CN203547575U - Roller centralizer - Google Patents
Roller centralizer Download PDFInfo
- Publication number
- CN203547575U CN203547575U CN201320575630.2U CN201320575630U CN203547575U CN 203547575 U CN203547575 U CN 203547575U CN 201320575630 U CN201320575630 U CN 201320575630U CN 203547575 U CN203547575 U CN 203547575U
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- China
- Prior art keywords
- centralizer
- roller
- locking screw
- rollers
- main body
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to an oilfield tubing eccentric wear prevention technique, in particular to a roller centralizer comprising a centralizer body, rollers, locking screw holes, five diagonal grooves, and roller shafts. The diagonal grooves in full length are arranged in the centralizer body. Two rollers are arranged between each two diagonal grooves. One locking screw hole is arranged between each two rollers. One roller sleeve is disposed on each roller shaft in a sleeving manner. The roller shafts are fixed in the centers of square holes of the centralizer body. A locking screw is disposed in the center of each locking screw hole.
Description
technical field
The utility model relates to a kind of oil pipeline anti-eccentric wear technology, especially rolling wheel centralizer.
background technology
Along with the oil field development time increases, oil, well sleeve pipe is aging and prevent that problem is more and more outstanding.Sleeve pipe particularly, along with the increasing of mining inetesity, pump is darker under more, and various well stimulations are constantly strengthened, and chemistry and the mechanical measure of the series such as pressure break, acidifying, de-plugging, shutoff all can cause damage to sleeve pipe, and the fracture of sleeve pipe, inconsistent phenomenon are more and more.In this case, have to carry out sidetracking overhaul.Therefore, the quantity of directional well, horizontal well is increasing gradually.The increase of the inclined shaft such as directional well and horizontal well, the eccentric wear of sleeve pipe is again a distinct issues.Particularly gradient is greater than the producing well of 8 degree, because production tube removes the increase of number of times, and in the outside of the tilting section of sleeve pipe, more and more severe by the wearing and tearing of oil pipe joint hoop.Deep sleeve pipe tilting section is according to the demonstration of down-hole photograph data, and polishing scratch groove is circular-arc.Gash depth not etc., shallow 2-4 millimeter, dark 4-7 millimeter, approaches mill thoroughly.After top production string puts forward, sloping portion also has noticeable wear groove.Once and casing wear or millions of unit do not take measures, oil-water well is only scrapped, lose larger.Therefore the control of the sleeve pipe in oil field is a large problem, and the anti-eccentric wear of sleeve pipe urgent problem especially.
summary of the invention
The purpose of this utility model is to provide rolling wheel centralizer, it has solved the shortcoming that other technology exists, the purpose of this utility model is achieved in that it is to be formed by connecting by centralizer main body, roller, locking screw holes, skewed slot, roller shaft, has five entire body skewed slots in centralizer main body; In the middle of skewed slot and skewed slot, there are two rollers, in the middle of two rollers, have locking screw holes; Roller housing is on roller shaft, and roller shaft is fixed in the middle of the square hole of centralizer main body; In the middle of locking screw holes, there is lock-screw.
Using method: general tubing centrilizer of every oil pipe, is arranged on from 1 meter of of tubing coupling; During installation, be sure not centralizer direction oppositely, should make the large end of centralizer pin clamp is top; Before lower centralizer, must to casing inner diameter, test with the drift size gauge tool that is slightly larger than centralizer external diameter, have the inadaptable lower tubing centrilizer of casing string of fracture, calliper.
The utility model has extended the application life of sleeve pipe.
accompanying drawing explanation
Fig. 1 is the front view of rolling wheel centralizer, in figure 1, centralizer main body 2, roller 3, locking screw holes 4, skewed slot
Fig. 2 is the top view of rolling wheel centralizer, in figure 1, centralizer main body 2, roller 4, skewed slot 5, roller shaft
the specific embodiment
Embodiment 1, the utility model are to be formed by connecting by centralizer main body 1, roller 2, locking screw holes 3, skewed slot 4, roller shaft 5, have five entire body skewed slots 4 in centralizer main body 1; In the middle of skewed slot 4 and skewed slot 4, there are two rollers 2.
Embodiment 2, roller 2 are enclosed within on roller shaft 5, and roller shaft 5 is fixed in the middle of the square hole of centralizer main body 1.
In the middle of embodiment 3, two rollers 2, there is locking screw holes 3; In the middle of locking screw holes 3, there is lock-screw.
Claims (3)
1. rolling wheel centralizer, it is to be formed by connecting by centralizer main body (1), roller (2), locking screw holes (3), skewed slot (4), roller shaft (5), it is characterized in that: in centralizer main body (1), have five entire body skewed slots (4); In the middle of skewed slot (4) and skewed slot (4), there are two rollers (2).
2. rolling wheel centralizer according to claim 1, is characterized in that: it is upper that roller (2) is enclosed within roller shaft (5), and roller shaft (5) is fixed in the middle of the square hole of centralizer main body (1).
3. rolling wheel centralizer according to claim 1, is characterized in that: in the middle of two rollers (2), have locking screw holes (3); In the middle of locking screw holes (3), there is lock-screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320575630.2U CN203547575U (en) | 2013-09-17 | 2013-09-17 | Roller centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320575630.2U CN203547575U (en) | 2013-09-17 | 2013-09-17 | Roller centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203547575U true CN203547575U (en) | 2014-04-16 |
Family
ID=50465704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320575630.2U Expired - Fee Related CN203547575U (en) | 2013-09-17 | 2013-09-17 | Roller centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203547575U (en) |
-
2013
- 2013-09-17 CN CN201320575630.2U patent/CN203547575U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20140917 |
|
| EXPY | Termination of patent right or utility model |