A blowout preventer hanger device with secondary fall protection function and hoisting structure

Abstract

The utility model discloses a kind of secondary anti-falling protection function's blowout preventer lifting clamp device and hoisting structure. Lifting clamp device includes base, the base is equipped with the placement hole for placing blowout preventer;The base is equipped with hoisting ear group and secondary anti-falling ear group;The base is also equipped with circumferential slide-assisting component. Hoisting structure includes blowout preventer hoisting device, carousel beam and the blowout preventer lifting clamp device as described above;The hoisting ear group is connected with blowout preventer hoisting device, and the secondary anti-falling ear group is connected with carousel beam. The present scheme is applicable to the blowout preventer hoisting of various drilling machines, simultaneously with secondary anti-falling protection function, blowout preventer rotating function, personnel safety and equipment safety are ensured in wellhead operation.

Description

Technical Field

[0001] This utility model relates to a blowout preventer hoisting device and hoisting structure with secondary fall protection function, belonging to the field of oil drilling rig technology. Background Technology

[0002] Blowout preventers (BOPs) are critical safety equipment in oil drilling operations, and their installation requires extremely high technical expertise to ensure safety, efficiency, and compliance with regulations. A BOP hoisting device and fixed hoisting guide rails are installed under the drilling rig base to lift the BOP from the well site surface to the wellhead center for connection and installation with the wellhead casing head.

[0003] However, a single drilling operation often requires the use of multiple blowout preventer (BOP) combinations, and the lifting positions of the BOPs vary significantly depending on the combination. This results in frequent changes in the vertical distance between the hook of the BOP lifting device and the lifting point of the BOP. If the vertical distance between them becomes too large, it becomes difficult for the hook to properly connect with the lifting point. Forcing the lifting can not only cause the lifting wire rope to have an excessive angle of inclination, but may also cause the wire rope to directly rub and bend against the BOP body, significantly reducing the rated lifting load capacity of the lifting device, leading to lifting failure and causing serious equipment damage and personnel casualties. At the same time, traditional BOP lifting clamps often use a single lifting structure and lack redundant protection mechanisms. If a critical lifting component is accidentally damaged, the BOP is highly susceptible to falling. Furthermore, traditional devices are difficult to adjust flexibly to different derrick base opening sizes and BOP specifications, severely restricting operational efficiency.

[0004] Therefore, in order to avoid the above-mentioned hoisting safety accidents, it is urgent to design a blowout preventer hoisting device and hoisting structure with secondary fall protection function. Utility Model Content

[0005] The purpose of this utility model is to provide a blowout preventer (BOP) hoisting device and hoisting structure with secondary fall prevention protection function, which is suitable for the hoisting of BOPs on various drilling rigs. It also has secondary fall prevention protection function and BOP rotation function, ensuring the safety of personnel and equipment during wellhead operations.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A blowout preventer (BOP) hoisting device with secondary fall protection function includes a base, the base having a placement hole for placing the BOP; the base is provided with a hoisting lug assembly and a secondary fall protection lug assembly; the base is also provided with a circumferential sliding aid assembly.

[0008] Alternatively, the base may include two symmetrical semi-circular ring hangers, which are detachably connected to each other as a ring by fasteners, forming the placement hole.

[0009] Optionally, the lifting lug assembly includes two sets of lifting lug plates symmetrically arranged along the axis of the placement hole. Each set of lifting lug plates includes two pieces, and the two lifting lug plates are respectively located on two semi-circular ring hangers. When the semi-circular ring hangers are connected, each set of lifting lug plates is correspondingly merged.

[0010] Alternatively, the secondary anti-fall ear assembly includes at least two, and an even number, anti-fall ear plates, which are symmetrically distributed on the semi-circular hanging bracket, and are symmetrically arranged along the axis of the placement hole between every two anti-fall ear plates.

[0011] Optionally, the circumferential sliding aid component includes a bottom sliding aid component, which includes a plurality of first rollers or first bearings arranged circumferentially along the base, the rotation axis of the first rollers or first bearings extending radially along the placement hole; a step portion is provided above the base along the base, and the bottom sliding aid component is located on the step portion.

[0012] Alternatively, the circumferential sliding aid assembly may include a side sliding aid assembly, which includes a plurality of second rollers or second bearings arranged circumferentially, the rotation axis of the second rollers or second bearings extending axially along the placement hole.

[0013] Alternatively, the bottom sliding aid and the side sliding aid are alternately arranged along the circumference of the base.

[0014] A blowout preventer (BOP) hoisting structure with secondary fall protection function includes a BOP hoisting device (6), a turntable beam (7), and a BOP hoisting clamp device as described above; the hoisting lug (2) is connected to the BOP hoisting device (6), and the secondary fall protection lug (3) is connected to the turntable beam (7).

[0015] Alternatively, the lifting lugs can be connected to the hook of the blowout preventer lifting device via a first shackle.

[0016] Alternatively, the secondary anti-fall ear assembly can be connected to the turntable beam via a second shackle and a sling.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. The blowout preventer lifting clamp device and lifting structure with secondary fall protection function provided by this utility model not only solves the problem of excessive inclination angle or friction bending of the lifting wire rope, but also adds secondary fall protection function of the blowout preventer. That is, in the event of failure of the main lifting tool, there is also an auxiliary lifting tool for secondary lifting protection.

[0019] 2. The blowout preventer lifting device and lifting structure with secondary fall protection function provided by this utility model adds the rotation function of the blowout preventer. When the blowout preventer is too large to pass through the base opening, it can be rotated to make it pass through the base space smoothly. Attached Figure Description

[0020] Figure 1 This is a top view of a blowout preventer hanger device with secondary fall protection.

[0021] Figure 2 yes Figure 1 A schematic diagram of the AA section.

[0022] Figure 3 This is a front view of a blowout preventer hanger device with secondary fall protection function.

[0023] Figure 4 This is a top view of a semi-circular hanging clamp.

[0024] Figure 5 This is a schematic diagram of a blowout preventer hoisting structure with secondary fall protection function.

[0025] Figure 6 This is a schematic diagram of the blowout preventer hoisting structure opening through the derrick base.

[0026] The markings in the diagram are: 1-base, 11-placement hole, 12-step section, 13-semi-circular ring-shaped hanging clip, 2-lifting ear assembly, 21-lifting ear plate, 3-secondary anti-fall ear assembly, 31-anti-fall ear plate, 4-circumferential sliding aid assembly, 41-bottom sliding aid assembly, 411-first bearing, 42-side sliding aid assembly, 421-second roller, 5-blowout preventer, 6-blowout preventer lifting device, 61-hook, 7-turntable beam, 8-first shackle, 9-second shackle, 10-lifting rope. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0029] A blowout preventer clamp device with secondary fall protection function, such as Figures 1-5 As shown, it includes a base 1, which has a placement hole 11 for placing a blowout preventer 5; the base 1 is provided with a hoisting lug 2 and a secondary anti-fall lug 3; the base 1 is also provided with a circumferential sliding aid component 4.

[0030] Specifically, the base 1 serves as an overall support, and the placement hole 11 within the base 1 can securely support the blowout preventer 5 body. The lifting lugs 2 bear the conventional lifting load, while the independently configured secondary fall arrestor lugs 3 form a redundant protection system. When the lifting lugs 2 fail unexpectedly, the secondary fall arrestor lugs 3 can immediately intervene to bear the load, forming a physical fall protection barrier. This dual-insurance design significantly improves safety under extreme working conditions, effectively preventing falls caused by single-point failure. In the event of a sudden breakage of the lifting wire rope, the secondary fall arrestor design can protect the blowout preventer 5 from falling, thus providing fall protection. The circumferential sliding component 4 allows the device to move circumferentially in the horizontal plane, a feature that significantly improves the adaptability of the lifting system to different combinations of blowout preventers 5. Figure 5 and Figure 6 When the width of the blowout preventer 5 is greater than the opening of the derrick base, the operator can quickly adjust the circumferential sliding component 4 to allow the blowout preventer 5 to rotate at any angle relative to the lifting device around the central axis of the lifting device, thus satisfying the opening size of various derrick bases and enabling the blowout preventer 5 to pass smoothly through the opening of the derrick base.

[0031] In another specific embodiment, the base 1 includes two symmetrical semi-circular ring hangers 13. The two semi-circular ring hangers 13 are detachably connected to form a ring by fasteners, thus forming the placement hole 11. During installation, it is not necessary to fully insert the blowout preventer 5; simply closing and locking the two semi-circular rings around the equipment body completes the assembly. The placement hole 11 on the inner side of the semi-circular ring precisely matches the outer contour of the blowout preventer 5, providing stable radial positioning and reducing local pressure by increasing the contact area, thus preventing deformation of the equipment surface due to lifting pressure.

[0032] In another specific implementation, the lifting lug assembly 2 includes two sets of lifting lug plates 21 symmetrically arranged along the axis of the placement hole 11. Each set of lifting lug plates 21 includes two pieces, and the two pieces of lifting lug plates 21 are respectively located on two semi-circular ring lifting clamps 13. When the semi-circular ring lifting clamps 13 are connected, the corresponding lifting lug plates 21 are merged. The lug plates are symmetrically arranged along the axis of the placement hole 11, so that the lifting force is always transmitted through the geometric center of the blowout preventer 5, effectively avoiding the risk of overturning caused by eccentric loads and improving the stability of the lifting process. Each set of lug plates is supported by one piece from each of the two semi-circular ring lifting clamps 13. When the two semi-circular rings are closed and connected, the corresponding lug plates are merged to form a complete lifting fulcrum. When the lifting wire rope is tensioned, the force flow is evenly distributed to the entire annular base 1 through the two side lug plates, and then transmitted to the blowout preventer 5 body, forming an optimized force transmission path.

[0033] In another specific implementation, the secondary anti-fall ear assembly 3 includes at least two, and an even number, anti-fall ear plates 31. These anti-fall ear plates 31 are symmetrically distributed on the semi-circular hanging bracket 13, and are symmetrically arranged along the axis of the placement hole 11 between every two anti-fall ear plates 31. This ensures a stable force couple balance under sudden load conditions, preventing the blowout preventer 5 from tilting and falling due to unilateral failure.

[0034] In another specific embodiment, the circumferential sliding aid component 4 includes a bottom sliding aid component 41. The bottom sliding aid component 41 includes a plurality of first rollers or first bearings 411 arranged circumferentially along the base 1. The rotation axis of the first rollers or first bearings 411 extends radially along the placement hole 11. A step portion 12 is provided above the base 1, and the bottom sliding aid component 41 is located on the step portion 12. The step portion 12 provides a precise accommodating space for the blowout preventer 5 body, and its inner diameter is matched with the outer diameter of the blowout preventer 5 to ensure that the equipment remains stably aligned during hoisting. The special layout of the first rollers or first bearings 411 with their shafts oriented radially along the placement hole 11 allows the working surface of the rollers to form tangential contact with the outer wall of the blowout preventer 5, providing low-resistance circumferential sliding guidance for the blowout preventer 5 during hoisting. The circumferentially evenly distributed design of the rollers or bearings forms a continuous support ring, which, while bearing the weight of the blowout preventer 5, disperses the load pressure through multi-point contact to prevent local deformation. Furthermore, the first roller or the first bearing 411 is mounted in the base 1 via the first support member.

[0035] In another specific embodiment, the circumferential sliding aid component 4 includes a side sliding aid component 42, which includes a plurality of second rollers 421 or second bearings arranged circumferentially. The rotation axis of the second rollers 421 or second bearings extends axially along the placement hole 11. Through the special orientation of the rotating shaft along the axial direction of the placement hole 11, a perpendicular contact surface is formed with the side wall of the blowout preventer 5, providing lateral guidance and stable support during circumferential sliding of the equipment. The rotation direction of the rollers or bearings is orthogonal to the movement trajectory of the blowout preventer 5, effectively suppressing axial movement of the equipment during movement and significantly reducing lateral adjustment resistance by replacing traditional sliding friction with rolling friction. Each axial roller provides local normal support, and its circumferentially uniform distribution forms a continuous guiding interface, ensuring that the cylindrical surface of the blowout preventer 5 always maintains uniform contact with the roller array. Furthermore, the second rollers 421 or second bearings are mounted within the base 1 via a second support member.

[0036] In another specific implementation, the bottom sliding aid component 41 and the side sliding aid component 42 are alternately arranged circumferentially along the base 1. The bottom rollers realize the main circumferential movement, while the side rollers constrain the axial degree of freedom. The combination of the two ensures that the equipment adjustment process is always under control. The low friction characteristics and self-centering capability make the fine adjustment of the position of the heavy-duty blowout preventer 5 more convenient and efficient, providing double protection for safe hoisting under complex working conditions.

[0037] A blowout preventer (BOP) hoisting structure with secondary fall protection includes a BOP hoisting device 6, a turntable beam 7, and a BOP lifting clamp device as described above. The hoisting lug 2 is connected to the BOP hoisting device 6, and the secondary fall protection lug 3 is connected to the turntable beam 7. The rigid connection between the hoisting lug 2 and the BOP hoisting device 6 forms the main load transfer path, ensuring even distribution of lifting force and preventing localized overload. Simultaneously, the independently configured secondary fall protection lug 3 forms a new safety system through the turntable beam 7. In the event of a sudden failure of the main hoisting system, it immediately locks with the locking mechanism of the turntable beam 7, transferring the kinetic energy of the fall to the main frame of the drilling rig through a multi-point distributed structure.

[0038] In another specific implementation, the lifting lug 2 is connected to the hook 61 of the blowout preventer lifting device 6 via a first shackle 8. As a standardized connector, the shackle's bidirectional hinge characteristic allows for a certain angular deflection between the hook 61 and the lug. In the initial stages of lifting, when the blowout preventer 5 is not fully aligned, it can adaptively adjust the direction of force, avoiding additional bending moments caused by rigid connections. While bearing vertical lifting force, it also prevents accidental disengagement through a mechanical self-locking mechanism, making its reliability far superior to traditional wire rope splicing methods.

[0039] In another specific implementation, the secondary anti-fall lug group 3 is connected to the turntable beam 7 via the second shackle 9 and the hoisting rope 10. Under normal conditions, the hoisting rope 10 is kept moderately slack to avoid interfering with the operation of the main hoisting system, while the preset length ensures that an effective load path can be quickly established when the anti-fall is triggered. When the main hoisting fails and the blowout preventer 5 falls, the hoisting rope 10 is stretched taut, and the anchoring point of the shackle and the turntable beam 7 forms a rigid support structure, distributing the impact load to the main frame of the drilling rig through multiple sets of anti-fall lug plates 31.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. The present utility model extends to any new features or combinations disclosed in this specification, and any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model. It is obvious to those skilled in the art that the present utility model is not limited to the details of the above exemplary embodiments, and that detailed technical features not disclosed in this embodiment, such as specific structures, are all prior art and can be obtained by those skilled in the art from the prior art; the connection method can be a fixed connection, a detachable connection, or an integral part; it can be a fixed connection, a movable connection, or a hinged connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific manner of the above terms in the embodiments of the present utility model according to the specific circumstances, and the present disclosure does not specifically limit this aspect.

Claims

1. A blowout preventer hoisting device with secondary fall protection function, characterized in that: Includes a base (1), which has a placement hole (11) for placing a blowout preventer (5); the base (1) is provided with a hoisting lug (2) and a secondary anti-fall lug (3); the base (1) is also provided with a circumferential sliding aid assembly (4).

2. The blowout preventer clamp device with secondary fall protection function as described in claim 1, characterized in that: The base (1) includes two symmetrical semi-circular ring hangers (13), which are detachably connected to each other as a ring by fasteners, forming the placement hole (11).

3. The blowout preventer hoisting device with secondary fall protection function as described in claim 2, characterized in that: The lifting ear assembly (2) includes two sets of lifting ear plates (21) symmetrically arranged along the axis of the placement hole (11). Each set of lifting ear plates (21) includes two pieces, and the two lifting ear plates (21) are respectively located on two semi-circular ring hangers (13). When the semi-circular ring hangers (13) are connected, each set of lifting ear plates (21) is correspondingly merged.

4. The blowout preventer hoisting device with secondary fall protection function as described in claim 2, characterized in that: The secondary anti-fall ear group (3) includes at least two and an even number of anti-fall ear plates (31), which are symmetrically distributed on the semi-circular hanging bracket (13), and are symmetrically arranged between each pair of anti-fall ear plates (31) along the axis of the placement hole (11).

5. The blowout preventer clamp device with secondary fall protection function as described in any one of claims 1-4, characterized in that: The circumferential sliding component (4) includes a bottom sliding component (41), which includes a plurality of first rollers or first bearings (411) arranged circumferentially along the base (1). The rotation axis of the first rollers or first bearings (411) extends radially along the placement hole (11). A step portion (12) is provided above the base (1) along the base (1), and the bottom sliding component (41) is located on the step portion (12).

6. The blowout preventer hoisting device with secondary fall protection function as described in claim 5, characterized in that: The circumferential sliding component (4) includes a side sliding component (42), which includes a plurality of second rollers (421) or second bearings arranged circumferentially, the rotation axis of the second rollers (421) or second bearings extending axially along the placement hole (11).

7. The blowout preventer hoisting device with secondary fall protection function as described in claim 6, characterized in that: The bottom sliding component (41) and the side sliding component (42) are alternately arranged circumferentially along the base (1).

8. A blowout preventer hoisting structure with secondary fall protection function, characterized in that: It includes a blowout preventer hoisting device (6), a turntable beam (7), and a blowout preventer lifting clamp device as described in any one of claims 1-7; the hoisting lug (2) is connected to the blowout preventer hoisting device (6), and the secondary anti-fall lug (3) is connected to the turntable beam (7).

9. The blowout preventer hoisting structure with secondary fall protection function as described in claim 8, characterized in that: The lifting lug (2) is connected to the hook (61) of the blowout preventer lifting device (6) via the first shackle (8).

10. The blowout preventer hoisting structure with secondary fall protection function as described in claim 8, characterized in that: The secondary anti-fall ear assembly (3) is connected to the turntable beam (7) via the second shackle (9) and the suspension rope (10).

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