A connection device for oil blowout preventers

Abstract

This utility model provides a connection device for an oil blowout preventer (BOP), relating to the field of petroleum machinery. Its key technical features include a BOP body installed on an oil well, and a pulley mounted on the BOP body for use with a winch to pull downhole tools in and out of the well. A clamping assembly for securely mounting the pulley is detachably connected to the BOP body. The clamping assembly includes an upper clamping part, a lower clamping part, and a holding part. The holding part is located on the same side as the upper and lower clamping parts and holds them together to securely restrain them on the BOP body. The technical advantage is that it enables rapid installation of the BOP body and forms a stable mounting structure for the pulley, providing stable support and making the pulley more stable during use. The pulley can be used without installing it on a blowout preventer box or BOP.

Description

Technical Field

[0001] This utility model relates to the field of petroleum machinery technology, specifically to a petroleum blowout preventer connection device. Background Technology

[0002] Oil well blowout preventer (BOP) is a high-pressure pipe with quick-connect fittings used to accommodate the entry and exit of downhole tools under pressure, such as cap ropes, ropes, weight bars, slap cones, and other basic tool strings. The bottom of the BOP is placed on the well, with the lower part connected to the BOP valve and the upper part connected to the BOP box or BOP device. During use, a pulley needs to be installed and a winch rope is used to suspend, pull, and extend items such as testing instruments into the well for use.

[0003] However, current blowout preventer (BOP) connection devices directly install the BOP onto the oil well using components such as connecting flanges. The BOP is then directly fitted with pulleys on the BOP box or BOP device. Because the BOP lacks a support mechanism, the pulleys installed on the BOP box or BOP device are prone to causing wear. Furthermore, the pulleys have poor stability during installation, which can negatively impact the use of the BOP. Therefore, this application provides an oilfield BOP connection device to meet this requirement. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this utility model is to provide an oil blowout preventer connection device to solve the above-mentioned problems, so as to solve the technical problems in the prior art where the blowout preventer lacks a pulley support mechanism, the pulley has poor stability during installation, and it is easy to cause wear on the blowout preventer box or blowout preventer.

[0006] (II) Technical Solution

[0007] This utility model is achieved through the following technical solution: an oil blowout preventer connection device, comprising a blowout preventer body installed on an oil well, and a top pulley installed on the blowout preventer body for use with a winch to pull downhole tools in and out of the oil well.

[0008] The blowout preventer body is detachably connected to a clamping assembly for securely mounting the top pulley;

[0009] The clamping assembly includes:

[0010] The upper clamping part clamps the top of the blowout preventer body.

[0011] The lower clamping part is located at the bottom of the blowout preventer body near the top of the well.

[0012] The holding part is located on the same side as the upper clamping part and the lower clamping part, and holds the upper clamping part and the lower clamping part together to securely restrict them to the blowout preventer body;

[0013] The upper clamping part and the lower clamping part are both composed of a first clamping plate, a second clamping plate, and fasteners that combine the first clamping plate and the second clamping plate into one piece to generate clamping force to hold the blowout preventer body.

[0014] Preferably, the first clamping plate has a first lug integrally connected to both sides, and the second clamping plate has a second lug integrally connected to both sides. The first and second lugs of the upper clamping part are provided with brackets for mounting the pulley. Fasteners are used to fasten the first and second lugs together so that the first clamping plate and the second clamping plate are relatively close to each other to generate clamping force to hold the blowout preventer body.

[0015] Preferably, the first clamp and the second clamp are both semi-circular in shape when viewed from above, and the first clamp and the second clamp are symmetrically arranged on both sides of the blowout preventer body.

[0016] Preferably, a rubber pad is fitted on the outer surface of the blowout preventer body, and the outer wall of the rubber pad is in close contact with the inner walls of the first clamping plate and the second clamping plate.

[0017] Preferably, the holding part consists of two sets of upper fixed platforms installed on the outer wall of the upper clamping part, two sets of lower fixed platforms installed on the outer wall of the lower clamping part, and a connector that integrates the upper fixed platforms and the lower fixed platforms. The upper fixed platforms and the lower fixed platforms are installed vertically opposite each other, and the top of each upper fixed platform and the lower fixed platform is provided with a screw hole for the connector to be screwed in.

[0018] Preferably, a sleeve is movably fitted onto the outer surface of the connector at a position between the bottom of the upper fixed platform and the top of the lower fixed platform. This sleeve can limit the distance between the upper and lower fixed platforms to prevent contact wear between the upper clamping part and the lower clamping part when they are pulled together.

[0019] Preferably, the connector is a fastening screw, the outer surface of which is screwed with a movable nut at the bottom of the lower fixed platform, and the fixed nut integrally connected to the top of the fastening screw is located on the top surface of the upper fixed platform.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, this utility model provides an oil blowout preventer connection device, which has the following advantages:

[0022] This invention enables the rapid installation of the blowout preventer (BOP) body via its upper and lower clamping parts. The pulling part firmly holds the upper and lower clamping parts together to form a stable pulley mounting structure, providing the oil blowout preventer connection device with a stable support function for the pulley. This significantly improves the overall stability of the upper and lower clamping parts during use, making the pulley more stable. The pulley can be used without installing it on the BOP box or BOP, effectively protecting the BOP box or BOP and facilitating the widespread use of this oil blowout preventer connection device. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural view of the oil blowout preventer connection device of this utility model in use.

[0024] Figure 2 This is a schematic diagram of the combined structure of the upper clamping part and the lower clamping part of this utility model;

[0025] Figure 3 This is a three-dimensional view of the upper clamping part of this utility model;

[0026] Figure 4 This is a schematic diagram of the fastening screw and sleeve combination structure of this utility model.

[0027] In the picture:

[0028] 1. Main body of the blowout preventer;

[0029] 2. Upper clamping part; 201. First clamping plate; 2011. First lug; 202. Second clamping plate; 2021. Second lug; 203. Fastener;

[0030] 3. Lower clamping part; 4. Top pulley; 5. Upper fixed platform; 501. Screw hole; 6. Lower fixed platform; 7. Fastening screw; 8. Moving nut; 9. Rubber pad; 10. Sleeve. Detailed Implementation

[0031] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] This utility model embodiment provides a technical solution:

[0033] Please see Figure 1-4A blowout preventer (BOP) connection device includes a BOP body 1 installed on an oil well and a pulley 4 mounted on the BOP body 1 for use with a winch to pull downhole tools in and out of the oil well. A clamping assembly for securely mounting the pulley 4 is detachably connected to the BOP body 1. The clamping assembly includes an upper clamping part 2, a lower clamping part 3, and a holding part. The upper clamping part 2 clamps the top end of the BOP body 1; the lower clamping part 3 clamps the bottom of the BOP body 1 near the oil well. The holding part is located above the well; it is positioned on the same side as the upper clamping part 2 and the lower clamping part 3 and holds the upper clamping part 2 and the lower clamping part 3 together to securely restrict them to the blowout preventer body 1. The upper clamping part 2 and the lower clamping part 3 mentioned are both composed of a first clamping plate 201, a second clamping plate 202 and a fastener 203 that combines the first clamping plate 201 and the second clamping plate 202 together to generate clamping force to hold the blowout preventer body 1; wherein, the fastener 203 is, but is not limited to, bolts or screws.

[0034] Furthermore, both sides of the first clamping plate 201 are integrally connected with a first lug 2011, and both sides of the second clamping plate 202 are integrally connected with a second lug 2021. The first lug 2011 and the second lug 2021 of the upper clamping part 2 are provided with brackets for mounting the pulley 4. Fasteners 203 are used to secure the first lug 2011 and the second lug 2021 together so that the first clamping plate 201 and the second clamping plate 202 are relatively close together to generate clamping force to hold the blowout preventer body 1. The top view of both the first clamping plate 201 and the second clamping plate 202 is semi-circular, and they are symmetrically arranged on both sides of the blowout preventer body 1. The front view of both the first lug 2011 and the second lug 2021 is rectangular.

[0035] Furthermore, a rubber pad 9 is fitted on the outer surface of the blowout preventer body 1. The outer wall of the rubber pad 9 is in close contact with the inner wall of the first clamping plate 201 and the second clamping plate 202. The use of the rubber pad 9 can effectively protect the blowout preventer body 1, reduce the wear caused to the blowout preventer body 1 when the upper clamping part 2 or the lower clamping part 3 is used, and thus extend the service life of the blowout preventer body 1.

[0036] Furthermore, the holding part consists of two sets of upper fixed platforms 5 installed on the outer wall of the upper clamping part 2, two sets of lower fixed platforms 6 installed on the outer wall of the lower clamping part 3, and a connector that integrates the upper fixed platforms 5 and the lower fixed platforms 6. The upper fixed platforms 5 and the lower fixed platforms 6 are installed vertically opposite each other. The top of the upper fixed platforms 5 and the lower fixed platforms 6 are provided with screw holes 501 for the connector to be screwed in. A sleeve 10 is movably fitted on the outer surface of the connector between the bottom of the upper fixed platform 5 and the top of the lower fixed platform 6. The sleeve 10 can limit the distance between the upper fixed platform 5 and the lower fixed platform 6 to prevent contact wear between the upper clamping part 2 and the lower clamping part 3 when they are held together. The connector uses, but is not limited to, fastening screws 7. A movable nut 8 is screwed onto the outer surface of the fastening screw 7 at the bottom of the lower fixed platform 6, and the fixed nut integrated at the top of the fastening screw 7 is located on the top surface of the upper fixed platform 5. The diameter of the fastening screw 7 does not exceed the inner diameter of the sleeve 10.

[0037] In practical use, the working principle of this utility model is as follows:

[0038] In use, the lower clamping part 3 is clamped below the blowout preventer body 1 above the oil well, and the blowout preventer box or blowout preventer is installed on the top of the blowout preventer body 1. Then, the upper clamping part 2 is clamped on the outer surface of the top of the blowout preventer body 1. The upper fixed platform 5 and the lower fixed platform 6 are pulled together by the fastening screw 7. With the setting of the sleeve 10, the upper clamping part 2 and the lower clamping part 3 can be brought close together when the upper fixed platform 5 and the lower fixed platform 6 are pulled together. When the bottom of the upper fixed platform 5 is attached to the top of the sleeve 10 and the top surface of the lower fixed platform 6 is attached to the bottom of the sleeve 10, the sleeve 10 is used to determine the working distance between the upper clamping part 2 and the lower clamping part 3. When the clamping part assembly is more stable, the contact wear between the upper clamping part 2 and the lower clamping part 3 can be effectively avoided when the oil blowout preventer connection device is used, thereby extending the service life of the upper clamping part 2 and the lower clamping part 3, and thus clamping on the blowout preventer body 1 for a long time.

[0039] The upper clamping part 2 and the lower clamping part 3 are used in the same way. Taking the upper clamping part 2 as an example: first, the first clamping plate 201 and the second clamping plate 202 of the upper clamping part 2 are arranged on the outer wall of the blowout preventer body 1. Then, the first lug 2011 and the second lug 2021 are fastened together using fasteners 203. At this time, the first lug 2011 and the second lug 2021 on both sides of the upper clamping part 2 are fastened together by fasteners 203, so that the first clamping plate 201 and the second clamping plate 202 are tightly attached to each other. When the first clamping plate 201 and the second clamping plate 202 are tightly attached, a clamping force is generated and the body is tightly clamped to the blowout preventer body 1.

[0040] When the upper clamping part 2 and the lower clamping part 3 are clamped on the blowout preventer body 1, that is, the upper fixed platform 5 and the lower fixed platform 6 are perpendicular to each other, the upper fixed platform 5 and the lower fixed platform 6 are connected together by the fastening screw 7. The sleeve 10 determines the working distance between the upper clamping part 2 and the lower clamping part 3. The upper clamping part 2 and the lower clamping part 3 are stably installed on the blowout preventer body 1, which extends the service life of the upper clamping part 2 and the lower clamping part 3, thereby providing a stable installation support position for the pulley 4, which facilitates the pulling of downhole tools into and out of the oil well by the cooperation of the pulley 4, the winch and the rope.

[0041] In summary, this utility model enables the oil blowout preventer connection device to have a stable installation and support function for the pulley 4, which greatly improves the overall stability of the upper clamping part 2 and the lower clamping part 3 during use, making the pulley 4 more stable during use. The pulley 4 can be used without installing it on the blowout preventer box or blowout preventer, solving the technical problems of the lack of a pulley 4 support mechanism on the blowout preventer, poor stability of the pulley 4 during installation, and easy wear on the blowout preventer box or blowout preventer in the prior art.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A blowout preventer (BOP) connection device, comprising a BOP body (1) installed on an oil well, and a top pulley (4) disposed on the BOP body (1) for cooperating with a winch to pull downhole tools in and out of the oil well, characterized in that: The blowout preventer body (1) is detachably connected to a clamping assembly for securely mounting the top pulley (4); The clamping assembly includes: The upper clamping part (2) is clamped at the top of the blowout preventer body (1); The lower clamping part (3) is clamped at the bottom of the blowout preventer body (1) near the top of the well. The holding part is located on the same side of the upper clamping part (2) and the lower clamping part (3) and holds the upper clamping part (2) and the lower clamping part (3) together to securely restrict them to the blowout preventer body (1); The upper clamping part (2) and the lower clamping part (3) are both composed of a first clamping plate (201), a second clamping plate (202), and a fastener (203) that combines the first clamping plate (201) and the second clamping plate (202) into one unit to generate clamping force to clamp the blowout preventer body (1).

2. The oil blowout preventer connection device according to claim 1, characterized in that: The first clamping plate (201) has a first lug (2011) integrally connected to both sides, and the second clamping plate (202) has a second lug (2021) integrally connected to both sides. The first lug (2011) and the second lug (2021) of the upper clamping part (2) are provided with brackets for the installation of the pulley (4). The fastener (203) is used to fasten the first lug (2011) and the second lug (2021) together so that the first clamping plate (201) and the second clamping plate (202) are relatively close to each other to generate clamping force to hold the blowout preventer body (1).

3. The blowout preventer coupling device of claim 1, wherein: The first clamp (201) and the second clamp (202) are both semi-circular in shape when viewed from above. The first clamp (201) and the second clamp (202) are symmetrically arranged on both sides of the blowout preventer body (1).

4. The blowout preventer coupling device of claim 1, wherein: The outer surface of the blowout preventer body (1) is fitted with a rubber pad (9), the outer wall of which is in close contact with the inner walls of the first clamping plate (201) and the second clamping plate (202).

5. The blowout preventer coupling device of claim 1, wherein: The holding part consists of two sets of upper fixed platforms (5) installed on the outer wall of the upper clamping part (2), two sets of lower fixed platforms (6) installed on the outer wall of the lower clamping part (3), and a connector that integrates the upper fixed platforms (5) and the lower fixed platforms (6). The upper fixed platforms (5) and the lower fixed platforms (6) are installed vertically opposite each other. The top of the upper fixed platforms (5) and the lower fixed platforms (6) are provided with screw holes (501) for the connector to be screwed in.

6. The blowout preventer coupling device of claim 5, wherein: The outer surface of the connector is fitted with a sleeve (10) located between the bottom of the upper fixed platform (5) and the top of the lower fixed platform (6). The sleeve (10) can limit the distance between the upper fixed platform (5) and the lower fixed platform (6) to prevent contact wear between the upper clamping part (2) and the lower clamping part (3) when they are pulled together.

7. The blowout preventer coupling device of claim 5, wherein: The connector uses a fastening screw (7), and a movable nut (8) is screwed onto the outer surface of the fastening screw (7) at the bottom of the lower fixed platform (6), and the fixed nut integrated at the top of the fastening screw (7) is located on the top surface of the upper fixed platform (5).

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