CN110735597B

CN110735597B - Hydraulic drive drill bit impactor

Info

Publication number: CN110735597B
Application number: CN201911062698.9A
Authority: CN
Inventors: 鞠国帅; 闫铁; 孙晓峰; 邵阳; 袁圆; 刘照义; 李沼萱
Original assignee: Northeast Petroleum University
Current assignee: Northeast Petroleum University
Priority date: 2019-11-03
Filing date: 2019-11-03
Publication date: 2021-02-19
Anticipated expiration: 2039-11-03
Also published as: CN110735597A

Abstract

The invention relates to a hydraulic drive drill bit impactor, which comprises a shell, a helical blade, a middle cavity, a spring, a vibrator, an upper toothed ring, a lower toothed ring and a drill bit, wherein a turntable rail is arranged at the upper part of the shell, a turntable is embedded in the turntable rail, the outer side of the helical blade is arranged on the inner wall of the turntable, the upper end of a connecting column is arranged on the helical blade, the lower end of the connecting column penetrates through the middle cavity to extend into the vibrator and is fixedly connected with the lower toothed ring, and the middle cavity is arranged in the shell and is positioned below the turntable rail; the vibrator is arranged in the middle cavity, the lower end of the spring is connected with the vibrator, the upper end of the spring is connected with the middle cavity, and the wall of the middle cavity is provided with a pore passage; an upper toothed ring is arranged in the vibrator, the upper toothed ring corresponds to the lower toothed ring, the outer wall of the vibrator is provided with two symmetrically arranged clamping pieces, the inner wall of the middle cavity is provided with a vibration groove, and the two clamping pieces are respectively positioned in the corresponding vibration grooves; a connector connects the vibrator and the drill bit together. The invention has obvious speed-up effect and saves energy consumption.

Description

Hydraulic drive drill bit impactor

The technical field is as follows:

the invention relates to an impactor for generating power by fluid in the field of drilling engineering, in particular to a hydraulic drive drill bit impactor.

Background art:

with the continuous reduction of oil and gas resources, the well depth continuously extends to the deep layer and the ultra-deep layer. The hardness of deep stratum rock is high, which causes the difficulty of drilling to increase, the mechanical drilling speed to slow down and the cost of drilling to increase. The drilling difficulty of hard stratum becomes more and more prominent, the efficient rock breaking technology is more important, the quality of the rock breaking efficiency directly determines the speed and the cost of drilling, and the economic benefit of drilling engineering is determined. The impactor is used as a power tool for assisting in breaking rock underground, receives more and more attention from the industry because extra energy does not need to be provided, and gradually becomes an indispensable technical means for accelerating the speed of a deep well. Although various impactors are proved to improve the drilling efficiency in field tests, the impactors have the defects of short service life, easy influence of the performance of drilling fluid and the like, so that the impactors are not widely applied to the operation of drilling machines.

The invention content is as follows:

it is an object of the present invention to provide a hydraulically driven bit impactor for addressing the problems of slower drilling rates and lower tool impact effectiveness as well depths increase.

The technical scheme adopted by the invention for solving the technical problems is as follows: the hydraulic drive drill bit impactor comprises a shell, a spiral blade, a middle cavity, a spring, a vibrator, an upper toothed ring, a lower toothed ring, a connector and a drill bit, wherein a turntable rail is arranged at the upper part of the shell, the turntable is embedded in the turntable rail, the outer side of the spiral blade is arranged on the inner wall of the turntable, the upper end of a connecting column is arranged on the spiral blade, the lower end of the connecting column penetrates through the middle cavity to extend into the vibrator and is fixedly connected with the lower toothed ring, and the middle cavity is arranged in the shell and is positioned below the turntable rail; the vibrator is arranged in the middle cavity, the lower end of the spring is connected with the vibrator, the upper end of the spring is connected with the middle cavity, the wall of the middle cavity is provided with a pore channel, the upper port of the pore channel is communicated with the inner cavity of the shell, and the lower port of the pore channel points to the drill bit; the vibrator is a closed cylindrical object, an upper toothed ring is arranged in the vibrator and corresponds to the lower toothed ring, two clamping pieces are symmetrically arranged on the outer wall of the vibrator, a vibration groove is formed in the inner wall of the middle cavity, and the two clamping pieces are respectively positioned in the corresponding vibration grooves; a connector connects the vibrator and the drill bit together.

In the scheme, the upper toothed ring and the lower toothed ring have the same tooth-shaped structure, one side of each tooth is vertical, and the other side of each tooth forms an included angle of 30 degrees with the vertical side, so that the teeth can be better combined together; the maximum length of the vertical part of the tooth-shaped structures of the upper tooth ring and the lower tooth ring is smaller than the distance of the card moving in the vibration groove.

In the scheme, the upper tooth ring and the top of the vibrator are integrated.

In the scheme, the pore channels are uniformly arranged along the circumferential direction of the middle cavity wall.

In the scheme, the connector is arc-shaped, the upper end surface of the connector is fixedly connected with the bottom of the vibrator, and the arc-shaped part of the connector is matched with the drill bit.

The invention has the following beneficial effects:

1. the invention ensures that the drill bit generates good longitudinal vibration through the matching motion of the upper gear ring and the lower gear ring, and the speed-up effect is very obvious.

2. The invention drives the helical blade through water power, provides power for the lower toothed ring, can save energy consumption and is very practical.

3. The invention has simple structure, easy realization and lower cost, and is convenient for popularization and application in the oilfield field.

Fourthly, explanation of the attached drawings:

fig. 1 is a three-dimensional cross-sectional view of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a two-dimensional cross-sectional view of the present invention.

FIG. 4 is a schematic view of the relationship between the middle vibrating groove and the card in accordance with the present invention.

FIG. 5 is a schematic diagram of the relationship between the vibrator and the central cavity in the present invention.

FIG. 6 is a diagram showing the positional relationship among the upper ring gear, the lower ring gear, the connecting column, the vibrator, the middle chamber, and the housing according to the present invention.

In the figure: 1. the drilling machine comprises a shell, 2. a turntable track, 3. a turntable, 4. a connecting column, 5. a helical blade, 6. a middle cavity, 7. a spring, 8. a vibrator, 9. a pore passage, 10. a vibration groove, 11. a clamping piece, 12. an upper toothed ring, 13. a lower toothed ring, 14. a connector and 15. a drill bit.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

as shown in fig. 1-6, the hydraulic drive drill bit impactor comprises a shell 1, a helical blade 5, a middle cavity 6, a spring 7, a vibrator 8, an upper toothed ring 12, a lower toothed ring 13, a connector 14 and a drill bit 15, wherein a turntable rail 2 is installed on the upper portion of the shell 1, a turntable 3 is embedded in the turntable rail 2, the outer side of the helical blade 5 is installed on the inner wall of the turntable 3, the upper end of a connecting column 4 is installed on the helical blade 5, the lower end of the connecting column 4 penetrates through the middle cavity 6 to extend into the vibrator 8 and is fixedly connected with the lower toothed ring 13, when the helical blade 5 rotates, the lower toothed ring 13 is driven to rotate by the connecting column 4, and the middle cavity 6 is installed in the shell 1 and is located below the turntable rail; the vibrator 8 is arranged in the middle cavity 6, the lower end of the spring 7 is connected with the vibrator 8, the upper end of the spring 7 is connected with the middle cavity 6, the middle cavity wall is provided with a pore passage 9, the upper end opening of the pore passage 9 is communicated with the inner cavity of the shell, the pore passage 9 is uniformly arranged along the circumferential direction of the middle cavity wall, the lower end opening of the pore passage 9 points to the drill bit 15, and after the liquid works through the helical blade 5, the liquid flows to the drill bit 15 along the middle cavity wall through the. The connector 14 connects the vibrator 8 and the drill 15 together, the connector 14 is arc-shaped, the upper end surface of the connector is fixedly connected with the bottom of the vibrator 8, and the arc-shaped part of the connector is matched with the drill 15.

The vibrator 8 is a closed cylindrical object, an upper toothed ring 12 is arranged in the vibrator 8, the upper toothed ring 12 corresponds to a lower toothed ring 13, teeth of the upper toothed ring 12 are meshed with teeth of the lower toothed ring 13, and a gap is reserved between two corresponding teeth, so that the lower toothed ring 13 drives the upper toothed ring 12 to move up and down when rotating, two clamping pieces 11 symmetrically arranged are arranged on the outer wall of the vibrator 8, a vibration groove 10 is formed in the inner wall of the middle cavity 6, the two clamping pieces 11 are respectively positioned in the corresponding vibration grooves 10, and the clamping pieces 11 can slide up and down in the vibration grooves 10;

the upper ring gear 12 is integral with the top of the vibrator 8. The upper gear ring 12 and the lower gear ring 13 have the same tooth-shaped structure, one side of each tooth is vertical, and the other side of each tooth forms an included angle of 30 degrees with the vertical side, so that the teeth can be better combined together, the spring 7 is always in a compressed state, when the teeth are in a static state, the clamping piece 11 is positioned at the lowest end of the vibration groove 10, and the upper gear ring 12 and the lower gear ring 13 are tightly combined; the maximum length of the vertical part of the tooth-shaped structures of the upper toothed ring 12 and the lower toothed ring 13 is smaller than the distance of the card 11 moving in the vibration groove 10.

When the liquid flows downward from the upper end, first passing the spiral blade 5, the spiral blade 5 rotates counterclockwise. The rotary table 3 is connected with a helical blade 5 to rotate in the rotary table track 2. The helical blade 5 drives the lower toothed ring 13 to rotate anticlockwise through the connecting column 4. The lower gear ring 13 rotates anticlockwise to drive the upper gear ring 12 to move up and down. The design of the card 11 and the vibration groove 10 enables the upper toothed ring 12 to move only up and down, and avoids the horizontal rotation of the upper toothed ring following the lower toothed ring 13. Because the spring 7 is always in a compressed state, after the tooth-shaped structures of the upper gear ring 12 and the lower gear ring 13 are scratched, the upper gear ring 12 is pushed downwards to be matched with the lower gear ring 13 again, and the next vibrator moves in the axial direction. Liquid passing through the helical blade 5 flows through the bore 9 towards the drill bit 15.

Claims

1. A hydraulically driven bit impactor, comprising: the drilling machine comprises a shell (1), a helical blade (5), a middle cavity (6), a spring (7), a vibrator (8), an upper toothed ring (12), a lower toothed ring (13), a connector (14) and a drill bit (15), wherein a turntable rail (2) is installed on the upper portion of the shell (1), a turntable (3) is embedded in the turntable rail (2), the outer side of the helical blade (5) is installed on the inner wall of the turntable, the upper end of a connecting column (4) is installed on the helical blade (5), the lower end of the connecting column (4) penetrates through the middle cavity (6) to extend into the vibrator (8) and is fixedly connected with the lower toothed ring (13), and the middle cavity (6) is installed in the shell (1) and is located below the turntable rail (2); a vibrator (8) is arranged in the middle cavity (6), the lower end of the spring (7) is connected with the vibrator (8), the upper end of the spring (7) is connected with the middle cavity (6), the wall of the middle cavity is provided with a pore channel (9), the upper port of the pore channel (9) is communicated with the inner cavity of the shell, and the lower port of the pore channel (9) points to a drill bit (15); the vibrator (8) is a closed cylindrical object, an upper toothed ring (12) is arranged in the vibrator (8), the upper toothed ring (12) corresponds to a lower toothed ring (13), two clamping pieces (11) which are symmetrically arranged are arranged on the outer wall of the vibrator (8), a vibration groove (10) is formed in the inner wall of the middle cavity (6), and the two clamping pieces (11) are respectively positioned in the corresponding vibration grooves (10); a connector (14) connects the vibrator (8) and the drill bit (15) together.

2. The hydraulically driven bit impactor of claim 1 wherein: the upper gear ring (12) and the lower gear ring (13) have the same tooth-shaped structure, one side of each tooth is vertical, and the other side and the vertical side form an included angle of 30 degrees; the spring (7) is always in a compressed state, and in a static state, the clamping piece (11) is positioned at the lowest end of the vibration groove (10), and the upper toothed ring (12) and the lower toothed ring (13) are tightly closed; the maximum length of the vertical part of the tooth-shaped structures of the upper gear ring (12) and the lower gear ring (13) is smaller than the distance of the card moving in the vibration groove (10).

3. The hydraulically driven bit impactor of claim 2 wherein: the upper toothed ring (12) and the top of the vibrator (8) are integrated.

4. The hydraulically driven bit impactor of claim 3 wherein: the pore channels (9) are uniformly arranged along the circumferential direction of the middle cavity wall.

5. The hydraulically driven bit impactor of claim 4 wherein: the connector (14) is arc-shaped, the upper end surface of the connector is fixedly connected with the bottom of the vibrator (8), and the arc-shaped part of the connector is matched with the drill bit (15).