CN116181235A - Polycrystalline diamond compact anchor rod drill bit - Google Patents
Polycrystalline diamond compact anchor rod drill bit Download PDFInfo
- Publication number
- CN116181235A CN116181235A CN202211714325.7A CN202211714325A CN116181235A CN 116181235 A CN116181235 A CN 116181235A CN 202211714325 A CN202211714325 A CN 202211714325A CN 116181235 A CN116181235 A CN 116181235A
- Authority
- CN
- China
- Prior art keywords
- cavity
- end cover
- polycrystalline diamond
- water
- drill bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 32
- 239000010432 diamond Substances 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 114
- 238000007789 sealing Methods 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims 9
- 239000002131 composite material Substances 0.000 claims 2
- 238000005553 drilling Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Structural Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention relates to the technical field of drill bits, in particular to a polycrystalline diamond compact anchor rod drill bit, which utilizes a cutter front tip and a polycrystalline diamond compact arranged on the cutter front surface to cooperatively act to improve drilling efficiency; through locating the basin slip in the basin chamber to drive the basin through lifting mechanism and reciprocate, so that make the impact water hole be hidden in the basin intracavity or leak outward, upwards slide the basin when needs are washed by water, can avoid the piece to get into the impact water hole in, influence the result of use of impact water hole, the impact water hole is when striking the piece, can utilize the moisture to strike four splashes of water after to the piece surface to cool down the blade.
Description
Technical Field
The invention relates to the technical field of drill bits, in particular to a polycrystalline diamond compact anchor rod drill bit.
Background
The polycrystalline diamond compact bit has the characteristics of high wear resistance, high impact resistance, inclination prevention, balling prevention, high rotating speed and the like. The polycrystalline diamond compact bit can be used in the drilling process, so that the exploitation cost of an oil field can be greatly reduced, the exploitation speed can be increased, and the economic benefit of the oil field can be improved. The drill bit is generally provided with a water hole, so that chips entering a gap of the drill tooth can be washed away while the temperature of the drill tooth is reduced. However, the existing water hole is usually exposed outside the drill bit, so long as the water hole is not discharged in the process of taking and placing the drill bit or cleaning the bottom of the well, chips in the well can be blocked in the water hole, and some chips can be impacted by water after discharging water, but when some chips are blocked firmly or extremely in position, the effect of the water can not impact the chips, and the chips can block the water hole, so that the water discharging effect of the water hole is greatly affected.
Disclosure of Invention
In order to solve the technical problems, the invention provides a polycrystalline diamond compact anchor rod drill bit.
In order to achieve the above purpose, the present invention provides the following technical solutions: the polycrystalline diamond compact anchor rod drill bit comprises a joint, a matrix is arranged above the joint, a plurality of blades which are circumferentially arrayed are arranged above the matrix, and a plurality of polycrystalline diamond compacts are arranged on each blade; the device comprises a base body, wherein a mounting cavity is arranged in the center of the base body, an embedded block is arranged in the mounting cavity, a plurality of water tank cavities distributed in a circumferential array are arranged on the embedded block, water tanks are vertically and slidably connected in the water tank cavities, and impact water holes are formed in the outer side surfaces of the water tanks; the water tanks can slide relative to the water tank cavity by being driven by the lifting mechanism, so that the impact water holes can be hidden in the water tank cavity or leaked outside the water tank cavity; an inner cavity communicated with the water tank cavity is formed in the built-in block and below the water tank cavity, and the lifting mechanism is arranged in the inner cavity; the bottom of the water tank is communicated with a hard connecting pipe, and the lifting mechanism is fixed with the hard connecting pipe; a water cavity is arranged in the joint, a soft connecting pipe is arranged below the hard connecting pipe, and the soft connecting pipe is communicated with the water cavity.
Further, the lifting mechanism comprises a motor fixed in the cavity, a screw rod is connected to an output shaft of the motor in a transmission manner, a nut is arranged on the screw rod, a linkage disc is fixed on the periphery side of the nut, and a plurality of hard connecting pipes are fixed with the linkage disc.
Further, a plurality of water delivery channels are arranged below the inner cavity at the lower side of the built-in block, the bottom ends of the water delivery channels are communicated with the water cavity, and the water delivery channels are in one-to-one correspondence and are communicated with the positions of the soft connecting pipes.
Further, the motor is a battery motor, so that the motor is powered by a battery.
Further, an end cover connecting cavity is formed in the lower side of the built-in block, the upper side of the end cover connecting cavity is communicated with the inner cavity, and an end cover is detachably connected in the end cover connecting cavity.
Further, an annular first sealing ring is arranged below the end cover, and the outer diameter of the first sealing ring is larger than the diameter of the end cover; a second sealing ring is integrally formed on one side, close to the end cover, of the first sealing ring, and the inner diameter of the second sealing ring is also larger than the diameter of the end cover; a sealing groove for accommodating the second sealing ring is formed in the position, corresponding to the second sealing ring, of the bottom of the built-in block; when the end cover is connected in the end cover connecting cavity, the second sealing ring is just positioned in the sealing groove.
Further, the top surface of the blade is gradually protruded from the side to the center to form a blade tip body, so that the blade tip body comprises a blade tip and blade surfaces positioned at two sides of the blade tip; and a plurality of polycrystalline diamond compacts are uniformly distributed on each cutter front surface.
Further, the number of the water tanks is half of that of the blades, two impact water holes are formed in each water tank, and the two impact water holes in each water tank face to the left side and the right side of the same blade respectively.
Further, the top surface of the built-in block is in a smooth dome-shaped structure, so that the edge of the built-in block gradually protrudes upwards towards the center direction.
Further, the end cover is in threaded connection with the end cover connecting cavity; the lower indent of end cover is equipped with extracting tool spread groove, extracting tool spread groove is trilateral structure at least, just motor cell's battery and end cover rotate to be connected.
Compared with the prior art, the invention has the following beneficial effects: according to the polycrystalline diamond compact anchor rod drill bit provided by the invention, the cutter front point and the polycrystalline diamond compact arranged on the cutter front point are utilized, so that the cutter front point and the polycrystalline diamond compact are in synergistic effect, and the drilling efficiency is improved; through locating the basin slip in the basin chamber to drive the basin through lifting mechanism and reciprocate, so that make the impact water hole be hidden in the basin intracavity or leak outward, upwards slide the basin when needs are washed by water, can avoid the piece to get into the impact water hole in, influence the result of use of impact water hole, the impact water hole is when striking the piece, can utilize the moisture to strike four splashes of water after to the piece surface to cool down the blade.
Drawings
FIG. 1 is a schematic diagram of an axial structure of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is an enlarged schematic view of the structure shown at B in FIG. 3;
FIG. 5 is a schematic diagram of the front perspective structure of the present invention;
FIG. 6 is a schematic cross-sectional view taken along the direction B-B in FIG. 5;
FIG. 7 is a schematic diagram of an axial structure of the present invention (with the built-in block removed).
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. The specific meaning of the terms in the present invention will be understood by those of ordinary skill in the art in specific detail.
The invention provides a polycrystalline diamond compact anchor rod drill bit which mainly comprises a joint 1, a base body 2 fixed with the joint 1, a plurality of groups of blades 3 are arranged on the base body 2, the plurality of groups of blades 3 are distributed on the base body 2 in a circumferential array, and a plurality of polycrystalline diamond compacts 4 are distributed on each blade 3.
The center department of base member 2 is equipped with installation cavity 5, is equipped with built-in piece 6 in the installation cavity 5, is equipped with a plurality of basin 7 on the built-in piece 6, has seted up on the lateral surface of basin 7 and has bumped water hole 8, and a plurality of bumped water holes 8 all set up towards the outside for bumped water hole 8 extend the axis and be located between two sets of blades 3 that are adjacent, wash the piece or earth that will store up between adjacent blades 3, avoid its accumulative effect of using that influences the drill bit, can cool down blade 3 simultaneously, avoid the drill bit overheated. The bottom of basin 7 is connected with stereoplasm connecting pipe 9, has seted up water cavity 10 in the inside of joint 1, and water cavity 10 is linked together with stereoplasm connecting pipe 9 to when joint 1 connects the drilling rod (not shown in the figure), exogenous water can enter into water cavity 10 through the drilling rod and then enter into basin 7 through stereoplasm connecting pipe 9, discharges through the impact water hole 8 on the basin 7, assaults the washing to the piece, cools down the blade.
In the invention, a water tank cavity 11 is arranged on the built-in block 6 at a position corresponding to the water tank 7, the shape of the water tank cavity 11 is matched with that of the water tank 7, and the water tank 7 is vertically arranged in the water tank cavity 11 in a sliding manner. The lifting mechanism drives the water tanks 7 to lift and slide relative to the water tank cavity 11, so that the impact water holes 8 on the outer side surfaces of the water tanks 7 can be hidden in the water tank cavity 11, the impact water holes 8 are protected, chips or soil are prevented from entering the inside of the impact water holes 8, or the impact water holes 8 are enabled to leak outside the water tank cavity 11, and the impact water holes 8 can achieve a flushing function.
An inner cavity 12 is formed in the inner part of the built-in block 6 below the water tank cavity 11, the inner cavity 12 is communicated with the water tank cavity 11, and the lifting mechanism is arranged in the inner cavity 12.
The lifting mechanism comprises a motor 13 fixed in the inner cavity 12, the motor 13 is a battery motor and is powered by a battery 14, the battery 14 is connected with the motor 13 through a cable, the battery 14 is powered by the battery 14 to avoid the phenomenon that underground drilling cables are difficult to convey, the battery 13 of the battery motor is replaceable, and the battery 14 can be replaced to ensure sufficient electric quantity when the electric quantity is exhausted. A lead screw 15 is connected to the output shaft of the motor 13 in a transmission manner, and the top end of the lead screw 15 is rotatably connected to the top surface of the inner cavity 12. The screw rod 15 is rotationally connected with a screw nut 16 matched with the screw rod, a linkage disc 17 is fixed on the peripheral side of the screw nut 16, a plurality of connecting lugs 18 are uniformly distributed on the peripheral side of the linkage disc 17 in a circumferential array, the positions of the plurality of connecting lugs 18 and the plurality of hard connecting pipes 9 are in one-to-one correspondence, each connecting lug 18 is fixed with the corresponding hard connecting pipe 9, and when the motor 13 drives the screw nut 16 to move, the screw nut 16 drives the hard connecting pipes 9 and the water tank 7 to move up and down through the linkage disc 17 and the connecting lugs 18, so that the water tank 7 ascends and descends relative to the built-in block 6.
A plurality of vertically through water delivery channels 10 are arranged below the inner cavity 12 at the lower side of the built-in block 6, the bottom ends of the water delivery channels 19 are communicated with the water cavity 10, the water delivery channels 19 are in one-to-one correspondence with the positions of the hard connecting pipes 9, a soft connecting pipe 20 is connected between the lower ends of the hard connecting pipes 9 and the upper ends of the water delivery channels 19, and the soft connecting pipe 20 is positioned in the inner cavity 12. The flexible connection pipe 20 may be a flexible bellows hose or a hose having a length longer than the interval between the hard connection pipe 9 and the water delivery passage 19 to ensure that the hose can provide a sufficient ascent distance for the up-and-down movement of the water tank 7.
An end cover connecting cavity 21 is further formed on the lower side of the built-in block 6, the upper side of the end cover connecting cavity 21 is communicated with the inner cavity 12, and an end cover 22 is connected in the end cover connecting cavity 21, so that the end cover 22 can be detached. The battery 14 of the battery motor is fixed to the top of the end cover 22, and when the battery 14 needs to be replaced, the battery 14 can be taken out together only by detaching the end cover 22. The end cover 22 can be clamped with the end cover connecting cavity 21, or as another alternative implementation manner, the end cover 22 can be in threaded connection with the end cover connecting cavity 21, for convenient disassembly, a disassembly tool connecting groove 23 is concavely formed in the lower portion of the end cover 22, the disassembly tool connecting groove 23 is at least of a trilateral structure, so that the disassembly can be realized by inserting a disassembly tool into the disassembly tool (not shown in the figure) connecting groove 23 and then driving the end cover 22 to rotate, and under the connection manner, the battery 14 of the motor battery is preferably connected with the end cover 22 in a rotating way, and the cable for connecting the battery 14 and the motor 13 is prevented from being kinked when the end cover 22 is rotated.
An annular first sealing ring 24 is fixedly arranged below the end cover 22, the outer diameter of the first sealing ring 24 is larger than the diameter of the end cover 22, a second sealing ring 25 is integrally formed on one side, close to the end cover 22, of the first sealing ring 24, the inner diameter of the second sealing ring 25 is also larger than the diameter of the end cover 22, a sealing groove 26 for accommodating the second sealing ring 25 is formed in the position, corresponding to the second sealing ring 25, of the bottom of the built-in block 6, the second sealing ring 25 is arranged in the sealing groove 26, after the end cover 33 is connected in the end cover connecting cavity 21, the second sealing ring 25 can just enter the sealing groove 25 to seal the connecting position of the end cover 22, and water in the water cavity 10 is prevented from entering the inner cavity 12 through a gap of the end cover 22, so that the use of the motor 13 is affected.
In the invention, the built-in block 6 and the base body 2 are detachably connected in a threaded manner, in the implementation, the built-in block 6 and the base body 2 are connected through screws, a plurality of communicated screw grooves 27 are formed in positions corresponding to the built-in block 6 and the base body 2, the central axis of the screw grooves 27 is perpendicular to the central axis of the base body 2, and the screws 28 are connected in the screw grooves 27, so that the built-in block 6 and the base body 2 are detachably connected.
The top surface of the blade 3 is gradually protruded upwards from the lateral center to form a blade tip body, the blade tip body is provided with a blade tip 29 and two inclined and symmetrical blade surfaces 30, the direction of the blade tip 29 is consistent with the radial direction of the matrix 2, and the polycrystalline diamond compact 4 is distributed on the blade surfaces 30. The top height of the polycrystalline diamond compact 4 on the two blade surfaces 30 on the same blade 3 is not higher than the top height of the blade tip 29, so that when the drill bit works, the polycrystalline diamond compact 4 and the blade tip 29 can fully play a role.
In the invention, the top surface of the built-in block 6 is in a smooth dome-shaped structure, so that the edge of the built-in block 6 gradually protrudes upwards towards the center direction, and the accumulation of scraps and soil is avoided.
Two impact water holes 8 are symmetrically distributed on each water tank 7, and in order to enable the impact water holes 8 to effectively clean chips and soil between the adjacent blades 3, the number of the water tanks 7 is 1/2 of the blades 3, namely if the number of the water tanks 7 is 7, the number of the cutters 3 is 14, and the two impact water holes 8 on each water tank 7 face to the left side and the right side of the same blade 3 respectively.
It will be evident to those skilled in the art that the invention 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 characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.
Claims (10)
1. Polycrystalline diamond compact anchor rod drill bit, its characterized in that: the polycrystalline diamond composite wire comprises a joint, wherein a base body is arranged above the joint, a plurality of blades which are circumferentially arrayed are arranged above the base body, and a plurality of polycrystalline diamond composite sheets are arranged on each blade; the device comprises a base body, wherein a mounting cavity is arranged in the center of the base body, an embedded block is arranged in the mounting cavity, a plurality of water tank cavities distributed in a circumferential array are arranged on the embedded block, water tanks are vertically and slidably connected in the water tank cavities, and impact water holes are formed in the outer side surfaces of the water tanks; the water tanks can slide relative to the water tank cavity by being driven by the lifting mechanism, so that the impact water holes can be hidden in the water tank cavity or leaked outside the water tank cavity; an inner cavity communicated with the water tank cavity is formed in the built-in block and below the water tank cavity, and the lifting mechanism is arranged in the inner cavity; the bottom of the water tank is communicated with a hard connecting pipe, and the lifting mechanism is fixed with the hard connecting pipe; a water cavity is arranged in the joint, a soft connecting pipe is arranged below the hard connecting pipe, and the soft connecting pipe is communicated with the water cavity.
