An offshore telescoping floating drilling platform and a drilling ship

Abstract

The application discloses a sea retractable floating drilling platform and a drilling ship, and relates to the technical field of drilling platform engineering, which comprises a sliding device arranged on a ship body; a sliding platform slidably arranged on the sliding device and used for mounting drilling equipment, wherein the sliding platform can slide on the sliding device along the transverse direction of the ship body to one end of the ship body, and the one end of the sliding platform extending out of the ship body is provided with a reserved opening used for lowering a drill rod; and a driving device used for driving the sliding platform to slide on the sliding device along the transverse direction of the ship body and making the reserved opening extend out of the ship body. When an emergency occurs and rapid evacuation is needed, the drill rod is disconnected, part of the drill rod is left in place, the sliding platform is retracted to the ship body through the sliding device, and the drill rod left in place is separated from the area of the sliding platform from the reserved opening, so that the rapid evacuation is completed, the evacuation efficiency is high, the safety performance is good, and the problems of low evacuation efficiency and possible safety accidents in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of drilling platform engineering technology, specifically to a marine telescopic floating drilling platform and drilling vessel. Background Technology

[0002] Drilling vessels are a common method of drilling in waters. They utilize channel steel to construct the drilling platform on a vessel suitable for the drilling environment. Compared to other platforms, this type of platform has a wider range of applications and can perform drilling operations in relatively deep waters. They are generally classified into single-vessel cantilever drilling platforms, twin-vessel assembled drilling platforms, and single-vessel mid-section pre-drilled hole drilling platforms.

[0003] Single-ship cantilever drilling platforms are generally built on a single construction vessel. The platform is built on the left or right side of the ship's side, using channel steel as support and beams, extending 2.5 to 3.0 meters out of the hull. The platform surface is covered with and fixed with wooden flooring, and equipped with necessary guardrails. The platform's orifice slots should be easy to load and unload.

[0004] In existing technologies, when engineering vessels need to evacuate due to severe weather or other special circumstances, the drilling tools must be retrieved first before the vessels can be evacuated. This results in low evacuation efficiency and may lead to safety accidents. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a retractable floating drilling platform and drilling vessel, which can solve the problem that in the existing technology, when encountering special situations such as severe weather, the drilling tools need to be retrieved before the engineering vessel can be evacuated, resulting in low evacuation efficiency and the potential for safety accidents.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] On the one hand, a retractable floating drilling platform for offshore operations is provided, comprising:

[0008] A sliding device, which is used to be installed on the hull;

[0009] A sliding platform is slidably mounted on the sliding device for mounting drilling equipment. The sliding platform can slide on the sliding device along the lateral direction of the hull until one end extends out of the hull. The end of the sliding platform extending out of the hull is provided with a reserved opening for lowering the drill pipe.

[0010] A driving device is used to drive the sliding platform to slide on the sliding device along the lateral direction of the hull and to make the reserved opening extend out of the hull.

[0011] Based on the above technical solutions,

[0012] In some alternative embodiments, the sliding device includes a plurality of transverse sliding units spaced apart along the longitudinal direction of the hull, the transverse sliding unit comprising:

[0013] Steel rails, which are used to be installed on the hull;

[0014] The mobile vehicle unit is connected to the sliding platform and is slidably mounted on the rail.

[0015] In some alternative solutions, limit blocks are provided on the rails to restrict the sliding range of the moving train.

[0016] In some alternative solutions, a fixing device is also included for fixing the relative position of the sliding platform and the hull. The fixing device comprises multiple fixing units spaced apart along the longitudinal direction of the hull, each fixing unit comprising:

[0017] Grounding channel steel, which is used to be installed on the hull;

[0018] A connecting channel steel is provided, which is connected to the sliding platform and has a gap between it and the grounding channel steel.

[0019] Connecting bolts are used to fix the relative positions of the grounding channel steel and the connecting channel steel.

[0020] In some alternative embodiments, the driving device includes at least one driving unit, the driving unit comprising:

[0021] Two anchor points are provided for placement on the hull, and the two anchor points are spaced apart along the lateral direction of the hull.

[0022] A drive motor is mounted on the sliding platform between the two anchor points, and the drive motor is connected to the two anchor points by a steel wire rope.

[0023] In some alternative embodiments, the sliding platform includes:

[0024] A platform frame, which is mounted on the sliding device;

[0025] Plates, which are laid on the platform frame, are used to install drilling equipment.

[0026] In some alternative solutions, the platform framework includes:

[0027] A two-layer support frame, wherein the support frame is provided with the reserved opening;

[0028] Multiple connecting units are located between the two layers of the support frame, with their two ends connected to the two layers of the support frame respectively.

[0029] In some alternative solutions, a movable plate is provided on the reserved opening, the movable plate does not interfere with the drill rod, and a drive mechanism is also provided on the sliding platform. The drive mechanism is connected to the movable plate and is used to drive the movable plate to cover or open the reserved opening.

[0030] In some alternative solutions, the sliding platform is provided with a guardrail on the side away from the hull, the guardrail has a notch corresponding to the reserved opening, and a guardrail door is provided at the opening end of the reserved opening, the guardrail door being located at the notch.

[0031] On the other hand, a drilling vessel is provided, which includes the aforementioned retractable floating drilling platform.

[0032] Compared with the prior art, the advantages of the present invention are as follows:

[0033] When using this offshore telescopic floating drilling platform, a sliding device is installed on the hull, and the sliding platform is slidably mounted on the sliding device. Drilling equipment is installed on the sliding platform. The sliding platform can slide along the hull in the lateral direction along the sliding device until one end extends out of the hull. A reserved opening is provided at the end of the sliding platform extending out of the hull for lowering drill pipe. A drive device drives the sliding platform to slide along the hull in the lateral direction along the sliding device, extending the reserved opening out of the hull. The opening end of the reserved opening is located on the side of the sliding platform away from the hull. In case of an emergency requiring rapid evacuation, the drill pipe is disconnected, leaving part of the drill pipe in place. The sliding platform is retracted to the hull via the sliding device, and the remaining drill pipe detaches from the area of ​​the sliding platform through the reserved opening, thus completing a rapid evacuation. This method offers high evacuation efficiency and good safety performance, solving the problem in existing technologies where, in special circumstances such as severe weather, the drilling tools must be retrieved before the engineering vessel can be evacuated, resulting in low evacuation efficiency and potential safety accidents. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of an embodiment of a drilling vessel according to the present invention;

[0036] Figure 2 This is a front view structural diagram of an embodiment of a drilling vessel according to the present invention;

[0037] Figure 3This is a schematic diagram of the upper structure of the support frame in an embodiment of the present invention for a marine telescopic floating drilling platform;

[0038] Figure 4 This is a schematic diagram of the lower layer of the support frame in an embodiment of an offshore telescopic floating drilling platform according to the present invention;

[0039] Figure 5 This is a front view schematic diagram of the sliding platform in an embodiment of the present invention for a marine telescopic floating drilling platform;

[0040] Figure 6 This is a side view of the sliding platform in an embodiment of the offshore telescopic floating drilling platform of the present invention.

[0041] Figure 7 This is a schematic diagram of the fixing device in an embodiment of the present invention for a marine telescopic floating drilling platform;

[0042] Figure 8 This is a schematic diagram of the drive device in an embodiment of the present invention for a marine telescopic floating drilling platform;

[0043] Figure 9 This is a side view of the drive mechanism in an embodiment of the present invention for a marine telescopic floating drilling platform.

[0044] Figure 10 This is a front view structural schematic diagram of the drive mechanism in an embodiment of a marine telescopic floating drilling platform according to the present invention;

[0045] Figure 11 This is a schematic diagram of the structure of the movable plate in an embodiment of a marine telescopic floating drilling platform according to the present invention;

[0046] Figure 12 This is a schematic diagram of the sliding device in an embodiment of an offshore telescopic floating drilling platform according to the present invention;

[0047] Figure 13 This is a schematic diagram of the drive device in an embodiment of a marine telescopic floating drilling platform according to the present invention.

[0048] In the diagram: 1. Sliding platform; 11. Reserved opening; 12. Platform frame; 121. Support skeleton; 1211. Horizontal bar; 1212. Longitudinal bar; 122. Connecting unit; 1221. Connecting rod; 1222. Connecting long rod; 13. Plate; 14. Movable plate; 15. Guardrail gate; 16. Mud pit; 17. Drill frame; 2. Hull; 3. Sliding device; 31. Rail; 32. Moving vehicle group; 33. Limiting block; 4. Drive device; 41. Anchor point; 42. Drive motor; 43. Wire rope; 5. Fixing device; 51. Grounding channel steel; 52. Connecting channel steel; 53. Connecting bolt; 6. Guardrail; 7. Drive mechanism; 71. Tilting motor; 72. Tilting shaft; 8. Guardrail net; 9. Grounding pipe steel; 10. Drill rod. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] The following detailed description, in conjunction with the accompanying drawings, provides an embodiment of the present invention: a retractable floating drilling platform and drilling vessel.

