A deep sea drilling blowout preventer transport vehicle

Abstract

The application discloses a deep-sea drilling blowout preventer transport vehicle, which is characterized by the following technical scheme: a group of main oil cylinders are connected between an outer frame and a lifting platform, the main oil cylinders are selected to have a multi-stage telescopic structure; the outer frame is composed of a rear frame and two side beams, and the outer frame as a whole has an "n" shape when viewed from above; a group of walking rollers are respectively arranged at four supporting legs of the outer frame, and each walking roller is sleeved in a moon pool track; each side beam is further provided with a driving assembly, and each driving assembly is arranged outside the side beam; two groups of locking pins are horizontally arranged on the upper part of the rear frame; a pair of outer frame guide rails are fixedly arranged on the top surface of each side beam of the outer frame; a pair of guide grooves are arranged on the inner surface of the rear frame in the vertical direction; and sleeves are arranged on the rear frame. The device has the advantages of stable operation, simple operation, no occupation of platform deck space, low gravity center and favorable overall layout of the platform.

Description

Technical Field

[0001] This invention belongs to the field of petroleum machinery and equipment technology, and relates to a deep-sea drilling blowout preventer transport vehicle. Background Technology

[0002] In semi-submersible platform oil and gas extraction, subsea blowout preventers (BOPs) are crucial well control devices for preventing blowouts. During drilling, the BOP needs to be lowered underwater and then connected to the subsea wellhead. Due to the large size of the BOP, it is usually stored on a BOP skid on the deck, located on one side of the drilling platform. The skid then travels along guide rails to a BOP transport vehicle spanning both sides of the moonpool. The transport vehicle then carries the BOP to the center of the moonpool, where it is connected to the riser and lowered by the drilling hoisting system.

[0003] When moving the blowout preventer in the Moon Pool area, a dedicated blowout preventer transport vehicle must be used due to the limitations of its own weight and platform layout. Summary of the Invention

[0004] The purpose of this invention is to provide a deep-sea drilling blowout preventer transport vehicle, which is responsible for transporting and lifting blowout preventers in the moon pool area.

[0005] The technical solution adopted in this invention is a deep-sea drilling blowout preventer transport vehicle, including an external frame and a lifting platform. Both the external frame and the lifting platform are box-type rigid frame structures. A set of main hydraulic cylinders is connected between the external frame and the lifting platform. The main hydraulic cylinders adopt a multi-stage telescopic structure.

[0006] The structure of the external frame is as follows: it is welded together with the rear frame and the side beams on both sides. The external frame is shaped like an "n" when viewed from above. A set of traveling rollers is installed at each of the four legs of the external frame, and each traveling roller is fitted into the moon pool track. Each side beam is also equipped with a set of drive components, and each drive component is set on the outside of the two side beams.

[0007] Two sets of locking pins are horizontally installed on the upper part of the rear frame; a pair of outer frame guide rails are fixedly installed on the top surface of the side beam on each side of the outer frame; a pair of guide grooves are provided on the inner surface of the rear frame in the vertical direction; and upper and lower sleeves are provided on the rear frame.

[0008] The deep-sea drilling blowout preventer transport vehicle of the present invention is further characterized in that:

[0009] The external frame is also equipped with two hydraulically driven support pins on each of its two side beams.

[0010] The lifting platform is constructed by welding together a movable support and a platform frame. The upper part of the movable support is hinged to the piston rod end of the main oil cylinder. A pair of intermediate guide rails are fixedly installed on the top surface of the platform frame. Each intermediate guide rail has a folding guide rail at both ends of its outer edge, and each folding guide rail is equipped with a telescopic oil cylinder.

[0011] The movable support is also equipped with two robotic arms.

[0012] The back of the movable bracket is provided with two sets of guide posts, which are locked and limited by a pair of guide grooves on the outer frame.

[0013] The beneficial effects of this invention are that the transport vehicle can raise / lower the blowout preventer and transport it back and forth within the moon pool area, integrating multiple functions into one. All actions are hydraulically driven, ensuring smooth transport and high operational reliability. The blowout preventer is slid from its storage location onto the transport vehicle via a skid, transported to the center of the moon pool, and then lowered after being connected to the riser pipe. The transport process is simple. The transport vehicle is positioned within the moon pool area, does not occupy platform deck space, and has a low center of gravity, which is beneficial to the overall layout of the platform. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the transport vehicle when the lifting platform in the device of the present invention is in a high position;

[0015] Figure 2 This is a top view of the transport vehicle when the lifting platform in the device of the present invention is in a high position;

[0016] Figure 3 This is a partial left-side view of the transport vehicle when the lifting platform in the device of the present invention is in a high position (including the blowout preventer);

[0017] Figure 4 This is a partial left-side view of the transport vehicle when the lifting platform in the device of the present invention is in a low position (including the blowout preventer);

[0018] Figure 5 This is a front view schematic diagram of the transport vehicle when the lifting platform in the device of the present invention is in a low position;

[0019] Figure 6 This is a top view of the external frame in the device of the present invention.

[0020] In the diagram, 1. External frame, 2. Lifting platform, 3. Main hydraulic cylinder, 4. Drive assembly, 5. Traveling rollers, 6. Blowout preventer, 7. Moon pool track, 8. Skid;

[0021] 1-1. Rear frame, 1-2. Side beam, 1-3. Positioning pin, 1-4. Outer frame guide rail, 1-5. Guide groove, 1-6. Support pin, 1-7. Sleeve;

[0022] 2-1. Movable support, 2-2. Platform, 2-3. Intermediate guide rail, 2-4. Folding guide rail, 2-5. Telescopic cylinder, 2-6. Locking pin, 2-7. Robotic arm, 2-8. Guide column. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The structure of this invention includes an outer frame 1 and a lifting platform 2. Both the outer frame 1 and the lifting platform 2 are box-type rigid frame structures (these two box-type rigid frame structures are collectively referred to as a transport vehicle or the main body of the transport vehicle). A set of main hydraulic cylinders 3 are connected between the outer frame 1 and the lifting platform 2. The main hydraulic cylinders 3 preferably have a multi-stage telescopic structure, so that the lifting platform 2 rises / falls relative to the outer frame 1 as the main hydraulic cylinders 3 extend and retract. When the piston rod of the main hydraulic cylinder 3 is fully retracted, the lifting platform is in a low position. Figure 4 At this time, the transport vehicle can carry the blowout preventer and slide it back and forth in the moon pool; and when the piston rod of the main cylinder 3 is fully extended, the lifting platform is in a high position. Figure 3 At this time, the outer frame guide rails 1-4 can be connected to the guide rails on the lower deck, so that the blowout preventer can move closer to / away from the transport vehicle with the skid 8.

[0025] Reference Figure 2 , Figure 6 The structure of the outer frame 1 is as follows: it is welded together with the rear frame 1-1 and the side beams 1-2 on both sides. The outer frame 1 is shaped like an "n" when viewed from above. A set of traveling rollers 5 are installed at the four legs of the outer frame 1. Each traveling roller 5 is fitted into the moon pool track 7, so that the outer frame 1 spans across the moon pool track 7 on both sides of the moon pool. Each side beam 1-2 is also equipped with a set of drive components 4. Each drive component 4 is located on the outside of the side beams 1-2 on both sides. Each drive component 4 consists of a hydraulic motor, a reducer and a pinion. The pinion moves relative to the rack on the deck surface, thereby driving the outer frame 1 to move along the moon pool track 7, realizing the overall movement of the transport vehicle body.

[0026] Two sets of locking pins 1-3 are horizontally arranged on the upper part of the rear frame 1-1; a pair of outer frame guide rails 1-4 (see) are fixedly installed on the top surface of the side beams 1-2 on each side of the outer frame 1. Figure 2 and Figure 6 There are two outer frame guide rails 1-4 in total; a pair of guide grooves 1-5 are provided on the inner surface of the rear frame 1-1 in the vertical direction for mounting and limiting the lifting platform 2 to rise and fall; two sleeves 1-7 are provided on the rear frame 1-1, one upper and one lower, to support and fix the main oil cylinder 3.

[0027] Considering that the lifting platform 2 may deform significantly when supporting the blowout preventer 6, causing the blowout preventer 6 to become misaligned and unable to properly connect with the riser pipe, two hydraulically driven support pins 1-6 are also provided on each of the side beams 1-2 on both sides of the outer frame 1 (see...). Figure 3 and Figure 6 There are a total of four support pins 1-6. The four sets of support pins 1-6 can work together on the body frame of the blowout preventer 6 to help lift the blowout preventer 6, so that the lifting platform 2 has a good rigidity to ensure that the blowout preventer 6 is in the correct position so as to be connected to the water-proof pipe.

[0028] Reference Figure 2 , Figure 3 , Figure 4 The lifting platform 2 is constructed by welding together a movable support 2-1 and a platform 2-2. The platform 2-2 supports the blowout preventer 6. The upper part of the movable support 2-1 is hinged to the piston rod end of the main cylinder 3. The height of the movable support 2-1 depends on the stroke of the multi-stage cylinder and the length of the cylinder barrel. A pair of intermediate guide rails 2-3 are fixedly installed on the top surface of the platform 2-2. Each intermediate guide rail 2-3 has a folding guide rail 2-4 (see...) at both ends of its outer edge. Figure 2 There are a total of four folding guide rails, 2-4. Figure 2 The image shows two folding guide rails 2-4 on one side in the unfolded state, and two folding guide rails 2-4 on the other side in the folded-back state. Each folding guide rail 2-4 is equipped with a telescopic hydraulic cylinder 2-5. When all folding guide rails 2-4 are unfolded simultaneously, a pair of intermediate guide rails 2-3 connect with two outer frame guide rails 1-4, together forming the operating guide rails for the blowout preventer's skid 8. Only when the blowout preventer's skid 8 slides towards / detaches from the transport vehicle will the folding guide rails 2-4 unfold and connect with the outer frame guide rails 1-4. When not in operation, the folding guide rails 2-4 retract and fold back tightly against the side of the platform 2-2 (see...). Figure 2 This facilitates the lifting / lowering of the lifting platform 2. When the transport vehicle of the present invention is in the parking position and the lifting platform 2 is raised to the high position, the operating guide rail is connected to the skid guide rail of the blowout preventer 6 on the deck surface, so that the skid 8 carries the blowout preventer 6 and transfers it to the lifting platform 2 along the operating guide rail.

[0029] Two robotic arms 2-7 are also installed on the mobile support 2-1. Each robotic arm 2-7 is equipped with its own swing cylinder to achieve the function of clamping / releasing. During the transfer of the blowout preventer 6, the two robotic arms 2-7 can clamp the main frame of the blowout preventer 6, thereby restraining the blowout preventer 6 and preventing it from shaking.

[0030] The back of the movable support 2-1 is provided with two sets of guide columns 2-8. These two sets of guide columns 2-8 are locked and limited one-to-one with a pair of guide grooves 1-5 on the outer frame 1, and play a guiding role in the lifting operation of the lifting platform 2.

[0031] Since the blowout preventer 6 is higher on the deck surface than on the drilling platform, the lifting platform 2 must first be lowered to its lowest position. Then, the transport vehicle will move the skid 8 along with the blowout preventer 6 to the center of the moon pool, awaiting the lowering of the riser. Therefore, the stroke and cylinder length of the main hydraulic cylinder 3 can be designed based on the height relationship between the drilling platform and the blowout preventer 6. While ensuring the hydraulic cylinder stroke, the cylinder length can be shortened as much as possible, which can also save on the height dimensions of the lifting platform 2.

[0032] After the blowout preventer 6 is connected to the baffle pipe, during the lifting process of the blowout preventer 6, the skid 8 of the blowout preventer 6 located on the lifting platform 2 may also be lifted, thus detaching from the lifting platform 2. Therefore, two locking pins 2-6 are arranged on each side of the platform guide rail 2-3 of the lifting platform 2 (see...). Figure 4 It can be inserted into the corresponding locking pin hole of the skid 8 to lock the skid 8 and prevent it from falling off the transport vehicle.

[0033] On the back of the mobile support 2-1, there are two pairs of positioning pin holes (a total of two pairs of positioning pin holes) at the corresponding high and low positions on both sides, which are matched with the two positioning pins 1-3 arranged on the rear frame 1-1 of the outer frame; when the lifting platform 2 moves to the upper and lower ends (i.e., the high position and the low position), the position of the lifting platform 2 needs to be locked in order to carry out the relevant operations on the blowout preventer 6.

[0034] In addition, railings, walkways, and ladders are installed at corresponding locations on the main body of the transport vehicle to facilitate maintenance and safety protection for operators.

[0035] In the device of the present invention, the main hydraulic cylinder 3, drive assembly 4, positioning pin 1-3, support pin 1-6, telescopic hydraulic cylinder 2-5, locking pin 2-6, and robotic arm 2-7 can all be controlled separately, or they can be connected to a controller or control box to achieve unified and coordinated program control.

Claims

1. A deep-sea drilling blowout preventer transport vehicle, characterized in that: It includes an external frame (1) and a lifting platform (2). Both the external frame (1) and the lifting platform (2) are box-type rigid frame structures. A set of main oil cylinders (3) are connected between the external frame (1) and the lifting platform (2). The main oil cylinders (3) adopt a multi-stage telescopic structure. The structure of the external frame (1) is as follows: it is welded together with a rear frame (1-1) and side beams (1-2) on both sides. The external frame (1) is shaped like an "n" when viewed from above. A set of walking rollers (5) are installed at the four legs of the external frame (1), and each walking roller (5) is fitted in the moon pool track (7). Each side beam (1-2) is also equipped with a set of drive components (4), and each drive component (4) is set on the outside of the side beams (1-2) on both sides. Two sets of locking pins (1-3) are horizontally arranged on the upper part of the rear frame (1-1); a pair of outer frame guide rails (1-4) are fixedly arranged on the top surface of the side beams (1-2) on each side of the outer frame (1); a pair of guide grooves (1-5) are provided on the inner surface of the rear frame (1-1) in the vertical direction; and two sleeves (1-7) are provided on the rear frame (1-1) at the top and bottom. Two hydraulically driven support pins (1-6) are also provided on the side beams (1-2) on both sides of the external frame (1). The structure of the lifting platform (2) is that it is welded together from the movable support (2-1) and the platform (2-2). The upper part of the movable support (2-1) is hinged to the piston rod end of the main oil cylinder (3). A pair of intermediate guide rails (2-3) are fixedly installed on the top surface of the platform (2-2). Each intermediate guide rail (2-3) has a folding guide rail (2-4) at both ends of its outer edge. Each folding guide rail (2-4) is equipped with a telescopic oil cylinder (2-5).

2. The deep-sea drilling blowout preventer transport vehicle according to claim 1, characterized in that: The movable support (2-1) is also equipped with two robotic arms (2-7).

3. The deep-sea drilling blowout preventer transport vehicle according to claim 1, characterized in that: The movable bracket (2-1) has two sets of guide posts (2-8) on its back. These two sets of guide posts (2-8) are matched and locked in place with a pair of guide grooves (1-5) on the outer frame (1).

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