CN201614906U - Support-type milling shoes - Google Patents
Support-type milling shoes Download PDFInfo
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- CN201614906U CN201614906U CN2010201423602U CN201020142360U CN201614906U CN 201614906 U CN201614906 U CN 201614906U CN 2010201423602 U CN2010201423602 U CN 2010201423602U CN 201020142360 U CN201020142360 U CN 201020142360U CN 201614906 U CN201614906 U CN 201614906U
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- milling
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- shoe body
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Abstract
The utility model relates to a milling material and a milling tool of an underground tool, in particular to a pair of support-type milling shoes. Each support-type milling shoe comprises a milling shoe body and a milling head at the end surface of the milling shoe body, wherein the milling shoe body and the milling head are welded into a whole. The support-type milling shoes are characterized in that each milling head is provided with five cutting edges which are uniformly distributed in a circumferential way around the axle center of the milling head, wherein two of the five cutting edges are main edges and the other three are auxiliary edges; the size of the two main edges is large while the size of the three auxiliary edges is small; the end surface of the milling head is provided with five water holes which are communicated with middle holes at the lower end of the milling shoe body; and the five water holes respectively form an included angle of 30 degrees with the axle center of the milling head. The support-type milling shoes can effectively solves the complex underground accidents and save the time for dealing with the accidents.
Description
Technical field
The utility model relates to a kind of milling material and milling tool of downhole tool, particularly support body formula milling footwear.
Background technology
The milling tool that domestic downhole tool enterprise can provide generally all is low speed, low life-span, and reliability is not high.Existing solve that long section milling cover mills, the instrument of long section milling in the sleeve pipe seldom.Efficient milling tool is abroad arranged, and effect is fine, but price is very high.
Therefore, we are by collecting data at home and abroad, with reference to external novel milling head structure and material, have designed and produced high-speed, long-life, low moment of torsion milling tool.
Summary of the invention
For solving the problems of the technologies described above, the support body formula milling footwear of a kind of high-speed, long-life of the utility model design, low moment of torsion, it can effectively solve complicated down-hole accident, saves the accident treatment time.
Technical solutions of the utility model are, a kind of support body formula milling footwear, comprise: the milling head of milling shoe body and milling shoe body end face, milling shoe body and milling head are welded as a whole, and it is characterized in that: 5 cutting edges are arranged on the milling head, 5 cutting edges are around the even circle distribution in milling head axle center, 5 cutting edges, wherein 2 is main sword, 3 is secondary sword, the size of main sword is big, and the size of 3 secondary swords is little; The milling head end face has 5 hydrophthalmias, and 5 hydrophthalmias communicate with the mesopore of milling shoe body lower end, and hydrophthalmia becomes 30 degree angles respectively with the axle center of milling head.
The upstream face of described 5 cutting edges is fixed with hard alloy blocks at a face respectively.
The top that hard alloy blocks on the described cutting edge plays the cutting function is an arc.
Described cutting edge angle at interval is 30 degree, and the cut surface of cutting edge is 6 ° of inclined-planes.
The beneficial effects of the utility model show:
1, the high-performance rigid alloy block that adopts owing to the utility model, hardness is up to 91.8HRA, and homemade milling tool hard alloy blocks hardness is generally between 89-91HRA.Therefore, the hard alloy blocks that the utility model adopted has better cutting ability and anti-wear performance.
2, the welding procedure of hard alloy blocks has adopted ratio-frequency welding in the utility model, this welding procedure is compared with traditional oxygen-acetylene built-up welding, have the oxidation of being difficult for, advantage such as the heat affected zone is little can reduce the damage that hard alloy blocks may occur in welding process.And since welding quality good, can reduce hard alloy blocks in the course of the work collapse in early days.
3, the optimization geometry designs taked of hard alloy blocks and milling head structure can be carried out milling to fish fully efficiently, and be had certain fish head finishing effect.
Description of drawings
Below in conjunction with accompanying drawing the utility model embodiment is described further.
Fig. 1 is the utility model embodiment front view;
Fig. 2 is the A-A direction sectional view of Fig. 1;
Fig. 3 is Fig. 1 vertical view.
Among the figure: 1, milling shoe body; 2, milling head; 3, hard alloy blocks; 4, upstream face; 5, hydrophthalmia; 6, mesopore; 7, cutting edge; 8, main sword; 9, secondary sword.
The specific embodiment
With reference to Fig. 1, Fig. 2 and shown in Figure 3, a kind of support body formula milling footwear comprise: the milling head 2 of milling shoe body 1 and milling shoe body 1 end face, milling shoe body 1 and milling head 2 are welded as a whole.7,5 cutting edges 7 of 5 cutting edges are arranged around the even circle distribution in milling head 2 axle center, 5 cutting edges 7 on the milling head 2,8,3 secondary swords 9 of 2 main swords wherein, the size of main sword 8 is big, the size of 3 secondary swords 9 is little, 5 cutting edges 7, and wherein 2 is main sword 8,3 is secondary sword 9, can contact with the fish head fully, 8 main shear actions of main sword, secondary sword 9 helps out, when main sword 8 lost efficacy, secondary sword 9 can be taken over and finish cutwork.Milling head end face design has 5,5 hydrophthalmias 5 of 5 hydrophthalmias to communicate with the mesopore 6 of milling shoe body 1 lower end, can satisfy to circulate under the high speed milling operating mode and the needs of chip removal.The axle center of hydrophthalmia 5 and milling head 2 is shape 30 degree angles respectively.
