CN202073507U - Wear-preventive centralizer of sleeve - Google Patents
Wear-preventive centralizer of sleeve Download PDFInfo
- Publication number
- CN202073507U CN202073507U CN2011201194720U CN201120119472U CN202073507U CN 202073507 U CN202073507 U CN 202073507U CN 2011201194720 U CN2011201194720 U CN 2011201194720U CN 201120119472 U CN201120119472 U CN 201120119472U CN 202073507 U CN202073507 U CN 202073507U
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- CN
- China
- Prior art keywords
- roller
- centralizer
- sleeve pipe
- sleeve
- installation shaft
- 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 an oil and gas field rework operation tool, and more specifically, relates to a wear-preventive centralizer of a sleeve for the down-hole operation of an inclined shaft. The centralizer provided includes a body and a centralizing block arranged on the body, the centralizing block is composed of a roller and a roller installing shaft, the body is provided with an installing groove parallel to the axial direction of the body, the roller installing shaft is arranged in the installing groove, the axle center of the roller installing shaft is parallel to that of the body, and the roller is arranged in the installing shaft. The wear-preventive centralizer provided replaces the rigidity structure with the roller structure and replaces the sliding friction with the rolling friction, thereby greatly reducing the friction between a drilling rod joint and the inner wall of the sleeve, and further protecting the sleeve from being worn or being minimally worn.
Description
Technical field:
The utility model relates to oil gas field workover treatment instrument, relates more specifically to a kind of sleeve pipe abrasionproof centralizer that inclined shaft underground work is used.
Background technology:
In the petroleum works field (drilling well, formation testing, well workover), run into a large amount of milling (cover mills) construction through regular meeting, the drilling tool overwhelming majority rotating disk drives, and drilling tool is in rotation status during milling.Yet, in the long rotary course of drilling tool, because the rotary oscillation of tubing string, tool joint is with producing a kind of friction between the internal surface of sleeve pipe, cause internal surface of sleeve pipe (or tool joint) wearing and tearing, sleeve pipe repeatedly takes place in recent years, and (protective casing of indivedual complicated wells and production string repair in the operation at brill and also be worn through, serious meeting distortion or bad break, causes sleeve pipe to damage by the situation of eccentric wear, the down-hole occurs complicated), especially in inclined shaft, carry out long-term milling operation; The part well has used old-fashioned centralizer, but also can produce certain wearing part well in operation and use old-fashioned centralizer sleeve pipe, though old-fashioned centralizer has been avoided the contact of tool joint with internal surface of sleeve pipe, has certain abrasionproof function, but, because between wiper block (also being brake pad) and the internal surface of sleeve pipe is that arc surface contacts, and still has certain frictional force between the two, wiper block has wear effects equally to internal surface of sleeve pipe.
The utility model content:
The purpose of this utility model provides a kind of sleeve pipe abrasionproof centralizer; replaced rigid structures with roller structure; replaced sliding friction with rolling friction, significantly reduced tool joint, and then protective casing is not worn or weares and teares minimumly with the frictional force between the internal surface of sleeve pipe.
For achieving the above object, the utility model is by the following technical solutions:
A kind of sleeve pipe abrasionproof centralizer that the utility model provides, comprise the wiper block that is provided with on body and the body, described wiper block is made up of roller and roller installation shaft, have the mounting groove parallel on the described body with the body axial direction, be provided with the roller installation shaft in the described mounting groove, the axle center of described roller installation shaft and described body axis parallel, described roller is installed on the described installation shaft.
In a kind of sleeve pipe abrasionproof centralizer technical scheme that the utility model provides, have at least two mounting grooves on the described body.
In another preferred a kind of sleeve pipe abrasionproof centralizer technical scheme that the utility model provides, have three mounting grooves on the described body, correspondence is provided with three installation shaft, and a roller is installed on described each installation shaft.
In the preferred a kind of sleeve pipe abrasionproof centralizer technical scheme again that the utility model provides, described three mounting grooves are that center, the center of circle is symmetrical arranged with the axle center of body.
Because the beneficial effect that has adopted technique scheme, the utility model to obtain is:
1, replaced rigid structures with roller structure, replaced sliding friction, so just significantly reduced tool joint, and then protective casing is not worn or weares and teares minimumly with the frictional force between the internal surface of sleeve pipe with rolling friction.
2, almost do not have the eccentric wear sleeve pipe in the operation of this well construction, cover has been in control good protection.
3, sleeve pipe abrasionproof centralizer had both played the abrasionproof effect, also working string had been played and had set upright and stablizing effect.
Description of drawings
Fig. 1 is a kind of sleeve pipe abrasionproof centralizer front view;
Fig. 2 is a kind of sleeve pipe abrasionproof centralizer radial section schematic diagram;
Wherein, 1-body, 2-wiper block, 3-roller.
