CN212985157U

CN212985157U - Packer with good sealing performance at joint

Info

Publication number: CN212985157U
Application number: CN202021948719.5U
Authority: CN
Inventors: 葛树杰
Original assignee: Sinopec Jianghan Oilfield Construction Engineering Co ltd
Current assignee: Sinopec Jianghan Oilfield Construction Engineering Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-04-16
Anticipated expiration: 2030-09-08

Abstract

The utility model relates to the technical field of petroleum engineering, in particular to a packer with good sealing performance at a joint, which can fasten and seal the joint of the packer to improve the whole sealing performance of the packer, has simple operation, is convenient for maintenance and disassembly to improve the convenience, and comprises a shell, a central tube and a rubber tube, wherein the circumference of the shell is provided with a circular groove, the inner side wall of the circular groove is fixedly connected with the outer side wall of the rubber tube, the inner side wall of the shell is fixedly connected with the outer side wall of the central tube, the inner side wall of the rubber tube is contacted with the outer side wall of the central tube, the top end of the central tube is provided with a sealing lug, the bottom end of the sealing lug is provided with a strip-shaped groove, the threaded hole is positioned at the outer side of the strip-shaped groove, the top end of the central tube extends to, the inside threaded connection of screwed pipe has the support column, and the bottom fixedly connected with fixed block of support column.

Description

Packer with good sealing performance at joint

Technical Field

The utility model relates to a petroleum engineering technical field specifically is a packer that kneck sealing performance is good.

Background

It is well known that the sum of reservoirs within the same hydrocarbon producing area under the control of a single geologic formation factor. A field may have one or more reservoirs. The packer is used as a main tool for layered oil extraction and is widely applied to oil extraction engineering.

The existing packer usually adopts a rubber cylinder to seal, and the rubber cylinder is sealed, so that the contact position of the rubber cylinder and the packer to be sealed in an inner cavity is loosened under the condition of long-time use, the sealing condition is unstable, the sealing effect is poor, and the sealing performance of the packer is reduced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a can fasten the kneck of packer and seal, improve the whole leakproofness of packer to easy operation is convenient for maintain and dismantle the good packer of kneck sealing performance who improves the convenience.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a packer with good sealing performance at a joint comprises a shell, a central tube and a rubber tube, wherein a circular groove is formed in the circumference of the shell, the inner side wall of the circular groove is fixedly connected with the outer side wall of the rubber tube, the inner side wall of the shell is fixedly connected with the outer side wall of the central tube, the inner side wall of the rubber tube is in contact with the outer side wall of the central tube, a sealing lug is installed at the top end of the central tube, a strip-shaped groove is formed in the bottom end of the sealing lug, a threaded hole is formed in the bottom end of the strip-shaped groove and located on the outer side of the strip-shaped groove, the top end of the central tube extends into the strip-shaped groove and is in threaded connection with the sealing lug, a spiral tube is fixedly connected to the top end inside the sealing lug, a supporting column is in threaded connection with the spiral tube, a, and four sealing assemblies are mounted at the bottom ends of the supporting plates.

Preferably, the sealing assembly comprises an electric push rod, the top end of the electric push rod is fixedly connected with the bottom end of the supporting plate, the bottom end of the electric push rod is rotatably connected with the base through a rotating shaft, the bottom end of the base is fixedly connected with a fan-shaped plate, and one end, close to the center of the central pipe, of the fan-shaped plate is fixedly connected with the fixing block through a shaft pin.

Preferably, one end of the fan-shaped plate far away from the center of the central tube is fixedly connected with a sealing block.

Preferably, the bottom ends of the fan-shaped plate and the fixed block are fixedly connected with a circular sealing sheet.

Preferably, the inner diameters of the strip-shaped groove and the central tube are consistent.

Preferably, the circular sealing sheet is made of rubber.

(III) advantageous effects

Compared with the prior art, the utility model provides a good packer of kneck sealing performance possesses following beneficial effect:

this packer that kneck sealing performance is good, setting through sealed lug can seal the kneck of packer, the top of center tube and the interior zonulae occludens of sealed lug, threaded connection's mode can be with comparatively convenient dismantlement and maintenance of sealed lug, the piston type operation about screwed pipe and support column set up can the rotation support column at the bar inslot, and then change the longitudinal position at seal assembly place, and convenient to detach and maintenance, the sector plate is in the state of relaxing at first, exert pressure downwards through electric putter and impel the sector plate, make sector plate and center tube inner wall in close contact with, the setting of sealed piece can further increase the friction, improve gasket steadiness and compactness, the sealed effect is further strengthened in circular setting, its structure is optimized more, the design is more reasonable.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a portion of the enlarged structure of FIG. 1;

FIG. 3 is a schematic view of a portion of the enlarged structure of FIG. 1 at B according to the present invention;

fig. 4 is a schematic view of the connection overlooking structure of the fan-shaped plate and the fixed block of the present invention.

In the figure: 1. a housing; 2. a central tube; 3. a rubber cylinder; 4. sealing the bump; 5. a threaded hole; 6. a solenoid; 7. a support pillar; 8. a fixed block; 9. a support plate; 10. a seal assembly; 11. an electric push rod; 12. a rotating shaft; 13. a base; 14. a fan-shaped plate; 15. a shaft pin; 16. a sealing block; 17. a circular seal piece.

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. 1-4, a packer with good sealing performance at a joint comprises a casing 1, a central tube 2 and a rubber tube 3, wherein a circular groove is formed on the circumference of the casing 1 to facilitate the fixing and placement of the rubber tube 3, the inner side wall of the circular groove is fixedly connected with the outer side wall of the rubber tube 3, the inner side wall of the casing 1 is fixedly connected with the outer side wall of the central tube 2 to effectively fix the central tube 2 and the casing 1, the inner side wall of the rubber tube 3 is in contact with the outer side wall of the central tube 2, a sealing bump 4 is mounted at the top end of the central tube 2 and is separated from the casing 1 to facilitate the better maintenance and disassembly of the device, the convenience is improved, a strip-shaped groove is formed at the bottom end of the sealing bump 4 to facilitate the placement of a sealing structure, a threaded hole 5 is formed at the bottom end of the strip-shaped groove, the sealing bump 4, the top of center tube 2 extends to the inside and the 4 threaded connection of sealing lug boss of strip-shaped groove, the inside top fixedly connected with solenoid 6 of sealing lug boss 4, the inside threaded connection of solenoid 6 has support column 7, can effectually fix sealing component 10 and can carry out the regulation of longitudinal position, the bottom fixedly connected with fixed block 8 of support column 7, can fix with fan-shaped board 14, and play effectual limiting displacement, four backup pads 9 of even fixedly connected with on support column 7's the circumference, play effectual fixed action to sealing component 10, the one end at support column 7 center and the inside wall sliding connection of center tube 2 are kept away from to four backup pads 9, sealing component 10 is all installed to four backup pads 9's bottom, avoid seal structure to appear laxly and the unstable condition of sealing condition to appear, and sealed effect is higher.

It should be further noted that the sealing assembly 10 includes an electric push rod 11, the top end of the electric push rod 11 is fixedly connected with the bottom end of the supporting plate 9 to achieve an effective fixing effect, the bottom end of the electric push rod 11 is rotatably connected with a base 13 through a rotating shaft 12, the bottom end of the base 13 is fixedly connected with a sector plate 14, one end of the sector plate 14 close to the center of the central tube 2 is fixedly connected with a fixed block 8 through a shaft pin 15, the electric push rod 11 can move up and down to drive the base 13 through the rotation of the rotating shaft 12 to drive the sector plate 14 to move up and down through the cooperation of the shaft pin 15, one end of the sector plate 14 far from the center of the central tube 2 is fixedly connected with a sealing block 16 which can be in close contact with the inner side wall of the central tube 2 to achieve an effective sealing effect and improve the sealing performance, the bottom ends of the sector plate 14, the whole sealing effect of the packer is prevented from being influenced, the reliability is improved, the inner diameter of the strip-shaped groove is consistent with that of the central pipe 2, the central pipe 2 can be conveniently inserted into the strip-shaped groove to be fixed and sealed, the circular sealing sheet 17 is made of rubber, the rubber is made of elastic materials, insulating materials, waterproof materials and air materials, and gaps can be effectively sealed.

In conclusion, when the packer with good sealing performance at the interface is used, the support column 7 is firstly rotated to vertically operate in a piston mode in the strip-shaped groove, the longitudinal position of the sealing assembly 10 is further changed, the sealing lug 4 is manually rotated to be fixed with the central tube 2 through the threaded hole 5 after adjustment, then the packer with good sealing performance at the interface is placed at a position required to be used, the top end of the central tube 2 is fully contacted with the top end of the strip-shaped groove, the top end of the central tube 2 is tightly combined with the inside of the sealing lug 4, the fan-shaped plate is in a relaxed state at the beginning, the fan-shaped plate 14 is pushed by the electric push rod 11 to apply pressure downwards, so that the fan-shaped plate 14 is tightly contacted with the inner wall of the central tube 2, after the position of the fan-shaped plate 14 is changed, the sealing block 16 is tightly contacted with the inner wall of the central tube 2, the interface is unsealed only by shortening the whole length of the electric push rod 11 and changing the position of the sector plate 14.

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 kneck sealing performance is good packer, includes casing (1), center tube (2) and packing element (3), its characterized in that: the sealing device is characterized in that a circular groove is formed in the circumference of the shell (1), the inner side wall of the circular groove is fixedly connected with the outer side wall of the rubber sleeve (3), the inner side wall of the shell (1) is fixedly connected with the outer side wall of the central tube (2), the inner side wall of the rubber sleeve (3) is contacted with the outer side wall of the central tube (2), a sealing convex block (4) is installed at the top end of the central tube (2), a strip-shaped groove is formed in the bottom end of the sealing convex block (4), a threaded hole (5) is formed in the bottom end of the strip-shaped groove, the threaded hole (5) is located in the outer side of the strip-shaped groove, the top end of the central tube (2) extends into the strip-shaped groove and is in threaded connection with the sealing convex block (4), a spiral tube (6) is fixedly connected to the top end of the sealing, even four backup pads (9) of fixedly connected with on the circumference of support column (7), the one end at support column (7) center and the inside wall sliding connection of center tube (2), four are kept away from to four backup pads (9) seal assembly (10) are all installed to the bottom of backup pad (9).

2. The packer with good sealing performance at the interface according to claim 1, wherein: seal assembly (10) include electric putter (11), the bottom fixed connection of the top of electric putter (11) and backup pad (9), the bottom of electric putter (11) rotate through pivot (12) and are connected with base (13), the bottom fixed connection of base (13) fan-shaped board (14), fan-shaped board (14) be close to the center tube (2) center one end pass through pivot (15) with fixed block (8) fixed connection.

3. The packer with good sealing performance at the interface according to claim 2, wherein: one end of the fan-shaped plate (14) far away from the center of the central tube (2) is fixedly connected with a sealing block (16).

4. The packer with good sealing performance at the interface according to claim 3, wherein: and the bottom ends of the fan-shaped plate (14) and the fixed block (8) are fixedly connected with a circular sealing sheet (17).

5. The packer with good sealing performance at the interface according to claim 4, wherein: the strip-shaped groove and the inner diameter of the central tube (2) are consistent in size.

6. The packer with good sealing performance at the interface according to claim 5, wherein: the circular sealing sheet (17) is made of rubber.