CN218844258U - High-efficiency grind shoe - Google Patents
High-efficiency grind shoe Download PDFInfo
- Publication number
- CN218844258U CN218844258U CN202223523109.2U CN202223523109U CN218844258U CN 218844258 U CN218844258 U CN 218844258U CN 202223523109 U CN202223523109 U CN 202223523109U CN 218844258 U CN218844258 U CN 218844258U
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- cutting
- wear
- connecting pipe
- wall
- cutting teeth
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- 238000005520 cutting process Methods 0.000 claims abstract description 77
- 230000036346 tooth eruption Effects 0.000 claims abstract description 48
- 230000007704 transition Effects 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 8
- 238000003801 milling Methods 0.000 description 15
- 241000251468 Actinopterygii Species 0.000 description 13
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Earth Drilling (AREA)
Abstract
The utility model relates to an oil gas field downhole tool technical field is a high-efficient junk mill, to the connecting pipe that sets up around cutting tooth, wear-resisting piece, the circulation channel of intercommunication around connecting pipe front end central authorities are equipped with, be equipped with connecting thread on the inner wall of circulation channel rear portion, the anterior outside of connecting pipe is fixed with the cutting ring platform, and the cutting ring platform outside link up around having a plurality of and the outside cutting groove of opening along circumference interval equipartition, and the connecting pipe front end that corresponds every cutting groove position all is fixed with wear-resisting piece. The utility model has the advantages of reasonable and compact structure, convenient to use through setting up connecting thread, is convenient for connect with the drilling rod tubular column, through setting up circulation channel, during the drilling, mud can cool off the cutting teeth through drilling rod tubular column, circulation channel and chip groove, can also discharge the sweeps of cutting through the chip groove, prolongs the life of cutting teeth, reduces the fault rate of cutting teeth, has safety, laborsaving, simple and convenient, efficient characteristics.
Description
Technical Field
The utility model relates to an oil gas field instrument technical field in the pit is a high-efficient junk mill.
Background
In the field of petroleum engineering, with the prolonging of the production and development time of oil and gas fields, the phenomena of sand burying, deformation and the like of oil and gas well pipe columns caused by sand production of a production zone, corrosion of oil sleeves, action of stratum force and the like are caused, the productivity is reduced, and the well repair is needed to recover the productivity. In the well repairing process, the sand-buried pipe column is directly milled, or the annulus is milled through a sleeve, the buried clamp is removed, and the pipe column is salvaged by using a fishing tool. For a well with a small borehole, the strength of a milling sleeve is not enough, milling cannot be conducted, and only a milling shoe is used for direct milling. In a common grinding shoe, hard alloy particles or diamond abrasive materials are embedded and welded on the end face of a pipe body to a certain thickness, the whole lower end face is a cutting face, and therefore the grinding and milling efficiency is low and the service life is short.
Disclosure of Invention
The utility model provides a high-efficient junk mill has overcome above-mentioned prior art not enough, and it can effectively solve current junk mill and have the problem of milling inefficiency, life weak point.
The technical scheme of the utility model is realized through following measure: the utility model provides a high-efficient junk mill, including the cutting teeth, wear-resisting piece and the connecting pipe of front and back to setting up, the circulation channel of intercommunication around connecting pipe front end central authorities are equipped with, be equipped with connecting thread on the inner wall of circulation channel rear portion, the connecting pipe front portion outside is fixed with the cutting ring platform, the cutting ring platform outside has link up and the outside cutting flutes of opening around a plurality of along circumference interval equipartition, the connecting pipe front end that corresponds every cutting flute position all is fixed with wear-resisting piece, every two adjacent wear-resisting pieces and connecting pipe front end all are formed with the chip groove, the first end of every chip groove all communicates with circulation channel, the second end of every chip groove all communicates with the cutting flute that corresponds the position, equal matrix distribution has a plurality of cutting teeth in every cutting flute.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the inner wall of the cutting groove can comprise a first groove wall and a second groove wall arranged in parallel to the diameter direction, the front ends of connecting pipes corresponding to the positions between each first groove wall and the second groove wall located in front of the first groove wall in the clockwise direction are respectively fixed with a fan-shaped wear-resistant block, the side of the wear-resistant block located in front in the clockwise direction is an installation wall, the side of the wear-resistant block located in rear in the clockwise direction is a transition wall, a first inclined plane and a second inclined plane are sequentially formed between the transition wall and the outer side arc surface of the wear-resistant block, the second inclined plane is parallel to the first groove wall, and the cutting teeth are fixed on the installation wall of the wear-resistant block.
The front end face of the wear-resistant block can be inclined from back to front from the second inclined face to the mounting wall, and a chamfer structure is arranged at the front end of the cutting annular table corresponding to the second inclined face.
