CN112145086B - Drill bit with auxiliary drilling function - Google Patents
Drill bit with auxiliary drilling function Download PDFInfo
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- CN112145086B CN112145086B CN202011042833.6A CN202011042833A CN112145086B CN 112145086 B CN112145086 B CN 112145086B CN 202011042833 A CN202011042833 A CN 202011042833A CN 112145086 B CN112145086 B CN 112145086B
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- auxiliary drilling
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- 238000005553 drilling Methods 0.000 title claims abstract description 142
- 230000007246 mechanism Effects 0.000 claims abstract description 143
- 239000011435 rock Substances 0.000 claims abstract description 107
- 230000036346 tooth eruption Effects 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 230000015572 biosynthetic process Effects 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002567 autonomic effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000000434 stratum corneum Anatomy 0.000 description 1
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- 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
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- 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
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- 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
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a drill bit with an auxiliary drilling function, which belongs to the technical field of geological drilling and comprises a drill bit body, an auxiliary drilling mechanism, a supporting mechanism and a supporting mechanism, wherein the auxiliary drilling mechanism is sleeved on the drill bit body, before the drill bit body drills a rock stratum, the auxiliary drilling mechanism is used for assisting the rock stratum in drilling, after the auxiliary drilling mechanism drills the rock stratum, the auxiliary drilling mechanism is detached, the drill bit body drills the drilled rock stratum, the supporting mechanism and the drill bit body are coaxially arranged and used for supporting the drill bit body, an external thread is arranged on the outer wall of the supporting mechanism, the supporting mechanism is provided with a hollow cavity and an internal thread, the supporting mechanism is in threaded connection with the supporting mechanism, and a connecting part used for being connected with a drill rod is arranged at the bottom of the supporting mechanism. The drill bit with the auxiliary drilling function has the technical effects that the drilling speed of a rock stratum is high, the rock stratum can be subjected to auxiliary drilling firstly, then the rock stratum is drilled through the drill bit body, and the rock drilling efficiency is high.
Description
Technical Field
The invention belongs to the technical field of geological drilling, and particularly relates to a drill bit with an auxiliary drilling function.
Background
A PDC (polycrystalline diamond compact) drill bit is a drill bit widely used in the fields of petroleum and geology, and has high hardness, wear resistance and long service life. The primary mode of breaking rock by PDC bits is to cut rock, which, because of its typically 3-7 blades, a dozen or so composite sheets, and the rock is inhomogeneous, there is severe lateral vibration during operation of the PDC bits, which impairs the efficiency of breaking rock. The rotation of drill bit relies on the moment of torsion of drilling rod, the drill bit itself can not produce autonomic rotation, for cutting rock, all realize depending on the moment of torsion of drilling rod, because the rock is inhomogeneous, and there is not other functions on the drill bit itself, can only creep into to the rock with the help of the drilling rod moment of torsion, to having crack or crackle rock, or loose rock, adopt ordinary drill bit just to creep into easily, but to harder rock, it just is difficult to creep into, also creeps into through the drill bit among the prior art, also do not have other fine modes yet, only creep into, this leads to the drilling efficiency of drill bit low, can not carry out the auxiliary drilling to the stratum preferentially, this influences the drilling progress to the rock. Therefore, a drill bit which can assist in drilling a rock stratum, drill after the rock stratum is drilled to a certain depth and then drill through a drill bit is urgently needed to be researched, the drilling progress and efficiency of the drill bit can be improved to a great extent, and the total construction period is shortened.
Disclosure of Invention
The invention aims to provide a drill bit with an auxiliary drilling function, and aims to solve the technical problems that the drill bit in the prior art is lack of auxiliary drilling on rocks when drilling the rocks, and the rock drilling efficiency is low.
In order to achieve the purpose, the invention adopts the technical scheme that: the drill bit with the auxiliary drilling function comprises a drill bit body, an auxiliary drilling mechanism, a supporting mechanism and a bearing mechanism, wherein cutting teeth are arranged at the top of the drill bit body and used for cutting and drilling geological rock strata; the auxiliary drilling mechanism is sleeved on the drill bit body, before the drill bit body drills the rock stratum, the auxiliary drilling mechanism is used for assisting in drilling the rock stratum, after the auxiliary drilling mechanism drills the rock stratum, the auxiliary drilling mechanism is detached, and the drill bit body drills the drilled rock stratum; the supporting mechanism is fixedly arranged at the bottom of the drill bit body, is coaxial with the drill bit body and is used for supporting the drill bit body, and external threads are arranged on the outer wall of the supporting mechanism; the bearing mechanism is provided with a hollow cavity, an internal thread is arranged in the hollow cavity, the bearing mechanism is in threaded connection with the supporting mechanism, and a connecting part used for being connected with a drill rod is arranged at the bottom of the bearing mechanism.
As another embodiment of the application, the drill bit with the auxiliary drilling function further comprises a locking mechanism which is arranged on the outer wall of the supporting mechanism and used for locking the auxiliary drilling mechanism.
As another embodiment of the application, the drill bit with the auxiliary drilling function further comprises a spraying mechanism which is arranged on the outer wall of the auxiliary drilling mechanism and used for spraying water into the rock stratum.
As another embodiment of the present application, the auxiliary drilling mechanism includes a sleeve and a cutting assembly, the upper end of the sleeve is provided with a first through hole, the lower end of the sleeve is provided with a second through hole, an internal thread is provided in the second through hole, the lower end of the sleeve is in threaded connection with an external thread on the outer wall of the drill bit body through the internal thread of the second through hole, and the lower end of the sleeve is locked on the drill bit body through the locking mechanism; cutting assembly locates the sleeve top for cut the stratum, cutting assembly with the coaxial setting of drill bit body, cutting assembly is earlier to the stratum cutting, back the drill bit body is right the stratum cutting, the last third through-hole that is equipped with of cutting assembly, jet orifice spun rivers pass in proper order on the drill bit body first through-hole and third through-hole to can reach in the stratum.
As another embodiment of the application, a plurality of fourth through holes are formed in the outer wall of the sleeve, and the injection mechanism is arranged in the fourth through holes and can inject water to the circumferential direction of the drill bit body.
As another embodiment of this application, elastic connection has the guide cylinder in the first through-hole, be equipped with a plurality of springs on the outer wall of guide cylinder, the spring outer end with the consolidation of first through-hole inner wall, jet orifice spun rivers pass in proper order on the drill bit body guide cylinder and third through-hole to can reach in the stratum corneum.
As another embodiment of the present application, the cutting assembly includes a cutting cone and cutting teeth, the cutting cone is conical, the interior of the cutting cone is hollow, the cutting cone is fixedly arranged at the upper end of the sleeve and is coaxial with the sleeve, and the third through hole is formed in the center of the top of the cutting cone; the cutting teeth are multiple and are arranged on the outer wall of the cutting cone and used for cutting rock strata.
As another embodiment of the present application, a plurality of cutting teeth are also provided on the outer wall of the sleeve adjacent the cutting assembly for cutting the formation around the cutting assembly.
As another embodiment of this application, injection mechanism includes shower nozzle and spray tube, the shower nozzle is arranged in the fourth through hole, the one end intercommunication of spray tube shower nozzle, the other end are used for the intercommunication the outside injection system of drill bit body, injection system with this internal jet orifice intercommunication of drill bit.
As another embodiment of the present application, the drill bit with auxiliary drilling function further comprises a protective sleeve sleeved on the cutting assembly, wherein the protective sleeve is made of a flexible non-metallic material;
the locking mechanism comprises an inserted rod inserted at the lower end of the sleeve, a locking block fixedly arranged on the outer wall of the drill bit body and a locking rod capable of sequentially penetrating through the inserted rod and the locking block, the inserted rod can be locked on the locking block after the locking rod penetrates through the locking block, and the sleeve is locked by means of the locking mechanism.
The drill bit with the auxiliary drilling function has the advantages that: compared with the prior art, the drill bit with the auxiliary drilling function comprises a drill bit body, an auxiliary drilling mechanism, a supporting mechanism and a bearing mechanism, wherein the top of the drill bit body is provided with cutting teeth for cutting and drilling geological rock strata; the auxiliary drilling mechanism is sleeved on the drill bit body, before the drill bit body drills the rock stratum, the auxiliary drilling mechanism is used for assisting in drilling the rock stratum, after the auxiliary drilling mechanism drills the rock stratum, the auxiliary drilling mechanism is detached, and the drill bit body drills the drilled rock stratum; the supporting mechanism is fixedly arranged at the bottom of the drill bit body, is coaxial with the drill bit body and is used for supporting the drill bit body, and external threads are arranged on the outer wall of the supporting mechanism; the bearing mechanism is provided with a hollow cavity, an internal thread is arranged in the hollow cavity, the bearing mechanism is in threaded connection with the supporting mechanism, and a connecting part used for being connected with a drill rod is arranged at the bottom of the bearing mechanism. The drill bit with the auxiliary drilling function solves the technical problems that the drill bit in the prior art lacks auxiliary drilling on rocks when drilling the rocks and has low rock drilling efficiency, has high rock drilling speed, can perform auxiliary drilling on the rock stratum firstly and then drill the rock stratum through the drill bit body, and has the technical effect of high rock drilling efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a drill bit with an auxiliary drilling function according to an embodiment of the present invention.
In the figure: 1. a drill bit body; 2. an auxiliary drilling mechanism; 21. a sleeve; 211. a fourth via hole; 22. a cutting assembly; 221. a third through hole; 222. cutting a cone; 223. cutting teeth; 3. a support mechanism; 4. a support mechanism; 5. a locking mechanism; 51. inserting a rod; 52. a locking block; 53. a lock lever; 6. an injection mechanism; 61. a spray head; 62. a nozzle; 7. a guide cylinder; 71. a spring; 8. a protective sleeve; 9. and (7) a plug.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a drill bit with auxiliary drilling function according to the present invention will now be described. The drill bit with the auxiliary drilling function comprises a drill bit body 1, an auxiliary drilling mechanism 2, a supporting mechanism 3 and a bearing mechanism 4, wherein cutting teeth are arranged at the top of the drill bit body 1 and used for cutting and drilling geological rock strata; the auxiliary drilling mechanism 2 is sleeved on the drill bit body 1, before the drill bit body 1 drills the rock stratum, the auxiliary drilling mechanism 2 is used for performing auxiliary drilling on the rock stratum firstly, after the auxiliary drilling mechanism 2 drills the rock stratum, the auxiliary drilling mechanism 2 is detached, and the drill bit body 1 drills the drilled rock stratum; the supporting mechanism 3 is fixedly arranged at the bottom of the drill bit body 1, is coaxial with the drill bit body 1 and is used for supporting the drill bit body 1, and external threads are arranged on the outer wall of the supporting mechanism; the bearing mechanism 4 is provided with a hollow cavity, an internal thread is arranged in the hollow cavity, the bearing mechanism 4 is in threaded connection with the supporting mechanism 3, and a connecting part used for being connected with a drill rod is arranged at the bottom of the bearing mechanism 4.
Compared with the prior art, the drill bit with the auxiliary drilling function comprises a drill bit body 1, an auxiliary drilling mechanism 2, a supporting mechanism 3 and a bearing mechanism 4, wherein cutting teeth are arranged at the top of the drill bit body 1 and used for cutting and drilling geological rock strata; the auxiliary drilling mechanism 2 is sleeved on the drill bit body 1, before the drill bit body 1 drills the rock stratum, the auxiliary drilling mechanism 2 is used for performing auxiliary drilling on the rock stratum firstly, after the auxiliary drilling mechanism 2 drills the rock stratum, the auxiliary drilling mechanism 2 is detached, and the drill bit body 1 drills the drilled rock stratum; the supporting mechanism 3 is fixedly arranged at the bottom of the drill bit body 1, is coaxial with the drill bit body 1 and is used for supporting the drill bit body 1, and external threads are arranged on the outer wall of the supporting mechanism; the bearing mechanism 4 is provided with a hollow cavity, an internal thread is arranged in the hollow cavity, the bearing mechanism 4 is in threaded connection with the supporting mechanism 3, and a connecting part used for being connected with a drill rod is arranged at the bottom of the bearing mechanism 4. The drill bit with the auxiliary drilling function solves the technical problems that the drill bit in the prior art lacks auxiliary drilling on rocks when drilling the rocks and has low rock drilling efficiency, has high rock drilling speed, can perform auxiliary drilling on the rock stratum firstly and then drill the rock stratum through the drill bit body 1, and has the technical effect of high rock drilling efficiency.
The bit of the invention, it can be PDC bit, there are chip grooves, gauge protection tooth, gushing out the orifice on the bit body 1, PDC bit can cut the rock or rock stratum, the operating principle of the bit refers to the operating method of PDC bit in the prior art, not to introduce here, only explain the bit body 1 has function of helping hand to creep into, can improve the bit body 1 on the basis of original drilling rod, and has increased and helped and crept into the auxiliary drilling mechanism 2 of the rock stratum, the cutting of the bit body 1 of helping hand is broken, thus can crush the rock fast, raise the breaking efficiency and progress to the rock, can meet the cutting drilling work of softer, harder and rock with gap or crackle, thus can meet and not need homogeneous rock to creep into, thus can guarantee the cutting efficiency of the bit body 1.
Firstly, the auxiliary drilling mechanism 2 is sleeved on the drill bit body 1, and the auxiliary drilling mechanism 2 rotates along with the drill bit body 1 by means of the rotating torque of the drill bit body, so that the rock stratum can be cut and drilled; after the auxiliary drilling mechanism 2 drills to a certain depth, the auxiliary drilling mechanism 2 is detached from the drill bit body 1, then the drill bit body 1 is used for cutting and drilling the rock stratum, on one hand, the function of positioning the drilling position is achieved, on the other hand, the function of auxiliary drilling to the rock stratum can be achieved, the auxiliary drilling can be achieved through one-time drilling to the rock stratum, the drill bit body 1 can be achieved through the second-time drilling to the rock stratum, after the rock stratum is drilled for one time, the rock stratum can be broken and cracked, after the second-time drilling is conducted, the rock stratum can be broken easily, the breaking efficiency of the rock stratum can be improved, and drilling and pore-forming are facilitated.
Supporting mechanism 3 is the radius truncated cone type, fixes in drill bit body 1 bottom, and bearing mechanism 4 is equipped with the inner groovy with 3 looks adaptations of supporting mechanism, and the cross-section is the U type, can realize threaded connection between supporting mechanism 3 and the bearing mechanism 4.
Referring to fig. 1, the drill bit with auxiliary drilling function further includes a locking mechanism 5 disposed on an outer wall of the supporting mechanism 4 for locking the auxiliary drilling mechanism 2. The auxiliary drilling mechanism 2 can be locked on the drill bit body 1 through the locking mechanism 5, so that the torque acting on the drill bit body 1 is effectively transmitted to the auxiliary drilling mechanism 2, and the phenomena of slipping and the like do not occur between the drill bit body 1 and the auxiliary drilling mechanism 2.
Specifically, locking mechanism 5 is detachable connected mode, when needs locking with supplementary drilling mechanism 2 lock to drill bit body 1 can, when need not use supplementary drilling mechanism 2, dismantle locking mechanism 5, then can dismantle supplementary drilling mechanism 2 from drill bit body 1, be convenient for directly use drill bit body 1 to creep into.
Referring to fig. 1, the drill bit with auxiliary drilling function further includes an injection mechanism 6 disposed on an outer wall of the auxiliary drilling mechanism 2 for injecting water into a rock formation. Generally, in the drilling process of the drill bit body 1, water flow needs to be sprayed into a rock stratum, so that friction can be reduced, and the rock stratum crushing efficiency can be improved. After the auxiliary drilling mechanism 2 is used, the water jet mechanism 6 can also play a role in jetting water flow to a rock stratum, the water jet pressure of the jet mechanism 6 can be adjusted, the jet distance of the water flow can be further adjusted, and the jet mechanism 6 jets towards the rock stratum around the drill bit body 1.
The jet holes on the drill bit body 1 can penetrate through the auxiliary drilling mechanism 2 and jet towards the front of the drill bit body 1, so that the front and the periphery of the drill bit body 1 can be simultaneously jetted through the cooperation of the auxiliary drilling mechanism and the auxiliary drilling mechanism, and the drilling efficiency of a rock stratum can be favorably improved.
As a specific embodiment of the drill bit with the auxiliary drilling function provided by the present invention, please refer to fig. 1, the auxiliary drilling mechanism 2 includes a sleeve 21 and a cutting assembly 22, the upper end of the sleeve 21 is provided with a first through hole, the lower end is provided with a second through hole, an internal thread is provided in the second through hole, the lower end of the sleeve 21 is in threaded connection with an external thread on the outer wall of the drill bit body 1 through the internal thread of the second through hole, and the lower end of the sleeve 21 is locked on the drill bit body 1 through a locking mechanism 5; cutting assembly 22 locates the sleeve 21 top for cut the stratum, and cutting assembly 22 and bit body 1 coaxial setting, cutting assembly 22 are earlier to the stratum cutting, and back bit body 1 is to the stratum cutting, are equipped with third through-hole 221 on cutting assembly 22, and the rivers of jet orifice spun on bit body 1 pass first through-hole and third through-hole 221 in proper order to can reach in the stratum. The cutting assembly 22 is used for cutting a rock formation, and preferably, the cutting assembly 22 is used for drilling a hole in the rock formation, the depth of the drilled hole is the height of the cutting assembly 22 or can be smaller than the height of the cutting assembly 22, so that the cutting assembly 22 only has an auxiliary drilling effect, a main drilling executive part is also the drill bit body 1, and the drill bit body 1 has larger torque and can play a main drilling role in the rock formation.
Referring to fig. 1, a plurality of fourth through holes 211 are formed in an outer wall of the sleeve 21, and the injection mechanism 6 is disposed in the fourth through holes 211 and can inject water upwards to a circumference of the drill body 1. The plug 9 is installed in the fourth through hole 211 without the injection mechanism 6, so that rock fragments can not flow into the auxiliary drilling mechanism 2 through the fourth through hole 211 when the auxiliary drilling mechanism 2 cuts rock strata.
Referring to fig. 1, a guide cylinder 7 is elastically connected in the first through hole, a plurality of springs 71 are disposed on an outer wall of the guide cylinder 7, an outer end of each spring 71 is fixedly connected to an inner wall of the first through hole, and water ejected from the ejection holes of the drill body 1 sequentially passes through the guide cylinder 7 and the third through hole 221 and can reach a formation. The guide cylinder 7 is detachably connected with the first through hole, and water flow jetted from the drill bit body 1 can pass through the guide cylinder 7 and then pass through the auxiliary drilling mechanism 2 to finally reach the rock stratum through the guide cylinder 7. Some of the water flow may be interrupted and because the pressure of the high pressure water is great, the water flow does not reach the formation.
Referring to fig. 1, the cutting assembly 22 includes a cutting cone 222 and cutting teeth 223, the cutting cone 222 is conical, the interior of the cutting cone is hollow, the cutting cone 222 is fixedly disposed at the upper end of the sleeve 21 and is coaxial with the sleeve 21, and the third through hole 221 is disposed at the center of the top of the cutting cone 222; a plurality of cutting teeth 223 are provided on an outer wall of the cutting cone 222 for cutting the rock formation. The cutting teeth 223 are PDC cutting teeth 223, and the cutting cone 222 is tapered, so that when the PDC cutting teeth 223 cut a rock formation, a conical inner groove is formed inside the rock formation, so that the drill bit body 1 can be inserted into the groove, and the rock formation can be further cut conveniently.
Referring to fig. 1, a plurality of cutting teeth 223 are also disposed on an outer wall of the sleeve 21 adjacent to the cutting assembly 22, and the cutting teeth 223 are used for cutting rock formation around the cutting assembly 22. The cutting teeth 223 are PDC cutting teeth 223, are uniformly distributed on the outer wall of the upper end of the sleeve 21, and simultaneously play a role in cutting the rock stratum with the cutting teeth 223 on the cutting cone 222. When the bottom surface of the cutting cone 222 contacts the formation, the cutting teeth 223 on the sleeve 21 cut the formation without causing the outer wall of the upper end of the sleeve 21 to abut directly against the formation.
Referring to fig. 1, the injection mechanism 6 includes a nozzle 61 and a nozzle 62, the nozzle 61 is disposed in the fourth through hole 211, one end of the nozzle 62 is communicated with the nozzle 61, the other end of the nozzle 62 is used for communicating with an injection system outside the drill body 1, and the injection system is communicated with an injection hole in the drill body 1. The high-pressure water pump is arranged outside the drill bit body 1, and the pressure or force of the spray head 61 spraying into the rock stratum can be controlled through reasonable adjustment and setting, so that the spray head 61 can smoothly spray the rock stratum. The jet pipe 62 is arranged in the drill body 1 in a penetrating manner, penetrates through the supporting mechanism 3 and the supporting mechanism 4, and is communicated with the high-pressure water pump, and preferably, a jet mechanism 6 is arranged in each fourth through hole 211.
As a specific embodiment of the drill with auxiliary drilling function provided by the present invention, please refer to fig. 1, the drill with auxiliary drilling function further includes a protective sleeve 8 sleeved on the cutting assembly 22, wherein the protective sleeve 8 is made of flexible non-metallic material; when the cutting assembly 22 is not in use, the protective sleeve 8 can be sleeved on the protective sleeve, so that the cutting teeth 223 can be prevented from hurting people and the like.
The locking mechanism 5 comprises an inserting rod 51 inserted at the lower end of the sleeve 21, a locking block 52 fixedly arranged on the outer wall of the drill bit body 1 and a locking rod 53 capable of sequentially penetrating through the inserting rod 51 and the locking block 52, the inserting rod 51 can be locked on the locking block 52 after the locking rod 53 penetrates through, and the sleeve 21 is locked by means of the locking mechanism 5. The lock rod 53 is a screw or a bolt, and can be fixed after penetrating through the insert rod 51 and the lock block 52, so that the adjustment is convenient.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (9)
1. A drill bit having an auxiliary drilling function, comprising:
the top of the drill bit body is provided with cutting teeth for cutting and drilling geological rock stratum;
the auxiliary drilling mechanism is sleeved on the drill bit body and used for performing auxiliary drilling on the rock stratum before the drill bit body drills the rock stratum, the auxiliary drilling mechanism is detached after the auxiliary drilling mechanism drills the rock stratum, and the drill bit body drills the drilled rock stratum;
the supporting mechanism is fixedly arranged at the bottom of the drill bit body, is coaxial with the drill bit body and is used for supporting the drill bit body, and external threads are arranged on the outer wall of the supporting mechanism; and
the bearing mechanism is provided with a hollow cavity and internally provided with internal threads, the bearing mechanism is in threaded connection with the supporting mechanism, and the bottom of the bearing mechanism is provided with a connecting part for connecting with a drill rod;
the auxiliary drilling mechanism is characterized by also comprising a locking mechanism which is arranged on the outer wall of the bearing mechanism and used for locking the auxiliary drilling mechanism.
2. A drill bit having an auxiliary drilling function according to claim 1, further comprising injection means provided on an outer wall of said auxiliary drilling means for injecting water into the rock formation.
3. A drill bit having a drilling-assist function as set forth in claim 2, wherein said drilling-assist mechanism comprises:
the upper end of the sleeve is provided with a first through hole, the lower end of the sleeve is provided with a second through hole, an internal thread is arranged in the second through hole, the lower end of the sleeve is in threaded connection with an external thread on the outer wall of the drill bit body through the internal thread of the second through hole, and the lower end of the sleeve is locked on the drill bit body through the locking mechanism; and
the cutting assembly is arranged at the top of the sleeve and used for cutting a rock stratum, the cutting assembly and the drill bit body are coaxially arranged, the cutting assembly firstly cuts the rock stratum, the drill bit body is right for cutting the rock stratum, the cutting assembly is provided with a third through hole, and water flow sprayed from the injection holes on the drill bit body sequentially passes through the first through hole and the third through hole and can reach the rock stratum.
4. A drill bit with auxiliary drilling function as defined in claim 3, wherein said sleeve has a plurality of fourth through holes on its outer wall, and said jetting means is disposed in said fourth through holes and can jet water circumferentially and upwardly to said bit body.
5. The drill bit with the auxiliary drilling function as claimed in claim 3, wherein a guide cylinder is elastically connected in the first through hole, a plurality of springs are arranged on the outer wall of the guide cylinder, the outer ends of the springs are fixedly connected with the inner wall of the first through hole, and water flow sprayed from the spray holes on the drill bit body sequentially passes through the guide cylinder and the third through hole and can reach the stratum.
6. A drill bit having a drill-assist function as set forth in claim 3, wherein said cutting assembly comprises:
the cutting cone is conical, the interior of the cutting cone is hollow, the cutting cone is fixedly arranged at the upper end of the sleeve and is coaxial with the sleeve, and the third through hole is formed in the center of the top of the cutting cone; and
and a plurality of cutting teeth are arranged on the outer wall of the cutting cone and used for cutting rock strata.
7. A drill bit having an auxiliary drilling function as recited in claim 6 wherein said outer wall of said sleeve adjacent said cutting assembly is also provided with a plurality of cutting teeth for cutting the formation about said cutting assembly.
8. The drill bit with the function of assisting in drilling according to claim 4, wherein the injection mechanism comprises a spray head and a spray pipe, the spray head is arranged in the fourth through hole, one end of the spray pipe is communicated with the spray head, the other end of the spray pipe is used for being communicated with an injection system outside the drill bit body, and the injection system is communicated with an injection hole in the drill bit body.
9. The drill bit with auxiliary drilling function as recited in claim 3, wherein the drill bit with auxiliary drilling function further comprises a protective sleeve sleeved on the cutting assembly, wherein the protective sleeve is made of flexible non-metallic material;
the locking mechanism comprises an inserted rod inserted at the lower end of the sleeve, a locking block fixedly arranged on the outer wall of the drill bit body and a locking rod capable of sequentially penetrating through the inserted rod and the locking block, the inserted rod can be locked on the locking block after the locking rod penetrates through the locking block, and the sleeve is locked by means of the locking mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042833.6A CN112145086B (en) | 2020-09-28 | 2020-09-28 | Drill bit with auxiliary drilling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042833.6A CN112145086B (en) | 2020-09-28 | 2020-09-28 | Drill bit with auxiliary drilling function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112145086A CN112145086A (en) | 2020-12-29 |
| CN112145086B true CN112145086B (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011042833.6A Active CN112145086B (en) | 2020-09-28 | 2020-09-28 | Drill bit with auxiliary drilling function |
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|---|---|
| CN (1) | CN112145086B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4657445A (en) * | 1984-03-12 | 1987-04-14 | Joseph Bossler | Core drill and method of removing a core therefrom |
| CN204782783U (en) * | 2015-06-12 | 2015-11-18 | 江汉石油钻头股份有限公司 | Novel PDC drill bit |
| CN105804662A (en) * | 2016-04-05 | 2016-07-27 | 武汉亿斯达工具有限公司 | Double-bearing simply supported beam type rock breaking hob and mixed PDC drill bit thereof |
| CN207260959U (en) * | 2017-08-14 | 2018-04-20 | 四川弘毅智慧知识产权运营有限公司 | A kind of PDC composite drill bits for improving drill bit center portion efficiency of breaking rock |
| CN109594917A (en) * | 2018-12-05 | 2019-04-09 | 马金伟 | Bi-directional combination type drilling rig |
| CN210049832U (en) * | 2019-04-28 | 2020-02-11 | 中国石油集团长城钻探工程有限公司 | Diamond drill bit with rear water spray hole |
-
2020
- 2020-09-28 CN CN202011042833.6A patent/CN112145086B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4657445A (en) * | 1984-03-12 | 1987-04-14 | Joseph Bossler | Core drill and method of removing a core therefrom |
| CN204782783U (en) * | 2015-06-12 | 2015-11-18 | 江汉石油钻头股份有限公司 | Novel PDC drill bit |
| CN105804662A (en) * | 2016-04-05 | 2016-07-27 | 武汉亿斯达工具有限公司 | Double-bearing simply supported beam type rock breaking hob and mixed PDC drill bit thereof |
| CN207260959U (en) * | 2017-08-14 | 2018-04-20 | 四川弘毅智慧知识产权运营有限公司 | A kind of PDC composite drill bits for improving drill bit center portion efficiency of breaking rock |
| CN109594917A (en) * | 2018-12-05 | 2019-04-09 | 马金伟 | Bi-directional combination type drilling rig |
| CN210049832U (en) * | 2019-04-28 | 2020-02-11 | 中国石油集团长城钻探工程有限公司 | Diamond drill bit with rear water spray hole |
Non-Patent Citations (1)
| Title |
|---|
| 《新型扩孔钻头的研究》;孙玉宁;《煤矿机械》;20081031;第29卷(第10期);129-130 * |
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| CN112145086A (en) | 2020-12-29 |
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