Drill rod transfer system and transfer method for ocean platform

Abstract

The invention relates to the technical field of oil and gas drilling, in particular to a drill rod transfer system and method for an ocean platform. The drill rod transferring system comprises a drill rod conveying device, a drill rod transferring device and a traveling hoisting assembly, the drill rod transferring device is arranged on one side of the drill floor face, the traveling hoisting assembly is installed on the drill floor face through a derrick, the drill rod conveying device is arranged above a pipe column storage yard, and therefore the position of the pipe storage yard does not need to be occupied, more drill rods can be placed in the pipe storage yard, and the construction efficiency is improved. Therefore, continuity and efficiency of drilling operation are improved. The drill rod conveying device can grab drill rods in a pipe column storage yard and reciprocate in front of the pipe column storage yard and the drill floor face, the drill rod conveying device is used for cleaning and buckling the drill rods, overturning and lifting the drill rods to be in a vertical state after oil coating, and the drill rod transferring device is used for grabbing the drill rods in the vertical state in the drill rod conveying device and transferring the drill rods to a well opening or a mouse hole. And therefore, the drill rod can be transferred from the pipe storage yard to the drill floor surface.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas drilling, and in particular to a drill pipe transfer system and transfer method for an offshore platform. Background Art

[0002] In the field of offshore oil exploration and development, as the industry's requirements for extraction efficiency and safety continue to rise, offshore drilling platform operations are accelerating their transformation towards highly automated operations. Against this backdrop, highly automated wellhead oil equipment, due to its efficiency and stability, is gaining increasing popularity.

[0003] In the actual operation process of an offshore drilling platform, connecting individual drill pipes to form a column is a critical step. Typically, manual pre-treatment such as cleaning and oiling the drill pipes and removing the wire guards is required. The individual drill pipes are then transferred to the rig floor using a winch and power catwalk. This is labor-intensive and poses safety risks. Furthermore, due to limited deck space on offshore platforms, the installation of existing drilling tool transport devices such as power catwalks requires space in the pipe yard, which cannot accommodate more drill pipe. This limits the offshore platform's drill pipe reserves. Frequent drill pipe replenishment operations increase transportation costs and time losses, and may even affect the continuity and efficiency of drilling operations due to untimely drill pipe supply. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a drill pipe transfer system and transfer method for an offshore platform, which solves the technical problems of low drill pipe transfer efficiency and single function.

[0006] (2) Technical solution

[0007] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] An embodiment of the present invention provides a drill rod transfer system for an offshore platform, which is used to transfer drill rods in a pipe string yard to a drilling floor, and includes a drill rod transport device, a drill rod transfer device and a traveling crane assembly; the drill rod transfer device is arranged on one side of the drilling floor, and the traveling crane assembly is installed on the drilling floor through a derrick; the drill rod transport device is arranged above the pipe string yard, and the drill rod transport device can grab the drill rods in the pipe string yard and move back and forth in front of the pipe string yard and the drilling floor; when the drill rod transport device moves, the drill rod transport device is used to clean and oil the drill rods, and then flip and lift them to a vertical state; the drill rod transfer device is used to grab the drill rods in the vertical state in the drill rod transport device and transfer them to the wellhead or rathole, and when transferred to the wellhead, cooperate with the traveling crane assembly to fasten the drill rods.

[0009] Preferably, the drill pipe transport device includes a frame, a grabbing mechanism, a moving mechanism, a supporting mechanism, a flipping and lifting mechanism, a first cleaning and buckling mechanism, a second cleaning and buckling mechanism and an oiling mechanism; the moving mechanism is arranged at the bottom end of the frame, and the moving mechanism can drive the frame to move back and forth in a straight line between the pipe string yard and the drilling floor; the grabbing mechanism, the supporting mechanism and the flipping and lifting mechanism are all arranged on the frame and are erected above the pipe string yard through the frame; the grabbing mechanism can move in the vertical direction to grab the drill pipe in the pipe string yard and place it on the supporting mechanism; the supporting mechanism The structure is slidably connected to the frame, and the supporting mechanism reciprocates along the moving direction of the moving mechanism to receive the drill rod grasped by the grasping mechanism. The supporting mechanism receives the drill rod and drives the drill rod to move to the cleaning position. The first cleaning buckle mechanism and the second cleaning buckle mechanism are respectively arranged on both sides of the length direction of the frame to clean the male buckle and the female buckle of the drill rod in the cleaning position respectively; the oiling mechanism is arranged on the first cleaning buckle mechanism for clamping and oiling the male buckle of the drill rod; the flip lifting mechanism is used to grab the cleaned horizontally placed drill rod on the support mechanism and lift and rotate it to a vertical state.

[0010] Preferably, the grabbing mechanism includes a connecting frame, a lifting assembly and a grabbing assembly; the lifting assembly is arranged on the frame through the connecting frame; the lifting assembly includes a first driving member, a guide rail and a slider, the slider is arranged on the connecting frame, the slider is slidably connected to the guide rail, and the grabbing assembly is arranged at the end of the guide rail; the guide rail extends in the vertical direction, and the first driving member drives the guide rail to slide along the vertical direction of the slider to drive the grabbing assembly to move up and down.

[0011] Preferably, the support mechanism includes a support frame, a second drive assembly and a drill rod moving assembly; the support frame is located above the frame body, the support frame is slidably connected to the frame body, the fixed end of the second drive assembly is connected to the frame body, and the second drive assembly drives the support frame to move back and forth along the moving direction of the frame body; the drill rod moving assembly is arranged on the support frame to support the drill rod and drive the drill rod to move along its axial direction, thereby bringing the male buckle of the drill rod close to the first clean buckle mechanism or bringing the female buckle of the drill rod close to the second clean buckle mechanism.

[0012] Preferably, the drill rod moving assembly includes an active rolling unit and a driven rolling unit, and the active rolling unit and the driven rolling unit are arranged at intervals; the active rolling unit includes an active roller and a first driven roller, and the rolling surfaces of the active roller and the first driven roller are arranged to form a V-shaped structure; the driven rolling unit includes a second driven roller and a third driven roller, and the rolling surfaces of the second driven roller and the third driven roller are arranged to form a V-shaped structure; the two V-shaped structures support the drill rod, and when the active roller rotates, the drill rod moves along its axial direction.

[0013] Preferably, the first cleaning mechanism includes a brush head assembly, an adjustment assembly and a revolution drive assembly; the adjustment assembly connects the brush head assembly and the revolution drive assembly; the rotation axis of the adjustment assembly is the revolution axis, and the adjustment assembly is used to adjust the offset of the axis of the brush head assembly and the revolution axis so that the head end of the brush head assembly fits on the threaded surface of the male or female buckle of the drill rod arranged coaxially with the revolution axis; the revolution drive assembly is used to drive the adjustment assembly and the brush head assembly with the head end fit on the threaded surface of the male or female buckle of the drill rod to rotate synchronously around the revolution axis, and the brush head assembly rotates synchronously when rotating around the revolution axis.

