CN209838305U - Drill bit for drilling deep hard stratum at ultrahigh rotating speed - Google Patents
Drill bit for drilling deep hard stratum at ultrahigh rotating speed Download PDFInfo
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- CN209838305U CN209838305U CN201920626919.XU CN201920626919U CN209838305U CN 209838305 U CN209838305 U CN 209838305U CN 201920626919 U CN201920626919 U CN 201920626919U CN 209838305 U CN209838305 U CN 209838305U
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- drill bit
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- rotation speed
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Abstract
The utility model discloses a drill bit for drilling deep hard stratum at ultrahigh rotating speed, which comprises a drill bit body, wherein one end of the drill bit body is fixedly connected with a joint, the other end of the drill bit body is fixedly provided with a plurality of drill bit matrix bodies which are uniformly distributed along the circumference, an interval is arranged between every two adjacent drill bit matrix bodies, and reinforced polycrystalline diamond cutting teeth are fixedly arranged on the working surface of each drill bit matrix body; still include the guarantor footpath that the lateral wall of a plurality of and drill bit matrix and the lateral wall of the body of turning round linked firmly, a plurality of guarantor footpath and a plurality of drill bit matrix one-to-one, the top of guarantor footpath and the working face parallel and level of drill bit matrix, have the interval between two adjacent guarantor footpaths, still be provided with the reposition of redundant personnel water course on the guarantor footpath, the top of reposition of redundant personnel water course and the top parallel and level of. The utility model discloses deep hard stratum ultrahigh speed creeps into with drill bit heat dissipation fast, arrange the powder fast, vibrate little, the antiseized antiskid.
Description
Technical Field
The utility model relates to a deep geological exploration instrument technical field especially relates to a hard stratum of deep superelevation rotational speed creeps into and uses drill bit.
Background
In recent years, China mainly attacks deep lands, deep seas and deep spaces and breaks through the deep lands, and builds a new scientific and technological pattern of a three-deep-one-soil national resource strategy. However, deep surveys still suffer from high ambient temperatures and poor rock drillability. For these problems, researchers at home and abroad often use high-temperature-resistant high-speed turbine drilling tools (2000rpm, linear velocity up to 2.5m/s) in combination with diamond-impregnated bits to break rock, but the actual effect is limited because the bit pressure is difficult to effectively load. On the basis, researchers at home and abroad start to adopt a rock breaking mode with ultrahigh rotating speed (8000rpm, linear speed of 10m/s), the problem that the rock is difficult to eat into a stratum under low drilling pressure is solved, rock breaking efficiency is greatly improved, and a good effect is achieved in a laboratory.
The existing diamond-impregnated bit adds even diamond particles in the bit matrix, and the essence is that small-particle diamond is used as a cutting element, so that the service life is longer and footage is more in the conventional hard formation. Therefore, the pregnant insert is distributed on the blade and only breaks rocks in a grinding mode, the rock debris is not smoothly discharged under the high-speed operation condition, the environmental temperature of the deep stratum is overhigh, the properties of diamond are greatly weakened, the brittleness is obviously increased, and the service life of the drill bit is shortened; because the drill rod is too long in deep hard formation drilling and the bit pressure is difficult to effectively load, the rock breaking capacity of the drill bit is insufficient, the stick-slip phenomenon still occurs under the condition of ultrahigh rotating speed, and the mechanical drilling speed is reduced. These factors severely restrict the efficient development of deep geological resources by conventional diamond-impregnated drill bits.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that above-mentioned prior art exists, provide a heat dissipation fast, arrange powder fast, vibration little, the skid-proof drill bit is used for deep hard stratum superelevation rotational speed creeps into.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a drill bit for drilling in deep hard stratum at ultrahigh rotating speed, which comprises a drill bit body, wherein one end of the drill bit body is fixedly connected with a joint, the other end of the drill bit body is fixedly provided with a plurality of drill bit matrix bodies which are uniformly distributed along the circumference, an interval is arranged between every two adjacent drill bit matrix bodies, and a reinforced polycrystalline diamond cutting tooth is fixedly arranged on the working surface of each drill bit matrix body; still include a plurality of with the gauge protection that the lateral wall of drill bit matrix and the lateral wall of the body of turning round linked firmly, a plurality of gauge protection and a plurality of drill bit matrix one-to-one, the top of gauge protection with the working face parallel and level of drill bit matrix, adjacent two have the interval between the gauge protection, still be provided with the reposition of redundant personnel water course on the gauge protection, the top of reposition of redundant personnel water course with the top parallel and level of gauge protection.
Preferably, a reinforced polycrystalline diamond cutting tooth is fixedly arranged on the working surface of each drill bit matrix, the number of the drill bit matrix is eight, and the eight reinforced polycrystalline diamond cutting teeth are same in orientation and distributed on the circumferences of three concentric circles with different radiuses.
Preferably, the diversion water channel is a through groove arranged on the side wall of the gauge.
Preferably, the reposition of redundant personnel water course includes vertical portion and kink, the top of vertical portion with the top parallel and level of guarantor footpath, the bottom of vertical portion with the top of kink is linked together, the kink downward sloping just towards another guarantor footpath.
Preferably, the direction of the bending parts in a plurality of the diversion water channels is the same.
Preferably, the width of the bent portion is greater than the width of the vertical portion.
Preferably, several of said bit carcasses are of equal size.
Preferably, the joint is in an inverted cone shape, and an external thread is arranged on the side wall of the joint.
The utility model discloses deep hard stratum ultrahigh speed is bored and is used drill bit has gained following technological effect for prior art:
the utility model discloses deep hard stratum ultrahigh speed creeps into with drill bit heat dissipation fast, arrange the powder fast, vibrate little, the antiseized antiskid. The utility model discloses drill bit for drilling in deep hard stratum ultrahigh rotating speed has improved the performance that the drill bit attacked the rock through setting up strenghthened type polycrystalline diamond cutting tooth, can form the furrow when the drill bit drills into, plays certain supporting role, guarantees simultaneously to arrange powder and drilling fluid and passes through, solves the skidding problem when hard compact stratum creeps into; the ordered arrangement of the polycrystalline diamond cutting teeth can enable the drill bit to cut into the rock more smoothly, and the supporting effect is achieved, so that the circulation of drilling fluid is facilitated, and rock debris is discharged; the reinforced polycrystalline diamond cutting teeth embedded into the working faces of the drill bit matrix are distributed according to a certain level and a vertical position, so that the drill bit is ensured to have the capability of continuously cutting rocks and can be stably excessive, the vibration frequency of the drill bit is reduced, the powder discharge and the drilling fluid are ensured to pass, and the stick slip is prevented. The utility model discloses deep hard formation superelevation rotational speed creeps into with drill bit and can make the drill bit adapt to the stress in deep hard formation through setting up the gauge protection, prevents the drill bit undergauge. When the drill bit moves at ultrahigh rotating speed, the friction between the drill bit and the rock can bring about the problem of large amount of heat, and through the support of the reinforced polycrystalline diamond cutting teeth and the design of the diversion water channel, the circulation of the drilling fluid is promoted, and the heat can be taken away quickly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of an embodiment I of the drill bit for drilling in a deep hard formation at an ultrahigh rotating speed according to the present invention;
FIG. 2 is a schematic diagram showing the arrangement of cutting teeth in the first embodiment of the drill bit for drilling in deep hard formation at ultrahigh rotation speed of the present invention;
FIG. 3 is a schematic structural diagram of a second embodiment of the drill bit for drilling in deep hard formations at ultrahigh rotation speed according to the present invention;
the drill bit comprises a bit body 1, a joint 2, a drill bit matrix 3, a reinforced polycrystalline diamond cutting tooth 4, a diameter protection 5, a flow dividing water channel 6, a vertical part 61 and a bending part 62.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at solving the problem that above-mentioned prior art exists, provide a heat dissipation fast, arrange powder fast, vibration little, the skid-proof drill bit is used for deep hard stratum superelevation rotational speed creeps into.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Example one
As shown in fig. 1-2, the drill bit for drilling in the deep hard formation at the ultrahigh rotation speed in this embodiment comprises a bit body 1, wherein the bottom end of the bit body 1 is fixedly connected with a joint 2, the top end of the bit body 1 is fixedly provided with eight bit carcasses 3 which are uniformly distributed along the circumference and have the same size, an interval is arranged between every two adjacent bit carcasses 3, and a reinforced polycrystalline diamond cutter 4 is fixedly arranged on the working surface of each bit carcass 3; eight strenghthened type polycrystalline diamond cutting teeth 4's orientation is the same and distribute on the circumference of the different concentric circles of three radius size, refer to fig. 2, the three strenghthened type polycrystalline diamond cutting teeth 4 of left side distribute on the circumference of the great concentric circle of radius, two strenghthened type polycrystalline diamond cutting teeth 4 of centre distribute on the circumference of the concentric circle that the radius is placed in the middle, the three strenghthened type polycrystalline diamond cutting teeth 4 of right side distribute on the circumference of the less concentric circle of radius, wherein the radius of three concentric circle differs 0.5mm in proper order, so set up the width of the furrow when eight strenghthened type polycrystalline diamond cutting teeth 4 can increase the drill bit and bore. By arranging the reinforced polycrystalline diamond cutting teeth 4, the performance of the drill bit for attacking rocks is improved, a furrow can be formed on the rocks when the drill bit drills, the reinforced polycrystalline diamond cutting teeth 4 play a certain supporting role, simultaneously, powder discharge and drilling fluid can be ensured to pass through, and the problem of skidding during drilling of a hard and compact stratum is solved; the strenghthened type polycrystalline diamond cutting teeth 4 of 3 working faces of each drill bit matrix, distribute according to certain level, vertical position, guarantee that the drill bit has the rock cutting ability of lasting and can be steady excessive, reduce drill bit vibration frequency, guarantee row powder and drilling fluid and pass through, prevent to glue smooth.
This embodiment deep hard formation superhigh speed creeps into and uses drill bit still includes eight guarantor footpaths 5, and every guarantor footpath 5 all links firmly with the lateral wall of drill bit matrix 3 and the lateral wall of the body of turning round, eight guarantor footpaths 5 and eight drill bit matrix 3 one-to-ones, the top of guarantor footpath 5 and the working face parallel and level of drill bit matrix 3, have the interval between two adjacent guarantor footpaths 5. The gauge 5 can make the drill adapt to the stress of the deep hard formation and prevent the drill from reducing.
Every guarantor 5 is last all to be provided with reposition of redundant personnel water course 6, and the top of reposition of redundant personnel water course 6 is parallel and level with the top of guarantor 5. In the present embodiment, diversion flume 6 is a through-slot disposed on a side wall of gauge 5. Reposition of redundant personnel water course 6 includes vertical portion 61 and kink 62, and the top of vertical portion 61 is even and level with the top of guarantor 5, and the bottom of vertical portion 61 is linked together with the top of kink 62, and kink 62 downward sloping and towards another guarantor 5. And the orientations of the bent portions 62 in the eight divided water passages 6 are the same, and the width of the bent portions 62 is larger than that of the vertical portions 61 in the same divided water passage 6.
The drill bit body 1 and the joint 2 play a connecting role, the joint 2 is in an inverted cone shape, and an external thread is arranged on the side wall of the joint 2.
When the drill bit moves at ultrahigh rotating speed, the friction between the drill bit and the rock can bring about the problem of large amount of heat, the supporting of the reinforced polycrystalline diamond cutting teeth 4 and the design of the diversion water channel 6 promote the circulation of the drilling fluid, and the drilling fluid can flow rapidly through the diversion water channel 6, so that the heat dissipation capacity of the drill bit is improved.
Example two
The embodiment provides a drill bit for drilling in a deep hard formation at an ultrahigh rotating speed, which is based on the first embodiment and further has the following characteristics: as shown in fig. 3, in this embodiment, the number of the drill bit matrix 3 is four, and three reinforced polycrystalline diamond cutting teeth 4 are uniformly and fixedly arranged on the working surface of each drill bit matrix 3; the 12 reinforced polycrystalline diamond cutting teeth 4 are all in the same direction and distributed on the same circumference. Eight gage 5 are also included in this embodiment, except that two spaced apart gage 5 are attached to the sidewalls of each carcass. This embodiment is through reducing the quantity of drill bit matrix 3, increasing the quantity of strenghthened type polycrystalline diamond cutting teeth 4, relative embodiment one, on the basis of having sacrificed a small amount of heat-sinking capability, has greatly improved the attack performance of drill bit, and this embodiment deep hard stratum ultrahigh rotational speed creeps into with the drill bit and is fit for the higher stratum of drilling hardness.
