CN213478222U

CN213478222U - PDC (polycrystalline diamond compact) sleeve milling drill bit

Info

Publication number: CN213478222U
Application number: CN202022122958.1U
Authority: CN
Inventors: 陈美容; 付振奇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-18
Anticipated expiration: 2030-09-24

Abstract

The utility model belongs to the technical field of repairing oil and gas wells, geothermal wells, water source wells and the like, in particular to a PDC sleeve milling drill bit, which comprises a drill bit body, wherein the surface of the drill bit body is fixedly connected with a connecting pipe, and the surface of the connecting pipe is fixedly connected with a bearing; this PDC cover milling drill bit, through setting up the connecting pipe, connecting cylinder and external screw thread section of thick bamboo, when connecting the device, people align slide bar and spacing groove and insert the back and rotate the connecting cylinder, and then make connecting cylinder and external screw thread section of thick bamboo carry out threaded connection, in the pivot, under the effect of connecting cylinder and external screw thread section of thick bamboo, the people of being more convenient for connect the device, this PDC cover milling drill bit, through setting up the spring, slide bar and slider, people are through rotating the connecting cylinder, and then make connecting cylinder and external screw thread section of thick bamboo carry out threaded connection, drive connecting pipe one end simultaneously, under the effect of spring, thereby fix the slide bar joint in the draw-in groove, at the slide bar, under the effect of draw-in groove and spring, the security of the device has further been strengthened.

Description

PDC (polycrystalline diamond compact) sleeve milling drill bit

Technical Field

The utility model belongs to the technical field of restoreing such as oil gas well, geothermal well and water source well, concretely relates to PDC cover milling bit.

Background

The well repair is mainly to detect and repair a series of faults such as insufficient yield, poor quality and the like of pipe wells such as oil and gas wells, geothermal wells, water source wells and the like, so that the fault wells or wells which are scrapped are put into production again, the oil and gas wells, geothermal wells, water wells and the like which have faults cannot normally run for production, too much electric energy is consumed but corresponding oil and gas resources cannot be extracted under the condition of insufficient yield, the heat wells cannot play the basic performance of the geothermal wells when the water temperature is reduced, the casing pipes which are thousands of meters in length are formed by mutually connecting a plurality of standard casing pipes, the casing pipes are used as coupling joints, a cement ring is arranged between the casing pipes and a well wall, if the casing pipes are high, the casing milling drill bit only needs to crush the cement ring, if the casing pipes are low in degree, the eccentricity is large, the casing milling drill bit has to damage the corresponding stratum, and the casing milling drill bit needs to pass through a step between the coupling joints which is transited from 139mm to 154mm, the coupling can not be destroyed, the casing pipes which are connected with each other are cut off, the casing pipes are not beneficial to taking out, the casing drill bit used in the existing well repair is mostly single threaded connection, and the safety is lower.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a PDC cover milling drill has the high characteristics of security.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a PDC cover milling drill bit, includes the drill bit body, drill bit body fixedly connected with connecting pipe, connecting pipe fixed surface is connected with the bearing, the connecting cylinder has been cup jointed on the bearing surface, the thread groove has been seted up to the connecting cylinder inner wall, the first stopper of connecting pipe fixed surface is connected with, the connecting cylinder has an external screw thread section of thick bamboo through thread groove threaded connection.

As a further aspect of the present invention: the limiting groove has been seted up to an external screw thread section of thick bamboo inner wall, the limiting groove is total two, and the symmetry is seted up at an external screw thread section of thick bamboo inner wall, draw-in groove has been seted up on an external screw thread section of thick bamboo surface, the draw-in groove is total two, and the symmetry is seted up on an external screw thread section of thick bamboo surface.

As a further aspect of the present invention: the connecting pipe is internally provided with two movable bins, the movable bins are symmetrically arranged inside the connecting pipe, the movable bins are internally provided with two sliding chutes, and the sliding chutes are symmetrically arranged inside the movable chutes.

As a further aspect of the present invention: the sliding device is characterized in that a sliding block is connected in the sliding groove in a sliding mode, a connecting block is fixedly connected to the surface of the sliding block, a sliding rod is fixedly connected to the surface of the connecting block, a through hole is formed in the surface of the movable bin, and the sliding rod penetrates through the through hole.

As a further aspect of the present invention: the connecting block surface is fixedly connected with a second limiting block, the surface of the second limiting block is sleeved with a spring, the inside of the movable bin is fixedly connected with a third limiting block, and the spring is sleeved on the surface of the third limiting block.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this PDC cover milling bit through setting up connecting pipe, connecting cylinder and external screw thread section of thick bamboo, when connecting the device, people align slide bar and spacing groove and insert the back and rotate the connecting cylinder, and then make connecting cylinder and external screw thread section of thick bamboo carry out threaded connection, under the effect of pivot, connecting cylinder and external screw thread section of thick bamboo, the people of being more convenient for are connected the device.

2. This PDC cover milling drill bit, through setting up spring, slide bar and slider, people are through rotating the connecting cylinder, and then make connecting cylinder and external screw thread section of thick bamboo carry out threaded connection, drive connecting pipe one end simultaneously, under the effect of spring to fix the slide bar joint in the draw-in groove, under the effect of slide bar, draw-in groove and spring, further strengthened the device's security.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic three-dimensional structure of the present invention;

FIG. 2 is a front sectional view of the present invention;

FIG. 3 is an enlarged schematic structural view of the A-position of the present invention;

in the figure: 1. a bit body; 2. a connecting pipe; 3. a bearing; 4. a connecting cylinder; 5. a thread groove; 6. a first stopper; 7. an externally threaded barrel; 8. a limiting groove; 9. a card slot; 10. a movable bin; 11. a chute; 12. a slider; 13. connecting blocks; 14. a slide bar; 15. a through hole; 16. a second limiting block; 17. a spring; 18. and a third limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a PDC cover milling drill bit, including drill bit body 1, 1 fixed surface of drill bit body is connected with connecting pipe 2, 2 fixed surface of connecting pipe are connected with bearing 3, connecting cylinder 4 has been cup jointed on the bearing 3 surface, thread groove 5 has been seted up to 4 inner walls of connecting cylinder, 2 fixed surface of connecting pipe are connected with first stopper 6, connecting cylinder 4 has external screw thread section of thick bamboo 7 through 5 threaded connection of thread groove, through setting up connecting pipe 2, connecting cylinder 4 and external screw thread section of thick bamboo 7, when connecting the device, people align slide bar 14 and spacing groove 8 and insert back and rotate connecting cylinder 4, and then make connecting cylinder 4 and external screw thread section of thick bamboo 7 carry out threaded connection, in the pivot, under the effect of connecting cylinder 4 and external screw thread section of thick bamboo 7, the people of being.

Specifically, a limiting groove 8 has been seted up to a 7 inner walls of an external screw thread section of thick bamboo, and limiting groove 8 is total two, and the symmetry is seted up at a 7 inner walls of an external screw thread section of thick bamboo, and draw-in groove 9 has been seted up on a 7 surface of an external screw thread section of thick bamboo, and draw-in groove 9 is total two, and the symmetry is seted up on a 7 surface of an.

Specifically, the inside movable bin 10 of having seted up of connecting pipe 2, movable bin 10 is total two, and the symmetry is seted up inside connecting pipe 2, and movable bin 10 is inside to have seted up spout 11, and spout 11 is total two, and the symmetry is seted up inside the activity inslot.

Specifically, a sliding block 12 is slidably connected in the sliding groove 11, a connecting block 13 is fixedly connected to the surface of the sliding block 12, a sliding rod 14 is fixedly connected to the surface of the connecting block 13, a through hole 15 is formed in the surface of the movable bin 10, and the sliding rod 14 penetrates through the through hole 15.

Concretely, connecting block 13 fixed surface is connected with second stopper 16, spring 17 has been cup jointed on second stopper 16 surface, through setting up spring 17, slide bar 14 and slider 12, people are through rotating connecting cylinder 4, and then make connecting cylinder 4 and external screw thread section of thick bamboo 7 carry out threaded connection, drive 2 one ends of connecting pipe simultaneously, under spring 17's effect, thereby fix slide bar 14 joint in draw-in groove 9, at slide bar 14, under draw-in groove 9 and spring 17's the effect, the device's security has further been strengthened, the inside fixedly connected with third stopper 18 in movable bin 10, spring 17 cup joints on the 18 surfaces of third stopper.

The utility model discloses a theory of operation does:

s1, firstly, people move the device to a designated position, and when the device is installed, people align the connecting cylinder 4 with the external thread rod and align the sliding rod 14 with the limiting groove 8;

s2, then people press the slide bar 14 and then rotate the connecting cylinder 4, so that the connecting cylinder 4 is in threaded connection with the external thread cylinder 7, the connecting pipe 2 is driven to move, after the connecting pipe 2 moves to a specified distance, under the action of the spring 17, the slide bar 14 is returned and clamped in the clamping groove 9 to be fixed, and the safety of the device is enhanced.

Finally, it should be noted that: 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 embodiments, or 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

1. A PDC shell milling bit, includes bit body (1), its characterized in that: drill bit body (1) fixed surface is connected with connecting pipe (2), connecting pipe (2) fixed surface is connected with bearing (3), connecting cylinder (4) have been cup jointed on bearing (3) surface, thread groove (5) have been seted up to connecting cylinder (4) inner wall, connecting pipe (2) fixed surface is connected with first stopper (6), connecting cylinder (4) have external screw thread section of thick bamboo (7) through thread groove (5) threaded connection.

2. The PDC milling drill bit of claim 1, wherein: spacing groove (8) have been seted up to an external screw thread section of thick bamboo (7) inner wall, spacing groove (8) are total two, and the symmetry is seted up at an external screw thread section of thick bamboo (7) inner wall, draw-in groove (9) have been seted up on an external screw thread section of thick bamboo (7) surface, draw-in groove (9) are total two, and the symmetry is seted up on an external screw thread section of thick bamboo (7) surface.

3. The PDC milling drill bit of claim 1, wherein: connecting pipe (2) inside has seted up movable bin (10), movable bin (10) are total two, and the symmetry is seted up inside connecting pipe (2), spout (11) have been seted up to movable bin (10) inside, spout (11) are total two, and the symmetry is seted up inside the activity inslot.

4. The PDC casing milling drill bit of claim 3, wherein: sliding connection has slider (12) in spout (11), slider (12) fixed surface is connected with connecting block (13), connecting block (13) fixed surface is connected with slide bar (14), through-hole (15) have been seted up on activity storehouse (10) surface, slide bar (14) are worn to establish in through-hole (15).

5. The PDC shell milling bit of claim 4, wherein: the connecting block (13) surface fixed connection has second stopper (16), spring (17) have been cup jointed on second stopper (16) surface, the inside fixed connection of activity storehouse (10) has third stopper (18), spring (17) cup joint on third stopper (18) surface.