is realized.
Description
Technical field:
The utility model relates to a kind of novel sucker rod erection device, is specially adapted in the inclined shaft mechanical oil production system.
Background technology:
In the bar oil-extracting well was arranged, particularly in deep-well or the inclined shaft, sucker rod was flexible in the oil pipe content at present, the phase attrition in upper and lower stroke of oil pipe, sucker rod occurred and rubbed and cause sucker rod partial wear, therefore, needed the lower sucker rod centralizer to solve the eccentric wear problem.Existing oil pumping rod centering device kind is more, mainly contain two big classes: a class is the rolling centralizer, when going into the well oil pumping rod centering device is connected on the rod string, rotates along with moving up and down of rod string drives roller, to reduce the wearing and tearing between sucker rod and the oil pipe.Roller rolls on tube inner wall, and roller material adopts the higher metal material of hardness, and when the down-hole shakes out or other mechanical admixture, roller is often caused setting upright inefficacy by " stuck " in the course of the work, because wearing and tearing oil pipe in hardness higher position has aggravated the oil pipe wearing and tearing; Another kind of is the nylon centralizer; make by nylon or other Wear-resistant material; be injection-moulded on the thin neck of centralizer central axis or sky is enclosed within on the centralizer central axis; when going into the well oil pumping rod centering device is connected on the rod string; contact with oil pipe by nylon; prevent the eccentric wear of sucker rod and oil pipe; because the abrasive resistance of nylon is lower; cause the nylon centralizer shorter application life; thereby centralizer lost efficacy after nylon may wear to a certain degree, and the back centralizer that lost efficacy does not just have the effect of protection sucker rod.
Summary of the invention:
It is a kind of simple in structure that the purpose of this utility model is to provide, and sets upright effectively, wear-resistant, not influenced by down-hole silt or other mechanical admixture, and the sucker rod erection device that can be repeatedly used.
The utility model is achieved in that this erection device is mainly by centralizer body with set upright joint and form, its centralizer body is a hollow stem, periphery have one match with it set upright outer tube, setting upright pipe is linked by screw thread and oil pipe, it is consistent with the stroke of oil pumper to set upright outer length of tube, centralizer body has top connection and lower contact up and down, and last lower contact has a plurality of side openings that communicate with the centralizer body endoporus, and its centralizer body is linked by last lower contact and sucker rod.During use, to set upright outer tube earlier and be serially connected in the tubing string design attitude, with the serious well section of oil pipe G.I.H eccentric wear, centralizer body is serially connected in the sucker rod roofbolt, it is interior to the centralizer body outer tube to be lowered to oil pipe, thereby play centralizing function, in oil pumping process, centralizer body moves up and down in setting upright outer tube, keeps sucker rod placed in the middle in oil pipe, thereby plays centralizing function, prevent sucker rod partial wear, well liquid in the oil pipe of centralizer body bottom enters the centralizer body endoporus through the lower contact side opening, enters in the oil pipe on centralizer body top the proper flow of the liquid of going into the well in the realization through the top connection side opening.
Description of drawings:
Fig. 1 is the utility model structure principle chart
The specific embodiment:
This erection device mainly by centralizer body (2), go up lower contact (1) (4), set upright outer tube (3) and form, its centralizer body (2) is a hollow stem, periphery have one match with it set upright outer tube (3), setting upright outer tube (3) is linked by screw thread and oil pipe, it is consistent with the stroke of oil pumper to set upright outer tube (3) length, centralizer body (2) has top connection (1) and lower contact (4) up and down, last lower contact (1) (4) has a plurality of side openings that communicate with centralizer body (2) endoporus, and its centralizer body (2) is linked by last lower contact (1) (4) and sucker rod.During use, to set upright outer tube (3) earlier and be serially connected in the tubing string design attitude, with the serious well section of oil pipe G.I.H eccentric wear, centralizer body (2) is serially connected in the sucker rod roofbolt, be lowered in the oil pipe to setting upright in the outer tube (3), thereby play centralizing function, in oil pumping process, centralizer body (2) moves up and down in setting upright outer tube (3), keeps sucker rod placed in the middle in oil pipe, thereby plays centralizing function, prevent sucker rod partial wear, well liquid in the oil pipe of centralizer body (2) bottom enters centralizer body (2) endoporus through lower contact (4) side opening, enters in the oil pipe of centralizer body top the proper flow of the liquid of going into the well in the realization through top connection (1) side opening.
Claims (1)
1, a kind of novel sucker rod erection device, it by centralizer body (2), go up lower contact (1) (4), set upright outer tube (3) and form, it is characterized in that centralizer body (2) is a hollow stem, periphery have one match with it set upright outer tube (3), setting upright outer tube (3) is linked by screw thread and oil pipe, it is consistent with the stroke of oil pumper to set upright outer tube (3) length, and centralizer body (2) has top connection (1) and lower contact (4) up and down, and last lower contact (1) (4) has a plurality of side openings that communicate with centralizer body (2) endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520083859 CN2799839Y (en) | 2005-05-31 | 2005-05-31 | Centralizer of pumping rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520083859 CN2799839Y (en) | 2005-05-31 | 2005-05-31 | Centralizer of pumping rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2799839Y true CN2799839Y (en) | 2006-07-26 |
Family
ID=36842337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520083859 Expired - Fee Related CN2799839Y (en) | 2005-05-31 | 2005-05-31 | Centralizer of pumping rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2799839Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047552A (en) * | 2014-05-20 | 2014-09-17 | 石东海 | Wear-resisting centralizer structure of sucker rod of oil well |
-
2005
- 2005-05-31 CN CN 200520083859 patent/CN2799839Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047552A (en) * | 2014-05-20 | 2014-09-17 | 石东海 | Wear-resisting centralizer structure of sucker rod of oil well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |