CN214616369U - Composite drilling tool - Google Patents
Composite drilling tool Download PDFInfo
- Publication number
- CN214616369U CN214616369U CN202120022180.9U CN202120022180U CN214616369U CN 214616369 U CN214616369 U CN 214616369U CN 202120022180 U CN202120022180 U CN 202120022180U CN 214616369 U CN214616369 U CN 214616369U
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- China
- Prior art keywords
- drill bit
- blade
- blades
- drilling tool
- base body
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- 238000005553 drilling Methods 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 230000036346 tooth eruption Effects 0.000 claims abstract description 35
- 238000005520 cutting process Methods 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 239000011435 rock Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 239000005300 metallic glass Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000008358 core component Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a composite drilling tool, including the drill bit base member, and install gear wheel and the wing on the drill bit base member, gear wheel and wing all are provided with a plurality of groups, fixed mounting is on the upper portion of drill bit base member on each group wing interval ground, equal fixed mounting has a gear wheel in the interval department of each two adjacent wings, the wing includes upper end and side, wing upper end fixed surface installs a plurality of front end cutting teeth, wing side surface scribbles and protects the neck coating, fixed surface at the neck coating installs a plurality of side cutting teeth, the side cutting tooth is for protecting the outside protrusion of neck coating, gear wheel fixed surface installs a plurality of toper form cutting teeth, the operation terminal surface that each toper form cutting tooth on the gear wheel is higher than the operation terminal surface that each front end cutting tooth on the wing formed. The utility model discloses the compound piece inefficacy problem of PDC that can avoid traditional drill bit to effectively strengthen the drill bit wearability and reduce wearing and tearing.
Description
Technical Field
The utility model relates to an ocean deep geological exploration equips technical field, concretely relates to compound drilling tool.
Background
The drill bit is a core component in geological, particularly marine deep geological drilling equipment, and the main function of the drill bit is to break rock formations to form a borehole so that subsequent drilling operations can be completed. In current drilling of deep wells and offshore wells, the commonly used bits are PDC bits and roller cone bits.
For the PDC drill bit, the core component in the PDC drill bit is a PDC composite sheet, which is mainly composed of a diamond layer and a cemented carbide substrate, and the diamond layer and the cemented carbide substrate are bonded by using metal cobalt as a binder. However, in the drilling process, especially when drilling hard rock formations in a high-pressure environment at the sea bottom, the bit needs to bear large torque, so that the diamond and the hard alloy layer substrate of the PDC composite sheet are rotated, and the bit fails. In addition, in the sea drilling operation, when the drill bit is exposed to a high-temperature and high-pressure environment for a long time and is faced to a hard stratum (such as carbonate rock, igneous rock, metamorphic rock) and other strata with high strength and hardness, the neck-protecting part of the PDC drill bit is worn very greatly, and the severe wear even causes adverse problems such as reduction of the diameter of a borehole. It can be seen that there are some disadvantages to using PDC bits.
For roller bit, most of the cutting teeth on the existing roller bit are in a pointed tooth-shaped structure, when drilling hard formations, the cutting teeth are worn greatly, and the cutting teeth and the roller bit body are welded together, so that extra cost is undoubtedly caused by roller bit replacement. It can be seen that there are some disadvantages to using roller cone bits as well.
In view of the deficiencies of both PDC and roller cone drill bits, there is a need for a drilling tool with improved performance, particularly wear resistance, to accommodate the drilling requirements of deep sea hard rock formations.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims at providing a composite drilling tool, it can solve the wear-resisting problem of drill bit.
Realize the technical scheme of the purpose of the utility model is that: a composite drilling tool comprises a drill bit base body, and a cone and blades arranged on the drill bit base body, wherein a plurality of groups of cones and blades are arranged on the cone base body, each group of blades are fixedly arranged on the upper part of the drill bit base body at intervals, a cone is fixedly arranged at the interval of each two adjacent blades,
the blade comprises an upper end and a side end, a plurality of front end cutting teeth are fixedly arranged on the surface of the upper end of the blade, a neck protection coating is coated on the surface of the side end of the blade, a plurality of side end cutting teeth are fixedly arranged on the surface of the neck protection coating, the side end cutting teeth protrude outwards relative to the neck protection coating,
the surface of the cone is fixedly provided with a plurality of conical cutting teeth, and the working end surface formed by each conical cutting tooth on the cone is higher than the working end surface formed by each front end cutting tooth on the blade.
Furthermore, the blade is in an inverted L shape, the upper end of the blade is parallel to the upper surface of the drill bit base body, and the side end of the blade is parallel to the axial direction of the drill bit base body.
And the cone is fixedly arranged at the top end of the oil storage bin.
The drill bit further comprises a flow channel and a water hole, wherein the water hole is formed in one side of at least one oil storage bin and penetrates through the drill bit base body in the axial direction, the water hole is communicated with the flow channel, and the flow channel is located on the lower portion of the drill bit base body.
Further, the blade comprises a chip groove which is fixedly arranged on the upper end surface of the blade and extends to the side end surface of the blade.
Further, the drilling tool also comprises a connecting port for connecting the composite drilling tool with an external device.
Further, the connecting port is a threaded interface.
Further, the blades of each group are fixedly arranged on the upper part of the drill bit base body at equal intervals.
Furthermore, the blades are installed with 3, and 3 blades are fixedly installed on the upper portion of the drill bit base body at equal intervals and are distributed in an annular shape of 120 degrees.
Further, the leading cutting teeth and the side cutting teeth are cylindrical.
The utility model has the advantages that: the utility model discloses utilize metallic glass self good material characteristic, prepared and be cylindrical metallic glass cutting teeth and amorphous neck cutting teeth to replace the compound piece of PDC of traditional drill bit, thereby avoided the inefficacy problem of the compound piece of PDC. The amorphous cone-shaped cutting teeth on the cone have obviously enhanced rock breaking capacity, are coupled and give full play to the advantages of the cone. Amorphous alloy is thermally sprayed on the neck protecting part of the drill bit, so that the wear resistance of the drill bit is enhanced, and the wear is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the present invention;
in the figure, 1-bit basal body, 2-cone, 3-blade, 4-front end cutting tooth, 5-neck protection coating, 6-flow channel, 7-oil storage bin, 8-side end cutting tooth, 9-chip groove, 10-water hole and 11-connecting port.
Detailed Description
The invention will be further described with reference to the drawings and the embodiments.
As shown in fig. 1 and 2, the composite drilling tool comprises a drill bit base body 1, and a roller cone 2, blades 3, a flow passage 6, an oil storage bin 7, a chip groove 9 and a water hole 10 which are arranged on the drill bit base body 1. The blades 3 are provided with a plurality of groups, and the blades 3 in each group are uniformly and fixedly arranged on the upper part of the drill bit base body 1 at equal intervals. The blade 3 includes an upper end and a side end, and is in an inverted L shape, the upper end of the blade 3 is substantially parallel to the upper surface of the drill base 1, the side end of the blade 3 is parallel to the axial direction of the drill base 1, and the outer surface of the side end of the blade 3 is located outside the side wall surface of the drill base 1. The upper end surface of the blade 3 is also fixedly provided with a plurality of front-end cutting teeth 4, and the front-end cutting teeth 4 are distributed in an array, for example, in two rows and fixed on the upper end surface of the blade 3 in parallel. The front end cutting teeth 4 are made of amorphous alloy materials by a vacuum suction casting method, and the front end cutting teeth 4 are fixedly arranged on the upper end surfaces of the blades 3 in an ultrasonic welding mode. The surface of the side end of the blade 3 is coated with a neck-protecting coating 5, the neck-protecting coating 5 is made of amorphous, namely the amorphous coating, and the neck-protecting coating 5 is formed by plasma spraying, namely a wear-resistant layer is formed. The neck-protecting coating 5 serves to protect the neck-protecting portion of the blades 3, so that the drill tool can be more wear-resistant with a reduced degree of wear during drilling operations. A side end cutting tooth 8 is fixedly arranged on the surface of the neck protection coating 5, the side end cutting tooth 8 protrudes outwards relative to the neck protection coating 5, and the axial direction (namely, the axial direction) of the side end cutting tooth 8 is perpendicular to the surface of the neck protection coating 5. The side end cutting teeth 8 are fixedly mounted on the surface of the neck coating 5 by ultrasonic welding, and further fixedly mounted on the side end surface of the blade 3.
The chip grooves 9 are fixedly arranged on the upper end surface of the blade 3 and extend to the side end surface of the blade 3, namely the chip grooves 9 are uniformly distributed and fixedly arranged on the surface of the blade 3, and the chip grooves 9 are used for discharging slag chips (such as soil chips and other impurities) generated in the drilling operation process of the composite drilling tool to the outside of the drilling tool so as to ensure the normal drilling operation of the drilling tool.
Preferably, the drill bit base body 1 is made of an amorphous alloy to improve wear resistance and service life.
In this embodiment, the blades 3 are preferably provided with 3 blades 3, and the 3 blades 3 are fixedly installed on the upper portion of the drill base body 1 at equal intervals and are annularly distributed in an array of 120 ° with each other, that is, an included angle between two adjacent blades 3 is 120 °.
Preferably, each blade 3 includes a main cutting edge and a minor cutting edge thereon, and the length of the main cutting edge is greater than that of the minor cutting edge, so as to improve the service life of the blade 3.
An oil storage bin 7 is fixedly arranged at the interval of each two adjacent blades 3, the oil storage bin 7 is directly and fixedly arranged on the upper part of the drill bit base body 1, and a cone 2 is arranged at the top end of each oil storage bin 7. The cone-shaped cutting teeth (not shown in the figure) are fixedly arranged on the surface of the cone 2, and the cone-shaped cutting teeth can be fixedly arranged on the surface of the cone 2 in a welding mode. The working end face formed by each conical cutting tooth on the cone 2 is slightly higher than the working end face formed by each front end cutting tooth 4 on the blade 3, that is, each conical cutting tooth and the front end cutting tooth 4 are equivalent to a working point, and the working point formed by the conical cutting tooth is slightly higher than the working point formed by the front end cutting tooth 4. Through the arrangement, the cutting operation can be carried out after the hard stratum is damaged in the operation process of the drilling tool, so that the drilling tool is protected.
One side of at least one oil storage bin 7 is provided with a water hole 10, and the water hole 10 penetrates through the drill bit base body 1 in the axial direction. The port 10 is also communicated with a flow passage 6 provided in the drill base body 1, and the flow passage 6 is provided in the lower portion of the drill base body 1 and is arranged in the axial direction. Through the port 10, the drilling tool can discharge seawater from the port 10 or inject clean washing water into the front end of the drilling tool through the port 10 during the action process. The lower part of the drill base body 1 is also fixedly provided with a connecting port 11, and the connecting port 11 is used for connecting the composite drilling tool with an external device, such as a driving rod on a driving device for driving the drilling tool. The connection port 11 is usually a screw structure, i.e. a screw interface, through which the drilling tool can be conveniently and quickly connected with an external device.
Similarly, in this embodiment, the oil storage bin 7 is preferably provided with 3 cones 2, and each cone 2 is annularly arranged in an array of 120 ° with each other, that is, an included angle between two adjacent cones 2 is 120 °.
Preferably, the leading and side cutting teeth 4, 8 are cylindrical. The working radius of the nose cutter 4 and the side cutter 8 on blade 3 is greater than the working radius of the cone cutter on cone 2.
In actual use, after the drilling tool is fixedly mounted on the driving device through the connecting port 11, the blades 3 and the cone 2 can be driven to rotate, and further the front-end cutting teeth 4 and the side-end cutting teeth 8 on the blades 3 and the conical cutting teeth on the cone 2 are driven, so that the hard stratum can be damaged and cut.
The utility model discloses utilize metallic glass self good material characteristic, prepared and be cylindrical metallic glass cutting teeth and amorphous neck cutting teeth to replace the compound piece of PDC of traditional drill bit, thereby avoided the inefficacy problem of the compound piece of PDC. The amorphous conical cutting teeth on the roller cone 2 obviously enhance the rock breaking capacity, couple and fully exert the advantages of the roller cone 2. Amorphous alloy is thermally sprayed on the neck protecting part of the drill bit, so that the wear resistance of the drill bit is enhanced, and the wear is reduced.
The embodiment disclosed in this specification is only an example of the single-sided features of the present invention, and the protection scope of the present invention is not limited to this embodiment, and any other embodiments having equivalent functions all fall into the protection scope of the present invention. Various other changes and modifications to the above-described embodiments and concepts may occur to those skilled in the art, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (8)
1. A composite drilling tool is characterized by comprising a drill bit base body, and a cone and blades which are arranged on the drill bit base body, wherein a plurality of groups of blades are arranged on the cone and the blades, the blades of each group are fixedly arranged on the upper part of the drill bit base body at intervals, a cone is fixedly arranged at the interval of each two adjacent blades,
the blade comprises an upper end and a side end, a plurality of front end cutting teeth are fixedly arranged on the surface of the upper end of the blade, a neck protection coating is coated on the surface of the side end of the blade, a plurality of side end cutting teeth are fixedly arranged on the surface of the neck protection coating, the side end cutting teeth protrude outwards relative to the neck protection coating, wherein the front end cutting teeth, the neck protection coating and the drill bit substrate are all made of amorphous alloy materials,
the surface of the cone is fixedly provided with a plurality of conical cutting teeth, the working end surface formed by each conical cutting tooth on the cone is higher than the working end surface formed by each front end cutting tooth on the blade,
the blade is in an inverted L shape, the upper end of the blade is parallel to the upper surface of the drill bit base body, the side end of the blade is parallel to the axial direction of the drill bit base body,
and an oil storage bin is fixedly arranged at each interval, and the roller wheel is fixedly arranged at the top end of the oil storage bin.
2. The composite drilling tool as claimed in claim 1, further comprising a flow channel and a water hole, wherein the water hole is arranged on one side of at least one of the oil storage bins, the water hole penetrates through the drill bit base body in the axial direction, the water hole is communicated with the flow channel, and the flow channel is positioned on the lower portion of the drill bit base body.
3. The composite drill of claim 1, further comprising a junk slot fixedly mounted to the blade upper end surface and extending to a blade lateral end surface.
4. The composite drilling tool of claim 1, further comprising a connection port for connecting the composite drilling tool to an external device.
5. The composite drilling tool of claim 4, wherein the connection port is a threaded interface.
6. The composite drilling tool as recited in claim 1, wherein each of the sets of blades are fixedly mounted on an upper portion of the bit base at regular intervals.
7. The composite drilling tool as claimed in claim 1, wherein the blades are installed with 3 blades, 3 blades are fixedly installed at the upper portion of the drill base body at equal intervals, and are annularly distributed at 120 ° to each other.
8. The composite drilling tool of claim 1, wherein the leading and trailing cutting teeth are cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120022180.9U CN214616369U (en) | 2021-01-04 | 2021-01-04 | Composite drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120022180.9U CN214616369U (en) | 2021-01-04 | 2021-01-04 | Composite drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214616369U true CN214616369U (en) | 2021-11-05 |
Family
ID=78435546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120022180.9U Active CN214616369U (en) | 2021-01-04 | 2021-01-04 | Composite drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214616369U (en) |
-
2021
- 2021-01-04 CN CN202120022180.9U patent/CN214616369U/en active Active
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