CN202348154U - Rolling wheel type centering device - Google Patents
Rolling wheel type centering device Download PDFInfo
- Publication number
- CN202348154U CN202348154U CN 201120526054 CN201120526054U CN202348154U CN 202348154 U CN202348154 U CN 202348154U CN 201120526054 CN201120526054 CN 201120526054 CN 201120526054 U CN201120526054 U CN 201120526054U CN 202348154 U CN202348154 U CN 202348154U
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- China
- Prior art keywords
- centralizer
- roller
- external screw
- bearing pin
- screw thread
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of centering devices for well drilling, in particular to a rolling wheel type centering device, which comprises a centering body and rolling wheels. A through hole is arranged in the middle of the centering body along the axial direction, at least three pairs of convex blocks are distributed along the circumference of the outer side of the centering body, an installing cavity is formed between each pairs of convex blocks, the rolling wheels are installed in the installing cavities, and the diameter of the rolling wheels is larger than the height of the convex blocks. The rolling wheel type centering device is reasonable and compact in structure and convenient to use, pin shafts are fixedly installed in the installing cavities, the rolling wheels capable of rotating are installed on the pin shafts, and the rolling wheel type centering device has the advantages of being stable, reliable, low in replace cost and easy to process.
Description
Technical field
the utility model relates to the well drilling centralizer technical field, is a kind of roller type centralizer.
Background technology
In Process of Oil Well Drilling, centralizer is widely applied in the drilling well industry owing to centralizing function
; Present centralizer generally is the centralizer of rigidity or diameter adjustable, and the position that contacts with the borehole wall is fixed, and it is comparatively serious to run into the long back wearing and tearing of firm hard formation or service time; Set upright the function degradation failure after the wearing and tearing; And its wiper block is integral type or is detachable, but replacement cost is higher, can't satisfy the drilling well requirement.
Summary of the invention
the utility model provides a kind of roller type centralizer; Overcome the deficiency of above-mentioned prior art, it can effectively solve existing centralizer in that to run into the long back wearing and tearing of firm hard formation or service time comparatively serious and make and set upright function degradation failure and replacement cost problem of higher.
The technical scheme of
the utility model realizes through following measure: a kind of roller type centralizer comprises centralizer body and roller; Middle part at centralizer body has through hole vertically, along circle distribution at least three pairs of projections is arranged in the outside of centralizer body, forms installation cavity between every pair of projection, and roller is installed in installation cavity, and the diameter of roller is greater than the height of projection.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
Can be fixed with baffle plate between the left end of
above-mentioned every pair of projection, be fixed with baffle plate between the right-hand member of every pair of projection.
The external surface of
above-mentioned projection can be circular arc.
are above-mentioned can be installed with bearing pin in installation cavity, roller is installed on bearing pin.
The two ends of
above-mentioned bearing pin can have external screw thread respectively, in installation cavity, have and the corresponding screwed hole of bearing pin, and bearing pin is fixedly mounted in the installation cavity through screwed hole.
above-mentioned left part at centralizer body can have internal thread or external screw thread, at the right part of centralizer body internal thread or external screw thread is arranged.
the utility model reasonable and compact in structure, easy to use, in installation cavity, be installed with bearing pin, the roller that can rotate is installed on bearing pin, have reliable and stable, replacement cost is low and be easy to machining characteristics.
Description of drawings
accompanying drawing 1 is looked the sectional structure sketch map for the master of the utility model most preferred embodiment.
accompanying drawing 2 is that the A-A of accompanying drawing 1 is to the sectional structure sketch map.
Coding in
accompanying drawing is respectively: 1 is centralizer body, and 2 is roller, and 3 is bearing pin, and 4 is projection, and 5 is installation cavity, and 6 is through hole, and 7 is baffle plate.
The specific embodiment
the utility model does not receive the restriction of following embodiment, can confirm concrete embodiment according to the technical scheme and the actual conditions of the utility model.
are in the utility model; For the ease of describing; The description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description 2, as: the position relation of forward and backward, upper and lower, left and right etc. is what to confirm according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
like accompanying drawing 1, shown in 2, this roller type centralizer comprises centralizer body 1 and roller 2; Middle part at centralizer body 1 has through hole 6 vertically, along circle distribution at least three pairs of projections 4 is arranged in the outside of centralizer body 1, forms installation cavity 5 between every pair of projection 4, and roller 2 is installed in installation cavity 5, and the diameter of roller 2 is greater than the height of projection 4.Like this; Running into hole instability, play centralizing function during situation such as undergauge, dog-leg, be lowered in the well after the left part of centralizer body 1 and right part and rig connect during work; Roller 2 in the installation cavity 5 plays centralizing function; The assurance drilling tool is placed in the middle, and institute's drilling well eye is rule comparatively, can also carry out reaming operation and satisfy requirement of engineering.