2. The polycrystalline diamond compact rock bolt drill bit according to claim 1, wherein: the lifting mechanism comprises a motor fixed in the cavity, a screw rod is connected to an output shaft of the motor in a transmission manner, a nut is arranged on the screw rod, a linkage disc is fixed on the periphery side of the nut, and a plurality of hard connecting pipes are fixed with the linkage disc.
3. The polycrystalline diamond compact rock bolt drill bit according to claim 1, wherein: the lower side of the built-in block is provided with a plurality of water delivery channels below the inner cavity, the bottom ends of the water delivery channels are communicated with the water cavity, and the water delivery channels are in one-to-one correspondence and are communicated with the positions of the soft connecting pipes.
4. The polycrystalline diamond compact rock bolt drill bit according to claim 2, wherein: the motor is a battery motor, so that the motor is powered by the battery.
5. The polycrystalline diamond compact rock bolt drill bit according to claim 4, wherein: the lower side of the built-in block is provided with an end cover connecting cavity, the upper side of the end cover connecting cavity is communicated with the inner cavity, and an end cover is detachably connected in the end cover connecting cavity.
6. The polycrystalline diamond compact rock bolt drill bit according to claim 5, wherein: an annular first sealing ring is arranged below the end cover, and the outer diameter of the first sealing ring is larger than the diameter of the end cover; a second sealing ring is integrally formed on one side, close to the end cover, of the first sealing ring, and the inner diameter of the second sealing ring is also larger than the diameter of the end cover; a sealing groove for accommodating the second sealing ring is formed in the position, corresponding to the second sealing ring, of the bottom of the built-in block; when the end cover is connected in the end cover connecting cavity, the second sealing ring is just positioned in the sealing groove.
7. The polycrystalline diamond compact rock bolt drill bit according to claim 1, wherein: the top surface of the blade is gradually protruded from the side to the center to form a blade tip body, so that the blade tip body comprises a blade tip and blade surfaces positioned at two sides of the blade tip; and a plurality of polycrystalline diamond compacts are uniformly distributed on each cutter front surface.
8. The polycrystalline diamond compact rock bolt drill bit according to claim 1, wherein: the number of the water tanks is half of that of the blades, two impact water holes are formed in each water tank, and the two impact water holes in each water tank face to the left side and the right side of the same blade respectively.
9. The polycrystalline diamond compact rock bolt drill bit according to claim 1, wherein: the top surface of the built-in block is in a smooth dome-shaped structure, so that the edge of the built-in block gradually protrudes upwards towards the center direction.
10. The polycrystalline diamond compact rock bolt drill bit according to claim 5, wherein: the end cover is in threaded connection with the end cover connecting cavity; the lower indent of end cover is equipped with extracting tool spread groove, extracting tool spread groove is trilateral structure at least, just motor cell's battery and end cover rotate to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211714325.7A CN116181235A (en) | 2022-12-30 | 2022-12-30 | Polycrystalline diamond compact anchor rod drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211714325.7A CN116181235A (en) | 2022-12-30 | 2022-12-30 | Polycrystalline diamond compact anchor rod drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116181235A true CN116181235A (en) | 2023-05-30 |
Family
ID=86451578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211714325.7A Pending CN116181235A (en) | 2022-12-30 | 2022-12-30 | Polycrystalline diamond compact anchor rod drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116181235A (en) |
-
2022
- 2022-12-30 CN CN202211714325.7A patent/CN116181235A/en active Pending
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