Blowout prevention tool capable of being conveniently installed during blowout of lower oil pipe

Abstract

The utility model discloses a blowout prevention tool capable of being conveniently installed during blowout of a lower oil pipe, which comprises an upper body and a lower body, and the upper body and the lower body are connected through a ball bearing; a communicated center hole is formed in the center of the upper body and the center of the lower body, the cock ball valve penetrates through the side wall of the lower middle portion of the lower body and is arranged in the lower body, and the center of the cock ball valve coincides with the center of the center hole. A plurality of hand pressing rods are arranged in the middle of the upper body. When overflow blowout occurs in the process of descending an oil pipe, the blowout prevention tool can be quickly and conveniently mounted, so that a well in the oil pipe is closed, and the purpose of controlling blowout is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum well completion, in particular to a blowout prevention tool which can be portable and installed when a lowered oil pipe blows out. Background Art

[0002] During conventional oil and gas well completion, there is a well control risk when lowering the tubing. If the cock cannot be quickly connected to shut down the well, it may cause problems such as uncontrolled blowouts, resulting in serious consequences. At present, conventional blowout prevention tools are a combination of tubing buckles and drill pipe cocks, but this combination is long and heavy, and it is difficult to buckle and install when a large amount of oil and gas is sprayed out of the tubing. Therefore, it is of great significance to design a portable blowout prevention tool that can be installed when lowering the tubing for a blowout. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a portable blowout prevention tool that can be installed when the oil pipe is lowered for blowout. The tool can be quickly and conveniently installed to shut down the well in the oil pipe when overflow blowout occurs during the oil pipe lowering process, thereby achieving the purpose of controlling the blowout and effectively protecting the well control safety of the completion operation.

[0004] The present application is implemented by adopting the following technical solutions.

[0005] A blowout prevention tool that can be portable and installed when a lower oil pipe blows out, comprising an upper body and a lower body, the upper body and the lower body being connected by a ball bearing; a connecting center hole is formed in the center of the upper body and the lower body, a cock ball valve passes through the side wall of the lower middle part of the lower body and is placed in the lower body, the center of the cock ball valve coincides with the center of the center hole; a plurality of hand pressure rods are provided in the middle of the upper body.

[0006] Furthermore, the cock ball valve is positioned and fixed by a plurality of positioning modules.

[0007] Furthermore, a traction rope hole is provided at the end of the hand pressure rod.

[0008] Furthermore, a sealing ring is provided at the connection between the upper body and the lower body.

[0009] Furthermore, a male buckle 1502 is provided at the upper end of the upper body.

[0010] Furthermore, an oil pipe thread is provided at the lower end of the lower body.

[0011] This application has the following beneficial effects.

[0012] The utility model can be installed quickly and conveniently by multiple people in cooperation when overflow blowout occurs during the process of lowering the oil pipe, and then the well can be shut in the oil pipe to achieve the purpose of controlling the blowout, and can effectively protect the well control safety of the completion operation.

[0013] The utility model has the advantages of simple structure, easy maintenance and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 Sectional view along line AA;

[0016] Figure 3 yes Figure 1 Sectional view along line BB.

[0017] Among them, 1. 1502 union buckle; 2. upper body; 3. pin; 4. hand pressure rod; 5. traction rope hole; 6. sealing ring; 7. ball bearing; 8. lower body; 9. cock ball valve; 10. oil pipe thread; 11. positioning module; 12. center hole. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1-3 As shown, a blowout prevention tool that can be portable and installed when a tubing blowout occurs comprises an upper body 2 and a lower body 8.

[0020] The center of the upper body 2 is formed with a through center hole 12; the upper end of the upper body 2 is formed with a 1502 male union buckle 1 for connecting with a female union buckle; the middle of the outer wall of the upper body 2 is enlarged to form a mounting platform, and multiple hand pressure rods 4 are inserted from the side wall of the mounting platform, and the pins 3 are inserted perpendicular to the step surface of the mounting platform to fix the hand pressure rods 4. The tool of the present application is provided with multiple hand pressure rods 4, which can be used by multiple people. Furthermore, a traction rope hole 5 is formed at the end of the hand pressure rod 4 for connecting the traction rope.

[0021] The lower end of the upper body 2 forms an embedding groove inwardly, and the upper end of the lower body 8 is embedded in the embedding groove. The upper body 2 and the lower body 8 are connected by a ball bearing 7. Specifically, the outer ring of the ball bearing 7 is connected to the wall of the embedding groove, and the inner ring of the ball bearing 7 is connected to the outer wall of the lower body 8. The ball bearing 7 of the present application is combined in the tool and is closely matched with the tool. The pressure bearing of the ball bearing 7 is 5000psi. A sealing ring 6 is also provided between the wall of the embedding groove of the upper body 2 and the lower body 8. The sealing ring 6 is located above the ball bearing 7 to improve the sealing performance of the tool of the utility model.

[0022] A through center hole 12 is formed in the center of the lower body 8, and the center hole 12 of the lower body 8 is connected to the center hole 12 of the upper body 2. A hole is opened in the lower side wall of the lower body 8, and a cock ball valve 9 is inserted into the lower body 8 through the hole and placed in the lower body 8, and the center of the cock ball valve 9 coincides with the center of the center hole 12; positioning modules 11 are also inserted on both sides of the cock ball valve 9 in the opening, and the positioning modules 11 can prevent the cock ball valve 9 from shifting in position in the opening when rotating, and play a role in positioning and fixing. The outer side of the cock ball valve 9 is located on the outer wall surface of the lower body 8, and can be switched by a matching switch tool. The lower end of the lower body 8 of the present application is provided with an oil pipe thread 10 for convenient connection.

[0023] The method of using the utility model is as follows:

[0024] The blowout preventer tool of the present application connects the upper body 2 with the lower body 8 via a ball bearing 7. When an overflow blowout occurs during the process of lowering the oil pipe, the blowout preventer tool of the present application is installed as a whole on the oil pipe. The personnel use the hand pressure rod 4 and the end of the hand pressure rod 4 to connect the traction rope to fix the upper body 2 to ensure that the blowout preventer tool is not pushed out of the oil pipe by the overflow. Since the blowout preventer tool of the present application connects the upper body 2 with the lower body 8 via a ball bearing 7, the upper body 2 and the lower body 8 can rotate relative to each other. Therefore, when the upper body 2 is fixed, other personnel can buckle and fix the blowout preventer tool of the present application to the oil pipe by rotating the lower body 8. Therefore, the present application solves the problem that conventional blowout preventers are easily affected by overflow in the oil pipe, making the blowout preventer tool difficult to install, and achieves quick connection.

[0025] The blowout prevention tool of the present application can replace the existing tubing buckle and drill pipe cock, and can be quickly installed when an overflow blowout occurs during the tubing lowering process to shut down the well in the tubing, thereby achieving the purpose of controlling the blowout.

[0026] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A portable blowout prevention tool that can be installed when a tubing blowout occurs, characterized in that: The invention comprises an upper body (2) and a lower body (8), wherein the upper body (2) and the lower body (8) are connected via a ball bearing (7); a central hole (12) is formed in the center of the upper body (2) and the lower body (8); a cock ball valve (9) passes through the side wall of the lower middle part of the lower body (8) and is placed in the lower body (8); the center of the cock ball valve (9) coincides with the center of the central hole (12); a plurality of hand pressure rods (4) are provided in the middle of the upper body (2).

2. A portable blowout prevention tool for use during oil pipe blowout according to claim 1, characterized in that: The cock ball valve (9) is positioned and fixed by means of a plurality of positioning modules (11).

3. A portable blowout prevention tool for use during oil pipe blowout according to claim 1, characterized in that: A traction rope hole (5) is provided at the end of the hand pressure rod (4).

4. A portable blowout prevention tool for use during oil pipe blowout according to claim 1, characterized in that: A sealing ring (6) is provided at the connection between the upper body (2) and the lower body (8).

5. The portable blowout prevention tool for oil pipe run-down in a well blowout according to claim 1 is characterized by: The upper end of the upper body (2) is provided with a male buckle (1) 1502 .

6. The portable blowout prevention tool for oil pipe run-down in a well blowout according to claim 1, characterized in that: The lower end of the lower body (8) is provided with an oil pipe thread (10).

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