CN212177103U

CN212177103U - Compression type hydraulic setting packer

Info

Publication number: CN212177103U
Application number: CN202020335839.1U
Authority: CN
Inventors: 冯伟
Original assignee: Zhaoyuan Gold River Oil Equipment Technical Development Co ltd
Current assignee: Zhaoyuan Gold River Oil Equipment Technical Development Co ltd
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-12-18
Anticipated expiration: 2030-03-18

Abstract

The utility model discloses a compression hydraulic pressure setting packer belongs to the oil development field. Including center tube, top connection, outer core pipe, sealing device, setting device, locking device and lower clutch that falls, the top connection of center tube, the lower extreme connects the lower clutch, and outer core pipe has been cup jointed to the outside, and the outside of outer core pipe is from last to having set gradually sealing device, setting device and locking device down, and sealing device includes packing element, spacer ring, go up the adjustable ring, down the adjustable ring, and setting device includes catch, lock ring seat, lock cover, thread tooth, piston, sleeve pipe, adapter sleeve, setting shear pin, and locking device that falls includes steel ball, steel ball seat, deblocking pipe, steel ball drop hole, deblocking shear pin, the utility model discloses a sealing and the deblocking of packer packing element are realized to the mating reaction of setting device and locking device that falls, avoid the tight scheduling problem of packer sealing, and more reliable safety, economical and practical improves work efficiency.

Description

Compression type hydraulic setting packer

Technical Field

The utility model belongs to oil production equipment field specifically is a relate to a compression hydraulic pressure setting packer.

Background

Common packers are used for layering in oil extraction engineering and comprise a compression packer and an expansion packer, wherein the compression packer compresses a packing part by means of axial force, so that the outer diameter of the packing part is increased to realize sealing.

The setting principle of the compression hydraulic setting packer is as follows: pressurizing by an oil pipe, when the pressure rises to a certain value, shearing the piston shear pin, continuously pressurizing, sliding the hydraulic cylinder, and compressing the packing part to seal the annular space of the oil sleeve; when the sealing is unsealed, the unsealing shear pin is sheared by the friction force between the rubber sleeve and the sleeve, the piston sleeve descends, and the sealing part is unsealed.

Some can satisfy high pressure of current packer pressure and divide the needs of annotating separately, nevertheless because of the packer sits to seal the locking force and receives well depth and liquid pressure influence great, sits to seal the back and need provide powerful locking force, and automatic deblocking because of providing reliable setting force appears in some wells, in addition, if the diameter of deblocking shear pin is on the small side, if there is great interlayer pressure difference in the well when the shearing force is on the small side promptly, seals and separates the packing element and also can automatic deblocking. And if the diameter of the unsealing shear pin is larger, namely the shearing force is larger enough to overcome the friction force between the rubber cylinder and the casing after the rubber cylinder is sealed, the packer cannot be unsealed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a compression hydraulic pressure setting packer, the problem that the packer can not the deblocking or automatic deblocking can be solved in the use of this equipment to adopt the locking device and sit the sealed effect that sealing device dual function guaranteed sealing device, simultaneously can quick nimble deblocking reasonable in design.

In order to achieve the above object, the utility model provides a following technical scheme: a compression type hydraulic setting packer comprises a central tube, an upper joint, an outer core tube, a sealing device, a setting device, a locking device and a lower joint, wherein the upper end of the central tube is connected with the upper joint, the lower end of the central tube is connected with the lower joint, the outer core tube is sleeved outside the central tube, the lower end of the upper joint is the sealing device, the sealing device comprises a rubber cylinder, a spacer ring, an upper adjusting ring and a lower adjusting ring, the upper adjusting ring is installed between the upper end of the rubber cylinder and the upper joint, the lower adjusting ring is installed between the lower end of the rubber cylinder and the setting device, the spacer ring is installed between the rubber cylinder, and the setting device is arranged;

the setting device comprises a locking ring, a locking ring seat, a locking sleeve, thread teeth, a piston, a sleeve, a connecting sleeve and a setting shear pin, wherein the sealing device, the locking sleeve and the sleeve are sequentially arranged on the outer side of the outer core tube from top to bottom;

the locking device that falls includes steel ball, steel ball seat, unseals pipe, steel ball hole, shrinkage pool, unseal shear pin, and the steel ball seat is located the below space of piston, and the steel ball seat inboard is equipped with the shrinkage pool, is equipped with the steel ball hole on the outer core tube, and shrinkage pool and steel ball hole lock and steel ball are located the space that steel ball hole and shrinkage pool formed, under the outer core tube tip with still be equipped with the unseal pipe between the central tube, unseal and be the cavity between the pipe and the outer core tube.

Preferably, outer core pipe with deblocking union coupling department is equipped with the deblocking shear pin, deblocking pipe lower extreme position is equipped with the steel ball hole that falls, just the position in steel ball hole that falls can with steel ball hole position coincidence on the outer core pipe.

Preferably, the connecting sleeve and the piston can be completely buckled, and the steel ball seat can be buckled with the lower part of the piston in a shape.

Preferably, the inner parts of the upper joint and the lower joint are in threaded connection with the central pipe.

Preferably, a sealing ring is arranged between the inner wall of the piston and the outer wall of the outer core tube, a sealing ring is arranged between the outer wall of the piston and the inner wall of the sleeve, a sealing ring is arranged between the inner wall of the connecting sleeve and the outer wall of the outer core tube, and a sealing ring is arranged between the outer wall of the connecting sleeve and the inner wall of the sleeve. And the sealing ring is a rectangular sealing ring.

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

(1) the utility model provides a compression hydraulic pressure is set up packer goes upward through the piston and extrudes catch thread tooth and bites tight lock sleeve, guarantees that the packer sets up the compression state of back packing element flexible, convenient of deblocking simultaneously.

(2) The utility model discloses a steel ball locking device that falls has very strong stability, safe and reliable, and the deblocking shear pin that only needs minor diameter simultaneously can the quick deblocking, reduces the deblocking pulling force.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is an overall view of a compression type hydraulic setting packer of the present invention;

in the figure: 1. The sealing device comprises an upper connector, 2, a central pipe, 3, a lower connector, 4, an outer central pipe, 5, a sealing device, 6, a setting device, 7, a falling locking device, 8, an upper adjusting ring, 9, a rubber cylinder, 10, a spacer ring, 11, a lower adjusting ring, 12, a locking ring seat, 13, a locking ring, 14, a locking sleeve, 15, a thread tooth, 16, a sleeve, 17, a connecting sleeve, 18, a cylinder cavity, 19, a piston, 20, a setting shear pin, 21, a steel ball seat, 22, a concave hole, 23, a steel ball hole, 24, a steel ball falling hole, 25, a steel ball, 26, a deblocking pipe, 27, a deblocking shear pin, 28 and a cavity.

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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms such as "above … …", "above … …", "above … …", "bottom", and the like, may be used herein for ease of description to describe the spatial relationship of one device or feature to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a compression hydraulic pressure setting packer, includes main part such as center tube 2, top connection 1, outer core tube 4, sealing device 5, setting device 6, locking device 7 and lower clutch 3 that falls, 2 upper ends of center tube connect top connection 1, and lower clutch 3 is connected to the lower extreme, and outer core tube 4 has been cup jointed to 2 outsides of center tube, the lower extreme of top connection 1 is sealing device 5, and sealing device 5 includes packing element 9, spacer ring 10, go up adjustable ring 8, lower adjustable ring 11, installs adjustable ring 8 between packing element 9 upper end and the top connection 1, installs lower adjustable ring 11 between lower extreme and the setting device 6, install spacer ring 10 between packing element 9, the below of lower adjustable ring 11 is setting device 6.

The setting device 6 comprises a lock ring 13, a lock ring seat 12, a lock sleeve 14, a thread tooth 15, a piston 19, a sleeve 16, a connecting sleeve 17 and a setting shear pin 20, the sealing device 5, the lock sleeve 14 and the sleeve 16 are sequentially arranged on the outer side of the outer core tube 4 from top to bottom, the lock ring seat 12 is pinned in the lock sleeve 14, the lock ring seat 12 is fixed on the lower adjusting ring 11, a compression spring is arranged in the lock ring seat 12, the lock ring seat 12 is provided with a plurality of waist holes, the lock ring 13 can be movably sleeved in the annular groove at the waist hole part of the lock ring seat 12, the lock ring 13 is movably connected on the outer core tube 4, the lock ring 13 is an unsealed circle, thread teeth 15 which can be mutually engaged and locked are respectively arranged on the lock ring 13 and the lock sleeve 14, a connecting sleeve 17 is arranged below the lock ring 13, a piston 19 is arranged below the connecting sleeve 17, and a cylinder cavity 18 is arranged between the piston 19 and the connecting sleeve 17 and between the connecting sleeve 17 and the lock ring 13, and a setting shear pin 20 is arranged between the piston 19 and the sleeve 16.

