Automated ground casing root system establishment and method

Abstract

This invention discloses an automated ground casing root-establishing system comprising several first hydraulic pipe racks, each equipped with a first lifting cylinder at one end and a second lifting cylinder at the other end. A casing conveyor is located on the side of the first hydraulic pipe racks closest to the first lifting cylinders. A casing fastener is positioned between the casing conveyors. Several second hydraulic pipe racks are located on the side of the casing conveyors furthest from the first hydraulic pipe racks. A power catwalk is located on the other side of the second hydraulic pipe racks. This invention also discloses an automated ground casing root-establishing method: raising the first hydraulic pipe racks to allow the casing to enter the casing conveyors; starting the pipe conveyors and fastening the casing; conveying the fastened casing to the second hydraulic pipe racks, then to the power catwalk, and finally conveying the fastened casing to the drilling platform. This method automates ground casing root-establishing and improves casing conveying efficiency.

Description

Technical Field

[0001] This invention belongs to the field of oil drilling and development technology, and relates to an automatic root establishment system and method for surface casing. Background Technology

[0002] On existing land-based oil drilling rigs, the conventional casing delivery operation first involves placing the casing on a ground pipe rack, then workers use slings or hooks to secure it to both ends of the casing, and then use a crane to lift and deliver the casing one by one to the drilling platform. This is very cumbersome, requires a lot of work, and only one casing can be delivered to the drilling platform at a time, which reduces the efficiency of casing delivery and introduces unstable factors to downhole safety. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic root establishment system for ground casing, which solves the problem that manual fixation of both ends of the casing is required in existing single casing transportation operations.

[0004] Another objective of this invention is to provide an automatic root establishment method for ground casing.

[0005] The first technical solution adopted in this invention is an automatic root establishment system for ground casing, including a plurality of first hydraulic pipe racks, each of which has a first lifting cylinder at one end and a second lifting cylinder at the other end. Pins are fixed to the top of the first hydraulic pipe racks near the top of the first lifting cylinders. A casing conveyor is provided on the side of the first hydraulic pipe racks near the first lifting cylinders. Each first hydraulic pipe rack corresponds to multiple casing conveyors, and casing fasteners are provided between the multiple casing conveyors. A plurality of second hydraulic pipe racks are provided on the side of the casing conveyors away from the first hydraulic pipe racks. The column spacing of each second hydraulic pipe rack is greater than the column spacing of the first hydraulic pipe racks. A power catwalk is provided on the other side of the plurality of second hydraulic pipe racks.

[0006] The features of this invention are: The second hydraulic pipe rack has a third lifting cylinder at one end and a fourth lifting cylinder at the other end, with the third lifting cylinder located near the side of the first hydraulic pipe rack.

[0007] The casing conveyor includes a first kicking cylinder, and a second kicking cylinder is also provided on the side of the first kicking cylinder near the second hydraulic pipe rack. The first kicking cylinder and the second kicking cylinder are both fixedly connected to a kicking rod. The end of the kicking rod is located between the columns of the first hydraulic pipe rack, and a first stop pin is fixedly connected to the top of the kicking rod near the end of the second kicking cylinder.

[0008] Several casing conveyors also include a first lifting cylinder and a second lifting cylinder located on one side of the kick rod. The first lifting cylinder and the second lifting cylinder are fixedly connected to a roller. A motor is provided on one side of the roller. The first stop pin and the second lifting cylinder are located on the same horizontal line. Several casing conveyors also include a first kick-out cylinder on the side away from the first lifting cylinder and the second lifting cylinder. A second kick-out cylinder is also provided on the side of the first kick-out cylinder near the second hydraulic pipe rack. The first kick-out cylinder and the second kick-out cylinder are jointly fixedly connected to a kick-out rod. A second stop pin is fixedly connected to the top of the kick-out rod near the end of the second kick-out cylinder.

[0009] Several sleeve fasteners include a spiral clamp, with a push cylinder on one side of the spiral clamp and a clamping clamp on the other side.

[0010] The power catwalk includes a third lifting cylinder, which is located at one end of the power catwalk and is hinged to a first bracket. The first bracket is a curved arm. The third lifting cylinder is hinged to the upper part of the first bracket. The other end of the power catwalk is hinged to a fourth lifting cylinder, which is also hinged to a second bracket. The length of the first bracket is greater than the length of the second bracket. A drill string is hinged between the first bracket and the second bracket, and a pulley is provided on the drill string.

