CN207609387U - A kind of drill string stabilizer - Google Patents
A kind of drill string stabilizer Download PDFInfo
- Publication number
- CN207609387U CN207609387U CN201721657631.6U CN201721657631U CN207609387U CN 207609387 U CN207609387 U CN 207609387U CN 201721657631 U CN201721657631 U CN 201721657631U CN 207609387 U CN207609387 U CN 207609387U
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- CN
- China
- Prior art keywords
- ball
- cover board
- righting
- drill string
- rib body
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Abstract
The utility model discloses a kind of drill string stabilizers, including main body, righting band rib body and ball, and righting is arranged with rib body on the outer wall of main body, further includes cover board；Righting is with the ball grooves for offering installation ball on rib body；Cover board is mounted on righting band rib body, and offers the ball through-hole for preventing ball from falling thereon.Drill string stabilizer provided by the utility model, righting are arranged with rib body on the outer wall of main body, and ball is mounted on righting in the ball grooves opened up on rib body so that ball can be freely rotated.Since cover board is mounted on righting band rib body, and the ball through-hole for preventing ball from falling is offered on cover board so that ball can only expose a part, which contacts with the borehole wall, form rolling friction, and cover board limits ball and falls.Drill string stabilizer i.e. provided by the utility model improves the service life of stabilizer on the basis of reducing the frictional force of stabilizer and the borehole wall.
Description
Technical field
The utility model is related to be applied to oil and gas drilling equipment technical field more particularly to a kind of drill string with surely
Determine device.
Background technology
Currently, the stabilizer in bottom drilling assembly generally only serves the effect of righting drill string.Between stabilizer and the borehole wall
Belong to sliding friction, frictional resistance is big, the easy backing pressure in high angle hole, extended reach well and horizontal well slipping drilling.
In order to reduce the frictional force between stabilizer and the borehole wall, there is ball-type stabilizer, wherein ball-type stabilizer
Righting band rib body surface face mounting spherical ball.However ball is easily fallen ball-type stabilizer after prolonged use, uses the longevity
It orders low.
Therefore, how on the basis of reducing the frictional force of stabilizer and the borehole wall, the service life for improving stabilizer is this
Field technology personnel technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of drill string stabilizer, in the base for the frictional force for reducing stabilizer and the borehole wall
On plinth, the service life of stabilizer is improved.
To achieve the goals above, the utility model provides following scheme：
A kind of drill string stabilizer, including main body, righting band rib body and ball, the righting band rib body are arranged in the master
Further include cover board on the outer wall of body；
The ball grooves of the ball are installed in the righting with being offered on rib body；
The cover board is mounted on righting band rib body, and it is logical to offer the ball for preventing the ball from falling thereon
Hole.
Preferably, in above-mentioned drill string stabilizer, the righting band rib body and the cover board are spiral shape, and described
Righting is identical with the spiral angle of the cover board with rib body.
Preferably, in above-mentioned drill string stabilizer, number of rows of the righting with rib body and the cover board is multiple rows of, and institute
It states and forms helical flow path between cover board.
Preferably, in above-mentioned drill string stabilizer, the righting is distributed on rib body on the outer wall of the main body.
Preferably, further include hard alloy blocks in above-mentioned drill string stabilizer；
The hard alloy blocks are mounted on the both sides of the cover board.
Preferably, in above-mentioned drill string stabilizer, the ball is hard alloy ball.
Preferably, in above-mentioned drill string stabilizer, the number of the ball grooves and the ball is multiple.
Preferably, in above-mentioned drill string stabilizer, number of rows of the righting with rib body is 3 rows or 4 rows, the righting band
The helical angle of rib body is 33 ° -45 °；
The uniformly distributed 6-10 ball grooves on the righting band rib body are often arranged, the depth of the ball grooves is that the ball is straight
The 1/2-3/5 of diameter, a diameter of 25mm-30mm of the ball；
The thickness of the cover board is 9mm-12mm；
The 1/5-1/4 of the ball height can protrude the cover board.
Preferably, in above-mentioned drill string stabilizer, the cover board is welded on the righting band rib body.
Preferably, in above-mentioned drill string stabilizer, the both ends of the main body offer internal thread and external screw thread respectively.
It can be seen from the above technical scheme that drill string stabilizer provided by the utility model, righting band rib body is arranged
On the outer wall of main body, ball is mounted on righting in the ball grooves opened up on rib body so that ball can be freely rotated.Due to
Cover board is mounted on righting band rib body, and the ball through-hole for preventing ball from falling is offered on cover board so that ball can only expose
A part, the part are contacted with the borehole wall, form rolling friction, and cover board limits ball and falls.Brill i.e. provided by the utility model
Column stabilizer improves the service life of stabilizer on the basis of reducing the frictional force of stabilizer and the borehole wall.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of drill string stabilizer provided by the utility model；
Fig. 2 is the present invention looks up structural representation of drill string stabilizer provided by the utility model；
Fig. 3 is the structural schematic diagram that drill string provided by the utility model does not install cover board with stabilizer；
Fig. 4 is the covering plate structure schematic diagram that drill string provided by the utility model does not install cover board with stabilizer.
Wherein, in Fig. 1-Fig. 4：
Main body 1, righting band rib body 2, ball 3, cover board 4, ball grooves 5, helical flow path 6, hard alloy blocks 7, ball through-hole
401。
Specific implementation mode
In order to make those skilled in the art be better understood from the technical solution of the utility model, below in conjunction with the accompanying drawings and have
The utility model is described in further detail for body embodiment.
Embodiment one
- Fig. 4 is please referred to Fig.1, the utility model discloses a kind of drill string stabilizers, wherein drill string stabilizer packet
Include main body 1, righting band rib body 2, ball 3 and cover board 4.
Main body 1 be cylinder, inside have through hole.
Righting is arranged with rib body 2 on the outer wall of main body 1, can be multiple rows of, and multiple rows of righting band rib body 2 is distributed on main body
On 1 outer wall.
Righting is with the ball grooves 5 for offering installation ball 3 on rib body 2, wherein the number of ball grooves 5 is multiple, is distributed on
On righting band rib body 2.
Cover board 4 is mounted on righting band rib body 2, and offers ball through-hole 401 thereon, for preventing ball 3 from falling.
It should be noted that can also be that ball grooves 5 directly open up on the body 1, cover board 4 is mounted directly on the body 1,
Limitation ball 3 is fallen.
Drill string stabilizer provided by the utility model, righting are arranged with rib body 2 on the outer wall of main body 1, and ball 3 is installed
In righting in the ball grooves 5 opened up on rib body 2 so that ball 3 can be freely rotated.Since cover board 4 is mounted on righting band rib
The ball through-hole 401 for preventing ball 3 from falling is offered on body 2, and on cover board 4 so that ball 3 can only expose a part, the portion
Divide and contacted with the borehole wall, form rolling friction, cover board 4 limits ball 3 and falls.Drill string i.e. provided by the utility model is stablized
Device improves the service life of stabilizer on the basis of reducing the frictional force of stabilizer and the borehole wall.
Embodiment two
In the utility model provides another embodiment, the brill in drill string stabilizer and embodiment one in the present embodiment
The structure of column stabilizer is similar, is just repeated no more to something in common, only introduces difference.
In the present embodiment, it is spiral shape to specifically disclose righting band rib body 2 and cover board 4, and righting is with rib body 2 and lid
The spiral angle of plate 4 is identical.
Further, it is multiple rows of the utility model discloses number of rows of the righting with rib body 2 and cover board 4, is distributed on main body 1
On outer wall.And helical flow path 6 can be formed between adjacent cover board 4.When drilling fluid is by helical flow path 6, eddy flow is generated, it can be effective
Improve large rock-carrying ability.Accordingly, the number of ball grooves 5 and ball 3 is also multiple.