The section of the cutting teeth can be octagonal, two adjacent cutting teeth parallel to the central axis of the connecting pipe are in contact with each other, a gap is arranged between two adjacent cutting teeth vertical to the central axis of the connecting pipe, and the arc surfaces on the outer sides of the cutting teeth far away from the circulating channel and the outer sides of the wear-resistant blocks are in arc transition.
The projection of the at least four cutting teeth is located within the projection of the circulation channel.
All the cutting teeth rotate along the central axis of the connecting pipe to form a first cutting area, the front sides of the mounting walls of all the wear-resistant blocks rotate along the central axis of the connecting pipe to form a second cutting area, the first cutting area and the second cutting area form a circular cutting surface, the diameter of the inner annular surface of the cutting surface is smaller than that of the circulating channel, and the diameter of the outer annular surface of the cutting surface is the same as that of the cutting annular table.
The utility model has the advantages of reasonable and compact structure, convenient to use through setting up connecting thread, is convenient for connect with the drilling rod tubular column, through setting up circulation channel, during the drilling, mud can cool off the cutting teeth through drilling rod tubular column, circulation channel and chip groove, can also discharge the sweeps of cutting through the chip groove, prolongs the life of cutting teeth, reduces the fault rate of cutting teeth, has safety, laborsaving, simple and convenient, efficient characteristics.
Drawings
Fig. 1 is a schematic structural view of the preferred embodiment of the present invention.
Fig. 2 isbase:Sub>A schematic drawing ofbase:Sub>A zoomed sectional structure atbase:Sub>A-base:Sub>A in fig. 1.
Fig. 3 is an enlarged schematic view of B in fig. 2.
The codes in the figures are respectively: the cutting machine comprises a connecting pipe 1, a cutting ring platform 2, a wear-resistant block 3, a chip groove 4, a circulating channel 5, cutting teeth 6, a first groove wall 7, a second groove wall 8, a mounting wall 9, a transition wall 10, a first inclined surface 11, a second inclined surface 12 and a chamfer structure 13.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in the attached drawings 1, 2 and 3, the efficient grinding shoe comprises cutting teeth 6, wear-resistant blocks 3 and connecting pipes 1 arranged in the front-back direction, a circulation channel 5 communicated with the front and the back is arranged in the center of the front end of each connecting pipe 1, connecting threads are arranged on the inner wall of the rear portion of the circulation channel 5, a cutting ring platform 2 is fixed on the outer side of the front portion of each connecting pipe 1, a plurality of cutting grooves which are communicated with the front and the back and have outward openings are uniformly distributed on the outer side of each cutting ring platform 2 along the circumference at intervals, the wear-resistant blocks 3 are fixed at the front ends of the connecting pipes 1 corresponding to the positions of the cutting grooves, chip discharge grooves 4 are formed at the front ends of every two adjacent wear-resistant blocks 3 and the connecting pipes 1, the first ends of the chip discharge grooves 4 are communicated with the circulation channel 5, the second ends of the chip discharge grooves 4 are communicated with the cutting grooves corresponding to the positions, and a plurality of cutting teeth 6 are distributed in a matrix mode in each cutting groove. According to requirements, the material of the cutting teeth 6 and the material of the wear-resistant block 3 are both hard alloy materials. The cutting ring 2 and the connecting pipe 1 are integrally provided. In the use, through setting up connecting thread, be convenient for connect with the drilling rod tubular column, through setting up circulation channel 5, when creeping into, mud can cool off cutting teeth 6 through drilling rod tubular column, circulation channel and chip groove 4, can also discharge the sweeps of cutting through chip groove 4, prolongs cutting teeth 6's life, reduces cutting teeth 6's fault rate, the utility model discloses rational in infrastructure and compact, convenient to use has safety, laborsaving, simple and convenient, efficient characteristics.
The high-efficiency milling shoe can be further optimized or/and improved according to actual needs:
as shown in fig. 1, 2, and 3, the inner wall of the cutting groove includes a first groove wall 7 and a second groove wall 8 arranged in parallel to the diameter direction, a fan-shaped wear-resistant block 3 is fixed at the front end of a connecting pipe 1 corresponding to each first groove wall 7 and the second groove wall 8 located in front of the first groove wall 7 in the clockwise direction, the side of the wear-resistant block 3 located in front in the clockwise direction is an installation wall 9, the side of the wear-resistant block 3 located in back in the clockwise direction is a transition wall 10, a first inclined surface 11 and a second inclined surface 12 are sequentially formed between the transition wall 10 and the outer arc surface of the wear-resistant block 3, the second inclined surface 12 is parallel to the first groove wall 7, and the cutting teeth 6 are fixed on the installation wall 9 of the wear-resistant block 3. According to requirements, the wear-resistant block 3 is formed by overlaying hard alloy particles and then polishing the hard alloy particles smoothly, and the second groove wall 8 is parallel to the diameter direction of the circular cutting ring platform 2. In the use, through setting up wear-resisting piece 3, the welded fastening of the cutting tooth 6 of being convenient for can cut the fish up end in the pit when cutting tooth 6 is rotatory.
