CN206830073U - A kind of ball centralizer - Google Patents
A kind of ball centralizer Download PDFInfo
- Publication number
- CN206830073U CN206830073U CN201720533946.3U CN201720533946U CN206830073U CN 206830073 U CN206830073 U CN 206830073U CN 201720533946 U CN201720533946 U CN 201720533946U CN 206830073 U CN206830073 U CN 206830073U
- Authority
- CN
- China
- Prior art keywords
- ball
- centralizer
- rail groove
- groove
- 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
Links
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- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of ball centralizer, including centralizer body, support bar, ball, rail groove, through hole is set inside the centralizer body stated, one end of described centralizer body sets external screw thread, the other end sets internal thread, four support bars are equidistantly fixedly installed on the outside of described centralizer body, the end set groove of described support bar, described ball is installed in groove, the rail groove of the annular rolled for ball is set on the outside of described support bar, described rail groove is coaxially disposed with centralizer body, described ball is in close contact in rail groove madial wall, generally, the utility model has the phenomenon of rubbing partially that can effectively mitigate in drilling operation course between centralizer and the borehole wall.
Description
Technical field
The utility model belongs to drilling machinery field, is related to a kind of centralizer, particularly a kind of ball centralizer.
Background technology
In drilling process, to control well track and inclining prevention, while in order to prevent drill string or logger from surveying
Well instrument and wall friction, shorten the service life of drilling rod or logger, centralizer is typically installed on drill string.Entering
During row bore operation, with the increase of drilling depth, centre-of gravity shift occurs in drilling rod, can cause the hole of centralizer and drilling
Occur serious phenomenon of rubbing partially between wall, and between traditional centralizer and the borehole wall of drilling be simple sliding friction, not only can be tight
Ghost image rings the service life of centralizer, but also has a strong impact on drilling quality.
The content of the invention
The purpose of this utility model is to provide a kind of ball centralizer, and the ball centralizer is simple in construction, manufacture installation
Simplicity, it is convenient to use, effectively mitigate the phenomenon of rubbing partially between centralizer and the borehole wall in drilling operation course, have high
Use value.
What the purpose of this utility model was realized in：A kind of ball centralizer, including centralizer body, support bar, rolling
Pearl, rail groove, the centralizer body inside stated set through hole, and one end of described centralizer body sets external screw thread, the other end
Internal thread is set, four support bars are equidistantly fixedly installed on the outside of described centralizer body, the end of described support bar is set
Groove is put, described ball is installed in groove, and the rail groove of the annular rolled for ball is set on the outside of described support bar.
Described rail groove is coaxially disposed with centralizer body.
Described ball is in close contact in rail groove madial wall.
Beneficial effect is caused by the utility model：The utility model is provided with ball in the outside of support, and will rolling
Pearl is arranged in the rail groove of annular, and rail groove contacts with the borehole wall, and such setting is avoided in ball rotary course directly
Friction between the borehole wall, resistance of the ball when rotating is reduced, avoid injury of the ball rotation to the borehole wall.
Brief description of the drawings
Fig. 1 is main structure diagram of the present utility model.
Fig. 2 is overlooking the structure diagram of the present utility model.
Fig. 3 is vertical section structure schematic diagram of the present utility model.
Fig. 4 is the main structure diagram of the non-attachment rail groove of the utility model.
Fig. 5 is the overlooking the structure diagram of the non-attachment rail groove of the utility model.
Fig. 6 is the present invention looks up structural representation of the non-attachment rail groove of the utility model.
Fig. 7 is the vertical section structure schematic diagram of rail groove of the present utility model.
In figure：1st, centralizer body 2, support bar 3, ball 4, rail groove 5, through hole 6, external screw thread 7, internal thread
8th, groove.
Embodiment
Below in conjunction with the accompanying drawings to embodiment further instruction of the present utility model.
Embodiment 1
As shown in accompanying drawing 1-7, a kind of ball centralizer, including centralizer body 1, support bar 2, ball 3, rail groove 4, state
The inside of centralizer body 1 through hole 5 is set, one end of described centralizer body 1 set external screw thread 6, the other end set in spiral shell
Line 7, equidistantly four support bars 2 of fixed setting, the end set of described support bar 2 are recessed in the described outside of centralizer body 1
Groove 8, described ball 3 are installed in groove 8, and the described outside of support bar 2 sets the rail groove of the annular rolled for ball 3
4。
Described rail groove 4 is coaxially disposed with centralizer body 1.
Described ball 3 is in close contact in the madial wall of rail groove 4.
The utility model is when in use：A kind of ball centralizer, including centralizer body, support bar, ball, rail groove,
Centralizer body is internally provided with the through hole passed through for mud, and one end of centralizer body is provided with internal thread, and one end is set
There is external screw thread；The outside of centralizer body sets four support bars, and the end set of each support bar has a groove, every
One ball is installed in individual groove；Outside around support bar sets a circle rail groove, and ball is located in rail groove, and rolls
Pearl can freely roll in the track in rail groove.
After centralizer body is linked on drilling rod, centralizer body can rotate under the drive of drilling rod, so as to drive
Rotation of the ball in rail groove, the rotation of ball can also drive the rotation of rail groove simultaneously, because the presence of ball makes rail
The rotating speed of road groove is less than the rotating speed of centralizer body, crosses this reduction of speed measure, reduce further centralizer in the course of the work
Frictional resistance between the borehole wall.
Generally, the utility model, which has, can effectively mitigate rubbing partially between centralizer and the borehole wall in drilling operation course
Phenomenon.
Claims (3)
1. a kind of ball centralizer, including centralizer body, support bar, ball, rail groove, the centralizer body inside stated is set
Through hole, one end of described centralizer body set external screw thread, the other end to set internal thread, it is characterised in that：Described righting
Device outer body equidistantly install by four support bars of fixed setting, the end set groove of described support bar, described ball
In in groove, the rail groove of the annular rolled for ball is set on the outside of described support bar.
A kind of 2. ball centralizer according to claim 1, it is characterised in that：Described rail groove and centralizer body are same
Axle is set.
A kind of 3. ball centralizer according to claim 1, it is characterised in that：Described ball is in close contact in rail groove
Madial wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720533946.3U CN206830073U (en) | 2017-05-15 | 2017-05-15 | A kind of ball centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720533946.3U CN206830073U (en) | 2017-05-15 | 2017-05-15 | A kind of ball centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206830073U true CN206830073U (en) | 2018-01-02 |
Family
ID=60770595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720533946.3U Expired - Fee Related CN206830073U (en) | 2017-05-15 | 2017-05-15 | A kind of ball centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206830073U (en) |
-
2017
- 2017-05-15 CN CN201720533946.3U patent/CN206830073U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180102 Termination date: 20200515 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |