CN216714348U

CN216714348U - Packer shoulder pad of formation tester

Info

Publication number: CN216714348U
Application number: CN202220356856.2U
Authority: CN
Inventors: 刘中敏; 张卫兵; 张驰; 范春涛; 刘伟
Original assignee: Nanyang Tianda Tongxing Oil Technology Co ltd
Current assignee: Nanyang Tianda Tongxing Oil Technology Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-06-10
Anticipated expiration: 2032-02-22

Abstract

The utility model discloses a packer shoulder pad of a formation tester, which comprises shoulder pads, wherein a sealing ring is arranged between the shoulder pads, each shoulder pad comprises a top surface and a bottom surface, the top surface is provided with a central hole penetrating through the top surface, the edge of the top surface is formed by outwards inclining and then vertically extending to form an inclined surface section and a vertical section, and the top surface and the inclined surface section enclose a containing space; the shoulder pad is inside to be located the inside a plurality of hollow chambeies that are equipped with of inclined plane section, and hollow intracavity portion rotates and is connected with the dead lever, and the dead lever outside rotates and is connected with the arc pole, arc pole one end fixedly connected with arc piece, and the arc pole other end passes the curved sealing washer of shoulder pad. Through the design there is the arc pole, when stuffing in the shoulder pad through the sealing washer inside, can press the sealing washer through the arc pole other end and press close to with the tubular column for it is sealed more between sealing washer and the tubular column.

Description

Packer shoulder pad of formation tester

Technical Field

The utility model relates to a packer shoulder pad, in particular to a packer shoulder pad of a formation tester.

Background

In the oil production process, a packer is needed to be used for carrying out layered isolation underground. The packer comprises a steel body, a sealing cylinder and a control part. The sealing cartridge is one of the important components of a packer. Existing sealing cartridges are made of high temperature resistant elastomeric materials. After the sealing barrel is sealed, the pressure borne by the sealing barrel can rise along with the rise of the temperature, and if the pressure of the sealing barrel is not released in time, shoulder protrusions are generated on the sealing barrel, even the shoulder protrusions are too large, so that the sealing barrel is cracked.

Chinese patent discloses a shoulder protector, a sealing barrel and a packer (No. CN111535774A), the technology of the patent can be used for the shoulder protector, the sealing barrel and the packer, and the slope section in the side wall of the shoulder protector can reduce the area of the top surface, so that the shoulder protrusion of a sealing ring can be prevented or reduced; the vertical section cladding of lateral wall can avoid producing the shoulder at the sealing washer at vertical section at the surface of sealing washer, nevertheless, only retrains the sealing washer through the indent platform in this application, and restraint ability is relatively weak. Accordingly, one skilled in the art provides a formation tester packer shoulder pad to address the problems set forth in the background above.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a packer shoulder protector of a formation tester, which comprises shoulder protectors, wherein a sealing ring is arranged between the shoulder protectors, each shoulder protector comprises a top surface and a vertical section, the top surface is provided with a central hole penetrating through the top surface, the edge of the top surface is formed by outwards inclining and then vertically extending to form an inclined surface section and a vertical section, and the top surface and the inclined surface section enclose a containing space;

the shoulder pad is inside to be located the inside a plurality of hollow chambeies that are equipped with of inclined plane section, and hollow intracavity portion rotates and is connected with the dead lever, and the dead lever outside rotates and is connected with the arc pole, arc pole one end fixedly connected with arc piece, and the arc pole other end passes the curved sealing washer of shoulder pad.

Preferably: the two ends of the sealing ring are located in the accommodating space.

Preferably: one end of the arc-shaped block can penetrate through the inclined plane section and is positioned inside the shoulder protector.

Preferably: and a through hole corresponding to the central hole is formed in the sealing ring.

Preferably: the edge of the central hole of the top surface extends inwards to form an inner boss.

The utility model has the technical effects and advantages that:

through the design, the arc-shaped rod is arranged, when the sealing ring is plugged into the shoulder protector, the sealing ring can be pressed to be close to the tubular column through the other end of the arc-shaped rod, and therefore the sealing ring and the tubular column are sealed.

Drawings

FIG. 1 is a schematic illustration of a configuration of an embodiment of a formation tester packer shoulder provided by an embodiment of the present application;

FIG. 2 is a schematic illustration of the internal structure of a shoulder pad of an embodiment of a formation tester packer shoulder provided in accordance with an embodiment of the present application;

in the figure: 1. shoulder protection; 2. a seal ring;

11. a central bore; 12. an inner boss; 13. a top surface; 14. a slope section; 15. a vertical section; 16. a hollow cavity; 17. an arc-shaped block; 18. fixing the rod; 19. an arc-shaped rod.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Example 1

Referring to fig. 1-2, the present embodiment provides a packer shoulder pad for a formation tester, including a shoulder pad 1, a seal ring 2 is disposed between the shoulder pads 1, the shoulder pad 1 includes a top surface 13 having a central hole 11 penetrating the top surface 13, the edge of the top surface 13 is inclined outward and then extends vertically to form an inclined surface section 14 and a vertical section 15, the top surface 13 and the inclined surface section 14 enclose an accommodation space, and two ends of the seal ring 2 are located inside the accommodation space;

the inner side of the shoulder protector 1 is provided with a plurality of hollow cavities 16 inside the inclined plane section 14, the hollow cavities 16 are rotatably connected with fixing rods 18, the outer sides of the fixing rods 18 are rotatably connected with arc-shaped rods 19, one ends of the arc-shaped rods 19 are fixedly connected with arc-shaped blocks 17, one ends of the arc-shaped blocks 17 can penetrate through the inclined plane section 14 and are located inside the shoulder protector 1, the other ends of the arc-shaped rods 19 penetrate through the shoulder protector 1 and bend towards the sealing ring 2, through holes corresponding to the central hole 11 are formed inside the sealing ring 2, and the edge of the central hole 11 of the top surface 13 extends inwards to form an inner boss 12.

When the device is used, the inclined surface section 14 is used for reducing the area of the top surface 13, so that under the same force applied to the top surface 13, the pressure applied to the top surface 13 is increased, and thus, smaller pressure can be applied to the sealing ring 2, thereby preventing or reducing the shoulder protrusion of the sealing ring 2. The vertical section 15 is used for coating the outer surface of the sealing ring 2, so that under the same pressure, the position is not easy to generate shoulder projection, and the shoulder projection generated by the sealing ring 2 at the vertical section 15 is avoided.

Meanwhile, the sealing ring 2 presses the arc block 17 to enter the hollow cavity 16 through the arc rod 19, the arc block 17 drives the arc rod 19 to rotate, the arc rod 19 rotates to enable the other end of the arc rod 19 to press the inside of the sealing ring 2 to be close to the tubular column, the sealing ring 2 is enabled to be close to the tubular column, and the inner boss 12 is configured to be limited on the inner surface of the sealing ring 2 in the compression deformation process of the sealing ring 2, so that the inner surface of the sealing ring 2 is easily sealed with the tubular column in the compression process, and the inner leakage condition caused by the fact that the sealing ring 2 is not sealed with the tubular column is avoided.

It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are not specifically illustrated or described, but are instead contemplated to be practiced in the art by those skilled in the art.

Claims

1. The packer shoulder pad of the formation tester is characterized by comprising shoulder pads (1), wherein a sealing ring (2) is arranged between the shoulder pads (1), each shoulder pad (1) comprises a top surface (13) which is provided with a central hole (11) penetrating through the top surface (13), the edge of the top surface (13) is formed by outwards inclining and then vertically extending to form an inclined surface section (14) and a vertical section (15), and the top surface (13) and the inclined surface section (14) enclose a containing space;

the novel shoulder pad is characterized in that a plurality of hollow cavities (16) are arranged inside the inclined plane section (14) in the shoulder pad (1), fixing rods (18) are rotatably connected inside the hollow cavities (16), arc-shaped rods (19) are rotatably connected to the outer sides of the fixing rods (18), arc-shaped blocks (17) are fixedly connected to one ends of the arc-shaped rods (19), and the other ends of the arc-shaped rods (19) penetrate through the shoulder pad (1) and bend towards the sealing rings (2).

2. A formation tester packer shoulder pad according to claim 1, characterized in that the sealing ring (2) is located inside the accommodation space at both ends.

3. A formation tester packer shoulder pad according to claim 1, characterized in that the arc-shaped block (17) is located inside the shoulder pad (1) at one end through the slope section (14).

4. A formation tester packer shoulder pad according to claim 1, characterized in that the sealing ring (2) is internally provided with a through hole corresponding to the central hole (11).

5. A formation tester packer shoulder pad according to claim 1, characterised in that the edge of the central bore (11) of the top face (13) extends inwardly forming an inner ledge (12).