The upstream face 4 of 5 cutting edges 7 is fixed with hard alloy blocks 3 at a face respectively, and the top of 3 cuttings of the hard alloy blocks on the cutting edge 7 function is an arc, and cutting edge 7 angle at interval is 30 degree, and the cut surface of cutting edge 7 is 6 ° of inclined-planes.Hard alloy blocks 3 has good cutting ability through the geometry optimization design.Design at cutting edge 7,, can fully contact with fish when guaranteeing milling at rational site distribution hard alloy blocks 3 to milling head 2.In the milling process, can efficiently carry out milling to the down-hole fish fast.When fish is carried out milling, at first carry out the shaft bottom circulation, the bottom-hole cleaning is transferred milling shoe then, finds a fish position accurately, adds to suitable the pressure of the drill, carries out milling.
Claims (4)
1. support body formula milling footwear, comprise: the milling head (2) of milling shoe body (1) and milling shoe body (1) end face, milling shoe body (1) and milling head (2) are welded as a whole, it is characterized in that: 5 cutting edges (7) are arranged on the milling head (2), and 5 cutting edges (7) are around the even circle distribution in milling head (2) axle center, 5 cutting edges (7), wherein 2 is main sword (8), 3 is secondary sword (9), and the size of main sword (8) is big, and the size of 3 secondary swords (9) is little; Milling head (2) end face has 5 hydrophthalmias (5), and 5 hydrophthalmias (5) communicate with the mesopore (6) of milling shoe body (1) lower end, and hydrophthalmia (5) becomes 30 degree angles respectively with the axle center of milling head (2).
2. support body formula milling footwear according to claim 1 is characterized in that: the upstream face (4) of described 5 cutting edges (7) is fixed with hard alloy blocks (3) at a face respectively.
3. support body formula milling footwear according to claim 2 is characterized in that: the top that the hard alloy blocks (3) on the described cutting edge (7) plays the cutting function is an arc.
4. support body formula milling footwear according to claim 1 is characterized in that: described cutting edge (7) angle at interval is 30 degree, and the cut surface of cutting edge (7) is 6 ° of inclined-planes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201423602U CN201614906U (en) | 2010-03-26 | 2010-03-26 | Support-type milling shoes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201423602U CN201614906U (en) | 2010-03-26 | 2010-03-26 | Support-type milling shoes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201614906U true CN201614906U (en) | 2010-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201423602U Expired - Fee Related CN201614906U (en) | 2010-03-26 | 2010-03-26 | Support-type milling shoes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201614906U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162343A (en) * | 2011-04-14 | 2011-08-24 | 中国海洋石油总公司 | Milling shoes for casing window sidetracking |
| CN105257231A (en) * | 2015-10-22 | 2016-01-20 | 中国石油化工股份有限公司 | Extruding and drilling integral milling shoe |
| CN105378210A (en) * | 2013-09-30 | 2016-03-02 | 哈利伯顿能源服务公司 | Clad hardfacing application on downhole cutting tools |
| CN105422032A (en) * | 2015-12-24 | 2016-03-23 | 中国石油天然气股份有限公司 | Special high-efficient junk mill of latus rectum class bridging plug |
| CN108678697A (en) * | 2018-05-21 | 2018-10-19 | 中国石油天然气股份有限公司 | Efficient eccentric grinding shoe for trimming casing |
| RU188906U1 (en) * | 2018-08-31 | 2019-04-29 | Хэллибертон Энерджи Сервисиз, Инк. | WELL TOOL FOR MILLING WORKS |
| RU192032U1 (en) * | 2019-04-09 | 2019-09-02 | Хэллибертон Энерджи Сервисиз, Инк. | SURFACE COATING FOR SURFACE HARDENING ON DRILLING CUTTING TOOLS |
-
2010
- 2010-03-26 CN CN2010201423602U patent/CN201614906U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162343A (en) * | 2011-04-14 | 2011-08-24 | 中国海洋石油总公司 | Milling shoes for casing window sidetracking |
| CN102162343B (en) * | 2011-04-14 | 2014-02-12 | 中国海洋石油总公司 | Milling shoes for casing window sidetracking |
| CN105378210A (en) * | 2013-09-30 | 2016-03-02 | 哈利伯顿能源服务公司 | Clad hardfacing application on downhole cutting tools |
| CN105257231A (en) * | 2015-10-22 | 2016-01-20 | 中国石油化工股份有限公司 | Extruding and drilling integral milling shoe |
| CN105422032A (en) * | 2015-12-24 | 2016-03-23 | 中国石油天然气股份有限公司 | Special high-efficient junk mill of latus rectum class bridging plug |
| CN105422032B (en) * | 2015-12-24 | 2019-02-15 | 中国石油天然气股份有限公司 | Special high-efficient junk mill of latus rectum class bridging plug |
| CN108678697A (en) * | 2018-05-21 | 2018-10-19 | 中国石油天然气股份有限公司 | Efficient eccentric grinding shoe for trimming casing |
| RU188906U1 (en) * | 2018-08-31 | 2019-04-29 | Хэллибертон Энерджи Сервисиз, Инк. | WELL TOOL FOR MILLING WORKS |
| RU192032U1 (en) * | 2019-04-09 | 2019-09-02 | Хэллибертон Энерджи Сервисиз, Инк. | SURFACE COATING FOR SURFACE HARDENING ON DRILLING CUTTING TOOLS |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20180326 |
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| CF01 | Termination of patent right due to non-payment of annual fee |