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, on the one hand, a retractable floating drilling platform for offshore operations is provided, which includes:

[0052] Sliding device 3, which is used to be installed on the hull 2;

[0053] The sliding platform 1 is slidably mounted on the sliding device 3 and is used to install drilling equipment. The sliding platform 1 can slide on the sliding device 3 along the lateral direction of the hull 2 ​​until one end extends out of the hull 2. The end of the sliding platform 1 extending out of the hull 2 ​​is provided with a reserved opening 11 for lowering the drill rod 10.

[0054] The drive device 4 is used to drive the sliding platform 1 to slide on the sliding device 3 in the lateral direction of the hull 2, and to make the reserved opening 11 extend out of the hull 2.

[0055] When using this offshore telescopic floating drilling platform, the sliding device 3 is set on the hull 2, and the sliding platform 1 is slidably set on the sliding device 3. Drilling equipment is installed on the sliding platform 1. The sliding platform 1 can slide on the sliding device 3 along the lateral direction of the hull 2 ​​until one end extends out of the hull 2. A reserved opening 11 is provided at the end of the sliding platform 1 that extends out of the hull 2. The reserved opening 11 is used to lower the drill pipe 10. The driving device 4 drives the sliding platform 1 to slide on the sliding device 3 along the lateral direction of the hull 2 ​​and causes the reserved opening 11 to extend out of the hull 2. The opening end of the reserved opening 11 is located on the side of the sliding platform 1 away from the hull 2. In case of an emergency requiring rapid evacuation, the drill rod 10 is disconnected, and part of the drill rod 10 remains in place. The sliding platform 1 is retracted to the hull 2 ​​via the sliding device 3. The drill rod 10 remaining in place is removed from the area of ​​the sliding platform 1 through the reserved opening 11, thus completing the rapid evacuation. This method has high evacuation efficiency and good safety performance. It solves the problem in the prior art that when engineering vessels need to evacuate in special circumstances such as severe weather, the drilling tools must be retrieved before the engineering vessels can be evacuated, which results in low evacuation efficiency and may lead to safety accidents.

[0056] In this example, the sliding platform 1 is equipped with a mud pit 16 and a drill frame 17. The drill frame 17 is used to facilitate the installation of drilling equipment. The mud pit 16 is connected to the drilling equipment and supplies mud to the drilling equipment.

[0057] like Figure 4 , Figure 5 , Figure 6 and Figure 12 As shown, in some optional embodiments, the sliding device 3 includes a plurality of transverse sliding units spaced apart along the longitudinal direction of the hull 2, and the transverse sliding unit includes:

[0058] Rail 31, which is used to be installed on the hull 2;

[0059] The mobile carriage 32 is connected to the sliding platform 1 and is slidably mounted on the rail 31.

[0060] This embodiment specifically describes the structure of the sliding device 3. The sliding device 3 includes multiple transverse sliding units spaced apart along the longitudinal direction of the hull 2. Each transverse sliding unit includes a rail 31 and a moving carriage 32. The rail 31 is mounted on the hull 2, and the moving carriage 32 is connected to the sliding platform 1 and slidably mounted on the rail 31. The sliding method is specifically described, resulting in a more reasonable structure, a smoother sliding process, and a simple and easy-to-implement structure.

[0061] like Figure 5 and Figure 12 As shown, in some optional embodiments, a limit block 33 is provided on the rail 31 to limit the sliding range of the moving train 32.

[0062] In this embodiment, a limit block 33 is provided on the rail 31 to limit the sliding range of the moving vehicle group 32, so as to prevent the sliding distance from being too large, the sliding platform 1 from extending too far out of the hull 2, which would cause the overall structure to be unstable and thus cause the hull 2 ​​to capsize.

[0063] like Figure 6 and Figure 7 As shown, in some optional embodiments, a fixing device 5 is also included for fixing the relative position of the sliding platform 1 and the hull 2. The fixing device 5 includes a plurality of fixing units spaced apart along the longitudinal direction of the hull 2, and each fixing unit includes:

[0064] Grounding channel steel 51, which is used to be installed on the hull 2;

[0065] The connecting channel steel 52 is connected to the sliding platform 1, and a gap is left between it and the grounding channel steel 51;

[0066] Connecting bolt 53 is used to fix the relative positions of grounding channel steel 51 and connecting channel steel 52.

[0067] In this embodiment, the offshore telescopic floating drilling platform also includes a fixing device 5. The fixing device 5 is used to fix the relative position of the sliding platform 1 and the hull 2. The fixing device 5 includes multiple fixing units spaced apart along the longitudinal direction of the hull 2. Each fixing unit includes a grounding channel steel 51, a connecting channel steel 52, and a connecting bolt 53. The grounding channel steel 51 is installed on the hull 2. The connecting channel steel 52 is connected to the sliding platform 1 and has a gap with it. The connecting bolt 53 fixes the relative position of the grounding channel steel 51 and the connecting channel steel 52 to fix the relative position of the sliding platform 1 and the hull 2, preventing relative displacement between the sliding platform 1 and the hull 2 ​​during operation, which would affect drilling. The fixing device 5 also strengthens the connection between the sliding platform 1 and the hull 2, making the offshore telescopic floating drilling platform more stable.

[0068] like Figure 4 , Figure 6 , Figure 8 and Figure 13 As shown, in some optional embodiments, the driving device 4 includes at least one driving unit, the driving unit comprising:

[0069] Two anchor points 41 are provided for installation on the hull 2, and the two anchor points 41 are spaced apart along the transverse direction of the hull 2.

[0070] The drive motor 42 is mounted on the sliding platform 1 and located between two anchor points 41. The drive motor 42 is connected to the two anchor points 41 via a steel wire rope 43.

[0071] In this embodiment, the specific structure of the drive device 4 is described in detail. The drive device 4 includes at least one drive unit, which includes two anchor points 41 and a drive motor 42. The two anchor points 41 are set on the hull 2 ​​and are spaced apart along the lateral direction of the hull 2. The drive motor 42 is set on the sliding platform 1 and located between the two anchor points 41. The drive motor 42 is connected to the two anchor points 41 through steel wire ropes 43. By changing the length of the steel wire ropes 43 on both sides of the drive motor 42, the sliding platform 1 is driven to extend or retract. The structure is simple and easy to implement.

[0072] like Figure 3 , Figure 4 and Figure 8 As shown, in some optional embodiments, the sliding platform 1 includes:

[0073] Platform frame 12, which is mounted on sliding device 3;

[0074] Plate 13, which is laid on platform frame 12, is used to install drilling equipment.

[0075] In this embodiment, the structure of the sliding platform 1 is specifically described. The sliding platform 1 includes a platform frame 12 and a plate 13. The platform frame 12 is mounted on the sliding device 3, and the plate 13 is laid on the platform frame 12 for installing drilling equipment. This reduces the weight of the sliding platform 1 and prevents it from becoming too heavy and capsizing when it extends out of the hull 2.

[0076] like Figures 3-6 As shown, in some optional embodiments, platform framework 12 includes:

[0077] A two-layer support frame 121, with a reserved opening 11 on the support frame 121;

[0078] Multiple connecting units 122 are located between two layers of support frame 121, and their two ends are connected to the two layers of support frame 121 respectively.

[0079] In this embodiment, the structure of the platform frame 12 is specifically described. The platform frame 12 includes a two-layer support skeleton 121 and a plurality of connecting units 122. The two-layer support skeleton 121 is provided with a reserved opening 11. The plurality of connecting units 122 are located between the two-layer support skeleton 121 and are connected to the two-layer support skeleton 121 at both ends, making the platform frame 12 more stable.

[0080] In this example, one layer of the support frame 121 includes multiple spaced horizontal rods 1211 and multiple spaced vertical rods 1212. The vertical rods 1212 are connected to the horizontal rods 1211 to form a rectangular surface. The two ends of the connecting unit 122 are respectively connected to the connection points of the corresponding horizontal rods 1211 and vertical rods 1212 in the two layers of the support frame 121. The horizontal rods 1211 of the upper layer of the support frame 121 are located above the vertical rods 1212, and the vertical rods 1212 of the lower layer of the support frame 121 are located above the horizontal rods 1211. The spacing between adjacent vertical rods 1212 is different. The spacing between adjacent vertical rods 1212 decreases towards the reserved opening 11, which facilitates the installation of drilling equipment.

[0081] In this example, the connecting unit 122 is a connecting rod 1221. The two ends of the connecting rod 1221 are connected to the connection points of the corresponding transverse rod 1211 and longitudinal rod 1212 in the two layers of support frame 121, respectively. Multiple connecting rods 1222 are provided on the side of the support frame 121 near the hull 2. The hull 2 ​​is also provided with grounding pipe steel 9 corresponding to the connecting rods 1222. Bolt holes are opened on the connecting rods 1222 and the grounding pipe steel 9. When the sliding platform 1 moves to the limit position, the bolt holes of the connecting rods 1222 and the grounding pipe steel 9 are opposite each other, and the sliding platform 1 can be fixed by bolts.

[0082] like Figure 3 , Figure 9 , Figure 10 and Figure 11 As shown, in some optional embodiments, a movable plate 14 is provided on the reserved opening 11. The movable plate 14 does not interfere with the drill rod 10. The sliding platform 1 is also provided with a drive mechanism 7, which is connected to the movable plate 14 and is used to drive the movable plate 14 to cover or open the reserved opening 11.

[0083] In this embodiment, a movable plate 14 is provided on the reserved opening 11, and the movable plate 14 does not interfere with the drill rod 10. A drive mechanism 7 is also provided on the sliding platform 1. The drive mechanism 7 is connected to the movable plate 14 to drive the movable plate 14 to cover the reserved opening 11 or open it, so that the operator can adjust the drill rod 10. When withdrawing, the movable plate 14 can be opened to retract the sliding platform 1 without affecting the withdrawal efficiency.

[0084] In this example, the drive mechanism 7 includes a flip motor 71 and a flip shaft 72. The flip shaft 72 is connected to the movable plate 14. The movable plate 14 is flipped by the flip shaft 72. The flip motor 71 can drive the flip shaft 72 to rotate so that the movable plate 14 can be covered on the reserved opening 11 or opened.

[0085] like Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, in some optional embodiments, the sliding platform 1 is provided with a guardrail 6 on the side away from the hull 2. The guardrail 6 is provided with a notch corresponding to the reserved opening 11. A guardrail door 15 is also provided at the opening end of the reserved opening 11, and the guardrail door 15 is located at the notch.

[0086] In this embodiment, a guardrail 6 is provided on the side of the sliding platform 1 away from the hull 2, and the guardrail 6 has a notch corresponding to the reserved opening 11. A guardrail door 15 is also provided at the opening end of the reserved opening 11. The guardrail door 15 is located at the notch. The guardrail 6 can prevent the operator from falling into the water during drilling and has a certain protective function. The guardrail 6 has a notch corresponding to the reserved opening 11, and there is a guardrail door 15 at the notch. When withdrawing, the guardrail door 15 can be opened to retract the sliding platform 1 without affecting the withdrawal efficiency.

[0087] In this example, guardrail 6 is equipped with guardrail mesh 8.

[0088] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, on the other hand, a drilling vessel is provided, which includes the aforementioned retractable floating drilling platform.

[0089] When using this drilling vessel, the sliding device 3 of the offshore telescopic floating drilling platform is set on the hull 2. The sliding platform 1 is slidably set on the sliding device 3. Drilling equipment is installed on the sliding platform 1. The sliding platform 1 can slide on the sliding device 3 along the lateral direction of the hull 2 ​​until one end extends out of the hull 2. A reserved opening 11 is provided at the end of the sliding platform 1 that extends out of the hull 2. The reserved opening 11 is used to lower the drill pipe 10. The driving device 4 drives the sliding platform 1 to slide on the sliding device 3 along the lateral direction of the hull 2 ​​and causes the reserved opening 11 to extend out of the hull 2. The opening end of the reserved opening 11 is located on the side of the sliding platform 1 away from the hull 2. In case of an emergency requiring rapid evacuation, the drill rod 10 is disconnected, and part of the drill rod 10 remains in place. The sliding platform 1 is retracted to the hull 2 ​​via the sliding device 3. The drill rod 10 remaining in place is removed from the area of ​​the sliding platform 1 through the reserved opening 11, thus completing the rapid evacuation. This method has high evacuation efficiency and good safety performance. It solves the problem in the prior art that when engineering vessels need to evacuate in special circumstances such as severe weather, the drilling tools must be retrieved before the engineering vessels can be evacuated, which results in low evacuation efficiency and may lead to safety accidents.

[0090] In summary, this application proposes a retractable floating drilling platform and drilling vessel. When it is necessary to retract the sliding platform 1, the guardrail door 15 is opened, the movable plate 14 is flipped open by the drive mechanism 7, the connecting bolts 53 between the grounding channel steel 51 and the connecting channel steel 52 are loosened, the bolts between the connecting long rod 1222 and the grounding pipe steel 9 are loosened, the drive motor 42 is turned on, and the wire rope 43 is controlled to pull the sliding platform 1 back onto the hull 2, the drill rod 10 is disengaged from the reserved opening 11, the drive motor 42 and the guardrail door 15 are closed, the movable plate 14 is closed, and the grounding channel steel 51 and the connecting channel steel 52 are fixed. Lock the sliding platform 1 by connecting bolt 53 between 2, and then evacuate. When the construction platform returns to its position, open the guardrail gate 15, flip open the movable plate 14 through the drive mechanism 7, loosen the connecting bolt 53 between the grounding channel steel 51 and the connecting channel steel 52, turn on the drive motor 42, control the wire rope 43 to pull the sliding platform 1 out of the hull 2, turn off the drive motor 42 and the guardrail gate 15, close the movable plate 14, fix the connecting bolt 53 between the grounding channel steel 51 and the connecting channel steel 52, fix the bolt between the connecting long rod 1222 and the grounding pipe steel 9, and lock the sliding platform 1.

[0091] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0092] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0093] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A retractable floating drilling platform for offshore operations, characterized in that, include: A sliding device (3) is used to be installed on the hull (2); A sliding platform (1) is slidably mounted on the sliding device (3) for installing drilling equipment. The sliding platform (1) can slide on the sliding device (3) along the lateral direction of the hull (2) until one end extends out of the hull (2). The end of the sliding platform (1) extending out of the hull (2) is provided with a reserved opening (11), which is used to lower the drill rod (10). A drive device (4) is used to drive the sliding platform (1) to slide on the sliding device (3) in the lateral direction of the hull (2) and to make the reserved opening (11) extend out of the hull (2). The reserved opening (11) is provided with a movable plate (14), the movable plate (14) and the drill rod (10) do not interfere with each other, the sliding platform (1) is also provided with a drive mechanism (7), the drive mechanism (7) is connected to the movable plate (14) and is used to drive the movable plate (14) to cover the reserved opening (11) or open. The sliding platform (1) is provided with a guardrail (6) on the side away from the hull (2). The guardrail (6) is provided with a notch corresponding to the reserved opening (11). A guardrail door (15) is also provided at the opening end of the reserved opening (11). The guardrail door (15) is located at the notch. The driving device (4) includes at least one driving unit, the driving unit comprising: Two anchor points (41) are provided on the hull (2) and the two anchor points (41) are spaced apart in the lateral direction of the hull (2); A drive motor (42) is mounted on the sliding platform (1) and located between the two anchor points (41). The drive motor (42) is connected to the two anchor points (41) via a wire rope (43). The sliding platform (1) includes: Platform frame (12), which is mounted on the sliding device (3); Plate (13), which is laid on the platform frame (12) for mounting drilling equipment; The platform framework (12) includes: A two-layer support frame (121) is provided with the reserved opening (11). Multiple connecting units (122) are located between the two layers of the support frame (121), and their two ends are respectively connected to the two layers of the support frame (121); the connecting unit (122) is a connecting rod (1221). The support frame (121) includes: multiple spaced transverse rods (1211) and multiple spaced longitudinal rods (1212). The longitudinal rods (1212) are connected to the transverse rods (1211) to form a rectangular surface. The two ends of the connecting unit (122) are respectively connected to the connection points of the corresponding transverse rods (1211) and longitudinal rods (1212) in the two layers of support frames (121). The transverse rods (1211) of the upper layer of the support frame (121) are located on the upper side of the longitudinal rods (1212), and the longitudinal rods (1212) of the lower layer of the support frame (121) are located on the upper side of the transverse rods (1211). The spacing between adjacent longitudinal rods (1212) is different. The sliding device (3) includes a plurality of transverse sliding units spaced apart along the longitudinal direction of the hull (2), the transverse sliding unit comprising: Rails (31) are used to be installed on the hull (2); A mobile vehicle unit (32) is connected to the sliding platform (1) and is slidably mounted on the rail (31); Limiting blocks (33) are provided on the rail (31) to limit the sliding range of the moving vehicle group (32); It also includes a fixing device (5) for fixing the relative position of the sliding platform (1) and the hull (2). The fixing device (5) includes a plurality of fixing units spaced apart along the longitudinal direction of the hull (2). Each fixing unit includes: Grounding channel steel (51), which is used to be installed on the hull (2); A connecting channel steel (52) is connected to the sliding platform (1) and a gap is left between it and the grounding channel steel (51); Connecting bolts (53) are used to fix the relative positions of the grounding channel steel (51) and the connecting channel steel (52).

2. A drilling vessel, characterized in that, Including the offshore telescopic floating drilling platform as described in claim 1.

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