Supporting buoyant raft for water exploration drilling machine

Abstract

The invention relates to an overwater exploration drilling machine supporting buoyant raft, and relates to the technical field of buoyant raft equipment, the overwater exploration drilling machine supporting buoyant raft comprises a buoyant raft body used for placing a drilling machine, the lower end of the buoyant raft body is fixedly connected with a plurality of rows of fixed ballast water cabins, and the fixed ballast water cabins are arranged in the length direction of the buoyant raft body; a guide support is arranged between every two adjacent rows of fixed ballast water cabins, the guide supports are arranged in the length direction of the buoyant raft body, a lifting assembly used for driving the guide supports to ascend and descend is arranged on the buoyant raft body, a plurality of movable ballast water cabins are arranged on the guide supports, and the movable ballast water cabins are arranged in the movable ballast water cabins. The movable ballast water tanks are arranged in the length direction of the guide support, a moving mechanism used for driving the movable ballast water tanks to move on the guide support is arranged on the buoyant raft body, and a feeding assembly used for adding the movable ballast water tanks to the guide support is arranged on the buoyant raft body. The ballast water tank adjusting device has the effect of flexibly adjusting the position of the ballast water tank.

Description

Technical Field

[0001] This application relates to the technical field of floating raft equipment, and in particular to a floating raft supporting an offshore exploration drilling rig. Background Technology

[0002] In numerous water-related engineering projects, including modern water conservancy and hydropower, bridge construction, port engineering, and marine resource exploration, offshore drilling operations are a crucial link in obtaining geological information and ensuring the safety and stability of the project. The floating raft supporting the offshore drilling rig serves as the fundamental platform carrying the drilling equipment and ensuring the smooth operation of drilling activities; its performance directly affects the project's progress, quality, and safety.

[0003] Traditional floating rafts supporting offshore drilling rigs are typically equipped with ballast tanks, whose main function is to adjust the buoyancy and stability of the raft by regulating the amount of water inside. However, the current layout of ballast tanks on floating rafts has significant drawbacks, as they are generally fixed around the raft body. This fixed layout makes it difficult to flexibly and precisely adjust the buoyancy of different parts based on the real-time position of the crane or the dynamic gravity changes generated during drilling operations. For example, during drilling, as the drilling depth increases, the weight distribution of the drill rod and drill bit changes, or when the crane lifts heavy drill tools, the local gravity borne by the floating raft increases significantly. At this time, because the ballast tanks are fixed in position, it is difficult to flexibly change their position and number to meet the raft's load-bearing requirements with the minimum number of ballast tanks. The inability to quickly and effectively increase or decrease buoyancy in corresponding areas can easily cause the floating raft to tilt, thereby affecting the verticality and stability of the drilling rig, reducing the accuracy of drilling operations, and in severe cases, even causing safety accidents such as drilling rig collapse or drill rod breakage. Summary of the Invention

[0004] In order to flexibly adjust the position of the ballast water tank, this application provides a floating raft for supporting an offshore exploration drilling rig.

[0005] The technical solution for supporting a floating raft for an offshore exploration drilling rig provided in this application is as follows: A floating raft supporting an offshore exploration drilling rig includes a raft body for placing the drilling rig. Multiple rows of fixed ballast water tanks are fixedly connected to the lower end of the raft body. The fixed ballast water tanks are arranged along the length of the raft body. A guide support is provided between adjacent rows of fixed ballast water tanks, and the guide support is also arranged along the length of the raft body. The raft body is equipped with a lifting assembly for raising and lowering the guide support. Multiple movable ballast water tanks are provided on the guide support, and the movable ballast water tanks are arranged along the length of the guide support. The raft body is equipped with a moving mechanism for moving the movable ballast water tanks on the guide support. The raft body is also equipped with a feeding assembly for adding the movable ballast water tanks to the guide support.

[0006] By adopting the above technical solution, the entire floating raft body can be supported by a fixed ballast tank. Then, according to the installation position of the drilling rig on the supporting floating raft, a movable ballast tank can be added to the guide support through the feeding component. Subsequently, the movable ballast tank is moved to a position where the floating raft body has a deeper draft through the moving mechanism. Then, by controlling the lifting component, the movable ballast tank is lowered into the water, thereby raising the submerged part of the floating raft body. This allows for quick and precise adjustment of the position of the ballast tank, improving its utilization rate and the stability of the entire floating raft body.

[0007] Optionally, the lifting assembly includes a lifting rod passing through the raft body, the length direction of the lifting rod being perpendicular to the upper end face of the raft body, the lower end of the lifting rod being fixedly connected to the guide bracket, and a lifting hydraulic cylinder being fixedly connected to the raft body, the output end of the lifting hydraulic cylinder being fixedly connected to the lifting rod.

[0008] By adopting the above technical solution, the lifting cylinder can drive the lifting rod to rise and fall, which in turn can drive the guide bracket to rise and fall.

[0009] Optionally, the feeding assembly includes a lifting frame that passes through and is slidably connected to the raft body. The lower end of the lifting frame is fixedly connected to a guide ramp. The guide ramp is located below the raft body and is inclined downward on the side of the guide ramp near the guide bracket. The raft body is provided with a lifting component for adjusting the height of the lifting frame.

[0010] By adopting the above technical solution, the movable ballast water tank can be slid into the guide support via the guide ramp, and then the guide ramp can be raised by the lifting component to move it away from the water surface, thereby reducing the occurrence of corrosion.

[0011] Optionally, the lifting component is configured as a lifting cylinder, which is fixedly connected to the upper end surface of the raft body, and the output shaft of the lifting cylinder is fixedly connected to the lifting frame.

[0012] By adopting the above technical solution, the lifting cylinder can be controlled to extend and retract, thereby causing the lifting frame to move up and down.

[0013] Optionally, the moving mechanism includes a chain arranged along the length of the raft body, the chain being located on both sides of the guide bracket, and sprockets meshing at both ends of the chain. A drive motor for driving the sprockets to rotate is installed on the raft body, the drive motor being connected to the sprocket shaft, and multiple actuating rods are fixedly connected to the chain. A connecting assembly for connecting to the actuating rods is provided on the movable ballast tank.

[0014] By adopting the above technical solution, the drive motor can drive the sprocket to rotate, which in turn drives the chain to rotate. Subsequently, the chain drives the movable ballast water tank to move through the lever and connecting components.

[0015] Optionally, the connecting assembly includes an upper protective shell and a lower protective shell sleeved on the movable ballast water tank, with a connector between the upper and lower protective shells for connecting the two, and two passive rods fixedly connected to the upper protective shell, the passive rods abutting against the actuating rod.

[0016] By adopting the above technical solution, an external force can be applied to the upper protective shell through the passive rod and the actuating rod, thereby causing the movable pressurized water tanks inside the upper and lower protective shells to slide on the guide support.

[0017] Optionally, the connector is configured as a connecting bolt, which is threaded between the upper protective shell and the lower protective shell.

[0018] By adopting the above technical solution, the connecting bolts can be rotated to make them threaded onto the upper and lower housings, thereby fixing the two together.

[0019] Optionally, the raft body is provided with a receiving groove, the chain, the sprocket and the drive motor are all placed in the receiving groove, and a sealing plate for sealing the receiving groove is snapped into the opening of the receiving groove.

[0020] By adopting the above technical solution, the chain, sprocket and drive motor can be housed inside the raft body through the receiving groove, thereby reducing the area occupied by the raft body and improving its load-bearing capacity.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The movable ballast tank can be moved to a position where the raft body has a deeper draft by the moving mechanism. Then, by controlling the lifting component, the movable ballast tank can be lowered into the water, thereby raising the sunken part of the raft body. This allows for quick and precise adjustment of the position of the ballast tank, improving its utilization rate and the stability of the entire raft body. 2. The lifting rod can be raised and lowered by the lifting hydraulic cylinder, which in turn can raise and lower the guide bracket; 3. The sprocket can be driven by a drive motor to rotate, which in turn drives the chain to rotate. The chain then moves the movable ballast water tank through the lever and connecting components. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2This is a schematic diagram of the structure of the guide bracket according to an embodiment of this application; Figure 3 This is a schematic diagram of the lifting component according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the receiving groove according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the connection component according to an embodiment of this application.

[0023] In the diagram, 1. Floating raft body; 11. Receiving tank; 12. Sealing plate; 2. Fixed ballast water tank; 3. Guide support; 4. Lifting assembly; 41. Lifting rod; 42. Lifting hydraulic cylinder; 5. Movable ballast water tank; 6. Moving mechanism; 61. Chain; 62. Sprocket; 63. Drive motor; 64. Actuating rod; 65. Connecting assembly; 651. Upper protective shell; 652. Lower protective shell; 653. Passive rod; 654. Connecting piece; 7. Feeding assembly; 71. Lifting frame; 72. Guide ramp; 73. Lifting component; 8. Drive impeller. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0025] An embodiment of this application is: a floating raft supporting an offshore exploration drilling rig, referring to... Figure 1 and Figure 2 The system includes a floating raft body 1 for housing a drilling rig. The floating raft body 1 is rectangular in shape. In this embodiment, a drilling rig used for drilling in the prior art is installed on the floating raft body. Multiple rows of fixed ballast water tanks 2 are fixedly connected to the lower end of the floating raft body 1. In this embodiment, the fixed ballast water tanks 2 are arranged in three rows, and multiple fixed ballast water tanks 2 in each row are arranged along the length direction of the floating raft body 1.

[0026] A guide support 3 is provided between two adjacent rows of fixed ballast water tanks 2. The guide support 3 is set along the length of the raft body 1. The raft body 1 is provided with a lifting assembly 4 for driving the guide support 3 to rise and fall. The lifting assembly 4 is set at both ends of the guide support 3.

[0027] Reference Figure 1 , Figure 3 and Figure 4 The lifting assembly 4 includes a lifting rod 41 that passes through the raft body 1. The length direction of the lifting rod 41 is perpendicular to the upper end face of the raft body 1. The lower end of the lifting rod 41 is fixedly connected to the guide bracket 3. A lifting hydraulic cylinder 42 is fixedly connected to the raft body 1, and the output end of the lifting hydraulic cylinder 42 is fixedly connected to the lifting rod 41. Thus, the lifting rod 41 can be raised and lowered by the lifting hydraulic cylinder 42, which in turn can raise and lower the guide bracket 3.

[0028] The guide support 3 is provided with multiple movable ballast water tanks 5, which are arranged along the length of the guide support 3. The raft body 1 is provided with a moving mechanism 6 for moving the movable ballast water tanks 5 on the guide support 3.

[0029] Reference Figure 3 , Figure 4 and Figure 5 The moving mechanism 6 includes a chain 61 arranged along the length of the raft body 1. The chain 61 is located on both sides of the guide bracket 3. Both ends of the chain 61 are engaged with sprockets 62. A drive motor 63 for driving the sprockets 62 to rotate is installed on the raft body 1. The drive motor 63 is connected to the shaft of the sprockets 62. In order to reduce the area occupied on the surface of the raft body 1, a receiving groove 11 is provided on the raft body 1. The chain 61, sprockets 62 and drive motor 63 are all placed in the receiving groove 11. A sealing plate 12 for sealing the receiving groove 11 is engaged at the opening of the receiving groove 11.

[0030] Multiple actuating levers 64 are fixedly connected to the chain 61, and the multiple actuating levers 64 are arranged along the length direction of the chain 61. The movable ballast water tank 5 is provided with a connecting assembly 65 for connecting with the actuating levers 64. The connecting assembly 65 includes an upper protective shell 651 and a lower protective shell 652 sleeved on the movable ballast water tank 5, and the upper protective shell 651 and the lower protective shell 652 enclose the movable ballast water tank 5. A connecting member 654 is provided between the upper protective shell 651 and the lower protective shell 652 for connecting the two. The connecting member 654 is a connecting bolt, and the connecting bolt is threaded between the upper protective shell 651 and the lower protective shell 652. In this embodiment, there are two connecting members 654. Two passive rods 653 are fixedly connected to the upper protective shell 651, and the passive rods 653 abut against the actuating levers 64.

[0031] Thus, by rotating the connecting bolts, the connecting bolts are threaded onto the upper protective shell 651 and the lower protective shell 652, thereby fixing the two together. Subsequently, the drive motor 63 drives the sprocket 62 to rotate, which in turn drives the chain 61 to rotate. Then, the chain 61 applies external force to the upper protective shell 651 through the passive rod 653 and the actuating rod 64, thereby causing the movable ballast water tank 5 inside the upper protective shell 651 and the lower protective shell 652 to slide on the guide bracket 3, so that it slides to the appropriate position.

[0032] The raft body 1 is equipped with a feeding assembly 7 for adding movable ballast water tanks 5 to the guide support 3. The feeding assembly 7 includes a lifting frame 71 that passes through and is slidably connected to the raft body 1. A guide ramp 72 is fixedly connected to the lower end of the lifting frame 71. The guide ramp 72 is located below the raft body 1 and is inclined downward on the side of the guide ramp 72 closest to the guide support 3. The raft body 1 is equipped with a lifting member 73 for adjusting the height of the lifting frame 71. In this embodiment, the lifting member 73 is a lifting cylinder, which is fixedly connected to the upper end face of the raft body 1. The extension and retraction direction of the lifting cylinder is perpendicular to the upper end face of the raft body 1, and the output shaft of the lifting cylinder is fixedly connected to the lifting frame 71.

[0033] The addition of the movable ballast water tank 5 can be completed by sliding it onto the guide bracket 3 via the guide ramp 72.

[0034] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A floating raft supporting an offshore exploration drilling rig, comprising a raft body (1) for placing the drilling rig, characterized in that, The lower end of the raft body (1) is fixedly connected to multiple rows of fixed ballast water tanks (2). The fixed ballast water tanks (2) are arranged along the length direction of the raft body (1). A guide bracket (3) is provided between two adjacent rows of fixed ballast water tanks (2). The guide bracket (3) is arranged along the length direction of the raft body (1). The raft body (1) is provided with a lifting component (4) for driving the guide bracket (3) to rise and fall. The guide bracket (3) is provided with multiple movable ballast water tanks (5). The movable ballast water tanks (5) are arranged along the length direction of the guide bracket (3). The raft body (1) is provided with a moving mechanism (6) for driving the movable ballast water tanks (5) to move on the guide bracket (3). The raft body (1) is provided with a feeding component (7) for adding the movable ballast water tanks (5) to the guide bracket (3).

2. The floating raft supporting a marine exploration drilling rig according to claim 1, characterized in that, The lifting assembly (4) includes a lifting rod (41) that passes through the raft body (1). The length direction of the lifting rod (41) is perpendicular to the upper end face of the raft body (1). The lower end of the lifting rod (41) is fixedly connected to the guide bracket (3). A lifting hydraulic cylinder (42) is fixedly connected to the raft body (1). The output end of the lifting hydraulic cylinder (42) is fixedly connected to the lifting rod (41).

3. The floating raft supporting a marine exploration drilling rig according to claim 2, characterized in that, The feeding assembly (7) includes a lifting frame (71) that passes through and is slidably connected to the raft body (1). The lower end of the lifting frame (71) is fixedly connected to a guide ramp (72). The guide ramp (72) is located below the raft body (1). The guide ramp (72) is inclined downward on the side near the guide bracket (3). The raft body (1) is provided with a lifting member (73) for adjusting the height of the lifting frame (71).

4. The floating raft supporting an offshore exploration drilling rig according to claim 3, characterized in that, The lifting component (73) is configured as a lifting cylinder, which is fixedly connected to the upper end surface of the raft body (1), and the output shaft of the lifting cylinder is fixedly connected to the lifting frame (71).

5. A floating raft supporting a marine exploration drilling rig according to claim 1, characterized in that, The moving mechanism (6) includes a chain (61) arranged along the length of the raft body (1). The chain (61) is located on both sides of the guide bracket (3). Both ends of the chain (61) are engaged with sprockets (62). The raft body (1) is equipped with a drive motor (63) for driving the sprockets (62) to rotate. The drive motor (63) is connected to the shaft of the sprockets (62). A plurality of levers (64) are fixedly connected to the chain (61). The movable ballast tank (5) is provided with a connecting assembly (65) for connecting with the levers (64).

6. A floating raft supporting a marine exploration drilling rig according to claim 5, characterized in that, The connecting assembly (65) includes an upper protective shell (651) and a lower protective shell (652) fitted onto the movable ballast water tank (5). A connector (654) for connecting the upper protective shell (651) and the lower protective shell (652) is provided between them. Two passive rods (653) are fixedly connected to the upper protective shell (651), and the passive rods (653) abut against the actuating rod (64).

7. A floating raft supporting a marine exploration drilling rig according to claim 6, characterized in that, The connector (654) is configured as a connecting bolt, which is threaded between the upper protective shell (651) and the lower protective shell (652).

8. A floating raft supporting a marine exploration drilling rig according to claim 7, characterized in that, The raft body (1) is provided with a receiving groove (11), the chain (61), the sprocket (62) and the drive motor (63) are all placed in the receiving groove (11), and a sealing plate (12) for sealing the receiving groove (11) is snapped into the opening of the receiving groove (11).

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