[0011] The second technical solution adopted in this invention is an automatic root establishment method for ground casing, and an automatic root establishment system for ground casing, which is implemented according to the following steps: Step 1: Place the casing on the first hydraulic pipe rack, raise the first hydraulic pipe rack, and let the casing enter the casing conveyor. Step 2: Start the pipe conveyor to bring the casing closer to the casing fastener and fasten the casing. Step 3: The upper-coiled casing is transferred to the second hydraulic pipe rack, then to the power cat track, and finally the upper-coiled casing is transferred to the drilling platform by the power cat track.

[0012] The invention is further characterized by: Step 1 is as follows: Step 101: Place the sleeve on the first hydraulic pipe rack, keep the first lifting cylinder stationary and raise the second lifting cylinder, so that the first hydraulic pipe rack tilts to the side of the first lifting cylinder and the sleeve rolls to the side of the first lifting cylinder until it stops at the end of the first lifting cylinder pin. Step 102: Keep the second kicking cylinder stationary and raise the first kicking cylinder so that the kicking rod tilts toward the second kicking cylinder. Lift the sleeve and roll it toward the second kicking cylinder until it stops at the first stop pin. Let the sleeve slide into the roller. Lower the first kicking cylinder to return to the initial state and make the kicking rod horizontal. Step 103: Simultaneously raise the first lifting cylinder and the second lifting cylinder, and raise the casing to the same height as the casing upper clamp. At the same time, start the motor, and the motor drives the roller to rotate. The rotation of the roller drives the casing to move closer to the casing upper clamp.

[0013] Step 2 specifically involves simultaneously moving the sleeves on both sides of the sleeve fastener toward the sleeve fastener, causing the twisting pliers at one end of the sleeve fastener to clamp one side of the sleeve and the clamping pliers to clamp the other side of the sleeve. At the same time, the push cylinder is activated, pushing the twisting pliers toward the clamping pliers until the two sleeves contact and fasten. At this point, the twisting pliers begin to rotate and fasten the sleeves on both sides. Simultaneously, the push cylinder enters floating mode, floating and following the rotation of the twisting pliers during the fastening process.

[0014] Step 3 specifically involves: Step 301: After the casing is fully engaged, start the motor. The motor drives the roller to rotate. Driven by the rotation of the roller, the casing is conveyed from the casing engagement device to the side closer to the clamping clamp, so that the engaged casing is completely put into the casing conveyor on the side closer to the clamping clamp. Step 302: Simultaneously raise the first kick-out cylinder and the second kick-out cylinder so that the height of the kick-in rod exceeds the height of the roller. At this time, keep the height of the first kick-out cylinder unchanged and continue to raise the second kick-out cylinder so that the kick-in rod tilts towards the second hydraulic pipe rack. The sleeve after being fastened rolls to one side of the second hydraulic pipe rack and finally falls completely onto the second hydraulic pipe rack. Step 303: Keep the fourth lifting cylinder stationary, raise the third lifting cylinder, so that the second hydraulic pipe rack tilts towards the power cat track side, and the upper-fastened casing enters the drill string of the power cat track. Step 304: Simultaneously raise the third and fourth lifting cylinders and start the pulley to allow the upper-locked casing to enter the drilling platform.

[0015] The beneficial effects of this invention are: This invention relates to an automatic ground casing root-establishing system. Through the installation of a hydraulic pipe rack, it achieves automatic lifting and rolling of casings on both sides. By incorporating a kicking mechanism in the casing conveyor, it automatically kicks the casings onto the conveying rollers. The conveying device of the casing conveyor enables automatic conveying, coupling, and transfer of casings, improving automation and reducing labor intensity. The casing coupling device enables automatic coupling of two casings. The kicking mechanism of the casing conveyor enables automatic kicking out of the casing root. This invention's automatic ground casing root-establishing system and method achieves automatic delivery of ground casing to the drilling platform. This method automates ground casing root-establishing, realizing the conveying, coupling, and transfer of two casings in one operation. It achieves automatic connection and delivery, reducing worker labor intensity and improving casing delivery efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first hydraulic pipe rack structure of the automatic root establishment system for ground casing of the present invention; Figure 2 This is a schematic diagram of the structure of the first hydraulic pipe rack and pipe conveyor of the automatic ground casing root establishment system of the present invention; Figure 3 This is a schematic diagram of the casing fastener and casing conveyor structure of the automatic ground casing root establishment system of the present invention; Figure 4 This is a schematic diagram of the overall structure of the automatic root establishment system for ground casing of the present invention; Figure 5 This is a schematic diagram of the second hydraulic pipe rack and pipe conveyor structure of the automatic ground casing root establishment system of the present invention; Figure 6 This is a schematic diagram of the casing conveyor structure of the automatic root establishment system for ground casing according to the present invention; Figure 7 This is a flowchart of the automatic root establishment method for ground casing of the present invention; Figure 8 This is a schematic diagram of the dynamic catwalk structure of the automatic root establishment system for ground casing of the present invention; Figure 9 This is a flowchart of the automatic root establishment method for ground casing of the present invention (Figure 2). Figure 10 This is a flowchart of the automatic root establishment method for ground casing of the present invention (Figure 3). Figure 11 This is a flowchart of the automatic root establishment method for ground casing of the present invention (Figure 4). Figure 12 Figure 5 shows the flowchart of the automatic root establishment method for ground casing of the present invention.

[0017] In the diagram, 1. First hydraulic pipe rack; 1-1. Second hydraulic pipe rack; 1-1-1. Third lifting cylinder; 1-1-2. Fourth lifting cylinder; 2. First lifting cylinder; 3. Second lifting cylinder; 4. Casing; 5. Casing conveyor; 6. First kick-in cylinder; 7. Second kick-in cylinder; 8. Kick-in rod; 9. Roller; 10. First stop pin; 11. First lifting cylinder; 12. Second lifting cylinder; 13. Motor; 14. Casing coupling device; 15. Rotary coupling pliers; 16. Clamping pliers; 17. Push cylinder; 18. First kick-out cylinder; 19. Second kick-out cylinder; 20. Kick-out rod; 21. Power catwalk; 22. Drill string feeder; 23. Third lifting cylinder; 24. Fourth lifting cylinder; 25. First support; 26. Second support; 27. Second stop pin. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1As shown, the automatic root establishment system for ground casing includes several first hydraulic pipe racks 1. Each first hydraulic pipe rack 1 has a first lifting cylinder 2 at one end and a second lifting cylinder 3 at the other end. Pins are fixed to the top of each first hydraulic pipe rack 1 near the top of the first lifting cylinder 2. Figure 2 As shown, several first hydraulic pipe racks 1 are equipped with pipe conveyors 5 near the first lifting cylinder 2, and each first hydraulic pipe rack 1 corresponds to multiple pipe conveyors 5, such as... Figure 3 As shown, a sleeve fastener 14 is provided between multiple sleeve conveyors 5, such as... Figure 4 As shown, several second hydraulic pipe racks 1-1 are provided on the side of several pipe conveyors 5 away from the first hydraulic pipe rack 1. The column spacing of each second hydraulic pipe rack 1-1 is greater than the column spacing of the first hydraulic pipe rack 1. A power catwalk 21 is provided on the other side of several second hydraulic pipe racks 1-1.

[0020] like Figure 5 As shown, a third lifting cylinder 1-1-1 is provided at one end of the second hydraulic pipe rack 1-1, and a fourth lifting cylinder 1-1-2 is provided at the other end. The third lifting cylinder 1-1-1 is located on the side of the first hydraulic pipe rack 1.

[0021] like Figure 2 As shown, the plurality of pipe conveyors 5 include a first kicking cylinder 6. A second kicking cylinder 7 is also provided on the side of the first kicking cylinder 6 near the second hydraulic pipe rack 1-1. The first kicking cylinder 6 and the second kicking cylinder 7 are both fixedly connected to a kicking rod 8. The end of the kicking rod 8 is located between the columns of the first hydraulic pipe rack 1. A first stop pin 10 is fixedly connected to the top of the kicking rod 8 near the end of the second kicking cylinder 7.

[0022] like Figure 6 As shown, the casing conveyor 5 also includes a first lifting cylinder 11 and a second lifting cylinder 12 located on one side of the kick rod 8. The first lifting cylinder 11 and the second lifting cylinder 12 are fixedly connected to a roller 9. A motor 13 is provided on one side of the roller 9. The first stop pin 10 and the second lifting cylinder 12 are located on the same horizontal line. like Figure 5 As shown, the pipe conveyor 5 also includes a first kick-out cylinder 18 on the side away from the first lifting cylinder 11 and the second lifting cylinder 12. A second kick-out cylinder 19 is also provided on the side of the first kick-out cylinder 18 near the second hydraulic pipe rack 1-1. The first kick-out cylinder 18 and the second kick-out cylinder 19 are jointly fixedly connected to a kick-out rod 20. A second stop pin 27 is fixedly connected to the top of the kick-out rod 20 near the end of the second kick-out cylinder 19.

[0023] like Figure 7 As shown, several sleeve fasteners 14 include a twisting clamp 15, with a push cylinder 17 on one side of the twisting clamp 15 and a clamping clamp 16 on the other side.

[0024] like Figure 8 As shown, the power catwalk 21 includes a third lifting cylinder 23, which is located at one end of the power catwalk 21 and is hinged to a first bracket 25. The first bracket 25 is a curved arm. The third lifting cylinder 23 is hinged to the upper part of the first bracket 25. The other end of the power catwalk 21 is hinged to a fourth lifting cylinder 24, which is also hinged to a second bracket 26. The length of the first bracket 25 is greater than the length of the second bracket 26. A drill string 22 is hinged between the first bracket 25 and the second bracket 26. A pulley is provided on the drill string 22.

[0025] The automatic root establishment method for ground casing employs an automatic root establishment system for ground casing and is implemented according to the following steps: Step 1: Place the sleeve 4 on the first hydraulic pipe rack 1, raise the first hydraulic pipe rack 1, and let the sleeve 4 enter the sleeve conveyor 5. Step 2: Start the pipe conveyor 5 to bring the sleeve 4 closer to the sleeve fastener 14 and fasten the sleeve 4. Step 3: The upper-coiled casing 4 is transferred to the second hydraulic pipe rack 1-1, and then to the power cat track 21. Finally, the power cat track 21 transfers the upper-coiled casing 4 to the drilling platform.

[0026] Step 1 is as follows: Step 101, as follows Figure 1 As shown, the sleeve 4 is placed on the first hydraulic pipe rack 1, the first lifting cylinder 2 remains stationary and the second lifting cylinder 3 is raised, so that the first hydraulic pipe rack 1 tilts to the side of the first lifting cylinder 2, and the sleeve 4 rolls to the side of the first lifting cylinder 2 until it stops at the end of the first lifting cylinder 2 pin. Step 102, as follows Figure 2 As shown, keep the second kicking cylinder 7 stationary and raise the first kicking cylinder 6, causing the kicking rod 8 to tilt towards the second kicking cylinder 7. Lift the sleeve 4 to roll towards the second kicking cylinder 7 until it stops at the first stop pin 10. Figure 3-4 As shown, the sleeve 4 slides into the roller 9, the first kicking cylinder 6 is lowered to return to the initial state, and the kicking rod 8 is in a horizontal state. Step 103, as follows Figure 3 As shown, simultaneously raise the first lifting cylinder 11 and the second lifting cylinder 12, and raise the sleeve 4 to the same height as the sleeve upper fastener 14, while simultaneously starting the motor 13, as follows. Figure 7 As shown, the motor 13 drives the roller 9 to rotate, and the rotation of the roller 9 drives the sleeve 4 to move closer to the sleeve fastener 14.

[0027] Step 2 is as follows: Figure 9As shown, the sleeves 4 on both sides of the sleeve fastener 14 move towards the sleeve fastener 14 simultaneously, causing the screw clamp 15 at one end of the sleeve fastener 14 to clamp one side of the sleeve 4, and the clamping clamp 16 to clamp the other side of the sleeve 4. At the same time, the push cylinder 17 is activated, pushing the screw clamp 15 towards the clamping clamp 16 until the two sleeves 4 contact and fasten. At this time, the screw clamp 15 begins to rotate and fasten the two sleeves 4. At the same time, the push cylinder 17 enters the floating mode, and floats and follows the rotation of the screw clamp 15 during the fastening process.

[0028] Step 3 specifically involves: Step 301, as follows Figure 10 As shown, after the sleeve 4 is fully engaged, the motor 13 is started. The motor 13 drives the roller 9 to rotate. Driven by the rotation of the roller 9, the sleeve 4 is conveyed from the sleeve engagement device 14 to the side near the clamping clamp 16, so that the sleeve 4 after engagement is completely put into the sleeve conveyor 5 on the side near the clamping clamp 16. Step 302, as follows Figure 5 As shown, simultaneously raise the first kick-out cylinder 18 and the second kick-out cylinder 19 so that the height of the kick-in rod 20 exceeds the height of the roller 9. At this point, keep the height of the first kick-out cylinder 18 unchanged and continue raising the second kick-out cylinder 19, causing the kick-in rod 20 to tilt towards the second hydraulic pipe rack 1-1, as shown. Figure 11 As shown, the sleeve 4 after being fastened rolls toward the side of the second hydraulic pipe rack 1-1 and eventually falls completely onto the second hydraulic pipe rack 1-1; Step 303, as follows Figure 12 As shown, keep the fourth lifting cylinder 1-1-2 stationary, raise the third lifting cylinder 1-1-1, so that the second hydraulic pipe rack 1-1 tilts towards the power cat track 21, and the upper-fastened casing 4 enters the drill string 22 of the power cat track 21. Step 304: Simultaneously raise the third lifting cylinder 23 and the fourth lifting cylinder 24, and start the pulley to allow the upper-locked casing 4 to enter the drilling platform.

[0029] Example 1 like Figure 1 As shown, the automatic root establishment system for ground casing includes several first hydraulic pipe racks 1. Each first hydraulic pipe rack 1 has a first lifting cylinder 2 at one end and a second lifting cylinder 3 at the other end. Pins are fixed to the top of each first hydraulic pipe rack 1 near the top of the first lifting cylinder 2. Figure 2 As shown, several first hydraulic pipe racks 1 are equipped with pipe conveyors 5 near the first lifting cylinder 2, and each first hydraulic pipe rack 1 corresponds to multiple pipe conveyors 5, such as... Figure 3 As shown, a sleeve fastener 14 is provided between multiple sleeve conveyors 5, such as... Figure 4As shown, several second hydraulic pipe racks 1-1 are provided on the side of several pipe conveyors 5 away from the first hydraulic pipe rack 1. The column spacing of each second hydraulic pipe rack 1-1 is greater than the column spacing of the first hydraulic pipe rack 1. A power catwalk 21 is provided on the other side of several second hydraulic pipe racks 1-1.

[0030] like Figure 5 As shown, a third lifting cylinder 1-1-1 is provided at one end of the second hydraulic pipe rack 1-1, and a fourth lifting cylinder 1-1-2 is provided at the other end. The third lifting cylinder 1-1-1 is located on the side of the first hydraulic pipe rack 1.

[0031] Example 2 The automatic root establishment system for ground casing provided in Example 1 is used. Figure 2 As shown, the plurality of pipe conveyors 5 include a first kicking cylinder 6. A second kicking cylinder 7 is also provided on the side of the first kicking cylinder 6 near the second hydraulic pipe rack 1-1. The first kicking cylinder 6 and the second kicking cylinder 7 are both fixedly connected to a kicking rod 8. The end of the kicking rod 8 is located between the columns of the first hydraulic pipe rack 1. A first stop pin 10 is fixedly connected to the top of the kicking rod 8 near the end of the second kicking cylinder 7.

[0032] Example 3 The automatic root establishment system for ground casing provided in Example 2 is used, such as Figure 6 As shown, the casing conveyor 5 also includes a first lifting cylinder 11 and a second lifting cylinder 12 located on one side of the kick rod 8. The first lifting cylinder 11 and the second lifting cylinder 12 are fixedly connected to a roller 9. A motor 13 is provided on one side of the roller 9. The first stop pin 10 and the second lifting cylinder 12 are located on the same horizontal line. like Figure 5 As shown, the pipe conveyor 5 also includes a first kick-out cylinder 18 on the side away from the first lifting cylinder 11 and the second lifting cylinder 12. A second kick-out cylinder 19 is also provided on the side of the first kick-out cylinder 18 near the second hydraulic pipe rack 1-1. The first kick-out cylinder 18 and the second kick-out cylinder 19 are jointly fixedly connected to a kick-out rod 20. A second stop pin 27 is fixedly connected to the top of the kick-out rod 20 near the end of the second kick-out cylinder 19.

[0033] Example 4 The automatic root establishment system for ground casing provided in Example 3 is used, such as Figure 7 As shown, several sleeve fasteners 14 include a twisting clamp 15, with a push cylinder 17 on one side of the twisting clamp 15 and a clamping clamp 16 on the other side.

[0034] Example 5 The automatic root establishment system for ground casing provided in Example 4 is used, such as Figure 8As shown, the power catwalk 21 includes a third lifting cylinder 23, which is located at one end of the power catwalk 21 and is hinged to a first bracket 25. The first bracket 25 is a curved arm. The third lifting cylinder 23 is hinged to the upper part of the first bracket 25. The other end of the power catwalk 21 is hinged to a fourth lifting cylinder 24, which is also hinged to a second bracket 26. The length of the first bracket 25 is greater than the length of the second bracket 26. A drill string 22 is hinged between the first bracket 25 and the second bracket 26. A pulley is provided on the drill string 22.

[0035] Example 6 The automatic root establishment method for ground casing uses the automatic root establishment system for ground casing provided in Example 5, and is implemented according to the following steps: Step 1: Place the sleeve 4 on the first hydraulic pipe rack 1, raise the first hydraulic pipe rack 1, and let the sleeve 4 enter the sleeve conveyor 5. Step 101, as follows Figure 1 As shown, the sleeve 4 is placed on the first hydraulic pipe rack 1, the first lifting cylinder 2 remains stationary and the second lifting cylinder 3 is raised, so that the first hydraulic pipe rack 1 tilts to the side of the first lifting cylinder 2, and the sleeve 4 rolls to the side of the first lifting cylinder 2 until it stops at the end of the first lifting cylinder 2 pin. Step 102, as follows Figure 2 As shown, keep the second kicking cylinder 7 stationary and raise the first kicking cylinder 6, causing the kicking rod 8 to tilt towards the second kicking cylinder 7. Lift the sleeve 4 to roll towards the second kicking cylinder 7 until it stops at the first stop pin 10. Figure 3-4 As shown, the sleeve 4 slides into the roller 9, the first kicking cylinder 6 is lowered to return to the initial state, and the kicking rod 8 is in a horizontal state. Step 103, as follows Figure 3 As shown, simultaneously raise the first lifting cylinder 11 and the second lifting cylinder 12, and raise the sleeve 4 to the same height as the sleeve upper fastener 14, while simultaneously starting the motor 13, as follows. Figure 7 As shown, the motor 13 drives the roller 9 to rotate, and the rotation of the roller 9 drives the sleeve 4 to move closer to the sleeve fastener 14. Step 2: Start the pipe conveyor 5 to bring the sleeve 4 closer to the sleeve fastener 14 and fasten the sleeve 4. The sleeves 4 on both sides of the sleeve fastener 14 move towards the sleeve fastener 14 at the same time, so that the twisting pliers 15 at one end of the sleeve fastener 14 clamps one side of the sleeve 4 and the clamping pliers 16 clamps the other side of the sleeve 4. At the same time, the push cylinder 17 is activated, and the push cylinder 17 pushes the twisting pliers 15 towards the clamping pliers 16 until the two sleeves 4 contact and fasten. At this time, the twisting pliers 15 begins to rotate and fasten the two sleeves 4. At the same time, the push cylinder 17 enters the floating mode and floats and follows the rotation of the twisting pliers 15 during the fastening process. Step 3: The upper-coiled sleeve 4 is transferred to the second hydraulic pipe rack 1-1, and then transferred to the power cat track 21. Finally, the power cat track 21 transfers the upper-coiled sleeve 4 to the drilling platform. Step 301, as follows Figure 10 As shown, after the sleeve 4 is fully engaged, the motor 13 is started. The motor 13 drives the roller 9 to rotate. Driven by the rotation of the roller 9, the sleeve 4 is conveyed from the sleeve engagement device 14 to the side near the clamping clamp 16, so that the sleeve 4 after engagement is completely put into the sleeve conveyor 5 on the side near the clamping clamp 16. Step 302, as follows Figure 5 As shown, simultaneously raise the first kick-out cylinder 18 and the second kick-out cylinder 19 so that the height of the kick-in rod 20 exceeds the height of the roller 9. At this point, keep the height of the first kick-out cylinder 18 unchanged and continue raising the second kick-out cylinder 19, causing the kick-in rod 20 to tilt towards the second hydraulic pipe rack 1-1, as shown. Figure 11 As shown, the sleeve 4 after being fastened rolls toward the side of the second hydraulic pipe rack 1-1 and eventually falls completely onto the second hydraulic pipe rack 1-1; Step 303, as follows Figure 12 As shown, keep the fourth lifting cylinder 1-1-2 stationary, raise the third lifting cylinder 1-1-1, so that the second hydraulic pipe rack 1-1 tilts towards the power cat track 21, and the upper-fastened casing 4 enters the drill string 22 of the power cat track 21. Step 304: Simultaneously raise the third lifting cylinder 23 and the fourth lifting cylinder 24, and start the pulley to allow the upper-locked casing 4 to enter the drilling platform.

