CN113027372A - Novel wear-resisting high-efficient junk mill - Google Patents
Novel wear-resisting high-efficient junk mill Download PDFInfo
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- CN113027372A CN113027372A CN202011258864.5A CN202011258864A CN113027372A CN 113027372 A CN113027372 A CN 113027372A CN 202011258864 A CN202011258864 A CN 202011258864A CN 113027372 A CN113027372 A CN 113027372A
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- grinding
- hard alloy
- rib plate
- welded
- chip removal
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- 239000000956 alloy Substances 0.000 claims abstract description 44
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 44
- 239000012634 fragment Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 description 15
- 238000003466 welding Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention provides a novel wear-resistant efficient grinding shoe, which comprises a body arranged in the vertical direction, wherein a hollow connector is arranged at the upper end of the body and is connected with an external tool; a plurality of chip removal water grooves are arranged on the outer side of the body at intervals along the circumferential direction, the chip removal water grooves are matched with each other to divide the body into a plurality of grinding areas, and grinding fluid flowing channels matched with the grinding areas are arranged in the body; a large rib plate and a small rib plate are respectively arranged at one end of each grinding area far away from the connector, hard alloy blocks are respectively welded on the large rib plate and the small rib plate, and first hard alloy fragments are welded on the grinding areas at the peripheries of the large rib plate, the small rib plate and the hard alloy blocks; the first hard alloy fragments, the large rib plates, the small rib plates and the hard alloy fragments are matched with each other to form a grinding surface, and the grinding surface is of an inclined surface structure; the invention adopts the structure that the double ribbed plates are welded with the whole alloy, thereby improving the wear resistance of the mill shoe and prolonging the service life of the mill shoe.
Description
Technical Field
The invention relates to a grinding shoe, in particular to a novel wear-resistant efficient grinding shoe.
Background
In the construction of the underground well repairing operation, the underground fish is ground by using a grinding shoe, the grinding shoe used in the underground operation usually consists of a body and hard alloy welded on the body, a deep hole is arranged in the body, the lower part of the deep hole is communicated with a plurality of branch holes, a water tank is processed on the side surface of the body, and the upper part of the body is connected with other upper tools through threads. During operation, the grinding shoe rotates to grind the fish at the lower part, liquid reaches the branch hole through the deep hole and is sprayed out from the branch hole to wash the position between the hard alloy at the lower part of the grinding shoe and the fish, the hard alloy at the lower part of the grinding shoe is cooled at the same time to take away ground scraps, and the scraps and liquid flow are discharged out of a shaft through the side water groove and the annular channel.
In the whole grinding operation, the service life and the working efficiency of the grinding shoe are mainly determined by the grinding performance of the hard alloy and the chip removal condition of the water tank. At present, most of grinding shoes are unreasonably placed in the process of welding hard alloy, so that the alloy at the lower part of the grinding shoe is quickly abraded and the grinding performance is poor.
Disclosure of Invention
The invention aims to provide a novel wear-resistant efficient grinding shoe to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a novel wear-resistant efficient mill shoe comprises a body arranged in the vertical direction, wherein a hollow connector is arranged at the upper end of the body and is connected with an external tool; a plurality of chip removal water grooves are arranged on the outer side of the body at intervals along the circumferential direction, the chip removal water grooves are matched with each other to divide the body into a plurality of grinding areas, and grinding fluid flowing channels matched with the grinding areas are arranged in the body;
a large rib plate and a small rib plate are respectively arranged at one end of each grinding area far away from the connector, hard alloy blocks are respectively welded on the large rib plate and the small rib plate, and first hard alloy fragments are welded on the grinding areas at the peripheries of the large rib plate, the small rib plate and the hard alloy blocks; the first hard alloy fragments, the large rib plates, the small rib plates and the hard alloy fragments are matched with each other to form a grinding surface, and the grinding surface is of an inclined surface structure.
As a further scheme of the invention: the connector is in the shape of a hollow round table, and threads are arranged on the connector.
As a further scheme of the invention: the lower part of the chip removal water tank is of an arc-shaped structure, and the upper part of the chip removal water tank is of a trapezoid arc-shaped structure with a large upper part and a small lower part.
As a further scheme of the invention: one end of the grinding area, which is close to the connector, is of a conical surface structure, and second hard alloy fragments are welded on the conical surface structure.
As a further scheme of the invention: the grinding fluid flowing channel comprises a deep hole which is arranged in the body along the vertical direction and is communicated with the connector, the lower end of the deep hole is communicated and connected with branch holes which correspond to the grinding areas one by one, and the lower end face of each branch hole and the lower end face of the chip removal water tank are in the same plane.
As a further scheme of the invention: the included angle alpha between the grinding surface and the horizontal plane is 2-8 degrees.
Compared with the prior art, the invention has the beneficial effects that:
after the structure is adopted, the large rib plates, the small rib plates, the hard alloy blocks and the first hard alloy fragments are matched with each other, and the double rib plates are welded to form a whole alloy structure, so that the wear resistance of the grinding shoe is improved, and the service life of the grinding shoe is prolonged. Moreover, the grinding surface has reasonable inclination angle, so that the grinding process is smoother, the grinding is more labor-saving, the grinding efficiency is improved, and the service life is prolonged.
Simultaneously, chip removal basin initial section adopts the arc shape structure, can effectively prevent the piece jamming, and the end section adopts big-end-up's trapezoidal circular structure, and the sweeps just can be smooth to the junk upper portion of grinding shoe as long as can normally pass through the arc shape structure of initial section, effectively prevents the card bits phenomenon, makes the sweeps can not block in the basin, guarantees that the grinding in-process chip removal is unblocked and the grinding part can continuously cool off.
Drawings
Fig. 1 is a schematic structural diagram of a novel wear-resistant efficient grind shoe before welding.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Fig. 3 is a schematic view of fig. 2 taken along direction C.
Fig. 4 is a schematic view of fig. 1 from direction B.
Fig. 5 is a schematic structural diagram of a novel wear-resistant efficient grind shoe after welding.
FIG. 6 is a schematic structural diagram of the welding of hard alloy blocks in a novel wear-resistant efficient grind shoe.
Fig. 7 is a structural diagram of the welding of the first hard alloy fragment in the novel wear-resistant efficient grind shoe.
Fig. 8 is a sectional view taken along line D-D in fig. 7.
In the figure: 1. a body; 2. a connector; 3. a chip removal water tank; 4. a large rib plate; 5. a small rib plate; 6. a hard alloy block; 7. a first cemented carbide fragment; 8. second cemented carbide pieces; 9. deep holes; 10. a branch hole.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-8, a novel wear-resistant efficient grind shoe comprises a body 1 arranged in a vertical direction, wherein a hollow connector 2 is arranged at the upper end of the body 1, and the connector 2 is connected with an external tool; a plurality of chip removal water grooves 3 are arranged on the outer side of the body 1 at intervals along the circumferential direction, the chip removal water grooves 3 are matched with each other to divide the body 1 into a plurality of grinding areas, and grinding fluid flowing channels matched with the grinding areas are arranged in the body 1; a large rib plate 4 and a small rib plate 5 are respectively arranged at one end of each grinding area far away from the connector 2, hard alloy blocks 6 are respectively welded on the large rib plate 4 and the small rib plate 5, and first hard alloy fragments 7 are welded on the grinding areas at the peripheries of the large rib plate 4, the small rib plate 5 and the hard alloy blocks 6; the first hard alloy fragment 7, the large rib plate 4, the small rib plate 5 and the hard alloy block 6 are matched with each other to form a grinding surface, and the grinding surface is of an inclined surface structure. The large rib plates 4, the small rib plates 5, the hard alloy blocks 6 and the first hard alloy fragments 7 are matched with each other, and a structure that the whole alloy is welded by the double rib plates is adopted, so that the wear resistance of the grinding shoe is improved, and the service life of the grinding shoe is prolonged. And the grinding surface is obliquely arranged, so that the grinding process is smoother, the grinding is more labor-saving, the grinding is facilitated, the grinding efficiency is improved, and the service life is prolonged.
The connector 2 is in a hollow round table shape, and the connector 2 is provided with threads, so that the connector can be conveniently connected with an external tool.
