A blowout preventer assembly

Abstract

The utility model discloses a blowout preventer pipe assembly belongs to blowout preventer pipe technical field, including blowout preventer pipe main part, be provided with the heaven pulley and ground pulley on the blowout preventer pipe main part, the top of blowout preventer pipe main part is provided with the upper joint subassembly, be provided with the blowout preventer box on the upper joint subassembly, the lateral wall of blowout preventer pipe main part is provided with high pressure needle valve. The utility model discloses a blowout preventer box can seal cable, has increased the sealed cable function, the heaven pulley and ground pulley cooperation can carry out the direction, and the direction and angle of cable are convenient for adjusting, can be relieved simultaneously through the high pressure needle valve, greatly reduce the weight and size of equipment, reduced the difficulty of transportation and installation equipment, reduce the work cycle, have the advantages such as high pressure, light weight, small, simple, convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of blowout preventer technology, and in particular to a blowout preventer assembly. Background Technology

[0002] A blowout preventer (BOP) is an essential wellhead device used in oil well testing. Downhole instruments or tools are connected to a cable passing through the BOP and lowered into the well for testing. During testing, the cable moves up and down with the instruments or tools. Since the instruments or tools are in a high-pressure environment in the oil well, the lower end of the cable connecting the instruments or tools is in a high-pressure environment, while the upper end is in a normal-pressure environment. The wellhead BOP provides a working channel for the cable from normal pressure to high pressure, isolating the downhole high pressure from the surface normal pressure, preventing oil and water jetting, and reducing overflow.

[0003] The current structure of blowout preventers, such as Figure 7 As shown, from left to right, the components are: male blowout preventer connector, blowout preventer body, female blowout preventer connector, and union. Current blowout preventers do not have a sealing or securing function for the cable. Utility Model Content

[0004] The purpose of this invention is to provide a blowout preventer assembly that solves the problem that existing blowout preventers cannot seal and securely hold the cable.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model discloses a blowout preventer assembly, including a blowout preventer body, an upper pulley and a lower pulley on the blowout preventer body, an upper connector assembly at the top of the blowout preventer body, a blowout preventer box on the upper connector assembly, and a high-pressure needle valve on the side wall of the blowout preventer body.

[0006] Furthermore, the blowout preventer includes a sealing head body, which is disposed on top of the upper connector assembly. The top cavity of the sealing head body is provided with a lower sealing packing, an upper sealing packing, and a clamping copper post arranged sequentially from bottom to top. A locking cap is provided on the top of the sealing head body.

[0007] Furthermore, a sealing ring is provided between the sealing head body and the upper connector assembly.

[0008] Furthermore, the sealing ring is an O-ring.

[0009] Furthermore, the high-pressure needle valve is connected to the blowout preventer body via a needle valve connecting rod.

[0010] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This utility model can seal cables through a blowout preventer, thus increasing the cable sealing function; the upper and lower pulleys work together to guide the cable, making it easy to adjust the direction and angle of the cable; at the same time, the high-pressure needle valve can release pressure, greatly reducing the weight and size of the equipment, reducing the difficulty of transporting and installing the equipment, shortening the work cycle, and having the advantages of high pressure resistance, light weight, small size, simple accessories, and convenient operation. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the structure of the blowout preventer assembly of this utility model; Figure 2 This is a structural schematic diagram of the blowout preventer assembly of this utility model from another angle; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle; Figure 5 for Figure 2 Enlarged view of point C in the middle; Figure 6 This is a cross-sectional view of the spray guard of this utility model; Figure 7 This is a cross-sectional view of a blowout preventer in the prior art.

[0013] Explanation of reference numerals in the attached drawings: 1. Top pulley; 2. Blowout preventer body; 3. Bottom pulley; 4. Blowout preventer box; 4-1. Locking cap; 4-2. Compression copper column; 4-3. Upper sealing packing; 4-4. Lower sealing packing; 4-5. Sealing head body; 4-6. Sealing ring; 5. Upper connector assembly; 6. Needle valve connecting rod; 7. High-pressure needle valve. Detailed Implementation

[0014] like Figure 1-6As shown, a blowout preventer (BOP) assembly includes a BOP body 2. The BOP body 2 is equipped with a top pulley 1 and a bottom pulley 3, forming a top and bottom pulley assembly. The top pulley 1 is fixed to the top of the derrick and guides the vertical movement of the cable. The bottom pulley 3 is installed near the wellhead and cooperates with the BOP to adjust the horizontal angle of the cable. An upper connector assembly 5 is located at the top of the BOP body 2. The upper connector assembly 5 and the BOP body 2 are connected together by a common oilfield sealing tapered thread (TBG thread). A sleeve is connected to the mounting bracket of the top pulley 1. The upper part of the upper connector assembly 5 has a smaller diameter mounting portion, and the sleeve is directly fitted onto the mounting portion of the upper connector assembly 5. Under gravity, the top pulley 1 can... The blowout preventer (BOP) can be lifted upwards and disassembled. The ground pulley 3 is connected to the BOP body 2 by clamp bolts. The upper connector assembly 5 is equipped with a BOP box 4. A high-pressure needle valve 7 is installed on the side wall of the BOP body 2 through a needle valve connecting rod 6. The needle valve rod is made of ordinary pipe material, and the high-pressure needle valve is also a common 70MPA high-pressure needle valve. MAX needle valves are commonly used. When it is necessary to release the BOP pressure, the high-pressure needle valve 7 can be opened to release the pressure. The BOP body 2 is a high-strength alloy steel BOP with a smooth inner wall to reduce steel wire friction. The length can be customized according to the operation requirements. During operation, the cable extends upwards from the center of the BOP box 4, passes around the top pulley 1 and the ground pulley 3, and then extends straight out from below the ground pulley 3.

[0015] like Figure 6 As shown, the blowout preventer 4 includes a sealing head body 4-5, which is located on top of the upper connector assembly 5. Specifically, the sealing head body 4-5 and the upper connector assembly 5 are connected by a rectangular drive thread. A sealing ring 4-6 is provided between the sealing head body 4-5 and the upper connector assembly 5. The sealing ring 4-6 is an O-ring. The lower sealing packing 4-4, the upper sealing packing 4-3, and the clamping copper pillar 4-2 are installed sequentially from bottom to top in the top cavity of the sealing head body 4-5. A locking cap 4-1 is threadedly connected to the top of the sealing head body 4-5. The upper sealing packing 4-3 and the lower sealing packing 4-4 ​​are nitrile rubber sealing packings. By clamping the locking cap 4-1, the sealing packings can be clamped to complete the wire seal.

[0016] This blowout preventer is a simple blowout preventer. When it is necessary to seal the steel wire, the locking cap 4-1 can be tightened with a wrench. The locking cap 4-1 presses down on the copper post 4-2, and the copper post 4-2 presses down on the upper sealing packing 4-3 and the lower sealing packing 4-4, thereby securing the cable.

[0017] The working process of this utility model is as follows: When the wire is lowered into the well through the blowout preventer box 4, the wire can be tightened to complete the seal when it is necessary to seal the wire.

[0018] This utility model is used to seal wellhead pressure and prevent blowouts or fluid leaks, and is compatible with various types of cable operations; it has the appearance of a blowout preventer but can perform a series of operations on the well.

[0019] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A blowout preventer assembly, characterized in that: Includes a blowout preventer body (2), on which a top pulley (1) and a bottom pulley (3) are provided, an upper connector assembly (5) is provided at the top of the blowout preventer body (2), a blowout preventer box (4) is provided on the upper connector assembly (5), and a high-pressure needle valve (7) is provided on the side wall of the blowout preventer body (2).

2. The blowout preventer assembly according to claim 1, characterized in that: The blowout preventer (4) includes a sealing head body (4-5), which is located on the top of the upper connector assembly (5). The top cavity of the sealing head body (4-5) is provided with a lower sealing packing (4-4), an upper sealing packing (4-3), and a clamping copper pillar (4-2) from bottom to top. A locking cap (4-1) is provided on the top of the sealing head body (4-5).

3. The blowout preventer assembly according to claim 2, characterized in that: A sealing ring (4-6) is provided between the sealing head body (4-5) and the upper connector assembly (5).

4. The blowout preventer assembly according to claim 3, characterized in that: The sealing rings (4-6) are O-rings.

5. The blowout preventer assembly according to claim 1, characterized in that: The high-pressure needle valve (7) is connected to the blowout preventer body (2) via the needle valve connecting rod (6).

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