Further, further include hard alloy blocks 7, hard alloy blocks 7 the utility model discloses drill string stabilizer
Mounted on the both sides of cover board 4, increase the wearability of cover board 4.In the present embodiment, being embedded in 4 both sides of cover board with hard alloy blocks 7 is
Example.
In the present embodiment, specifically discloses cover board 4 and be welded on righting band rib body 2.Pass through welded cover plate 4 and righting band rib
Body 2 is fixed, and internal ball 3 is locked, solves the problems, such as that ball 3 is easy to fall off, improves the safety and reliability of drilling well.
For the ease of connection drill string or other downhole tools, the utility model discloses the both ends of main body 1 to offer respectively
Internal thread and external screw thread.Can also be as needed, corresponding connection type is set.
It is hard alloy ball the utility model discloses ball 3 to increase the wearability of ball 3.
In the present embodiment, it is 3 rows or 4 rows to specifically disclose number of rows of the righting with rib body 2, is evenly distributed in 33 ° of -45 ° of helixes
On the outer wall of main body 1, often arranging among righting band rib body 2 has 6-10 ball grooves 5, for placing ball 3.
A diameter of 25mm-30mm of ball 3, the depth of ball grooves 5 are the 1/2-3/5 of 3 diameter of ball, the arc of ball grooves 5
Degree matches with ball 3, for placing ball 3, and ensures that ball 3 in the completely circumferential distribution of the outer wall of main body 1, completely attaches to well
Wall.
The thickness of cover board 43 is 9mm-12mm, is provided with ball through-hole 401 among cover board 4, for fixing ball 3, ball 3 is high
The volume of the 1/4-1/5 of degree protrudes (being higher by) cover board 4, and is contacted with the borehole wall, and the sliding friction between drilling tool and the borehole wall is changed
For rolling friction, to reduce drilling torque, make a trip frictional resistance, and phenomena such as effectively avoiding the viscous card of drilling tool, backing pressure occurs.
Drill string provided by the utility model is had the following advantages that with stabilizer：
Advantageous effect possessed by the utility model is：
(1) it is provided with ball grooves 5 in main body 1, hard alloy ball 3 is installed in ball grooves 5, is fixed with cover board 4, in High angle
The sliding friction between drilling tool and the borehole wall can be changed into rolling friction in well, horizontal well oriented sliding drilling process, to
Phenomena such as reducing the axial friction between drill string and the borehole wall, effectively avoiding the viscous card of drilling tool, backing pressure occurs；
(2) ball 3 is placed in ball grooves 5, and exposing is matched with cover board 4, and cover board 4 is fixed by welding and main body 1, is used for
It prevents ball 3 from falling, while preventing from impurity from entering ball grooves 5 to influence the rotation of ball 3, and further increases what ball 3 was bled off
Safety coefficient, when drill string inclination clings to wellbore flash, ball 3 stretches the backup borehole wall in flash in ball grooves 5, generates one
It is directed toward the power on the low side of hole deviation, reaches the optimal centralizer effect of drill string under that force；
(3) cover board 4 is spirally distributed, and when drilling fluid passes through screw-shaped flow paths, is generated eddy flow, can be effectively improved and take rock energy
Power, while ball 3 can be rotated with 360 ° without dead angle in the wellbore so that ball 3 contacts more abundant, uniform force with the borehole wall, very
The rolling characteristic of itself is played well, more effectively plays the effect that antifriction drop is turned round；
(4) when annular space drilling fluid flows through 6 atwirl blade of helical flow path, blade agitation generates turbulent flow, flowing speed
Degree and direction acute variation, further enhance the turbulence intensity of liquid stream around tool, cutting bed particle are suspended again, under drive
The cutting bed of portion's deposition, is conducive to the turn forward of landwaste, enhances pit shaft cycle and wellbore cleaning capacity, reaches and effectively take rock
Purpose；
(5) 4 both sides tungsten carbide button block 7 of cover board increases wearability, meets required for the stronger stratum of abrasiveness
Elasticity.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use this practicality new
Type.Various modifications to these embodiments will be apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest range consistent with novel features.