As shown in fig. 1, 2 and 3, the front end surface of the wear-resistant block 3 is inclined from the second inclined surface 12 to the mounting wall 9 from back to front, and the front end of the cutting annular table 2 corresponding to the position of the second inclined surface 12 is provided with a chamfer structure. According to requirements, the thickness of the second inclined surface 12 can be 0, that is, the section of the wear-resistant block 3 is triangular, and a chamfer structure with the same angle as the inclination angle of the front end of the wear-resistant block 3 is arranged at the front end of the cutting annular table 2 corresponding to the position of the second inclined surface 12. By such an arrangement, the cutting teeth 6 can be reinforced and milling of fish can be assisted.
As shown in fig. 1, 2 and 3, the section of each cutting tooth 6 is octagonal, two adjacent cutting teeth 6 parallel to the central axis of the connecting pipe 1 are in mutual contact, a gap is arranged between two adjacent cutting teeth 6 perpendicular to the central axis of the connecting pipe 1, and the outer sides of the cutting teeth 6 far away from the circulating channel 5 and the outer side of the wear-resistant block 3 are in arc transition. According to the requirement, the cutting teeth 6 are made of existing well-known octagonal tooth hard alloy, the cutting teeth on each mounting wall 9 are distributed according to a 3*5 matrix, and two adjacent cutting teeth 6 parallel to the central axis of the connecting pipe 1 are fixedly connected, so that the strength of the joints of all the cutting teeth 6 on each mounting wall 9 can be improved, the failure rate is reduced, a gap is formed between every two adjacent cutting teeth 6 perpendicular to the central axis of the connecting pipe 1, and cutting waste can be smoothly discharged through the gap.
As shown in fig. 1, 2 and 3, the projection of at least four cutting teeth 6 is located within the projection of the circulation channel 5. In the use process, the arrangement can increase the cutting area of the cutting teeth 6 and improve the milling efficiency.
As shown in the attached figure 1, all the cutting teeth 6 rotate along the central axis of the connecting pipe 1 to form a first cutting area, the front sides of the mounting walls 9 of all the wear-resistant blocks 3 rotate along the central axis of the connecting pipe 1 to form a second cutting area, the first cutting area and the second cutting area form a circular ring-shaped cutting surface, the diameter of the inner ring surface of the cutting surface is smaller than that of the circulating channel 5, and the diameter of the outer ring surface of the cutting surface is the same as that of the cutting ring platform 2. In the process of cutting the fish by rotating the pipe column, the upper surfaces of the fish are milled by the cutting teeth 6 and the wear-resistant blocks 3 at the front sides of the mounting walls 9, and the upper surfaces of the fish pass through the cutting teeth 6 and the wear-resistant blocks 3 at the same point, so that milled iron chips are fine and uniform in particle size and can be well returned out of a wellhead.
Above technical feature constitutes the utility model discloses an embodiment, it has stronger adaptability and implements the effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
The utility model discloses best embodiment's use: the utility model discloses a high-efficient junk mill is milling the operation in-process at the mill, to hollow pipe class fish, the mill effect is obvious, mills efficiently, and the piece granule that produces after the mill is even, returns the rate height. Connecting the efficient grinding shoe to the lowest end of a drill pipe column, putting the efficient grinding shoe into a well, starting a pump to circulate workover fluid when the efficient grinding shoe reaches the top of a fish, flushing the fish head, starting a turntable to slowly contact the fish head, milling the fish head body into fine particles under the milling of each cutting tooth 6 of a tool, and simultaneously cleaning impurities such as stratum sand, crystals, iron rust and the like in the annular space by the efficient grinding shoe. And (3) casing milling the workover fluid flowing out of the pipe column, circulating the milled impurities to the ground and filtering to clean the annulus. Along with the milling of fish head shortens, the whole weight decline of pressing on the fish of tubular column, can transfer the tubular column, and high-efficient mill shoes instrument moves down, continues to mill the fish head, clear up the annular space, continuity of operation. When the milling operation is finished, the pipe column is lifted upwards, and the efficient mill shoe is lifted out of the well mouth. The efficient grind shoe is applied on site for many times, and an obvious effect is achieved.
