Shearing disc for soluble ball seat

Abstract

The utility model discloses a shearing disc for a soluble ball seat, connection between a releasing lever and the ball seat can be achieved by using the shearing disc and matching with a connecting assembly, and a plurality of open grooves and open holes are formed in a round disc body. After the releasing rod is pulled to enable the shearing disc to be sheared along the distance between the open groove and the open hole, the remaining parts are dispersed into a plurality of parts, so that drilling, grinding and flowback are facilitated, a large number of shearing pins do not need to be used for installation during installation, installation is more convenient and simpler, and improvement of working efficiency is facilitated. The disc comprises a round disc body, the round disc body is provided with an open hole, the open hole is formed in the center of the round disc body, the round disc body is provided with a plurality of open grooves, the open grooves are evenly distributed in the round disc body, and a preset distance is formed between the first surface in each open groove and the corresponding open hole.

Description

Technical Field

[0001] This application relates to the field of downhole fracturing technology in oilfields, and in particular to a shear disc for a soluble ball seat. Background Technology

[0002] In the downhole extraction process of oilfields, the release device is a commonly used device in the oil well field. The release device is a tool that separates the downhole tool into two parts in the well. Currently, the release method using a soluble ball seat is adopted. The release rod and the ball seat are generally fixed with shear pins. When the ball seat in the well dissolves, a large number of shear pins will remain in the well, which may affect subsequent oil well extraction and is not conducive to flowback. At the same time, the installation method of shear pins and soluble ball seats is relatively complicated. Each ball seat requires the installation of multiple shear pins, which is time-consuming and inefficient in field operations. In addition, the use of shear pins also carries the risk of improper installation, resulting in low reliability. Utility Model Content

[0003] This application provides a shearing disc for a soluble ball seat. Using the shearing disc and a connecting assembly, the connection between the release lever and the ball seat can be achieved. The circular disc body is provided with several slots and openings. When a release operation is required, pulling the release lever causes the shearing disc to be sheared along the connection between the slot and the circular disc body. The remaining parts are dispersed into multiple pieces, which facilitates drilling and backflow. Moreover, during installation, there is no need to use a large number of shearing pins, making installation more convenient and simple, improving work efficiency, and ensuring high installation reliability.

[0004] This application provides a shearing disk for a soluble ball seat, comprising: a circular disk body;

[0005] The circular disc has an opening located at its center. The circular disc also has several slots evenly distributed on it. A preset distance is provided between the first surface inside each slot and the opening. The opening is used for the release lever to slide through. The circular disc breaks between the preset distance and the slots under the release force applied by the release lever.

[0006] Optionally, the circular disc is configured as a soluble circular disc.

[0007] Optionally, all of the slots extend through the circular disk.

[0008] Optionally, the upper surface of the circular disk is configured as a horizontal surface.

[0009] Optionally, the lower surface of the circular disk is configured as a horizontal surface.

[0010] Optionally, the slot may also have a second surface and a third surface, which are arranged parallel to each other and are perpendicular to the first surface.

[0011] Optionally, a preset distance is provided between the third surface and the inner surface of the opening.

[0012] Optionally, the upper surface of the slot is flush with the upper surface of the circular disc.

[0013] Optionally, the lower surface of the slot is flush with the lower surface of the circular disc.

[0014] Optionally, a preset gap is provided between the second surface and the third surface.

[0015] Optionally, the circular disc is installed in the ball seat by means of adhesive or threaded connection.

[0016] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0017] The shearing disc for the soluble ball seat in this application is provided with a circular disc body; wherein, the circular disc body is provided with an opening located at the center of the circular disc body, and the circular disc body is provided with a plurality of slots evenly distributed on the circular disc body, and a preset distance is provided between the first surface inside the slot and the opening, the opening is used for the release lever to slide through, and the circular disc body breaks from the preset distance under the release force applied by the release lever.

[0018] Using a shearing disc, along with a shearing nut and an anti-reverse nut, the connection between the release lever and the ball seat can be achieved. The circular disc has several slots and openings. When the release operation is required, pulling the release lever causes the shearing nut to squeeze the shearing disc. Under pressure, the shearing disc is sheared along the connection between the slot and the circular disc. The remaining parts are dispersed into multiple pieces, which helps with drilling and backflow. Moreover, during installation, there is no need to use a large number of shearing pins, making installation more convenient and simple, improving work efficiency, and ensuring high installation reliability. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the shear disk of the soluble ball seat of this application;

[0020] Figure 2 This is a schematic diagram of the planar structure of the shear disk of the soluble ball seat in this application;

[0021] Figure 3 This is a cross-sectional view of the shear disk of the soluble ball seat of this application;

[0022] Figure 4This is a cross-sectional view showing the connection between the shear disk and the soluble ball seat in this application.

[0023] In the figure: 1. Circular disk; 2. Opening; 3. Groove; 31. First surface; 32. Second surface; 33. Third surface. Detailed Implementation

[0024] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0025] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0026] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0027] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the downhole extraction process of oilfields, the release device is a commonly used device in the oil well field. The release device is a tool that separates the downhole tool into two parts in the well. Currently, the release method using a soluble ball seat is adopted. The release rod and the ball seat are generally fixed with shear pins. When the ball seat in the well dissolves, a large number of shear pins will remain in the well, which may affect subsequent oil well extraction and is not conducive to flowback. At the same time, the installation method of shear pins and soluble ball seats is relatively complicated. Each ball seat requires the installation of multiple shear pins, which is time-consuming and inefficient in field operations.

[0030] Based on this, this application provides a shearing disc for a soluble ball seat. Using the shearing disc and a connecting component, the connection between the release lever and the ball seat can be realized. Specifically, the soluble shearing disc is connected to the ball seat by means of threads or adhesive. Several slots and holes are provided on the circular disc body. When a release operation is required, pulling the release lever causes the shearing disc to be cut along the distance between the slots 3 and the holes 2. The remaining parts are dispersed into multiple pieces, which facilitates drilling and backflow. Moreover, during installation, there is no need to use a large number of shearing pins, making installation more convenient and simple, helping to improve work efficiency, and ensuring high installation reliability.

[0031] Please see Figures 1 to 4 This application provides a shearing disc for a soluble ball seat, comprising: a circular disc body 1; an opening 2 is provided on the circular disc body 1, the opening 2 is located at the center of the circular disc body 1, a plurality of slots 3 are provided on the circular disc body 1, the plurality of slots 3 are evenly distributed on the circular disc body 1, a preset distance is provided between the first surface 31 inside the slot 3 and the opening 2, the opening 2 is used for the release lever to slide through, and the circular disc body 1 breaks from the preset distance under the release force applied by the release lever.

[0032] In this embodiment, the circular disc 1 can be either a soluble or insoluble disc. When it is a soluble disc, pulling the release lever causes the shearing disc to be sheared along the distance between the slot 3 and the opening 2. This distance is not specifically limited in this application and can be set according to actual conditions. The remaining components are dispersed into multiple parts and can be automatically dissolved, resulting in faster dissolution and facilitating drilling and backflow. When it is an insoluble disc, pulling the release lever causes the shearing disc to be sheared along the distance between the slot 3 and the opening 2. The remaining components are then automatically dispersed into multiple parts, which facilitates backflow.

[0033] A plurality of slots 3 are provided on the circular disk 1, and the slots 3 are equally spaced. The upper surface of the circular disk 1 is set as a horizontal surface, and the lower surface of the circular disk 1 is set as a horizontal surface, that is, the upper surface and the lower surface of the circular disk 1 are parallel to each other.

[0034] The slot 3 is further provided with a second surface 32 and a third surface 33, which are arranged parallel to each other and perpendicular to the first surface 31. A preset gap is provided between the second and third surfaces, the size of which is the size of the slot. When the shearing disc is sheared, the blocks between the two slots 3 on the shearing disc will fall off, forming multiple pieces. When it is set as a soluble circular disc 1, the dissolution speed can be accelerated, which helps with backflow. When it is set as a non-soluble circular disc 1, it decomposes into more pieces with smaller structures, which also helps with backflow.

[0035] The upper surface of the slot 3 is flush with the upper surface of the circular disc 1, the lower surface of the slot 3 is flush with the lower surface of the circular disc 1, and the inner surface of the opening 2 is set to a smooth surface.

[0036] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shear disc for a dissolvable ball seat, characterized by, Include: A circular disc body; The circular disc body is provided with an opening, which is arranged at the center of the circular disc body, and a plurality of slots are arranged on the circular disc body, which are uniformly distributed on the circular disc body, and the plurality of slots all penetrate the outer side of the circular disc body, and the first surface inside the slot and the opening are provided with a preset interval, the opening is used for the sliding of the release rod, and the circular disc body is broken between the preset interval and the slot under the action of the release force of the release rod.

2. The shear disc for a soluble ball seat of claim 1, wherein, The circular disc body is arranged as a soluble circular disc body.

3. The shear disc for a soluble ball seat of claim 1, wherein, The plurality of slots all penetrate the circular disc body.

4. The shear disc for a soluble ball seat of claim 1, wherein, The upper surface of the circular disc body is arranged as a horizontal surface.

5. The shear disc for a soluble ball seat of claim 4, wherein, The lower surface of the circular disc body is arranged as a horizontal surface.

6. The shear disc for a soluble ball seat of claim 1, wherein, The slot is also provided with a second surface and a third surface, which are arranged parallel to each other, and the second surface and the third surface are perpendicular to the first surface.

7. The shear disc for a soluble ball seat of claim 1, wherein, The upper surface of the slot is flush with the upper surface of the circular disc body.

8. The shear disc for a soluble ball seat of claim 1, wherein, The lower surface of the slot is flush with the lower surface of the circular disc body.

9. The shear disc for a soluble ball seat of claim 6, wherein, The second surface and the third surface are provided with a preset gap.

10. The shear disc for a soluble ball seat of claim 1, wherein, The circular disc body is installed in the ball seat by adhesion or threaded connection.

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