CN115142805A - Composite milling shoe - Google Patents
Composite milling shoe Download PDFInfo
- Publication number
- CN115142805A CN115142805A CN202210646246.0A CN202210646246A CN115142805A CN 115142805 A CN115142805 A CN 115142805A CN 202210646246 A CN202210646246 A CN 202210646246A CN 115142805 A CN115142805 A CN 115142805A
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- Prior art keywords
- milling
- head
- shoe
- hole
- milling head
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- 238000003801 milling Methods 0.000 title claims abstract description 79
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 35
- 239000000956 alloy Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 57
- 238000002347 injection Methods 0.000 claims description 30
- 239000007924 injection Substances 0.000 claims description 30
- 238000007493 shaping process Methods 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000010865 sewage Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 10
- 241000251468 Actinopterygii Species 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009966 trimming Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 description 17
- 239000002002 slurry Substances 0.000 description 7
- 229910001279 Dy alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention relates to the technical field of underground well repairing equipment, and particularly discloses a composite mill shoe which comprises a mill shoe body, wherein a tail connecting column is formed at one end of the mill shoe body, a milling head is formed at the other end of the mill shoe body, a plurality of outer fixing grooves are formed in the outer wall of one end, away from the tail connecting column, of the milling head, outer alloy blades are inserted into the outer fixing grooves and are fixed through screws, an arc groove is formed in the inner part of one end, away from the tail connecting column, of the milling head, a plurality of fixing ridges are welded on the inner wall of the arc groove, and inner alloy blades are detachably connected and fixed on the side wall of each fixing ridge. The beneficial effects are that: the structure of the milling shoe is reasonably designed, so that the milling shoe can be used for trimming a well wall and the top of a fish and milling an object falling into the well, the milling shoe is multipurpose, and when drilling operation is performed, drilling conditions of multiple differences can be met by only carrying one milling shoe, and the milling shoe is more convenient to transport.
Description
Technical Field
The invention relates to the technical field of underground well repairing equipment, in particular to a composite mill shoe.
Background
The common falling accidents in well drilling mainly comprise cone falling, tooth breaking and steel ball falling of a cone bit; the inclinometer, the slip insert, the tong insert, the elevator pin and the like fall into the well, and if underground falling objects are not processed, the drilling cannot be continued. The method for treating the accidents of the underground falling objects is to salvage the underground falling objects by using a salvage tool, and under the condition that the underground falling objects are difficult to salvage, the underground grinding and milling are generally carried out by using a conventional flat-bottom grinding shoe, and ground metal scraps are carried to the ground through mud circulation.
The milling shoe mainly comprises a flat-bottom milling shoe, a concave-bottom milling shoe, a guide milling shoe and a conical milling shoe. Different milling shoes have different functions, and the flat-bottom milling shoe is a tool for grinding underground falling objects by using YD alloy or wear-resistant materials, such as milling bits, cones, drift diameter gauges, slips, flushing pipes, tool joints, deep well pump accessories, packers, water distributors, longer tools and the like; the concave surface grinding shoe is used for grinding small underground falling objects and other unstable falling objects, such as steel balls, bolts, nuts, shot pads, drill rods, cones and the like, and because the bottom surface of the grinding shoe is a concave surface, the grinding shoe covers fish in the process of grinding chips, so that the fish is forced to gather in a cutting range and is ground; the guide grinding shoe is used for grinding and milling a drilling tool falling into a well and used for downhole operation; the tapered mill shoe is mainly used for repairing deformed fish tops or performing other special underground operations.
Because every kind of junk mill all has solitary function, can not be general, lead to needing to be equipped with different junk mills when the construction, the junk mill of different grade type is selected according to particular case again to the well workover in-process, but the junk mill that the metal was made is comparatively heavy, carries a large amount of different types of junk mills to transport very inconveniently during the well drilling.
Disclosure of Invention
The present invention is to solve the above problems and to provide a composite grind shoe.
The technical scheme of the invention is realized as follows:
composite mill shoe, including the mill shoe body, mill shoe body one end shaping has the afterbody spliced pole, mill shoe body other end shaping has the milling head, the milling head is kept away from the shaping has a plurality of outer fixed slot on the one end outer wall of afterbody spliced pole, it has outer alloy blade and utilizes the fix with screw to peg graft in the outer fixed slot, the milling head is kept away from the one end inside shaping of afterbody spliced pole has the circular arc recess, and the welding has a plurality of fixed arris on the circular arc recess inner wall, be fixed with interior alloy blade through dismantling the connection on the fixed arris lateral wall, the milling head is kept away from the shaping has a plurality of to consolidate the projection on the one end terminal surface of afterbody spliced pole, the milling head is kept away from the one end of afterbody spliced pole adopt build-up welding method welding have with consolidate the projection and connect the wearing layer as an organic whole, this internal shaping of mill shoe has to run through the milling head afterbody spliced pole tip inhale dirty hole and water filling hole.
Furthermore, the diameter of the sewage suction hole is 1.5-2 times of that of the water injection hole, and a funnel groove is formed in one end, far away from the tail connecting column, of the sewage suction hole.
Furthermore, an upper groove is formed in the end face of the tail connecting column, and a first convex pipe communicated with the sewage suction hole and a second convex pipe communicated with the water injection hole are formed in the upper groove.
Furthermore, the outer fixing grooves are obliquely formed on the side wall of the milling head, all the outer fixing grooves are distributed in an annular array, and the orientation of the outer alloy blades fixed in the outer fixing grooves is the same as the rotating direction of the milling shoe body.
Further, the fixed edge is formed in the inner cavity of the milling head in a spiral shape, and the inner alloy blade and the fixed edge are fixed through bolts.
Furthermore, the height of the reinforcing convex column is half of that of the wear-resistant layer, connecting grooves are formed in two sides of the reinforcing convex column, and the wear-resistant layer is filled in the connecting grooves.
Further, annular channel is formed in the interior of the milling shoe body, the communicating holes communicated with the annular channel and the water injection hole are formed in the interior of the milling shoe body, a plurality of water outlet holes communicated with the annular channel are formed in the outer wall of the milling shoe body in an array mode, counter bores are formed in the outer end portions of the water outlet holes, and first plugging cap heads are installed in the counter bores through threads.
Furthermore, the water injection hole faces towards one end of the milling head, a third plugging cap head is installed on one end of the milling head through threads, and the sewage suction hole faces towards one end of the milling head, and a second plugging cap head is installed on one end of the milling head through threads.
Furthermore, an internal thread connecting hole is formed in the center of the arc groove in the milling head, and the dirt suction hole and the water injection hole are formed in the inner end part of the internal thread connecting hole.
Further, still include to be fixed through dismantling the connection additional member in the milling head, the additional member includes the main part piece, main part piece one end shaping have with the attach fitting of female connection hole cooperation installation, the main part piece other end adopts build-up welding method welding to have wear-resisting head, cross head flow channel has been seted up on the wear-resisting head terminal surface, main part piece central authorities shaping has to run through wear-resisting head connect the thick liquid hole of inhaling of joint tip, inhale the diameter in thick liquid hole and be not less than inhale the diameter in dirty hole, wear-resisting head's lower terminal surface is any one in plane, inner concave surface, the evagination conical surface.
By adopting the technical scheme, the invention has the beneficial effects that: the structure through rational design junk mill makes this junk mill both can be maintained the wall of a well, fish top, can grind and mill the article that falls into in the well again, and a thing is multi-purpose, when carrying out the drilling operation, only need carry a junk mill can deal with the drilling condition of multiple difference, and is more convenient during the transportation, and removable after a plurality of parts damage, need not whole abandon, reduces the loss.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a top view of the present invention;
FIG. 5 is a bottom view of the present invention;
FIG. 6 is a front cross-sectional view of the present invention;
FIG. 7 is a first bottom cross-sectional view of the present invention;
FIG. 8 is a third bottom sectional view of the present invention;
FIG. 9 is a cross-sectional view of an attachment of the present invention;
fig. 10 is a bottom view of the attachment of the present invention.
The reference numerals are explained below:
1. grinding the shoe body; 2. grinding the milling head; 3. a tail connecting column; 4. reinforcing the convex column; 5. a wear layer; 6. an outer fixing groove; 7. an outer alloy blade; 8. fixing edges; 9. an inner alloy blade; 10. a dirt suction hole; 11. a water injection hole; 12. an internal thread connecting hole; 13. a funnel groove; 14. an upper groove; 15. a first male pipe; 16. a second male pipe; 17. connecting grooves; 18. a communicating hole; 19. an annular channel; 20. an outlet water hole; 21. a counter bore; 22. a first plugging cap head; 23. a second plugging cap head; 24. a third plugging cap head; 25. an attachment member; 251. a main body member; 252. a wear-resistant head; 253. a head tank; 254. connecting a joint; 255. and (4) slurry sucking holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figures 1-10, the composite mill shoe comprises a mill shoe body 1, a tail connecting column 3 is formed at one end of the mill shoe body 1 and is used for being connected with a drill rod of a drilling machine, a milling head 2 is formed at the other end of the mill shoe body 1, a plurality of outer fixing grooves 6 are formed on the outer wall of one end, far away from the tail connecting column 3, of the milling head 2, outer alloy blades 7 are inserted into the outer fixing grooves 6 and are fixed by screws, the outer fixing grooves 6 are convenient to replace after being damaged and are obliquely formed on the side wall of the milling head 2, all the outer fixing grooves 6 are distributed in an annular array mode, the orientation of the outer alloy blades 7 fixed in the outer fixing grooves 6 is the same as the rotating direction of the mill shoe body 1, the outer alloy blades 7 are obliquely arranged, the included angle between the outer alloy blades and a well wall is smaller, the blades and the milling head 2 are used as stress buffering to avoid the blades from being broken when a well is repaired, an arc groove is formed inside one end, far away from the tail connecting column 3, of the milling head 2, the inner wall of the arc groove is welded with a plurality of fixed edges 8, the side walls of the fixed edges 8 are detachably connected and fixed with inner alloy blades 9 which are convenient to replace after being damaged, the fixed edges 8 are spirally formed in the inner cavity of the milling head 2, the inner alloy blades 9 and the fixed edges 8 are fixed through bolts, the fixed edges 8 which are spirally distributed can ensure that each part of the inner alloy blades 9 has time difference with the contact of the objects when the objects are milled or fish is trimmed, thereby reducing the internal stress and prolonging the service life, one end surface of the milling head 2 far away from the tail connecting column 3 is formed with a plurality of reinforcing convex columns 4, one end of the milling head 2 far away from the tail connecting column 3 is welded with a wear-resistant layer 5 which is connected with the reinforcing convex columns 4 into a whole by adopting a build-up welding method, the height of the reinforcing convex columns 4 is half of the height of the wear-resistant layer 5, and connecting grooves 17 are formed on two sides of the reinforcing convex columns 4, the wear-resistant layer 5 is filled in the connecting groove 17, the wear-resistant layer 5 is made of Dy alloy or other wear-resistant alloy particles, the service life is long, the wear-resistant layer 5 and the milling head 2 can be firmly fixed together by arranging the reinforcing convex column 4 and the connecting groove 17, the fixing strength is improved, a dirt suction hole 10 and a water injection hole 11 which penetrate through the end parts of the milling head 2 and the tail connecting column 3 are formed in the milling shoe body 1, the dirt suction hole 10 is used for connecting a dirt suction pump to pump out mud and milling chips during well repair, the water injection hole 10 is connected with a water pump to supply water for cooling and flushing the chips on the surface of the milling shoe, the dirt suction hole 10 is parallel to the water injection hole 11, the diameter of the dirt suction hole 10 is 1.5-2 times of the diameter of the water injection hole 11, the chips and the mud generated during milling can be rapidly pumped out, a funnel groove 13 is formed at one end, far away from the tail connecting column 3, of the dirt suction hole 10, the end face of the tail connecting column 3 is provided with an upper groove 14, a first convex pipe 15 communicated with the dirt suction hole 10 and a second convex pipe 16 communicated with a water injection hole 11 are formed in the upper groove 14, the dirt suction pipe and the water injection pipe are conveniently fixed with the grinding shoe together, an annular channel 19 is formed in the grinding shoe body 1, a communication hole 18 communicated with the annular channel 19 and the water injection hole 11 is formed in the grinding shoe body 1, a plurality of water outlet holes 20 communicated with the annular channel 19 are formed in the outer wall of the grinding shoe body 1 in an array mode, water in the water injection hole 11 can be divided into a plurality of water outlet holes 20 through the annular channel 19, the water is uniformly discharged to the surface of the grinding shoe, a counter bore 21 is formed in the outer end portion of the water outlet hole 20, a first plugging cap head 22 is installed in the counter bore 21 through threads, and the first plugging cap head 22 can be used for plugging the water outlet holes 20 when external water spraying is not used, the first plugging cap head 22 is hidden in the counter bore 21, one end of the water injection hole 11 facing the milling head 2 is provided with a third plugging cap head 24 through threads, the third plugging cap head 24 can be used for plugging the water injection hole 11 to prevent water from flowing out of the milling head 2, one end of the dirt suction hole 10 facing the milling head 2 is provided with a second plugging cap head 23 through threads, the second plugging cap head 23 can be used for plugging the dirt suction hole 10 to prevent impurities such as soil from entering the dirt suction hole 10 to plug the dirt suction hole 10 when dirt suction is not performed, an internal thread connecting hole 12 is formed in the center of an arc groove in the milling head 2, the dirt suction hole 10 and the water injection hole 11 are formed in the internal thread connecting hole 12, and an additional piece 25 fixed in the milling head 2 through detachable connection is further included, the additional part 25 comprises a main body part 251, a connecting joint 254 matched with the internal thread connecting hole 12 is formed at one end of the main body part 251, a wear-resistant head 252 is welded at the other end of the main body part 251 through a surfacing welding method, the wear-resistant head 252 is made of Dy alloy or other wear-resistant alloy particles, the service life is long, a cross-shaped flow pulp groove 253 is formed in the end face of the wear-resistant head 252 to facilitate slurry to flow to a slurry suction hole 255, a slurry suction hole 255 penetrating through the end portion of the wear-resistant head 252 and the connecting joint 254 is formed in the center of the main body part 251, the diameter of the slurry suction hole 255 is not smaller than that of a dirt suction hole 10, the slurry suction hole 255 is communicated with the dirt suction hole 10 to facilitate slurry to be discharged during milling, the lower end face of the wear-resistant head 252 is any one of a plane, an inner concave face and an outer convex conical face, and different bottom faces can mill falling objects in different types.
The working principle of the invention is as follows: when the device is used, the tail connecting column 3 and a drilling drill rod are fixed together, whether the outer alloy blade 7, the inner alloy blade 9 and the additional piece 25 are installed or not is selected according to needs, when a well wall needs to be repaired, the outer alloy blade 7 is fixed in the outer fixing groove 6, the second plugging cap head 23 is installed at the end part of the dirt sucking hole 10, the third plugging cap head 24 is installed at the end part of the water injection hole 11, namely, the rotary outer alloy blade 7 can be used for repairing the well wall, when the soil is hard and the outer alloy blade 7 needs to be cooled, the first plugging cap head 22 can be taken down, the end part of the water injection hole 11 is connected with a water supply pipe, water is shunted to a plurality of outer water outlet holes 20 through the annular channel 19 after entering from the water injection hole 11 and is discharged, and water discharged from the outer water outlet holes 20 flows to the surface of the outer alloy blade 7 to cool the outer alloy blade 7; when the fish needs to be repaired, the inner alloy blade 9 can be installed on the fixed edge 8, the outer alloy blade 7 is not installed, the first plugging cap head 22 is used for plugging the outer water outlet hole 20, the second plugging cap head 23 is used for plugging the dirt suction hole 10, the upper end of the water injection hole 11 is connected with a water supply pipe, the arc groove at the lower end of the milling head 2 is used for covering the upper end of the fish, the rotary inner alloy blade 9 is used for repairing the upper end of the fish, and the water discharged from the water injection hole 11 can cool the inner alloy blade 9; when the object falling into the well needs to be milled, if the object is small, the additional piece 25 can be fixed in the arc groove inside the lower end of the milling head 2, the object can be milled by using the wear-resistant layer 5 and the additional piece 25, if the object is large, the object can be milled by using the wear-resistant layer 5 and the inner alloy blade 9, the object can also be milled by using the wear-resistant layer 5 and the additional piece 25, fragments generated by milling are discharged from the dirt suction hole 10 along with mud, when the object is milled by using the wear-resistant layer 5 and the inner alloy blade 9, water is directly discharged from the lower end of the water injection hole 11, when the object is milled by using the wear-resistant layer 5 and the additional piece 25, the lower end of the water injection hole 11 is blocked by using the third blocking cap head 24, and the water is discharged from the water outlet hole 20 to cool and wash waste chips.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (10)
1. The composite grind shoe is characterized in that: including mill shoe body (1), mill shoe body (1) one end shaping has afterbody spliced pole (3), mill shoe body (1) other end shaping has milling head (2), milling head (2) are kept away from the shaping has a plurality of outer fixed slot (6) on the one end outer wall of afterbody spliced pole (3), it has outer alloy blade (7) and utilizes the fix with screw to peg graft in outer fixed slot (6), milling head (2) are kept away from the one end inside shaping of afterbody spliced pole (3) has the circular arc recess, and the welding has a plurality of fixed arris (8) on the circular arc recess inner wall, be fixed with interior alloy blade (9) through dismantling the connection on fixed arris (8) the lateral wall, milling head (2) are kept away from the shaping has a plurality of to consolidate projection (4) on the one end terminal surface of afterbody spliced pole (3), milling head (2) are kept away from the one end of afterbody spliced pole (3) adopt build-up welding method to weld have with consolidate projection (4) and connect wearing layer (5) as an organic whole, mill shoe body (1) interior shaping runs through water injection milling head (2) the nose hole (11) tail portion hole (11) and suction head (11).
2. The composite grind shoe of claim 1, wherein: the diameter of the sewage suction hole (10) is 1.5-2 times that of the water injection hole (11), and a funnel groove (13) is formed in one end, far away from the tail connecting column (3), of the sewage suction hole (10).
3. The composite mill shoe according to claim 2, characterized in that: an upper groove (14) is formed in the end face of the tail connecting column (3), and a first convex pipe (15) communicated with the sewage suction hole (10) and a second convex pipe (16) communicated with the water injection hole (11) are formed in the upper groove (14).
4. The composite mill shoe according to claim 3, characterized in that: the outer fixing grooves (6) are obliquely formed in the side wall of the milling head (2), all the outer fixing grooves (6) are distributed in an annular array, and the orientation of the outer alloy blade (7) fixed in the outer fixing grooves (6) is the same as the rotating direction of the milling shoe body (1).
5. The composite mill shoe according to claim 4, characterized in that: the fixed edge (8) is spirally formed in the inner cavity of the milling head (2), and the inner alloy blade (9) and the fixed edge (8) are fixed through bolts.
6. The composite grind shoe of claim 5, wherein: the height of reinforcing projection (4) does the half of wearing layer (5) height, the shaping of reinforcing projection (4) both sides has spread groove (17), wearing layer (5) are filled in spread groove (17).
7. The composite grind shoe of claim 6, wherein: annular channel (19) are formed in the interior of the milling shoe body (1), the milling shoe body (1) is formed in the interior of the milling shoe body and is communicated with the annular channel (19) and the communication holes (18) of the water injection holes (11), a plurality of water holes (20) communicated with the annular channel (19) are formed in the outer wall of the milling shoe body (1) in an array mode, counter bores (21) are formed in the outer end portions of the water holes (20) in an outward mode, and first blocking cap heads (22) are installed in the counter bores (21) through threads.
8. The composite grind shoe of claim 7, wherein: the water injection hole (11) moves towards the third plugging cap head (24) is installed through the screw thread in the one end of milling head (2), the dirt absorption hole (10) moves towards the second plugging cap head (23) is installed through the screw thread in the one end of milling head (2).
9. The composite grind shoe of claim 8, wherein: an internal thread connecting hole (12) is formed in the center of the arc groove in the milling head (2), and the dirt suction hole (10) and the water injection hole (11) are formed in the inner end part of the internal thread connecting hole (12).
10. The composite grind shoe of claim 9, wherein: still include through dismantling the connection to fix add-on piece (25) in milling head (2), add-on piece (25) include main part (251), main part (251) one end shaping have with adapter (254) that female connection hole (12) cooperation was installed, main part (251) other end adopts the build-up welding method to weld to have wear-resisting head (252), cross head flow groove (253) have been seted up on wear-resisting head (252) terminal surface, main part (251) central authorities shaping have and run through wear-resisting head (252), adapter (254) tip inhale thick liquid hole (255), inhale the diameter of thick liquid hole (255) and be not less than inhale the diameter of dirt hole (10), the lower terminal surface of wear-resisting head (252) is any one in plane, interior concave surface, the outer conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210646246.0A CN115142805A (en) | 2022-06-09 | 2022-06-09 | Composite milling shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210646246.0A CN115142805A (en) | 2022-06-09 | 2022-06-09 | Composite milling shoe |
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| Publication Number | Publication Date |
|---|---|
| CN115142805A true CN115142805A (en) | 2022-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210646246.0A Pending CN115142805A (en) | 2022-06-09 | 2022-06-09 | Composite milling shoe |
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| CN (1) | CN115142805A (en) |
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2022
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| CN201078208Y (en) * | 2007-10-29 | 2008-06-25 | 大庆油田有限责任公司 | Multifunctional fish top trimmer |
| CN201401142Y (en) * | 2008-12-12 | 2010-02-10 | 中国石油集团长城钻探工程有限公司 | Horizontal well high-efficiency composite mill shoe |
| CN205100919U (en) * | 2015-11-17 | 2016-03-23 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Empty concave formula dysmorphism top of fish trimmer |
| CN205477482U (en) * | 2015-11-17 | 2016-08-17 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Introduction formula dysmorphism top of fish trimmer |
| CN207554002U (en) * | 2017-11-03 | 2018-06-29 | 中石化石油工程技术服务有限公司 | A kind of junk mill |
| 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 |
| CN209457908U (en) * | 2019-01-27 | 2019-10-01 | 四川安苏能源科技有限公司 | A kind of compound junk mill of novel PDC |
| CN110984895A (en) * | 2019-11-27 | 2020-04-10 | 淮安市井神钻采机具有限公司 | High-efficiency composite milling tool |
| CN212803121U (en) * | 2020-07-24 | 2021-03-26 | 天津市锦柏诚石油工程技术服务有限公司 | Combined mill shoe for different well diameters |
| CN112031692A (en) * | 2020-09-14 | 2020-12-04 | 北京博德世达石油技术股份有限公司 | External positioning milling composite milling shoe, and oil drilling equipment and method adopting same |
| CN216665546U (en) * | 2021-12-31 | 2022-06-03 | 贵州高峰石油机械股份有限公司 | Novel grinding, milling, expanding and fishing tool |
| CN216691026U (en) * | 2022-01-24 | 2022-06-07 | 中国石油化工股份有限公司 | High-efficient cover grinds integration instrument |
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