A catwalk mechanism and an automatic drill tool loading system having the same

Abstract

The present application provides a catwalk mechanism and an automatic drill string handling system having the same, including a base, a catwalk main body, a lifting device, a conveying device, a clamping and transferring device, and a pushing mechanism. The drill string set is conveyed onto the catwalk main body through the conveying device. The catwalk main body includes a chassis and a sliding plate. The end of the chassis is rotatably arranged on the base, and the sliding plate is slidably arranged on the chassis. Among them, the sliding plate is used to receive and push the drill string set conveyed from the conveying device, and the pushing mechanism ejects the drill pipe in the casing. The clamping and transferring device is used to clamp and deliver the drill pipe and / or casing on the sliding plate along the extending direction of the sliding plate, and can operate on the drill pipe and casing of the drill string set respectively. Further, by designing an automatic drill string handling system, the docking and cooperation with the power head through the clamping and transferring device reduces the steps of manual operation docking, can effectively improve the efficiency and safety of drilling construction, and saves a large amount of input costs.

Description

Technical Field

[0001] The present invention relates to the technical field of catwalks, and particularly to a catwalk mechanism and an automatic drill string system having the same. Background Art

[0002] During the process of engineering drilling, a large number of drill strings such as casing pipes and drill pipes are required. In order to realize the round-trip transportation of the drill string between the ground and the drill floor, the traditional drill string transportation method usually completes the process of the drill string going up and down the drill floor through a pneumatic winch for lifting, manual pushing and pulling, and a catwalk mechanism. Even when transporting large-sized casing pipes, a crane is needed to assist in the operation. At the same time, it is necessary to manually align the drill string with the main machine on the drill floor, and the process is complicated. In the traditional transportation scheme, in the face of the task of transporting a large number of casing pipes and drill pipes, the existing catwalk mechanisms are often set for the drill pipes in the drill string and cannot take into account the reasonable transportation of various drill strings. This work not only has a large number of procedures, but also has a high risk factor, which may pose a threat to the personal safety of the staff. Summary of the Invention

[0003] In view of this, the present application proposes a catwalk mechanism and an automatic drill string system having the same. The specific solutions are as follows:

[0004] In a first aspect, a catwalk mechanism is proposed, including: a base, a catwalk main body, a lifting device, a conveying device, a clamping and transferring device, and a pushing mechanism.

[0005] The conveying device is rotatably arranged on the base and is used to convey the drill string group onto the catwalk main body; the drill string group includes a casing pipe and a drill pipe arranged inside the casing pipe;

[0006] The catwalk main body includes a chassis and a sliding plate. The end of the chassis is rotatably arranged on the base, and the sliding plate is slidably arranged on the chassis. The sliding plate is used to receive and push the drill string group conveyed from the conveying device;

[0007] The pushing mechanism is arranged on the sliding plate and is used to dock the drill string group to eject the drill pipe in the casing pipe; one end of the lifting device is connected to the chassis, and the other end is connected to the base, and is used to lift the free end of the chassis from a preset flat state to a preset lifted state;

[0008] The clamping and transferring device is arranged at the free end of the chassis and corresponds to the sliding plate, and is used to clamp and deliver the drill pipe and / or the casing pipe on the sliding plate along the extending direction of the sliding plate. In practical applications, the clamping and transferring device includes a vise structure, which can effectively clamp the drill pipe or the casing pipe of the drill string group pushed by the pushing mechanism and the sliding plate to deliver the drill pipe or the casing pipe of the drill string group to the power head.

[0009] In some specific embodiments, it further includes a pipe rack for placing the drill string assembly. The pipe rack is arranged on one side edge of the base close to the conveying device; the conveying device is used to abut against the pipe rack to obtain the drill string assembly when it is flipped to the first preset position, and flip to the second preset position when the chassis is in the preset flat state to convey the drill string assembly onto the sliding plate of the catwalk main body.

[0010] In some specific embodiments, the pushing mechanism includes a movable lifting part. The lifting part is used to move along the extending direction of the chassis to lift the drill pipe in the casing, so that the drill pipe is exposed from the casing.

[0011] One end of the lifting part close to the free end of the chassis is provided with a lifting platform. The outer diameter of the lifting platform is not greater than the inner diameter of the casing and not less than the outer diameter of the drill pipe; or one end of the lifting part close to the drill string assembly is provided with a lifting groove. The outer diameter of the lifting groove is not greater than the inner diameter of the casing, and the inner diameter of the lifting groove is not less than the outer diameter of the drill pipe.

[0012] In some specific embodiments, the conveying device includes a fixed part, a movable part and a limiting rod. The fixed part is arranged on the base, and the movable part is rotatably arranged on the fixed part.

[0013] One end of the limiting rod is movably connected to the fixed part, and the other end of the limiting rod is provided with a sliding limiting groove. A first end point is arranged near the connection between the sliding limiting groove and the fixed part, and a second end point is arranged far from the connection between the sliding limiting groove and the fixed part.

[0014] A slider is protrudingly arranged on the movable part. The slider is slidably arranged in the sliding limiting groove. The movable part is used to flip to the first preset position when the slider is located at the first end point and flip to the second preset position when the slider is located at the second end point.

[0015] In some specific embodiments, a bent part extends on the free end of the movable part. The bent part forms a first preset angle with the movable part, and the first preset angle is between 100° and 150°; the bent part is used to abut against the pipe rack when the movable part flips to the first preset position to receive the drill string assembly on the pipe rack; one side of the fixed part abuts against the chassis in the preset flat state, and the other side of the fixed part is rotatably connected with the movable part. The movable part is used to drive the drill string assembly to slide when it flips to the second preset position and abut against the chassis through the fixed part to make the drill string assembly enter the sliding plate.

[0016] In practical applications, the transition between the bent part and the movable part can be set as an arc structure, so that when the bent part abuts against the pipe rack and obtains the drill string assembly, the drill string assembly can contact the movable part through the arc structure during the process of rolling along the bent part to the abutting position between the movable part and the chassis, reducing the friction between the drill string assembly and the movable part during the rolling process and preventing the drill string assembly from being worn.

[0017] In some specific embodiments, one or more sets of support mechanisms are provided on both sides of the base;

[0018] The support mechanism includes a transverse connecting member and a hydraulic leg; one end of the transverse connecting member is rotatably connected to the side edge of the base, and the other end is connected to the hydraulic leg;

[0019] The hydraulic leg is used for telescoping to drive the overall lifting or lowering of the base.

[0020] In some specific embodiments, the sliding plate has a receiving groove, and the receiving groove extends along the length direction of the sliding plate for receiving a drill string assembly; the groove wall of the receiving groove may present a V-shaped structure to provide support for the drill string assembly, and the groove wall of the receiving groove forms a second preset angle with the plane where the chassis is located for limiting the drill string assembly.

[0021] In some specific embodiments, an adjustment mechanism is further included, and the adjustment mechanism is rotatably arranged on the groove wall of the receiving groove and is used for swinging relative to the groove wall of the receiving groove to push the drill string assembly in the receiving groove out of the sliding plate.

[0022] In some specific embodiments, a limiting block is further provided on the chassis on the side of the receiving groove away from the drill string assembly, and the side wall of the limiting block facing the receiving groove forms a third preset angle with the plane where the chassis is located; the angle of the third preset angle is greater than the second preset angle.

[0023] In practical applications, during the overall operation of the catwalk mechanism, due to inertia, when the conveying device conveys the drill string assembly to the receiving groove on the chassis, if the depth of the receiving groove is insufficient and the moving speed of the drill string assembly is too fast, the drill string assembly may move to an area beyond the receiving groove. At this time, the limiting block can be set to limit and block the drill string assembly.

[0024] Furthermore, by making the angle of the third preset angle formed by the side groove wall of the limiting block facing the receiving groove and the plane where the chassis is located greater than the second preset angle, the side groove wall of the sliding plate can be extended to a certain extent, providing a supporting force for the drill string assembly and resistance to its movement, so as to stably limit the drill string assembly in the receiving groove and prevent the drill string assembly from rolling out from the other side groove wall of the receiving groove.

[0025] In a second aspect, an automatic drill string system is proposed, which includes any one of the catwalk mechanisms in the foregoing technical solutions, and further includes a drill tower and a power head, and the power head is movably arranged on the drill tower;

[0026] The clamping and transferring device is used to sequentially clamp the drill pipes and casing pipes on the sliding plate and deliver the drill pipes and casing pipes in sequence along the extending direction of the sliding plate;

[0027] The power head is used to move to the area close to the clamping and transferring device and tilt after the clamping and transferring device delivers the drill pipe, so as to dock the drill pipe and the casing in sequence.

[0028] In some specific embodiments, it further includes a first monitoring device, a second monitoring device and a control device; the clamping and transferring device, the sliding plate and the pushing mechanism are respectively connected with driving devices;

[0029] The first monitoring device is arranged on the sliding plate and is used to detect whether there is a drill string group on the sliding plate.

[0030] The control device is electrically connected to the first monitoring device, the second monitoring device, the pushing mechanism, the conveying device and the driving device respectively, and is used to control the driving device to drive the pushing mechanism to move when there is a drill string group on the sliding plate, and control the driving device to drive the conveying device to obtain the drill string group when there is no drill string group on the sliding plate;

[0031] The second monitoring device is arranged on the clamping and transferring device and is used to detect whether there is a drill pipe or a casing in the clamping and transferring device, and whether the drill pipe or the casing has moved to a preset docking area. The control device is also electrically connected to the power head and is used to control the power head to dock with the casing or the drill pipe of the drill string group when the drill pipe or the casing moves to the preset docking area.

[0032] In practical applications, the clamping and transferring device includes a vise structure and an oil cylinder structure, and the vise structure is respectively connected to the oil cylinder mechanism, the driving device and the control device. The vise structure can clamp the drill pipe or the casing of the drill string group pushed by the pushing mechanism and the sliding plate. The second monitoring device is used to detect whether there is a drill pipe or a casing in the vise structure and further detect whether the clamping of the drill pipe or the casing is completed. In a specific application process, the receiving groove in the sliding plate receives the drill string group and drives the drill string group to move along the length direction of the sliding plate. The pushing mechanism on the sliding plate further enters the casing in the drill string group and ejects the drill pipe in the drill string group from the casing. When the front end of the drill pipe enters the corresponding position of the vise structure, the vise structure clamps the drill pipe under the drive of the driving device. At this time, the oil cylinder mechanism pushes the vise structure to clamp the drill pipe and deliver it forward along the length direction of the sliding plate. After moving a preset distance, the vise structure returns to its original position and clamps the next section of the drill pipe again, repeating the above process of delivering the drill pipe to realize the process of clamping, delivering the drill pipe and docking with the power head. After the drill pipe is docked, the casing is docked.

[0033] In practical applications, the preset docking area can refer to the position corresponding to the specific length that the casing head in the drill string group needs to extend relative to the clamping and transferring device, or the position corresponding to the length that the drill pipe in the drill string group needs to further extend relative to the casing. The second monitoring device can detect whether there is a casing or a drill pipe of the corresponding drill string group in this preset docking area by means of sensor detection, etc.

[0034] In a specific embodiment, the user can adjust the moving distance of the pushing mechanism on the chassis and / or the moving distance of the sliding plate according to actual requirements, the position data of the preset docking area, the relative positions and distance data between the catwalk mechanism, the derrick, and the power head, etc.

[0035] Beneficial effects: The present application proposes a catwalk mechanism and an automatic drill string loading system with the same. By setting a base, a catwalk main body, a lifting device, a conveying device, and a pipe rack, and enabling cooperation among various components, it is possible to achieve automatic conveyance of the drill string group, separate docking of the drill pipes and casing pipes in the drill string group with the power head, and position conveyance. Further, through the automatic drill string loading system, the overall process of loading the drill string is made intelligent and automated. Compared with the traditional working method, it can process the drill pipes and casing pipes in the drill string group sequentially in a targeted manner, reducing the amount of manual input in the project, reducing manual operation steps, and effectively improving the efficiency and safety of drilling construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 It is a general three-dimensional structure schematic diagram of the present application;

[0038] Figure 2 It is a general side view structure schematic diagram of the present application;

[0039] Figure 3 It is a general top view structure schematic diagram of the present application;

[0040] Figure 4 It is a three-dimensional structure schematic diagram of the chassis of the present application;

[0041] Figure 5 It is a three-dimensional structure schematic diagram of the sliding plate of the present application;

[0042] Figure 6 It is a three-dimensional structure schematic diagram of the conveying device of the present application;

[0043] Figure 7 It is a cross-sectional schematic diagram of the sliding plate of the present application in a preset first direction;

[0044] Figure 8 It is a general structure schematic diagram of the drill string loading system of the present application;

[0045] Figure 9This is a schematic diagram of the connection relationships of the various modules in the upper drill tool system of this application.

[0046] Reference numerals: 1 - base; 2 - catwalk main body; 21 - underframe; 211 - free end; 22 - pushing mechanism; 221 - lifting part; 23 - sliding plate; 231 - receiving groove; 232 - groove wall; 233 - limiting block; 234 - adjusting mechanism; 3 - lifting device; 31 - lifting rod group; 32 - auxiliary rod group; 331 - first connection point; 332 - second connection point; 333 - third connection point; 4 - conveying device; 41 - fixed part; 42 - movable part; 421 - slider; 422 - bent part; 43 - limiting rod; 431 - sliding limiting groove; 432 - first end point; 433 - second end point; 5 - pipe rack; 6 - clamping and transferring device; 61 - vise structure; 62 - oil cylinder structure; 7 - support mechanism; 81 - first monitoring device; 82 - second monitoring device; 83 - driving device; 9 - drill tool set; 91 - casing; 92 - drill pipe; 93 - drill tower; 931 - power head; 10 - control device; A - first preset direction. Detailed implementation manners

[0047] In the following, various embodiments disclosed in this application will be described more comprehensively. This application may have various embodiments, and adjustments and changes can be made therein. However, it should be understood that there is no intention to limit the various embodiments of this application to the specific embodiments disclosed herein, but this application should be understood to cover all adjustments, equivalents, and / or alternative solutions that fall within the spirit and scope of the various embodiments of this application.

[0048] The terms used in the various embodiments disclosed in this application are only for the purpose of describing specific embodiments and are not intended to limit the various embodiments of this application. As used herein, the singular form is also intended to include the plural form unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the various embodiments of this application belong. Terms (such as those defined in a commonly used dictionary) will be interpreted as having the same meaning as their contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning unless clearly defined in the various embodiments of this application.

[0049] Embodiment 1

[0050] Embodiment 1 of this application discloses a catwalk mechanism, and the specific solution is as follows:

[0051] A catwalk mechanism includes: a base 1, a catwalk main body 2, a lifting device 3, a conveying device 4, a clamping and transferring device 6, and a pushing mechanism 22.

[0052] The conveying device 4 is rotatably arranged on the base 1 and is used for conveying the drill string assembly 9 onto the catwalk main body 2; the drill string assembly 9 includes a casing 91 and a drill pipe 92 arranged inside the casing 91;

[0053] The catwalk main body 2 includes a chassis 21 and a sliding plate 23. The end of the chassis 21 is rotatably arranged on the base 1, and the sliding plate 23 is slidably arranged on the chassis 21. The sliding plate 23 is used for receiving and pushing the drill string assembly 9 conveyed from the conveying device 4;

[0054] The pushing mechanism 22 is arranged on the sliding plate 23 and is used for docking with the drill string assembly 9 to eject the drill pipe 92 in the casing 91; one end of the lifting device 3 is connected to the chassis 21 and the other end is connected to the base 1, and is used for lifting the free end 211 of the chassis 21 from a preset horizontal state to a preset lifted state; wherein, the lifted state and the lifting height of the free end 211 are as Figure 2 shown.

[0055] The clamping and transferring device 6 is arranged at the free end 211 of the chassis 21 and corresponds to the sliding plate 23, and is used for clamping and delivering the drill pipe 92 and / or the casing 91 on the sliding plate 23 along the extending direction of the sliding plate 23. In practical applications, the clamping and transferring device 6 includes a vise structure 61 and an oil cylinder structure 62 connected to the vise structure 61. The vise structure 61 can effectively clamp the drill pipe 92 or the casing 91 of the drill string assembly 9 pushed by the pushing mechanism 22 and the sliding plate 23. The vise structure 61 can deliver the drill pipe 92 or the casing 91 of the drill string assembly 9 to the power head 931 under the push of the oil cylinder structure 62. Among them, the overall structure of the catwalk mechanism is as Figure 1 shown, the free end 211 of the chassis 21 is as Figure 4 shown, and the structure of the sliding plate 23 is as Figure 5 shown.

[0056] In some specific embodiments, it further includes a pipe rack 5 for placing the drill string assembly 9. The pipe rack 5 is arranged on one side edge of the base 1 close to the conveying device 4; the conveying device 4 is used for docking with the pipe rack 5 to obtain the drill string assembly 9 when flipped to a first preset position, and flipped to a second preset position when the chassis 21 is in a preset horizontal state, so as to convey the drill string assembly 9 to the sliding plate 23 of the catwalk main body 2. The conveying device 4 is rotatably arranged on the base 1, and the pipe rack 5 is arranged on one side edge of the base 1 close to the conveying device 4, as Figure 3 shown in the top view.

[0057] In some specific embodiments, the pushing mechanism 22 includes a movable jacking part 221, and the jacking part 221 is used for moving along the extending direction of the chassis 21 to jack up the drill pipe 92 in the casing 91, so that the drill pipe 92 is exposed from the casing 91;

[0058] One end of the lifting part 221 close to the free end 211 of the chassis 21 is provided with a lifting platform, the outer diameter of the lifting platform is not larger than the inner diameter of the sleeve 91 and not smaller than the outer diameter of the drill pipe 92; or one end of the lifting part 221 close to the drill tool group 9 is provided with a lifting groove, the outer diameter of the lifting groove is not larger than the inner diameter of the sleeve 91, and the inner diameter of the lifting groove is not smaller than the outer diameter of the drill pipe 92. By setting the outer diameter of the lifting platform or the outer diameter and inner diameter of the lifting groove, the lifting platform can smoothly enter the sleeve 91 and push the drill pipe 92 in the sleeve 91 out by a preset distance to expose it from the sleeve 91.

[0059] In some specific embodiments, the conveying device 4 includes a fixed part 41, a movable part 42 and a limiting rod 43. The fixed part 41 is arranged on the base 1, and the movable part 42 is rotatably arranged on the fixed part 41;

[0060] One end of the limiting rod 43 is movably connected to the fixed part 41, and the other end of the limiting rod 43 is provided with a sliding limiting groove 431. A first end point 432 is arranged near the connection between the limiting rod 43 and the fixed part 41, and a second end point 433 is arranged far from the connection between the limiting rod 43 and the fixed part 41 in the sliding limiting groove 431;

[0061] A slider 421 is protrudingly arranged on the movable part 42. The slider 421 is slidably arranged in the sliding limiting groove 431. The movable part 42 is used to flip to a first preset position when the slider 421 is located at the first end point 432 and flip to a second preset position when the slider 421 is located at the second end point 433.

[0062] In some specific embodiments, a bent part 422 extends from the free end 211 of the movable part 42. The bent part 422 and the movable part 42 form a first preset angle, and the first preset angle is between 100° and 150°. The first preset angle is as shown by the angle α in the figure; the bent part 422 is used to abut against the pipe row rack 5 when the movable part 42 flips to the first preset position to receive the drill tool group 9 on the pipe row rack 5; one side of the fixed part 41 abuts against the chassis 21 in a preset flat state, and the other side of the fixed part 41 is rotatably connected to the movable part 42. The movable part 42 is used to drive the drill tool group 9 to slide when flipping to the second preset position and abut against the chassis 21 through the fixed part 41 so that the drill tool group 9 enters the sliding plate 23. Figure 6

[0063] In practical applications, the transition between the bent part 422 and the movable part 42 can be set as an arc structure, so that when the bent part 422 abuts against the pipe row rack 5 and obtains the drill tool group 9, the drill tool group 9 can contact the movable part 42 through the arc structure during the process of rolling along the bent part 422 to the abutting position between the movable part 42 and the chassis 21, reducing the friction between the drill tool group 9 and the movable part 42 during the rolling process and preventing the drill tool group 9 from being worn.

[0064] In some specific embodiments, the lifting device 3 includes a lifting rod group 31 and an auxiliary rod group 32, wherein the lifting rod group 31 includes a folding part; a first connection point 331 close to the free end 211 of the chassis 21 and a second connection point 332 far from the free end 211 of the chassis 21 are arranged on the base 1; a third connection point 333 is arranged on the side of the chassis 21 facing the base 1. One end of the lifting rod group 31 is connected to the first connection point 331 on the base 1, and the other end is connected to the third connection point 333 on the chassis 21; one end of the auxiliary rod group 32 is connected to the second connection point 332 on the base 1, and the other end is connected to the third connection point 333 on the chassis 21. By arranging the lifting rod group 31 and the auxiliary rod group 32, multiple support points can be provided for the chassis 21, and the auxiliary rod group 32 can share the pressure of lifting the chassis 21, so that the lifting device 3 can lift the chassis 21 faster.

[0065] In some specific embodiments, one or more groups of support mechanisms 7 are arranged on both sides of the base 1. The support mechanism 7 includes a transverse connecting piece and a hydraulic leg; one end of the transverse connecting piece is rotatably connected to the side edge of the base 1, and the other end is connected to the hydraulic leg; the hydraulic leg is used for telescoping to drive the overall lifting or lowering of the base 1. In practical applications, the hydraulic leg includes a long-stroke telescopic hydraulic leg, which can lift the base 1 to a relatively high height, so as to lift the chassis 21 of the catwalk mechanism and all components located on the chassis 21, which can better adapt to the height of the power head 931 that needs to be docked with the catwalk mechanism at different heights, and can also better place the catwalk mechanism on an external transporting device to transport the catwalk mechanism.

[0066] In some specific embodiments, the sliding plate 23 has a receiving groove 231, and the receiving groove 231 extends along the length direction of the sliding plate 23 for receiving the drill string group 9; in practical applications, the groove wall 232 of the receiving groove 231 can present a V-shaped structure, so that the receiving groove 231 is a V-shaped groove, and the groove wall 232 of the receiving groove 231 forms a second preset angle with the plane where the chassis 21 is located for limiting the drill string group 9 to provide support for the drill string group 9. As Figure 1 and Figure 7 shown, wherein the second preset angle is as Figure 7 the angle β shown in

[0067] In some specific embodiments, an adjusting mechanism 234 is further included. The adjusting mechanism 234 is rotatably arranged on the groove wall 232 of the receiving groove 231 and is used for swinging relative to the groove wall 232 of the receiving groove 231 to push the drill string group 9 in the receiving groove 231 out of the sliding plate 23.

[0068] In some specific embodiments, a limiting block 233 is further provided on the chassis 21 on the side of the receiving groove 231 away from the drill string assembly 9. The side wall of the limiting block 233 facing the receiving groove 231 forms a third preset angle with the plane where the chassis 21 is located; the angle of the third preset angle is greater than the second preset angle.

[0069] In practical applications, during the overall operation of the catwalk mechanism, due to inertia, when the conveying device 4 conveys the drill string assembly 9 to the receiving groove 231 on the chassis 21, if the depth of the receiving groove 231 is insufficient and the moving speed of the drill string assembly 9 is too fast, the drill string assembly 9 may move to an area beyond the receiving groove 231. At this time, the limiting block 233 can be set to limit and block the drill string assembly 9.

[0070] Further, as Figure 7 shown in the cross-sectional view of the receiving groove 231 and the limiting block 233 on the sliding plate 23 in the first preset direction, the third preset angle is as Figure 7 shown by the angle θ in Figure 7 and the plane where the chassis 21 is located is as Figure 5 shown by the plane b in Figure 5 where the first preset direction is as Figure 5 shown by the direction A in Figure 5 . By making the angle of the third preset angle formed by the side groove wall 232 of the limiting block 233 facing the receiving groove 231 and the plane where the chassis 21 is located greater than the second preset angle, the side groove wall 232 of the sliding plate 23 can be extended to a certain extent, providing a supporting force for the drill string assembly 9 and a resistance to its movement, so as to stably limit the drill string assembly 9 in the receiving groove 231 and prevent the drill string assembly 9 from accidentally rolling out from the other side groove wall 232 of the receiving groove 231, ensuring the normal execution of the drill string assembly transportation process. In a specific embodiment, the angle θ can be 90 degrees.

[0071] In some specific embodiments, the length extension direction of the sliding plate 23 is parallel to the axial directions of the casing 91 and the drill pipe 92 of the drill string assembly 9. In a specific embodiment, the pipe rack 5 includes a support pipe rack, wherein the extension direction of the support pipe rack has an intersection point with the extension direction of the chassis 21 and the extension direction of the drill string assembly 9. This enables multiple drill string assemblies 9 to be arranged on the support pipe rack and continuously convey the drill string assemblies 9 towards the conveying device 4.

[0072] In a specific embodiment, a power mechanism is further connected to the pipe rack 5. This power mechanism is used to generate a thrust in the direction towards the chassis 21 on the pipe rack 5 to push the drill string assemblies 9 on the pipe rack 5 to the area where they abut against the conveying device 4 on the pipe rack 5.

[0073] This embodiment provides a catwalk mechanism. By setting a base, a catwalk main body, a lifting device, a conveying device, and a pipe rack, and enabling the cooperation between various components, it can achieve the automatic conveyance of a drill string assembly, the separate docking of drill pipes and casing pipes in the drill string assembly with a power head, and the position conveyance. It greatly reduces the amount of manual labor input in the project, reduces the manual operation steps, and effectively improves the efficiency and safety of drilling construction.

[0074] Embodiment 2

[0075] Embodiment 2 of this application discloses an automatic drill string feeding system, and the specific solution is as follows:

[0076] An automatic drill string feeding system includes any one of the catwalk mechanisms in the foregoing technical solutions. As Figure 8 shown, it further includes a derrick 93 and a power head 931, and the power head 931 is movably arranged on the derrick 93. The clamping and transferring device 6 is used to sequentially clamp the drill pipe 92 and the casing pipe 91 on the sliding plate 23, and sequentially deliver the drill pipe 92 and the casing pipe 91 along the extending direction of the sliding plate 23;

[0077] The power head 931 is used to move to an area close to the clamping and transferring device 6 and tilt up after the clamping and transferring device 6 delivers the drill pipe 92, so as to dock the drill pipe 92 and the casing pipe 91 in sequence.

[0078] After the power head 931 moves on the derrick 93 to an area close to the clamping and transferring device 6 and tilts up to dock with the drill pipe 92 after the clamping and transferring device 6 delivers the drill pipe 92, until the docking with the drill pipe 92 is completed, the power head 931 further docks with the casing pipe 91. Compared with the traditional conveying method, the power head 931 can sequentially and specifically automatically identify and dock the drill pipe 92 and the casing pipe 91, making the docking process more standardized, being able to quickly improve the docking efficiency, and reducing the input of manual operations.

[0079] In some specific embodiments, it further includes a first monitoring device 81, a second monitoring device 82, and a control device 10; the clamping and transferring device 6, the sliding plate 23, and the pushing mechanism 22 are respectively connected with a driving device 83; the first monitoring device 81 is arranged on the sliding plate 23 and is used to detect whether there is a drill string assembly 9 on the sliding plate 23.

[0080] The control device 10 is electrically connected to the first monitoring device 81, the second monitoring device 82, the pushing mechanism 22, the conveying device 4, and the driving device 83 respectively, and is used to control the driving device 83 to drive the pushing mechanism 22 to move when there is a drill string assembly 9 on the sliding plate 23, and control the driving device 83 to drive the conveying device 4 to obtain the drill string assembly 9 when there is no drill string assembly 9 on the sliding plate 23;

[0081] The second monitoring device 82 is arranged on the clamping and transferring device 6, and is used to detect whether there is a drill pipe 92 or a casing 91 in the clamping and transferring device 6, and whether the drill pipe 92 or the casing 91 has moved to a preset docking area. The control device 10 is also electrically connected to the power head 931, and is used to control the docking of the power head 931 with the casing 91 or the drill pipe 92 of the drill tool set 9 when the drill pipe 92 or the casing 91 moves to the preset docking area.

[0082] In practical applications, the clamping and transferring device 6 includes a vise structure 61 and an oil cylinder structure 62. The vise structure 61 is respectively connected to the oil cylinder mechanism, the driving device 83 and the control device 10. The vise structure 61 can clamp the drill pipe 92 or the casing 91 of the drill tool set 9 pushed by the clamping and pushing mechanism 22 and the sliding plate 23. The second monitoring device 82 is used to detect whether there is a drill pipe 92 or a casing 91 in the vise structure 61, and further detect whether the clamping of the drill pipe 92 or the casing 91 is completed.

[0083] In a specific application process, the receiving groove 231 in the sliding plate 23 receives the drill tool set 9 and drives the drill tool set 9 to move along the length direction of the sliding plate 23. The pushing mechanism 22 on the sliding plate 23 further enters the casing 91 in the drill tool set 9 and ejects the drill pipe 92 in the drill tool set 9 from the casing 91. When the front end of the drill pipe 92 enters the corresponding position of the vise structure 61, the vise structure 61 clamps the drill pipe 92 under the drive of the driving device 83. At this time, the oil cylinder mechanism pushes the vise structure 61 holding the drill pipe 92 to move forward along the length direction of the sliding plate 23. After moving a preset distance, the vise structure 61 returns to its original position and re-clamps the next section of the drill pipe 92, repeating the above process of delivering the drill pipe 92 to realize the process of clamping, delivering the drill pipe 92 and docking with the power head 931. After the drill pipe 92 is docked, the docking of the casing 91 is carried out.

[0084] Among them, the schematic diagram of the electrical connection relationship between the control device 10 and other modules is as Figure 9 shown.

[0085] In practical applications, the preset docking area may refer to the position corresponding to the specific length that the head of the casing 91 in the drill tool set 9 needs to extend relative to the clamping and transferring device 6, or may refer to the position corresponding to the length that the drill pipe 92 in the drill tool set 9 needs to further extend relative to the casing 91. The second monitoring device 82 can detect whether there is a corresponding drill pipe 92 group of the casing 91 or the drill pipe 92 in this preset docking area by means of sensor detection or the like.

[0086] In a specific embodiment, the user can adjust the moving distance of the pushing mechanism 22 on the chassis 21 and / or the moving distance of the sliding plate 23 according to actual requirements, the position data of the preset docking area, the relative positions and distance data between the catwalk mechanism and the drill tower 93 and the power head 931.

[0087] This embodiment provides an automatic drill string system, including any one of the catwalk mechanisms in the foregoing technical solutions. By setting the first monitoring device, the second monitoring device and the control device, the interaction and cooperation among the base, the catwalk body, the lifting device and the conveying device can be realized, and the automatic conveying of the drill string can be carried out orderly, and the drill pipe, the casing and the power head in the drill string can be respectively docked and conveyed in sequence. The manpower input in the project is greatly reduced, the manual operation steps are reduced, and the efficiency and safety of the drilling construction are effectively improved.

[0088] Those skilled in the art can understand that the drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the drawings are not necessarily essential for implementing the present application. Those skilled in the art can understand that the modules in the devices in the implementation scenario can be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or can be correspondingly changed and located in one or more devices different from the present implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules. The above serial numbers of the present application are only for description and do not represent the advantages or disadvantages of the implementation scenario. The above disclosure is only several specific implementation scenarios of the present application. However, the present application is not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present application.

Claims

1. A catwalk mechanism, characterized in that, include: Base, catwalk body, lifting device, conveying device, clamping and transferring device and pushing mechanism; The conveying device is rotatably arranged on the base, and is used to convey the drilling tool group to the catwalk body; the drilling tool group includes a casing and a drill rod arranged inside the casing; The catwalk body includes a base frame and a sliding plate, the end of the base frame is rotatably arranged on the base, the sliding plate is slidably arranged on the base frame, and the sliding plate is used to receive and push the drilling tool group transmitted from the transmission device; The pushing mechanism is arranged on the sliding plate and is used for docking with the drilling tool group to push out the drill rod in the casing; The lifting device has one end connected to the base frame and the other end connected to the base, and is used to lift the free end of the base frame from a preset flat state to a preset lifted state; The clamping and transferring device is arranged at the free end of the base frame and corresponds to the sliding plate, and is used for clamping and transferring the drill rod and / or the casing on the sliding plate along the extending direction of the sliding plate.

2. The catwalk mechanism according to claim 1, characterized in that, It also includes a pipe rack for placing a drilling tool group, and the pipe rack is arranged on a side edge of the base close to the conveying device; the conveying device is used to abut the pipe rack to obtain the drilling tool group when flipped to a first preset position, and flip to a second preset position when the base frame is in the preset flat state, so as to transport the drilling tool group to the sliding plate of the catwalk body.

3. The catwalk mechanism according to claim 1, characterized in that, The pushing mechanism comprises a movable lifting part, and the lifting part is used to move along the extension direction of the base frame to lift the drill rod in the casing so that the drill rod is exposed from the casing; A lifting platform is provided at one end of the lifting portion close to the free end of the base frame, and the outer diameter of the lifting platform is not greater than the inner diameter of the casing and not less than the outer diameter of the drill pipe; or a lifting groove is provided at one end of the lifting portion close to the drilling tool group, and the outer diameter of the lifting groove is not greater than the inner diameter of the casing, and the inner diameter of the lifting groove is not less than the outer diameter of the drill pipe.

4. The catwalk mechanism according to claim 2, characterized in that, The conveying device comprises a fixed part, a movable part and a limiting rod, wherein the fixed part is arranged on the base, and the movable part is rotatably arranged on the fixed part; One end of the limit rod is movably connected to the fixed part, and the other end of the limit rod is provided with a sliding limit groove, wherein the sliding limit groove is provided with a first end point near the connection between the limit rod and the fixed part, and the sliding limit groove is provided with a second end point away from the connection between the limit rod and the fixed part; A slider is protruding from the movable part, and the slider is slidably arranged in the sliding limit groove. The movable part is used to flip to the first preset position when the slider is located at the first end point, and flip to the second preset position when the slider is located at the second end point.

5. The catwalk mechanism according to claim 4, characterized in that, A bending portion extends from the free end of the movable portion, and a first preset angle is formed between the bending portion and the movable portion, and the first preset angle is between 100° and 150°; the bending portion is used to abut against the pipe rack when the movable portion is flipped to the first preset position, so as to receive the drilling tool group on the pipe rack; One side of the fixing part abuts against the chassis in a preset flat state, and the other side of the fixing part is rotatably connected with the movable part. The movable part is used for driving the drill tool set to slide when it is turned to the second preset position, and abutting against the chassis through the fixing part, so that the drill tool set enters the sliding plate.

6. The catwalk mechanism according to claim 1, characterized in that, One or more groups of support mechanisms are arranged on both sides of the base; The support mechanism includes a transverse connecting piece and a hydraulic leg; one end of the transverse connecting piece is rotatably connected to the side edge of the base, and the other end is connected to the hydraulic leg; The hydraulic leg is used for telescoping to drive the whole base to lift or lower.

7. The catwalk mechanism according to claim 1, characterized in that, The sliding plate is provided with a receiving groove, and the receiving groove extends along the length direction of the sliding plate for receiving the drill tool set; and a second preset angle is formed between the groove wall of the receiving groove and the plane where the chassis is located for limiting the drill tool set.

8. The catwalk mechanism according to claim 7, wherein It further includes an adjusting mechanism, and the adjusting mechanism is rotatably arranged on the groove wall of the receiving groove and is used for swinging relative to the groove wall of the receiving groove to push the drill tool set in the receiving groove out of the sliding plate.

9. An automatic drill tool loading system, comprising the catwalk mechanism according to any one of claims 1-8, characterized in that, It further includes a drill tower and a power head, and the power head is movably arranged on the drill tower; The clamping and transferring device is used for clamping the drill pipe and the casing on the sliding plate in sequence and delivering the drill pipe and the casing along the extending direction of the sliding plate in sequence; After the clamping and transferring device delivers the drill pipe, the power head is used for moving to the area close to the clamping and transferring device and tilting up to dock with the drill pipe and the casing in sequence.

10. The automatic tooling system according to claim 9, characterized in that, It further includes a first monitoring device, a second monitoring device and a control device; the clamping and transferring device, the sliding plate and the pushing mechanism are respectively connected with a driving device; The first monitoring device is arranged on the sliding plate and is used for detecting whether there is a drill tool set on the sliding plate; The control device is electrically connected with the first monitoring device, the second monitoring device, the pushing mechanism, the conveying device and the driving device respectively, and is used for controlling the driving device to drive the pushing mechanism to move when there is a drill tool set on the sliding plate, and controlling the driving device to drive the conveying device to obtain a drill tool set when there is no drill tool set on the sliding plate; The second monitoring device is arranged on the clamping and transferring device and is used for detecting whether there is a drill pipe or a casing in the clamping and transferring device and whether the drill pipe or the casing moves to a preset docking area; The control device is also electrically connected with the power head and is used for controlling the power head to dock with the casing or the drill pipe of the drill tool set when the drill pipe or the casing moves to the preset docking area.

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