CN2584804Y - Combined sucker rod centering guide - Google Patents
Combined sucker rod centering guide Download PDFInfo
- Publication number
- CN2584804Y CN2584804Y CN 02286185 CN02286185U CN2584804Y CN 2584804 Y CN2584804 Y CN 2584804Y CN 02286185 CN02286185 CN 02286185 CN 02286185 U CN02286185 U CN 02286185U CN 2584804 Y CN2584804 Y CN 2584804Y
- Authority
- CN
- China
- Prior art keywords
- sucker rod
- utility
- model
- rod centering
- centering guide
- 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 combined sucker rod centering guide belonging to an improvement on the structure of a sucker rod centering guide used by an oil pumping well. The utility model is formed by the corresponding combination of two shell bodies, wherein, a semicircular concave slot is arranged at the middle part of each of the shell bodies, the outer edge of each shell body is cambered, and the shell bodies are connected with each other in a detachable fastening connection mode. The utility model has the advantage of simple structure. At installation time, the semicircular concave slots of the two corresponding shell bodies are just required to inwards correspondingly coating the outer surface of a sucker rod, and fastening elements are used for fastening, and thereby, installation is very convenient. When the utility model is used, the sucker rod can be effectively protected from wear.
Description
Technical field
It is a kind of to the improvement of pumpingh well with the oil pumping rod centering device structure that the utility model belongs to.
Background technology
Centralizer is a kind of downhole tool that is widely used in the oil field pumping well, and its effect mainly is to prevent from that sucker rod is in operation to take place to rub partially, and then guarantees the operate as normal of sucker rod, oil pipe and oil well pump.Before the utility model was realized, pumpingh well mainly contained roller type, integrated casting type and piece formula centralizer with the structure of oil pumping rod centering device in the oil field.Wherein the roller type centralizer is because roller contacts with the oil pick-up tube forward, and the friction between roller and the oil pipe becomes sliding friction by rolling friction, thereby has strengthened the abrasion of roller and oil pipe.So sucker rod recurrent teeter when work is easy to make roller stuck, moves the wearing and tearing oil pipe together thereby make sucker rod drive centralizer; The integrated casting type centralizer be owing to when pouring into a mould on sucker rod, need heat sucker rod, and then cause the annealing of sucker rod, and its tensile strength is reduced; Though piece formula centralizer structure is more reasonable, its processing technology complexity, price is higher.
Summary of the invention
The purpose of this utility model is: a kind of separating-closing type oil pumping rod centering device is provided, and then has solved the problem that exists in the above-mentioned background technology.
Technical solution of the present utility model is, the separating-closing type oil pumping rod centering device is constituted relatively by two housings, and there is semi-circular recesses the centre of described housing.The radius of this semi-circular recesses is less than or equal to the maximum radius of sucker rod.
The housing outer is an arc, and radius is less than the internal diameter of oil pipe.Connect in dismountable mode of being fastenedly connected between the housing.
Structure of the present utility model is very simple.During installation, only need the inside correspondence of the semi-circular recesses of two relative housings is coated on the external surface of sucker rod, and get final product, and then make installation very convenient so that securing member is fastening.Can effectively protect sucker rod not frayed during use.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the vertical view of accompanying drawing 1.
In the accompanying drawing; Housing 1, semi-circular recesses 2, screw 3, bolt 4, housing outer 5.
Embodiment
The separating-closing type oil pumping rod centering device is constituted relatively by housing 1, and there is semi-circular recesses 2 centre of described housing.The radius of this semi-circular recesses is less than or equal to the radius of sucker rod.
Housing outer 5 is an arc, and radius is less than the internal diameter of oil pipe.Housing on two positions a screw 3 that has internal thread is arranged respectively up and down, can in screw, be fastenedly connected between the housing with bolt 4.
Claims (2)
1. the separating-closing type oil pumping rod centering device is characterized in that being constituted relatively by two housings, and there is semi-circular recesses the centre of described housing.
2. separating-closing type oil pumping rod centering device according to claim 1 is characterized in that connecting in dismountable mode of being fastenedly connected between the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02286185 CN2584804Y (en) | 2002-11-21 | 2002-11-21 | Combined sucker rod centering guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02286185 CN2584804Y (en) | 2002-11-21 | 2002-11-21 | Combined sucker rod centering guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2584804Y true CN2584804Y (en) | 2003-11-05 |
Family
ID=33746950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02286185 Expired - Fee Related CN2584804Y (en) | 2002-11-21 | 2002-11-21 | Combined sucker rod centering guide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2584804Y (en) |
-
2002
- 2002-11-21 CN CN 02286185 patent/CN2584804Y/en not_active Expired - Fee Related
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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 |