Multi-steel-rope type drilling machine traveling and hoisting system

Abstract

The invention discloses a multi-steel-rope type drilling machine traveling crane system which comprises at least two sets of steel rope lifting systems, each set of steel rope lifting system comprises a crown block, a traveling block, a roller and a steel wire rope, the crown block is used for being arranged above a wellhead, the traveling block is located below the crown block, and the roller is arranged above the crown block. The roller is arranged on one side of the crown block and connected with a power rotating device, the steel wire rope is wound, one end of the steel wire rope is fixed to the roller, and the other end of the steel wire rope passes through the crown block and the traveling block and is used for being fixed to a dead rope fixing end on the other side of the crown block. And each group of steel rope lifting system can operate independently, or each group of steel rope lifting system is linked with each other so as to operate together. Left and right sides of the crown block and the traveling block are connected with the fast ropes, so that abrasion of two sides is balanced when the pulley works, system balance is kept, times of reversing a large rope are reduced, and service life and operation efficiency of the large rope are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling rig lifting devices, in particular to a multi-steel rope type drilling rig traveling hoisting system. Background Art

[0002] The existing oil rig lifting system consists of a crown block, a traveling block, a dead rope holder, a winch, and a wire rope. One end of the wire rope is fixed to the dead rope holder, the middle part of the wire rope is supported by the crown block pulley and the traveling block and the big hook are suspended thereon, and the other end of the wire rope is fixed to the drum of the winch. Only one set of wire ropes is used for lifting in the lifting system, and the lifting speed is slow. The pulleys on the left and right sides of the crown block and the traveling block are connected to the dead rope on one side and the fast rope on the other side. The pulleys wear unevenly, the lifting is not stable, and the equipment has a low fault tolerance.

[0003] Semi-submersible drilling platforms are powerful tools for deep-sea oil and gas resource exploration and development, and a large number of new technologies are reflected in semi-submersible platforms. As for the rig hoisting system, the hoisting system on the more common semi-submersible drilling platform is similar to the conventional hoisting system, including winches, traveling crane systems and derricks. Only one set of wire ropes is used for hoisting in the hoisting system, and the hoisting speed is slow and the equipment redundancy is low. Since the semi-submersible platform is affected by wind, waves and currents and has heave changes, in order to ensure the normal drilling operation, the heave compensation device has become standard on the platform. The more common way is to add a crown block fixed pulley compensation device to the crown block fixed pulley of the traveling crane system, but the device is located at the top of the derrick, which will cause the overall center of gravity of the platform to rise and the stability to decrease. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-wire drilling rig traveling hoist system to solve the problem that only one set of wire ropes is used for lifting in the above-mentioned lifting system, resulting in slow lifting speed and reduced stability.

[0005] The technical solution adopted by the present invention is as follows: A multi-wire drilling rig travel and hoisting system, comprising a wire rope hoisting system, wherein the wire rope hoisting system is provided with at least two groups, each group of the wire rope hoisting system comprises a crown block, a traveling block, a drum and a wire rope, wherein the crown block is used to be arranged above a wellhead, the traveling block is located below the crown block, the drum is arranged on one side of the crown block, the drum is connected with a power rotating device, the wire rope is wound and one end is fixed on the drum, and the other end of the wire rope passes through the crown block and the traveling block and is used to be fixed to a dead rope fixed end on the other side of the crown block; Each group of the steel rope lifting systems can operate independently, or each group of the steel rope lifting systems can be interconnected to operate together.

[0006] Specifically, by at least two sets of steel wire ropes, the load weight of the traveling crane system can be distributed to at least two sets of steel wire ropes, and each motor only needs to bear a part of the load. In this way, at least two drums can work synchronously, and each power rotating device can operate at a higher efficiency under its smaller load. At the same time, since each power rotating device can provide a certain power, when multiple devices are used, the total output power of the system increases. Therefore, a faster operating speed can be supported. In addition, when a set of steel wire ropes is lifted from both sides at the same time, if the lifting speed or force on both sides does not match, it will cause uneven tension on the steel wire ropes. This uneven tension will produce additional stress inside the steel wire rope, which may cause structural damage to the steel wire rope and even cause the steel wire rope to be scrapped. In a system with multiple sets of steel wire ropes, the load is evenly distributed on all ropes. Each set of steel wire ropes correctly bears its due share, and the tension will be relatively uniform, reducing the damage caused by uneven tension. And by at least two sets of steel wire ropes, the weight of the load is evenly distributed on two or more points. It helps ensure that each power rotating device bears the same load, thereby reducing imbalance caused by uneven load and helping to maintain system stability. It can also reduce energy loss caused by unbalanced torque, thereby improving the operating efficiency of the system. Because the load is dispersed over multiple wire ropes, the wear of each rope can also be reduced, which can maintain efficient operation for a longer time.

[0007] The wire rope hoisting system can operate independently or in linkage with each other, which means that the wire rope hoisting system can be in linkage and joint operation state, or it can be in independent operation and can be selected to use all or part of the wire ropes according to different drilling conditions during drilling process to achieve multiple changes of rope system, adjust the speed of the traveling hoisting system to a large extent, ensure that the drum winch motor always operates in the high efficiency area, improve the operating efficiency, and thus achieve compensation for the platform heave. If a power unit or wire rope has a problem, other devices can continue to work, which improves the reliability of the system. It ensures that the system can operate continuously and reduces downtime.

[0008] Optionally, the drums of the steel rope hoisting system are arranged side by side on the same side of the overhead travelling crane; The power rotating device is a winch, and the two drums are connected to a winch together, or each drum is connected to a winch separately. The winch can provide a large lifting force and is suitable for applications that require a lot of force to lift heavy objects. At least two drums are connected to a winch together to reduce the number of equipment and simplify the design and operation of the system. And the drums are controlled by the same winch, which can ensure that they remain coordinated during the lifting process and reduce the complexity of operation. If each drum is connected to a winch separately, if one drum fails, the other drums can still work independently, which improves the safety and reliability of the system. In the case of being connected to a winch together, the drums can be multiple drums arranged as one, or multiple drums connected as one through a coupling. In the case of being connected to winches separately, the drums can be connected by a coupling so that they can be connected as one when they need to work together to achieve synchronous operation; when they are running separately, the coupling can be disassembled and run separately.

[0009] Optionally, the two rollers are arranged in parallel, and the rotation axis of each roller is parallel to each other and to the rotation axis of the overhead travelling crane; Alternatively, the two rollers are coaxially arranged, and the rotation axis of each roller is parallel to each other and to the rotation axis of the overhead traveling vehicle.

[0010] Specifically, when the drum is parallel to the overhead crane, the movement path of the wire rope on the pulley and drum is straight, which can minimize friction and wear and extend the service life of the equipment. It can also ensure that the force is efficiently transmitted along the axis of the wire rope and reduce energy loss caused by angular deviation. It also helps to maintain the balance of the system and reduce vibration and instability caused by unbalanced torque.

[0011] Optionally, it also includes a suspension member and a first load-bearing connecting member; The suspension member is used to be arranged just above the wellhead and installed on the derrick, each set of the crown block comprises at least one fixed pulley, the fixed pulley is detachably connected to the suspension member, and the fixed pulleys of the two sets of crown blocks are symmetrical about the center line of the wellhead; The traveling block includes at least one movable pulley, the lower end of which is detachably connected to the first load-bearing connector, and the two groups of movable pulleys of the traveling block are symmetrical about the center line of the wellhead.

[0012] The suspension is located just above the wellhead and installed on the derrick to support the overhead crane system. The fixed pulley of the overhead crane and the movable pulley of the traveling carriage are symmetrical about the center line of the wellhead, ensuring the balance of the rope during lifting and lowering. The first load-bearing connector connects the movable pulley of the traveling carriage and the device to be lifted, so that items such as drilling tools can be lifted and lowered through the pulley system. Among them, the movable pulley of the traveling carriage is jointly connected to the first load-bearing connector, so that two sets of traveling lifting systems can jointly operate the device to be lifted. When there are more than two fixed pulleys and movable pulleys, they are detachably connected, so that the number of pulleys can be quickly adjusted according to the needs of the drilling operation to achieve changes in speed and load-bearing capacity to adapt to different drilling depths and weights, so that the drilling rig can operate in the best working condition.

