CN207144855U - Monoblock type ball centralizer - Google Patents
Monoblock type ball centralizer Download PDFInfo
- Publication number
- CN207144855U CN207144855U CN201721063295.2U CN201721063295U CN207144855U CN 207144855 U CN207144855 U CN 207144855U CN 201721063295 U CN201721063295 U CN 201721063295U CN 207144855 U CN207144855 U CN 207144855U
- Authority
- CN
- China
- Prior art keywords
- ball
- diameter
- screw
- helicla flute
- monoblock type
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 description 3
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 238000001595 flow curve Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a kind of monoblock type ball centralizer, it is related to cementing unit field, ball centralizer sets the cylinder in inner hollow, diameter in the middle part of it is more than the diameter at both ends, some screw wings are provided with outer wall, the section of screw wing is fillet trapezoid, helicla flute is provided with every screw wing, the open top width of helicla flute is less than its bottom width, ball is provided with helicla flute, spiral trench bottom is provided with screwed hole, screwed hole connects with the inwall of ball centralizer, the screw being engaged is screwed with screwed hole, it is provided with helicla flute coaxial with screwed hole, and diameter is more than the opening of the diameter of ball.Solve the problems, such as that existing ball centralizer is unable to the multi-faceted effectively reduction resistance of multi-angle and service life is not long in adverse circumstances.
Description
Technical field
Oil well cementing device field is the utility model is related to, more particularly to a kind of monoblock type ball centralizer
Background technology
In oil well cementing construction, centralizer is a kind of important component, and it is used for the centralizer for improving sleeve pipe.In existing skill
The centralizer commonly used in art is divided into two kinds of elastic centralizer and rigid centralizer.Elastic centralizer and rigid centralizer and sleeve pipe or
The way of contact of the borehole wall is face contact and is sliding friction, during pipe string tripping in, because frictional force is larger, pipe string tripping in
Resistance causes greatly the tripping in of pipe string difficult.
In order to solve the problems, such as that sliding-frictional resistance is big, there is ball centralizer.Ball centralizer of the prior art,
Some of only to have ball axially disposed, such a ball centralizer can only reduce axial frictional resistance, but drilling process
In, the resistance of sleeve pipe may be from multiple directions, so need ball centralizer can effectively reduce sleeve pipe all angles and
The tripping in resistance in each orientation, and with the characteristics of can adapt to a variety of adverse circumstances, firm and durable, long service life.
Utility model content
For above mentioned problem of the prior art, the utility model provides a kind of monoblock type ball centralizer, solves
Existing ball centralizer is unable to that multi-angle is multi-faceted effectively to reduce resistance and service life is not long in adverse circumstances asks
Topic.
In order to reach foregoing invention purpose, the technical solution adopted in the utility model is as follows：
A kind of monoblock type ball centralizer is provided, ball centralizer sets the cylinder in inner hollow, straight in the middle part of it
Footpath is more than the diameter at both ends, and some screw wings are provided with outer wall.The section of screw wing is fillet trapezoid, is set on every screw wing
Helicla flute is equipped with, the open top width of helicla flute is less than its bottom width, ball is provided with helicla flute.Spiral trench bottom is set
Screwed hole is equipped with, screwed hole is connected with inwall, and the screw being engaged is screwed with screwed hole.It is provided with helicla flute and screwed hole
Coaxial and diameter is more than the opening of the diameter of ball.
Further, some screw wings are distributed around outside wall parallel.
Further, the quantity of screw wing is 4-6 bars.
Further, the spiral angle of helicla flute and the spiral angle of screw wing are identical.
Further, the depth of helicla flute is more than the half of ball diameter and less than the diameter of ball.
Further, screwed hole is arranged on the center position of helicla flute.
Further, the top surface diameter of screw is identical with the diameter of opening.
Further, the top surface of screw is less than the top surface of screw wing.
Further, the material of monoblock type ball centralizer is cast steel.
Further, ball is steel ball.
The beneficial effects of the utility model are：Ball centralizer is rigid monoblock type, and its intensity is more than any multi-part group
The ball centralizer of dress, in the complex environment of underground, fracture will not occur, ball such as comes off at the abnormal conditions.Its profile is circle
Cylindricality, the diameter at middle part are more than the diameter at both ends, reduce the contact area of centralizer and the borehole wall, so as to farthest reduce
Fashionable frictional resistance under sleeve pipe.
The section of screw wing is fillet trapezoid, advantageously reduces damage to upper sleeve during rotation setting of casing, together
Shi Zengqiang centralizer intensity, the area of passage of maximum is ensure that, is advantageous to returning out for mud.
The spiral-shaped flow curve for simulating drilling fluid when rotating setting of casing of screw wing, straight rib or slant edge with routine
Shape is compared, and cement mortar is enhanced about more than once by efficiency, substantially increases the efficiency of well cementing operation.And ball is in spiral shell
It in the helicla flute for revolving shape, can be rotated freely with 360 ° of ground, effectively reduce the tripping in resistance in setting of casing all angles and orientation.
The depth of helicla flute is more than the half of ball diameter and less than the diameter of ball, can prevent ball from dropping out, increase
Force of sliding friction is effectively converted to force of rolling friction by the security of equipment, and can maximum, under farthest reducing
Enter resistance.
Brief description of the drawings
Fig. 1 is the front view of monoblock type ball centralizer.
Fig. 2 is the top view of monoblock type ball centralizer.
Wherein, 1, screw wing；2nd, helicla flute；3rd, ball；4th, screwed hole；5th, screw；6th, opening.
Embodiment
Specific embodiment of the present utility model is described below, in order to which those skilled in the art understand
The utility model, it should be apparent that the utility model is not limited to the scope of embodiment, to the common skill of the art
For art personnel, if various change in the spirit and scope of the present utility model that appended claim limits and determines,
These changes are it will be apparent that all utilize the innovation and creation of the utility model design in the row of protection.
As shown in Figure 1 and Figure 2, the monoblock type ball centralizer is made up of cast steel, is shaped as cylinder, and the diameter at middle part omits
More than the diameter at both ends, reduce the contact area of centralizer and the borehole wall to greatest extent.Ball centralizer inner hollow, there is 4-
6 screw wings 1 are distributed around outside wall parallel, and the section of screw wing 1 is the trapezoidal of fillet for four angles, the helical angle of screw wing 1
Degree is by optimization, the flow curve of drilling fluid when simulating rotation setting of casing.
Helicla flute 2 is provided with every screw wing 1, the spiral angle of helicla flute 2 is identical with the spiral angle of screw wing 1,
It is provided with ball 3 in helicla flute 3, ball 3 is steel ball, and the quantity of ball 3 is fills up helicla flute 2 and ensure each energy of ball 3
Enough freely roll is advisable.The bottom centre position of helicla flute 2 is provided with screwed hole 4, and screwed hole 4 connects with centralizer inwall, screw thread
The screw 5 being engaged is screwed with hole 4.
Opening 6 of the and diameter coaxial with screwed hole 4 more than the diameter of ball 3, circulation are provided with helicla flute 2
The diameter in hole 6 is more than the diameter of ball 3, and ball 3 is sequentially placed into from opening 6, screw 5 is screwed on after ball 3 is filled, because spiral shell
The top surface diameter of nail 5 is identical with the diameter of opening 6, can prevent ball 3 from being dropped out from helicla flute 2.It is straight according to the top surface of screw 5
The specification of the size selection screw 5 in footpath, so that it is determined that the size of screwed hole 4, because the top surface diameter of screw 5 is more than screw certainly
5 major diameter of thread, so the setting of opening 6 also makes the processing of screwed hole 4 more convenient.
