An automatic drill pipe management system

Abstract

This invention belongs to the technical field of oilfield exploration drilling equipment, and relates to an automatic drill pipe management system. The system is installed next to the power catwalk, and its main structure includes a transport trolley and a liftable drill pipe box, which work together. The transport trolley is located between the power catwalk and the liftable drill pipe box, and includes a base plate, first lifting cylinders, and a platform. The bottom of the base plate is equipped with wheels. Two first lifting cylinders are installed between the base plate and the platform. Baffles are installed at both ends of the platform to prevent drill pipe from slipping; the baffles are liftable. The system also includes an alignment device, which includes a propulsion device and a limiting device. The ground-mounted transport trolley design increases the safety during drill pipe transportation and greatly improves the quantity of drill pipe supplied and collected in a single operation. The system is ingeniously designed, safe, reliable, and has high loading efficiency, with broad market prospects.

Description

Technical fields:

[0001] This invention belongs to the technical field of oilfield exploration drilling equipment, and relates to an automatic drill pipe management system that can simultaneously provide and collect multiple drill pipes for the power catwalk, thereby improving loading efficiency. Background technology:

[0002] In oilfield drilling, a large number of drill pipes are required. Traditional manual hoisting is dangerous and inefficient. Currently available mobile automatic drill pipe boxes with robotic arms eliminate the need for manual hoisting. For example, Chinese patent CN201420185160.3 discloses a gripper capable of simultaneously grabbing multiple drill pipes. This gripper includes a support frame and two symmetrically arranged movable gripper devices on the support frame. Two sets of auxiliary clamping and balancing devices are also provided on the support frame outside the two movable gripper devices. Each auxiliary clamping and balancing device includes an auxiliary clamping hydraulic cylinder and a linkage mechanism. The cylinder body of the auxiliary clamping hydraulic cylinder is hinged to the support frame, and the piston rod is hinged to the linkage mechanism, driving the output end of the linkage mechanism to move vertically up and down. This invention, because the movable grippers can adjust their opening degree, can simultaneously grab one or more drill pipes of different diameters. Furthermore, the auxiliary clamping and balancing devices prevent drill pipe tilting, and mechanical limit pins at both ends of the support frame provide protection when gripping drill pipes of different diameters. However, the existing overhead crane design still poses a safety hazard of falling, and its gripping speed for single or at most three drill pipes remains inefficient. Therefore, it is necessary to develop a drill pipe management system with high loading efficiency capable of simultaneously gripping multiple drill pipes. Summary of the Invention:

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic drill pipe management system that can simultaneously load and unload multiple drill pipes, freeing it from the constraints of traditional traveling manipulator drill pipe boxes and greatly improving the efficiency of drill pipe supply and collection.

[0004] To achieve the above objectives, the present invention provides an automatic drill pipe management system. This system is placed next to the power catwalk and its main structure includes a transport trolley and a liftable drill pipe box, which are used in conjunction. The transport trolley is located between the power catwalk and the liftable drill pipe box. The transport trolley includes a base plate, a first lifting cylinder, and a platform. The bottom of the base plate is equipped with wheels. Two first lifting cylinders are arranged between the base plate and the platform. Baffles are provided at both ends of the platform to prevent the drill pipe from slipping. The baffles are liftable.

[0005] The invention describes a track on the ground between the power catwalk and the liftable drill rod box, on which a transport trolley travels.

[0006] The wheels of the transport vehicle described in this invention are powered by a walking motor.

[0007] The two first lifting cylinders of the present invention are arranged at intervals along the traveling direction of the transport trolley.

[0008] The two first lifting cylinders of the present invention can be controlled independently; the first lifting cylinders are fixedly connected to the base plate; the first lifting cylinder on the left is connected to the platform through a lug and a linear guide rail, and the first lifting cylinder on the right is connected to the platform through a lug.

[0009] The liftable drill rod box of the present invention includes an outer frame with guide rails on both sides inside, a second lifting cylinder, a liftable drill rod collecting platform with guide wheels on both sides, and a pushing device controlled by the cylinder that can push out the entire row of drill rods; the liftable drill rod collecting platform rises or falls along the guide rails on both sides inside the outer frame under the drive of the second lifting cylinder; the pushing device is fixed at one end of the top of the outer frame.

[0010] The present invention provides a liftable drill rod collection platform comprising a lifting frame and a drill rod tray. The drill rod tray has multiple layers, and each layer of the drill rod tray is welded to the lifting frame at an angle of 2°.

[0011] The system of the present invention also includes an alignment device, which includes a propulsion device and a limiting device. The propulsion device and the limiting device are located on both sides of the traveling direction of the transport vehicle, and the propulsion device is a telescopic structure with a guide rail.

[0012] The inventive concept of this invention: Due to structural limitations, current robotic drill rod boxes cannot grasp too many drill rods. Therefore, this invention adopts an integrated ground-fixed transport trolley design, which is more stable and has a stronger carrying capacity. Each trolley is equipped with an independently controlled dual-cylinder design, which enables it to carry more than ten drill rods at a time and can achieve any tilting transport angle.

[0013] Compared with the prior art, the beneficial effects of this invention are: the floor-mounted transport trolley design increases the safety of drill pipe transportation; the transport trolley, used in conjunction with the liftable drill pipe box, greatly increases the number of drill pipes supplied and collected at one time; both the transport trolley and the liftable drill pipe box can be raised, lowered, and tilted, making the loading and collection of drill pipes highly automated and efficient. The system is ingeniously designed, safe and reliable, has high loading efficiency, and has broad market prospects. Attached image description:

[0014] Figure 1 This is a schematic diagram of the overall structure and principle of the automatic drill pipe management system involved in this invention.

[0015] Figure 2 This is a side view schematic diagram of the automatic drill pipe management system involved in this invention.

[0016] Figure 3 This is a schematic diagram of the motion mode of the automatic drill pipe management system involved in this invention.

[0017] Figure 4 This is a schematic diagram illustrating the structural principle of the drill rod tray of the drill rod box and drill rod collection platform of the present invention, which is tilted at 2°.

[0018] Figure 5 This is a schematic diagram of the structural principle of the transport vehicle involved in this invention.

[0019] Figure 6 This is a schematic diagram of the structural principle of the drill pipe ejection device involved in this invention. Detailed implementation method:

[0020] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings;

[0021] Example 1:

[0022] This embodiment relates to an automatic drill pipe management system. This system is installed next to a power catwalk and used in conjunction with it to provide or collect drill pipes. Its main structure includes a transport trolley 1 and an alignment device 3, used in conjunction with a liftable drill pipe box 2. The transport trolley 1 is located between the power catwalk and the liftable drill pipe box. The transport trolley 1 includes a base plate 7, first lifting cylinders 8, and a platform 4. The bottom of the base plate 7 is equipped with wheels 71. Two first lifting cylinders 8 are arranged between the base plate 7 and the platform 4, spaced apart along the travel direction of the transport trolley 1. The upper and lower ends of the first lifting cylinders 8 are connected to the base plate 7 and the platform 4, respectively. Baffles 6 are provided at both ends of the platform 4 to prevent drill pipes from slipping. The baffles 6 are liftable and controlled by cylinders 5. The alignment device 3 is fixed to the ground and includes a propulsion device 17 and a limiting device 18, located on both sides of the transport trolley 1's travel track. The propulsion device 17 is a telescopic structure with guide rails.

[0023] The wheels 71 of the transport trolley 1 are powered by the walking motor 9.

[0024] The hydraulic cylinder 5 is a telescopic hydraulic cylinder, with its two ends fixedly connected to the platform 4 and the baffle 6, respectively.

[0025] The two first lifting cylinders 8 can be controlled independently; the first lifting cylinders 8 are fixedly connected to the base plate 7; the left first lifting cylinder 8 is connected to the platform 4 via an ear seat and a linear guide rail 19, and the right first lifting cylinder 8 is connected to the platform 4 via an ear seat; the first lifting cylinder 8 and the ear seat are rotatable; the platform 4 can be tilted by the cooperation of the first cylinders 8 and the linear guide rail 19. The line connecting the propulsion device 17 and the limiting device 18 is perpendicular to the travel track; the limiting device 18 is a vertical flat plate structure.

[0026] The liftable drill rod box 2 includes an outer frame 11 with guide rails on both sides inside, a second lifting cylinder 13, a liftable drill rod collecting platform 12 with guide wheels on both sides, and a cylinder-controlled ejection device 14 that can push out the entire row of drill rods. The liftable drill rod collecting platform 13 rises or falls along the guide rails on both sides inside the outer frame 11 under the drive of the second lifting cylinder 13. The ejection device 14 is fixed to one end of the top of the outer frame 11. The ejection device 14 includes an L-shaped ejection arm 15. The head of the L-shaped ejection arm 15 is provided with a guide wheel 16, which can reduce the friction on the drill rod during the ejection process. The L-shaped ejection arm 15 is controlled by a telescopic cylinder.

[0027] The liftable drill rod collection platform 12 includes a lifting frame 121 and a drill rod tray 122. The drill rod tray 122 has multiple layers, and each layer of drill rod tray is welded to the lifting frame at an angle of 2°.

[0028] The ejection device 14 is located on top of the outer frame 11 on the shorter side of the drill pipe tray 22.

[0029] A track 10 is provided on the ground between the power cat walkway and the liftable drill rod box 2, and the transport trolley 1 travels on the track 10.

[0030] The transport trolley 1 described in this embodiment can achieve the lifting and tilting of the trolley transport platform through two independently controlled lifting cylinders 8. The transport trolley 1 includes two liftable stops 6 controlled by cylinders 5 to prevent the drill rod from slipping.

[0031] The working principle of the automatic drill pipe management system described in this embodiment is as follows:

[0032] (1) When conveying drill pipe:

[0033] The transport trolley 1 moves to one side of the drill rod box 2. By controlling the first lifting cylinder 8 on the side closest to the drill rod box 2, the platform 4 of the transport trolley 1 near the drill rod box 2 is lowered to be level with the discharge port of the drill rod box. Meanwhile, the first lifting cylinder 8 on the other side is controlled to lower the end of the transport trolley 1 away from the drill rod box 2 to below the discharge plane of the drill rod box. The transport trolley 1 is tilted, and the stop block 6 on the lower side is raised. Then the drill rod box 2... The inverted lifting cylinder 13 rises, causing the liftable drill rod collection platform 12 to rise to a certain height, so that the top drill rod and the drill rod ejection device 14 are on the same plane. The cylinder of the drill rod ejection device 14 extends, causing the L-shaped ejection arm 15 with guide wheels 16 to eject the drill rod. The drill rod rolls into the transport trolley 1. Then, the stop block 6 is raised at the end of the transport trolley 1 near the drill rod box. The transport trolley 1 is raised to its highest point and transports the drill rod to the pipe support above the power catwalk along the track 10. Finally, the transport trolley 2 descends to the lowest point and retracts the stop block 6 and leaves the pipe support along the track 10. At this time, because the height of the transport trolley is lower than that of the pipe support, the drill rod remains on the pipe support.

[0034] (2) When collecting drill pipe:

[0035] When the pipe support of the power catwalk has enough drill rods to fill one layer of drill rod box 2, the transport trolley 1 lowers to its lowest height, retracts the stop block 6, moves to below the pipe support, and then raises the stop block 6. Then the transport trolley 1 is raised as a whole, raising the drill rods to their maximum stroke. As the height of the transport trolley gradually exceeds that of the pipe support during this process, it can lift the drill rods on the pipe support. Driven by the travel motor 9, the transport trolley 1 moves towards the drill rod box 2, removing the drill rods from the pipe support. Simultaneously, the liftable drill rod collection platform 12 of the drill rod box 2 rises, making the loading plane higher than the outer frame 11 of the drill rod box 2; when the transport trolley 1 moves to the positioning device 3, the entire transport trolley descends to the same level as the drill rod box; the propulsion device 17 of the positioning device 3 extends to push the uneven drill rods toward the limiting device 18 until one end of all the drill rods is against the limiting device 18, the drill rods complete the alignment step, and the propulsion device 17 returns to its original position; then the stop 6 on the side of the transport trolley 1 closest to the drill rod box 2 falls down, and the first lifting cylinder 8 of the transport trolley on the side away from the drill rod box 2 rises to tilt the transport trolley 1, which, combined with the 2° tilt design of the drill rod box 2 structure, causes the drill rods to roll into the drill rod box; finally, the drill rod box falls down to complete the drill rod collection.

[0036] Using the automatic drill pipe management system described in this embodiment, 10 drill pipes can be retrieved and loaded at once, greatly improving loading efficiency.

Claims

1. An automatic drill pipe management system, characterized in that, The system is placed next to the powered catwalk and its main structure includes a transport trolley and a liftable drill pipe box, which work together. The transport trolley is located between the powered catwalk and the liftable drill pipe box. The transport trolley includes a base plate, first lifting cylinders, and a platform. The bottom of the base plate is equipped with wheels. Two first lifting cylinders are installed between the base plate and the platform. Baffles are installed at both ends of the platform to prevent the drill pipe from slipping. The baffles are adjustable. The two first lifting cylinders are spaced apart along the travel direction of the transport trolley. The two first lifting cylinders can be controlled independently. The first lifting cylinders are fixedly connected to the base plate. The first lifting cylinder on the left is connected to the platform via a lug and a linear guide rail, and the first lifting cylinder on the right is connected to the platform via a lug. The platform can be tilted by adjusting the first lifting cylinders and the linear guide rail. The liftable drill pipe box includes an outer frame with guide rails on both sides, a second lifting cylinder, a liftable drill pipe collecting platform with guide wheels on both sides, and a cylinder-controlled ejection device that can push out the entire row of drill pipes. The liftable drill pipe collecting platform rises or falls along the guide rails on both sides of the inner side of the outer frame under the drive of the second lifting cylinder. The ejection device is fixed to one end of the top of the outer frame. The ejection device includes an L-shaped ejection arm, the head of which is equipped with a guide wheel to reduce friction on the drill pipe during ejection. The L-shaped ejection arm is controlled by a telescopic cylinder. The liftable drill pipe collecting platform includes a lifting frame and a drill pipe tray. The drill pipe tray has multiple layers, and each layer of drill pipe tray is welded to the lifting frame at an angle of 2°.

2. The automatic drill pipe management system according to claim 1, characterized in that, A track is provided on the ground between the power catwalk and the liftable drill pipe box, and the transport trolley travels on the track.

3. The automatic drill pipe management system according to claim 1, characterized in that, The wheels of the transport trolley are powered by a walking motor.

4. The automatic drill pipe management system according to any one of claims 1-3, characterized in that, The system also includes an alignment device, which comprises a propulsion device and a limiting device. The propulsion device and the limiting device are located on opposite sides of the trolley's travel direction. The propulsion device is a telescopic structure with a guide rail. The line connecting the propulsion device and the limiting device is perpendicular to the travel track. The limiting device is a vertical flat plate structure. The working principle of the automatic drill pipe management system is as follows: (1) When conveying drill pipe: The transport trolley moves to one side of the drill rod box. By controlling the first lifting cylinder on the side closest to the drill rod box, the platform of the transport trolley near the drill rod box is lowered to be level with the discharge port of the drill rod box. The first lifting cylinder on the other side is controlled to lower the end of the transport trolley away from the drill rod box to be lower than the discharge plane of the drill rod box. The transport trolley is tilted, and the stop block on the lower side is raised. Then, the inverted lifting cylinder inside the drill rod box is raised, which drives the liftable drill rod collection platform to rise to a certain height, so that the top drill rod and the drill rod ejection device are on the same plane. The cylinder of the drill rod ejection device extends, and the L-shaped ejection arm with guide wheels ejects the drill rod. The drill rod rolls into the transport trolley. Then, the block is raised at one end of the transport trolley near the drill pipe box, the transport trolley is raised to its highest point and the drill pipe is transported along the track to the pipe support above the power catwalk; finally, the transport trolley is lowered to the lowest point and the block is retracted and it leaves the pipe support along the track. At this time, because the height of the transport trolley is lower than that of the pipe support, the drill pipe remains on the pipe support. (2) When collecting drill pipe: When the pipe support of the power catwalk has enough drill rods to fill one layer of the drill rod box, the transport trolley lowers to its lowest height, retracts the stop block, moves under the pipe support, and then raises the stop block. The transport trolley then rises as a whole, lifting the drill rods to their maximum stroke. As the height of the transport trolley gradually exceeds that of the pipe support, it can lift the drill rods from the pipe support. Driven by the travel motor, the transport trolley moves towards the drill rod box, removing the drill rods from the pipe support. Simultaneously, the liftable drill rod collection platform of the drill rod box rises, making the loading plane higher than the outer frame of the drill rod box. After the transport trolley moves to the alignment device, the entire transport trolley lowers to the same level as the drill rod box. The alignment device's propulsion mechanism extends to push the uneven drill rods toward the limiting device until one end of all drill rods is against the limiting device, completing the alignment process. The propulsion mechanism then returns to its original position. Next, the stop block on the side of the transport trolley closest to the drill rod box falls, and the first lifting cylinder on the side of the transport trolley furthest from the drill rod box rises, tilting the transport trolley. Combined with the 2° tilt design of the drill rod box structure, this causes the drill rods to roll into the drill rod box. Finally, the drill rod box falls, completing the drill rod collection.

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