Can according to actual needs above-mentioned rollers formula centralizer be done further to optimize or/and improve:
shown in accompanying drawing 2, are fixed with baffle plate 7 between the left end of every pair of projection 4, be fixed with baffle plate 7 between the right-hand member of every pair of projection 4.Like this, can avoid the 2 experience bumps of the roller in the installation cavity 5 in existing process.
shown in accompanying drawing 1, as required, the external surface of projection 4 is circular arc.
like accompanying drawing 1, shown in 2, are installed with bearing pin 3 in installation cavity 5, roller 2 is installed on bearing pin 3.Roller is preferably more than 3.
shown in accompanying drawing 1, the two ends of bearing pin 3 have external screw thread respectively, in installation cavity 5, have and bearing pin 3 corresponding screwed holes, and bearing pin 3 is fixedly mounted in the installation cavity 5 through screwed hole.Like this, be convenient to installation and removal.
have internal thread or external screw thread at the left part of centralizer body 1 shown in accompanying drawing 2, at the right part of centralizer body 1 internal thread or external screw thread are arranged.
above technical characterictic has constituted the most preferred embodiment of the utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
Claims (10)
1. a roller type centralizer is characterized in that comprising centralizer body and roller; Middle part at centralizer body has through hole vertically, along circle distribution at least three pairs of projections is arranged in the outside of centralizer body, forms installation cavity between every pair of projection, and roller is installed in installation cavity, and the diameter of roller is greater than the height of projection.
2. roller type centralizer according to claim 1 is characterized in that being fixed with baffle plate between the left end of every pair of projection, is fixed with baffle plate between the right-hand member of every pair of projection.
3. roller type centralizer according to claim 1 and 2 is characterized in that the external surface of projection is circular arc.
4. roller type centralizer according to claim 1 and 2 is characterized in that being installed with bearing pin in the installation cavity, and roller is installed on bearing pin.
5. roller type centralizer according to claim 3 is characterized in that being installed with bearing pin in the installation cavity, and roller is installed on bearing pin.
6. roller type centralizer according to claim 4 is characterized in that the two ends of bearing pin have external screw thread respectively, in installation cavity, has and the corresponding screwed hole of bearing pin, and bearing pin is fixedly mounted in the installation cavity through screwed hole.
7. roller type centralizer according to claim 1 and 2 is characterized in that the left part of centralizer body has internal thread or external screw thread, at the right part of centralizer body internal thread or external screw thread is arranged.
8. roller type centralizer according to claim 3 is characterized in that the left part of centralizer body has internal thread or external screw thread, at the right part of centralizer body internal thread or external screw thread is arranged.
9. roller type centralizer according to claim 4 is characterized in that the left part of centralizer body has internal thread or external screw thread, at the right part of centralizer body internal thread or external screw thread is arranged.
10. roller type centralizer according to claim 6 is characterized in that the left part of centralizer body has internal thread or external screw thread, at the right part of centralizer body internal thread or external screw thread is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120526054 CN202348154U (en) | 2011-12-15 | 2011-12-15 | Rolling wheel type centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120526054 CN202348154U (en) | 2011-12-15 | 2011-12-15 | Rolling wheel type centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348154U true CN202348154U (en) | 2012-07-25 |
Family
ID=46537163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120526054 Expired - Fee Related CN202348154U (en) | 2011-12-15 | 2011-12-15 | Rolling wheel type centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348154U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852342A (en) * | 2015-04-27 | 2015-08-19 | 中国石油天然气股份有限公司 | Righting type downhole cable protector |
| CN109505523A (en) * | 2018-11-20 | 2019-03-22 | 江苏徐工工程机械研究院有限公司 | A kind of vehicle-mounted deep drilling rig and feed cylinder assemble auxiliary device |
-
2011
- 2011-12-15 CN CN 201120526054 patent/CN202348154U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852342A (en) * | 2015-04-27 | 2015-08-19 | 中国石油天然气股份有限公司 | Righting type downhole cable protector |
| CN109505523A (en) * | 2018-11-20 | 2019-03-22 | 江苏徐工工程机械研究院有限公司 | A kind of vehicle-mounted deep drilling rig and feed cylinder assemble auxiliary device |
| CN109505523B (en) * | 2018-11-20 | 2023-10-03 | 江苏徐工工程机械研究院有限公司 | Vehicle-mounted deep well drilling machine and feeding oil cylinder assembly auxiliary device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20161215 |