Locking device 7 includes steel ball 25, steel ball seat 21, deblocking pipe 26, steel ball hole 23, shrinkage pool 22, deblocking shear pin 27, and steel ball seat 21 is located piston 19's below space, and steel ball seat 21 inboard is equipped with shrinkage pool 22, is equipped with steel ball hole 23 on the outer core tube 4, and shrinkage pool 22 and steel ball hole 23 are buckled mutually and steel ball 25 is located the space that steel ball hole 23 and shrinkage pool 22 formed, still be equipped with deblocking pipe 26 between tip and center tube 2 under the outer core tube 4, be cavity 28 between deblocking pipe 26 and the outer core tube 4, outer core tube 4 is equipped with deblocking shear pin 27 with deblocking pipe 26 junction, and deblocking pipe 26 lower extreme position is equipped with steel ball hole 24, and steel ball hole 24's position can with steel ball hole 23 position coincidence on the outer core tube 4.

In an embodiment, the connecting sleeve 17 and the piston 19 are completely engaged, and the ball seat 21 and the lower portion of the piston 19 are partially engaged.

Specifically, the insides of the upper joint 1 and the lower joint 3 are screwed with the center pipe 2.

Further, a sealing ring is arranged between the inner wall of the piston 19 and the outer wall of the outer core tube 4, a sealing ring is arranged between the outer wall of the piston 19 and the inner wall of the sleeve 16, a sealing ring is arranged between the inner wall of the connecting sleeve 17 and the outer wall of the outer core tube 4, and a sealing ring is arranged between the outer wall of the connecting sleeve 17 and the inner wall of the sleeve 16. And the sealing ring is a rectangular sealing ring.

When setting, the central tube 2 is pressurized to form a pressure difference between the oil sleeves, the thrust generated by the pressure difference can act on the piston 19, the sleeve 16 and the lock sleeve 14 are connected into a whole, the thrust generated by the piston 19 forms a shearing force between the sleeve 16 and the lower joint 3, the setting shear pin 20 is sheared off, the piston 19 is sleeved with the connecting sleeve 17 and continues to move upwards to push the lock ring 13, the lock ring 13 moves upwards along the outer core tube 4 to enter the lock sleeve 14 to be butted in the annular groove at the waist hole part of the lock ring seat 12, the lock ring seat 12 is compressed to further extrude the rubber cylinder 9 to realize sealing until the sealing is completed after the thread 15 on the lock ring 13 is completely meshed with the thread 15 on the lock sleeve 14, the compression is stopped, and the rubber cylinder 9 is locked. When the hydraulic action in the central pipe 2 is removed, the piston 19 moves downwards, the steel ball seat 21 pushes the steel ball 25, and the steel ball 25 is positioned in the steel ball hole 23 of the outer core pipe 4, so that the steel ball seat 21 is prevented from moving downwards, and the packer rubber barrel 9 is kept in a sealing state.

When deblocking, the rubber cylinder 9 and the setting device 6 are kept relatively static by friction force, the central tube 2 is lifted to drive the lower joint 3 to move upwards to contact the deblocking tube 26, the deblocking tube 26 and the outer core tube 4 generate shearing force on the deblocking shear pins 27, the deblocking shear pins 27 are sheared, the deblocking tube 26 moves upwards, the steel ball falling hole 24 on the deblocking tube 26 is overlapped with the steel ball hole 23 on the outer core tube 4, the steel ball 25 enters the steel ball falling hole 24 under the thrust action of the steel ball seat 21, the cavity 28 between the deblocking tube 26 and the outer core tube 4 is closed and provides upward thrust for the outer core tube 4, the spring in the locking ring seat 12 is compressed, the locking ring 13 is separated from the locking sleeve 14 to move downwards under the action of rebound force, meanwhile, the steel ball seat 12 continues to move downwards, finally, the compression force of the rubber cylinder 9 is released, and the rubber cylinder 9 is deblocked.

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. The utility model provides a compression hydraulic pressure setting packer, includes center tube (2), top connection (1), outer core tube (4), sealing device (5), sets up sealing device (6), locking device (7) and lower clutch (3), its characterized in that: the upper end of the central tube (2) is connected with an upper connector (1), the lower end of the central tube is connected with a lower connector (3), an outer core tube (4) is sleeved outside the central tube (2), the lower end of the upper connector (1) is provided with a sealing device (5), the sealing device (5) comprises a rubber cylinder (9), a spacer ring (10), an upper adjusting ring (8) and a lower adjusting ring (11), the upper adjusting ring (8) is installed between the upper end of the rubber cylinder (9) and the upper connector (1), the lower adjusting ring (11) is installed between the lower end of the rubber cylinder and a setting device (6), the spacer ring (10) is installed between the rubber cylinder (9), and the setting device (6) is arranged below the lower adjusting ring (11); the setting device (6) comprises a locking ring (13), a locking ring seat (12), a locking sleeve (14), thread teeth (15), a piston (19), a sleeve (16), a connecting sleeve (17) and a setting shear pin (20), the outer side of the outer core tube (4) is sequentially provided with a sealing device (5), the locking sleeve (14) and the sleeve (16) from top to bottom, the locking ring seat (12) is connected with the locking ring seat (14) in a pin mode, the locking ring seat (12) is fixed on the lower adjusting ring (11), a compression spring is arranged in the locking ring seat (12), a plurality of kidney holes are formed in the locking ring seat (12), the locking ring (13) is movably sleeved in an annular groove at the kidney hole part of the locking ring seat (12), the locking ring (13) is movably connected on the outer core tube (4), the locking ring (13) is in an unsealed circular shape, the locking ring (13) and the locking sleeve (14) are respectively provided with thread teeth (15) which can be mutually locked, a connecting sleeve (17) is arranged below the locking ring (13), a piston (19) is arranged below the connecting sleeve (17), a cylinder cavity (18) is formed between the piston (19) and the connecting sleeve (17) and between the connecting sleeve (17) and the locking ring (13), and a setting shear pin (20) is arranged between the piston (19) and the sleeve (16); locking device (7) fall includes steel ball (25), steel ball seat (21), deblocking pipe (26), steel ball hole (23), shrinkage pool (22), deblocking shear pin (27), steel ball seat (21) are located the below space of piston (19), steel ball seat (21) inboard is equipped with shrinkage pool (22), be equipped with steel ball hole (23) on outer core pipe (4), shrinkage pool (22) with steel ball hole (23) are buckled just mutually steel ball (25) are located steel ball hole (23) with in the space that shrinkage pool (22) formed, tip under outer core pipe (4) with still be equipped with between center tube (2) and unseal pipe (26), unseal and be cavity (28) between pipe (26) and outer core pipe (4).

2. The compression type hydraulic setting packer of claim 1, wherein: outer core pipe (4) with unseal pipe (26) junction is equipped with unseal shear pin (27), unseal pipe (26) lower extreme position is equipped with steel ball hole (24), just the position of steel ball hole (24) can with steel ball hole (23) position coincidence on outer core pipe (4).

3. The compression type hydraulic setting packer of claim 1, wherein: the connecting sleeve (17) and the piston (19) can be completely buckled in shape, and the steel ball seat (21) and the lower part of the piston (19) can be buckled in shape.

4. The compression type hydraulic setting packer of claim 1, wherein: the inner parts of the upper joint (1) and the lower joint (3) are in threaded connection with the central pipe (2).

5. The compression type hydraulic setting packer of claim 1, wherein: set up the sealing washer between piston (19) inner wall and outer core pipe (4) outer wall, set up the sealing washer between piston (19) outer wall and sleeve pipe (16) inner wall, set up the sealing washer between adapter sleeve (17) inner wall and outer core pipe (4) outer wall, set up the sealing washer between adapter sleeve (17) outer wall and sleeve pipe (16) inner wall, just the sealing washer is the rectangle sealing washer.