CN205743752U - A kind of wear-resistant centralizer for screwdrill - Google Patents
A kind of wear-resistant centralizer for screwdrill Download PDFInfo
- Publication number
- CN205743752U CN205743752U CN201620436026.5U CN201620436026U CN205743752U CN 205743752 U CN205743752 U CN 205743752U CN 201620436026 U CN201620436026 U CN 201620436026U CN 205743752 U CN205743752 U CN 205743752U
- Authority
- CN
- China
- Prior art keywords
- centralizer
- screwdrill
- sheet
- wear
- synneusis
- 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
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 16
- 239000010432 diamond Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 6
- 210000003205 muscle Anatomy 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 8
- 230000035939 shock Effects 0.000 abstract description 4
- 238000005728 strengthening Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 9
- 239000011435 rock Substances 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003831 antifriction material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of wear-resistant centralizer for screwdrill, including centralizer body, multiple righting rib and flow path groove it is formed with on the outer wall of centralizer body, shape in a row and the diamond compact being parallel to each other and synneusis sheet it is fixedly installed on the surface of the righting rib of centralizer body outer wall, described diamond compact and synneusis sheet are arranged alternately successively, to strengthen the antiwear property of centralizer for screwdrill.Centralizer for screwdrill of the present utility model has that abrasion resistance properties is strong, shock resistance good, composite sheet, synneusis sheet and the advantage such as centralizer body is firmly combined with, thus the abrasion of centralizer for screwdrill can be reduced, improve using the time and strengthening the ability controlling well track of helicoid hydraulic motor.
Description
Technical field
This utility model relates to a kind of centralizer, particularly relates to the wear-resistant of a kind of applicable strong abrasive layer
Centralizer for screwdrill.
Background technology
Centralizer is for, during when drill string revolution at a high speed in hole, making drill axis as close possible to boring
A kind of utensil of centrage.Its main operational principle is the radial direction alleviating drill string elastic system in hole
With axial high vibration；Reduce drill bit and drilling rod eccentric wear；Ensure to core quality；Inclining prevention.Along with
Continuing to optimize of drilling technology, under the industry background improving bit speed and reduction drilling cost, needs
Increase helicoid hydraulic motor further to go into the well the use time.
During the compound drilling or directional drilling of helicoid hydraulic motor, its centralizer bears bigger all the time
Wall friction, when running into compactness rock stratum or high abrasive stratum, conventional screw centralising device for drilling tool uses
The mode of artificial tungsten carbide button post, in use owing to hard alloy columnar hardness is low, fragility big,
Wear no resistance, easily cause hard alloy columnar fragmentation, come off, the phenomenon such as abrasion.Hard on stratum, grind
Property strong, mud sand content is big, purifies in bad working environment, ultimately results in centralizer for screwdrill mill
Damage serious.
For existing centralizer, owing to the abrasion of centralizer causes build angle rate low, hinder well track control
System；Therefore need a kind of abrasion resistance properties being obviously enhanced centralizer of design badly, increase making of helicoid hydraulic motor
With the time, and effectively control the centralizer of well track.
Summary of the invention
For solving above-mentioned the problems of the prior art, this utility model provides a kind of wear-resistant helicoid hydraulic motor
Centralizer.
For achieving the above object, the concrete technology of a kind of wear-resistant centralizer for screwdrill of the present utility model
Scheme is as follows:
A kind of wear-resistant centralizer for screwdrill, including centralizer body, shape on the outer wall of centralizer body
Become to have multiple righting rib and flow path groove, the surface of the righting rib of centralizer body outer wall is fixedly installed into
Arranging shape and the diamond compact being parallel to each other and synneusis sheet, described diamond compact and synneusis sheet are successively
It is arranged alternately, to strengthen the antiwear property of centralizer for screwdrill.
Further, the diamond compact of shape in a row and synneusis sheet and centralizer body axially become angle；
The configuration of the righting rib formed on centralizer body outer wall includes vertical bar shaped or spiral type.
Further, the surface of righting rib is formed with equally distributed multiple blind hole, diamond compact and
Rows of synneusis sheet is fixedly installed in described blind hole.
