CN113202415A - Mixed drill bit - Google Patents
Mixed drill bit Download PDFInfo
- Publication number
- CN113202415A CN113202415A CN202110598051.9A CN202110598051A CN113202415A CN 113202415 A CN113202415 A CN 113202415A CN 202110598051 A CN202110598051 A CN 202110598051A CN 113202415 A CN113202415 A CN 113202415A
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- Prior art keywords
- groove
- bit
- leg
- bit body
- welding
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- 238000003466 welding Methods 0.000 claims description 39
- 229910000679 solder Inorganic materials 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 abstract description 13
- 230000013011 mating Effects 0.000 description 11
- 238000005553 drilling Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010959 steel 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
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids
-
- 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
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/16—Roller bits characterised by tooth form or arrangement
Abstract
The invention relates to a hybrid drill bit, comprising: the drill bit body is provided with a baffle groove; the bit leg is fixed on the bit body and is provided with a stop block matched with the stop groove; a cone fixed to the bit leg; when the roller cone is subjected to thrust along the radial direction of the bit body, the inner wall of the blocking groove blocks the blocking block from moving along the radial direction of the bit body. According to the hybrid drill bit, when the cone is subjected to outward thrust along the radial direction of the drill bit body and simultaneously drives the bit leg to move outwards, the stop block and the blocking groove bear most of the thrust, so that the connection strength between the bit leg and the drill bit body is enhanced, the connection reliability between the bit leg and the drill bit body is ensured, and the accidents that the bit leg and the drill bit body crack and the bit leg falls into a well are avoided.
Description
Technical Field
The invention relates to the technical field of oil drilling tools, in particular to a hybrid drill bit.
Background
At present, a hybrid drill bit has the performance advantages of adaptability to various stratums, high mechanical drilling speed, multiple footage and the like due to a composite cutting structure of a fixed blade and a rolling cone; hybrid drill bits are used in large numbers in the field of oil drilling.
In the related art, a hybrid drill bit generally comprises a drill bit body, a rolling cone is mounted at the lower end of the drill bit body through a cone leg, an inner flow channel is required to be arranged at the core of the drill bit so that drilling fluid can pass through the inner flow channel, the rolling cone and the cone leg are generally arranged at the outer edge of the drill bit, the problems of insufficient connection strength and low connection reliability between the cone leg and the drill bit body generally occur, and in the case that a drilling company generally tends to adopt reinforced drilling for seeking drilling benefits, the connection strength between the cone leg and the diamond drill bit body is seriously insufficient, the connection reliability is low, and the cracking of the cone leg and the drill bit body and the falling accidents of the cone leg are easy to occur.
Therefore, there is a need for a new hybrid drill bit that overcomes the above problems.
Disclosure of Invention
The embodiment of the invention provides a hybrid drill bit, which aims to solve the problems that in the related technology, the connection strength between a bit leg and a drill bit body is insufficient, the connection reliability is low, the bit leg and the drill bit body are prone to cracking, and the bit leg falls into a well.
In a first aspect, a hybrid drill bit is provided, comprising: the drill bit body is provided with a baffle groove; the bit leg is fixed on the bit body and is provided with a stop block matched with the stop groove; a cone fixed to the bit leg; when the roller cone is subjected to thrust along the radial direction of the bit body, the inner wall of the blocking groove blocks the blocking block from moving along the radial direction of the bit body.
In some embodiments, the bit body is provided with a bit leg groove for placing the bit leg, the blocking groove is arranged on one side of the bit leg groove along the circumferential direction of the bit body or along the axial direction of the bit body, and the blocking groove is communicated with the bit leg groove.
In some embodiments, the bit body is further provided with a cone groove for placing the cone, the cone groove is communicated with the bit leg groove, and when the retaining groove is arranged on one side of the bit leg groove along the circumferential direction of the bit body, the retaining groove is located at a position where the bit leg groove is communicated with the cone groove.
In some embodiments, the retaining groove is arranged at the boundary line of the bit leg groove and the bit body along the radial direction of the bit body.
