CN213980658U - PDC drill bit with high strength - Google Patents
PDC drill bit with high strength Download PDFInfo
- Publication number
- CN213980658U CN213980658U CN202021888132.XU CN202021888132U CN213980658U CN 213980658 U CN213980658 U CN 213980658U CN 202021888132 U CN202021888132 U CN 202021888132U CN 213980658 U CN213980658 U CN 213980658U
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- China
- Prior art keywords
- drill bit
- auxiliary
- working
- fixedly connected
- base body
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- 230000036346 tooth eruption Effects 0.000 claims description 34
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 8
- 238000005553 drilling Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a PDC drill bit with high strength, including the connecting axle, connecting axle upper end fixedly connected with drill bit base member, the three auxiliary blade of drill bit base member surface lower part fixedly connected with, the three work blade of drill bit base member surface middle part fixedly connected with, it is three auxiliary blade and the crisscross distribution of three work blade, and three auxiliary blade and three work blade all use drill bit base member axis to distribute as central annular array, constitute a runner between the left end face of auxiliary blade and the right-hand member face of work blade, constitute No. two runners between the right-hand member face of auxiliary blade and the left end face of work blade, No. two runner upper portions are opened there is the side nozzle of inside and outside break-over, open at the up end middle part of drill bit base member has the top nozzle. A PDC drill bit with high strength, stable in structure, broken rock work efficiency is high, and drill bit long service life.
Description
Technical Field
The utility model relates to a drilling tool technical field especially relates to a PDC drill bit with high strength.
Background
PDC bits for earth boring are mainly used for breaking rock by shearing, and the working mode thereof is generally as follows: the cutting teeth are firstly eaten into the stratum under the action of bit pressure, and then are rotated under the action of dynamic torque to form volume crushing on stratum rocks in a shearing mode. The power torque experienced by the drill bit is transmitted by the power equipment at the wellhead through the drill string to the drill bit. The conventional PDC drill bit is generally of a blade type structure, that is, a plurality of working blades are arranged on the drill bit, the number of the working blades is set according to the requirements of drilling engineering and the difference of stratum drillability, generally, the number of stratum blades with poorer drillability is more, and more blades are also required to be arranged in special well types such as directional wells and horizontal wells to ensure the stability of a tool face. The cutting teeth are arranged at the contact positions of the blades and the stratum according to a certain rule, the cutting teeth are generally made of cylindrical PDC composite sheets, a flow channel for flowing of drilling fluid is formed in the space between every two blades, the drilling fluid is sprayed out from the flow channel inside the drill bit through a nozzle arranged in the flow channel to provide cleaning and cooling for the cutting teeth, and meanwhile, rock debris generated by cutting is taken away from the bottom of the well.
The existing PDC drill bit for stratum drilling has the following defects: 1. the cutting teeth are not easy to eat into the stratum, and the effective volume of the rock is difficult to be broken, so that the drilling progress is slow; 2. when the drill meets the stratum with few soft and hard interlayers, the PDC diamond drill bit is not stable enough, and the cutting teeth are easy to be damaged by impact.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a PDC drill bit with high strength can effectively solve the problem in the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a PDC drill bit with high strength comprises a connecting shaft, wherein a drill bit base body is fixedly connected to the upper end of the connecting shaft, three auxiliary blades are fixedly connected to the lower portion of the outer surface of the drill bit base body, three working blades are fixedly connected to the middle portion of the outer surface of the drill bit base body, the three auxiliary blades and the three working blades are distributed in a staggered mode, the three auxiliary blades and the three working blades are distributed in an annular array mode by taking a central axis of the drill bit base body as a center, a first flow channel is formed between the left end face of each auxiliary blade and the right end face of each working blade, a second flow channel is formed between the right end face of each auxiliary blade and the left end face of each working blade, side nozzles penetrating inside and outside are formed in the upper portion of the second flow channel, a top nozzle is formed in the middle portion of the upper end face of the drill bit base body, each auxiliary blade comprises an auxiliary cutter body, and a plurality of auxiliary cutting teeth are fixedly connected to the front portion, far away from the drill bit base body, of the auxiliary cutter body, the auxiliary cutter body is fixedly connected with two reinforcing columns at the lower part of one end, far away from the drill bit base body, of the auxiliary cutter body, the two reinforcing columns are fixedly connected with wear-resistant balls at the end, far away from the auxiliary cutter body, of the reinforcing columns, the working cutter body comprises a working cutter body, a plurality of main cutting teeth are fixedly connected to the front part of one end, far away from the drill bit base body, of the working cutter body, and two auxiliary cutting teeth are fixedly connected to the middle part of one end, far away from the drill bit base body, of the working cutter body.
Preferably, the three opposite surfaces of the auxiliary cutter body are fixedly connected with the lower part of the outer surface of the drill bit base body.
Preferably, the three auxiliary cutter bodies are distributed in an annular array by taking the central axis of the drill bit base body as a center, and the plurality of auxiliary cutting teeth are longitudinally distributed along the right front side line of the auxiliary cutter bodies.
Preferably, the opposite surfaces of the three working cutter bodies are fixedly connected with the middle part of the outer surface of the drill bit base body.
Preferably, the three working cutter bodies are distributed in an annular array by taking the central axis of the drill bit base body as a center, the plurality of working cutter bodies are longitudinally distributed along the right front side line of the working cutter bodies, the number of the main cutting teeth is more than that of the auxiliary cutting teeth, and the diameters of the plurality of main cutting teeth are sequentially increased from top to bottom.
Preferably, the height of the three auxiliary cutter bodies is lower than the height of the three working cutter bodies.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses in, the crown of drill bit is constituteed jointly to three supplementary cutter body and three work cutter body, and the profile of crown shape is the toper, and the diameter from the top of the main cutting tooth that sets up increases in proper order, and the rock stratum is eaten into easily to the main cutting tooth of minor diameter, and the ground that the major diameter's main cutting tooth can downcut is in time discharged, has improved the speed of probing greatly.
2. The utility model discloses in, the enhancement post and the wear-resisting ball of setting on supplementary cutter body can provide effectual supporting role when the drill bit carries out directional operation, can play effectual help to the stabilizing tool face to improve slip efficiency. In addition, the impact on the drill bit can be reduced, and the service life of the drill bit is prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of a PDC drill bit having high strength according to the present invention;
FIG. 2 is a schematic view of an auxiliary blade of a PDC drill bit having high strength according to the present invention;
FIG. 3 is a schematic view of a working blade structure of a PDC drill bit having high strength according to the present invention;
fig. 4 is a front view of the main cutter of the PDC drill bit with high strength according to the present invention.
In the figure: 1. a connecting shaft; 2. a drill bit substrate; 3. auxiliary blades; 4. a working blade; 5. a first flow channel; 6. a second flow channel; 7. a side nozzle; 8. a top nozzle; 31. an auxiliary cutter body; 32. auxiliary cutting teeth; 33. a reinforcement column; 34. wear-resistant balls; 41. a working cutter body; 42. a main cutting tooth; 43. and a secondary cutting tooth.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-4, a PDC drill bit with high strength comprises a connecting shaft 1, a drill bit base 2 is fixedly connected to the upper end of the connecting shaft 1, three auxiliary blades 3 are fixedly connected to the lower portion of the outer surface of the drill bit base 2, three working blades 4 are fixedly connected to the middle portion of the outer surface of the drill bit base 2, the three auxiliary blades 3 and the three working blades 4 are distributed in a staggered manner, the three auxiliary blades 3 and the three working blades 4 are distributed in an annular array with the central axis of the drill bit base 2 as the center, a first flow channel 5 is formed between the left end surface of the auxiliary blade 3 and the right end surface of the working blade 4, a second flow channel 6 is formed between the right end surface of the auxiliary blade 3 and the left end surface of the working blade 4, a side nozzle 7 penetrating inside and outside is formed at the upper portion of the second flow channel 6, a top nozzle 8 is formed at the middle portion of the upper end, the auxiliary cutter body 31 is kept away from the auxiliary cutting teeth 32 of a plurality of fixedly connected with in the front of one end of the drill bit base body 2, the auxiliary cutting teeth 32 are composed of a PDC composite sheet, the auxiliary cutter body 31 is kept away from two reinforcing columns 33 of the fixedly connected with in the lower part of one end of the drill bit base body 2, the wear-resisting ball 34 of the equal fixedly connected with in one end of the auxiliary cutter body 31 is kept away from by two reinforcing columns 33, the working blade 4 comprises a working cutter body 41, the working cutter body 41 is kept away from a plurality of main cutting teeth 42 in the front of one end of the drill bit base body 2, the working cutter body 41 is kept away from two auxiliary cutting teeth 43 of the fixedly connected with in the middle of one end of the drill bit base body 2, and the main cutting teeth 42 and the auxiliary cutting teeth 43 are composed of the PDC composite sheet.
The opposite surfaces of the three auxiliary cutter bodies 31 are fixedly connected with the lower part of the outer surface of the drill bit base body 2; the three auxiliary cutter bodies 31 are distributed in an annular array by taking the central axis of the drill bit base body 2 as the center, and a plurality of auxiliary cutting teeth 32 are longitudinally distributed along the right front side line of the auxiliary cutter bodies 31; the opposite surfaces of the three working cutter bodies 41 are fixedly connected with the middle part of the outer surface of the drill bit base body 2; the three working cutter bodies 41 are distributed in an annular array by taking the central axis of the drill bit base body 2 as the center, the plurality of working cutter bodies 41 are longitudinally distributed along the right front side line of the working cutter bodies 41, the number of the main cutting teeth 42 is more than that of the auxiliary cutting teeth 43, and the diameters of the plurality of main cutting teeth 42 are sequentially increased from top to bottom; the three auxiliary cutter bodies 31 have a height lower than that of the three working cutter bodies 41.
It should be noted that, the utility model relates to a PDC drill bit with high strength, the main cutting teeth 42 and the auxiliary cutting teeth 43 arranged on the working blade 4 are used for cutting the rock of stratum, during the drilling process of the drill bit, the reinforcing column 33 arranged on the extension of the three auxiliary cutter bodies 31 and the wear-resisting ball 34 fixed at the outer end of the reinforcing column 33 can provide extra well wall supporting force for the drill bit, reduce the friction resistance suffered by the drill bit during the drilling process, thereby improving the stability of the drill bit; the space between the auxiliary cutter body 31 and the working cutter body 41 forms a first flow passage 5 and a second flow passage 6 for the flowing of drilling fluid, and the drilling fluid is sprayed out through a side nozzle 7 and a top nozzle 8 arranged in the second flow passage 6 to provide cleaning and cooling for cutting teeth, and meanwhile, rock debris generated by cutting is taken away from the bottom of a well.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A PDC drill bit with high strength, includes connecting axle (1), its characterized in that: the drill bit comprises a connecting shaft (1), a drill bit base body (2) is fixedly connected to the upper end of the connecting shaft (1), three auxiliary blades (3) are fixedly connected to the lower portion of the outer surface of the drill bit base body (2), three working blades (4) are fixedly connected to the middle portion of the outer surface of the drill bit base body (2), the three auxiliary blades (3) and the three working blades (4) are distributed in a staggered mode, the three auxiliary blades (3) and the three working blades (4) are distributed in an annular array mode by taking a middle shaft of the drill bit base body (2) as a center, a first flow channel (5) is formed between the left end face of each auxiliary blade (3) and the right end face of each working blade (4), a second flow channel (6) is formed between the right end face of each auxiliary blade (3) and the left end face of each working blade (4), side nozzles (7) penetrating inside and outside are formed in the upper portion of each second flow channel (6), and a top nozzle (8) is formed in the middle portion of the upper end face of the drill bit base body (2), the auxiliary cutter wing (3) comprises an auxiliary cutter body (31), a plurality of auxiliary cutting teeth (32) are fixedly connected to the front portion of one end, far away from the drill base body (2), of the auxiliary cutter body (31), two reinforcing columns (33) are fixedly connected to the lower portion of one end, far away from the drill base body (2), of the auxiliary cutter body (31), two wear-resistant balls (34) are fixedly connected to the ends, far away from the auxiliary cutter body (31), of the reinforcing columns (33), the working cutter wing (4) comprises a working cutter body (41), a plurality of main cutting teeth (42) are fixedly connected to the front portion of one end, far away from the drill base body (2), of the working cutter body (41), and two auxiliary cutting teeth (43) are fixedly connected to the middle portion of one end, far away from the drill base body (2), of the working cutter body (41).
2. A PDC bit having high strength according to claim 1, wherein: the opposite surfaces of the three auxiliary cutter bodies (31) are fixedly connected with the lower part of the outer surface of the drill bit base body (2).
3. A PDC bit having high strength according to claim 2, wherein: the three auxiliary cutter bodies (31) are distributed in an annular array by taking the middle shaft of the drill bit base body (2) as the center, and a plurality of auxiliary cutting teeth (32) are longitudinally distributed along the right front side line of the auxiliary cutter bodies (31).
4. A PDC bit having high strength according to claim 1, wherein: the opposite surfaces of the three working cutter bodies (41) are fixedly connected with the middle part of the outer surface of the drill bit base body (2).
5. A PDC bit having a high strength according to claim 4, wherein: the three working cutter bodies (41) are distributed in an annular array by taking a middle shaft of the drill bit base body (2) as a center, a plurality of the working cutter bodies (41) are longitudinally distributed along the right front side line of the working cutter bodies (41), the number of the main cutting teeth (42) is more than that of the auxiliary cutting teeth (43), and the diameters of the plurality of the main cutting teeth (42) are sequentially increased from top to bottom.
6. A PDC bit having high strength according to claim 2, wherein: the heights of the three auxiliary cutter bodies (31) are lower than the heights of the three working cutter bodies (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021888132.XU CN213980658U (en) | 2020-09-02 | 2020-09-02 | PDC drill bit with high strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021888132.XU CN213980658U (en) | 2020-09-02 | 2020-09-02 | PDC drill bit with high strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213980658U true CN213980658U (en) | 2021-08-17 |
Family
ID=77253032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021888132.XU Expired - Fee Related CN213980658U (en) | 2020-09-02 | 2020-09-02 | PDC drill bit with high strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213980658U (en) |
-
2020
- 2020-09-02 CN CN202021888132.XU patent/CN213980658U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220704 Address after: No. 2 Hongyuan Road, Hongqiao petroleum service area, Luntai County, Bayingolin Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region 841600 Patentee after: Damonde (Xinjiang) drilling equipment manufacturing Co.,Ltd. Address before: 232001 No.168 Taifeng street, Nanxin District, Huainan City, Anhui Province Patentee before: Anhui University of Science and Technology |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210817 |