Claims (10)
1. a kind of drill string stabilizer, including main body (1), righting band rib body (2) and ball (3), the righting band rib body (2) set
It sets on the outer wall of the main body (1), which is characterized in that further include cover board (4)；
The ball grooves (5) of the ball (3) are installed in the righting with being offered on rib body (2)；
The cover board (4) is mounted on righting band rib body (2), and offers the rolling for preventing the ball (3) from falling thereon
Pearl through-hole (401).
2. drill string stabilizer according to claim 1, which is characterized in that the righting band rib body (2) and the cover board
(4) it is spiral shape, and the righting is identical with the spiral angle of the cover board (4) with rib body (2).
3. drill string stabilizer according to claim 2, which is characterized in that the righting band rib body (2) and the cover board
(4) number of rows is multiple rows of, and helical flow path (6) is formed between the cover board (4).
4. drill string stabilizer according to claim 3, which is characterized in that the righting band rib body (2) is distributed on described
On the outer wall of main body (1).
5. drill string stabilizer according to claim 1, which is characterized in that further include hard alloy blocks (7)；
The hard alloy blocks (7) are mounted on the both sides of the cover board (4).
6. drill string stabilizer according to claim 1, which is characterized in that the ball (3) is hard alloy ball.
7. drill string stabilizer according to claim 1, which is characterized in that the ball grooves (5) and the ball (3)
Number is multiple.
8. drill string stabilizer according to claim 1, which is characterized in that number of rows of the righting with rib body (2) is 3 rows
Or 4 rows, helical angle of the righting with rib body (2) are 33 ° -45 °；
The uniformly distributed 6-10 ball grooves (5) on the righting band rib body (2) are often arranged, the depth of the ball grooves (5) is described
The 1/2-3/5 of ball (3) diameter, a diameter of 25mm-30mm of the ball (3)；
The thickness of the cover board (4) is 9mm-12mm；
The 1/5-1/4 of ball (3) height can protrude the cover board (4).
9. drill string stabilizer according to claim 1, which is characterized in that the cover board (4) is welded on the righting band
On rib body (2).
10. the drill string stabilizer according to any one of claim 1-9, which is characterized in that the two of the main body (1)
End offers internal thread and external screw thread respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721657631.6U CN207609387U (en) | 2017-12-01 | 2017-12-01 | A kind of drill string stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721657631.6U CN207609387U (en) | 2017-12-01 | 2017-12-01 | A kind of drill string stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207609387U true CN207609387U (en) | 2018-07-13 |
Family
ID=62797407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721657631.6U Active CN207609387U (en) | 2017-12-01 | 2017-12-01 | A kind of drill string stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207609387U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138910A (en) * | 2018-08-24 | 2019-01-04 | 中国石油天然气股份有限公司 | A kind of low pump note frictional resistance bridge plug and its application method for horizontal well |
| CN109236202A (en) * | 2018-10-30 | 2019-01-18 | 四川达灿石油设备有限公司 | A kind of universal resistance reducing drilling tool stabilizer |
-
2017
- 2017-12-01 CN CN201721657631.6U patent/CN207609387U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138910A (en) * | 2018-08-24 | 2019-01-04 | 中国石油天然气股份有限公司 | A kind of low pump note frictional resistance bridge plug and its application method for horizontal well |
| CN109236202A (en) * | 2018-10-30 | 2019-01-18 | 四川达灿石油设备有限公司 | A kind of universal resistance reducing drilling tool stabilizer |
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| GR01 | Patent grant |