CN211144440U

CN211144440U - High-temperature high-pressure packer

Info

Publication number: CN211144440U
Application number: CN201922393708.9U
Authority: CN
Inventors: 田伟东
Original assignee: Chengdu Dewei Petroleum Technology Service Co ltd
Current assignee: Chengdu Dewei Petroleum Technology Service Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-07-31
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a high temperature high pressure packer, including top connection, last rubber tube seat, packing element, lower rubber tube seat, lower joint and center tube, the outside cover of packing element is equipped with two end gum covers and a middle gum cover, two tip of packing element have all cup jointed the guide ring, the packing element extends to the inner chamber of supreme rubber tube seat and has seted up annular notch, and the inside of notch is equipped with first O shape sealing washer. The utility model discloses in, the tip of packing element extends to the inner chamber of packing element seat and has cup jointed first O shape sealing washer, go up the packing element seat and inlay with the laminating department of guide ring and be equipped with second O shape sealing washer, and be equipped with the spacer ring between middle gum cover and the end gum cover, go up the packing element seat and the tip that the packing element was kept away from to the packing element seat has cup jointed third O shape sealing washer and O shape circle back of the body circle, this kind of unique seal structure can guarantee that the packer has reliable leakproofness under high temperature high pressure environment, be favorable to daily use more.

Description

High-temperature high-pressure packer

Technical Field

The utility model relates to a packer technical field especially relates to high temperature high pressure packer.

Background

The packer is provided with an elastic sealing element, and is used for sealing annular spaces between pipe columns with various sizes and well bores and between the pipe columns and isolating a production zone so as to control production (injection) liquid and protect a casing; after the setting, the upper layer pressure acts on the balance piston to push the rubber cylinder upwards, so that the deblocking pin is prevented from shearing force; when the oil extraction channel is unsealed, the unsealing pin is cut off by the friction force between the rubber sleeve and the sleeve, and the piston sleeve moves downwards to close the oil extraction channel.

The conventional packer has many disadvantages in the using process, for example, when the rubber sleeve of the conventional packer faces a high-temperature high-pressure environment, the sealing performance is greatly reduced, and the use of the packer is influenced, so that it is necessary to develop a convenient-to-use high-temperature high-pressure packer.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the high-temperature high-pressure packer is provided for solving the problem that the sealing performance of a rubber sleeve of the traditional packer is poor when the rubber sleeve faces a high-temperature high-pressure environment.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

high temperature high pressure packer, including top connection, last cylinder base, packing element, lower cylinder base, lower clutch and center tube, the outside cover of packing element is equipped with two end gum covers and a middle gum cover, two tip of packing element have all cup jointed the guide ring, the packing element extends to the inner chamber of last cylinder base and has seted up annular notch, and the inside of notch is equipped with first O shape sealing washer.

As a further description of the above technical solution:

and the outside of the rubber cylinder is positioned between the middle rubber sleeve and the two end rubber sleeves and is sleeved with a spacing ring.

As a further description of the above technical solution:

the tip of going up the adhesive cylinder seat has seted up the ring channel, and the inside of ring channel inlays and is equipped with second O shape sealing washer.

As a further description of the above technical solution:

and a bushing is sleeved outside the central tube and on one side of the rubber cylinder close to the lower rubber cylinder seat.

As a further description of the above technical solution:

and one sides of the upper rubber cylinder seat and the lower rubber cylinder seat, which are far away from the rubber cylinder, are respectively sleeved with a third O-shaped sealing ring and an O-shaped ring back ring.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model discloses in, the tip of packing element extends to the inner chamber of packing element seat and has cup jointed first O shape sealing washer, go up the packing element seat and inlay with the laminating department of guide ring and be equipped with second O shape sealing washer, and be equipped with the spacer ring between middle gum cover and the end gum cover, go up the packing element seat and the tip that the packing element was kept away from to the packing element seat has cup jointed third O shape sealing washer and O shape circle back of the body circle, this kind of unique seal structure can guarantee that the packer has reliable leakproofness under high temperature high pressure environment, be favorable to daily use more.

Drawings

FIG. 1 shows a schematic diagram of a packer construction provided in accordance with an embodiment of the present invention;

fig. 2 shows a schematic structural diagram of a glue cartridge provided according to an embodiment of the present invention;

fig. 3 is a schematic structural view illustrating an upper joint and an upper rubber cylinder seat provided according to an embodiment of the present invention;

illustration of the drawings:

1. an upper joint; 2. an upper rubber cylinder seat; 3. a rubber cylinder; 4. a lower rubber cylinder seat; 5. a lower joint; 6. a first O-ring seal; 7. a second O-ring seal; 8. end rubber sleeves; 9. a middle rubber sleeve; 10. a spacer ring; 11. a central tube; 12. a guide ring; 13. a bushing; 14. a third O-ring seal; 15. and an O-shaped ring back ring.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: high temperature high pressure packer, including top connection 1, last packing element seat 2, packing element 3, lower packing element seat 4, lower clutch 5 and center tube 11, the model of center tube 11 is: JS-2A, the packing element 3 is set up in the outside of the central tube 11, the outside cover of the packing element 3 is set up with two end packing element 8 and a middle packing element 9, two ends of the packing element 3 are all set up with the guide ring 12, the packing element 3 extends to the inner chamber of the packing element base 2 and is opened with the annular notch, the inside of the notch is equipped with the first O-shaped seal ring 6, the first O-shaped seal ring 6 is used for the second layer of the packing element 3 to seal.

Specifically, as shown in fig. 2, a spacer ring 10 is sleeved outside the rubber cylinder 3 and between the middle rubber sleeve 9 and the two end rubber sleeves 8, and the spacer ring 10 is used for isolating the middle rubber sleeve 9 from the end rubber sleeves 8.

Specifically, as shown in fig. 2, an annular groove is formed at an end of the upper rubber cylinder base 2, a second O-ring seal 7 is embedded inside the annular groove, and the second O-ring seal 7 is located at a joint of the guide ring 12 and the upper rubber cylinder base 2 and used for sealing a first layer of the rubber cylinder 3.

Specifically, as shown in fig. 2, a bushing 13 is sleeved outside the central tube 11 and on a side of the glue cartridge 3 close to the lower glue cartridge seat 4, and the bushing 13 is made of a teflon material and is used for sealing between the glue cartridge 3 and the central tube 11.

Specifically, as shown in fig. 3, a third O-ring 14 and an O-ring back ring 15 are respectively sleeved on the sides of the upper and lower cylinder bases 2 and 4 far away from the cylinder 3, and the O-ring back ring 15 is located on the side of the third O-ring 14 near the cylinder 3.

The working principle is as follows: first O shape sealing washer 6 and second O shape sealing washer 7 can guarantee to have better leakproofness between last cylinder base 2 and the packing element 3 under high temperature high pressure, and go up cylinder base 2 and top connection 1, all be equipped with third O shape sealing washer 14 and O shape circle back of the body circle 15 between lower cylinder base 4 and the lower clutch 5, play the effect to two end seal, this kind of unique seal structure can make the packer under high temperature high pressure environment, still have better leakproofness.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. High temperature high pressure packer, including top connection (1), last packing element seat (2), packing element (3), lower packing element seat (4), lower clutch (5) and center tube (11), its characterized in that, the outside cover of packing element (3) is equipped with two end gum covers (8) and middle gum cover (9) of one, guide ring (12) have all been cup jointed to two tip of packing element (3), packing element (3) extend to the inner chamber of supreme packing element seat (2) and seted up annular notch, and the inside of notch is equipped with first O shape sealing washer (6).

2. A high-temperature high-pressure packer as claimed in claim 1, characterized in that a spacer ring (10) is sleeved outside the rubber barrel (3) and between the middle rubber sleeve (9) and the two end rubber sleeves (8).

3. A high-temperature high-pressure packer as claimed in claim 2, wherein the end of the upper rubber barrel seat (2) is provided with an annular groove, and a second O-ring seal (7) is embedded in the annular groove.

4. A high-temperature and high-pressure packer as claimed in claim 3, characterized in that a bushing (13) is sleeved outside the central tube (11) and on the side of the packing element (3) close to the lower packing element seat (4).

5. A high-temperature high-pressure packer as claimed in claim 1, wherein the upper and lower rubber cylinder seats (2, 4) are sleeved with a third O-ring (14) and an O-ring back ring (15) on the side far away from the rubber cylinder (3).