In some embodiments, the blocking groove has a first inner wall surface and a second inner wall surface that are arranged side by side along the radial direction of the bit body, the first inner wall surface and the second inner wall surface are both arc-shaped curved surfaces, and on the same cross section, the first inner wall surface, the second inner wall surface and the bit body are concentric.
In some embodiments, the bit body is provided with a bit leg groove for placing the bit leg, and the bit body is further provided with first welding grooves at two opposite sides of the bit leg groove, and the first welding grooves are used for fixing the bit leg and the bit body.
In some embodiments, the bit body is further provided with a second welding groove above the bit leg groove, the second welding groove is located between the two first welding grooves, and the second welding groove communicates the two first welding grooves.
In some embodiments, a third welding groove is formed in the bit leg corresponding to the first welding groove, a fourth welding groove is formed in the bit leg corresponding to the second welding groove, and the third welding groove is communicated with the fourth welding groove; when the bit leg install in when the bit leg groove, first weld the groove, the second weld the groove, the third weld the groove with the fourth weld the groove encloses into the welding space that is used for surfacing welding solder jointly.
In some embodiments, an outer side surface of the bit body covers a portion of the first weld groove or a portion of the second weld groove in a radial direction of the bit body; the outer side surface of the bit leg covers a part of the third weld groove or a part of the fourth weld groove in the radial direction of the bit body.
In some embodiments, the width of the stop block along the radial direction of the bit body ranges from 5mm to 40 mm.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a hybrid drill bit, wherein the bit body is provided with a retaining groove, the bit leg is provided with a stop block, the stop block can be placed in the retaining groove after the bit leg and a cone are installed on the bit body, and when the cone is subjected to outward thrust along the radial direction of the bit body and drives the bit leg to move outwards, the stop block and the retaining groove bear most of the thrust, so that the connection strength between the bit leg and the bit body is enhanced, the connection reliability between the bit leg and the bit body is ensured, and the accidents that the bit leg and the bit body crack and the bit leg fall into a well are avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic perspective view of a hybrid drill according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a hybrid drill bit according to an embodiment of the present invention without a bit leg;
FIG. 3 is a schematic perspective view of a first angle of view of a bit leg according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a second angle of view of a bit leg according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of a hybrid bit according to an embodiment of the present invention without a cone;
fig. 6 is an enlarged schematic view of a in fig. 3.
In the figure:
1. a bit body; 11. a baffle groove; 111. a first inner wall surface; 112. a second inner wall surface; 113. a third inner wall surface; 12. a bit leg slot; 121. a first mating surface; 122. a second mating surface; 123. a third mating surface; 124. a seventh mating face; 13. a first weld groove; 14. a second weld groove; 15. a gear groove;
2. a bit leg; 21. a stopper; 22. a fourth mating surface; 23. a fifth mating surface; 24. a sixth mating surface; 25. a third weld groove; 26. a fourth weld groove; 27. an eighth mating surface;
3. a cone;
4. a blade;
41. fixing the cutting teeth;
5. a nozzle;
6. and (3) soldering.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a hybrid drill bit, which can solve the problems that in the related technology, the connection strength between a bit leg and a drill bit body is insufficient, the connection reliability is low, the bit leg and the drill bit body are prone to cracking, and the bit leg falls into a well.
Referring to fig. 1 and 2, a hybrid drill bit according to an embodiment of the present invention may include: in the bit body 1, in this embodiment, blades 4 are uniformly arranged at the lower end of the bit body 1, nozzles 5 are arranged between the blades 4, the blades 4 are divided into an inner cone, a nose, a shoulder and a diameter-preserving section from inside to outside along the radial direction of the bit body 1, wherein each part of the blade 4 is provided with a fixed cutting tooth 41, the fixed cutting tooth 41 is preferably a diamond composite sheet, and the bit body 1 may be provided with a retaining groove 11; a bit leg 2 fixed to the bit body 1, wherein the bit leg 2 may be provided with a stopper 21 that is fitted into the retaining groove 11, that is, the stopper 21 may be placed in the retaining groove 11 when the bit leg 2 is mounted on the bit body 1; the cone 3 is fixed on the bit leg 2, in the embodiment, the cone 3 is provided with an inner hole, the cone 3 is sleeved on a shaft neck at the lower part of the bit leg 2 through the inner hole and is axially locked through a steel ball, and the cone 3 can be provided with cutting teeth of the cone 3; when the cone 3 is pushed along the radial direction of the bit body 1, the inner wall of the baffle groove 11 blocks the stop block 21 from moving along the radial direction of the bit body 1, and when the cone 3 is pushed outward along the radial direction of the bit body 1 and simultaneously drives the bit leg 2 to have a trend of moving outward, the stop block 21 and the baffle groove 11 bear most of the pushing force, so that the connection strength between the bit leg 2 and the bit body 1 is enhanced, the connection reliability between the bit leg 2 and the bit body 1 is ensured, and the occurrence of accidents of cracking between the bit leg 2 and the bit body 1 and well dropping of the bit leg 2 is avoided.
Referring to fig. 2, in some embodiments, the bit body 1 may be provided with a bit leg groove 12 for placing the bit leg 2, in this embodiment, the bit leg groove 12 penetrates through an outer side surface of the bit body 1 in a radial direction of the bit body 1, and the blocking groove 11 may be disposed on one side of the bit leg groove 12 in a circumferential direction of the bit body 1 or in an axial direction of the bit body 1, specifically, in this embodiment, one blocking groove 11 is disposed on each of left and right sides of the bit leg groove 12 in the circumferential direction of the bit body 1, in other embodiments, the blocking groove 11 may be disposed above the bit leg groove 12 in the axial direction of the bit body 1, and the blocking groove 11 may be communicated with the bit leg groove 12, so that the block 21 may be inserted into the blocking groove 11 together while the bit leg 2 is inserted into the bit leg groove 12, which is convenient to install.
Referring to fig. 2 and 5, in some alternative embodiments, the bit body 1 may further include a cone groove 15 for accommodating the cone 3, in this embodiment, the cone groove 15 is disposed below the bit leg groove 12, so that the cone 3 may be mounted on the lower end surface of the bit body 1, the cone groove 15 may be communicated with the bit leg groove 12, so as to ensure smooth engagement between the bit leg 2 and the cone 3, when the retaining groove 11 is disposed on one side of the bit leg groove 12 along the circumferential direction of the bit body 1, that is, the retaining groove 11 is disposed on the left and right sides of the bit leg groove 12, the retaining groove 11 may be disposed at a position where the bit leg groove 12 is communicated with the cone groove 15 in the axial direction, so that the retaining groove 11 is biased to be close to the cone 3 in the up-down direction, and when the cone 3 is subjected to an outward thrust, the thrust force that the retaining block 21 and the retaining groove 11 can bear a larger thrust force.
Referring to fig. 2, in some embodiments, the retaining groove 11 may be disposed at an intersection line of the bit leg groove 12 and the bit body 1 along a radial direction of the bit body 1, specifically, the bit leg groove 12 may have a first mating surface 121 biased to be close to an axis of the bit body 1, the first mating surface 121 may be a curved surface extending along a circumferential direction of the bit body 1 or may be a flat surface, and the retaining groove 11 may contact the first mating surface 121, such that the retaining groove 11 is disposed biased to be close to the axis of the bit body 1, a distance between the retaining groove 11 and an outer side surface of the bit body 1 is relatively large along the radial direction of the bit body 1, and the outer side of the retaining groove 11 has a sufficient capacity to block a thrust force of the stopper 21.
Referring to fig. 2 to 4, in the present embodiment, the bit leg slot 12 further includes a second matching surface 122 located on the left side of the first matching surface 121, a third matching surface 123 located on the right side of the first matching surface 121, and a seventh matching surface 124 located above the first matching surface 121, where the second matching surface 122, the third matching surface 123, and the seventh matching surface 124 may both be planes, the bit leg 2 is provided with a fourth matching surface 22 corresponding to the first matching surface 121, a fifth matching surface 23 corresponding to the second matching surface 122, a sixth matching surface 24 corresponding to the third matching surface 123, and an eighth matching surface 27 corresponding to the seventh matching surface 124, and when the bit leg 2 is installed in the bit leg slot 12, the fourth matching surface 22 may be attached to the first matching surface 121, the fifth matching surface 23 may be attached to the second matching surface 122, and the sixth matching surface 24 may be attached to the third matching surface 123.
Referring to fig. 2, in some alternative embodiments, the retaining groove 11 may have a first inner wall surface 111 and a second inner wall surface 112 that are arranged side by side along the radial direction of the bit body 1, that is, the first inner wall surface 111 and the second inner wall surface 112 are arranged substantially opposite to each other, the first inner wall surface 111 and the second inner wall surface 112 may be connected by a third inner wall surface 113, meanwhile, the first inner wall surface 111, the second inner wall surface 112 and the third inner wall surface 113 together form the retaining groove 11, the first inner wall surface 111 and the second inner wall surface 112 may be curved surfaces, and on the same cross section, the first inner wall surface 111, the second inner wall surface 112 and the bit body 1 are concentric, in this embodiment, compared with the first inner wall surface 111, the second inner wall surface 112 is deviated to the axis of the bit body 1, when the cone 3 receives a thrust force along the radial direction of the bit body 1, the thrust force is transmitted to the cone 3 to the cone 2, because the first inner wall surface 111 and the second inner wall surface 112 are concentric with the bit body 1, the thrust can vertically act on the first inner wall surface 111 along the radial direction, the first inner wall surface 111 is stressed stably, and when the thrust along the radial direction acts on the first inner wall surface 111, component force is not easily generated in other directions, so that great influence is not easily generated on the rotary drilling of the bit body 1.
Referring to fig. 6, in some embodiments, the width H of the stop 21 along the radial direction of the bit body 1 is in a range of 5 to 40mm, preferably in a range of 10 to 25mm, so that the stop 21 has a sufficient thickness to bear a thrust force and is not easily broken, and the stop 21 does not occupy a large space of the bit body 1 after being inserted into the retaining groove 11.
Referring to fig. 2, in some embodiments, the bit body 1 may further be provided with first weld recesses 13 on opposite sides of the bit leg recess 12, in this embodiment, the left side and the right side of the bit leg recess 12 are respectively provided with the first weld recesses 13, and the first weld recesses 13 preferably extend to the top and the bottom of the bit leg recess 12 along the axial direction of the bit body 1, and the first weld recesses 13 are used for fixing the bit leg 2 with the bit body 1, that is, the bit leg 2 may be welded with the bit body 1 by filling the first weld recesses 13 with the welding material 6; the first welding groove 13 is arranged to increase the accommodating space of the welding flux 6, so that the bit leg 2 and the bit body 1 can be firmly connected.
Referring to fig. 2, further, a second weld groove 14 may be further disposed above the bit leg groove 12 of the bit body 1, the second weld groove 14 is located between the two first weld grooves 13, and the second weld groove 14 communicates with the two first weld grooves 13, by disposing the second weld groove 14, after the second weld groove 14 communicates with the first weld groove 13, three sides of the bit leg groove 12 may be surrounded, so as to enhance the connection strength between the bit leg 2 and the bit body 1, in this embodiment, the first weld groove 13 and the second weld groove 14 are both formed by being recessed inward from the outer surface of the bit body 1.
Referring to fig. 2 to 4, in some embodiments, the bit leg 2 may be provided with a third weld recess 25 corresponding to the first weld recess 13, a fourth weld recess 26 corresponding to the second weld recess 14, and the third weld recess 25 is communicated with the fourth weld recess 26, in this embodiment, the third weld recess 25 and the fourth weld recess 26 may also be formed by being recessed from the outer surface of the bit leg 2 toward the inside thereof; when the bit leg 2 is installed in the bit leg slot 12, the first weld groove 13, the second weld groove 14, the third weld groove 25 and the fourth weld groove 26 together enclose a weld space for surfacing the solder 6, that is, the first weld groove 13, the second weld groove 14, the third weld groove 25 and the fourth weld groove 26 are all in a communicated state, one side of the solder 6 surfacing in the weld space is in firm contact with the bit body 1, and the other side is in firm contact with the bit leg 2.
Referring to fig. 1, in some alternative embodiments, the outer side surface of the bit body 1 may cover a part of the first weld recess 13 or a part of the second weld recess 14 in the radial direction of the bit body 1, that is, a part of the first weld recess 13 or a part of the second weld recess 14 may be covered by the outer side surface of the bit body 1, so that when the bit leg 2 has a tendency to move outward, the part of the bit body 1 located outside the first weld recess 13 or the second weld recess 14 may further block the solder 6, preventing the solder 6 from being separated from the bit body 1 in the radial direction; the outer side surface of the bit leg 2 covers a part of the third weld groove 25 or a part of the fourth weld groove 26 in the radial direction of the bit body 1, that is, a part of the third weld groove 25 or a part of the fourth weld groove 26 can be covered by the outer side surface of the bit leg 2, so that when the bit leg 2 has a tendency to move outwards, the solder 6 in the third weld groove 25 or the fourth weld groove 26 can block the bit leg 2, and the solder 6 is prevented from being separated from the bit leg 2 in the radial direction, and further the solder 6 further plays a role in preventing the risk of separating the bit body 1 from the bit leg 2; because the stop block 21 and the stop groove 11 are arranged, the load born by the welding flux 6 is greatly reduced, so that the connection reliability between the bit body 1 and the bit leg 2 is high, and because the load born by the welding flux 6 is small, the size of a welding space can be reduced in actual use, the using amount of the welding flux 6 is reduced, and the manufacturing cost of the drill bit is reduced.
The principle of the hybrid drill provided by the embodiment of the invention is as follows:
because the retaining groove 11 is arranged on the bit body 1, the stop block 21 is arranged on the bit leg 2, after the bit leg 2 and the cone 3 are installed on the bit body 1, the stop block 21 can be placed in the retaining groove 11, when the cone 3 bears outward thrust along the radial direction of the bit body 1 and simultaneously drives the bit leg 2 to move outward, most of the thrust is borne by the stop block 21 and the retaining groove 11, and when the bit leg 2 and the bit body 1 are fixed by adopting the welding flux 6, the load borne by the welding flux 6 is greatly reduced by arranging the stop block 21 and the retaining groove 11, so that the connection strength between the bit leg 2 and the bit body 1 is enhanced, the connection reliability between the bit leg 2 and the bit body 1 is ensured, and the occurrence of accidents that the bit leg 2 and the bit body 1 are cracked and the bit leg 2 fall into a well is avoided.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A hybrid drill bit, comprising:
the drill bit body (1) is provided with a baffle groove (11);
the bit leg (2) is fixed on the bit body (1), and a stop block (21) matched with the stop groove (11) is arranged on the bit leg (2);
a cone (3) fixed to the bit leg (2);
when the roller cone (3) is subjected to thrust along the radial direction of the bit body (1), the inner wall of the baffle groove (11) blocks the stop block (21) from moving along the radial direction of the bit body (1).
2. The hybrid drill bit of claim 1, wherein:
the bit body (1) is provided with a bit leg groove (12) for placing the bit leg (2), the baffle groove (11) is arranged on one side of the bit leg groove (12) along the circumferential direction of the bit body (1) or along the axial direction of the bit body (1), and the baffle groove (11) is communicated with the bit leg groove (12).
3. The hybrid drill bit of claim 2, wherein:
the bit body (1) is also provided with a cone groove (15) for placing the cone (3), the cone groove (15) is communicated with the bit leg groove (12),
when the retaining groove (11) is arranged on one side of the bit leg groove (12) along the circumferential direction of the bit body (1), the retaining groove (11) is positioned at the position where the bit leg groove (12) is communicated with the cone groove (15).
4. The hybrid drill bit of claim 2, wherein:
the baffle groove (11) is arranged at the boundary line of the bit leg groove (12) and the bit body (1) along the radial direction of the bit body (1).
5. The hybrid drill bit of claim 1, wherein:
the baffle groove (11) is provided with a first inner wall surface (111) and a second inner wall surface (112) which are arranged side by side along the radial direction of the drill body (1), the first inner wall surface (111) and the second inner wall surface (112) are both arc-shaped curved surfaces,
and on the same cross section, the first inner wall surface (111), the second inner wall surface (112) and the bit body (1) are concentric.
6. The hybrid drill bit of claim 1, wherein:
the bit body (1) is provided with a bit leg groove (12) for placing the bit leg (2), the bit body (1) is further provided with first welding grooves (13) on two opposite sides of the bit leg groove (12), and the first welding grooves (13) are used for fixing the bit leg (2) and the bit body (1).
7. The hybrid drill bit of claim 6, wherein:
the bit body (1) is further provided with a second welding groove (14) above the bit leg groove (12), the second welding groove (14) is located between the two first welding grooves (13), and the second welding groove (14) is communicated with the two first welding grooves (13).
8. The hybrid drill bit of claim 7, wherein:
the tooth leg (2) is provided with a third welding groove (25) corresponding to the first welding groove (13), a fourth welding groove (26) corresponding to the second welding groove (14), and the third welding groove (25) is communicated with the fourth welding groove (26);
when the bit leg (2) install in when bit leg groove (12), first weld groove (13), second weld groove (14), third weld groove (25) with fourth weld groove (26) enclose into the welding space who is used for surfacing welding solder (6) jointly.
9. The hybrid drill bit of claim 8, wherein:
the outer side surface of the bit body (1) covers a part of the first weld groove (13) or a part of the second weld groove (14) in the radial direction of the bit body (1);
the outer side surface of the bit leg (2) covers a part of the third weld groove (25) or a part of the fourth weld groove (26) in the radial direction of the bit body (1).
10. The hybrid drill bit of claim 1, wherein: the block (21) is 5-40 mm wide in the radial direction of the bit body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598051.9A CN113202415A (en) | 2021-05-31 | 2021-05-31 | Mixed drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110598051.9A CN113202415A (en) | 2021-05-31 | 2021-05-31 | Mixed drill bit |
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| Publication Number | Publication Date |
|---|---|
| CN113202415A true CN113202415A (en) | 2021-08-03 |
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|---|---|---|---|
| CN202110598051.9A Pending CN113202415A (en) | 2021-05-31 | 2021-05-31 | Mixed drill bit |
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| CN (1) | CN113202415A (en) |
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| CN110529044A (en) * | 2019-10-12 | 2019-12-03 | 常州市阿凡达工具制造有限公司 | A kind of New type detachable tricone bit |
| CN213205556U (en) * | 2020-07-20 | 2021-05-14 | 中石化江钻石油机械有限公司 | Mixed drill bit capable of preventing inner cone from being discharged |
| CN112832685A (en) * | 2020-07-20 | 2021-05-25 | 中石化江钻石油机械有限公司 | Vector tooth arrangement roller bit |
| CN112832686A (en) * | 2020-07-23 | 2021-05-25 | 中石化江钻石油机械有限公司 | Quick-change roller bit and rotary drilling rig |
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2021
- 2021-05-31 CN CN202110598051.9A patent/CN113202415A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104929528A (en) * | 2015-04-30 | 2015-09-23 | 西南石油大学 | Novel hydraulic moving palm cone and PDC (polycrystalline diamond compact) compound bit |
| CN105443040A (en) * | 2015-12-04 | 2016-03-30 | 西南石油大学 | Novel tricone bit |
| CN108625789A (en) * | 2018-05-22 | 2018-10-09 | 西南石油大学 | The composite drill bit of Split teeth wheel and PDC |
| CN108625788A (en) * | 2018-07-10 | 2018-10-09 | 西南石油大学 | A kind of novel pdc, gear wheel composite drill bit |
| CN110529044A (en) * | 2019-10-12 | 2019-12-03 | 常州市阿凡达工具制造有限公司 | A kind of New type detachable tricone bit |
| CN213205556U (en) * | 2020-07-20 | 2021-05-14 | 中石化江钻石油机械有限公司 | Mixed drill bit capable of preventing inner cone from being discharged |
| CN112832685A (en) * | 2020-07-20 | 2021-05-25 | 中石化江钻石油机械有限公司 | Vector tooth arrangement roller bit |
| CN112832686A (en) * | 2020-07-23 | 2021-05-25 | 中石化江钻石油机械有限公司 | Quick-change roller bit and rotary drilling rig |
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