Further, the inwall of described blind hole and the outer surface of diamond compact and synneusis sheet are provided with weldering
Connect material layer, diamond compact and synneusis sheet to be mounted in described blind hole by welding manner.
The wear-resistant centralizer for screwdrill of one of the present utility model has the advantage that
1) inlay high anti-friction material on the righting rib of centralizer, be suitable for the strong grinding of tight sand, conglomerate
Property stratum, reduce to greatest extent centralizer external diameter abrasion.
2) using PDC composite sheet and synneusis sheet bi-material, replace Hardmetal materials, composite sheet is resistance to
Wear level is higher, the shock resistance that synneusis sheet has had, bi-material mixing arrangement, improves wear-resisting
Damage and shock resistance.
3) PDC composite sheet and synneusis sheet are welded together with centralizer body by welding material, it is to avoid
Come off, more firmly.
Accompanying drawing explanation
Fig. 1 illustrates half-sectional view and the solder of a kind of wear-resistant centralizer for screwdrill of the present utility model.
Detailed description of the invention
In order to be best understood from the purpose of this utility model, structure and function, below in conjunction with the accompanying drawings, to this
The wear-resistant centralizer for screwdrill of utility model is described in further detail.
As it is shown in figure 1, wear-resistant centralizer for screwdrill of the present utility model includes centralizer body 1,
Righting rib 11 and flow path groove 12 it is formed with on the outer wall of centralizer body 1.Centralizer 11 connects with the borehole wall
Touch, primarily serve the effect of studdle drilling tool, beneficially helicoid hydraulic motor deflecting；The structure of righting rib 11
Type or form include the forms such as vertical bar, spiral, palm.The most in FIG, righting rib 11 and runner
Groove 12 all along the axially extending of centralizer body 1 and is arranged alternately the most successively.
PDC composite sheet 2 (gold it is fixedly installed on the surface of the righting rib 11 of centralizer body 1 outer wall
Hard rock composite sheet) and synneusis sheet 3, composite polycrystal-diamond (polycrystalline diamond
Compact, PDC) belong to new function material, it is to use diadust and cemented carbide substrate to exist
Under the conditions of high pressure high temperature, sintering forms, and has both had the high rigidity of diamond, high-wearing feature and heat conductivity,
There is again intensity and the toughness of hard alloy, be to manufacture cutting tool, drilling bit and other are resistance to
The ideal material of grinder tool.In the present embodiment, the making material of PDC composite sheet 2 can be glomerocryst gold
Hard rock, the making material of synneusis sheet 3 can be dimond synneusis.
The method that PDC composite sheet 2 and synneusis sheet 3 are fixed to righting rib 11 surface is a lot, specific to this
In embodiment, the surface of righting rib 11 is formed with equally distributed blind hole (such as blind round hole),
PDC composite sheet 2 and synneusis sheet 3 are fixed in the blind hole that righting rib 11 surface is formed, such as, utilize weldering
Connect material 4 to weld, be mounted in blind hole, or additive method of the prior art.When utilizing welding side
When PDC composite sheet 2 and synneusis sheet 3 are mounted in blind hole by method, can be at the inwall of blind hole and PDC
The outer surface of composite sheet 2 and synneusis sheet 3 arranges weld material layer, is filled in the blind hole of centralizer body 1
Interior welding material is consequently flowed together with the parcel wlding of PDC composite sheet 2 and synneusis sheet 3, thus real
Now fixing connection.
More specifically, the PDC composite sheet 2 being fixed on righting rib 11 surface and synneusis sheet 3 have with
Under arrangement feature, the most rows of PDC composite sheet 2 and rows of synneusis sheet 3 are parallel to each other and depend on
Secondary being arranged alternately, rows of PDC composite sheet 2 and rows of synneusis sheet 3 are the most all and centralizer body
1 axially become angle.Although illustrate only the righting rib 11 of vertical bar shaped in Fig. 1, above-mentioned PDC is multiple
The arrangement feature closing sheet 2 and synneusis sheet 3 is equally applicable to the righting rib 11 of other forms, such as spiral,
The forms such as palm.
Utilize PDC composite sheet 2 and rows of synneusis sheet 3 replacement hard-metal insert post, work as helicoid hydraulic motor
During compound drilling, centralizer and borehole wall relative motion, now the tempering property rock stratum aggravation centralizer mill of the borehole wall
Damaging, the PDC composite sheet 2 inlayed in equally distributed blind hole on righting rib and synneusis sheet 3 are greatly
Improve the wear-resistant grade of centralizer for screwdrill.
Thus, centralizer for screwdrill of the present utility model have that abrasion resistance properties is strong, shock resistance good,
The advantages such as composite sheet, synneusis sheet and centralizer body are firmly combined with, thus centralizer for screwdrill can be reduced
Abrasion, improve helicoid hydraulic motor use the time and strengthen control well track ability.
By specific embodiment, this utility model is further described above, it should be appreciated that
It is, the most concrete description, should not be construed as the restriction to spirit and scope of the present utility model, ability
The various amendments that above-described embodiment is made by those of ordinary skill in territory after reading this specification, all belong to
In the scope that this utility model is protected.
Claims (5)
1. a wear-resistant centralizer for screwdrill, including centralizer body (1), centralizer body (1)
Outer wall on be formed with multiple righting rib (11) and flow path groove (12), it is characterised in that centralizer this
It is fixedly installed shape in a row and the Buddha's warrior attendant being parallel to each other on the surface of the righting rib (11) of body (1) outer wall
Stone composite sheet (2) and synneusis sheet (3), the diamond compact (2) of described shape in a row and synneusis sheet
(3) it is arranged alternately successively, to strengthen the antiwear property of centralizer for screwdrill.
Wear-resistant centralizer for screwdrill the most according to claim 1, it is characterised in that in a row
The diamond compact (2) of shape and synneusis sheet (3) axially become angle with centralizer body (1).
Wear-resistant centralizer for screwdrill the most according to claim 1 and 2, it is characterised in that
The configuration of the righting rib (11) formed on centralizer body (1) outer wall includes vertical bar shaped or spiral type.
Wear-resistant centralizer for screwdrill the most according to claim 3, it is characterised in that righting
Equally distributed multiple blind hole it is formed with, diamond compact (2) and in a row on the surface of muscle (11)
Synneusis sheet (3) be fixedly installed in described blind hole.
Wear-resistant centralizer for screwdrill the most according to claim 4, it is characterised in that described
The outer surface of the inwall of blind hole and diamond compact (2) and synneusis sheet (3) is provided with welding material
Layer, to be mounted to diamond compact (2) and synneusis sheet (3) in described blind hole by welding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620436026.5U CN205743752U (en) | 2016-05-13 | 2016-05-13 | A kind of wear-resistant centralizer for screwdrill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620436026.5U CN205743752U (en) | 2016-05-13 | 2016-05-13 | A kind of wear-resistant centralizer for screwdrill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205743752U true CN205743752U (en) | 2016-11-30 |
Family
ID=57366739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620436026.5U Expired - Fee Related CN205743752U (en) | 2016-05-13 | 2016-05-13 | A kind of wear-resistant centralizer for screwdrill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205743752U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961592A (en) * | 2022-07-11 | 2022-08-30 | 中国地质大学（北京） | Drill rod with diamond particle composite wear-resistant belt |
-
2016
- 2016-05-13 CN CN201620436026.5U patent/CN205743752U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961592A (en) * | 2022-07-11 | 2022-08-30 | 中国地质大学（北京） | Drill rod with diamond particle composite wear-resistant belt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200928 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC BOHAI EQUIPMENT MANUFACTURING Co.,Ltd. Patentee after: Bohai Petroleum Equipment (Tianjin) Zhongcheng Machinery Manufacturing Co.,Ltd. Address before: 300457, Binhai New Area Development Zone, Tianjin, 19 Ring Road West, 3, Binhai Service Outsourcing Industrial Park Patentee before: CNPC BOHAI EQUIPMENT MANUFACTURING Co.,Ltd. Patentee before: Bohai Petroleum Equipment (Tianjin) Zhongcheng Machinery Manufacturing Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 |