The bottom width of helicla flute 2 need to be more than the diameter of ball 3, and open top width need to be less than diameter, for example, 3/4 it is straight
Electrical path length, and the depth of helicla flute 3 is more than the half of the diameter of ball 3 and less than the diameter of ball 3, to ensure that ball 3 can be just
Force of sliding friction is often switched to the function of force of rolling friction, will not be dropped out easily again.
The top surface of screw 5 need to be less than the top surface of screw wing 2, prevent screw 5 from being contacted with the borehole wall, increasing friction force.
In summary：The utility model can effectively reduce the tripping in resistance in sleeve pipe all angles and each orientation, and
And with the characteristics of can adapt to a variety of adverse circumstances, firm and durable, long service life.
Claims (10)
1. a kind of monoblock type ball centralizer, it is characterised in that ball centralizer sets the cylinder in inner hollow, its middle part
Diameter be more than the diameter at both ends, be provided with some screw wings (1) on outer wall；The section of the screw wing (1) is fillet trapezoid,
Helicla flute (2) is provided with every screw wing (1), the open top width of the helicla flute (2) is less than its bottom width,
Ball (3) is provided with the helicla flute (2)；Helicla flute (2) bottom is provided with screwed hole (4), the screwed hole (4) with
The inwall of ball centralizer is connected, and screw (5) is screwed with the screwed hole (4)；Be provided with the helicla flute (2) with it is described
Screwed hole (4) it is coaxial and diameter be more than the ball (3) diameter opening (6).
2. monoblock type ball centralizer according to claim 1, it is characterised in that some screw wings (1) are around outer wall
Parallel distribution.
3. monoblock type ball centralizer according to claim 1, it is characterised in that the quantity of the screw wing (1) is 4-6
Bar.
4. monoblock type ball centralizer according to claim 1, it is characterised in that the spiral angle of the helicla flute (2)
It is identical with the spiral angle of the screw wing (1).
5. monoblock type ball centralizer according to claim 1, it is characterised in that the depth of the helicla flute (2) is more than
The half of ball (3) diameter and the diameter for being less than the ball (3).
6. monoblock type ball centralizer according to claim 1, it is characterised in that the screwed hole (4) is arranged on described
The center position of helicla flute (2).
7. monoblock type ball centralizer according to claim 1, it is characterised in that the top surface diameter of the screw (5) with
The diameter of the opening (6) is identical.
8. monoblock type ball centralizer according to claim 1, it is characterised in that the top surface of the screw (5) is less than institute
State the top surface of screw wing (1).
9. monoblock type ball centralizer according to claim 1, it is characterised in that the material of the ball centralizer is casting
Steel.
10. monoblock type ball centralizer according to claim 1, it is characterised in that the ball (3) is steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721063295.2U CN207144855U (en) | 2017-08-23 | 2017-08-23 | Monoblock type ball centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721063295.2U CN207144855U (en) | 2017-08-23 | 2017-08-23 | Monoblock type ball centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207144855U true CN207144855U (en) | 2018-03-27 |
Family
ID=61669667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721063295.2U Expired - Fee Related CN207144855U (en) | 2017-08-23 | 2017-08-23 | Monoblock type ball centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207144855U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911091A (en) * | 2020-08-27 | 2020-11-10 | 盘锦恒奥瑞佳实业有限公司 | Integral solderless ball centralizer |
| CN113107390A (en) * | 2021-04-22 | 2021-07-13 | 中铁二院工程集团有限责任公司 | Drill rod centralizing ring and drilling device for horizontal drilling |
-
2017
- 2017-08-23 CN CN201721063295.2U patent/CN207144855U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911091A (en) * | 2020-08-27 | 2020-11-10 | 盘锦恒奥瑞佳实业有限公司 | Integral solderless ball centralizer |
| CN113107390A (en) * | 2021-04-22 | 2021-07-13 | 中铁二院工程集团有限责任公司 | Drill rod centralizing ring and drilling device for horizontal drilling |
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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: 20180327 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |