CN215369704U - Rope coring bit for crushing stratum - Google Patents
Rope coring bit for crushing stratum Download PDFInfo
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- CN215369704U CN215369704U CN202122145600.5U CN202122145600U CN215369704U CN 215369704 U CN215369704 U CN 215369704U CN 202122145600 U CN202122145600 U CN 202122145600U CN 215369704 U CN215369704 U CN 215369704U
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Abstract
The utility model discloses a rope coring bit for crushing a stratum, which comprises a drill rod and a blade. The utility model has the beneficial effects that: the first threaded hole is formed in the connecting part, the second threaded hole and the fastening bolt which are matched with the first threaded hole are also formed in the blade, and the blade is connected with the connecting part through the fastening bolt, so that the blade can be conveniently replaced when the blade is seriously worn, and the increase of the use cost due to the integral replacement is avoided; the drill rod, the drill bit and the cutter wings are all made of hard alloy materials, the hardness of the drill rod, the drill bit and the cutter wings are increased, the drill bit is prevented from being rusted, the service life of the drill bit is prolonged, the number of the cutter wings is six, the circular drill teeth and the pointed drill teeth are arranged on the surfaces of the cutter wings, the pointed drill teeth can be conveniently used for contacting the stratum firstly, the stratum is pre-crushed, the stress of the stratum is released, and the rock breaking effect of the drill bit is improved.
Description
Technical Field
The utility model relates to a drill bit, in particular to a rope coring drill bit for crushing a stratum, and belongs to the technical field of drill bits.
Background
The core bit is the rock core that present oil and well drilling extensively adopted and collects the drill bit, along with the development of compound piece material progress and cutting structure, adopts the core bit of installing compound piece more and more, if the core bit of wing formula and full sky star formula uses more in the engineering, the core bit of installing compound piece at present generally adopts the mode of shearing to break the rock to reach the mesh of quick well drilling. When the core bit works, the composite sheet overcomes the stratum stress to cut into the stratum and slide forwards under the action of bit pressure and torque, the rock is broken along the shearing direction of the rock under the action of the cutting teeth and generates plastic flow, and the rock debris generated by cutting is in a large sheet shape.
There are some problems with existing core bits when in use:
1) most of the existing coring drill bits are integrated with drill teeth, the drill teeth are worn after long-time use, and the whole drill bit needs to be replaced after the drill bits are worn to a certain extent so as to avoid influencing the drilling efficiency, so that the use cost is increased;
2) the existing coring bit has poor hardness and poor drilling capability, and when the existing coring bit is used in a hard geological environment, drilling can not be continued, so that the working efficiency is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The present invention has been made to solve the above problems, and an object of the present invention is to provide a wireline core drill bit for crushing a ground formation.
The utility model realizes the purpose through the following technical scheme: comprises that
The upper end of the drill rod is fixedly provided with a drill bit, the periphery of the drill bit is provided with a connecting part, and the interior of the drill rod is also fixedly provided with a through groove convenient for wire line coring;
and the blade is arranged on the connecting part, and a cavity communicated with the through groove is formed in the blade.
As a still further scheme of the utility model: the drill rod, the drill bit and the blades are all made of hard alloy materials, and the surfaces of the drill rod and the drill bit are provided with antirust coatings.
As a still further scheme of the utility model: the knife wing is characterized in that a first threaded hole is formed in the connecting portion, a second threaded hole matched with the knife wing is also formed in the knife wing, a fastening bolt is arranged in the second threaded hole, and the knife wing is connected with the connecting portion through the fastening bolt.
As a still further scheme of the utility model: the surface of the blade wing is provided with a plurality of round drill teeth and pointed drill teeth, and the exposed ends of the pointed drill teeth are higher than the round drill teeth.
As a still further scheme of the utility model: the blade is provided with six, and evenly distributed is in drill bit is all around.
As a still further scheme of the utility model: and a plurality of water spray holes are also formed in the peripheral side wall of the drill bit.
The utility model has the beneficial effects that:
1) the first threaded hole is formed in the connecting part, the second threaded hole and the fastening bolt which are matched with the first threaded hole are also formed in the blade, and the blade is connected with the connecting part through the fastening bolt, so that the blade can be conveniently replaced when the blade is seriously worn, and the increase of the use cost due to the integral replacement is avoided;
2) the drill rod, the drill bit and the cutter wings are all made of hard alloy materials, the hardness of the drill rod, the drill bit and the cutter wings are increased, the drill bit is prevented from being rusted, the service life of the drill bit is prolonged, the number of the cutter wings is six, the circular drill teeth and the pointed drill teeth are arranged on the surfaces of the cutter wings, the pointed drill teeth can be conveniently used for contacting the stratum firstly, the stratum is pre-crushed, the stress of the stratum is released, and the rock breaking effect of the drill bit is improved.
Drawings
FIG. 1 is a front view of the drill bit of the present invention;
FIG. 2 is a schematic view of a blade attachment structure of the drill bit of the present invention;
FIG. 3 is a schematic view of the structure of the present invention viewed from the top in the direction A-A.
In the figure: 1. the drilling rod, 2, the drill bit, 3, the through groove, 4, the blade, 5, the pointed drilling tooth, 6, the connecting part, 7, the first threaded hole, 8, the fastening bolt, 9, the second threaded hole, 10, the round drilling tooth and 11 and the water spraying hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to FIGS. 1 to 3, a rope core bit for crushing a ground layer includes
The upper end of the drill rod 1 is fixedly provided with a drill bit 2, the periphery of the drill bit 2 is provided with a connecting part 6, and the interior of the drill rod is also fixedly provided with a through groove 3 convenient for wire line coring;
and the blade 4 is arranged on the connecting part 6, and a cavity communicated with the through groove 3 is arranged in the blade.
In the embodiment of the utility model, the connecting part 6 is provided with the first threaded hole 7, the blade 4 is also provided with the second threaded hole 9 matched with the connecting part, the second threaded hole 9 is internally threaded with the fastening bolt 8, and the blade 4 and the connecting part 6 are connected through the fastening bolt 8, so that the blade 4 can be conveniently replaced when the blade 4 is seriously worn, and the increase of the use cost due to the integral replacement is avoided.
In the embodiment of the utility model, the plurality of water spraying holes 11 are further formed in the peripheral side wall of the drill bit 2, so that the surface of the drill bit 2 is conveniently cooled in a water spraying mode in the drilling process, and the service life of the drill bit 2 is prolonged.
Example two
Referring to FIGS. 1 to 3, a rope core bit for crushing a ground layer includes
The upper end of the drill rod 1 is fixedly provided with a drill bit 2, the periphery of the drill bit 2 is provided with a connecting part 6, and the interior of the drill rod is also fixedly provided with a through groove 3 convenient for wire line coring;
and the blade 4 is arranged on the connecting part 6, and a cavity communicated with the through groove 3 is arranged in the blade.
In the embodiment of the utility model, the drill rod 1, the drill bit 2 and the blade 4 are all made of hard alloy materials, and the surfaces of the drill rod 1 and the drill bit 2 are provided with antirust coatings, so that the hardness of the drill rod is improved, the drill bit is prevented from being rusted, and the service life of the drill bit is prolonged.
In the embodiment of the utility model, the surfaces of the blades 4 are provided with a plurality of circular drill teeth 10 and pointed drill teeth 5, and the exposed ends of the pointed drill teeth 5 are higher than the circular drill teeth 10, so that the pointed drill teeth 5 can be conveniently used for contacting the stratum first to pre-crush the stratum, the stress of the stratum is released, and the rock breaking effect of the drill bit 4 is improved.
In the embodiment of the utility model, six blades 4 are arranged and uniformly distributed around the drill bit 2, so that the drilling efficiency is improved.
The working principle is as follows: when the rope coring bit for crushing the stratum is used, firstly, the blades 4 are connected with the connecting part 6 through the fastening bolts 8, then the bit is connected with a drilling machine to carry out rock drilling, when the rope coring bit is used, the pointed drilling teeth 5 are firstly used for contacting the stratum to pre-crush the stratum and release the stress of the stratum, then the drilling operation can be carried out on the stratum, when the blades 4 are seriously worn, the fastening bolts 8 are unscrewed to replace the worn blades 4, the increase of the use cost caused by the whole replacement is avoided, the drill rod 1, the bit 2 and the blades 4 are all made of hard alloy materials, the hardness is increased, the corrosion is avoided, the service life of the bit is prolonged, the blades 4 are provided with six blades 4, the rock crushing effect of the bit is improved, a plurality of water spraying holes 11 are also arranged inside the peripheral side walls of the bit 2, and the drilling process is convenient, the surface of the drill bit 2 is radiated in a water spraying manner, so that the service life of the drill bit 2 is prolonged.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A wireline coring bit for fracturing a subterranean formation comprising
The drill rod (1) is fixedly provided with a drill bit (2) at the upper end, the periphery of the drill bit (2) is provided with a connecting part (6), and a through groove (3) convenient for wire line coring is fixedly arranged in the drill rod;
and the blade (4) is arranged on the connecting part (6), and a cavity communicated with the through groove (3) is formed in the blade.
2. A wireline core bit for fracturing a subterranean formation according to claim 1, wherein: the drill rod (1), the drill bit (2) and the blade (4) are all made of hard alloy materials, and antirust coatings are arranged on the surfaces of the drill rod (1) and the drill bit (2).
3. A wireline core bit for fracturing a subterranean formation according to claim 1, wherein: the knife wing is characterized in that a first threaded hole (7) is formed in the connecting portion (6), a second threaded hole (9) matched with the knife wing is also formed in the knife wing (4), a fastening bolt (8) is arranged in the second threaded hole (9) in a threaded mode, and the knife wing (4) is connected with the connecting portion (6) through the fastening bolt (8).
4. A wireline core bit for fracturing a subterranean formation according to claim 1, wherein: the surface of the blade (4) is provided with a plurality of round drilling teeth (10) and pointed drilling teeth (5), and the exposed ends of the pointed drilling teeth (5) are higher than the round drilling teeth (10).
5. A wireline core bit for fracturing a subterranean formation according to claim 1, wherein: the six blades (4) are uniformly distributed around the drill bit (2).
6. A wireline core bit for fracturing a subterranean formation according to claim 1, wherein: and a plurality of water spray holes (11) are also formed in the peripheral side wall of the drill bit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122145600.5U CN215369704U (en) | 2021-09-07 | 2021-09-07 | Rope coring bit for crushing stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122145600.5U CN215369704U (en) | 2021-09-07 | 2021-09-07 | Rope coring bit for crushing stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215369704U true CN215369704U (en) | 2021-12-31 |
Family
ID=79619769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122145600.5U Active CN215369704U (en) | 2021-09-07 | 2021-09-07 | Rope coring bit for crushing stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215369704U (en) |
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2021
- 2021-09-07 CN CN202122145600.5U patent/CN215369704U/en active Active
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