Self-adsorption slip

Abstract

The utility model discloses a self-adsorption type slip, which comprises a slip body (4) and a strong magnet (6), and is characterized in that the slip body (4) is provided with a strong magnet groove (5), and the strong magnet (6) is arranged in the strong magnet groove (5). According to the self-adsorption type slip, the problem of adsorption of the slip is well solved through strong magnetic adsorption and extrusion of the elastic piece.

Description

Technical Field

[0001] The utility model belongs to the field of energy operations such as oil and gas, and specifically relates to a slip for a packer, in particular to a self-adsorption slip for a packer using slip shrapnel. Background Art

[0002] The packer is a commonly used tool in the field of oil and gas and other energy operations. The slip is a component that makes the packer stuck on the well wall. After the packer is unsealed, the slip is attached to the packer mandrel through the squeezing effect of the shrapnel. Once the shrapnel fails, the slip cannot be pressed on the mandrel, and the slip will be stretched outward, causing it to be stuck when passing through the casing coupling or a place with steps, making it impossible to remove the tool. In addition, there are factors such as corrosion in the operating well, especially when working with highly corrosive liquids such as acid, especially for shrapnel that is only a few tenths of a millimeter, it will be damaged very quickly.

[0003] At present, the selection of shrapnel is mainly acid-resistant materials or surface anti-corrosion treatment, but due to the objective condition of the thickness of the shrapnel itself, the effect is not particularly ideal.

[0004] In view of the above problems, the utility model provides a self-adsorption slip, which is provided with a strong magnet for adsorbing the slip. The strong magnet and the spring provide double protection for the slip attachment during operation, thus effectively solving the slip attachment problem. Utility Model Content

[0005] The utility model aims to provide a self-adsorption type slip so as to solve the problem of slip adhesion.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A self-adsorption slip comprises a slip body and a strong magnet, characterized in that a strong magnet groove is provided on the slip body, the strong magnet is placed in the strong magnet groove, and the strong magnet groove is arranged on the back side of the slip body, i.e., the attachment surface.

[0008] There is an adhesive layer between the strong magnet slot and the strong magnet. Adhesive layers are respectively arranged in the strong magnet slot and on the strong magnet. When the strong magnet is placed in the strong magnet slot, the adhesive layer firmly adheres it in the slot; and the adhesive layer fills the gap between the strong magnet and the strong magnet slot after being squeezed, which can also prevent corrosive liquid from corroding the strong magnet.

[0009] A sealing O-ring groove is arranged in the strong magnet groove, in which a sealing O-ring is placed. The sealing O-ring clamps the strong magnet and also prevents the corrosive liquid from corroding the strong magnet.

[0010] The number of the strong magnetic slots is at least 4, preferably 4-6, and they can be evenly arranged on the slips according to the structure of the slip body.

[0011] The self-adsorption slip of the utility model can be well attached to the core shaft of the packer by the strong adsorption of the strong magnet during the operation of the packer, and further provide a stronger guarantee for the attachment of the slip on the basis of the squeezing effect of the spring piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1a It is a schematic front view of a self-adsorbing slip structure according to one embodiment of the utility model.

[0013] Figure 1b It is a schematic rear view of a self-adsorbing slip structure according to one embodiment of the utility model.

[0014] Figure 1c It is along Figure 1b Cross-sectional view in the direction of AA.

[0015] Figure 2 It is a three-dimensional schematic diagram of a self-adsorption slip structure according to an embodiment of the utility model.

[0016] Figure 3a It is a schematic front view of a packer structure using the slips of the utility model.

[0017] Figure 3b It is a partial enlarged cross-sectional view of the circled portion indicated by mark A in 3a.

[0018] Figure 4 is a schematic diagram of the packer with the slips opened.

[0019] Description of Reference Numerals

[0020] 1. Slips; 2. Shrapnel; 3. Packer mandrel; 4. Slip body; 5. Strong magnet slot; 6. Strong magnet; 7. Sealing O-ring. DETAILED DESCRIPTION

[0021] The device of the utility model is further described in detail below through embodiments in conjunction with the accompanying drawings.

[0022] Embodiment 1:

[0023] A self-adsorption slip comprises a slip body 4 and a strong magnet 6. The back of the slip body 4 is provided with four strong magnet grooves 5, in which the strong magnet 6 is placed. A sealing O-ring groove is provided in the strong magnet groove 5, in which a sealing O-ring 7 is placed to seal the strong magnet 6. An adhesive layer is respectively provided in the strong magnet groove 5 and on the strong magnet 6.

[0024] The installation and operation process of the device of the utility model is as follows:

[0025] Place the sealing O-ring 7 into the sealing O-ring groove, apply adhesive layers in the strong magnet groove 5 of the slip body 4 and on the strong magnet 6, and then place the strong magnet 6 into the strong magnet groove 5; the adhesive layer is squeezed and fills the gap between the strong magnet groove 5 and the strong magnet 6, so that the strong magnet groove 5 and the strong magnet 6 are tightly combined and firmly bonded together, and at the same time, corrosive liquid can be prevented from entering and corroding the strong magnet. Thus, the installation of the self-adsorption slip is completed.

[0026] After the self-adsorption slips are installed, other accessories of the packer are installed to complete the assembly of the packer. During the process of the packer entering the well, the spring piece 2 squeezes the self-adsorption slips, and the strong magnet 6 also forces the self-adsorption slips to be adsorbed on the packer mandrel 3. The two forces make the self-adsorption slips well attached to the mandrel 3. Even if the spring piece 2 fails, the strong magnet 6 still plays the role of making the slips attached to the mandrel 3, which doubles the guarantee of the attachment of the slips.

Claims

1. A self-adsorption slip, comprising a slip body (4) and a strong magnet (6), characterized in that: A strong magnet groove (5) is provided on the slip body (4), and the strong magnet (6) is placed in the strong magnet groove (5).

2. The self-adsorption slip according to claim 1, characterized in that: The strong magnetic groove (5) is arranged on the back side of the slip body (4).

3. The self-adsorption slip according to claim 1, characterized in that: An adhesive layer is provided between the strong magnet groove (5) and the strong magnet (6).

4. The self-adsorption slip according to claim 3, characterized in that: An adhesive layer is provided in the strong magnet groove (5), and an adhesive layer is provided on the strong magnet (6).

5. The self-adsorption slip according to claim 1, characterized in that: A sealing O-ring groove is arranged in the strong magnetic groove (5).

6. The self-adsorption slip according to claim 5, characterized in that: A sealing O-ring (7) is placed in the sealing O-ring groove, and the sealing O-ring (7) clamps the strong magnet (6).

7. The self-adsorption slip according to claim 1, characterized in that: The number of the strong magnet slots (5) is at least 4.

8. The self-adsorption slip according to claim 7, characterized in that: The number of the strong magnetic slots (5) is 4-6.

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