The specific embodiment
Below in conjunction with embodiment utility model is described in further detail.
Embodiment 1:
Shown in Fig. 1-4, a kind of sleeve pipe abrasionproof of this routine utility model centralizer, comprise the wiper block 2 that is provided with on body 1 and the body 1, wiper block 2 is made up of roller 3 and roller installation shaft, have on the body 1 and the parallel mounting groove of body 1 axial direction, mounting groove is at least two, preferred three of this example, be provided with the roller installation shaft in the mounting groove, the axle center of roller installation shaft and described body 1 axis parallel, roller 3 is installed on the described installation shaft, three mounting grooves are that center, the center of circle is symmetrical arranged with the axle center of body 1, correspondence is provided with three installation shaft, and it is that the axle center is that center, the center of circle is symmetrical arranged with body 1 that 3, three mounting grooves of a roller are installed on each installation shaft.
Ha603Jing is the complicated fishing well of a bite of Tarim Basin, uses sleeve pipe abrasionproof centralizer of the present utility model during the 10-12 months in 2010 for the first time; By the tool joint and the centralizer appearance situation of having observed out--almost be not worn, be enough to explanation according to metal object friction and the basic general knowledge that is rubbed: almost do not have the eccentric wear sleeve pipe in the operation of this well construction, cover has been in control good protection.Sleeve pipe abrasionproof centralizer had both played the abrasionproof effect, also working string had been played and had set upright and stablizing effect.
Should be noted that at last: above embodiment only is not intended to limit in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to the foregoing description, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement the specific embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of this claim scope.
Claims (4)
1. sleeve pipe abrasionproof centralizer, comprise the wiper block (2) that body (1) and body (1) upward are provided with, it is characterized in that: described wiper block (2) is made up of roller (3) and roller installation shaft, have on the described body (1) and the parallel mounting groove of body (1) axial direction, be provided with the roller installation shaft in the described mounting groove, the axle center of described roller installation shaft and described body (1) axis parallel, described roller (3) is installed on the described installation shaft.
2. a kind of sleeve pipe abrasionproof centralizer as claimed in claim 1, it is characterized in that: described body has at least two mounting grooves on (1).
3. a kind of sleeve pipe abrasionproof centralizer as claimed in claim 2 is characterized in that: have three mounting grooves on the described body (1), correspondence is provided with three installation shaft, and a roller (3) is installed on described each installation shaft.
4. a kind of sleeve pipe abrasionproof centralizer as claimed in claim 3 is characterized in that: described three mounting grooves are that center, the center of circle is symmetrical arranged with the axle center of body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201194720U CN202073507U (en) | 2011-04-21 | 2011-04-21 | Wear-preventive centralizer of sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201194720U CN202073507U (en) | 2011-04-21 | 2011-04-21 | Wear-preventive centralizer of sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073507U true CN202073507U (en) | 2011-12-14 |
Family
ID=45111613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201194720U Expired - Lifetime CN202073507U (en) | 2011-04-21 | 2011-04-21 | Wear-preventive centralizer of sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202073507U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131348A (en) * | 2017-05-23 | 2017-09-05 | 广船国际有限公司 | Valve rod support meanss |
| CN107842321A (en) * | 2017-10-07 | 2018-03-27 | 西南石油大学 | One kind is used for Deep Water Drilling Riser section drilling rod righting and shoe |
| CN107905740A (en) * | 2017-09-25 | 2018-04-13 | 西南石油大学 | A kind of Deep Water Drilling Riser and drilling rod abrasionproof anti-attrition device |
| CN111894497A (en) * | 2020-07-27 | 2020-11-06 | 中国海洋石油集团有限公司 | Shunt casing protection device |
-
2011
- 2011-04-21 CN CN2011201194720U patent/CN202073507U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131348A (en) * | 2017-05-23 | 2017-09-05 | 广船国际有限公司 | Valve rod support meanss |
| CN107131348B (en) * | 2017-05-23 | 2019-04-26 | 广船国际有限公司 | Valve rod support device |
| CN107905740A (en) * | 2017-09-25 | 2018-04-13 | 西南石油大学 | A kind of Deep Water Drilling Riser and drilling rod abrasionproof anti-attrition device |
| CN107905740B (en) * | 2017-09-25 | 2019-10-01 | 西南石油大学 | A kind of Deep Water Drilling Riser and drilling rod abrasionproof anti-attrition device |
| CN107842321A (en) * | 2017-10-07 | 2018-03-27 | 西南石油大学 | One kind is used for Deep Water Drilling Riser section drilling rod righting and shoe |
| CN111894497A (en) * | 2020-07-27 | 2020-11-06 | 中国海洋石油集团有限公司 | Shunt casing protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |
|
| CX01 | Expiry of patent term |