[0013] Optionally, it also includes a translation device, a crown block coupling and a second load-bearing connection member; The crane is connected to the derrick in a horizontal sliding manner, and two sets of cranes are detachably connected through the crane coupling. The translation device is installed on the derrick and connected to each set of cranes, and can push the cranes to reciprocate in the horizontal direction, so that the center line of each set of cranes or the center lines of the two sets of cranes are aligned with the center line of the wellhead. The second load-bearing connecting member is arranged below the traveling carriage, and two groups of the traveling carriages are detachably connected via the load-bearing connecting member.

[0014] In this mode, only part of the wire rope lifting system can be used. When the wire ropes on both sides are working, the center line of the overhead crane is aligned with the center line of the wellhead, and the overhead cranes are connected by couplings to achieve synchronous operation. When only the wire ropes on one side are in use, the center position of the entire overhead crane changes and is no longer aligned with the center of the wellbore. Therefore, it is necessary to move the overhead crane horizontally through a translation device to readjust the position so that its center direction is aligned with the center of the wellbore. Specifically, in this mode, since only one side of the wire rope lifting system needs to be used, the couplings between the overhead cranes and between the drums need to be disconnected to prevent structural interference. The overhead crane and the traveling carriage are detachable, so they can be removed when a certain set of wire rope lifting systems is not in use.

[0015] Optionally, the translation device includes a bearing platform, on which a slide rail is arranged in a horizontal direction, on which the overhead crane is arranged, and between which a hydraulic cylinder is arranged, and between which the overhead crane and the bearing platform are arranged, and which drives the overhead crane to move along the slide rail. The bearing platform is the foundation of the entire translation device, and bears the weight and dynamic loads in the drilling operation. The slide rail is fixed on the bearing platform, and provides a moving path for the overhead crane, and the overhead crane can move in the horizontal direction. The hydraulic cylinder is used to drive the movement of the overhead crane on the slide rail, which reduces the labor intensity and potential safety risks of manual adjustment. Among them, the coupling between the overhead cranes can be connected or disconnected by remote control.

[0016] Optionally, the upper part of the second bearing connection piece is provided with a plurality of interfaces, and the traveling carriage is detachably connected to the interfaces via a pin shaft; when multiple groups of the traveling carriages are connected to the second bearing connection piece, the interfaces connected to the traveling carriages are symmetrical along the center line of the second bearing connection piece; when a group of the traveling carriages is connected to the second bearing connection piece, the interfaces connected to the traveling carriages are located at the center line of the second bearing connection piece. Since the traveling carriages on both sides are located on both sides of the second bearing connection piece when the steel rope lifting system is used, when only one side of the steel rope lifting system is used, it is necessary to disassemble the connection between the traveling carriage and the second bearing connection piece, adjust the installation position and connect with different interfaces, so that the traveling carriage is centered on the second bearing connection piece to ensure that the drilling tool remains vertical when it is lowered into the wellhead.

[0017] Optionally, each group of the overhead travelling crane includes at least one fixed pulley, and all the fixed pulleys are connected as a whole; or, each group of the fixed pulleys are connected as a whole; or, each fixed pulley is provided separately; Each group of the traveling carriages comprises at least one movable pulley, and all the movable pulleys are connected as a whole; or, each group of the movable pulleys are connected as a whole; or, each movable pulley is provided separately.

[0018] As the most basic case, the wire rope hoisting system is only linked to each other so that it can operate together. In this case, it is not split, and the traveling block and the overhead crane of each group can be connected as a whole to achieve stable operation. In the second case, the wire rope hoisting system is also only linked to each other so that it can operate together, but the fixed pulley and the movable pulley are set separately. The number of pulleys can be quickly adjusted according to the needs of the drilling operation to achieve changes in speed and load-bearing capacity to adapt to different drilling depths and weights, so that the drilling rig can operate in the best working condition. When the wire rope hoisting system can operate independently, each group of the pulleys can be connected as a whole to facilitate movement to the center of the wellhead. Among them, the connection as a whole can be an integrated design or a fixed connection as a whole.

[0019] Optionally, a dead rope fixing device is further included, and at least two of the dead rope fixing ends are jointly arranged on one dead rope fixing device, or each of the dead rope fixing ends is correspondingly arranged on one of the dead rope fixing devices. At least two of the dead rope fixing ends are jointly arranged on one dead rope fixing device, which can simplify the structure of the system; each of the dead rope fixing ends is separately arranged on a dead rope fixing device, so that each dead rope has independent protection, and the system is more reliable. Even if one fixing device fails, the other fixing devices can still remain safe.

[0020] Optionally, when there are at least two dead rope fixers, the dead rope fixers are arranged in parallel along the axial direction of the overhead travelling crane. The parallel arrangement helps to maintain the parallelism between the steel wire ropes, ensures that the tension on each steel wire rope is evenly distributed, and avoids mutual interference and wear between the steel wire ropes.

[0021] A method for threading a multi-steel rope type swimming system, comprising the following steps: Install the left wire rope: The wire rope is fixed from the left drum, passed through the pulleys of the left overhead crane and traveling carriage, and finally clamped; Install the right wire rope: The wire rope is fixed from the right drum, passed through the pulleys of the right overhead crane and traveling block, and finally clamped; The steel wire ropes on both sides are symmetrically wound along the center of the wellhead.

[0022] If the wire ropes on both sides are wound in the same direction, they will generate torque in the same direction on the hoisting system. Specifically, it will cause the pulley of the hoisting system to produce a rotation effect, which may cause instability in the system. When the wire ropes on both sides are wound symmetrically along the center of the wellhead, the torques they generate on the pulley are in opposite directions, thus canceling each other out, helping to balance the torque on the pulley and keep the pulley stable. The pulley does not need additional energy to counter the rotation effect, which helps to improve the overall efficiency of the system.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The multi-wire drilling rig traveling hoist system provided by the present invention uses multiple sets of wire rope systems to work simultaneously. The pulleys on the left and right sides of the crown block and the traveling block are connected with fast ropes, which can make the wear on both sides of the traveling block and the crown block pulley balanced when working, maintain the balance of the system, reduce the number of times the big rope is reversed, and effectively improve the life of the big rope and the working efficiency.

[0024] 2. The multi-wire drilling rig traveling hoisting system provided by the present invention can realize multiple changes of the rope system according to different drilling conditions during the drilling process by selecting to use multiple groups or several groups or one group of wire ropes, thereby adjusting the speed of the traveling hoisting system to a large extent, ensuring that the drum winch motor always operates in the high-efficiency area, improving the operating efficiency, and thus achieving compensation for the rise and fall of the platform.

[0025] 3. The multi-wire drilling rig travel hoist system provided by the present invention can serve as backup for each other between multiple sets of wire rope lifting systems, reducing the non-operating time caused by the failure of a single set of travel hoist systems and making the drilling rig lifting device fault-tolerant. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 It is a structural diagram of embodiment 1.

[0027] Figure 2 It is a structural diagram of the second embodiment.

[0028] Figure 3 It is a structural diagram of embodiment 3.

[0029] Figure 4 It is a modified right view of the third embodiment.

[0030] Figure 5 It is a modified left view of the third embodiment.

[0031] Figure 6 It is a structural diagram of embodiment 4.

[0032] Figure 7 It is a modified left view of the fourth embodiment.

[0033] Figure 8 It is a structural diagram of embodiment 5.

[0034] Fig. 9 It is a structural schematic diagram of the translation device.

[0035] Fig.10 This is a diagram of the traditional way of threading a rope.

[0036] Fig.11 It is a schematic diagram of rope threading in embodiment 1.

[0037] Fig.12 It is a schematic diagram of rope threading in embodiment three.

[0038] Fig.13 It is a schematic diagram of rope threading in embodiment 4.

[0039] Markings in the figure: 1-Crown crane, 2-Traveling car, 3-Drum, 4-Wire rope, 5-Power rotating device, 6-Suspension member, 7-First load-bearing connecting member, 8-Translation device, 81-Bearing platform, 82-Slide rail, 83-Hydraulic cylinder, 9-Crown crane coupling, 10-Second load-bearing connecting member, 11-Interface, 12-Dead rope fixer, 13-Crown crane layer, 14-Traveling car high position, 15-Traveling car low position. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0042] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0043] Embodiment 1 A multi-wire drilling rig travel hoist system, such as Figure 1 As shown, it includes a steel rope hoisting system, which is provided with two groups. Each group of the steel rope hoisting system includes a crown block 1, a traveling block 2, a drum 3 and a steel wire rope 4. The crown block 1 is used to be arranged above the wellhead, the traveling block 2 is located below the crown block 1, the drum 3 is arranged on one side of the crown block 1, and the drum 3 is connected with a power rotating device 5. The steel wire rope 4 is wound and one end is fixed on the drum 3, and the other end of the steel wire rope 4 passes through the crown block 1 and the traveling block 2 and is used to be fixed on the dead rope fixed end on the other side of the crown block 1; each group of the steel rope hoisting systems are linked to each other so as to be able to operate together.

[0044] The drums 3 of the wire rope hoisting system are arranged side by side on the same side of the overhead travelling crane 1, and the power rotating device 5 is a winch, and two drums 3 are connected to one winch. The two drums 3 are arranged in parallel, and the rotation axis of each drum 3 is parallel to each other and to the rotation axis of the overhead travelling crane 1.

[0045] It also includes a dead rope fixer 12, and at least two of the dead rope fixing ends are jointly arranged on one dead rope fixer 12.

[0046] In this embodiment, a faster operating speed can be supported, thereby improving the operating efficiency of the system, reducing damage caused by uneven tension, reducing imbalance caused by uneven load, helping to maintain the stability of the system, and maintaining efficient operation for a longer period of time. Each group of the traveling carriage 2 includes three movable pulleys, such as Fig.10 , 11 As shown, the wire rope 4 is unwound from the drum 3 and then fixed on the dead rope fixer 12. The middle part reciprocates through the crown block layer 13 and the traveling block layer, and rises and falls in the traveling block high position 14 and the traveling block low position 15. When the winch power and the rotation speed of the drum 3 are the same, the drilling tool lifting speed of this embodiment is twice that of the traditional method, and the load-bearing capacity is 100% of the traditional method.

[0047] Embodiment 2 The difference from the first embodiment is that Figure 2 As shown, in this embodiment, the two rollers 3 are coaxially arranged, and the rotation axis of each roller 3 is parallel to each other and to the rotation axis of the overhead travelling crane 1. Each of the dead rope fixing ends is correspondingly arranged on a dead rope fixing device 12. The dead rope fixing devices 12 are arranged parallel to each other along the axial direction of the overhead travelling crane 1.

[0048] Embodiment 3 A multi-wire drilling rig travel hoist system, such as Figure 3-5 As shown, it includes a steel rope hoisting system, which is provided with two groups. Each group of the steel rope hoisting system includes a crown block 1, a traveling block 2, a drum 3 and a steel wire rope 4. The crown block 1 is used to be arranged above the wellhead, the traveling block 2 is located below the crown block 1, the drum 3 is arranged on one side of the crown block 1, and the drum 3 is connected with a power rotating device 5. The steel wire rope 4 is wound and one end is fixed on the drum 3, and the other end of the steel wire rope 4 passes through the crown block 1 and the traveling block 2 and is used to be fixed on the dead rope fixed end on the other side of the crown block 1; each group of the steel rope hoisting systems are linked to each other so as to be able to operate together.

[0049] The drums 3 of the wire rope hoisting system are arranged side by side on the same side of the overhead travelling crane 1; the power rotating device 5 is a winch, and two drums 3 are connected to one winch. The two drums 3 are coaxially arranged, and the rotation axis of each drum 3 is parallel to each other and to the rotation axis of the overhead travelling crane 1.

[0050] It also includes a suspension member 6 and a first load-bearing connection member 7; The suspension member 6 is arranged just above the wellhead and mounted on the derrick. Each set of the crown block 1 comprises at least one fixed pulley, which is detachably connected to the suspension member 6. The fixed pulleys of the two sets of crown blocks 1 are symmetrical about the center line of the wellhead. The traveling block 2 includes at least one movable pulley, the lower end of which is detachably connected to the first load-bearing connector 7, and the two groups of movable pulleys of the traveling block 2 are symmetrical about the center line of the wellhead.

[0051] Each group of the overhead travelling crane 1 comprises a plurality of fixed pulleys, each of which is individually arranged; Each group of the traveling carriages 2 includes a plurality of movable pulleys, and each movable pulley is individually arranged.

[0052] It also includes a dead rope fixer 12, and the two dead rope fixing ends are jointly arranged on one dead rope fixer 12.

[0053] In this embodiment, in addition to the above-mentioned embodiment, the number of pulleys can be quickly adjusted according to the needs of the drilling operation to achieve changes in speed and load capacity to adapt to different drilling depths and weights, so that the drilling rig can operate in the best working state. Figure 4 As shown in (a) and 5 (a), there are 6 movable pulleys and 12 ropes; Figure 4 As shown in (b) and 5 (b), there are 4 movable pulleys and 8 ropes; Figure 4 As shown in (c) and 5 (c), there are 2 movable pulleys and 4 ropes. The traveling carriage 2 is symmetrically divided, taking each group of 4 movable pulleys as an example, as shown in Fig.10 and 12 As shown, the wire rope 4 is unloaded from the drum 3 and then fixed on the dead rope fixer 12. The middle part reciprocates through the crown block layer 13 and the traveling block layer, and rises and falls in the traveling block high position 14 and the traveling block low position 15. Among them, when the traveling block 2 is not in use, it rises and converts to the crown block layer 13. When the winch power and the drum 3 speed are the same, the drilling tool lifting speed of this embodiment is 3 times that of the traditional method, and the load-bearing capacity is 67% of the traditional method. Embodiment 4 A multi-wire drilling rig travel hoist system includes a wire rope hoisting system, such as Figure 6-7 As shown, there are two groups of steel rope hoisting systems, each group of the steel rope hoisting system includes a crown block 1, a traveling block 2, a drum 3 and a steel wire rope 4, the crown block 1 is used to be arranged above the wellhead, the traveling block 2 is located below the crown block 1, the drum 3 is arranged on one side of the crown block 1, the drum 3 is connected to a power rotating device 5, the steel wire rope 4 is wound and one end is fixed on the drum 3, and the other end of the steel wire rope 4 passes through the crown block 1 and the traveling block 2 and is used to be fixed to the dead rope fixed end on the other side of the crown block 1; Each group of the steel rope lifting systems can operate independently, or each group of the steel rope lifting systems can be interconnected to operate together.

[0054] The drums 3 of the wire rope hoisting system are arranged side by side on the same side of the overhead travelling crane 1; the power rotating device 5 is a winch, and each drum 3 is connected to a winch. The two drums 3 are coaxially arranged, and the rotation axis of each drum 3 is parallel to each other and to the rotation axis of the overhead travelling crane 1.

[0055] It also includes a translation device 8, a coupling of the overhead travelling crane 1 and a second load-bearing connecting member 10; The crane 1 is connected to the derrick in a sliding manner in the horizontal direction, and two groups of the cranes 1 are detachably connected through the coupling of the crane 1. The translation device 8 is installed on the derrick and connected to each group of the cranes 1, and can push the cranes 1 to reciprocate in the horizontal direction, so that the center line of each group of the cranes 1 or the center lines of the two groups of the cranes 1 are aligned with the center line of the wellhead; Figure 7 As shown in (a), the overhead crane 1 moves to the left, and the left wire rope 4 participates in the main load lifting operation; Figure 7 As shown in (b), the overhead crane 1 is in the middle, and both sets of wire ropes 4 are involved in the main load lifting operation; Figure 7 As shown in (c), the overhead travelling block 1 moves rightward, and the right steel wire rope 4 participates in the main load lifting operation. The second load-bearing connecting member 10 is arranged below the traveling block 2, and the two groups of the traveling blocks 2 are detachably connected via the load-bearing connecting member.

[0056] The translation device 8 includes a bearing platform 81 , on which a slide rail 82 arranged in a horizontal direction is provided. The overhead travelling crane 1 is arranged on the slide rail 82 . A hydraulic cylinder 83 is further provided between the overhead travelling crane 1 and the bearing platform 81 , and the hydraulic cylinder 83 drives the overhead travelling crane 1 to move along the slide rail 82 .

[0057] A plurality of interfaces 11 are provided on the upper portion of the second load-bearing connecting member 10, and the traveling carriage 2 is detachably connected to the interface 11 via a pin shaft; when multiple groups of the traveling carriages 2 are connected to the second load-bearing connecting member 10, the interfaces 11 to which the traveling carriages 2 are connected are symmetrical along the center line of the second load-bearing connecting member 10; when a group of the traveling carriages 2 is connected to the second load-bearing connecting member 10, the interfaces 11 to which the traveling carriages 2 are connected are located on the center line of the second load-bearing connecting member 10.

[0058] Each set of the overhead travelling crane 1 comprises at least one fixed pulley, and each set of the fixed pulleys are connected as one body; Each group of the traveling carriages 2 includes at least one movable pulley, and each group of the movable pulleys is connected as a whole.

[0059] It also includes a dead rope fixer 12, and the two dead rope fixing ends are jointly arranged on one dead rope fixer 12.

[0060] In this embodiment, compared with the above embodiment, if a power device or wire rope 4 has a problem, the other devices can still continue to work, which improves the reliability of the system. It ensures that the system can continue to operate and reduces downtime. The traveling block 2 is asymmetrically split, and each group of the traveling block 2 includes 3 movable pulleys. When one wire rope is used and one wire rope is not used, the system has redundancy. Fig.10 and 13 As shown, the wire rope 4 is unwound from the drum 3 and then fixed on the dead rope fixer 12. The middle part reciprocates through the crown block layer 13 and the traveling block layer, and rises and falls in the traveling block high position 14 and the traveling block low position 15. When the winch power and the rotation speed of the drum 3 are the same, the drilling tool lifting speed of this embodiment is twice that of the traditional method, and the load-bearing capacity is 50% of the traditional method.

[0061] Embodiment 5 The difference from the fourth embodiment is that Figure 8 As shown, each of the dead rope fixing ends is correspondingly arranged on one of the dead rope fixing devices 12. The dead rope fixing devices 12 are arranged parallel to each other along the axial direction of the overhead travelling machine 1.

[0062] Implementation Six A method for threading a multi-steel rope type swimming system, comprising the following steps: 1. Install the left wire rope 4: The wire rope 4 is fixed from the left drum 3, passed through the pulleys of the left crown block 1 and the traveling block 2, and finally clamped; 2. Install the right side wire rope 4: The wire rope 4 is fixed from the right drum 3, passed through the pulleys of the right crown block 1 and the traveling block 2, and finally clamped; The steel wire ropes 4 on both sides are wound symmetrically along the center of the wellhead.

[0063] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A multi-wire drilling rig travel hanging system, characterized in that: It comprises a steel rope hoisting system, wherein the steel rope hoisting system is provided with at least two groups, each group of the steel rope hoisting system comprises a crown block (1), a traveling block (2), a drum (3) and a steel wire rope (4), the crown block (1) is used to be arranged above the wellhead, the traveling block (2) is located below the crown block (1), the drum (3) is arranged on one side of the crown block (1), the drum (3) is connected to a power rotating device (5), the steel wire rope (4) is wound and one end is fixed on the drum (3), and the other end of the steel wire rope (4) passes through the crown block (1) and the traveling block (2) and is used to be fixed to the dead rope fixing end on the other side of the crown block (1); Each group of the steel rope lifting systems can operate independently, or each group of the steel rope lifting systems can be interconnected to operate together.

2. The multi-wire drilling rig traveling and hanging system according to claim 1, characterized in that: The rollers (3) of the steel rope hoisting system are arranged side by side on the same side of the overhead travelling crane (1); The power rotating device (5) is a winch, and the two drums (3) are connected to one winch together, or each drum (3) is connected to one winch respectively.

3. The multi-wire drilling rig traveling and hanging system according to claim 1, characterized in that: The two rollers (3) are arranged in parallel, and the rotation axis of each roller (3) is parallel to each other and to the rotation axis of the overhead traveling vehicle (1); Alternatively, the two rollers (3) are coaxially arranged, and the rotation axis of each roller (3) is parallel to each other and to the rotation axis of the overhead traveling vehicle (1).

4. The multi-rope drilling rig traveling hoist system according to any one of claims 1 to 3, characterized in that: It also includes a suspension member (6) and a first load-bearing connection member (7); The suspension member (6) is arranged just above the wellhead and mounted on the derrick, each set of the overhead travelling carriage (1) comprises at least one fixed pulley, the fixed pulley being detachably connected to the suspension member (6), and the fixed pulleys of the two sets of overhead travelling carriages (1) are symmetrical about the center line of the wellhead; The traveling carriage (2) comprises at least one movable pulley, the lower end of the movable pulley being detachably connected to the first load-bearing connecting member (7), and the two groups of movable pulleys of the traveling carriage (2) are symmetrical about the center line of the wellhead.

5. The multi-wire drilling rig traveling hoist system according to any one of claims 1 to 3, characterized in that: It also includes a translation device (8), a crane coupling (9) and a second load-bearing connection member (10); The crane (1) is slidably connected to the derrick in the horizontal direction, and the two sets of cranes (1) are detachably connected via the crane (1) couplings. The translation device (8) is installed on the derrick and connected to each set of cranes (1), and is capable of pushing the crane (1) to reciprocate in the horizontal direction, so that the center line of each set of cranes (1) or the center lines of the two sets of cranes (1) are aligned with the center line of the wellhead; The second load-bearing connection member (10) is arranged below the traveling carriage (2), and the two groups of traveling carriages (2) are detachably connected via the load-bearing connection member.

6. The multi-wire drilling rig traveling and hanging system according to claim 5, characterized in that: The translation device (8) comprises a bearing platform (81) arranged on a derrick, the bearing platform (81) being provided with a slide rail (82) arranged in a horizontal direction, the overhead travelling vehicle (1) being arranged on the slide rail (82), and a hydraulic cylinder (83) being provided between the overhead travelling vehicle (1) and the bearing platform (81), the hydraulic cylinder (83) driving the overhead travelling vehicle (1) to move along the slide rail (82).

7. The multi-wire drilling rig traveling and hanging system according to claim 5, characterized in that: The second load-bearing connection member (10) comprises a plurality of interfaces (11), and the traveling carriage (2) is detachably connected to the interfaces (11) via pins.

8. The multi-wire drilling rig traveling hoist system according to any one of claims 1 to 3, characterized in that: Each group of the overhead travelling vehicles (1) comprises at least one fixed pulley, and all the fixed pulleys are connected as a whole; or, each group of the fixed pulleys are connected as a whole; or, each fixed pulley is provided separately; Each group of the traveling carriages (2) comprises at least one movable pulley, and all the movable pulleys are connected as a whole; or, each group of the movable pulleys are connected as a whole; or, each movable pulley is provided separately.

9. The multi-wire drilling rig traveling and hanging system according to claim 1, characterized in that: It also includes a dead rope fixer (12), at least two of the dead rope fixing ends are jointly arranged on one dead rope fixer (12), or each of the dead rope fixing ends is correspondingly arranged on one of the dead rope fixers (12).

10. The multi-wire drilling rig traveling and hanging system according to claim 9, characterized in that: When there are at least two dead-rope fixers (12), the dead-rope fixers (12) are arranged in parallel along the axial direction of the overhead travelling vehicle (1).

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