In the description of the present invention, it should be noted that the terms "top", "bottom", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The utility model provides a drill bit is used in drilling of deep hard stratum superelevation rotational speed which characterized in that: the drill bit comprises a drill bit body, wherein one end of the drill bit body is fixedly connected with a joint, the other end of the drill bit body is fixedly provided with a plurality of drill bit carcasses which are uniformly distributed along the circumference, a gap is arranged between every two adjacent drill bit carcasses, and reinforced polycrystalline diamond cutting teeth are fixedly arranged on the working surface of each drill bit carcass; still include a plurality of with the gauge protection that the lateral wall of drill bit matrix and the lateral wall of the body of turning round linked firmly, a plurality of gauge protection and a plurality of drill bit matrix one-to-one, the top of gauge protection with the working face parallel and level of drill bit matrix, adjacent two have the interval between the gauge protection, still be provided with the reposition of redundant personnel water course on the gauge protection, the top of reposition of redundant personnel water course with the top parallel and level of gauge protection.
2. The drill bit for ultra-high rotation speed drilling in the deep hard formation according to claim 1, wherein: the working face of each drill bit matrix is fixedly provided with eight reinforced polycrystalline diamond cutting teeth, and the eight reinforced polycrystalline diamond cutting teeth are same in orientation and distributed on the circumferences of three concentric circles with different radiuses.
3. The drill bit for ultra-high rotation speed drilling in the deep hard formation according to claim 1, wherein: the flow dividing water channel is a through groove arranged on the side wall of the gauge.
4. The drill bit for ultra-high rotation speed drilling in the deep hard formation according to claim 3, wherein: the reposition of redundant personnel water course includes vertical portion and kink, the top of vertical portion with the top parallel and level of guarantor footpath, the bottom of vertical portion with the top of kink is linked together, the kink downward sloping just faces another guarantor footpath.
5. The drill bit for ultra-high rotation speed drilling in the deep hard formation according to claim 4, wherein: the direction of the bending parts in the plurality of the diversion water channels is the same.
6. The drill bit for ultra-high rotation speed drilling in the deep hard formation according to claim 5, wherein: the width of the bending part is larger than that of the vertical part.
7. The drill bit for ultra-high rotation speed drilling in the deep hard formation according to claim 1, wherein: the drill bit tire bodies are equal in size.
8. The drill bit for ultra-high rotation speed drilling in the deep hard formation according to claim 1, wherein: the connector is in an inverted cone shape, and an external thread is arranged on the side wall of the connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920626919.XU CN209838305U (en) | 2019-05-05 | 2019-05-05 | Drill bit for drilling deep hard stratum at ultrahigh rotating speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920626919.XU CN209838305U (en) | 2019-05-05 | 2019-05-05 | Drill bit for drilling deep hard stratum at ultrahigh rotating speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209838305U true CN209838305U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920626919.XU Expired - Fee Related CN209838305U (en) | 2019-05-05 | 2019-05-05 | Drill bit for drilling deep hard stratum at ultrahigh rotating speed |
Country Status (1)
| Country | Link |
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| CN (1) | CN209838305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989714A (en) * | 2019-05-05 | 2019-07-09 | 中国地质大学（北京） | A kind of deep hard formation ultrahigh rotating speed drilling uses drill bit |
-
2019
- 2019-05-05 CN CN201920626919.XU patent/CN209838305U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989714A (en) * | 2019-05-05 | 2019-07-09 | 中国地质大学（北京） | A kind of deep hard formation ultrahigh rotating speed drilling uses drill bit |
| CN109989714B (en) * | 2019-05-05 | 2024-01-23 | 中国地质大学（北京） | Drill bit for ultra-high rotation speed drilling of deep hard stratum |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |