Automatic drilling platform system for drilling and completion pipe strings

Abstract

The present invention provides an automatic upper and lower drilling platform system for drilling and completion pipes, which includes a ground pipe arrangement device and a pipe arrangement upper and lower drilling platform device. The ground pipe arrangement device at least includes a catwalk and a pipe arrangement rack arranged side by side. The catwalk is rotatably connected to a pipe arrangement rack flap on one side of the pipe arrangement rack. The pipe arrangement rack flap can be rotated to move the pipe from the pipe arrangement rack to the catwalk. The pipe arrangement upper and lower drilling platform device includes a base, a lifting mechanism and a gripping mechanism. The base is arranged above the catwalk. The first end of the lifting mechanism is connected to the base and can rotate around the base. The first end of the gripping mechanism is connected to the second end of the lifting mechanism and can rotate around the second end of the lifting mechanism. The second end of the gripping mechanism is provided with a gripping mechanism for clamping the pipe. The lifting mechanism rotates around the base to drive the gripping mechanism to rise and fall. The gripping mechanism can drive the pipe to rotate around the lifting mechanism. The present invention can complete the automated operation of drilling and completion pipes of different diameters and lengths from the ground to the rat hole or wellhead on the drilling platform.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling machinery, in particular to an automatic drilling platform upper and lowering system for drilling and completing a well pipe column. Background Art

[0002] The automatic drilling platform system for drilling and completion pipes is an important part of the automated drilling rig. It is mainly used to complete the automatic transfer of various specifications of drilling and completion pipes from the ground pipe rack to the rat hole on the drilling platform or the center of the wellhead. The existing automatic drilling and completion pipe system has the following problems:

[0003] 1. The upper and lower drilling platform devices of the pipe string are composed of a power catwalk, a flip elevator, a drilling platform manipulator, etc. The lifting system and the three sets of devices cooperate with each other to complete the upper and lower drilling platform operations of the pipe string. The operation process is cumbersome, the system operation efficiency is low, and the degree of automation is low;

[0004] 2. The turning elevator needs to replace the bushing according to the diameter of the pipe column. The drill pipe, drill collar, casing, etc. must all be replaced with different turning elevators. When the drill collar is operated on and off the drilling platform, the lifting short section must be installed;

[0005] 3. When the pipe string is on the drilling platform, it is difficult to move the pipe string at the rathole position to make it perpendicular to the drilling platform surface, which increases the difficulty of accurate positioning of subsequent actions; and the positioning accuracy of the up and down position of the pipe string on the drilling platform controlled by the lifting system is low, and multiple repeated operations are required to complete the positioning. Summary of the invention

[0006] The purpose of the present invention is to provide an automatic drilling platform upper and lower system for drilling and completing pipes with different diameters and lengths, which can complete the automated operation of drilling and completing pipes from the ground to a rat hole or a wellhead on the drilling platform.

[0007] In order to achieve the above object, the present invention provides a system for automatically raising and lowering a drilling platform for a drilling and completion pipe string, which comprises:

[0008] A ground pipe arrangement device, which at least comprises a catwalk and a pipe rack arranged side by side, wherein a pipe rack flap can be rotatably connected to a side of the catwalk close to the pipe rack, and the pipe column can be moved from the pipe rack to the catwalk by rotating the pipe rack flap;

[0009] A device for raising and lowering a drilling platform for a pipe column comprises a base, a lifting mechanism and a gripping mechanism, wherein the base is arranged above the catwalk, a first end of the lifting mechanism is connected to the base and can rotate around the base, a first end of the gripping mechanism is connected to the second end of the lifting mechanism and can rotate around the second end of the lifting mechanism, a gripping mechanism is provided at the second end of the gripping mechanism for clamping the pipe column, the gripping mechanism is driven to rise and fall by the lifting mechanism rotating around the base, and the gripping mechanism can drive the pipe column to rotate around the lifting mechanism.

[0010] The automatic drilling platform system for drilling and completion pipe strings as described above, wherein the lifting mechanism comprises:

[0011] A lifting frame, comprising two symmetrically arranged lifting brackets, wherein the first ends of the two lifting brackets are connected to the base and can rotate around the base, and the first end of the gripping mechanism is rotatably connected to the second ends of the two lifting brackets;

[0012] Two lifting hydraulic cylinders, each of the lifting hydraulic cylinders includes a lifting cylinder barrel and a lifting piston rod which is telescopically arranged in the lifting cylinder barrel. The two lifting cylinder barrels are respectively rotatably connected to the base, and the two piston rods are respectively rotatably connected to the two lifting brackets. The lifting brackets are driven to rotate around the base by the telescopic movement of the lifting piston rods.

[0013] The automatic drilling and completion tubular column upper and lower drilling platform system as described above, wherein the gripper mechanism comprises:

[0014] A grip frame, a first end of which is connected to a grip shaft, and both ends of the grip shaft are rotatably connected to the second ends of the two lifting brackets, so that the grip frame is driven to rotate around the lifting bracket through the rotation of the grip shaft;

[0015] A gripper seat is fixedly connected to the second end of the gripper frame, and a guide rail and an adjusting hydraulic cylinder are provided on the gripper seat. The gripper is movably connected to the guide rail. The adjusting hydraulic cylinder includes an adjusting cylinder barrel and an adjusting piston rod which is telescopically arranged in the adjusting cylinder barrel. The adjusting cylinder barrel is fixed to the gripper seat, and the adjusting piston rod is connected to the gripper. The gripper is driven to reciprocate along the guide rail by the telescopic movement of the adjusting piston rod.

[0016] In the automatic drilling platform upper and lowering system for drilling and completion tubulars as described above, the first end of the rotating shaft is connected to a driving mechanism.

[0017] As described above, the automatic drilling platform upper and lowering system for drilling and completion pipe strings, wherein the guide rail is connected with two grippers, the gripper seat is provided with two adjusting hydraulic cylinders, and the two adjusting piston rods of the two adjusting hydraulic cylinders are respectively connected with the two grippers.

[0018] The automatic drilling platform system for drilling and completion tubing as described above, wherein the base includes a first support and a second support symmetrically arranged, the first ends of the two lifting brackets are rotatably connected to the first support and the second support respectively through pins, and the two lifting cylinders are rotatably connected to the first support and the second support respectively.

[0019] As described above, the automatic upper and lower drilling platform system for drilling and completion tubulars, wherein a groove capable of accommodating the tubulars is provided in the middle of the catwalk, a slide rail is provided in the groove, a tubular positioning block is provided at one end of the catwalk away from the base, the tubular positioning block can move along the slide rail, a plurality of spaced protective holes are respectively provided on both sides of the groove, and retractable protective limit pins are provided in the protective holes.

[0020] The automatic drilling platform system for drilling and completion tubulars as described above, wherein the ground pipe arrangement device also includes a tubular lifting bracket, the groove is provided with a through hole corresponding to the tubular lifting bracket, and the rising of the tubular lifting bracket can lift the tubular through the through hole.

[0021] As described above, the automatic up-and-down drilling platform system for drilling and completion tubing is provided with at least one group of limit holes on the side of the catwalk close to the pipe rack, and the limit hole group includes a plurality of limit holes arranged at intervals along the extension direction of the catwalk, and retractable tubing limit pins are provided in the limit holes.

[0022] As described above, the automatic drilling platform upper and lower system for drilling and completion tubulars, wherein the catwalk is provided with a catwalk shaft arranged side by side with the groove, the catwalk shaft is located on a side close to the pipe rack, at least one catwalk flap is connected to the catwalk shaft, the catwalk flap is embedded in the catwalk and can rotate around the catwalk shaft, and the rotation of the catwalk flap can move the tubular from one side of the catwalk to the groove.

[0023] Compared with the prior art, the advantages of the present invention are as follows:

[0024] The automatic drilling and completion pipe string upper and lower drilling platform system provided by the present invention can move the pipe string from the pipe rack to the catwalk by rotating the pipe rack flap, and can rotate the pipe string from a horizontal state to a vertical state by driving the lifting mechanism and the gripper mechanism to rotate, and move the pipe string in a vertical state to a rat hole on the drilling platform or just above the wellhead, thereby realizing the automated operation of completing the drilling and completion pipe strings of different diameters and lengths from the ground to the rat hole or wellhead on the drilling platform;

[0025] The automatic drilling platform system for drilling and completion pipes provided by the present invention does not need to replace the pipe gripper according to the type and size of the pipe, and a single gripper can complete the gripping operation of all pipes;

[0026] The automatic drilling platform upper and lowering system for drilling and completion pipe strings provided by the present invention adopts hydraulic drive or motor drive for each component, so that a set of control programs can realize the movement operation of the upper and lower drilling platforms of the used pipe strings, without the need to adjust the positioning logic of the control program according to the pipe diameter and length. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0028] Figure 1 It is a schematic diagram of the main structure of the automatic drilling platform upper and lower system for drilling and completion pipe strings of the present invention;

[0029] Figure 2 yes Figure 1 A side structural schematic diagram of the automatic upper and lower drilling platform system for drilling and completion pipe strings shown;

[0030] Figure 3 yes Figure 1 The schematic diagram of the top view of the structure of the automatic drilling and completion pipe string upper and lower drilling platform system shown;

[0031] Figure 4 yes Figure 1 The structural schematic diagram of the surface pipe arrangement device for taking out the pipe string in the automatic up-and-down drilling platform system for drilling and completion pipe strings shown in FIG.

[0032] Figure 5 yes Figure 4 The schematic diagram of the structure of the ground pipe arrangement device shown in the figure moves the pipe column into the groove;

[0033] Figure 6 yes Figure 4 The schematic diagram of the structure of the ground pipe arrangement device lifting the pipe column;

[0034] Figure 7 yes Figure 1 The structural schematic diagram of the automatic drilling platform upper and lower system for gripping the drilling and completion pipe string is shown;

[0035] Figure 8 yes Figure 7 The structural schematic diagram of the pipe string lifting device in the automatic up-and-down drilling platform system for drilling and completion pipe strings shown in FIG.

[0036] Fig. 9 yes Figure 8 The schematic diagram of the structure of the upper and lower drilling platform device for rotating the pipe string is shown;

[0037] Fig.10 yes Figure 8 The schematic diagram of the structure of the upper and lower drilling platform devices of the pipe string is shown to insert the pipe string into the mouse hole;

[0038] Fig.11 yes Figure 8 The structure diagram of the upper and lower drilling platform devices for inserting the pipe string into the wellhead is shown.

[0039] Description of Figure Numbers:

[0040] 1. Ground pipe arrangement device;

[0041] 11. catwalk; 111. groove; 112. through hole; 113. catwalk flap;

[0042] 12. Pipe rack;

[0043] 13. Pipe rack flap;

[0044] 14. Pipe column positioning block;

[0045] 15. Protect the limit pin;

[0046] 16. Pipe column lifting bracket;

[0047] 17. Pipe column limit pin;

[0048] 2. Pipe string upper and lower drilling platform devices;

[0049] 21. base; 211. first support; 212. second support;

[0050] 22. Lifting mechanism; 221. Lifting bracket; 222. Lifting hydraulic cylinder;

[0051] 23. gripper mechanism; 231. gripper frame; 2311. gripper rotating shaft; 232. gripper seat; 2321. adjusting hydraulic cylinder;

[0052] 24. Grab handle;

[0053] 25. Driving motor;

[0054] 3. Drilling table; 31. Rat hole; 32. Wellhead;

[0055] 4. Pipe column. DETAILED DESCRIPTION

[0056] In order to have a clearer understanding of the technical solution, purpose and effect of the present invention, the specific implementation mode of the present invention is now described in conjunction with the accompanying drawings.

[0057] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides a system for automatically raising and lowering a drilling platform for a drilling and completion pipe string, which comprises a surface pipe arrangement device 1 and a pipe string raising and lowering a drilling platform device 2;

[0058] The ground pipe arrangement device 1 at least comprises a catwalk 11 and a pipe rack 12 arranged side by side, and a plurality of pipe columns 4 to be used are arranged side by side on the pipe rack 12, wherein the specific structure of the pipe rack 12 is the prior art and will not be described in detail herein, and a pipe rack flap 13 is rotatably connected to one side of the catwalk 11 close to the pipe rack 12, that is, the pipe rack flap 13 can rotate around the catwalk 11, and the pipe rack flap 13 can be connected to the catwalk 11 through a rotating shaft, and can also be connected to the catwalk 11 through a hinge, and the pipe rack flap 13 extends to the lower part of the pipe rack 12, and the top surface of the pipe rack flap 13 can be connected to the pipe column 4 arranged on the pipe rack 12 The pipe rack 12 is in contact with each other, and the pipe column 4 can be moved from the pipe rack 12 to the catwalk 11 by rotating the pipe rack flap 13. The rotation of the pipe rack flap 13 can be achieved by a motor drive, that is, the pipe rack flap 13 is connected to one side of the catwalk 11 through a rotating shaft, and the rotating shaft is driven by the motor to rotate, and the rotating shaft drives the pipe rack flap 13 to rotate. The rotation of the pipe rack flap 13 can also be achieved by a hydraulic cylinder drive, that is, a hydraulic cylinder is arranged on one side of the pipe rack 12 below the pipe rack flap 13, and the piston rod of the hydraulic cylinder is connected to the pipe rack flap 13, and the pipe rack flap 13 is driven to rotate around the catwalk 11 by extending the piston rod;

[0059] The pipe string upper and lower drilling platform device 2 includes a base 21, a lifting mechanism 22 and a gripping mechanism 23. The first end of the lifting mechanism 22 is connected to the base 21 and can rotate around the base 21. Specifically, the first end of the lifting mechanism 22 is connected to the base 21 through a connecting pin, and the first end of the gripping mechanism 23 is connected to the second end of the lifting mechanism 22 and can rotate around the second end of the lifting mechanism 22. The second end of the gripping mechanism 23 is provided with a gripping hand 24 for clamping the pipe string 4. The base 21 is arranged above the catwalk 11 so that the gripping hand 24 can smoothly grab the pipe string 4. The specific structure of the gripping hand 24 and the operation of grabbing the pipe string 4 are prior arts and will not be repeated here. The lifting mechanism 22 rotates around the base 21 to drive the gripping mechanism 23 to rise and fall, so as to realize the lifting of the pipe string 4. The gripping mechanism 23 can drive the pipe string 4 to rotate around the lifting mechanism 22, so as to realize the rotation of the pipe string 4 from a horizontal state to a vertical state, which is beneficial to the movement of the pipe string 4 in the rat hole 31 or the wellhead on the drilling platform 3.

[0060] When using, Figure 8 , Fig. 9 , Fig.10 and Fig.11As shown, the catwalk 11 is arranged opposite to the drilling floor 3, the base 21 is installed on the drilling rig base 21, and the base 21 is located on one side of the drilling floor 3, the pipe rack flap 13 is driven to rotate, the pipe column 4 set on the pipe rack 12 is moved to the catwalk 11, the gripper 24 tightly grasps the pipe column 4 on the catwalk 11, and the lifting mechanism 22 is driven to rotate around the base 21, so that the pipe column 4 is lifted and separated from the catwalk 11, and the pipe column 4 is rotated toward the side of the drilling floor 3, and the gripper mechanism 23 is driven to rotate. The lifting mechanism 22 is rotated to rotate the pipe string 4 from a horizontal state to a vertical state, until the pipe string 4 is in a vertical state and is located directly above the rat hole 31 on the drilling floor 3, and the driving of the lifting mechanism 22 and the gripping mechanism 23 to rotate is stopped, and the operation of moving the pipe string 4 from the ground to the rat hole 31 is completed; then the lifting mechanism 22 and the gripping mechanism 23 are continued to be driven to rotate, so that the vertical pipe string 4 is moved to directly above the wellhead of the drilling floor 3, and the operation of moving the pipe string 4 from the ground to the wellhead is completed.

[0061] The automatic drilling and completion pipe string upper and lower drilling platform system provided by the present invention can move the pipe string 4 from the pipe rack 12 to the catwalk 11 by rotating the pipe rack flap 13, and can rotate the lifting mechanism 22 and the gripping mechanism 23 to rotate the pipe string 4 from a horizontal state to a vertical state, and move the vertical pipe string 4 to the rat hole 31 on the drilling platform 3 or just above the wellhead, thereby realizing the automated operation of completing the drilling and completion pipe string 4 of different diameters and lengths from the ground to the rat hole 31 on the drilling platform 3 or the wellhead.

[0062] In one embodiment of the present invention, Figure 1 and Figure 3 As shown, the lifting mechanism 22 includes a lifting frame and two lifting hydraulic cylinders 222, wherein the lifting frame includes two symmetrically arranged lifting brackets 221, the two lifting brackets 221 have the same structure, and the two lifting brackets 221 are arranged at intervals, the first ends of the two lifting brackets 221 are connected to the base 21 and can rotate around the base 21, specifically, the two lifting brackets 221 are connected to the base 21 through connecting pins respectively, and the first end of the gripping mechanism 23 can be rotatably connected to the second ends of the two lifting brackets 221; the lifting hydraulic cylinder 222 includes a lifting frame. The lifting cylinder and the telescopic lifting piston rod are arranged in the lifting cylinder. The two lifting cylinders are respectively rotatably connected to the base 21, and the two piston rods are respectively rotatably connected to the two lifting brackets 221. Specifically, the lifting cylinder is connected to the base 21 through a connecting pin, and the lifting bracket 221 is provided with a connecting leg. The lifting piston rod is connected to the connecting leg of the lifting bracket 221 through a connecting pin. The lifting bracket 221 is driven to rotate around the base 21 by the telescopic lifting piston rod to realize the movement of the pipe column 4 from the catwalk 11 to the drilling table 3.

[0063] It should be noted that the lifting mechanism 22 may also be only a lifting frame, and the lifting frame is driven to rotate by a motor.

[0064] Further, if Figure 1 , Figure 2 and Figure 3 As shown, the gripping mechanism 23 includes a gripping frame 231 and a gripping seat 232, wherein the first end of the gripping frame 231 is connected to a gripping shaft 2311, the gripping frame 231 cannot rotate relative to the gripping shaft 2311, and the two ends of the gripping shaft 2311 can be rotatably connected to the second ends of the two lifting brackets 221, and the gripping frame 231 is driven to rotate around the lifting bracket 221 through the rotation of the gripping shaft 2311; the gripping seat 232 is fixedly connected to the second end of the gripping frame 231, and the gripping seat 232 is fixedly connected to the second end of the gripping frame 231. A guide rail and an adjusting hydraulic cylinder 2321 are provided on 232, and the gripper 24 is movably connected to the guide rail. The adjusting hydraulic cylinder 2321 includes an adjusting cylinder barrel and an adjusting piston rod which is retractable and arranged in the adjusting cylinder barrel. The adjusting cylinder barrel is fixed on the gripper seat 232, and the adjusting piston rod is connected to the gripper 24. The gripper 24 is driven to move back and forth along the guide rail by the extension and retraction of the adjusting piston rod, so as to realize appropriate adjustment of the pipe string 4 in the vertical direction after the transportation is completed, so as to meet the single-root connection operation of pipe strings 4 of different lengths.

[0065] Furthermore, the first end of the rotating shaft is connected to a driving mechanism, which can be a hydraulic motor or a driving motor. Preferably, the driving mechanism is a driving motor 25, and the output shaft of the driving motor 25 is connected to the rotating shaft. The rotating shaft rotates under the drive of the driving motor 25, thereby driving the grab frame 231 to rotate around the lifting bracket 221.

[0066] Of course, in order to improve the control over the rotation angle of the rotating shaft, a gear pair may also be provided between the rotating shaft and the output shaft of the driving motor 25 .

[0067] It should be noted that when a hydraulic motor is used as a driving mechanism, the rotating shaft and the hydraulic motor can be made in one piece.

[0068] Furthermore, in order to improve the stability of the gripper 24 in gripping the pipe column 4, two grippers 24 are connected to the guide rail, and two adjusting hydraulic cylinders 2321 are provided on the gripper seat 232. The two adjusting piston rods of the two adjusting hydraulic cylinders 2321 are respectively connected to the two grippers 24, that is, the two grippers 24 can reciprocate along the guide rail under the telescopic action of the adjusting piston rods connected to them.

[0069] Furthermore, in order to reduce the overall weight of the base 21, the base 21 includes a symmetrically arranged first support 211 and a second support 212. The first ends of the two lifting brackets 221 are rotatably connected to the first support 211 and the second support 212 through pins, and the two lifting cylinders are respectively connected to the first support 211 and the second support 212. This can reduce the overall volume of the base 21, thereby reducing the overall weight of the base 21 and facilitating transportation.

[0070] In one embodiment of the present invention, Figure 3 and Figure 4 As shown, a groove 111 capable of accommodating the pipe column 4 is provided in the middle of the catwalk 11, and the groove 111 is arranged along the extension direction of the catwalk 11. The gripper 24 is located directly above the groove 111. A slide rail is provided in the groove 111. A pipe column positioning block 14 is provided at one end of the catwalk 11 away from the base 21. The pipe column positioning block 14 can move along the slide rail. Specifically, the pipe column positioning block 14 is driven by a hydraulic motor to move along the slide rail. Through the movement of the pipe column positioning block 14, the position of the pipe column 4 in the groove 111 can be adjusted, so that the docking operation of the pipe column 4 becomes simple and convenient. Two sides of the groove 111 are respectively provided with There are multiple protection holes arranged at intervals, and a retractable protection limit pin 15 is provided in the protection hole. The protection limit pin 15 extends out of the catwalk 11, and can play a limiting protection role for the pipe column 4 in the groove 111. When the protection limit pin 15 is retracted into the catwalk 11, it will not affect the movement of the pipe column 4 into the groove 111. Specifically, a protection drive hydraulic cylinder (not shown in the figure) is arranged below the protection limit pin 15, and the protection limit pin 15 is connected to the piston rod of the protection drive hydraulic cylinder. The protection limit pin 15 is extended out of the catwalk 11 or retracted into the catwalk 11 by retracting the piston rod of the protection drive hydraulic cylinder.

[0071] Further, if Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in order to enable the gripper 24 to conveniently grip the pipe column 4 in the groove 111 of the catwalk 11, the ground pipe laying device 1 also includes a pipe column lifting bracket 16. The groove 111 is provided with a through hole 112 corresponding to the pipe column lifting bracket 16. The rising of the pipe column lifting bracket 16 can lift the pipe column 4 through the through hole 112. Specifically, when the pipe column moves into the groove 111, the pipe column lifting bracket 16 is adjusted to rise and the pipe column 4 is lifted up, so that the pipe column 4 is inserted into the gripper 24, so that the gripper 24 can firmly grip the pipe column 4. After the gripper 24 grips the pipe column 4, the pipe column lifting bracket 16 is adjusted to descend, so that the next pipe column 4 can be moved into the groove 111.

[0072] The pipe column lifting bracket 16 can be lifted and lowered by a hydraulic cylinder.

[0073] Further, if Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, at least one set of limiting holes is provided on one side of the catwalk 11 close to the pipe rack 12, and the limiting hole group includes a plurality of limiting holes arranged at intervals along the extension direction of the catwalk 11, and a retractable pipe column limiting pin 17 is provided in the limiting hole, and the limiting pin can limit the multiple pipe columns 4 on the pipe rack flap 13, so that only one pipe column 4 can be moved onto the catwalk 11. When the pipe column limiting pin 17 is extended, only one pipe column 4 can be moved onto the catwalk 11, and by rotating the pipe rack The flap 13 allows the other pipe strings 4 to move back to the pipe rack 12, and the pipe string limit pin 17 retracts back into the catwalk 11, so that the pipe string 4 can be moved into the groove 111 for subsequent operations. Specifically, a limit drive hydraulic cylinder (not shown in the figure) is arranged below the pipe string limit pin 17, and the pipe string limit pin 17 is connected to the piston rod of the limit drive hydraulic cylinder. The pipe string limit pin 17 is extended out of the catwalk 11 or retracted into the catwalk 11 by the extension and contraction of the piston rod of the limit drive hydraulic cylinder.

[0074] It should be noted that, according to the diameters of different pipe strings, multiple rows of limit hole groups can be set on the catwalk 11. By having different distances between each limit hole and the edge of the catwalk 11, the pipe string limit pin 17 can be suitable for pipe strings of different sizes.

[0075] Further, if Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the catwalk 11 is provided with a catwalk 11 rotating shaft (not shown in the figure) arranged side by side with the groove 111, and the catwalk 11 rotating shaft is located on a side close to the pipe rack 12. At least one catwalk flap 113 is connected to the catwalk 11 rotating shaft. The catwalk flap 113 is embedded in the catwalk 11 and can rotate around the catwalk 11 rotating shaft, and the rotation of the catwalk flap 113 can move the pipe column 4 from one side of the catwalk 11 to the groove 111. Specifically, a flap hydraulic cylinder is provided under the catwalk flap 113, and the piston rod of the flap hydraulic cylinder extends out to push the catwalk flap 113, so that the catwalk flap 113 rotates around the catwalk 11.

[0076] When in use, ensure that the pipe column limit pin 17 is retracted back into the catwalk 11, drive the piston rod of the flap hydraulic cylinder to extend to push the catwalk flap 113, the catwalk flap 113 rotates around the catwalk 11, pushes the pipe column 4 into the groove 111, drives the piston rod of the protection drive hydraulic cylinder to extend, makes the protection limit pin 15 extend out of the catwalk 11, and restricts the pipe column 4 in the groove 111.

[0077] The working process of the automatic drilling platform system for drilling and completion pipe strings provided by the present invention is described in detail below with reference to the accompanying drawings:

[0078] When in use, the catwalk 11 is arranged opposite to the drilling table 3, the base 21 is installed on the drilling rig base 21, and the base 21 is located on one side of the drilling table 3, such as Figure 4As shown, according to the size of the pipe string to be used, a limit driving hydraulic cylinder connected to a pipe string limit pin 17 is arranged below the corresponding limit hole, and the pipe string limit pin 17 is driven to extend out of the catwalk 11 by extending the piston rod of the limit driving hydraulic cylinder, and then the pipe rack 12 is driven to rotate by a hydraulic cylinder (not shown in the figure) arranged below the pipe rack flap 13, so that the pipe string 4 on the pipe rack 12 is moved to the catwalk 11. Due to the effect of the pipe string limit pin 17, only one pipe string 4 can remain on the catwalk 11. At this time, Figure 5 As shown, the piston rod of the hydraulic cylinder driving the flap extends out to push the catwalk flap 113, and the catwalk flap 113 rotates around the catwalk 11, pushing the pipe column 4 into the groove 111, driving the piston rod of the protection driving hydraulic cylinder to extend, so that the protection limit pin 15 extends out of the catwalk 11, restricting the pipe column 4 in the groove 111, and the pipe column positioning block 14 adjusts the horizontal position of the pipe column 4; Figure 6 As shown, the pipe column lifting bracket 16 is driven to rise to lift the pipe column 4, and the pipe column 4 is placed in the gripper 24, as shown in FIG. Figure 7 As shown, the gripper 24 firmly grasps the pipe column 4, and then, as shown in FIG. Figure 8 , Fig. 9 and Fig.10 As shown, the two lifting hydraulic cylinders 222 and the driving motor 25 are synchronously driven, and the two lifting hydraulic cylinders 222 and the driving motor 25 coordinate to rotate the pipe string 4 to the top of the rat hole 31 on the drilling floor 3, and perpendicular to the drilling floor 3 and concentric with the rat hole 31, completing the movement of the pipe string 4 from the ground to the rat hole 31; Fig.11 As shown, the two lifting hydraulic cylinders 222 and the driving motor 25 are adjusted to move the pipe string 4 to the top of the wellhead, perpendicular to the drilling floor 3 and concentric with the wellhead, completing the movement of the pipe string 4 from the ground to the wellhead;

[0079] In addition, by adjusting the action of the hydraulic cylinder, the pipe string 4 can be properly adjusted in the vertical direction after the movement is completed to meet the single-piece connection operation of pipe strings 4 of different lengths.

[0080] In summary, the automatic drilling platform upper and lowering system for drilling and completion pipe strings provided by the present invention can move the pipe strings from the pipe rack to the catwalk by rotating the pipe rack flap, and can realize rotating the pipe strings from a horizontal state to a vertical state by driving the lifting mechanism and the gripper mechanism to rotate, and move the pipe strings in a vertical state to the rat hole on the drilling platform or just above the wellhead, thereby realizing the automated operation of completing drilling and completion pipe strings of different diameters and lengths from the ground to the rat hole or wellhead on the drilling platform;

[0081] The automatic drilling platform system for drilling and completion pipes provided by the present invention does not need to replace the pipe gripper according to the type and size of the pipe, and a single gripper can complete the gripping operation of all pipes;

[0082] The automatic drilling platform upper and lowering system for drilling and completion pipe strings provided by the present invention adopts hydraulic drive or motor drive for each component, so that a set of control programs can realize the movement operation of the upper and lower drilling platforms of the used pipe strings, without the need to adjust the positioning logic of the control program according to the pipe diameter and length.

[0083] The above description is only an illustrative specific implementation mode of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any technician in the field without departing from the concept and principle of the present invention should fall within the scope of protection of the present invention. It should also be noted that the various components of the present invention are not limited to the above-mentioned overall application. The various technical features described in the specification of the present invention can be selected one by one or multiple ones can be selected and used in combination according to actual needs. Therefore, the present invention naturally covers other combinations and specific applications related to the invention point of this case.

Claims

1. A system for automatically raising and lowering a drilling platform for a drilling and completion pipe string, characterized in that: The automatic drilling platform system for drilling and completion pipe strings includes: A ground pipe arrangement device, which at least comprises a catwalk and a pipe rack arranged side by side, wherein a pipe rack flap can be rotatably connected to a side of the catwalk close to the pipe rack, and the pipe column can be moved from the pipe rack to the catwalk by rotating the pipe rack flap; A device for raising and lowering a pipe column on a drilling platform comprises a base, a lifting mechanism and a gripping mechanism, wherein the base is arranged above the catwalk, a first end of the lifting mechanism is connected to the base and can rotate around the base, a first end of the gripping mechanism is connected to a second end of the lifting mechanism and can rotate around the second end of the lifting mechanism, a gripping mechanism is provided at the second end for clamping the pipe column, the lifting mechanism is rotated around the base to drive the gripping mechanism to rise and fall, and the gripping mechanism can drive the pipe column to rotate around the lifting mechanism; The lifting mechanism comprises: A lifting frame, comprising two symmetrically arranged lifting brackets, wherein the first ends of the two lifting brackets are connected to the base and can rotate around the base, and the first end of the gripping mechanism is rotatably connected to the second ends of the two lifting brackets; Two lifting hydraulic cylinders, each of which comprises a lifting cylinder barrel and a lifting piston rod which is retractable and arranged in the lifting cylinder barrel, the two lifting cylinder barrels are respectively rotatably connected to the base, the two piston rods are respectively rotatably connected to the two lifting brackets, and the lifting brackets are driven to rotate around the base by the extension and retraction of the lifting piston rods; The gripper mechanism comprises: A grip frame, a first end of which is connected to a grip shaft, and both ends of the grip shaft are rotatably connected to the second ends of the two lifting brackets, so that the grip frame is driven to rotate around the lifting bracket through the rotation of the grip shaft; A gripper seat, which is fixedly connected to the second end of the gripper frame, the gripper seat is provided with a guide rail and an adjusting hydraulic cylinder, the gripper is movably connected to the guide rail, the adjusting hydraulic cylinder comprises an adjusting cylinder barrel and an adjusting piston rod which is telescopically arranged in the adjusting cylinder barrel, the adjusting cylinder barrel is fixed to the gripper seat, the adjusting piston rod is connected to the gripper, and the gripper is driven to reciprocate along the guide rail by the telescopic adjustment of the adjusting piston rod; The first end of the rotating shaft is connected to a driving mechanism; The guide rail is connected with two grippers, the gripper seat is provided with two adjusting hydraulic cylinders, and the two adjusting piston rods of the two adjusting hydraulic cylinders are respectively connected with the two grippers; A groove capable of accommodating the pipe column is provided in the middle of the catwalk, a slide rail is provided in the groove, a pipe column positioning block is provided at one end of the catwalk away from the base, the pipe column positioning block can move along the slide rail, a plurality of protection holes arranged at intervals are respectively provided on both sides of the groove, and a retractable protection limit pin is provided in the protection hole; The ground pipe arrangement device further comprises a pipe column lifting bracket, the groove is provided with a through hole corresponding to the pipe column lifting bracket, and the pipe column lifting bracket can lift the pipe column through the through hole when it rises; At least one set of limiting holes is provided on one side of the catwalk close to the pipe rack, wherein the limiting holes include a plurality of limiting holes spaced apart along the extending direction of the catwalk, and a retractable pipe column limiting pin is provided in the limiting holes; The catwalk is provided with a catwalk shaft arranged side by side with the groove, the catwalk shaft is located on a side close to the pipe rack, at least one catwalk flap is connected to the catwalk shaft, the catwalk flap is embedded in the catwalk and can rotate around the catwalk shaft, and the rotation of the catwalk flap can move the pipe column from one side of the catwalk to the groove.

2. The automatic drilling and completion tubular column ascending and descending drilling platform system according to claim 1 is characterized in that: The base includes a first support and a second support symmetrically arranged, the first ends of the two lifting brackets are rotatably connected to the first support and the second support through pins, and the two lifting cylinders are rotatably connected to the first support and the second support.

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