CN207660558U - A kind of reducing centralizer - Google Patents
A kind of reducing centralizer Download PDFInfo
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- CN207660558U CN207660558U CN201721641661.8U CN201721641661U CN207660558U CN 207660558 U CN207660558 U CN 207660558U CN 201721641661 U CN201721641661 U CN 201721641661U CN 207660558 U CN207660558 U CN 207660558U
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- linkage section
- borehole wall
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- wall contact
- radial
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Abstract
The utility model discloses a kind of reducing centralizers, including：Center tubes；Multiple righting strips, the lateral surface for the centrally disposed tube body being evenly distributed, righting strip includes upper linkage section, borehole wall contact-segment and lower linkage section, the upper end of upper linkage section and the lower end of lower linkage section are hinged with center tubes respectively, and the both ends of borehole wall contact-segment correspond respectively to be rotatablely connected with the lower end of upper linkage section and the upper end of lower linkage section；Multiple radial elastic roll-setting gears being correspondingly arranged with righting strip, are connected between borehole wall contact-segment and the lateral surface of central tube.In reducing centralizer provided by the utility model, by the way that radial elastic roll-setting gear is arranged, and by the kidney slot on upper and lower linkage section, to realize that outer diameter converts, to adapt to real well wall-like condition, to improve to the applicability of different operating modes and the stability of work.
Description
Technical field
The utility model is related to centralizer field more particularly to a kind of reducing centralizers.
Background technology
The use of casing stabbing board is the effective measures for improving cementing quality, casing stabbing board can effectively make casing centralization,
Effectively overcome the problems, such as that cement mortar alters slot, moreover it is possible to reduce the danger of casing pressure difference bit freezing.Existing casing stabbing board is usually
Rigid centralizer is generally used for no undergauge or there is no in the regular wellbore of pregnant well section.In undergauge or pregnant well
In the irregular borehole of section, since hole diameter diameter changes, no matter cannot all casing be made to reach requirement using rigid centralizers more again
Centralizer.
Utility model content
For the above problem existing for existing centralizer, a kind of reducing centralizer is now provided, it is intended to overcome existing help
Technical deficiency in positive device.
Specific technical solution is as follows：
A kind of reducing centralizer, has the feature that, including：
Center tubes；
Multiple righting strips, the lateral surface for the centrally disposed tube body being evenly distributed, righting strip include upper linkage section, the borehole wall
The lower end of contact-segment and lower linkage section, the upper end of upper linkage section and lower linkage section is hinged with center tubes respectively, and the borehole wall connects
The both ends for touching section correspond and the lower end of upper linkage section and the rotation connection of the upper end of lower linkage section respectively；
Multiple radial elastic roll-setting gears being correspondingly arranged with righting strip, are connected to the outside of borehole wall contact-segment and central tube
Between face.
Above-mentioned reducing centralizer, also has the feature that, radial elastic roll-setting gear includes at least one radial direction
The inner end of spring, radial spring is connected in center tubes, and outer end is connected with borehole wall contact-segment.
Above-mentioned reducing centralizer, also has the feature that, radial elastic roll-setting gear further includes having one and radial direction
The corresponding radial spring stabilizer of spring, radial spring stabilizer correspond to the outside for being set in radial spring, and inner end is connected to
In center tubes, and the length of radial spring stabilizer is less than the length of radial spring.
Above-mentioned reducing centralizer, also has the feature that, radial elastic roll-setting gear includes two radial springs,
And along the axially-spaced setting of center tubes between borehole wall contact-segment and center tubes.
Above-mentioned reducing centralizer also has the feature that, the lateral surface of borehole wall contact-segment is equipped at least two
Multi-directional ball, multi-directional ball are arranged along the length direction interval of borehole wall contact-segment.
Above-mentioned reducing centralizer, also has the feature that, kidney slot is equipped on upper linkage section and lower linkage section,
The both ends of borehole wall contact-segment are respectively rotationally connected with by slide bar in kidney slot.
The advantageous effect of said program is：
In reducing centralizer provided by the utility model, by the way that radial elastic roll-setting gear is arranged, and by connecting above and below
The kidney slot in section is connect, to realize that outer diameter converts, to adapt to real well wall-like condition, to improve the applicability to different operating modes
With the stability of work.Reducing centralizer provided by the utility model has the advantages that simple in structure, practical function.
Description of the drawings
Fig. 1 is the structural schematic diagram of the reducing centralizer provided in the embodiments of the present invention.
In attached drawing：1, center tubes；2, righting strip；21, upper linkage section；22, borehole wall contact-segment；23, lower linkage section；3, diameter
To spring；4, radial spring stabilizer；5, multi-directional ball；6, kidney slot；7, slide bar.
Specific implementation mode
The technical scheme in the embodiment of the utility model is carried out below in conjunction with the utility model embodiment clear, complete
Ground describes, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Base
In the embodiments of the present invention, what those of ordinary skill in the art were obtained under the premise of not making creative work
Every other embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
With reference to specific embodiment, the utility model is described in further detail, but is not intended to limit the present utility model.
Fig. 1 is the structural schematic diagram of the reducing centralizer provided in the embodiments of the present invention.As shown in Figure 1, this
The reducing centralizer provided in the embodiment of utility model, including：Center tubes 1；Multiple righting strips 2, are evenly distributed
The lateral surface of centrally disposed tube body 1, righting strip 2 include upper linkage section 21, borehole wall contact-segment 22 and lower linkage section 23, upper company
The lower end of the upper end and lower linkage section 23 that connect section 21 is hinged with center tubes 1 respectively, and upper linkage section 21 and lower linkage section 23
On be equipped with kidney slot 6, the both ends of borehole wall contact-segment 22 are respectively rotationally connected with by slide bar 7 in kidney slot 6, the borehole wall contact
The both ends of section 22 correspond respectively to be rotatablely connected with the lower end of upper linkage section 21 and the upper end of lower linkage section 23；Multiple and righting
The radial elastic roll-setting gear that item 2 is correspondingly arranged, is connected between borehole wall contact-segment 22 and the lateral surface of central tube.
By the way that radial elastic roll-setting gear is arranged in the present embodiment, and realize borehole wall contact-segment 22 upper by kidney slot 6
Sliding in linkage section 21 and lower linkage section 23, to adjust the radial distance of borehole wall contact-segment 22, to realize the outer of centralizer
Diameter converts, and adapts to real well wall-like condition, to improve to the applicability of different operating modes and the stability of work.
Three-stage righting strip designs in the present embodiment, compact-sized and practical for opposite four-part form articulated structure, and compared with
Few parts make the stability and reliability higher of centralizer provided in this embodiment.
Specifically, radial elastic roll-setting gear is equipped with a radial spring 3 and a radial spring stabilizer 4 in the present embodiment,
The inner end of radial spring 3 is connected in center tubes 1, and outer end is connected with borehole wall contact-segment 22,4 sets of radial spring stabilizer
It is located at the outside of radial spring 3, inner end is connected in center tubes 1, and the length of radial spring stabilizer 4 is less than radial bullet
The length of spring 3, by the way that radial spring 3 is arranged in the present embodiment, under the contact of radial spring 3, borehole wall contact-segment 22 can be with
The borehole wall is in close contact, preferably to carry out righting operation；Meanwhile passing through the length of optimization radial spring stabilizer 4 in the present embodiment
Degree, with ensure radial spring 3 in forced compression to shortest length also can contact borehole wall contact-segment 22, wanted with meeting normal use
It asks, in addition, setting radial spring stabilizer 4, also can avoid toppling over because of unbalance stress when radial spring 3 works, cause
It is disengaged with borehole wall contact-segment 22 and ineffective, there are two radial elastic roll-setting gear is set in the present embodiment, and along center
The axially-spaced setting of tube body 1 is between borehole wall contact-segment 22 and center tubes 1.
In addition, in reducing centralizer provided in this embodiment, the lateral surface of borehole wall contact-segment 22 is equipped at least two
Multi-directional ball 5, two multi-directional balls 5 are arranged along the length direction interval of borehole wall contact-segment 22, by the way that multi-directional ball 5 is arranged in the present embodiment,
To reduce frictional resistance along borehole axis direction, meanwhile, multi-directional ball 5 can also play auxiliary and subtract torsion effect.
It these are only the utility model preferred embodiment, be not intended to limit the embodiment and protection of the utility model
Range should can appreciate that all with made by the utility model description to those skilled in the art
Equivalent replacement and obviously change obtained scheme, should all include within the protection scope of the present utility model.
Claims (5)
1. a kind of reducing centralizer, which is characterized in that including：
Center tubes (1)；
Multiple settings being evenly distributed are in the righting strip (2) of the lateral surface of the center tubes (1), righting strip (2) packet
Include linkage section (21), borehole wall contact-segment (22) and lower linkage section (23), the upper end of the upper linkage section (21) and it is described under
The lower end of linkage section (23) is hinged with the center tubes (1) respectively, and the both ends difference of the borehole wall contact-segment (22) is one by one
It is corresponding to be rotatablely connected with the lower end of the upper linkage section (21) and the upper end of the lower linkage section (23)；
Multiple radial elastic roll-setting gears being correspondingly arranged with the righting strip (2), be connected to the borehole wall contact-segment (22) with
Between the lateral surface of the central tube, kidney slot (6), institute are equipped on the upper linkage section (21) and the lower linkage section (23)
The both ends for stating borehole wall contact-segment (22) are respectively rotationally connected with by slide bar (7) in the kidney slot (6).
2. reducing centralizer as described in claim 1, which is characterized in that the radial elastic roll-setting gear includes at least one
The inner end of a radial spring (3), the radial spring (3) is connected in the center tubes (1), and outer end connects with the borehole wall
Section (22) is touched to be connected.
3. reducing centralizer as claimed in claim 2, which is characterized in that the radial elastic roll-setting gear further includes and diameter
To the corresponding radial spring stabilizer (4) of spring (3), the radial spring stabilizer (4) is set in the corresponding radial spring
(3) outside, inner end are connected in the center tubes (1), and the length of the radial spring stabilizer (4) is less than described
The length of radial spring (3).
4. reducing centralizer as claimed in claim 2, which is characterized in that the radial elastic roll-setting gear includes two diameters
To spring (3), and along the axially-spaced setting of the center tubes (1) in the borehole wall contact-segment (22) and the center
Between tube body (1).
5. reducing centralizer as described in claim 1, which is characterized in that the lateral surface of the borehole wall contact-segment (22) is installed
There are at least two multi-directional balls (5), the multi-directional ball (5) to be arranged along the length direction interval of the borehole wall contact-segment (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721641661.8U CN207660558U (en) | 2017-11-30 | 2017-11-30 | A kind of reducing centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721641661.8U CN207660558U (en) | 2017-11-30 | 2017-11-30 | A kind of reducing centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207660558U true CN207660558U (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721641661.8U Active CN207660558U (en) | 2017-11-30 | 2017-11-30 | A kind of reducing centralizer |
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| Country | Link |
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| CN (1) | CN207660558U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654002A (en) * | 2019-02-27 | 2019-04-19 | 成都百胜野牛科技有限公司 | A kind of plunger and oil and gas well structure |
| CN110159207A (en) * | 2019-06-13 | 2019-08-23 | 中铁隧道集团一处有限公司 | A kind of drilling equipment for ultra-deep horizontal drilling of constructing |
| CN111441731A (en) * | 2020-04-17 | 2020-07-24 | 四川省科学城久利电子有限责任公司 | Multi-wheel centralizer |
| CN116398062A (en) * | 2023-06-08 | 2023-07-07 | 山西国源煤层气综合利用工程技术股份有限公司 | Hydraulic control variable diameter centralizer for underground reaming |
-
2017
- 2017-11-30 CN CN201721641661.8U patent/CN207660558U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654002A (en) * | 2019-02-27 | 2019-04-19 | 成都百胜野牛科技有限公司 | A kind of plunger and oil and gas well structure |
| CN110159207A (en) * | 2019-06-13 | 2019-08-23 | 中铁隧道集团一处有限公司 | A kind of drilling equipment for ultra-deep horizontal drilling of constructing |
| CN111441731A (en) * | 2020-04-17 | 2020-07-24 | 四川省科学城久利电子有限责任公司 | Multi-wheel centralizer |
| CN116398062A (en) * | 2023-06-08 | 2023-07-07 | 山西国源煤层气综合利用工程技术股份有限公司 | Hydraulic control variable diameter centralizer for underground reaming |
| CN116398062B (en) * | 2023-06-08 | 2023-08-11 | 山西国源煤层气综合利用工程技术股份有限公司 | Hydraulic control variable diameter centralizer for underground reaming |
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