CN112177534B - PDC drill bit with booster rotary excitation function - Google Patents
PDC drill bit with booster rotary excitation function Download PDFInfo
- Publication number
- CN112177534B CN112177534B CN202011042787.XA CN202011042787A CN112177534B CN 112177534 B CN112177534 B CN 112177534B CN 202011042787 A CN202011042787 A CN 202011042787A CN 112177534 B CN112177534 B CN 112177534B
- Authority
- CN
- China
- Prior art keywords
- drill bit
- bit body
- excitation
- bearing
- pdc
- 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.)
- Active
Links
- 230000005284 excitation Effects 0.000 title claims abstract description 112
- 230000007246 mechanism Effects 0.000 claims abstract description 157
- 239000011435 rock Substances 0.000 claims abstract description 39
- 238000005553 drilling Methods 0.000 claims abstract description 23
- 230000036346 tooth eruption Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000007921 spray Substances 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims 5
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract 1
- 238000005507 spraying Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 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
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a PDC drill bit with a booster rotary excitation function, which belongs to the technical field of geological drilling and comprises a drill bit body, a rotating mechanism, a bearing mechanism and an excitation mechanism, wherein PDC cutting teeth are arranged at the top of the drill bit body and are used for cutting and drilling geological strata, the rotating mechanism is arranged at the bottom of the drill bit body and is coaxially arranged with the drill bit body, the drill bit body can rotate relative to the rotating mechanism, the bearing mechanism is used for bearing the lower end of the rotating mechanism and is detachably connected with the rotating mechanism, the bottom of the bearing mechanism is used for connecting a drill rod, the excitation mechanism is circumferentially arranged at the upper end of the bearing mechanism and is connected with the drill bit body, and the excitation mechanism is used for generating excitation force and driving the drill bit body to rotate. The PDC drill bit with the booster rotary excitation function has the technical effects that the booster rotary can be generated when the PDC drill bit drills into rock, excitation can be generated through the excitation mechanism, the cutter is beneficial to the heterogeneous rock, and the cutting progress and efficiency are improved.
Description
Technical Field
The invention belongs to the technical field of geological drilling, and particularly relates to a PDC drill bit with a booster rotary excitation function.
Background
PDC (polycrystalline diamond compact) drill bits are a type of drill bit widely used in the petroleum and geological fields, and have high hardness, wear resistance and service life. The main mode of breaking rock of the PDC drill bit is to cut the rock, and the PDC drill bit has severe transverse vibration during operation because the PDC drill bit generally has 3-7 blades and tens of composite sheets, and the rock is heterogeneous, so that the efficiency of breaking the rock is weakened. The rotation of drill bit relies on the moment of torsion of drilling rod, and the drill bit itself can not produce autonomous rotation, to cutting rock, all rely on the moment of torsion of drilling rod to realize, because rock is inhomogeneous, and the drill bit itself does not have excitation function or can drive the function of drill bit itself autonomous rotation, then act on the certain moment of torsion of rotation on the drill bit through the drilling rod, the operating time of cutting a certain amount of rock is just very long, cutting efficiency is low, the drill bit itself can not be according to the characteristic change of rock, then in general, just need improve PDC drill bit among the prior art for the PDC drill bit is when boring, can produce excitation and autonomous rotation on the basis of the moment of torsion of original drilling rod, makes the cutting rock effectual, improves the drill bit progress of boring.
Disclosure of Invention
The invention aims to provide a PDC drill bit with a booster rotation excitation function, and aims to solve the technical problems that the PDC drill bit in the prior art lacks excitation and autonomous rotation when drilling rock, and has low rock cutting efficiency.
In order to achieve the above purpose, the invention adopts the following technical scheme: the PDC drill bit with the booster rotary excitation function comprises a drill bit body, a rotary mechanism, a bearing mechanism and an excitation mechanism, wherein PDC cutting teeth are arranged at the top of the drill bit body and used for cutting and drilling geological strata; the rotary mechanism is arranged at the bottom of the drill bit body, the rotary mechanism and the drill bit body are coaxially arranged, and the drill bit body can rotate relative to the rotary mechanism; the bearing mechanism is arranged at the lower end of the rotating mechanism and detachably connected with the rotating mechanism, the bearing mechanism is used for bearing the rotating mechanism, and the bottom of the bearing mechanism is used for connecting a drill rod; the vibration excitation mechanism is circumferentially arranged at the upper end of the bearing mechanism and connected with the drill bit body, and the vibration excitation mechanism is used for generating vibration excitation force and driving the drill bit body to rotate.
As another embodiment of the application, the PDC drill bit with the booster rotary excitation function further comprises a reverse injection mechanism arranged on the drill bit body, wherein the reverse injection mechanism is used for injecting water in a direction opposite to the rotation direction of the drill bit body, and the drill bit body is boosted to rotate by means of the reverse injection mechanism.
As another embodiment of the application, the rotating mechanism comprises a round table and a bearing piece, the round table is arranged upside down, the outer diameter of the upper end surface of the round table is equal to the outer diameter of the bottom of the drill bit body, the outer wall of the round table is provided with an external thread in threaded connection with the bearing mechanism, and the middle part of the round table is provided with a cavity; the bearing piece is the level form setting and is in the round platform upper end and with the round platform is coaxial, is used for supporting the drill bit body is rotatory, the edge of bearing piece is equipped with and is used for spacing the spacing step of drill bit body lateral movement.
As another embodiment of the application, the bearing mechanism comprises a bearing table and a connecting part, wherein the longitudinal section of the bearing table is concave, an internal thread in threaded connection with the round table is arranged in the bearing table, and the upper end of the bearing table is a plane; the connecting portion is located the bearing platform bottom for can dismantle with the drilling rod and be connected, the bearing platform with the threaded connection direction of round platform with the direction of rotation of drill bit body is unanimous.
As another embodiment of the application, the excitation mechanism comprises a circular slide rail, a slide block, a first fixed block, a second fixed block and an excitation assembly, wherein the circular slide rail is arranged on the upper end surface of the bearing table and is coaxially arranged with the bearing table; the plurality of sliding blocks are uniformly distributed and slidingly connected in the circular sliding rail and slide along the circumferential direction of the bearing table, the sliding blocks can be limited in the circular sliding rail, and when the sliding blocks are slidingly connected with the circular sliding rail and the rotating mechanism is rotationally connected with the drill bit body, the drill bit body can freely rotate and can be used for checking the coaxiality of the drill bit body and the rotating mechanism; the plurality of first fixing blocks are arranged on the inner side surface of the sliding block and are vertically distributed; the plurality of second fixing blocks are arranged on the outer wall of the drill bit body and are distributed in an up-down mode, and are staggered with the first fixing blocks; one end of the excitation assembly is hinged with the first fixed block, the other end of the excitation assembly is hinged with the second fixed block and is used for generating excitation force and pushing the second fixed block to move, and the sliding block is limited in the circular sliding rail and can assist in pushing the drill bit body to rotate after the excitation assembly pushes the second fixed block to move.
As another embodiment of the application, the excitation assembly comprises an exciter and a telescopic push rod, wherein one end of the exciter is hinged on the second fixed block, and the other end of the exciter is a free end; one end of the telescopic push rod is fixedly connected with the free end of the vibration exciter, the other end of the telescopic push rod is hinged to the first fixed block, after the sliding block is fixed, the telescopic push rod is used for pushing the second fixed block to move, and after the second fixed block moves, exciting force is generated and boosting pushing the drill bit body to rotate.
As another embodiment of the present application, the reverse jet mechanism includes a nozzle for jetting water, a jet pipe, and a pump body, the jet direction of the nozzle being directed in a direction opposite to the rotation direction of the bit body, the bit body being rotated by means of a reverse thrust of the jet water of the nozzle; the spray pipe sequentially penetrates through the drill bit body, the rotating mechanism and the supporting mechanism, one end of the spray pipe is communicated with the spray nozzle, and the other end of the spray pipe is communicated with a water source; the pump body is arranged on the spray pipe and positioned below the bearing mechanism and is used for pumping water to the nozzle, and the start and stop of the pump body are controlled by a controller arranged on the outer side of the drill rod.
As another embodiment of the present application, the first fixing blocks are all disposed on the inner sides of the sliding blocks, and the first fixing blocks on the plurality of sliding blocks enclose a circle; the second fixed blocks are uniformly distributed along the circumference of the outer wall of the drill bit body, the vibration excitation assembly is not started, the sliding blocks are opposite to each other when the circular sliding rail is fixed, the bearing mechanism can drive the drill bit body to rotate, the first fixed blocks and the second fixed blocks are arranged in one-to-one correspondence, and the distance between the first fixed blocks and the second fixed blocks is the same.
As another embodiment of the application, a plurality of limiting parts are arranged on the outer circumference of the circular sliding rail, and when the sliding block is in sliding connection with the circular sliding rail, the sliding block can be limited to slide by means of the limiting parts, and the number of the limiting parts is larger than that of the sliding blocks.
As another embodiment of the application, the slider is in a long vertical bar structure, a plurality of gauge teeth are vertically arranged on the outer wall of the slider, and the gauge teeth can cut rock and can right the drill bit body when the drill bit body cuts rock.
The PDC drill bit with the booster rotary excitation function has the beneficial effects that: compared with the prior art, the PDC drill bit with the booster rotary excitation function comprises a drill bit body, a rotary mechanism, a bearing mechanism and an excitation mechanism, wherein PDC cutting teeth are arranged at the top of the drill bit body and used for cutting and drilling geological strata; the rotary mechanism is arranged at the bottom of the drill bit body, the rotary mechanism and the drill bit body are coaxially arranged, and the drill bit body can rotate relative to the rotary mechanism; the bearing mechanism is arranged at the lower end of the rotating mechanism and detachably connected with the rotating mechanism, the bearing mechanism is used for bearing the rotating mechanism, and the bottom of the bearing mechanism is used for connecting a drill rod; the vibration excitation mechanism is circumferentially arranged at the upper end of the bearing mechanism and connected with the drill bit body, and is used for generating vibration excitation force and driving the drill bit body to rotate, so that the technical problems of low cutting efficiency caused by lack of vibration excitation and autonomous rotation of the PDC drill bit in the prior art when drilling rock are solved, the PDC drill bit can generate power-assisted rotation when drilling the rock, vibration excitation can be generated through the vibration excitation mechanism, the PDC drill bit is beneficial to inhomogeneous rock cutting, and the cutting progress and efficiency are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a PDC drill bit with a booster rotary excitation function according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view at A-A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 2;
fig. 4 is a perspective view of a slider structure of an excitation mechanism of a PDC drill bit with a booster rotary excitation function according to an embodiment of the present invention.
In the figure: 1. a bit body; 2. a rotation mechanism; 21. round bench; 22. a bearing member; 3. a bearing mechanism; 31. a support table; 32. a connection part; 4. an excitation mechanism; 41. a circular slide rail; 42. a slide block; 43. a first fixed block; 44. a second fixed block; 45. an excitation assembly; 451. a vibration exciter; 452. a telescopic push rod; 46. a limiting piece; 5. a reverse jet mechanism; 51. a nozzle; 52. a spray pipe; 6. gauge teeth.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the 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 for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 4, a PDC bit with a booster rotary excitation function according to the present invention will now be described. The PDC drill bit with the power-assisted rotary excitation function comprises a drill bit body 1, a rotary mechanism 2, a bearing mechanism 3 and an excitation mechanism 4, wherein PDC cutting teeth are arranged at the top of the drill bit body 1 and used for cutting and drilling geological strata; the rotary mechanism 2 is arranged at the bottom of the drill bit body 1, the rotary mechanism 2 and the drill bit body 1 are coaxially arranged, and the drill bit body 1 can rotate relative to the rotary mechanism 2; the bearing mechanism 3 is arranged at the lower end of the rotating mechanism 2 and detachably connected with the rotating mechanism 2, the bearing mechanism 3 is used for bearing the rotating mechanism 2, and the bottom of the bearing mechanism 3 is used for connecting a drill rod; the excitation mechanism 4 is circumferentially arranged at the upper end of the supporting mechanism 3 along the supporting mechanism 3 and is connected with the drill bit body 1, and the excitation mechanism 4 is used for generating excitation force and driving the drill bit body 1 to rotate.
Compared with the prior art, the PDC drill bit with the power-assisted rotary excitation function comprises a drill bit body 1, a rotating mechanism 2, a bearing mechanism 3 and an excitation mechanism 4, wherein PDC cutting teeth are arranged at the top of the drill bit body 1 and used for cutting and drilling geological strata; the rotary mechanism 2 is arranged at the bottom of the drill bit body 1, the rotary mechanism 2 and the drill bit body 1 are coaxially arranged, and the drill bit body 1 can rotate relative to the rotary mechanism 2; the bearing mechanism 3 is arranged at the lower end of the rotating mechanism 2 and detachably connected with the rotating mechanism 2, the bearing mechanism 3 is used for bearing the rotating mechanism 2, and the bottom of the bearing mechanism 3 is used for connecting a drill rod; the vibration excitation mechanism 4 is circumferentially arranged at the upper end of the bearing mechanism 3 along the circumference of the bearing mechanism 3 and is connected with the drill bit body 1, the vibration excitation mechanism 4 is used for generating vibration excitation force and driving the drill bit body 1 to rotate, the technical problems that a PDC drill bit in the prior art lacks vibration excitation and autonomous rotation when drilling rock and has low efficiency in cutting rock are solved, the PDC drill bit can generate power-assisted rotation when drilling rock, vibration excitation can be generated through the vibration excitation mechanism 4, the cutter is beneficial to inhomogeneous rock, and the cutting progress and efficiency are improved.
The PDC drill bit is characterized in that the drill bit body 1 is provided with the chip grooves, the gauge teeth and the jet holes, the PDC drill bit can cut rock or rock strata, the operating principle of the drill bit is not described herein, only the rotary mechanism 2, the bearing mechanism 3 and the vibration excitation mechanism 4 are used for explaining the condition between the drill bit body 1 and a drill rod, the drill bit body 1 can be subjected to power-assisted rotation and generate vibration force on the basis of the rotation torque of the original drill rod, the drill bit body 1 is excited to rotate and excite again on the drill rod, so that the rock excitation is broken, the breaking efficiency and progress of the rock are improved, the drill bit can be suitable for heterogeneous rock cutting and drilling work, the opening and stopping of the vibration excitation mechanism 4 can be realized through manual operation, and the population can meet the cutting and drilling of different types of rock by judging the characteristics of the rock and adjusting and using the vibration excitation mechanism 4 adaptively, so that the cutting efficiency of the drill bit body 1 can be ensured.
As a specific embodiment of the PDC bit with the booster rotary excitation function provided by the present invention, referring to fig. 1 to 4, the PDC bit with the booster rotary excitation function further includes a reverse injection mechanism 5 provided on the bit body 1, wherein the reverse injection mechanism 5 is used for injecting water in a direction opposite to the rotation direction of the bit body 1, and the bit body 1 is boosted to rotate by means of the reverse injection mechanism 5. The reverse spraying mechanism 5 can spray water onto the drill bit body 1, so that the friction between the drill bit body 1 and rock stratum is further lubricated, and drilling is facilitated; on the other hand, the reverse jet mechanism 5 can reversely push the bit body 1 to rotate by the thrust or impact force of water flow, and can drive the bit body 1 to rotate in a small range by cooperating with the excitation mechanism 4, thereby playing a role in assisting the rotation.
As a specific embodiment of the PDC drill bit with the booster rotary excitation function provided by the invention, referring to fig. 1 to 4, the rotary mechanism 2 comprises a round table 21 and a bearing piece 22, the round table 21 is arranged upside down, the outer diameter of the upper end surface of the round table 21 is equal to the outer diameter of the bottom of the drill bit body 1, the outer wall of the round table 21 is provided with an external thread in threaded connection with the bearing mechanism 3, and the middle part of the round table 21 is provided with a cavity; the bearing piece 22 is arranged at the upper end of the round table 21 in a horizontal mode and is coaxial with the round table 21 and used for supporting the drill bit body 1 to rotate, and a limiting step used for limiting the transverse movement of the drill bit body 1 is arranged at the edge of the bearing piece 22. Through the cooperation connection of round platform 21 and bearing piece 22, make bit body 1 can rotate on round platform 21, realized the rotation of bit body 1, can provide rotatory reserve space for the vibration of excitation mechanism 4 excitation bit body 1, after excitation mechanism 4 ejector bit body 1 rotated, bit body 1 can rotate relative round platform 21 promptly.
Specifically, the rotation angle or range of the vibration excitation mechanism 4 for exciting the drill bit body 1 is limited to a certain extent, the rotation angle is very small, the vibration excitation force generated by the rock in the angle range is about 5-10 degrees, and the vibration excitation mechanism can excite the rock to vibrate and provide support or help for cutting and crushing the rock.
As a specific embodiment of the PDC drill bit with the booster rotary excitation function provided by the invention, referring to fig. 1 to 4, the supporting mechanism 3 includes a supporting table 31 and a connecting portion 32, the longitudinal section of the supporting table 31 is concave, an internal thread in threaded connection with the round table 21 is arranged in the supporting table 31, and the upper end of the supporting table 31 is a plane; the connecting portion 32 is disposed at the bottom end of the supporting table 31 and is used for detachably connecting with a drill rod, and the threaded connection direction of the supporting table 31 and the round table 21 is consistent with the rotation direction of the drill bit body 1. The exciting mechanism 4 is arranged on the supporting table 31, a cavity is arranged in the middle of the connecting part 32 and is used for the pipeline of the reverse spraying mechanism 5 to pass through, the supporting mechanism 3 is directly connected with the drill rod and supports the rotating torque, so that the connecting mode between the supporting mechanism 3 and the rotating mechanism 2 is in threaded connection.
In a specific use, an internal thread is provided at the bottom end of the connecting portion 32, and can be connected to a drill rod, and the length of the internal thread is not limited, so that the length of the internal thread can be prolonged in practical application.
As a specific embodiment of the PDC drill bit with the booster rotary excitation function provided by the invention, referring to fig. 1 to 4, the excitation mechanism 4 includes a circular slide rail 41, a slide block 42, a first fixed block 43, a second fixed block 44 and an excitation assembly 45, wherein the circular slide rail 41 is arranged on the upper end surface of the supporting table 31 and is coaxially arranged with the supporting table 31; the plurality of sliding blocks 42 are uniformly distributed and slidingly connected in the circular sliding rail 41, and slide along the circumferential direction of the bearing table 31, the sliding blocks 42 can be limited in the circular sliding rail 41, and when the sliding blocks 42 are slidingly connected with the circular sliding rail 41 and the rotary mechanism 2 is rotationally connected with the drill bit body 1, the drill bit body 1 can freely rotate and can be used for checking the coaxiality of the drill bit body 1 and the rotary mechanism 2; the plurality of first fixing blocks 43 are arranged on the inner side surface of the sliding block 42 in an up-down mode; the second fixing blocks 44 are arranged on the outer wall of the drill bit body 1 in an up-down mode and are staggered with the first fixing blocks 43; one end of the excitation assembly 45 is hinged with the first fixed block 43, the other end of the excitation assembly is hinged with the second fixed block 44, and the excitation assembly is used for generating excitation force and pushing the second fixed block 44 to move, the sliding block 42 is limited in the circular sliding rail 41, and after the excitation assembly 45 pushes the second fixed block 44 to move, the drill bit body 1 can be pushed to rotate in a boosting mode. The distance between the first fixed block 43 and the second fixed block 44 is increased or reduced through the excitation and ejection of the excitation assembly 45, when the position of the first fixed block 43 is fixed, the second fixed block 44 is ejected to move through the operation of the excitation assembly 45, and then the second fixed block 44 ejects the drill bit body 1 to rotate, and the functions of exciting and assisting the rotation of the drill bit body 1 are realized through the simultaneous actions of a plurality of excitation mechanisms 4.
Specifically, the first fixing blocks 43 and the second fixing blocks 44 are arranged in three rows in the up-down form, one first fixing block 43 corresponds to one excitation assembly 45, one excitation assembly 45 corresponds to one second fixing block 44, the three are in one group, and more than three groups are arranged on the outer circumference of the drill bit body 1.
As a specific embodiment of the PDC drill bit with the booster rotary excitation function provided by the present invention, referring to fig. 1 to 4, the excitation assembly 45 includes an exciter 451 and a telescopic push rod 452, wherein one end of the exciter 451 is hinged to the second fixed block 44, and the other end is a free end; one end of the telescopic push rod 452 is fixedly connected with the free end of the vibration exciter 451, the other end of the telescopic push rod 452 is hinged with the first fixed block 43, after the sliding block 42 is fixed, the telescopic push rod 452 is used for pushing the second fixed block 44 to move, and after the second fixed block 44 moves, exciting force is generated and boosting pushing the drill bit body 1 to rotate. The vibration exciter 451 generates exciting force or vibration, and the bit body 1 can be rotated by cooperating with pushing of the telescopic push rod 452, and the bit body 1 receives the following power: the pushing force of the telescopic pushing rod 452, the exciting force of the exciter 451 and the rotation torque of the drill rod, thereby cutting and drilling of heterogeneous rock can be realized.
Specifically, the telescopic pushing rod 452 may be an electric telescopic pushing rod 452, which can generate a pushing force and can be controlled. The vibration exciter 451 is a small-sized vibration exciter 451, and can vibrate, and through the cooperation action with the telescopic push rod 452, the second fixed block 44 is pushed to move in the vibration process, so that the characteristics of vibration excitation are realized, the rock is cut and broken under the condition of being vibrated, and the cutting efficiency of the drill bit body 1 is improved.
As a specific embodiment of the PDC drill bit with the booster rotary excitation function provided by the present invention, referring to fig. 1 to 4, the reverse injection mechanism 5 includes a nozzle 51, a nozzle pipe 52 and a pump body, the injection direction of the nozzle 51 faces the direction opposite to the rotation direction of the drill bit body 1, the nozzle 51 is used for injecting water, and the drill bit body 1 rotates by means of the reverse thrust of the water injection of the nozzle 51; the spray pipe 52 sequentially penetrates through the drill bit body 1, the rotating mechanism 2 and the bearing mechanism 3, one end of the spray pipe is communicated with the spray nozzle 51, and the other end of the spray pipe is communicated with a water source; the pump body is arranged on the spray pipe 52 and is positioned below the bearing mechanism 3 and used for pumping water to the nozzle 51, and the start and stop of the pump body are controlled by a controller arranged on the outer side of the drill rod. The high-pressure water flow sprayed out by the nozzle 51 can provide power-assisted rotation for the drill bit body 1, so that the drill bit body 1 can rotate again on the basis of the original rotation torque, and the function of power-assisted rotation of the drill bit body 1 is realized. The number of the reverse spraying mechanisms 5 is plural and all arranged on the outer circumference of the drill bit body 1. The pressure or flow rate of the pumping water can be controlled, and thus the magnitude of the rotational driving force to the bit body 1 can be controlled.
Specifically, the inner diameter of the jet orifice of the nozzle 51 is 6-12mm, and the nozzle 51 is made of cemented carbide material.
As a specific embodiment of the PDC drill bit with the booster rotary excitation function provided by the present invention, referring to fig. 1 to 4, the first fixing blocks 43 are all disposed on the inner side surfaces of the sliding blocks 42, and the first fixing blocks 43 on the sliding blocks 42 enclose a circle; the second fixing blocks 44 are uniformly distributed along the circumferential direction of the outer wall of the drill bit body 1, when the excitation assembly 45 is not started and the sliding block 42 is fixed relative to the circular sliding rail 41, the bearing mechanism 3 can drive the drill bit body 1 to rotate, and the first fixing blocks 43 and the second fixing blocks 44 are arranged in one-to-one correspondence and have the same interval. The first fixing block 43 and the second fixing block 44 are all made of cemented carbide.
As a specific embodiment of the PDC drill bit with the booster rotary excitation function provided by the present invention, referring to fig. 1 to 4, a plurality of limiting members 46 are disposed on the outer circumference of the circular sliding rail 41, and when the sliding block 42 slides in the circular sliding rail 41, the sliding block 42 can be limited by means of the limiting members 46, and the number of the limiting members 46 is greater than that of the sliding block 42. Through pushing the limiting piece 46, the sliding block 42 can be limited and fixed on the circular sliding rail 41, the supporting mechanism 3 can drive the excitation mechanism 4, the excitation mechanism 4 excites the drill bit body 1, and meanwhile, the drill bit body 1 rotates on the rotating mechanism 2.
Specifically, the limiting member 46 is a jackscrew, and the jackscrew passes through the outer wall of the circular slide rail 41 and can push the outer side of the sliding block 42, so that the sliding block 42 is limited in the circular slide rail 41.
As a specific embodiment of the PDC drill bit with the booster rotary excitation function provided by the invention, referring to fig. 1 to 4, the sliding block 42 has a long vertical bar structure, and a plurality of gauge teeth 6 are vertically arranged on the outer wall of the sliding block 42, and the gauge teeth 6 can cut rock and can straighten the drill bit body 1 when the drill bit body 1 cuts rock. The sliding connection end of the sliding block 42 and the circular sliding rail 41 is arc-shaped and is matched with the arc bending radian of the circular sliding rail 41, the upper end of the sliding block 42 is of a vertical strip-shaped structure, and the sliding block 42 is of an inverted T-shaped structure with an arc bending as a whole. The drill bit body 1 can assist in protecting the excitation mechanism 4 from damage through the gauge teeth 6 in the drilling process, and meanwhile, the drill bit body 1 is also beneficial to resetting and dislocation prevention.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. PDC drill bit with helping hand rotatory excitation function, characterized by, include:
the PDC cutting teeth are arranged at the top of the drill bit body and are used for cutting and drilling geological strata;
the rotary mechanism is arranged at the bottom of the drill bit body, is coaxially arranged with the drill bit body, and can rotate relative to the rotary mechanism;
the bearing mechanism is arranged at the lower end of the rotating mechanism and detachably connected with the rotating mechanism, the bearing mechanism is used for bearing the rotating mechanism, and the bottom of the bearing mechanism is used for connecting a drill rod; and
the vibration excitation mechanism is arranged at the upper end of the bearing mechanism along the circumferential direction of the bearing mechanism, is connected with the drill bit body and is used for generating vibration force and driving the drill bit body to rotate;
the rotation mechanism includes:
the round table is arranged upside down, the outer diameter of the upper end surface of the round table is equal to the outer diameter of the bottom of the drill bit body, the outer wall of the round table is provided with external threads connected with the supporting mechanism in a threaded manner, and the middle of the round table is provided with a cavity; and
the bearing piece is horizontally arranged at the upper end of the round table and is coaxial with the round table and used for supporting the drill bit body to rotate, and a limiting step used for limiting the transverse movement of the drill bit body is arranged at the edge of the bearing piece;
the bearing mechanism includes:
the longitudinal section of the bearing table is concave, an internal thread in threaded connection with the round table is arranged in the bearing table, and the upper end of the bearing table is a plane; and
the connecting part is arranged at the bottom end of the bearing table and is used for being detachably connected with the drill rod, and the threaded connection direction of the bearing table and the round table is consistent with the rotation direction of the drill bit body;
the excitation mechanism includes:
the round sliding rail is arranged on the upper end surface of the bearing table and is coaxially arranged with the bearing table;
the plurality of sliding blocks are uniformly distributed and slidingly connected in the circular sliding rail and slide along the circumferential direction of the bearing table, the sliding blocks are limited in the circular sliding rail, and when the sliding blocks are slidingly connected with the circular sliding rail and the rotating mechanism is rotationally connected with the drill bit body, the drill bit body can freely rotate and is used for checking the coaxiality of the drill bit body and the rotating mechanism;
the plurality of first fixing blocks are arranged on the inner side surface of the sliding block and are vertically distributed;
the plurality of second fixing blocks are arranged on the outer wall of the drill bit body and are distributed in an up-down mode, and are staggered with the first fixing blocks; and
one end of the shock excitation assembly is hinged with the first fixed block, the other end of the shock excitation assembly is hinged with the second fixed block, the shock excitation assembly is used for generating shock excitation force and pushing the second fixed block to move, and the sliding block is limited in the circular sliding rail, and after the shock excitation assembly pushes the second fixed block to move, the drill bit body is pushed to rotate by aid of assistance.
2. The PDC bit with assisted rotary excitation function of claim 1 further comprising a reverse jet mechanism on the bit body for jetting water in a direction opposite to the bit body rotation direction, the bit body being assisted in rotation by the reverse jet mechanism.
3. The PDC bit with booster rotary excitation of claim 1 wherein the excitation assembly comprises:
one end of the vibration exciter is hinged to the second fixed block, and the other end of the vibration exciter is a free end; and
and one end of the telescopic push rod is fixedly connected with the free end of the vibration exciter, the other end of the telescopic push rod is hinged with the first fixed block, after the sliding block is fixed, the telescopic push rod is used for pushing the second fixed block to move, and after the second fixed block moves, exciting force is generated and boosting pushing the drill bit body to rotate.
4. The PDC bit with assisted rotary excitation of claim 2 wherein the reverse jet mechanism comprises:
a nozzle whose injection direction is directed in a direction opposite to a rotation direction of the bit body, the nozzle being for injecting water, the bit body being rotated by a reverse thrust of the nozzle injecting water;
the spray pipe sequentially penetrates through the drill bit body, the rotating mechanism and the supporting mechanism, one end of the spray pipe is communicated with the spray nozzle, and the other end of the spray pipe is communicated with a water source; and
the pump body is arranged on the spray pipe and positioned below the bearing mechanism and is used for pumping water to the nozzle, and the start and stop of the pump body are controlled by a controller arranged on the outer side of the drill rod.
5. The PDC drill bit with the booster rotary excitation function of claim 1 wherein the first fixed blocks are all arranged on the inner side surfaces of the sliding blocks, and the first fixed blocks on a plurality of sliding blocks are round; the second fixed blocks are uniformly distributed along the circumference of the outer wall of the drill bit body, the vibration excitation assembly is not started, the sliding blocks are opposite to each other when the circular sliding rail is fixed, the bearing mechanism drives the drill bit body to rotate, the first fixed blocks and the second fixed blocks are arranged in one-to-one correspondence, and the distance between the first fixed blocks and the second fixed blocks is the same.
6. The PDC drill bit with the power-assisted rotary excitation function according to claim 1, wherein a plurality of limiting pieces are arranged on the outer circumference of the circular sliding rail, and when the sliding blocks are in sliding connection with the circular sliding rail, the sliding blocks are limited to slide by means of the limiting pieces, and the number of the limiting pieces is larger than that of the sliding blocks.
7. The PDC drill bit with booster rotary excitation function of claim 1 wherein the slider is in a long vertical bar configuration, a plurality of gage teeth are vertically disposed on an outer wall of the slider, and the gage teeth cut rock and centralize the bit body when the bit body cuts rock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042787.XA CN112177534B (en) | 2020-09-28 | 2020-09-28 | PDC drill bit with booster rotary excitation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011042787.XA CN112177534B (en) | 2020-09-28 | 2020-09-28 | PDC drill bit with booster rotary excitation function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112177534A CN112177534A (en) | 2021-01-05 |
| CN112177534B true CN112177534B (en) | 2023-05-02 |
Family
ID=73945422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011042787.XA Active CN112177534B (en) | 2020-09-28 | 2020-09-28 | PDC drill bit with booster rotary excitation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112177534B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202467656U (en) * | 2012-01-20 | 2012-10-03 | 重庆科垒机械有限公司 | Rock-entering excitation device for rotary drilling rig |
| CN105649537B (en) * | 2016-01-22 | 2019-05-14 | 西南石油大学 | Rotation self-advancing type mixing jet drill bit with cutting rib |
| CN109441385B (en) * | 2018-12-04 | 2024-03-26 | 湖北三峡职业技术学院 | Exciting device for portable drilling |
-
2020
- 2020-09-28 CN CN202011042787.XA patent/CN112177534B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112177534A (en) | 2021-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10787886B2 (en) | Auxiliary feeding device for flexible pipe of radial horizontal well | |
| US4535853A (en) | Drill bit for jet assisted rotary drilling | |
| EP1957751B1 (en) | Downhole hydraulic pipe cutter | |
| WO2016150113A1 (en) | Positive displacement motor drill and rock breaking well drilling method therefor | |
| JP2007527962A5 (en) | ||
| CN103291213B (en) | Water pressure torsional impact device for well drilling | |
| CN105298421B (en) | Continuous pipe abradant jet speed limit rotary cutting tool | |
| CN106988773A (en) | Reduce the plant anchor pole method that suspension roof support slides unstability | |
| CN111350463A (en) | Drill bit suitable for stronger rock is equipped with high strength nozzle | |
| CN102373883A (en) | Diving rock inserting drill rig | |
| CN112177534B (en) | PDC drill bit with booster rotary excitation function | |
| CN104453710A (en) | Drilling equipment for coal seam large-diameter boring construction | |
| CN212337207U (en) | All-metal hydraulic oscillator | |
| CN112483006B (en) | Rock threaded hole drilling bit of rotary drilling rig, and use method and application thereof | |
| CN210195668U (en) | Hole expanding drill bit for deep well hole forming | |
| CN217872786U (en) | Multi-directional-groove cutting device in top plate drilling | |
| CN112177539B (en) | Drill bit with hydraulic fracturing function | |
| JP5800587B2 (en) | Drilling device | |
| CN109577887B (en) | Oscillating horizontal well flushing tool | |
| CN102513645A (en) | Deep water casing cutting device based on electric arc cutting | |
| CN110735597B (en) | Hydraulic drive drill bit impactor | |
| CA3050791C (en) | Highly-efficient composite drill bit for formation difficult to drill in deep well | |
| CN218624068U (en) | Mine rock drill down-the-hole mechanism | |
| CN114753770B (en) | Porous phase change rotary cutting type tunneling drill bit and method | |
| JP2016196781A (en) | Method to open hole on sheath tube used in investigation on precast concrete grout filling and re-injection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |