CN111485819A - Vibration impact drilling speed-increasing tool - Google Patents
Vibration impact drilling speed-increasing tool Download PDFInfo
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- CN111485819A CN111485819A CN201910084187.0A CN201910084187A CN111485819A CN 111485819 A CN111485819 A CN 111485819A CN 201910084187 A CN201910084187 A CN 201910084187A CN 111485819 A CN111485819 A CN 111485819A
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- 238000005553 drilling Methods 0.000 title claims abstract description 40
- 230000001133 acceleration Effects 0.000 claims abstract description 16
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 10
- 230000000737 periodic effect Effects 0.000 claims abstract description 7
- 230000033001 locomotion Effects 0.000 claims description 12
- 238000009527 percussion Methods 0.000 claims description 12
- 210000004907 gland Anatomy 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 230000009699 differential effect Effects 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims 2
- 210000002445 nipple Anatomy 0.000 abstract description 7
- 239000011435 rock Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
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- 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 vibration impact drilling acceleration tool, which comprises: the device comprises a shell, a first pipe nipple and a second pipe nipple, wherein one end of the shell is fixedly provided with the first pipe nipple, and the other end of the shell is connected with the second pipe nipple; a reciprocating impact device disposed within the housing, comprising: the jet nozzle is fixedly arranged in the first short section; the torsion rotary impact mechanism is arranged at the downstream of the jet flow nozzle and comprises a vibration shaft, an impact hammer sleeved on the vibration shaft and an impact hammer seat arranged between the impact hammer and the shell and fixedly connected with the second short section, and the impact hammer is constructed to swing within a certain range in the circumferential direction of the impact hammer seat; the vibration shaft is constructed to move upwards along the shaft, drive the impact hammer to rotate and impact the impact hammer seat to generate torsional impact, and move downwards under the action of jet fluid to generate axial impact after reaching an upper limit position, so that periodic axial and torsional impact loads are formed on the drill bit.
Description
Technical Field
The invention relates to the technical field of drilling tools in oil exploitation engineering, in particular to a vibration impact drilling speed-up tool.
Background
With the continuous development of oil drilling technology, in the drilling engineering, many drilling tools with different functions are developed to meet different working requirements. With the continuous development of technology, the performance of the well drilling tool in the prior art is greatly improved.
In the prior art, in order to improve the rock breaking efficiency of hard rock formations of deep wells and ultra-deep wells, an axial and torsional combined impact drilling technology is generally adopted. At present, the two-way impact technology mainly comprises a power assembly type and a hydraulic valve type according to different impact generation modes. The power assembly type principle is that a screw or a turbine assembly drives an impact hammer to rotate, and the rotary motion of the impact hammer is converted into periodic axial and torsional impact action through a slope boss. The principle of the hydraulic valve is that the impact hammer is driven to generate axial and torsional impact actions through the switching of the opening and closing of the overflowing channel.
However, under special conditions such as high temperature and high pressure in deep wells and ultra-deep wells, the stability of power components such as screws and turbines is poor. The hydraulic valve has a complex structure, and has more related pore channels, so that solid-phase particles of drilling fluid are easy to block a flow channel to cause tool failure. In addition, in deep well hard rock formations and highly abrasive formations, the drilling tool in the prior art has a low rate of penetration and the bottom hole has a stick-slip vibration phenomenon, resulting in low construction efficiency of the drilling tool and easy damage of the drill bit.
Disclosure of Invention
In view of the above-mentioned technical problems, the present invention is directed to a vibration impact drilling acceleration tool capable of providing periodic axial and torsional impact loads, thereby significantly improving the volume of rock breaking and the cutting efficiency of a drilling tool using the acceleration tool. Meanwhile, the vibration impact drilling speed-up tool can effectively reduce stick-slip vibration of a bottom drilling tool caused by insufficient torque, reduce impact of underground axial vibration on a drill bit, avoid damage of the drill bit and failure of the drilling tool, and remarkably prolong the service life of the drill bit.
To this end, according to the invention, a vibratory percussion drilling acceleration tool is proposed, comprising: the drill bit comprises a cylindrical shell, wherein a first short section used for connecting a drill string is fixed at one end of the shell, and a second short section used for connecting a drill bit is connected at the other end of the shell; a reciprocating impact device disposed within the housing, the reciprocating impact device comprising: the jet nozzle is fixedly arranged in the first short section; the torsion rotary impact mechanism is arranged at the downstream of the jet flow nozzle and comprises a vibration shaft, an impact hammer sleeved on the vibration shaft and an impact hammer seat arranged between the impact hammer and the shell and fixedly connected with the second short section, and the impact hammer is constructed to swing within a certain range in the circumferential direction of the impact hammer seat; wherein be equipped with the spherical recess of a plurality of equipartitions in circumference on the vibration axle surface, install the ball in the spherical recess be equipped with on the internal surface of jump bit a plurality of with the helical slide that the ball corresponds, the vibration axle is constructed and to be able to be in fluid pressure differential effect that jet nozzle's injection port department formed goes upward under, and the ball with the helical slide's effect drives down the jump bit is rotatory and striking the hammer seat and produce torsional impact, and can be down and produce axial impact under the effect of injection fluid after reaching upper limit position, thereby it is right the drill bit forms periodic axial and torsional impact load.
In a preferred embodiment, the vibration shaft is configured as a hollow cylinder and is provided at one end with an annular radial projection having an outer diameter set to be equal to an inner diameter of the housing.
In a preferred embodiment, the other end of the vibration shaft is closed, and a plurality of circumferentially uniformly distributed lateral through holes are formed in the side wall close to the closed end, and the lateral through holes are closed when the vibration shaft is at an upper limit position and opened when the vibration shaft is at a lower limit position.
In a preferred embodiment, a step is provided on the vibration shaft axially inside the radial protrusion, a first gland is provided between one end surface of the impact hammer and the step, and a second gland is provided between the other end surface of the impact hammer and the impact hammer seat.
In a preferred embodiment, two sector grooves extending partially in the circumferential direction are radially and symmetrically provided on the inner wall of one end of the impact hammer seat, and the extension length of the sector grooves in the axial direction is set to be equal to the length of the impact hammer.
In a preferred embodiment, two fan-shaped protrusions are radially and symmetrically arranged on the outer surface of the impact hammer, the extension angle of each fan-shaped protrusion in the circumferential direction is smaller than that of each fan-shaped groove, and the fan-shaped protrusions are correspondingly installed in the fan-shaped grooves, so that the impact hammer impacts the impact hammer seat under the action of circumferential swinging to generate torsional impact load.
In a preferred embodiment, the other end of the impact hammer seat is closed and provided with a boss extending along the central axis for receiving the axial impact of the impact hammer.
In a preferred embodiment, a plurality of flow passages which are uniformly distributed in the circumferential direction and extend along the axial direction are arranged at the closed end of the impact hammer seat, and the flow passages are configured to communicate the lateral through hole and the drill bit at the position where the vibration shaft is at the lower limit position.
In a preferred embodiment, the jet nozzle has an inner diameter that decreases from one end to the other end and an outer diameter that is a variable diameter step.
In a preferred embodiment, the reciprocating impact device further comprises a motion limiting mechanism arranged downstream of the reciprocating impact device, and the motion limiting mechanism comprises: the limiting snap ring is arranged between the impact hammer seat and the second short section; the limiting clamping ring radially extends into the annular groove and can axially move in the annular groove, so that the axial movement range of the reciprocating impact device is limited.
Drawings
The invention will now be described with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of a vibratory percussion drill acceleration tool for drilling a well according to the present invention.
Fig. 2 is a cross-sectional view taken along section B-B of fig. 1.
Fig. 3 shows a perspective view of a vibration shaft in the vibration percussion drilling acceleration tool shown in fig. 1.
Fig. 4 shows a three-dimensional structure of the impact hammer in the vibration impact drilling acceleration tool shown in fig. 1.
Fig. 5 shows a perspective view of an impact hammer holder in the vibration impact drilling acceleration tool shown in fig. 1.
Fig. 6 is a cross-sectional view taken along section a-a in fig. 1.
In the present application, the drawings are all schematic and are used only for illustrating the principles of the invention and are not drawn to scale.
Detailed Description
The invention is described below with reference to the accompanying drawings.
It is noted that the end of the vibratory percussion drilling acceleration tool lowered into the wellbore that is located away from the wellhead (the right end in fig. 1) is defined as the "lower end" or the like, while the end located close to the wellhead (the left end in fig. 1) is defined as the "upper end" or the like.
FIG. 1 is a cross-sectional view of a vibratory percussion drill acceleration tool 100 for drilling a well according to the present invention. As shown in fig. 1, the vibration percussion drilling acceleration tool 100 includes a cylindrical housing 110, and the upper end of the housing 110 is configured as a negative taper coupling buckle. A first short section 120 is fixedly connected to the upper end of the housing 110, and the lower end of the first short section 120 is configured into a positive taper connecting buckle which can be connected with the negative taper connecting buckle at the upper end of the housing 110 in a matching manner. The first sub 120 is for connection to a drill string. In one embodiment, housing 110 is threadably secured to first sub 120. In order to ensure the sealing property of the connection between the housing 110 and the first sub 120, a sealing member 111 is provided between the positive taper connector and the negative taper connector. The structure of the housing 110 and the first short section 120 is simple and convenient to install.
In addition, a second short joint 122 is connected to the lower end of the housing 110, and the second short joint 122 is used for connecting with a drill bit. As shown in fig. 1 and 2, the outer diameter of the second short section 122 is set equal to the inner diameter of the housing 110. One end (the right end in fig. 1) of the second short section 122 is provided with a plurality of protrusions 123 extending radially outwards and having a sector-shaped cross section, and the protrusions 123 are evenly distributed at intervals in the circumferential direction. Meanwhile, a lower end (right end in fig. 1) portion of the housing 110 is provided with a plurality of fan-shaped grooves 113 extending partially axially from the end and having a cross section. The protrusion 123 is correspondingly installed in the groove 113, and the extension of the groove 113 in the circumferential direction is larger than the extension of the protrusion 123 in the circumferential direction. Therefore, the second short section 122 is in movable connection with the housing 110, and the second short section 122 can rotate in a certain circumferential range between the housing 110. This kind of connection structure of second nipple joint 122 and casing 110 can effectively reduce the influence of drill bit vibrations to vibration impact drilling speed-up instrument 100, and it can provide the cushioning effect power to reduce the impact of drill bit, avoid vibration impact drilling speed-up instrument 100 to receive the damage.
In accordance with the present invention, the vibratory percussion drilling acceleration tool 100 further includes a reciprocating impact device 130 disposed within the housing 110, the reciprocating impact device 130 being disposed downstream of the jet nozzle 140. As shown in fig. 1, the reciprocating impacting device 130 includes a jet nozzle 140 fixedly mounted at the entrance of the first nipple 120. In one embodiment, jet nozzle 140 is fixedly mounted within first nipple 120 by threading. The jet nozzle 140 has an inner diameter that decreases from one end to the other end, and an outer diameter that is a variable diameter step. The structure of the jet nozzle 140 can ensure that the jet nozzle is stably and effectively installed in the first short section 120, and the fluid can form high-speed jet after flowing through the nozzle of the jet nozzle 140.
As shown in fig. 1, the reciprocating impact device 130 further includes a torsional rotary impact mechanism 150 disposed downstream of the jet nozzle 140, the torsional rotary impact mechanism 150 including a vibration shaft 160. The vibratory shaft 160 is configured to move axially, which can move upstream under the pressure differential of the fluid created at the jet opening of the jet nozzle 130. A substantially sleeve-shaped impact hammer 170 is fitted over the outer surface of the vibration shaft 160, and the impact hammer 170 is configured to generate circumferential impact by the axial movement of the vibration shaft 160. The rotary impact mechanism 150 further includes an impact hammer seat 180, the impact hammer seat 180 is disposed between the impact hammer 170 and the housing 110, and the impact hammer seat 180 is fixedly connected to the second short section 122. The impact hammer 170 is installed in cooperation with the impact hammer seat 180, and the impact hammer 170 can swing within a certain range in the circumferential direction of the impact hammer seat 180, so that circumferential torsional impact generated by the impact hammer 170 is transmitted to the impact hammer seat 180 and then to a drill bit, and the construction efficiency of the drill bit is improved.
As shown in fig. 1 and 3, the vibration shaft 160 is configured as a hollow cylinder. One end (left end in fig. 1) of the vibration shaft 160 is provided with an annular radial protrusion 161, and the outer diameter of the radial protrusion 161 is set to be equal to the inner diameter of the casing 110. Preferably, a clearance fit is formed between the outer surface of the radial projection 161 and the inner wall of the housing 110. The other end (right end in fig. 1) of the vibration shaft 160 is configured to be closed, and a plurality of circumferentially-distributed lateral through-holes 162 are provided on a sidewall near the closed end. In the embodiment shown in fig. 3, four direction-finding through holes 162 are provided on the side wall of the vibration shaft 160. The lateral through hole 162 is configured to be closed at an upper limit position and to be opened at a lower limit position in the axial direction of the vibration shaft 160.
According to the present invention, a plurality of spherical recesses 163 uniformly distributed in the circumferential direction are provided outside the sidewall of the vibration shaft 160. A spherical recess 163 is provided at a position upstream of the lateral through-hole 162, and a ball 164 is mounted in the spherical recess 163. The function of the balls 164 will be described in detail below.
Fig. 4 shows a three-dimensional structure of the impact hammer 170. As shown in fig. 4, the impact hammer 170 includes a cylindrical body portion 171. A plurality of spiral chutes 172 are provided on an inner wall surface of the body portion 171, and the plurality of spiral chutes 172 are uniformly distributed in the circumferential direction and extend to one end surface of the body portion 171 in the circumferential direction. In the installed state, the balls 164 on the outer surface of the vibration shaft 160 are correspondingly installed in the inner slide 172 of the hammer 170. Accordingly, the axial movement of the vibration shaft 160 can rotate the impact hammer 170 by the balls 164 and the spiral slideway 172 to generate circumferential impact. Meanwhile, the vibration shaft 160 can move downward under the action of the injection fluid after reaching the upper limit position to generate axial impact, so that periodic axial and torsional impact loads are formed on the drill bit through the impact hammer seat 180.
Fig. 5 shows a perspective structure of the impact hammer holder 180. As shown in fig. 1 and 5, the impact hammer holder 180 is formed in a substantially cylindrical shape, and an upper portion thereof is mounted between the impact hammer 170 and the housing 110. The outer part of the lower end of the impact hammer seat 180 is provided with a step. In one embodiment, a thread is provided on the outer circumferential surface of the step. The impact hammer mount 180 is fixedly mounted to the second sub 122 by a threaded connection.
In the present embodiment, two fan-shaped grooves 181 are provided on the inner wall of the upper end (left end in fig. 1) portion of the impact hammer holder 180, and the two fan-shaped grooves 181 are radially symmetrically provided and extend partially in the circumferential direction. The sector groove 181 is provided to extend in the axial direction by the same length as the axial length of the hammer 170. As shown in fig. 6, two fan-shaped protrusions 174 are radially and symmetrically provided on the outer surface of the hammer striker 170, and the extension angle of the fan-shaped protrusions 174 in the circumferential direction is smaller than that of the fan-shaped recesses 181 in the circumferential direction. The scalloped protrusions 174 on the hammer striker 170 fit into the scalloped recesses 181 of the hammer striker mount 180. Therefore, the circumferential impact generated by the impact hammer 170 can impact the impact hammer seat 180 under the action of circumferential oscillation, so that a torsional impact load is generated and transmitted to the drill bit, and the construction efficiency of the drill bit is improved.
In the present embodiment, when the vibration shaft 160 is located at the lower limit position, the fan-shaped protrusion 174 of the impact hammer 170 is not in contact with the fan-shaped recess 181 of the impact hammer holder 180, and when the vibration shaft 160 is located at the upper limit position, the fan-shaped protrusion 174 strikes the fan-shaped recess 181 to generate a torsional impact. Thus, the torsional impact is a clockwise one-way impact action.
According to the present invention, the lower end (right end in fig. 1) of the impact hammer holder 180 is provided to be closed, and is provided with a boss 184 extending along the central axis for receiving the axial impact of the impact hammer 170. In addition, a plurality of flow channels 186 which are uniformly distributed in the circumferential direction and extend in the axial direction are provided at the closed end of the impact hammer seat 180. When the vibration shaft 170 is at the lower limit position, the lateral through-hole 162 communicates with the bit through the flow passage 186, so that the fluid in the vibration shaft 170 flows into the bit through the flow passage 186.
A first gland 176 is provided between the vibration shaft 160 and the impact hammer 170, and a second gland 178 is provided between the impact hammer 170 and the impact hammer holder 180. A step is provided on the vibration shaft 160 axially inside the radial projection 161, and a first gland 176 is provided between one end surface of the hammer 170 and the step. The first and second glands 176 and 178 effectively ensure sealability between the impact hammer 170 and the vibration shaft 160 and stability of the impact hammer 170 in the axial position.
According to the invention, the vibration impact drilling speed-up tool 100 further comprises a movement limiting mechanism 190 arranged at the downstream of the reciprocating impact device 130, wherein the movement limiting mechanism 190 comprises a limiting snap ring 191, and the limiting snap ring 191 is fixed between the axial end face of the step of the impact hammer seat 180 and the axial end face of the second short section 122. In one embodiment, the retaining snap ring 191 is configured as a split piece. Meanwhile, an annular groove 112 is formed on the inner wall of the housing 110, and a retainer snap ring 191 radially extends into the annular groove 112 and is capable of axially moving within the annular groove 112, thereby defining a range of movement of the reciprocating impact device 130 in the axial direction. When the drill bit is not in contact with the well bottom or is in contact with the well bottom but is stressed less, under the action of the drilling fluid pressure and the self gravity, the reciprocating impact device 130 moves downwards and is limited at the lower limit position of the annular groove 112 under the action of the motion limiting mechanism 190, and when the drill bit bears a certain bit pressure, the reciprocating impact device 130 is limited at the upper limit position of the annular groove 112.
In actual operation, the fluid forms a high velocity jet after flowing through the jet nozzle 140, thereby creating a localized low pressure around the outlet of the jet nozzle 140, and the vibratory shaft 160 travels upward under the effect of the fluid pressure differential. Meanwhile, the vibration shaft 160 drives the impact hammer 170 to rotate and impact the impact hammer seat 180 through the matching of the balls 164 and the spiral slideway 172 to form torsional impact until the vibration shaft moves to the upper limit position, the lateral through hole 162 of the vibration shaft 160 is blocked, the water hammer effect formed by the jet nozzle 140 forces the vibration shaft 160 to move downwards until the vibration shaft moves to the lower limit position, the vibration shaft 160 impacts the boss 184 of the impact hammer seat 180 to generate axial impact force, and the torsional impact does not occur at this time. Therefore, periodical axial and torsional impact loads are formed, so that the periodical axial and torsional loads are applied to the drill bit, and the construction efficiency of the drill bit is greatly improved.
The vibration impact drilling acceleration tool 100 for drilling can provide periodic axial and torsional impact loads for a drill bit, so that the mechanical rotating speed of the drilling tool is increased, and the rock breaking volume and the cutting efficiency of the drill bit are obviously improved. In addition, the vibration impact drilling speed-up tool 100 can effectively reduce stick-slip vibration of the bottom drilling tool caused by insufficient torque, reduce impact of downhole axial vibration on the drill bit, avoid damage of the drill bit and failure of the drilling tool, and remarkably prolong the service life of the drill bit.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A vibratory percussion drilling acceleration tool, comprising:
the drill bit comprises a cylindrical shell (110), wherein a first short joint (120) used for connecting a drill string is fixed at one end of the shell, and a second short joint (122) used for connecting a drill bit is connected at the other end of the shell;
a reciprocating ram (130) disposed within the housing, the reciprocating ram comprising:
a jet nozzle (140) fixedly mounted within the first sub;
a torsional rotary impact mechanism (150) arranged at the downstream of the jet nozzle, and comprising a vibration shaft (160), an impact hammer (170) sleeved on the vibration shaft, and an impact hammer seat (180) arranged between the impact hammer and the shell and fixedly connected with the second short section, wherein the impact hammer is configured to swing within a certain range in the circumferential direction of the impact hammer seat;
wherein be equipped with a plurality of spherical recess (163) of equipartition in circumference on the vibration axle surface, install ball (164) in the spherical recess be equipped with on the internal surface of jump bit a plurality of with helical slide (172) that the ball corresponds, the vibration axle is constructed and to be able to go upward under the fluid pressure differential effect that jet nozzle's jet orifice department formed, and the ball with drive under helical slide's the effect the jump bit is rotatory and striking the hammer seat and produce torsional impact, and can be down and produce axial impact under the effect of injection fluid after reaching upper limit position, thus it is right the drill bit forms periodic axial and torsional impact load.
2. The tool according to claim 1, wherein the vibration shaft is configured as a hollow cylinder and is provided at one end with an annular radial protrusion (161) having an outer diameter set to be equal to an inner diameter of the housing.
3. The tool according to claim 2, wherein the other end of the vibration shaft is configured to be closed, and a plurality of circumferentially distributed lateral through holes (162) are provided on a sidewall near the closed end, the lateral through holes being configured to be closed at an upper limit position of the vibration shaft and to be opened at a lower limit position thereof.
4. A tool according to claim 2 or 3, wherein a step is provided axially inside the vibration shaft in the radial projection, a first gland (176) is provided between one end face of the percussion hammer and the step, and a second gland (178) is provided between the other end face of the percussion hammer and the percussion hammer seat.
5. The vibration percussion drilling acceleration tool of claim 3, characterized in that two fan-shaped grooves (181) partially extending in the circumferential direction are provided radially symmetrically on the inner wall of one end of the hammer holder, and the extension length of the fan-shaped grooves in the axial direction is set to be equal to the length of the hammer.
6. The tool according to claim 5, wherein two fan-shaped protrusions (174) are symmetrically arranged on the outer surface of the impact hammer in the radial direction, the extension angle of the fan-shaped protrusions in the circumferential direction is smaller than that of the fan-shaped grooves, and the fan-shaped protrusions are correspondingly installed in the fan-shaped grooves, so that the impact hammer impacts the impact hammer seat under the action of circumferential oscillation to generate torsional impact load.
7. The tool according to claim 6, wherein the other end of the hammer block is closed and provided with a boss (184) extending along the central axis for receiving the axial impact of the hammer.
8. The tool according to claim 7, wherein a plurality of circumferentially uniformly and axially extending flow passages (186) are provided at the closed end of the hammer carrier, the flow passages being configured to communicate the lateral through-hole with the drill bit at a lower limit position of the vibration axis.
9. The tool of claim 1, wherein the jet nozzle has an inner diameter that decreases from one end to the other end and an outer diameter that is a variable diameter step.
10. The vibratory shock drilling acceleration tool of claim 1, further comprising a motion limiting mechanism (190) disposed downstream of the reciprocating shock device, comprising:
a limiting snap ring (191) arranged between the impact hammer seat and the second short section;
an annular groove (112) disposed on an inner wall of the housing, the retainer snap ring extending radially into the annular groove and being axially movable within the annular groove to define a range of motion of the reciprocating ram in the axial direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910084187.0A CN111485819B (en) | 2019-01-29 | 2019-01-29 | Vibration impact drilling acceleration tool |
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|---|---|---|---|
| CN201910084187.0A CN111485819B (en) | 2019-01-29 | 2019-01-29 | Vibration impact drilling acceleration tool |
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| CN111485819B CN111485819B (en) | 2024-09-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307388A (en) * | 2021-06-02 | 2021-08-27 | 戴梦梦 | Jet aeration system capable of adjusting jet direction and adjusting method thereof |
| CN114992833A (en) * | 2021-03-02 | 2022-09-02 | 中国石油化工股份有限公司 | Nozzle for exhaust system and nozzle wind speed adjusting method |
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| CN102966305A (en) * | 2012-12-11 | 2013-03-13 | 闫铁 | Near-bit circumferential resonance impacter |
| CN104563862A (en) * | 2014-12-17 | 2015-04-29 | 中国石油大学(北京) | Composite impact well drilling tool |
| US20180171717A1 (en) * | 2015-10-01 | 2018-06-21 | Cnpc Xibu Drilling Engineering Company Limited | Torsion impact speed acceleration device |
| CN105927147A (en) * | 2016-07-05 | 2016-09-07 | 西南石油大学 | Speed raising tool for percussion drilling and method |
| CN108915583A (en) * | 2018-06-25 | 2018-11-30 | 北京工业大学 | Mechanical composite impact drilling speed tool |
| CN209724214U (en) * | 2019-01-29 | 2019-12-03 | 中国石油化工股份有限公司 | A kind of vibratory impulse drilling speed tool |
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| CN114992833A (en) * | 2021-03-02 | 2022-09-02 | 中国石油化工股份有限公司 | Nozzle for exhaust system and nozzle wind speed adjusting method |
| CN113307388A (en) * | 2021-06-02 | 2021-08-27 | 戴梦梦 | Jet aeration system capable of adjusting jet direction and adjusting method thereof |
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