CN220081329U

CN220081329U - Jet type composite tooth drill bit suitable for soft and hard staggered stratum

Info

Publication number: CN220081329U
Application number: CN202321127507.4U
Authority: CN
Inventors: 张剑
Original assignee: Henan Quanliang Mining Machinery Co ltd
Current assignee: Henan Quanliang Mining Machinery Co ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-11-24
Anticipated expiration: 2033-05-11

Abstract

The utility model discloses a jet-type composite tooth drill bit suitable for soft and hard staggered stratum, which comprises a drill bit main body, wherein a cavity is formed in the drill bit main body, four blades are fixedly connected to the drill bit main body, the four blades are uniformly distributed on the drill bit main body, cutting teeth are fixedly connected to the four blades, the lower end of the drill bit main body is fixedly connected with an external thread pipe, the upper side of the blade positioned at the left side is fixedly connected with a conical cutting tooth, the vertical side wall of the blade is fixedly connected with a plurality of gauge protection particles, and the gauge protection particles are uniformly distributed on the outer side of the blade. When encountering soft and hard staggered formations, the utility model can quickly attack hard formations, can avoid plastic balling of drilling soft formations, can meet the drilling requirements of soft and hard staggered formations, and effectively improves the application range of the drill bit.

Description

Jet type composite tooth drill bit suitable for soft and hard staggered stratum

Technical Field

The utility model relates to the technical field of drilling tools, in particular to a jet type composite tooth drill bit suitable for soft and hard staggered stratum.

Background

The drill bit is a drilling tool which is frequently used in the fields of petroleum, coal, geological exploration and the like, and in the fields of petroleum, coal, geological exploration and the like, the drill bit frequently encounters gravel-sand-rock soft and hard staggered stratum, and the stratum has the characteristics of poor stability, low mechanical drilling rate, strong abrasiveness and the like.

The existing cone bit has a plurality of movable parts, so that the cone bit is easy to fall off when encountering hard stratum, while the three-wing PDC bit is more suitable for drilling soft stratum, but the problem of balling often occurs, so that the existing common bit can not meet the drilling requirements of soft and hard staggered stratum.

Disclosure of Invention

The utility model aims to provide a jet type composite tooth drill bit suitable for soft and hard staggered stratum so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a jet-type composite tooth drill bit suitable for soft and hard staggered stratum, which comprises a drill bit main body, wherein a cavity is formed in the drill bit main body, four blades are fixedly connected to the drill bit main body, the four blades are uniformly distributed on the drill bit main body, cutting teeth are fixedly connected to the four blades, the lower end of the drill bit main body is fixedly connected with an external thread pipe, the upper side of the blade positioned at the left side is fixedly connected with a conical cutting tooth, the vertical side wall of the blade is fixedly connected with a plurality of gauge protection particles, and the gauge protection particles are uniformly distributed on the outer side of the blade.

Further, four water holes communicated with the cavity are formed in the upper end of the drill bit main body, and a high-speed nozzle is fixedly connected in the water holes and located in an included angle between two adjacent blades.

Further, an auxiliary cutting tooth is fixedly connected to the blade on the left side, and the auxiliary cutting tooth is located at a position, close to the inner side, of the blade.

Further, two shackle grooves are symmetrically formed in the outer wall of the drill bit main body, and the shackle grooves are located between the cutter wings and the external threaded pipe.

Further, the diameter of the externally threaded pipe gradually decreases from top to bottom, and the maximum outer diameter of the externally threaded pipe is smaller than the diameter of the drill bit body.

Further, chip grooves are formed in the upper sides of the four blades, and the chip grooves are located in the middle of the upper sides of the blades.

Further, the backward inclination angle of the cutting tooth is sequentially 10 °, 12 °, 14 ° and 16 ° from the left side and counterclockwise, and the backward inclination angle of the auxiliary cutting tooth is 16 °.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the drill bit is arranged on the drill rod through the arranged drill bit main body, the blades, the cutting teeth, the external thread pipe, the conical cutting teeth and the gage particles, during drilling, the drill bit is arranged on the drill rod through the arranged external thread pipe, the arranged plurality of cutting teeth are mutually matched, the rock layer with harder texture can be efficiently and rapidly crushed in the process of high-speed rotation, the four blades are mutually matched with the cutting teeth, the problem of plastic balling of a viscous stratum can be avoided under the condition of bearing the weight of the drill bit, the arranged conical cutting teeth are used for knocking broken rock when the drill bit encounters rock debris jump, the gage particles can prevent the blades from being excessively worn by the well wall during drilling, so that the service life of the blades can be prolonged, the drilling diameter of the drill bit can be ensured, the drill bit can be rapidly and firmly crushed to the stratum when encountering soft and hard staggered stratum, the drilling requirement of the soft stratum can be met, and the application range of the drill bit can be effectively improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of another direction of the present utility model;

FIG. 3 is a front view of the present utility model;

FIG. 4 is a top view of the present utility model;

fig. 5 is a cross-sectional view of the present utility model.

In the figure: 1. a bit body; 2. a blade; 3. cutting teeth; 4. an external threaded tube; 5. conical cutting teeth; 6. gage particles; 7. a high-speed nozzle; 8. auxiliary cutting teeth; 9. a shackle groove; 10. chip removal groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the utility model provides a jet-type composite tooth drill bit suitable for soft and hard staggered stratum, which comprises a drill bit main body 1, wherein a cavity is formed in the drill bit main body 1, four blades 2 are fixedly connected to the drill bit main body 1, the four blades 2 are uniformly distributed on the drill bit main body 1, cutting teeth 3 are fixedly connected to the four blades 2, an external thread pipe 4 is fixedly connected to the lower end of the drill bit main body 1, conical cutting teeth 5 are fixedly connected to the upper side of the blades 2 on the left side, a plurality of gage particles 6 are fixedly connected to the vertical side wall of the blades 2, and the gage particles 6 are uniformly distributed on the outer side of the blades 2.

In the above embodiment, during drilling, the drill bit is mounted on the drill rod through the set external threaded pipe 4, the set plurality of cutting teeth 3 are mutually matched, the hard rock layer can be efficiently and rapidly broken in the high-speed rotation process, the set four blades 2 are mutually matched with the cutting teeth 3, the plastic balling problem of the viscous stratum can be avoided under the condition of bearing the bit pressure, the set conical cutting teeth 5 are used for knocking broken rock when the drill bit encounters rock cuttings jump, and the gage particles 6 can prevent the blades 2 from being excessively worn by the well wall during drilling, so that the service life of the blades 2 can be prolonged, the drilling diameter of the drill bit can be ensured, the drill bit can rapidly attack hard stratum when encountering soft and hard staggered stratum, the plastic balling problem can be avoided, the drilling requirement of the soft stratum can be met, and the application range of the drill bit is effectively improved.

Four water holes communicated with the cavity are formed in the upper end of the drill bit main body 1, a high-speed nozzle 7 is fixedly connected in the water holes, and the high-speed nozzle 7 is located in an included angle between two adjacent blades 2.

In this embodiment, the high-speed nozzle 7 is connected to the internal flow channel for flowing drilling fluid, and has the function of forming high-speed jet drilling fluid, thereby forming the purpose of hydraulic impact rock breaking.

The auxiliary cutting teeth 8 are fixedly connected to the blades 2 on the left side, the auxiliary cutting teeth 8 are located at positions, close to the inner sides, of the blades 2, and the cutting capability of the drill bit can be improved through the arranged auxiliary cutting teeth 8, so that the tapping performance of the drill bit can be improved.

Two shackle grooves 9 are symmetrically formed in the outer wall of the drill bit main body 1, the shackle grooves 9 are located between the cutter wings 2 and the external threaded pipe 4, and the convenience in disassembly and assembly of the drill bit can be improved through the arranged shackle grooves 9.

The diameter of the external thread pipe 4 is gradually reduced from top to bottom, and the maximum outer diameter of the external thread pipe 4 is smaller than the diameter of the drill bit main body 1, so that the stability of the connection between the drill bit and the drill rod can be improved.

Chip grooves 10 are formed in the upper sides of the four blades 2, the chip grooves 10 are located in the middle of the upper sides of the blades 2, and the arranged chip grooves 10 can rapidly discharge waste chips generated by drilling out of the top end of the drill bit, so that the chip removal effect of the drill bit is improved.

The backward inclination angle of the cutting teeth 3 is 10 degrees, 12 degrees, 14 degrees and 16 degrees from the left side and in a anticlockwise sequence, the backward inclination angle of the auxiliary cutting teeth 8 is 16 degrees, the cutting effect of the drill bit can be improved by arranging the cutting teeth 3 with different angles, and the drilling efficiency of the drill bit is effectively improved.

Working principle: during drilling, a drill bit is mounted on a drill rod through the set external thread pipe 4, the set plurality of cutting teeth 3 are matched with each other, a hard rock layer can be efficiently and rapidly broken in a high-speed rotating process, the set four blades 2 and the cutting teeth 3 are matched with each other, the problem of plastic balling of a viscous stratum can be avoided under the condition of bearing weight of drilling, the set conical cutting teeth 5 are used for knocking broken rock when the drill bit encounters rock chip jump, and the gauge protection particles 6 can prevent the blades 2 from being excessively worn by a well wall during drilling, so that the service life of the blades 2 can be prolonged, the drilling diameter of the drill bit can be ensured, the drill bit can rapidly attack hard stratum when encountering the soft and hard staggered stratum, the plastic balling can be avoided when the drill bit is used for drilling the soft stratum, the drilling requirement of the soft and hard staggered stratum can be met, and the application range of the drill bit is effectively improved.

It is noted that 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. Moreover, 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.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a jet-type composite tooth drill bit suitable for crisscross stratum of hardness, its characterized in that: including bit body (1), bit body (1) inside is provided with the cavity, four blades (2) of fixedly connected with on bit body (1), four blade (2) evenly distributed is on bit body (1), four equal fixedly connected with cutting tooth (3) on blade (2), bit body (1)'s lower extreme fixedly connected with external screw thread pipe (4), be located left side the upside fixedly connected with toper cutting tooth (5) of blade (2), the vertical lateral wall fixedly connected with of blade (2) a plurality of gauge protection granule (6), a plurality of gauge protection granule (6) evenly distributed is in the outside of blade (2).

2. A jet type composite tooth drill bit for soft and hard interlaced ground according to claim 1, wherein: four water holes communicated with the cavity are formed in the upper end of the drill bit main body (1), a high-speed nozzle (7) is fixedly connected in the water holes, and the high-speed nozzle (7) is located in an included angle between two adjacent blades (2).

3. A jet type composite tooth drill bit adapted for use in soft and hard interlaced formations as claimed in claim 2, wherein: the cutter blade (2) on the left side is fixedly connected with an auxiliary cutting tooth (8), and the auxiliary cutting tooth (8) is positioned at a position, close to the inner side, of the cutter blade (2).

4. A jet type composite tooth drill bit adapted for use in soft and hard interlaced formations according to claim 3, wherein: two shackle grooves (9) are symmetrically formed in the outer wall of the drill bit main body (1), and the shackle grooves (9) are located between the cutter blade (2) and the external thread pipe (4).

5. A jet type composite tooth drill bit for soft and hard interlaced ground according to claim 4, wherein: the diameter of the external thread pipe (4) is gradually reduced from top to bottom, and the maximum outer diameter of the external thread pipe (4) is smaller than the diameter of the drill bit main body (1).

6. A jet type composite tooth drill bit for soft and hard interlaced ground according to claim 5, wherein: chip grooves (10) are formed in the upper sides of the four blades (2), and the chip grooves (10) are located in the middle of the upper sides of the blades (2).

7. A jet type composite tooth drill bit adapted for use in soft and hard interlaced formations as defined in claim 6, wherein: the backward tilting angle of the cutting tooth (3) is 10 DEG, 12 DEG, 14 DEG and 16 DEG in turn from the left side and anticlockwise, and the backward tilting angle of the auxiliary cutting tooth (8) is 16 deg.