CN203022670U - Efficient flat-bottom grinding shoe with ball centralizers and blades - Google Patents
Efficient flat-bottom grinding shoe with ball centralizers and blades Download PDFInfo
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- CN203022670U CN203022670U CN 201220691344 CN201220691344U CN203022670U CN 203022670 U CN203022670 U CN 203022670U CN 201220691344 CN201220691344 CN 201220691344 CN 201220691344 U CN201220691344 U CN 201220691344U CN 203022670 U CN203022670 U CN 203022670U
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Abstract
The utility model discloses an efficient flat-bottom grinding shoe with ball centralizers and blades. The flat-bottom grinding shoe with the ball centralizer and the blades comprises a grinding shoe body (1), wherein the grinding shoe body (1) is a column, and a group of ball centralizers (2), a group of flow passage grooves (3) and a group of T-shaped grooves (4) are evenly distributed on the circumference of the external circle of the grinding shoe body; the group of flow passage grooves are communicated with a group of water holes (5) in the grinding shoe body; T-shaped cutting blades (6) are respectively arranged inside the T-shaped grooves; and a group of hard alloy columns (7) are evenly distributed on the bottom of the grinding shoe body (1). The flat-bottom grinding shoe with the ball centralizers and the blades can not deviate when grinding, and friction resistance between the flat-bottom grinding shoe with the ball centralizers and the blades and a wall of a sleeve is small. The T-shaped cutting blades are matched with the T-shaped grooves on the grinding shoe body so that the blades cannot drop. Angles alpha are formed on rear tool surfaces of the T-shaped cutting blades, and angles beta are formed on front tool surfaces of the T-shaped cutting blades. Scraps can be fast broken in the grinding process and can be fast washed away by slurry. Due to the fact that a group of grooves are formed in the T-shaped cutting blades, when a tooth drops from the blades, the whole blades cannotcrack.
Description
Technical field
The utility model relates to a kind of efficient flat-bottom grind shoes with ball erection device and blade, belongs to down-hole milling tool technical field.
Background technology
In the middle and later periods of oilfield exploitation, because oil well is more and more darker, the accident that drilling rod or other instrument fall into the down-hole often can appear in drilling process.This uses milling tool to carry out grinding to trouble of lost tool in hole with regard to needs, and then junk is pulled out from the down-hole.
The flat-bottom grind shoes of oil field use at present is when the grinding trouble of lost tool in hole, few, the effective length of cut of sword is short owing to going out, milling efficient is low, and junk mill center excessive wear can appear, form dell even junk mill heart section emptied, perhaps the hard alloy particle of the junk mill surface overlaying bald light of all being struck off, cause junk mill to lose efficacy in advance, junk mill surface attachment mud layer, the non-normal use phenomenon of formation mud drum.
Summary of the invention
The purpose of this utility model is, a kind of efficient flat-bottom grind shoes with ball erection device and blade is provided.Can improve milling speed, reduce flat-bottom grind shoes self wear extent, thereby overcome the deficiency that existing junk mill exists.
The technical solution of the utility model:
A kind of efficient flat-bottom grind shoes with ball erection device and blade comprises the junk mill body, and the junk mill body is cylinder, and the cylindrical of junk mill body is provided with the one group of band ball centralizer that is uniformly distributed along the circumference, one group of flow path groove and one group of T-slot; The intrinsic one group of hydrophthalmia hole of one group of flow path groove and junk mill is communicated with; Be respectively equipped with T shape cutting tip in T-slot; The bottom surface of junk mill body is evenly equipped with one group of hard alloy columnar.
In aforementioned efficient flat-bottom grind shoes, the bottom surface of described junk mill body is the plane, on the bottom surface surfacing one deck hard alloy particle.
In aforementioned efficient flat-bottom grind shoes, described T shape cutting tip is provided with one group of groove.
In aforementioned efficient flat-bottom grind shoes, described T shape cutting tip is provided with anterior angle β and relief angle α, and anterior angle β angle is 8 °, and relief angle α angle is 15 °.
In aforementioned efficient flat-bottom grind shoes, described one group of hard alloy columnar is pressed the spiral of Archimedes arrangement mode and is arranged.
In aforementioned efficient flat-bottom grind shoes, described hard alloy columnar is hexagonal prism.
In aforementioned efficient flat-bottom grind shoes, described band ball centralizer comprises wiper block, and wiper block is provided with spring in groove in adjustment screw is arranged on the groove of junk mill body; Wiper block is provided with ball recess, is provided with ball in ball recess, and wiper block is provided with pressing plate, and pressing plate is provided with the circular hole corresponding with ball, and pressing plate is connected with wiper block through bolt.
Compared with prior art, the utility model works together with ball centralizer and can not grind partially, and little with casing wall frictional resistance.Coordinate on T-slot on T shape cutting tip and body, blade can not drop in milling operation; After T shape cutting tip, knife face has formed a α angle and T shape cutting tip rake face and has formed a β angle, chip breaking rapidly in the milling process, and mud can wash away iron filings rapidly; On T shape cutting tip, several grooves are arranged, due to several grooves being arranged, when blade collapsed tooth, blade can wholely not rupture.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is T shape cutting tip front-and-back angle schematic diagram;
Fig. 3 is the structural representation of ball centralizer.
Being labeled as in figure: 1-junk mill body, 2-band ball centralizer, 3-flow path groove, 4-T shape groove, 5-hydrophthalmia hole, 6-T shape cutting tip, 7-hard alloy columnar, 8-hard alloy particle, 9-groove, 10-wiper block, 11-adjustment screw, 12-spring, 13-ball, 14-pressing plate.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing, but not as to any restriction of the present utility model.
A kind of efficient flat-bottom grind shoes with ball erection device and blade, as shown in Figure 1.Comprise junk mill body 1, junk mill body 1 is cylinder, and the cylindrical of junk mill body 1 is provided with the one group of band ball centralizer 2 that is uniformly distributed along the circumference, one group of flow path groove 3 and one group of T-slot 4; One group of hydrophthalmia hole 5 in one group of flow path groove 3 and junk mill body 1 is communicated with; Be respectively equipped with T shape cutting tip 6 in T-slot 4; The bottom surface of junk mill body 1 is evenly equipped with one group of hard alloy columnar 7.The bottom surface of junk mill body 1 is the plane, on the bottom surface surfacing one deck hard alloy particle 8.T shape cutting tip 5 is provided with one group of groove 9.T shape cutting tip 5 is provided with anterior angle β and relief angle α, and anterior angle β angle is 8 °, and relief angle α angle is 15 °.One group of hard alloy columnar 7 is pressed the spiral of Archimedes arrangement mode and is arranged.Hard alloy columnar 7 is hexagonal prism (Fig. 1 is schematic diagram, in order to draw conveniently, is not drawn as hexagonal prism).Band ball centralizer 2 comprises wiper block 10, and wiper block 10 is provided with spring 12 in groove in adjustment screw 11 is arranged on the groove of junk mill body 1; Wiper block 10 is provided with ball recess, is provided with ball 13 in ball recess, and wiper block 10 is provided with pressing plate 14, and pressing plate 14 is provided with the circular hole corresponding with ball 13, and pressing plate 14 is connected with wiper block 10 through bolt.
The course of work of the present utility model and principle
Be provided with the one group of band ball centralizer 2 that is uniformly distributed along the circumference due to junk mill body 1 cylindrical of the present utility model, thus in the process of going into the well, ball 13 inward collapsibles, the instrument external diameter diminishes, be convenient to by.Pressurization is during milling, and ball 13 is outwards opened by the elastic force of spring 12, and enlarged-diameter is close on internal surface of sleeve pipe, has not only revolved round the sun but also rotation, has guaranteed the centering of flat-bottom grind shoes, has improved milling efficient.
Again because 3 the hydrophthalmia holes 5 on flow path groove 3 and junk mill body 1 are connected, so the iron filings of milling can be taken away rapidly, the sole face of can not regrinding stops and forms mud cake.
Have 3 T-slots 4 on junk mill body 1,4 li of T-slots are equipped with T shape cutting tip 6, due to this special cooperation, blade can not drop easily in the milling process, though common junk mill has the still blade of blade not fix, do not grind how long blade just drops, do not play the effect that improves stock-removing efficiency.After T shape cutting tip, knife face has formed a α angle and T shape cutting tip rake face and has formed a β angle, and the angle at α angle is 15 °, and the angle at β angle is 8 °, has played the effect that fast quick-break is cut.
Due to several grooves 9 being arranged on T shape cutting tip 6, so when a blade has a place to collapse tooth, can not involve that on a blade, other place collapses tooth.
Also be inlaid with several hard alloy columnars 7 on the bottom surface of flat-bottom grind shoes, hard alloy columnar 7 is six prisms, grinding gets up quite to have more blade to participate in grinding, and arranging of a hard alloy columnar 7 be that spiral of Archimedes is arranged, and milling gets up to have covered whole milling face.
The utility model is made of jointly hard alloy particle milling sword, secondary T shape cutting tip cutting edge and three hard alloy columnar milling swords.One time the milling sword is equivalent to put down (recessed) face junk mill, and the secondary cutting sword is equivalent to scraper cutting, and three milling swords are equivalent to Archimedes's junk mill of arranging.Deepen when milling sharpening for the first time mills gradually, after the milling sharpening falls for the second time cutting edge begin cutting, begin milling followed by milling sword for the third time, for the second time cutting edge and for the third time two milling swords of milling sword begin synchronous milling, raising milling efficient.
Claims (7)
1. efficient flat-bottom grind shoes with ball erection device and blade, it is characterized in that: comprise junk mill body (1), junk mill body (1) is cylinder, and the cylindrical of junk mill body (1) is provided with one group of band ball centralizer (2), one group of flow path groove (3) and the one group of T-slot (4) that is uniformly distributed along the circumference; One group of hydrophthalmia hole (5) in one group of flow path groove (3) and junk mill body (1) is communicated with; Be respectively equipped with T shape cutting tip (6) in T-slot (4); The bottom surface of junk mill body (1) is evenly equipped with one group of hard alloy columnar (7).
2. efficient flat-bottom grind shoes according to claim 1, it is characterized in that: the bottom surface of described junk mill body (1) is the plane, on the bottom surface surfacing one deck hard alloy particle (8).
3. efficient flat-bottom grind shoes according to claim 1, it is characterized in that: described T shape cutting tip (6) is provided with one group of groove (9).
4. efficient flat-bottom grind shoes according to claim 1, it is characterized in that: described T shape cutting tip (6) is provided with anterior angle β and relief angle α, and anterior angle β angle is 8 °, and relief angle α angle is 15 °.
5. efficient flat-bottom grind shoes according to claim 1, it is characterized in that: described one group of hard alloy columnar (7) press spiral of Archimedes arrangement mode layout.
6. efficient flat-bottom grind shoes according to claim 1, it is characterized in that: described hard alloy columnar (7) is hexagonal prism.
7. efficient flat-bottom grind shoes according to claim 1, it is characterized in that: described band ball centralizer (2) comprises wiper block (10), wiper block (10) is arranged in the groove of junk mill body (1) through adjustment screw (11), is provided with spring (12) in groove; Wiper block (10) is provided with ball recess, is provided with ball (13) in ball recess, and wiper block (10) is provided with pressing plate (14), and pressing plate (14) is provided with the circular hole corresponding with ball (13), and pressing plate (14) is connected with wiper block (10) through bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691344 CN203022670U (en) | 2012-12-14 | 2012-12-14 | Efficient flat-bottom grinding shoe with ball centralizers and blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691344 CN203022670U (en) | 2012-12-14 | 2012-12-14 | Efficient flat-bottom grinding shoe with ball centralizers and blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203022670U true CN203022670U (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220691344 Expired - Lifetime CN203022670U (en) | 2012-12-14 | 2012-12-14 | Efficient flat-bottom grinding shoe with ball centralizers and blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203022670U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343674A (en) * | 2013-07-30 | 2013-10-09 | 南通奥里斯特机械有限公司 | Pear-shaped milling shoes for petroleum drilling |
| CN103775014A (en) * | 2012-12-14 | 2014-05-07 | 贵州高峰石油机械股份有限公司 | Grinding shoe used for grinding and milling under the shaft of oil field and manufacturing method thereof |
| CN104747111A (en) * | 2013-12-26 | 2015-07-01 | 贵州高峰石油机械股份有限公司 | Method for improving grinding efficiency of grind shoe and impregnated grind shoe |
| CN108316877A (en) * | 2017-12-29 | 2018-07-24 | 中石化石油工程技术服务有限公司 | Equal hole diameters expansion sleeve hydraulic variable diameter milling tool |
-
2012
- 2012-12-14 CN CN 201220691344 patent/CN203022670U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775014A (en) * | 2012-12-14 | 2014-05-07 | 贵州高峰石油机械股份有限公司 | Grinding shoe used for grinding and milling under the shaft of oil field and manufacturing method thereof |
| CN103775014B (en) * | 2012-12-14 | 2017-07-11 | 贵州高峰石油机械股份有限公司 | A kind of oil field well milling junk mill |
| CN103343674A (en) * | 2013-07-30 | 2013-10-09 | 南通奥里斯特机械有限公司 | Pear-shaped milling shoes for petroleum drilling |
| CN104747111A (en) * | 2013-12-26 | 2015-07-01 | 贵州高峰石油机械股份有限公司 | Method for improving grinding efficiency of grind shoe and impregnated grind shoe |
| CN108316877A (en) * | 2017-12-29 | 2018-07-24 | 中石化石油工程技术服务有限公司 | Equal hole diameters expansion sleeve hydraulic variable diameter milling tool |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |