Underground operation fishing socket

Abstract

The utility model discloses a downhole operation fishing socket which comprises a fishing socket body, four sector plates are arranged at the bottom of the fishing socket body, adjusting seats are arranged on the outer sides of the sector plates, connecting ports are formed in the adjusting seats, connecting bolts are arranged on the periphery of the bottom of the fishing socket body, and the connecting ports are movably connected with the connecting bolts. A connecting column is arranged at the top of the fishing barrel body, a mounting seat is arranged at the top of the connecting column, an adjusting assembly is arranged above the fishing barrel body and used for adjusting the four sector plates, and connecting rods are arranged on the periphery of the outer side of the fishing barrel body. The motor drives the threaded rod to rotate, so that the adjusting frame and the connecting rod ascend and descend, the connecting opening moves on the connecting bolt, namely, the bottom of the fishing barrel is closed through the sector plate, multiple objects are fished at the same time, and the fishing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of oil well fishing technology, specifically a downhole fishing barrel. Background Technology

[0002] Oil well fishing is an important technology in the petroleum industry, used to handle situations where downhole tools or tubing fail or accidentally fall into the well during oil well operations.

[0003] The existing Chinese patent publication number CN220365548U, entitled "A Well-Drilling Retrieval Cylinder," describes in its abstract that "This utility model discloses a well-drilling retrieval cylinder, including a cylinder body. A transmission assembly is installed inside the cylinder body, and a gripper is installed on the output end of the transmission assembly. An adjustment assembly is connected to the inner bottom of the gripper. The adjustment assembly includes: a fitting component disposed on the inner surface of the gripper, and a protective component disposed on the outer surface of the fitting component; and a connecting component disposed on the inner surface of the fitting component, which is connected to an external air supply device. The fitting component includes multiple air bladders, with double-sided adhesive between the ends of adjacent air bladders. The protective component is a rubber strip adhered to the outer surface of the air bladders, and the rubber strip is evenly spaced. Through the designed adjustment assembly, the contact surface of the gripper itself can be adjusted, thereby tightly fitting with various irregularly shaped objects, ensuring stable retrieval and preventing them from falling. Furthermore, the adjustment assembly itself has a certain strength and will not be broken by falling objects, ensuring its normal service life is not affected."

[0004] However, this technology uses a clamping method for retrieval, meaning that only one object can be retrieved at a time when retrieving any different object. This results in the retrieval tube needing to perform multiple retrievals when there are many objects to be retrieved in the oil well, which slows down the retrieval speed and affects the retrieval efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a downhole retrieval cylinder to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A downhole retrieval cylinder includes a retrieval cylinder body, four sector-shaped plates at the bottom of the retrieval cylinder body, an adjustment seat on the outer side of each sector-shaped plate, a connection port on the adjustment seat, connecting bolts around the bottom of the retrieval cylinder body, the connection ports being movably connected to the connecting bolts, a connecting column at the top of the retrieval cylinder body, a mounting seat at the top of the connecting column, an adjustment assembly above the retrieval cylinder body for adjusting the four sector-shaped plates, and connecting rods around the outer perimeter of the retrieval cylinder body.

[0008] In a preferred embodiment of this utility model, a filter screen is provided on the fan-shaped plate.

[0009] In a preferred embodiment of this utility model, a first interface is provided at the bottom of the connecting rod, and a first connector is provided on the outside of the adjusting seat, wherein the first connector is movably connected to the first interface.

[0010] In a preferred embodiment of the present invention, the adjusting component includes an adjusting frame, the inner side of which is provided with a screw hole, and the bottom of the inner side of the mounting base is provided with a threaded rod, the threaded rod being threadedly connected to the screw hole.

[0011] In a preferred embodiment of this utility model, a motor is provided on the adjustment frame, and the motor is connected to a threaded rod.

[0012] In a preferred embodiment of this utility model, a limiting port is provided on the outer side of the screw opening, and a limiting rod is provided on the outer side of the threaded rod, with the limiting port and the limiting rod being slidably connected.

[0013] In a preferred embodiment of this utility model, a second interface is provided at the top of the connecting rod, and a second connector is provided around the outer perimeter of the adjusting frame, with the second interface and the second connector being movably connected.

[0014] In a preferred embodiment of this utility model, a connecting seat is provided on the top of the mounting base.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0016] Beneficial effects: The retrieval cylinder covers the object to be retrieved. A motor drives a threaded rod to rotate, and a limiting rod limits the limiting port, thereby raising and lowering the adjusting frame and connecting rod. The connecting port moves on the connecting bolt, and the bottom of the retrieval cylinder is closed by a fan-shaped plate. The retrieved objects are all inside the retrieval cylinder. The retrieved objects are supported by a filter screen, and liquids such as oil and water fall through the filter screen, thus reducing weight. Finally, the retrieval cylinder is raised, which means that multiple objects can be retrieved at the same time, increasing retrieval efficiency.

[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 A schematic diagram of the main structure of a well-drilling salvage cylinder;

[0020] Figure 2 A schematic diagram of the bottom structure of a retrieval cylinder in a downhole operation retrieval cylinder;

[0021] Figure 3 A schematic diagram of a sector-shaped plate structure in a downhole retrieval cylinder;

[0022] Figure 4 This is a schematic diagram of the connection structure between the adjusting frame and the connecting rod in a well-operated salvage cylinder.

[0023] In the diagram: 1. Salvage cylinder; 11. Connecting column; 12. Connecting bolt; 13. Mounting base; 14. Limiting rod; 2. Sector plate; 21. Connecting port; 22. Filter screen; 23. Adjusting seat; 24. First connector; 3. Adjusting frame; 31. Threaded port; 32. Threaded rod; 33. Motor; 34. Second connector; 4. Connecting rod; 41. Limiting port; 42. First interface; 43. Second interface; 44. Connecting seat. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] Please refer to Figures 1-4 This utility model discloses a downhole retrieval cylinder, comprising a retrieval cylinder body 1, which is the main structure of the retrieval cylinder and is used to retrieve objects from the well. Four sector-shaped plates 2 are provided at the bottom of the retrieval cylinder body 1, forming the bottom structure and used to open and close the bottom of the retrieval cylinder body 1. An adjustment seat 23 is provided on the outer side of the sector-shaped plates 2, serving as an installation structure. The adjustment seat 23 has a connection port 21. Connecting bolts 12 are provided around the bottom of the retrieval cylinder body 1, with the connection port 21 movably connected to the connecting bolts 12. This allows the sector-shaped plates 2 to be installed at the bottom of the retrieval cylinder body 1 and to move on the connecting bolts 12 via the connection port 21, thus opening and closing the sector-shaped plates 2 at the bottom of the retrieval cylinder body 1. A filter screen 22 is provided on the sector-shaped plates 2, which supports the retrieved object and allows liquids such as oil and water to fall through the filter screen 22, thereby reducing weight.

[0026] A connecting column 11 is provided at the top of the salvage cylinder 1, and a mounting base 13 is provided at the top of the connecting column 11. The mounting base 13 is a mounting structure that connects the salvage cylinder 1 through the connecting column 11. A connecting seat 44 is provided at the top of the mounting base 13. The connecting seat 44 is a connecting structure used to connect the mounting base 13. An adjustment component is provided above the salvage cylinder 1. The adjustment component is used to adjust the four fan-shaped plates 2. A connecting rod 4 is provided around the outer perimeter of the salvage cylinder 1. The connecting rod 4 is a connecting structure used to connect the mounting base 13. The top is connected to the lifting cable and other lifting components used for salvage.

[0027] The adjustment assembly includes an adjustment frame 3, with a screw hole 31 on its inner side. A threaded rod 32 is provided on the bottom inner side of the mounting base 13. The threaded rod 32 is rotatably mounted and is threadedly connected to the screw hole 31. A motor 33 is mounted on the adjustment frame 3 and connected to the threaded rod 32. A limit port 41 is provided on the outer side of the screw hole 31, and a limit rod 14 is provided on the outer side of the threaded rod 32. The limit rod 14 is fixedly mounted, and the limit port 41 is slidably connected to the limit rod 14. A first interface 42 is provided at the bottom of the connecting rod 4, and a first connector 24 is provided on the outer side of the adjustment base 23. The first connector 24 is movably connected to the first interface 42. The connecting rod 4 has a second interface 43 at its top, and the adjusting frame 3 has a second connector 34 around its outer perimeter. The second interface 43 and the second connector 34 are movably connected. The first connector 24 is connected to the first interface 42 and is movable. The second interface 43 is connected to the second connector 34 and is movable. This allows the adjusting frame 3 to connect to the connecting rod 4, and the connecting rod 4 to connect to the adjusting seat 23. The motor 33 drives the threaded rod 32 to rotate. The limiting rod 14 limits the limiting port 41, thereby allowing the adjusting frame 3 and the connecting rod 4 to rise and fall. They also move on the connectors through the interfaces on the upper and lower sides, thereby allowing the sector plate 2 to open and close.

[0028] The working principle of this utility model is as follows: By opening the fan-shaped plate 2, the bottom of the retrieval cylinder 1 is opened, and the retrieval cylinder 1 is lowered into the oil well. The retrieval cylinder 1 covers the object to be retrieved. The motor 33 drives the threaded rod 32 to rotate, and the limiting rod 14 limits the limiting port 41, thereby raising and lowering the adjusting frame 3 and the connecting rod 4. The first connector 24 moves on the first interface 42, and the second interface 43 moves on the second connector 34, thereby moving the connecting port 21 on the connecting bolt 12. That is, the bottom of the retrieval cylinder 1 is closed by the fan-shaped plate 2, and the retrieved objects are all inside the retrieval cylinder 1. The retrieved objects are supported by the filter screen 22, and liquids such as oil and water fall through the filter screen 22, thereby reducing the weight. Then the retrieval cylinder 1 is raised, that is, multiple objects are retrieved at the same time, increasing the retrieval efficiency.

[0029] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A downhole retrieval cylinder, comprising a retrieval cylinder body (1), characterized in that: The bottom of the salvage cylinder (1) is provided with four fan-shaped plates (2), and an adjustment seat (23) is provided on the outside of the fan-shaped plates (2). A connection port (21) is provided on the adjustment seat (23). A connecting bolt (12) is provided around the bottom of the salvage cylinder (1). The connection port (21) is movably connected to the connecting bolt (12). A connecting column (11) is provided on the top of the salvage cylinder (1). A mounting seat (13) is provided on the top of the connecting column (11). An adjustment component is provided above the salvage cylinder (1). The adjustment component is used to adjust the four fan-shaped plates (2). A connecting rod (4) is provided around the outside of the salvage cylinder (1).

2. The downhole retrieval cylinder according to claim 1, characterized in that, A filter screen (22) is provided on the fan-shaped plate (2).

3. The downhole retrieval cylinder according to claim 1, characterized in that, The bottom of the connecting rod (4) is provided with a first interface (42), and the outside of the adjusting seat (23) is provided with a first connector (24), and the first connector (24) is movably connected to the first interface (42).

4. The downhole retrieval cylinder according to claim 1, characterized in that, The adjustment assembly includes an adjustment frame (3), the inner side of which is provided with a screw hole (31), and the bottom of the inner side of the mounting base (13) is provided with a threaded rod (32), which is threadedly connected to the screw hole (31).

5. A downhole retrieval cylinder according to claim 4, characterized in that, The adjusting frame (3) is equipped with a motor (33), and the motor (33) is connected to a threaded rod (32).

6. A downhole retrieval cylinder according to claim 5, characterized in that, A limiting port (41) is provided on the outside of the threaded opening (31), and a limiting rod (14) is provided on the outside of the threaded rod (32). The limiting port (41) and the limiting rod (14) are slidably connected.

7. A downhole retrieval cylinder according to claim 4, characterized in that, The connecting rod (4) is provided with a second interface (43) at the top, and the adjustment frame (3) is provided with a second connector (34) around its outer perimeter. The second interface (43) and the second connector (34) are movably connected.

8. A downhole retrieval cylinder according to claim 1, characterized in that, A connecting seat (44) is provided on the top of the mounting base (13).

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