CN210564438U

CN210564438U - Forging and milling device

Info

Publication number: CN210564438U
Application number: CN201921698964.2U
Authority: CN
Inventors: 吴迪
Original assignee: Rock Tianjin Oilfield Technology Service Co ltd
Current assignee: Rock Tianjin Oilfield Technology Service Co ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-05-19
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a forge and mill ware belongs to the oil field development field, including top connection, main part, sealed end cap, sealing member one, sealing member two, piston, spring, sealing member three, centrum, sealing member four, forge milling cutter, arbor, carbide piece, lower clutch, blade cooling body, main part upper portion is passed through threaded connection and is connected on the top connection. The utility model discloses a blade locking design, after the blade is activated, specific design firmly locks the blade, has reduced the vibrations of blade when the operation of milling to the life-span and the performance of blade have been guaranteed. The nozzle design at the lower part of the blade has the functions of cleaning and cooling the blade and carrying scrap iron. The iron chips milled out are prevented from rotating at the blade, so that the blade is prevented from being abraded in an accelerated manner, the nozzle can be detached, and the size of the nozzle can be calculated and replaced according to different well conditions and equipment conditions, so that the device can play an excellent role in different well conditions and situations.

Description

Forging and milling device

Technical Field

The utility model relates to an oil field development field, especially a forge and mill ware.

Background

With the exploitation of the oil field, part of the oil wells are scrapped and abandoned at the later stage; during normal drilling, the wellbore being drilled may also become scrapped due to accidents. The windowing sidetrack drilling in the original well hole is the best choice for improving economic benefit and working efficiency. The forging and milling device can be applied to the upper part of the accident section or the planned sidetracking position to carry out milling operation on the sleeve, and then the cement plug sidetracking is carried out after sufficient window sections are milled.

And the utility model discloses an use not only restricts to carrying out the sidetracking operation, can satisfy the perforation section simultaneously and grind and mill the window and carry out well completion production operation, crowded cement shutoff old well operation and the simple wide application such as mill casing pipe operation.

The traditional milling casing operation is usually characterized in that a blade is abraded and is subjected to scaling due to low milling rate and fast abrasion, and the blade needs to be replaced by pulling a drill for many times to finish a window long enough to meet the requirement of sidetracking. The reason is that the conventional milling has no way to fix the blade, and the blade is easy to vibrate, so that the abrasion of the blade is accelerated, and the milling efficiency is reduced, so that a forging and milling device for solving the problems is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the existing forging and milling device blade is easy to wear and is unstable, and designing a forging and milling device.

The technical scheme of the utility model is that, the forging and milling device comprises an upper joint, a main body, a sealing plug, a first sealing element, a second sealing element, a piston, a spring, a third sealing element, a cone, a fourth sealing element, a forging milling cutter, a cutter shaft, a hard alloy block, a lower joint and a blade cooling mechanism, wherein the upper part of the main body is connected with the upper joint through a thread;

the sealing plug is connected with the upper part in the main body through threads, the first sealing element is arranged on an inner ring of the sealing plug, the second sealing element is arranged on an outer ring of the sealing plug and abuts against the inner wall of the main body, the piston is slidably arranged in the main body, the outer wall of the upper end of the piston abuts against the first sealing element to seal, the spring is arranged on the upper part of the piston, the other end of the spring is connected with the upper part in the main body, the third sealing element is arranged on the outer surface of the upper part of the piston and abuts against the inner wall of the main body, the cone is connected with the lower half part of the piston through threads, the fourth sealing element is arranged on the upper end of the cone and abuts against the inner wall of the main body, the three forging milling cutters are annularly and uniformly distributed on the lower part of the, the blade cooling and anti-blocking mechanism is arranged on the vertebral body.

Preferably, the blade cooling machine and the anti-blocking mechanism comprise a first nozzle, a fifth sealing element, a second nozzle and a sixth sealing element, the first nozzle is installed on the upper portion of the cone body through threads, the fifth sealing element is installed on an outer ring of the first nozzle, the second nozzle is installed inside the lower end of the cone body, and the sixth sealing element is installed on an outer ring of the second nozzle and abuts against the inside of the lower end of the cone body.

Preferably, the nozzles are three and correspond to the position of the forge milling cutter.

Preferably, a protective cap is arranged outside the lower part of the vertebral body through threads.

Preferably, the forge milling cutter is rotatable completely into the body.

Advantageous effects

The utility model provides a forge and mill ware possesses following beneficial effect, and this device utilizes blade locking design through its structural design, and after the blade was activated, specific design firmly locked the blade, has reduced the vibrations of blade when milling the operation to the life-span and the performance of blade have been guaranteed. The nozzle design at the lower part of the blade has the functions of cleaning and cooling the blade and carrying scrap iron. The iron fillings that have prevented to mill out are beaten in blade department and are changeed, lead to the wearing and tearing of blade with higher speed, and the nozzle can be dismantled, can be according to different well conditions and equipment situation, calculate the size of changing the nozzle, make this device exert excellent ability under different well conditions and situation, and then realized the stable fixed and cooling of blade and reduced wear function, the practicality is strong.

Drawings

Fig. 1 is a schematic structural diagram of a forging milling cutter of the forging milling machine according to the present invention in a closed state;

fig. 2 is a schematic structural diagram of an open state of a forging cutter of the forging and milling device of the present invention;

fig. 3 is a schematic right-view structural diagram of the forging and milling device of the present invention;

FIG. 4 is a schematic view of a portion A of FIG. 1 according to the present invention;

FIG. 5 is a schematic view of a portion B of FIG. 1 according to the present invention;

FIG. 6 is a schematic view of a partial enlarged structure of the portion C shown in FIG. 1 according to the present invention;

fig. 7 is a schematic diagram of a partially enlarged structure of the portion D shown in fig. 1 according to the present invention.

In the figure, 1, upper joint; 2. a main body; 3. sealing the plug; 4. a first sealing element; 5. a second sealing element; 6. a piston; 7. a spring; 8. a third sealing element; 9. a vertebral body; 10. a fourth sealing element; 11. forging a milling cutter; 12. a cutter shaft; 13. a hard alloy block; 14. a lower joint; 15. a first nozzle; 16. a fifth sealing element; 17. a second nozzle; 18. a sixth sealing element; 19. a protective cap.

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.

Referring to fig. 1-7, the present invention provides a technical solution: a forging and milling device comprises an upper joint 1, a main body 2, a sealing plug 3, a first sealing element 4, a second sealing element 5, a piston 6, a spring 7, a third sealing element 8, a cone 9, a fourth sealing element 10, a forging and milling cutter 11, a cutter shaft 12, a hard alloy block 13, a lower joint 14 and a blade cooling mechanism, wherein the upper part of the main body 2 is connected to the upper joint 1 through threads, and the threads are connected so as to be convenient to disassemble;

the sealing plug 3 is connected with the upper part inside the main body 2 through threads, the first sealing element 4 is arranged on the inner ring of the sealing plug 3, the second sealing element 5 is arranged on the outer ring of the sealing plug 3 and is abutted against the inner wall of the main body 2, and the second sealing element 5 seals the space between the sealing plug 3 and the main body 2;

the piston 6 is slidably arranged in the main body 2, the outer wall of the upper end of the piston 6 abuts against the first sealing element 4 for sealing, the spring 7 is arranged at the upper part of the piston 6, the other end of the spring is connected with the upper part in the main body 2, the third sealing element 8 is arranged on the outer surface of the upper part of the piston 6 and abuts against the inner wall of the main body 2, the cone 9 is connected to the lower half part of the piston 6 through threads, the fourth sealing element 10 is arranged at the upper end of the cone 9 and abuts against the inner wall of the main body 2, and the fourth;

three forging cutters 11 are annularly and uniformly distributed at the lower part of the main body 2, the forging cutters 11 are rotatably arranged on the lower part of the main body 2 by a cutter shaft 12, a hard alloy block 13 is welded and arranged on the outer surface of the forging cutters 11, and a lower joint 14 is arranged at the lower end of the main body 2 through threads.

Wherein the blade cooling and anti-clogging mechanism is arranged on the vertebral body 9. The blade cooling machine and the anti-blocking mechanism comprise a first nozzle 15, a fifth sealing element 16, a second nozzle 17 and a sixth sealing element 18, wherein the first nozzle 15 is installed on the upper part of the cone 9 through threads, and the fifth sealing element 16 is installed on the outer ring of the first nozzle 15 and used for sealing the first nozzle 15;

the second nozzle 17 is arranged in the lower end of the cone 9, and the sixth sealing element 18 is arranged on the outer ring of the second nozzle 17 and is abutted against the inner part of the lower end of the cone 9 to seal the second nozzle 17. The three nozzles correspond to the positions of the forging milling cutters 11, so that the forging milling cutters 11 can be cooled respectively.

A protective cap 19 is arranged outside the lower part of the vertebral body 9 through threads to protect the lower end of the vertebral body 9.

The forge mill 11 is fully rotatable into the body 2 so that the forge mill 11 falls fully into the body 2 when it is retracted.

In this embodiment:

the working process and principle are as follows:

the forging and milling machine is referred to as the device below;

the upper part of the device is provided with a thread for a drill rod, and the device is connected with the drill rod through the thread. The device and the drill rod are put into a designated position and then are subjected to cutting and milling operation.

The device is put into a finger position, a drill column is rotated, circulation is established, the discharge capacity is continuously improved, the pump pressure is gradually increased, and drilling fluid enters an inner hole of an upper connector 1 of the device through the interior of the drill rod; upon entry into the device, the piston 6 is advanced along the bore of the piston 6 and into the interior of the vertebral body 9. An overflowing hole is formed at the connecting proximal end of the cone 9 and the piston 6, drilling fluid or mud enters the lower part of the piston 6 through the overflowing hole, a nozzle II 17 is arranged at the lower part of the cone 9, a nozzle I15 is designed on the side face, most drilling fluid enters the nozzle II 17 and flows to the outside of the device, and pressure difference is generated between the inside of the device and the outside of the device under the throttling action of the nozzle.

A spring 7 is arranged on the upper part of the piston 6 in the main body, and a chamber in which the spring 7 is arranged is communicated with the outside of the device. Under the effect of the pressure, the drilling fluid pushes the piston 6 up and at the same time compresses the spring 7. The lower part of the piston 6 is provided with threads and is connected with the vertebral body 9 through the threads to pull the vertebral body 9 to move upwards.

The cone 9 moves upwards, the cone 9 pushes the forging milling cutter 11 outwards through the upper conical surface, at the moment, the drill rod is rotated, the hard alloy block 13 on the forging milling cutter 11 gradually cuts the casing under the action of the forging milling cutter 11 body, after the casing is completely cut, the lower end surface of the forging milling cutter 11 is combined with the main body 2 and cannot move outwards, meanwhile, the inner inclined surface is closely combined with the inclined surface on the cone 9, the forging milling cutter 11 is positioned at a dead point position, at the moment, the drill string is pressed downwards, and the casing is cut, milled and ground. In the milling process, the forging milling cutter 11 is in a tight combination state, the hard alloy block 13 cuts and the milling sleeve is stable, vibration cannot be generated, and the cutting efficiency of the hard alloy block 13 is improved.

During the milling process, drilling fluid enters the cavity of the piston 6 along the inside of the device, enters the annular hole along the water hole at the lower part of the cone 9 and the first 15 side nozzles of the cone 9 inside the cone 9, the inner diameter of the first 15 side nozzles of the cone 9 is small, the drilling fluid forms jet flow at the first 15 nozzles, the hard alloy block 13 is fully cooled, and milled chips are taken away.

After the milling operation is finished, the pump is turned off, the internal pressure and the external pressure are balanced, the spring 7 is reset, the piston 6 is pushed to move downwards, the cone 9 is pushed to move downwards, the rear part of the milling forge cutter 11 is unsupported, the pipe column is lifted upwards, the milling forge cutter 11 is retracted into the device, and the milling forge operation is finished.

The device adopts a hydraulic pushing piston 6. The spring 7 is compressed, and simultaneously, the cone 9 is pulled to push the forge milling cutter 11 out of the device, so that the sleeve is cut, milled and milled. In the cutting and milling process, the inclined plane is designed on the main body 2 and the inclined plane is designed on the cone 9 to enable the forging milling cutter 11 to be positioned at a dead point position, and the alloy cutting sleeve on the forging milling cutter 11 is stable and free of vibration. Two rows of hard alloy blocks 13 are welded on each forging milling cutter 11, and six rows of hard alloy blocks 13 participate in cutting and milling.

In the cutting and milling process of the device, the blade is positioned at the dead point position, the vibration of the cutting sleeve of the hard alloy block 13 is very small, the service life of the single-set forge milling cutter 11 is prolonged, and the service efficiency of the device is increased.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A forging and milling device comprises an upper joint (1), a main body (2), a sealing plug (3), a first sealing element (4), a second sealing element (5), a piston (6), a spring (7), a third sealing element (8), a cone (9), a fourth sealing element (10), a forging and milling cutter (11), a cutter shaft (12), a hard alloy block (13), a lower joint (14) and a blade cooling mechanism, wherein the upper part of the main body (2) is connected to the upper joint (1) through threads;

the sealing plug is characterized in that the sealing plug (3) is connected with the upper part inside the main body (2) through threads, the first sealing element (4) is arranged on the inner ring of the sealing plug (3), the second sealing element (5) is arranged on the outer ring of the sealing plug (3) and is abutted against the inner wall of the main body (2), the piston (6) is slidably arranged inside the main body (2), the outer wall of the upper end of the piston (6) is abutted against the first sealing element (4) for sealing, the spring (7) is arranged on the upper part of the piston (6) and is connected with the upper part inside the main body (2) at the other end of the spring, the third sealing element (8) is arranged on the outer surface of the upper part of the piston (6) and is abutted against the inner wall of the main body (2), the cone (9) is connected with the lower half part of the piston (6) through threads, the fourth sealing element, the three forging milling cutters (11) are annularly and uniformly distributed on the lower portion of the main body (2), the forging milling cutters (11) are rotatably arranged on the lower portion of the main body (2) through the cutter shaft (12), the hard alloy block (13) is welded and arranged on the outer surface of the forging milling cutters (11), the lower joint (14) is arranged at the lower end of the main body (2) through threads, and the blade cooling and anti-blocking mechanism is arranged on the cone body (9).

2. The forging and milling machine as recited in claim 1, wherein the blade cooling and anti-blocking mechanism comprises a first nozzle (15), a fifth seal (16), a second nozzle (17) and a sixth seal (18), the first nozzle (15) is mounted on the upper portion of the cone (9) through threads, the fifth seal (16) is mounted on the outer ring of the first nozzle (15), the second nozzle (17) is mounted inside the lower end of the cone (9), and the sixth seal (18) is mounted on the outer ring of the second nozzle (17) and abuts against the inside of the lower end of the cone (9).

3. The forge mill according to claim 2, characterized in that said nozzles are three in correspondence with the position of the forge mill (11).

4. The milling forge according to claim 1, wherein a protective cap (19) is threadedly mounted to the lower portion of said cone (9).

5. The forge mill according to claim 1, characterized in that the forge mill (11) is fully rotatable into the body (2).