[0014] Preferably, the oiling mechanism includes two clamping jaws and two first drive assemblies; the two first drive assemblies are respectively arranged on the upper and lower sides of the first cleaning mechanism and are arranged one-to-one with the two clamping jaws; the first end of the first drive assembly is connected to the first cleaning mechanism, and the second end of the first drive assembly is connected to the clamping jaws; the two first drive assemblies simultaneously drive the clamping jaws to move toward each other so as to clamp on the circumference of the drill pipe male buckle; and lubricating oil is provided on the clamping sides of the two clamping jaws.

[0015] Preferably, the flipping and lifting mechanism includes a lifting assembly, a flipping assembly and a manipulator body; the lifting assembly includes a second telescopic member and a parallelogram folding unit, the top edge of the parallelogram folding unit is horizontally oriented, and the driving end of the second telescopic member is connected to one side of the parallelogram folding unit to switch the parallelogram folding unit between a folded state and a lifted state; the flipping assembly is arranged on the parallelogram folding unit, and the rotating end of the flipping assembly is connected to the manipulator body to drive the manipulator body to switch between a horizontal state and a vertical state; when the second telescopic member is in a retracted state, the parallelogram folding unit is folded, and the flipping assembly drives the manipulator body to be in a horizontal state to clamp the drill rod horizontally arranged on the support mechanism, and when the second telescopic member is extended, the parallelogram folding unit is in a lifted state, and the flipping assembly synchronously drives the manipulator body to flip the drill rod to a vertical state.

[0016] Preferably, the drill pipe transfer device includes a lifting assembly, a robotic arm assembly and a second clamp assembly; the lifting assembly is installed on one side of the drilling platform, one end of the robotic arm assembly is connected to the lifting assembly, and the other end of the robotic arm assembly is connected to the second clamp assembly; the lifting assembly can drive the robotic arm assembly to lift vertically, and the robotic arm assembly can drive the second clamp assembly to rotate on the horizontal plane to realize the transportation and handover of the drill pipe on and off the drilling platform.

[0017] The present invention also provides a transfer method for a drill pipe transfer system for an offshore platform, wherein the drill pipe is transferred by using the above-mentioned drill pipe transfer system for an offshore platform through the following steps:

[0018] S1. The drill pipe transport device moves to the pipe pile and clamps the drill pipe;

[0019] S2, the drill pipe transport device moves to the front of the drilling floor;

[0020] S3. During the drill rod transporting process, the drill rod transporting device moves the clamped drill rod to the other side of the clamping device, and the drill rod transporting device is used to clean and oil the drill rod;

[0021] S4. The drill pipe transport device lifts and rotates the cleaned and oiled drill pipe to a vertical position;

[0022] S5. The drill rod transfer device is used to grab the vertical drill rod in the drill rod transport device and transfer it to the wellhead or rathole. When transferred to the wellhead, it cooperates with the traveling hoist assembly to cross-lock the drill rod.

[0023] (3) Beneficial effects

[0024] The beneficial effects of the present invention are:

[0025] The drill pipe transport system for an offshore platform of the present invention comprises a drill pipe transport device, a drill pipe transfer device and a traveling crane assembly. The drill pipe transfer device is arranged on one side of the drilling floor, and the traveling crane assembly is installed on the drilling floor through a derrick. Since the drill pipe transport device is arranged above the pipe string yard, it does not need to occupy the position of the pipe yard, so that more drill pipes can be placed in the pipe yard, avoiding frequent drill pipe replenishment operations that increase transportation costs and time loss, thereby improving the continuity and efficiency of drilling operations. The drill pipe transport device can grab the drill pipe in the pipe string yard and move back and forth in front of the pipe string yard and the drill floor. When the drill pipe transport device moves, the drill pipe transport device is used to clean and oil the drill pipe, flip and lift it to a vertical state. The drill pipe transfer device is used to grab the drill pipe in the vertical state in the drill pipe transport device and transfer it to the wellhead or rathole. When transferred to the wellhead, it cooperates with the traveling crane assembly to perform the drill pipe cross-cutting, thereby realizing the transportation of the drill pipe from the pipe yard to the drill floor, completing the drill pipe assembly and the use of the drill bit in the oil drilling operation, realizing accurate grabbing, transportation, cleaning and oiling, lifting the drill pipe, vertically moving the drill pipe to the wellhead or rathole, and completing the cross-cutting operation at the wellhead position, and can complete the assembly of the drill tool and the drill bit cutting condition without manual intervention, thereby improving the operation efficiency and effectively avoiding the risks to personnel and equipment.

[0026] The present invention provides a transfer method for a drill pipe transfer system for an offshore platform, which simplifies the operation process and improves the automation level and coordination efficiency of the entire drilling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a drill pipe transfer system for an offshore platform;

[0028] Figure 2A schematic diagram of the structure of a drill pipe transfer system for an offshore platform (a drill pipe transfer device grabs a drill pipe in a vertical position in a drill pipe transport device);

[0029] Figure 3 This is a schematic diagram of the structure of the drill rod transport device from the first perspective (the grabbing mechanism grabs the drill rod);

[0030] Figure 4 This is a structural diagram of the drill rod transport device from the first perspective (the support mechanism carries the drill rod)

[0031] Figure 5 This is a structural schematic diagram of the drill pipe transportation device from a second perspective;

[0032] Figure 6 A schematic structural diagram of the drill pipe transport device from a third perspective (the flipping and lifting mechanism is not shown);

[0033] Figure 7 for Figure 6 A magnified schematic diagram of part A;

[0034] Figure 8 for Figure 6 An enlarged schematic diagram of part B;

[0035] Figure 9 Schematic diagram of the structure of the first cleaning buckle mechanism and the second cleaning buckle mechanism;

[0036] Figure 10 Schematic diagram of the structure of the first cleaning mechanism and the oiling mechanism;

[0037] Figure 11 It is a structural diagram of the oiling mechanism;

[0038] Figure 12 This is a structural diagram of the support mechanism driving the drill rod to move to the cleaning position;

[0039] Figure 13 This is a structural diagram of the drill rod moving assembly driving the drill rod to move to dock with the first cleaning mechanism (the oiling mechanism oils the male buckle of the drill rod);

[0040] Figure 14 for Figure 13 A magnified schematic diagram of part C;

[0041] Figure 15 This is a structural diagram of the drill rod moving assembly driving the drill rod to move to dock with the second cleaning mechanism;

[0042] Figure 16 It is a structural schematic diagram of the flip lifting mechanism in a folded state;

[0043] Figure 17 It is a structural schematic diagram of the lifting state of the flip lifting mechanism;

[0044] Figure 18 for Figure 17 An enlarged schematic diagram of part D in the middle;

[0045] Figure 19 for Figure 18 A structural diagram from another perspective;

[0046] Figure 20 for Figure 19 Front view of

[0047] Figure 21 It is a structural diagram of the flip lifting mechanism during the rising process;

[0048] Figure 22 It is a structural diagram of the further rise of the flip lifting mechanism;

[0049] Figure 23 for Figure 22 Structural diagram of the middle flip lifting mechanism lifted into place;

[0050] Figure 24 Schematic diagram of the structure of the drill pipe transfer device.

[0051] [Description of Reference Numerals]

[0052] 1: Drill rod transport device; 11: Frame; 12: Grabbing mechanism; 121: Connecting frame; 122: Lifting assembly; 123: Grabbing assembly; 13: Moving mechanism; 131: Track; 132: Moving wheel; 14: Support mechanism; 141: Support frame; 1411: Through hole; 142: Second driving assembly; 1421: Horizontal telescopic member; 1422: Moving guide rail; 1423: Roller; 143: Drill rod moving assembly; 14 31: Active rolling unit; 14311: Active roller; 14312: First driven roller; 1432: Driven rolling unit; 14321: Second driven roller; 14322: Third driven roller; 144: Limiting member; 15: Flip lifting mechanism; 151: Lifting assembly; 1511: Second telescopic member; 1512: Parallelogram folding unit; 15121: First connecting seat; 15122: Second connecting seat; 1 5123: First connecting member; 15124: Second connecting member; 15125: Third connecting member; 152: Flip assembly; 1521: Articulated frame; 1522: Pushing member; 1523: Flip plate; 15231: Weight reduction hole; 153: Manipulator body; 1531: Support column; 1532: First clamp assembly; 154: Support assembly; 1541: Support seat; 1542: Support arm; 1543: Third driving member; 155: Support base; 156: Bottom plate; 157: Rotating shaft; 158: Connecting shaft; 16: First cleaning mechanism; 161: Brush head assembly; 162: Adjusting assembly; 163: Revolutionary first driving assembly; 16': Second cleaning mechanism; 17: Oiling mechanism; 171: Clamping jaw; 172: First driving assembly; 1721: Fixed base; 1722: Third telescopic member; 1723: Parallelogram connecting rod; 18: Lifting mechanism;

[0053] 2: Drill rod transfer device; 21: Lifting assembly; 22: Robotic arm assembly; 23: Second clamp assembly;

[0054] 3: Traveling crane assembly;

[0055] 4: Pipe string yard;

[0056] 5: Drilling table;

[0057] 6: derrick;

[0058] 7: Drill rod. DETAILED DESCRIPTION

[0059] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0060] Example 1

[0061] like Figure 1-Figure 2As shown, an embodiment of the present invention provides a drill pipe transfer system for an offshore platform, which is used to transfer drill pipes 7 in a pipe string yard 4 to a drilling floor 5. The drill pipe transfer system includes a drill pipe transportation device 1, a drill pipe transfer device 2 and a traveling crane assembly 3. The drill pipe transfer device 2 is arranged on one side of the drilling floor 5, and the traveling crane assembly 3 is installed on the drilling floor 5 through a derrick 6.

[0062] Since the drill pipe transport device 1 is arranged above the pipe string yard 4, it does not need to occupy the pipe yard space, so that the pipe yard can place more drill pipes 7, avoiding frequent drill pipe 7 replenishment operations that increase transportation costs and time loss, thereby improving the continuity and efficiency of drilling operations.

[0063] When the drill pipe 7 is in the vertical position, the drill pipe 7 can be lifted up and the drilling tool 1 can be lifted up, thereby realizing the drilling tool 7 of the present invention being transported to the wellhead or the rathole.

[0064] like Figure 3-5 As shown, the drill rod transport device 1 includes a frame 11 , a gripping mechanism 12 , a moving mechanism 13 , a supporting mechanism 14 , a flipping and lifting mechanism 15 , a first cleaning and fastening mechanism 16 , a second cleaning and fastening mechanism 16 ′ and an oiling mechanism 17 .

[0065] The moving mechanism 13 is provided on the bottom end of the frame 11 , and the moving mechanism 13 can drive the frame 11 to move linearly back and forth between the pipe string yard 4 and the drilling floor 5 , thereby enabling the drill pipe 7 to be transported between the pipe string yard 4 and the drilling floor 5 .

[0066] The gripping mechanism 12, support mechanism 14, flipping and lifting mechanism 15, first cleaning mechanism 16, second cleaning mechanism 16', and oiling mechanism 17 are all mounted on the frame 11 and are supported above the pipe pile 4 via the frame 11, thereby not occupying space in the pipe pile 4. In this embodiment, the distance between the top of the frame 11 and the pipe pile 4 is greater than 3 meters. The gripping mechanism 12 can move vertically to grab the drill pipe 7 in the pipe pile 4 and place it on the support mechanism 14. The support mechanism 14 is slidably connected to the frame 11 and reciprocates along the movement direction of the moving mechanism 13 to receive the drill pipe 7 grabbed by the gripping mechanism 12. This eliminates the need for manual operation such as gripping, posture adjustment, and docking, thereby reducing labor costs and improving operational stability. By grabbing at low altitude and moving horizontally, the drill pipe 7 in the pipe string yard 4 is transported to the drilling floor 5, avoiding frequent high-altitude lifting and reducing the risk of collision of the drill pipe 7. Mechanized operation reduces human errors, further reduces the probability of damage to the drill pipe 7, and ensures the safety of operators.

[0067] The tilting and lifting mechanism 15 is used to grab the horizontally placed drill pipe 7 on the support mechanism 14 and lift it to a vertical position for gripping by the manipulator on the drilling floor 5. Compared with the single-function catwalk of existing systems, the drill pipe transfer system for offshore platforms can complete multiple operation steps in a single device, reducing the amount of equipment and floor space required, lowering the equipment and space costs of drilling operations, simplifying the operation process, and improving the automation level and collaborative efficiency of the entire drilling operation.

[0068] In this embodiment, the moving direction of the moving mechanism 13 is parallel to the width direction of the drill floor 5 , and the axial direction of the drill pipes 7 in the pipe string yard 4 is perpendicular to the moving direction of the moving mechanism 13 .

[0069] like Figure 4 As shown, the moving mechanism 13 includes a driving assembly, two rails 131 and a moving wheel 132 arranged at the bottom of the frame 11. The two rails 131 are spaced apart and arranged in parallel. The interval between the two rails 131 is greater than the length of the drill rod 7. The rails 131 extend along the moving direction of the moving mechanism 13, and the moving wheels 132 at both ends of the frame 11 are slidably connected to the two rails 131 respectively. The driving assembly drives the moving wheel 132 at the bottom of the frame 11 to move back and forth on the rails 131. The cooperation between the double rails 131 and the moving wheel 132 provides stable support, reduces shaking during operation, and ensures the safe transportation of the drill rod 7. Among them, the moving wheel 132 uses a rolling friction movement mode to reduce energy consumption, reduce maintenance requirements, and is suitable for long-term continuous operation.

[0070] like Figure 4As shown, the grabbing mechanism 12 includes a connecting frame 121, a lifting assembly 122 and a grabbing assembly 123. The lifting assembly 122 is arranged on the frame 11 through the connecting frame 121, wherein the lifting assembly 122 may include a driving member, a slide rail and a slider. The slider is arranged on the connecting frame 121, and the slider is slidably connected to the slide rail. The grabbing assembly 123 is arranged at the end of the slide rail. The slide rail extends in the vertical direction. The driving member drives the slide rail to slide along the vertical direction of the slider to drive the grabbing assembly 123 to move up and down. Through the sliding cooperation between the slide rail and the slider, the stable vertical movement of the grabbing assembly 123 is achieved, thereby improving the grabbing accuracy of the drill rod 7. It should be noted that the specific structure of the grabbing assembly 123 in the grabbing mechanism 12 is not specifically limited here. It can be selected according to actual needs, as long as it can achieve the grabbing function of the drill rod 7.

[0071] When the support mechanism 14 is in the receiving position, the support mechanism 14 can support and receive the drill rod 7 captured by the grabbing mechanism 12. The support mechanism 14 receives the drill rod 7 and drives the drill rod 7 to move to the cleaning position. The first cleaning buckle mechanism 16 and the second cleaning buckle mechanism 16' are respectively arranged on both sides of the length direction of the frame 11 to clean the male buckle and female buckle of the drill rod 7 in the cleaning position. Figure 5 and Figure 6 As shown, when the support mechanism 14 moves to the cleaning position, the threads on the male and female buckles at both ends of the drill pipe 7 are cleaned by the first cleaning mechanism 16 and the second cleaning mechanism 16', so that the device can complete the cleaning work on both ends of the drill pipe 7 while transporting the drill pipe 7, avoiding the situation in the prior art where the transportation and cleaning of the drill pipe 7 are separated and additional operations are required, which not only saves time but also ensures the cleanliness of the fastening part of the drill pipe 7, providing a guarantee for the smooth progress of subsequent drilling operations.

[0072] An oiling mechanism 17, mounted on the first screw cleaning mechanism 16, is used to clamp and oil the male screw of the drill pipe 7. This allows for timely oiling during the cleaning process, achieving an integrated cleaning and oiling operation. This drill pipe transport device 1 integrates multiple functions, including transport, cleaning the male and female screws of the drill pipe 7, oiling the male screw, and flipping and lifting the screw. Compared to existing catwalks with a single function, this device can complete multiple operational steps, reducing the amount of equipment and floor space required, lowering both equipment and space costs for drilling operations. It also simplifies the operational process and improves the automation and collaborative efficiency of the entire drilling operation.

[0073] like Figure 6 As shown, the first and second thread cleaning mechanisms 16 and 16' are identical in structure, differing only in their mounting locations. Furthermore, an oiling mechanism 17 is mounted on the first thread cleaning mechanism 16 via a mounting bracket to lubricate the outer surface of the pin of the drill rod 7. The thread cleaning mechanism is a device used to clean the threaded surface of the pin or box of the drill rod 7.

[0074] like Figure 9 As shown, regarding the first and second cleaning mechanisms 16 and 16' of this embodiment, their specific structures and working principles can be referred to the technical solutions described in the invention patent (application number: 202510338289.6). The first cleaning mechanism 16 includes a brush head assembly 161, an adjustment assembly 162, and a revolution drive assembly 163. The adjustment assembly 162 connects the brush head assembly 161 and the revolution drive assembly 163. The rotation axis of the adjustment assembly 162 is the revolution axis. The adjustment assembly 162 is used to adjust the offset between the axis of the brush head assembly 161 and the revolution axis so that the head end of the brush head assembly 161 is in contact with the threaded surface of the male or female thread of the drill rod 7 arranged coaxially with the revolution axis. The revolution drive assembly 163 is used to drive the adjustment assembly 162 and the brush head assembly 161, whose head end is in contact with the threaded surface, to rotate synchronously around the revolution axis. The brush head assembly 161 rotates synchronously with itself as it rotates around the revolution axis. The adjustment component 162 adjusts the radial offset of the axis of the brush head component 161 and the revolution axis in the revolution axis so that the head end of the brush head component 161 is adapted to fit the threaded surface of the male or female buckle of the drill rod 7 of different diameters. When the head end of the brush head component 161 fits on the threaded surface to be cleaned, the brush head component 161 can be driven by the revolution drive component 163 to rotate circumferentially around the drill rod 7 to be cleaned, and the brush head component 161 can rotate on its own to clean the drill rod 7, thereby achieving automatic cleaning of the male and female buckles of the drill rods 7 of different diameters, reducing the labor intensity of workers, and improving the cleaning efficiency and cleaning quality. It will not be repeated here. It is worth noting that the cleaning mechanism of the present application is not limited to the structure of the above-mentioned cited patent, and other technical solutions that can achieve the same cleaning function can also be adopted.

[0075] like Figure 10 、 Figure 11 、 Figure 13 and Figure 14 As shown, the oiling mechanism 17 includes two clamping jaws 171 and two first drive assemblies 172. The two first drive assemblies 172 are respectively arranged on the upper and lower sides of the first cleaning mechanism 16 and are arranged one-to-one with the two clamping jaws 171. The first end of the first drive assembly 172 is connected to the first cleaning mechanism 16, and the second end of the first drive assembly 172 is connected to the clamping jaws 171. The two first drive assemblies 172 simultaneously drive the clamping jaws 171 to move toward each other to clamp on the circumference of the male buckle of the drill rod 7. Lubricating oil is provided on the clamping side of the two clamping jaws 171. Figure 11As shown, the first drive assembly 172 includes a third telescopic member 1722, a fixed seat 1721 and two sets of parallelogram links 1723. The fixed seat 1721 is set on the mounting frame of the first cleaning mechanism 16. The two sets of parallelogram links 1723 are arranged in parallel, and the first sides are respectively hinged to the two sides of the fixed seat 1721. The two sets of parallelogram links 1723 are connected by a connecting rod. The fixed end of the third telescopic member 1722 is hinged to the fixed seat 1721, and the telescopic end of the third telescopic member 1722 is hinged to the connecting rod. The second sides of the parallelogram links 1723 are connected to the clamping claw 171. When the third telescopic parts 1722 of the two first drive assemblies 172 are extended, the upper and lower jaws 171 are close to and clamped on the circumference of the male buckle of the drill rod 7, wherein one side of the jaw 171 has an arc-shaped portion that matches the outer periphery of the male buckle of the drill rod 7, and a groove for accommodating lubricating oil is provided on the arc-shaped portion. When the jaw 171 is clamped on the outer periphery of the male buckle of the drill rod 7, the lubricating oil is coated on the outer periphery of the male buckle of the drill rod 7, thereby realizing contact oiling.

[0076] like Figure 6 As shown, the multifunctional drill rod transport device 1 also includes two lifting mechanisms 18. The first and second cleaning mechanisms 16, 16' are respectively mounted on the frame 11 via the two lifting mechanisms 18. The lifting mechanisms 18 on either side respectively drive the first and second cleaning mechanisms 16, 16' to move vertically upward and downward. By providing the lifting mechanisms 18, the height of the cleaning mechanisms can be flexibly adjusted according to the size of the drill rod 7 and operational requirements. When the drill rod 7 is transported to the cleaning position, the lifting mechanisms 18 drive the cleaning mechanisms to move vertically upward and downward, aligning the male and female snaps of the drill rod 7. Furthermore, the lifting function allows the cleaning mechanisms to be retracted when not in operation, reducing the space occupied by the equipment and improving the adaptability and safety of the device.

[0077] like Figure 6 As shown, the support mechanism 14 includes a support frame 141, a second drive assembly 142 and a drill rod moving assembly 143. The support frame 141 is located above the frame body 11, and the support frame 141 is slidably connected to the frame body 11. The fixed end of the second drive assembly 142 is connected to the frame body 11. The second drive assembly 142 drives the support frame 141 to reciprocate along the moving direction of the frame body 11. The drill rod moving assembly 143 is arranged on the support frame 141 to support the drill rod 7 and drive the drill rod 7 to move along its axial direction, thereby bringing the male buckle of the drill rod 7 close to the first clean buckle mechanism 16 or bringing the female buckle of the drill rod 7 close to the second clean buckle mechanism 16'. The second driving assembly 142 drives the support frame 141 to move along the frame body 11, transporting the drill rod 7 from the receiving and supporting position to the cleaning position. The drill rod moving assembly 143 further drives the drill rod 7 to move along the axis, so that the male buckle is aligned with the first cleaning buckle mechanism 16 or the female buckle is aligned with the second cleaning buckle mechanism 16'. There is no need to manually adjust the posture of the drill rod 7, which greatly improves the cleaning efficiency and automation level, ensuring that all parts of the drill rod 7 are effectively treated.

[0078] like Figure 7 and Figure 8 As shown, the drill rod movement assembly 143 includes an active rolling unit 1431 and a passive rolling unit 1432, which are spaced apart. The active rolling unit 1431 includes a driving roller 14311 and a first passive roller 14312. The rolling surfaces of the active roller 14311 and the first passive roller 14312 form a V-shaped structure. The passive rolling unit 1432 includes a second passive roller 14321 and a third passive roller 14322. The rolling surfaces of the second and third passive rollers 14321 and 14322 form a V-shaped structure. The two V-shaped structures support the drill rod 7. When the active roller 14311 rotates, the drill rod 7 moves along its axis. The rotation of the active roller 14311 drives the drill rod 7 to translate along its axis, and the contact friction between the V-shaped groove and the outer surface of the drill rod 7 achieves stable transmission. This structure is adaptable to drill rods 7 of varying diameters. At the same time, the V-shaped layout ensures that the drill rod 7 remains centered during movement, can be aligned with the buckle cleaning mechanism, and improves the stability of the movement of the drill rod 7.

[0079] like Figure 8 As shown, in this embodiment, the support mechanism 14 further includes two limiters 144, which are spaced apart on the support frame 141 along the axis of the drill rod 7. The limiters 144 define a U-shaped groove to limit the radial direction of the drill rod 7, preventing the drill rod 7 from shaking significantly during movement and causing it to fall off, thereby ensuring that the drill rod 7 always moves stably along the axis. A vertical gap is provided between the bottom wall of the U-shaped groove and the outer surface of the drill rod 7, allowing the drill rod 7 to be supported by a V-shaped structure, preventing direct contact and wear between the limiters 144 and the drill rod 7, thereby balancing the limiting function with the protection of the drill rod 7 and further improving the operational reliability of the device.

[0080] like Figure 12 As shown, two through holes 1411 are provided on the support frame 141 in the vertical direction, and the first cleaning buckle mechanism 16 and the second cleaning buckle mechanism 16' are arranged on the frame body 11. The first cleaning buckle mechanism 16 and the second cleaning buckle mechanism 16' are respectively opposite to the two through holes 1411 of the support frame 141. When the second driving assembly 142 drives the support frame 141 to move to the cleaning position, the two lifting mechanisms 18 respectively drive the first cleaning buckle mechanism 16 and the second cleaning buckle mechanism 16' to extend out of the two through holes 1411 and face the two ends of the drill rod 7.

[0081] like Figure 7 and Figure 8As shown, the second drive assembly 142 includes a horizontal telescopic member 1421, a movable guide rail 1422, and a roller 1423. The fixed end of the horizontal telescopic member 1421 is connected to the frame 11, and the telescopic end of the horizontal telescopic member 1421 is connected to the support frame 141. The movable guide rail 1422 is disposed on the frame 11 and extends along the direction of movement. The roller 1423 is disposed at the bottom end of the support frame 141 and is slidably connected to the movable guide rail 1422. The movable guide rail 1422 and the roller 1423 cooperate to guide and reduce frictional resistance, making the support frame 141 move more smoothly and accurately. To ensure smoother operation of the support frame 141.

[0082] like Figure 16 As shown, the flip-lift mechanism 15 is used to grab the cleaned drill rod 7 on the support mechanism 14, and the flip-lift assembly 151 includes a lifting assembly 151, a flip assembly 152, a manipulator body 153 and a supporting assembly 154. Among them, the lifting assembly 151 includes a second telescopic member 1511 and a parallelogram folding unit 1512. The top edge of the parallelogram folding unit 1512 is horizontally oriented. The driving end of the second telescopic member 1511 is connected to one side of the parallelogram folding unit 1512 so that the parallelogram folding unit 1512 can switch between a folded state and a lifted state. By providing the parallelogram folding unit 1512, when the second telescopic member 1511 retracts, the overall height of the manipulator is greatly reduced, forming a compact folded state, which is convenient for transportation and storage, and effectively solves the problem of large transportation space occupation and high cost caused by the fixed structure of the flip-lift manipulator in the prior art.

[0083] like Figure 17 As shown, the flip assembly 152 is arranged on the parallelogram folding unit 1512, and the rotating end of the flip assembly 152 is connected to the manipulator body 153 to drive the manipulator body 153 to switch between a horizontal state and a vertical state. When the second telescopic member 1511 is in the retracted state, the parallelogram folding unit 1512 is folded, and the flip assembly 152 drives the manipulator body 153 to a horizontal state to clamp the drill rod 7 horizontally arranged in the pipe yard. When the second telescopic member 1511 is extended, the parallelogram folding unit 1512 is in a lifted state, and the flip assembly 152 synchronously drives the manipulator body 153 to flip the drill rod 7 to a vertical state. When the parallelogram folding unit 1512 is unfolded to the lifted state, the manipulator body 153 synchronously drives the drill rod 7 to flip to a vertical state, reducing additional adjustment steps and improving the transportation efficiency of the drill rod 7. In the folded state, the manipulator body 153 remains horizontal, avoiding the risk of collision caused by structural protrusions during transportation. Compared with the existing technology, the oil drilling flip lifting mechanism 15 has the advantages of compact structure and convenient transportation, and is suitable for the efficient and automated operation requirements of modern oil drilling platforms.

[0084] like Figure 18 As shown, the parallelogram folding unit 1512 includes a first connecting seat 15121, a second connecting seat 15122, a first connecting member 15123, a second connecting member 15124, and a third connecting member 15125. The first connecting member 15123 and the third connecting member 15125 are arranged in parallel and spaced apart, and the first end of the first connecting member 15123 and the first end of the third connecting member 15125 are hinged to the first connecting seat 15121 and the second connecting seat 15122, respectively.

[0085] The second connecting member 15124 is arranged horizontally, the first end of the second connecting member 15124 is hinged to the second end of the first connecting member 15123, the second end of the second connecting member 15124 is hinged to the second end of the third connecting member 15125, and the driving end of the second telescopic member 1511 is hinged to the first connecting member 15123. Figure 20 As shown, when the second telescopic member 1511 is in the retracted state, the second connecting member 15124 and the third connecting member 15125 are folded above the first connecting member 15123, so that the overall height of the parallelogram folding unit 1512 is reduced.

[0086] like Figure 17 As shown, the flipping and lifting mechanism 15 also includes a base plate 156 and a support seat 155. The fixed end of the second telescopic member 1511 is connected to the base plate 156. The first connecting seat 15121, the second connecting seat 15122 and the support seat 155 are all arranged on the base plate 156. The support seat 155 is used to support the first connecting member 15123 in the folded state to prevent the parallelogram folding unit 1512 from sagging and deforming due to its own weight or external force, thereby extending the mechanical life.

[0087] Among them, the first connecting seat 15121 and the second connecting seat 15122 are arranged at intervals, the first end of the first connecting member 15123 is hinged to the first connecting seat 15121, the first end of the third connecting member 15125 is hinged to the second connecting seat 15122, and the lengths of the second connecting member 15124 and the third connecting member 15125 are adapted to the movement trajectory of the first connecting member 15123 to ensure that the movement trajectory of each component of the connecting rod assembly is smooth during folding or lifting, avoiding mutual collision or jamming.

[0088] In this embodiment, to ensure that the parallelogram folding unit 1512 in the lifting assembly 151 is fully folded and the overall height is minimized, the sum of the length of the first connecting member 15123, the distance between the first connecting seat 15121 and the second connecting seat 15122, and the sum of the lengths of the second connecting member 15124 and the third connecting member 15125 are equal. The height of the first connecting seat 15121 is higher than the height of the second connecting seat 15122. The lengths of the first connecting member 15123, the second connecting member 15124, and the third connecting member 15125 refer to the distances between their hinge points along their lengths, and the distance between the first connecting seat 15121 and the second connecting seat 15122 refers to the shortest distance perpendicular to their hinge points. The height of the first connecting seat 15121 and the height of the second connecting seat 15122 refer to the heights of their hinge points. The height difference between the hinge points ensures that the first and third connecting members are parallel and non-interfering when folded.

[0089] like Figure 18 As shown, the first connecting member 15123, the second connecting member 15124, and the third connecting member 15125 each include two parallel hinged columns and a connecting column connected between the two hinged columns. The two hinged columns each form a hinge point at either end. This combination of two hinged columns and a connecting column reduces weight while enhancing the bending and torsional strength of the connecting members, allowing them to withstand the heavy loads of the drill rod 7 when it is lifted, and preventing component breakage.

[0090] like Figure 18 and Figure 19 As shown, the flip assembly 152 includes an articulated frame 1521, a pusher 1522 and a flip plate 1523. The articulated frame 1521 is sleeved on the parallelogram folding unit 1512. The bottom end of the articulated frame 1521 is arranged parallel to the second connecting member 15124, and the two ends are respectively hinged to the first connecting member 15123 and the third connecting member 15125. The top of the articulated frame 1521 is higher than the second connecting member 15124. The articulated frame 1521 is hinged to the first hinge point of the flip plate 1523. The first end of the pusher 1522 is hinged to the second connecting member 15124. The second end of the pusher 1522 is hinged to the second hinge point of the flip plate 1523. The manipulator body 153 is arranged at the far end of the flip plate 1523 and is arranged vertically. The force arm is extended so that the clamping point is away from the flip center, reducing the flip resistance and facilitating the picking up of the drill rod 7 from the yard. Figure 20-23As shown, when the second telescopic member 1511 is extended, the second connecting member 15124 moves horizontally, driving the pusher 1522 to move relative to the hinge point on the hinge frame 1521. This causes the second end of the pusher 1522 to drive the flip plate 1523 to rotate about the first hinge point, switching the manipulator body 153 from a horizontal position to a vertical position. This flip and lift mechanism 15 can achieve both flipping and lifting actions by providing only a single drive member, saving production costs.

[0091] like Figure 17 As shown, the articulated frame 1521 is a triangular frame structure, with the top end of the articulated frame 1521 connected to the flip plate 1523 via a rotating shaft 157. The pusher 1522 is a rectangular frame structure, tilted, with a first end hinged to the second connecting member 15124. The second end of the pusher 1522 passes through the articulated frame 1521 and is connected to the flip plate 1523 via a connecting shaft 158. The first end of the connecting shaft 158 ​​is connected to the second end of the pusher 1522, and the second end of the connecting shaft 158 ​​is hinged to the flip plate 1523. The combined structure of the triangular articulated frame 1521 and the rectangular pusher 1522 improves torsional rigidity and reduces vibration during the flipping process, making it suitable for heavy-load flipping of large-diameter drill pipes 7.

[0092] like Figure 17 As shown, the flip plate 1523 is a triangular structure, the vertex of the flip plate 1523 forms a first hinge point, the bottom edge of the flip plate 1523 is connected to the manipulator body 153, and at least one weight-reducing hole 15231 is provided on the flip plate 1523. The weight-reducing hole 15231 reduces the weight of the flip plate 1523 and reduces the driving load of the flip assembly 152.

[0093] like Figure 17 As shown, the support assembly 154 includes a support base 1541, a support arm 1542, and a third drive member 1543. The support base 1541 is mounted on the base plate 156 via a connecting base. The first end of the support arm 1542 is hingedly connected to the support base 1541. The fixed end of the third drive member 1543 is connected to the support base 1541. The telescopic end of the third drive member 1543 is hingedly connected to the bottom end of the support arm 1542. The third drive member 1543 drives the support arm 1542 to rotate about the support base 1541 to a horizontal position to support the drill rod 7 in the vertical position. After the drill rod 7 is flipped to the vertical position, the support arm 1542 provides additional support to prevent the drill rod 7 from falling due to loosening of the grip of the manipulator body 153 during the handover, thereby improving operational safety.

[0094] like Figure 22As shown, the manipulator body 153 includes a support 1531 and two first clamp assemblies 1532. The support 1531 is connected to the flip mechanism, and the two first clamp assemblies 1532 are mounted at both ends of the support 1531. The first clamp assemblies 1532 clamp the drill rod 7. The specific structure and clamping principle of the manipulator body 153 are not detailed here. The specific structure and clamping principle of the manipulator body 153 can be referred to the composite clamp disclosed in Publication No. CNCN119550266A.

[0095] like Figure 24 As shown, the drill pipe transfer device 2 includes a lifting assembly 21, a mechanical arm assembly 22, and a second clamp assembly 23. The lifting assembly 21 is installed on one side of the drilling floor 5. One end of the mechanical arm assembly 22 is connected to the lifting assembly 21, and the other end of the mechanical arm assembly 22 is connected to the second clamp assembly 23. The lifting assembly 21 can drive the mechanical arm assembly 22 to rise and fall vertically, and the mechanical arm assembly 22 can drive the second clamp assembly 23 to rotate horizontally to achieve the transportation and transfer of drill pipe 7 to and from the drilling platform. The lifting assembly 21 includes support columns, a pulley, and a lifting hydraulic cylinder. The two support columns are arranged opposite each other, the pulley is slidably connected to the support columns, and the driving end of the lifting hydraulic cylinder is connected to the pulley. The extension and retraction of the driving end of the lifting hydraulic cylinder drive the second clamp assembly 23 on the mechanical arm assembly 22 to rise and fall vertically. The pulley is hinged to the first end of the connecting mechanical arm assembly 22, and the second end of the mechanical arm assembly 22 is hinged to the second clamp assembly 23. The mechanical arm assembly 22 drives the second clamp assembly 23 to rotate and retract, thereby realizing the handover and transportation of the drill rod 7.

[0096] Example 2

[0097] This embodiment provides a drill pipe transfer method for an offshore platform, which uses the drill pipe transfer system for an offshore platform in the first embodiment, and transfers the drill pipe 7 through the following steps:

[0098] S1. The moving mechanism 13 of the drill pipe transport device 1 drives the frame 11 to move to the pipe string yard 4, and the grabbing mechanism 12 can move in the vertical direction to grab the drill pipe 7 in the pipe string yard 4 to place it on the supporting mechanism 14. The lifting assembly 122 in the grabbing mechanism 12 drives the grabbing assembly 123 to descend and grab the drill pipe 7. After grabbing the drill pipe 7, the lifting assembly 122 drives the grabbing assembly 123 to rise. At this time, the second driving assembly 142 of the supporting mechanism 14 drives the supporting frame 141 to move horizontally out to the receiving position, that is, below the grabbing assembly 123. The lifting assembly 122 drives the grabbing assembly 123 to move downward, and the grabbing assembly 123 is opened to place the drill pipe 7 on the drill pipe moving assembly 143. The lifting assembly 122 drives the grabbing assembly 123 to move upward to avoid it.

[0099] S2, the moving mechanism 13 of the drill rod transport device 1 drives the frame 11 to move to the front of the drilling floor 5;

[0100] S3. During the process of the drill rod transport device 1, the second driving assembly 142 of the support mechanism 14 of the drill rod transport device 1 drives the support frame 141 to move horizontally to the cleaning position, and the lifting mechanism 18 drives the cleaning buckle mechanism to extend from the through hole 1411 of the support frame 141, facing the male buckle and female buckle at both ends of the drill rod 7; Figure 13 As shown, the drill rod moving assembly 143 drives the drill rod 7 to approach the first cleaning buckle mechanism 16, and the first cleaning buckle mechanism 16 cleans the male buckle of the drill rod 7, as shown in FIG. Figure 14 As shown, the oiling mechanism 17 clamps and oils the male buckle of the drill rod 7. When the male buckle of the drill rod 7 is cleaned, as shown in FIG. Figure 15 As shown, the drill rod moving assembly 143 drives the drill rod 7 to move close to the second cleaning buckle mechanism 16 ′, and the second cleaning buckle mechanism 16 ′ cleans the female buckle of the drill rod 7;

[0101] S4. The flipping and lifting mechanism 15 of the drill rod transporting device 1 is used to grab the horizontally placed drill rod 7 on the support mechanism 14 and lift and rotate it to a vertical position. Specifically, when the second telescopic member 1511 of the lifting assembly 151 is in a retracted state, the parallelogram folding unit 1512 is folded, and the flipping assembly 152 drives the manipulator body 153 to a horizontal position to grab the cleaned horizontally placed drill rod 7 on the support assembly. When the second telescopic member 1511 is extended, the folding unit of the parallelogram connecting rod 1723 is in a lifted state, and the flipping assembly 152 synchronously drives the manipulator body 153 to flip the drill rod 7 to a vertical position.

[0102] S5. The drill rod transfer device 2 is used to grab the drill rod 7 in the vertical state in the drill rod transportation device 1 and transfer it to the wellhead or rathole. When transferred to the wellhead, it cooperates with the traveling hoist assembly 3 to buckle the drill rod 7.

[0103] The drill pipe 7 transfer method for an offshore platform provided in this embodiment can complete multiple operation steps, simplify the operation process, and improve the automation level and coordination efficiency of the entire drilling operation.

[0104] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A drill pipe transfer system for an offshore platform, used for transferring drill pipes (7) from a pipe pile (4) to a drilling floor (5), characterized in that: It comprises a drill rod transport device (1), a drill rod transfer device (2) and a traveling crane assembly (3); The drill rod transfer device (2) is arranged on one side of the drilling floor (5), and the traveling crane assembly (3) is installed on the drilling floor (5) through a derrick (6); The drill rod transport device (1) is arranged above the pipe string yard (4), and the drill rod transport device (1) can grab the drill rods (7) in the pipe string yard (4) and move back and forth in front of the pipe string yard (4) and the drilling floor (5). When the drill rod transport device (1) moves, the drill rod transport device (1) is used to clean and oil the drill rods (7) and then flip and lift them to a vertical state; The drill rod transfer device (2) is used to grab the drill rod (7) in a vertical state in the drill rod transport device (1) and transfer it to the wellhead or rathole. When transferred to the wellhead, the drill rod (7) is fastened in conjunction with the traveling hoist assembly (3).

2. The drill pipe transfer system for an offshore platform according to claim 1, wherein: The drill rod transport device (1) comprises a frame (11), a grabbing mechanism (12), a moving mechanism (13), a supporting mechanism (14), a flipping and lifting mechanism (15), a first cleaning mechanism (16), a second cleaning mechanism (16') and an oiling mechanism (17); The moving mechanism (13) is arranged at the bottom end of the frame (11), and the moving mechanism (13) can drive the frame (11) to move back and forth in a straight line between the pipe string yard (4) and the drilling floor (5); The grabbing mechanism (12), the supporting mechanism (14) and the flipping and lifting mechanism (15) are all arranged on the frame (11) and are erected above the pipe string yard (4) through the frame (11); The grabbing mechanism (12) is capable of moving in a vertical direction to grab the drill pipe (7) in the pipe string pile (4) and place it on the supporting mechanism (14); The support mechanism (14) is slidably connected to the frame (11), and the support mechanism (14) reciprocates along the moving direction of the moving mechanism (13) to receive the drill rod (7) captured by the capture mechanism (12). The support mechanism (14) receives the drill rod (7) and drives the drill rod (7) to move to the cleaning position. The first cleaning buckle mechanism (16) and the second cleaning buckle mechanism (16') are respectively arranged on both sides of the length direction of the frame (11) to clean the male buckle and the female buckle of the drill rod (7) at the cleaning position respectively. The oiling mechanism (17) is arranged on the first cleaning mechanism (16) and is used for oiling the male clamp of the drill rod (7); The flipping and lifting mechanism (15) is used to grab the cleaned horizontally placed drill rod (7) on the support mechanism (14) and lift and rotate it to a vertical state.

3. The drill pipe transfer system for an offshore platform according to claim 2, wherein: The grabbing mechanism (12) comprises a connecting frame (121), a lifting assembly (122) and a grabbing assembly (123); The lifting assembly (122) is arranged on the frame (11) through the connecting frame (121); The lifting assembly (122) includes a first driving member, a guide rail and a slider, the slider is arranged on the connecting frame (121), the slider is slidably connected to the guide rail, and the grabbing assembly (123) is arranged at the end of the guide rail; The guide rail extends in a vertical direction, and the first driving member drives the guide rail to slide in the vertical direction of the slider to drive the grabbing assembly (123) to move up and down.

4. The drill pipe transfer system for an offshore platform according to claim 2, wherein: The support mechanism (14) includes a support frame (141), a second drive assembly (142) and a drill rod moving assembly (143); The support frame (141) is located above the frame body (11), the support frame (141) is slidably connected to the frame body (11), the fixed end of the second driving component (142) is connected to the frame body (11), and the second driving component (142) drives the support frame (141) to reciprocate along the moving direction of the frame body (11); The drill rod moving assembly (143) is arranged on the support frame (141) to support the drill rod (7) and drive the drill rod (7) to move along its axial direction, thereby bringing the male buckle of the drill rod (7) close to the first clean buckle mechanism (16) or bringing the female buckle of the drill rod (7) close to the second clean buckle mechanism (16').

5. The drill pipe transfer system for an offshore platform according to claim 4, characterized in that: The drill rod moving assembly (143) comprises an active rolling unit (1431) and a driven rolling unit (1432), wherein the active rolling unit (1431) and the driven rolling unit (1432) are arranged at intervals; The active rolling unit (1431) comprises an active roller (14311) and a first driven roller (14312), wherein the rolling surfaces of the active roller (14311) and the first driven roller (14312) are arranged to form a V-shaped structure; The driven rolling unit (1432) comprises a second driven roller (14321) and a third driven roller (14322), wherein the rolling surfaces of the second driven roller (14321) and the third driven roller (14322) are arranged to form a V-shaped structure; The two V-shaped structures support the drill rod (7), and when the active roller (14311) rotates, the drill rod (7) moves along its axial direction.

6. The drill pipe transfer system for an offshore platform according to claim 2, wherein: The first cleaning mechanism (16) comprises a brush head assembly (161), an adjustment assembly (162) and a revolution drive assembly (63); The adjustment component (162) is connected to the brush head component (161) and the revolution drive component (63); The rotation axis of the adjustment assembly (162) is the revolution axis, and the adjustment assembly (162) is used to adjust the offset between the axis of the brush head assembly (161) and the revolution axis, so that the head end of the brush head assembly (161) fits on the threaded surface of the male buckle or female buckle of the drill rod (7) arranged coaxially with the revolution axis; The revolution drive assembly (63) is used to drive the adjustment assembly (162) and the brush head assembly (161) on the threaded surface of the male buckle or female buckle of the drill rod (7) to rotate synchronously around the revolution axis, and the brush head assembly (161) rotates synchronously when rotating around the revolution axis.

7. The drill pipe transfer system for an offshore platform according to claim 2, wherein: The oiling mechanism (17) comprises two clamping jaws (171) and two first driving assemblies (172); The two first driving components (172) are respectively arranged on the upper and lower sides of the first cleaning mechanism (16) and are arranged in a one-to-one correspondence with the two clamping claws (171); The first end of the first driving component (172) is connected to the first cleaning mechanism (16), and the second end of the first driving component (172) is connected to the clamping claw (171); The two first drive assemblies (172) simultaneously drive the clamping jaws (171) to move toward each other so as to clamp the drill rod (7) in the circumferential direction of the male buckle; The clamping sides of the two clamping jaws (171) are provided with lubricating oil.

8. The drill pipe transfer system for an offshore platform according to claim 2, wherein: The flipping and lifting mechanism (15) comprises a lifting component (151), a flipping component (152) and a manipulator body (153); The lifting assembly (151) comprises a second telescopic member (1511) and a parallelogram folding unit (1512), the top edge of the parallelogram folding unit (1512) being arranged in a horizontal orientation, and a driving end of the second telescopic member (1511) being connected to one side of the parallelogram folding unit (1512) so as to enable the parallelogram folding unit (1512) to switch between a folded state and a lifted state; The flip assembly (152) is arranged on the parallelogram folding unit (1512), and the rotating end of the flip assembly (152) is connected to the manipulator body (153) to drive the manipulator body (153) to switch between a horizontal state and a vertical state; When the second telescopic member (1511) is in a retracted state, the parallelogram folding unit (1512) is folded, and the flip assembly (152) drives the manipulator body (153) to be in a horizontal state to clamp the drill rod (7) horizontally arranged on the support mechanism (14); when the second telescopic member (1511) is extended, the parallelogram folding unit (1512) is in a lifted state, and the flip assembly (152) synchronously drives the manipulator body (153) to drive the drill rod (7) to flip to a vertical state.

9. The drill pipe transfer system for an offshore platform according to claim 1, wherein: The drill rod transfer device (2) comprises a lifting assembly (21), a mechanical arm assembly (22) and a second clamp assembly (23); The lifting assembly (21) is installed on one side of the drilling floor (5), one end of the mechanical arm assembly (22) is connected to the lifting assembly (21), and the other end of the mechanical arm assembly (22) is connected to the second clamp assembly (23); The lifting assembly (21) can drive the mechanical arm assembly (22) to lift vertically, and the mechanical arm assembly (22) can drive the second clamp assembly (23) to rotate on the horizontal plane, so as to realize the transportation and transfer of the drill pipe (7) on and off the drilling platform.

10. A method for transferring a drill pipe transfer system for an offshore platform, characterized in that: Using the drill pipe transfer system for an offshore platform according to any one of claims 1 to 9, the drill pipe (7) is transferred through the following steps: S1, the drill pipe transport device (1) moves to the pipe string pile (4) and clamps the drill pipe (7); S2, the drill rod transport device (1) moves to the front of the drilling floor (5); S3. During the process of the drill rod transport device (1), the drill rod transport device (1) moves the clamped drill rod (7) to the other side of the clamping, and the drill rod transport device (1) is used to clean and oil the drill rod (7); S4, the drill rod transport device (1) lifts and rotates the cleaned and oiled drill rod (7) to a vertical state; S5. The drill rod transfer device (2) is used to grab the drill rod (7) in the vertical state in the drill rod transportation device (1) and transfer it to the wellhead or rathole. When transferred to the wellhead, the drill rod (7) is fastened in conjunction with the traveling hoist assembly (3).

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