Claims (8)
1. The utility model provides a high-efficient junk mill, its characterized in that includes the cutting teeth, wear-resisting piece and the connecting pipe that sets up to the front and back, connecting pipe front end central authorities are equipped with the circulation channel of intercommunication around, be equipped with connecting thread on the inner wall of circulation channel rear portion, the connecting pipe front portion outside is fixed with the cutting ring platform, the cutting ring platform outside has link up and the outside cutting flutes of opening around a plurality of along circumference interval equipartition, the connecting pipe front end that corresponds every cutting flute position all is fixed with wear-resisting piece, every two adjacent wear-resisting pieces and connecting pipe front end all are formed with the chip groove, the first end of every chip groove all communicates with circulation channel, the second end of every chip groove all communicates with the cutting flute that corresponds the position, the equal matrix distribution has a plurality of cutting teeth in every cutting flute.
2. The efficient abrasive shoe as claimed in claim 1, wherein the inner wall of the cutting groove comprises a first groove wall and a second groove wall arranged in parallel to the diameter direction, a fan-shaped wear-resistant block is fixed to the front end of the connecting pipe corresponding to the position between each first groove wall and the second groove wall located in front of the first groove wall in the clockwise direction, the side of the wear-resistant block located in front in the clockwise direction is a mounting wall, the side of the wear-resistant block located in rear in the clockwise direction is a transition wall, a first inclined surface and a second inclined surface are sequentially formed between the transition wall and the outer circular arc surface of the wear-resistant block, the second inclined surface is parallel to the first groove wall, and the cutting teeth are fixed to the mounting wall of the wear-resistant block.
3. The efficient grind shoe according to claim 2, wherein the front end surface of the wear-resistant block is inclined from the rear to the front from the second inclined surface to the mounting wall, and the front end of the cutting collar corresponding to the position of the second inclined surface is provided with a chamfer structure.
4. The efficient grind shoe according to claim 2 or 3, wherein the cutting teeth have an octagonal cross-section, two adjacent cutting teeth parallel to the central axis of the connecting pipe are in contact with each other, a gap is provided between two adjacent cutting teeth perpendicular to the central axis of the connecting pipe, and the outer sides of the cutting teeth far from the circulation channel and the outer side of the wear-resistant block are in arc transition.
5. A high efficiency mill shoe as claimed in claim 1, 2 or 3, characterized in that the projection of at least four cutting teeth is located within the projection of the circulation path.
6. A high efficiency grind shoe according to claim 4, characterized in that the projection of at least three cutting teeth is located within the projection of the circulation path.
7. The high-efficiency grinding shoe as claimed in claim 5, wherein all the cutting teeth are rotated along the central axis of the connecting pipe to form a first cutting area, the front sides of the mounting walls of all the wear-resistant blocks are rotated along the central axis of the connecting pipe to form a second cutting area, the first cutting area and the second cutting area form a circular cutting face, the diameter of the inner circular face of the cutting face is smaller than that of the circulation passage, and the diameter of the outer circular face of the cutting face is the same as that of the cutting circular land.
8. The high-efficiency grinding shoe as claimed in claim 6, wherein all the cutting teeth are rotated along the central axis of the connecting pipe to form a first cutting area, the front side of the mounting wall of all the wear-resistant blocks are rotated along the central axis of the connecting pipe to form a second cutting area, the first cutting area and the second cutting area form a circular cutting face, the diameter of the inner circular face of the cutting face is smaller than that of the circulation passage, and the diameter of the outer circular face of the cutting face is the same as that of the cutting circular land.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223523109.2U CN218844258U (en) | 2022-12-28 | 2022-12-28 | High-efficiency grind shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223523109.2U CN218844258U (en) | 2022-12-28 | 2022-12-28 | High-efficiency grind shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218844258U true CN218844258U (en) | 2023-04-11 |
Family
ID=87307763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223523109.2U Active CN218844258U (en) | 2022-12-28 | 2022-12-28 | High-efficiency grind shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218844258U (en) |
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2022
- 2022-12-28 CN CN202223523109.2U patent/CN218844258U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240511 Address after: 3rd Floor, Shuixuan Mingyuan, No. 7, South 1st Lane, Tazhi East Road, Korla City, Bayingolin Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region, 841000 Patentee after: XINJIANG SINOPETROLEUM ENGINEERING Co.,Ltd. Country or region after: China Patentee after: Xinjiang Xinneng Huayou Technology Service Co.,Ltd. Address before: 841600 the Xinjiang Uygur Autonomous Region Bayinguoleng, Hongqiao Luntai County, Mongolia autonomous region Petroleum Service Road Patentee before: XINJIANG SINOPETROLEUM ENGINEERING Co.,Ltd. Country or region before: China |