Preferably, 3 lower parts of chip removal basin are ARC structure, and the trapezoidal ARC structure of big-end-up is on the upper portion of chip removal basin 3, and chip removal basin initial segment adopts the arc shape structure, can effectively prevent the piece jamming, and the end adopts the trapezoidal ARC structure of falling big-end-up, and the sweeps is as long as the arc shape structure that can normally pass through initial segment, just can be smooth arrange on the junk upper portion, effectively prevents the card bits phenomenon, makes the sweeps can not block in the basin, guarantees that grinding in-process chip removal is unblocked and the grinding part can continuously cool off.
Preferably, the one end that the grinding district is close to connector 2 is the conical surface structure, has welded second carbide fragment 8 in the structural welding of conical surface, and the surface is not processed after the welding, prevents that the instrument from upwards lifting in-process meets and hinders, can also grind after meeting and hinder, ensures that the instrument can be smoothly carried out from the pit.
Specifically, the grinding fluid flow channel comprises a deep hole 9 which is arranged in the body 1 along the vertical direction and is communicated with the connector 2, the lower end of the deep hole 9 is communicated and connected with branch holes 10 which are in one-to-one correspondence with the grinding areas, and the lower end face of each branch hole 10 and the lower end face of the chip removal water tank 3 are in the same plane. Liquid enters the branch hole 10 through the deep hole 9 in the grinding process, cools heat generated in the grinding process and takes away chips generated in the grinding process.
Preferably, the included angle alpha between the grinding surface and the horizontal plane is 2-8 degrees, the inclination angle is reasonable, the grinding process is smoother, and the grinding is more labor-saving.
The working principle of the invention is as follows: a plurality of chip removal water grooves 3 are machined in the side face of a body 1, each chip removal water groove 3 divides the body 1 into a plurality of grinding areas, and a large rib plate 4 and a small rib plate 5 are machined in each grinding area respectively. The large rib plate 4 is welded with the whole hard alloy block 6, the small rib plate 5 is welded with the whole hard alloy block 6, each grinding area is processed in a mode that the small rib plate 5 is 2-8 degrees lower than the large rib plate 4, a back angle of 2-8 degrees is directly formed after welding, then the first hard alloy fragments 7 are piled and welded in other areas, the grinding process is smoother by adopting the back angle of 2-8 degrees, and the grinding is more labor-saving.
When using, adopted two floor welding monoblock alloy, the effectual life that improves the junk mill to, at the grinding in-process, the grinding fluid enters into branch hole 10 through deep hole 9, cools off the heat that produces among the grinding process, takes away the piece that produces among the grinding process simultaneously, and liquid and piece are upwards arranged through the passageway of chip removal basin 3, through gradual change chip removal basin 3, effectively prevent the card bits phenomenon. When the grinding is finished and the grind shoe is lifted upwards, the second hard alloy fragment 8 is arranged, so that the grind shoe can be prevented from being blocked in the lifting process, and the second hard alloy fragment 8 can be used for grinding when being blocked, so that the grind shoe can be smoothly lifted out from the underground.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (6)
1. A novel wear-resistant efficient mill shoe comprises a body (1) arranged in the vertical direction, and is characterized in that a hollow connector (2) is arranged at the upper end of the body (1), and the connector (2) is connected with an external tool; a plurality of chip removal water grooves (3) are arranged on the outer side of the body (1) at intervals along the circumferential direction, the chip removal water grooves (3) are matched with each other to divide the body (1) into a plurality of grinding areas, and grinding fluid flowing channels matched with the grinding areas are arranged in the body (1);
a large rib plate (4) and a small rib plate (5) are respectively arranged at one end of each grinding area far away from the connector (2), hard alloy blocks (6) are respectively welded on the large rib plate (4) and the small rib plate (5), and first hard alloy fragments (7) are welded on the grinding areas at the peripheries of the large rib plate (4), the small rib plate (5) and the hard alloy blocks (6); the first hard alloy fragments (7), the large rib plates (4), the small rib plates (5) and the hard alloy blocks (6) are matched with one another to form a grinding surface, and the grinding surface is of an inclined surface structure.
2. The new wear-resistant efficient grind shoe according to claim 1, characterized in that the connecting head (2) is in the shape of a hollow circular truncated cone, and threads are provided on the connecting head (2).
3. A new wear-resistant efficient grind shoe according to claim 1, wherein the lower part of the debris removal groove (3) is arc-shaped, and the upper part of the debris removal groove (3) is trapezoid arc-shaped with big top and small bottom.
4. A new type of wear-resistant efficient grind shoe according to claim 1, wherein the end of the grinding area near the connecting head (2) is of a conical structure, and the second hard alloy fragments (8) are welded on the conical structure.
5. The novel wear-resistant efficient grind shoe according to claim 1, characterized in that the grinding fluid flow channel comprises a deep hole (9) which is vertically arranged in the body (1) and is communicated with the connecting head (2), the lower end of the deep hole (9) is communicated with branch holes (10) which correspond to the grinding areas, and the lower end surface of each branch hole (10) and the lower end surface of the chip removal water tank (3) are in the same plane.
6. The new wear resistant high efficiency grind shoe according to claim 1, wherein the angle α between the grinding surface and the horizontal plane is 2-8 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011258864.5A CN113027372A (en) | 2020-11-12 | 2020-11-12 | Novel wear-resisting high-efficient junk mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011258864.5A CN113027372A (en) | 2020-11-12 | 2020-11-12 | Novel wear-resisting high-efficient junk mill |
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| CN113027372A true CN113027372A (en) | 2021-06-25 |
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|---|---|---|---|
| CN202011258864.5A Pending CN113027372A (en) | 2020-11-12 | 2020-11-12 | Novel wear-resisting high-efficient junk mill |
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Citations (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2225537Y (en) * | 1995-06-02 | 1996-04-24 | 郎世魁 | Milling type under well milling shoe |
| CN2235014Y (en) * | 1994-11-22 | 1996-09-11 | 石油大学(华东) | Anti-oblique four-scraper bit |
| CN2246188Y (en) * | 1994-09-26 | 1997-01-29 | 石油大学(华东) | Blade-type directional well borer |
| CN2269460Y (en) * | 1996-07-30 | 1997-12-03 | 明柱平 | Guide cone mill shoe |
| CA2510136A1 (en) * | 2005-06-07 | 2006-12-07 | Gemstar Pdc Corp. | Drill bit |
| CN201288525Y (en) * | 2008-11-05 | 2009-08-12 | 泸州川油钻采工具有限公司 | Multi-teeth reversible mill shoe |
| CN201386523Y (en) * | 2009-04-14 | 2010-01-20 | 中国石化集团胜利石油管理局钻井工艺研究院 | Efficient drilling, grinding and milling integrated tool for well completion of horizontal well |
| CN202017456U (en) * | 2011-05-05 | 2011-10-26 | 四川川石金刚石钻头有限公司 | High-speed impregnated drill bit |
| CN202970487U (en) * | 2012-02-26 | 2013-06-05 | 袁淑英 | Long gauge bidirectional-drilling PDC drill bit |
| CN103256008A (en) * | 2013-05-21 | 2013-08-21 | 四川川石·克锐达金刚石钻头有限公司 | PDC drill bit with double shaft bottom covering |
| CN203420637U (en) * | 2013-09-13 | 2014-02-05 | 廊坊市鼎鑫联拓工贸有限公司 | PDC (polycrystalline diamond compact) drill bit |
| CN103603626A (en) * | 2013-06-06 | 2014-02-26 | 慕武 | Short-pipe fallen object inner fisher |
| CN203584311U (en) * | 2013-11-27 | 2014-05-07 | 戴方桂 | Limiting impact-resisting well drilling PDC (polycrystalline diamond compact) bit |
| CN203796206U (en) * | 2014-04-11 | 2014-08-27 | 杜越鹏 | Milling and grinding nipple adopting reverse circulation |
| CN204266966U (en) * | 2014-12-08 | 2015-04-15 | 牡丹江市林海石油打捞工具有限公司 | Wing junk mill |
| CN204371175U (en) * | 2014-12-26 | 2015-06-03 | 贵州高峰石油机械股份有限公司 | A kind of efficient impregnated type neck eye junk mill |
| 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 |
| CN204571895U (en) * | 2014-11-25 | 2015-08-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of 6 sword flat-bottom grind shoes |
| CN105113995A (en) * | 2015-08-10 | 2015-12-02 | 宝鸡石油机械有限责任公司 | Composite drill bit with core rock breaking capability improved |
| CN205089221U (en) * | 2015-11-04 | 2016-03-16 | 单学英 | Multilayer wing formula diamond bit |
| CN205503070U (en) * | 2016-04-20 | 2016-08-24 | 中国石油天然气股份有限公司 | Maintain first special high -efficient junk mill of fish |
| CN205503068U (en) * | 2016-01-26 | 2016-08-24 | 杰瑞能源服务有限公司 | Bore and grind well workover with five compound wing junk mills |
| CN205805471U (en) * | 2016-03-14 | 2016-12-14 | 杰瑞能源服务有限公司 | A kind of big passage bridging plug bores mill and uses efficient flat-bottom grind shoes |
| CN207138940U (en) * | 2017-09-14 | 2018-03-27 | 古运豪 | A kind of drill bit structure |
| CN207245659U (en) * | 2017-09-11 | 2018-04-17 | 合力（天津）石油钻采技术服务有限公司 | A kind of new bridge plug milling shoe |
| CN207420521U (en) * | 2017-10-16 | 2018-05-29 | 中国石油化工股份有限公司 | A kind of efficient milling shoes |
| CN108590558A (en) * | 2018-05-30 | 2018-09-28 | 四川安苏能源科技有限公司 | The compound junk mill of one kind of multiple cutting elements |
| CN108798571A (en) * | 2017-05-04 | 2018-11-13 | 北京博德世达石油技术股份有限公司 | Casing anchor |
| CN208252072U (en) * | 2018-01-02 | 2018-12-18 | 博德世达（天津）能源科技有限公司 | A kind of oil drilling wear resistant shoe |
| CN109113621A (en) * | 2018-11-01 | 2019-01-01 | 黄淮学院 | A kind of modularization junk mill and preparation method thereof |
| CN109594927A (en) * | 2018-12-21 | 2019-04-09 | 巴州大朴石油技术服务有限公司 | A kind of elastic drill bit for oil exploitation |
| CN209556975U (en) * | 2019-01-17 | 2019-10-29 | 中国石油化工股份有限公司 | The milling tool of fish in a kind of processing pit shaft |
| CN210483599U (en) * | 2019-05-31 | 2020-05-08 | 中国石油天然气股份有限公司 | High-efficient junk mill |
| CN210659946U (en) * | 2019-07-02 | 2020-06-02 | 深圳新速通石油工具有限公司 | PDC drill bit capable of rapidly drilling plastic stratum |
| CN211144407U (en) * | 2019-12-31 | 2020-07-31 | 王继国 | Eccentric wear prevention device for blowout preventer of oil field wellhead |
| CN213807613U (en) * | 2020-11-12 | 2021-07-27 | 北京博德世达石油技术股份有限公司 | Novel wear-resisting high-efficient junk mill |
-
2020
- 2020-11-12 CN CN202011258864.5A patent/CN113027372A/en active Pending
Patent Citations (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2246188Y (en) * | 1994-09-26 | 1997-01-29 | 石油大学(华东) | Blade-type directional well borer |
| CN2235014Y (en) * | 1994-11-22 | 1996-09-11 | 石油大学(华东) | Anti-oblique four-scraper bit |
| CN2225537Y (en) * | 1995-06-02 | 1996-04-24 | 郎世魁 | Milling type under well milling shoe |
| CN2269460Y (en) * | 1996-07-30 | 1997-12-03 | 明柱平 | Guide cone mill shoe |
| CA2510136A1 (en) * | 2005-06-07 | 2006-12-07 | Gemstar Pdc Corp. | Drill bit |
| CN201288525Y (en) * | 2008-11-05 | 2009-08-12 | 泸州川油钻采工具有限公司 | Multi-teeth reversible mill shoe |
| CN201386523Y (en) * | 2009-04-14 | 2010-01-20 | 中国石化集团胜利石油管理局钻井工艺研究院 | Efficient drilling, grinding and milling integrated tool for well completion of horizontal well |
| CN202017456U (en) * | 2011-05-05 | 2011-10-26 | 四川川石金刚石钻头有限公司 | High-speed impregnated drill bit |
| CN202970487U (en) * | 2012-02-26 | 2013-06-05 | 袁淑英 | Long gauge bidirectional-drilling PDC drill bit |
| CN103256008A (en) * | 2013-05-21 | 2013-08-21 | 四川川石·克锐达金刚石钻头有限公司 | PDC drill bit with double shaft bottom covering |
| CN103603626A (en) * | 2013-06-06 | 2014-02-26 | 慕武 | Short-pipe fallen object inner fisher |
| CN203420637U (en) * | 2013-09-13 | 2014-02-05 | 廊坊市鼎鑫联拓工贸有限公司 | PDC (polycrystalline diamond compact) drill bit |
| CN203584311U (en) * | 2013-11-27 | 2014-05-07 | 戴方桂 | Limiting impact-resisting well drilling PDC (polycrystalline diamond compact) bit |
| 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 |
| CN203796206U (en) * | 2014-04-11 | 2014-08-27 | 杜越鹏 | Milling and grinding nipple adopting reverse circulation |
| CN204571895U (en) * | 2014-11-25 | 2015-08-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of 6 sword flat-bottom grind shoes |
| CN204266966U (en) * | 2014-12-08 | 2015-04-15 | 牡丹江市林海石油打捞工具有限公司 | Wing junk mill |
| CN204371175U (en) * | 2014-12-26 | 2015-06-03 | 贵州高峰石油机械股份有限公司 | A kind of efficient impregnated type neck eye junk mill |
| CN105113995A (en) * | 2015-08-10 | 2015-12-02 | 宝鸡石油机械有限责任公司 | Composite drill bit with core rock breaking capability improved |
| CN205089221U (en) * | 2015-11-04 | 2016-03-16 | 单学英 | Multilayer wing formula diamond bit |
| CN205503068U (en) * | 2016-01-26 | 2016-08-24 | 杰瑞能源服务有限公司 | Bore and grind well workover with five compound wing junk mills |
| CN205805471U (en) * | 2016-03-14 | 2016-12-14 | 杰瑞能源服务有限公司 | A kind of big passage bridging plug bores mill and uses efficient flat-bottom grind shoes |
| CN205503070U (en) * | 2016-04-20 | 2016-08-24 | 中国石油天然气股份有限公司 | Maintain first special high -efficient junk mill of fish |
| CN108798571A (en) * | 2017-05-04 | 2018-11-13 | 北京博德世达石油技术股份有限公司 | Casing anchor |
| CN207245659U (en) * | 2017-09-11 | 2018-04-17 | 合力（天津）石油钻采技术服务有限公司 | A kind of new bridge plug milling shoe |
| CN207138940U (en) * | 2017-09-14 | 2018-03-27 | 古运豪 | A kind of drill bit structure |
| CN207420521U (en) * | 2017-10-16 | 2018-05-29 | 中国石油化工股份有限公司 | A kind of efficient milling shoes |
| CN208252072U (en) * | 2018-01-02 | 2018-12-18 | 博德世达（天津）能源科技有限公司 | A kind of oil drilling wear resistant shoe |
| CN108590558A (en) * | 2018-05-30 | 2018-09-28 | 四川安苏能源科技有限公司 | The compound junk mill of one kind of multiple cutting elements |
| CN109113621A (en) * | 2018-11-01 | 2019-01-01 | 黄淮学院 | A kind of modularization junk mill and preparation method thereof |
| CN109594927A (en) * | 2018-12-21 | 2019-04-09 | 巴州大朴石油技术服务有限公司 | A kind of elastic drill bit for oil exploitation |
| CN209556975U (en) * | 2019-01-17 | 2019-10-29 | 中国石油化工股份有限公司 | The milling tool of fish in a kind of processing pit shaft |
| CN210483599U (en) * | 2019-05-31 | 2020-05-08 | 中国石油天然气股份有限公司 | High-efficient junk mill |
| CN210659946U (en) * | 2019-07-02 | 2020-06-02 | 深圳新速通石油工具有限公司 | PDC drill bit capable of rapidly drilling plastic stratum |
| CN211144407U (en) * | 2019-12-31 | 2020-07-31 | 王继国 | Eccentric wear prevention device for blowout preventer of oil field wellhead |
| CN213807613U (en) * | 2020-11-12 | 2021-07-27 | 北京博德世达石油技术股份有限公司 | Novel wear-resisting high-efficient junk mill |
Non-Patent Citations (1)
| Title |
|---|
| 杨振国;: "天然气水平井新投磨铣工具的设计与应用", 中国石油和化工标准与质量, no. 04, 1 April 2011 (2011-04-01) * |
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