Claims

1. An automatic root establishment system for ground casing, characterized in that, The system includes several first hydraulic pipe racks (1), each first hydraulic pipe rack (1) having a first lifting cylinder (2) at one end and a second lifting cylinder (3) at the other end. Each first hydraulic pipe rack (1) has a pin fixed to the top of the first lifting cylinder (2). Each first hydraulic pipe rack (1) has a sleeve conveyor (5) on the side near the first lifting cylinder (2). Each first hydraulic pipe rack (1) corresponds to multiple sleeve conveyors (5). A sleeve fastener (14) is provided between the multiple sleeve conveyors (5). Each sleeve conveyor (5) has several second hydraulic pipe racks (1-1) on the side away from the first hydraulic pipe rack (1). The column spacing of each second hydraulic pipe rack (1-1) is greater than the column spacing of the first hydraulic pipe rack (1). A power catwalk (21) is provided on the other side of each second hydraulic pipe rack (1-1).

2. The automatic root establishment system for ground casing according to claim 1, characterized in that, The second hydraulic pipe rack (1-1) is provided with a third lifting cylinder (1-1-1) at one end and a fourth lifting cylinder (1-1-2) at the other end. The third lifting cylinder (1-1-1) is located near the first hydraulic pipe rack (1).

3. The automatic root establishment system for ground casing according to claim 1, characterized in that, The casing conveyor (5) includes a first kick-in cylinder (6), and a second kick-in cylinder (7) is also provided on the side of the first kick-in cylinder (6) near the second hydraulic pipe rack (1-1). The first kick-in cylinder (6) and the second kick-in cylinder (7) are jointly fixedly connected to a kick-in rod (8). The end of the kick-in rod (8) is located between the columns of the first hydraulic pipe rack (1), and a first stop pin (10) is fixedly connected to the top of the kick-in rod (8) near the end of the second kick-in cylinder (7).

4. The automatic root establishment system for ground casing according to claim 3, characterized in that, The casing conveyor (5) further includes a first lifting cylinder (11) and a second lifting cylinder (12) located on one side of the kick rod (8). The first lifting cylinder (11) and the second lifting cylinder (12) are fixedly connected to a roller (9). A motor (13) is provided on one side of the roller (9). The first stop pin (10) and the second lifting cylinder (12) are located on the same horizontal line. The casing conveyor (5) further includes a first kick-out cylinder (18) on the side away from the first lifting cylinder (11) and the second lifting cylinder (12). A second kick-out cylinder (19) is also provided on the side of the first kick-out cylinder (18) near the second hydraulic pipe rack (1-1). The first kick-out cylinder (18) and the second kick-out cylinder (19) are jointly fixedly connected to a kick-out rod (20). A second stop pin (27) is fixedly connected to the top of the kick-out rod (20) near the end of the second kick-out cylinder (19).

5. The automatic root establishment system for ground casing according to claim 1, characterized in that, Several of the aforementioned sleeve fasteners (14) include a screw fastener (15), one side of which is provided with a push cylinder (17), and the other side of which is provided with a clamping clamp (16).

6. The automatic root establishment system for ground casing according to claim 1, characterized in that, The power catwalk (21) includes a third lifting cylinder (23), which is located at one end of the power catwalk (21) and is hinged to a first bracket (25). The first bracket (25) is a curved arm. The third lifting cylinder (23) is hinged to the upper part of the first bracket (25). The other end of the power catwalk (21) is hinged to a fourth lifting cylinder (24). The fourth lifting cylinder (24) is also hinged to a second bracket (26). The length of the first bracket (25) is greater than the length of the second bracket (26). A drill string (22) is hinged between the first bracket (25) and the second bracket (26). A pulley is provided on the drill string (22).

7. An automatic root establishment method for ground casing, employing the automatic root establishment system for ground casing as described in any one of claims 1-6, characterized in that, The specific steps are as follows: Step 1: Place the sleeve (4) on the first hydraulic pipe rack (1), raise the first hydraulic pipe rack (1) so that the sleeve (4) enters the sleeve conveyor (5); Step 2: Start the pipe conveyor (5) to bring the sleeve (4) closer to the sleeve fastener (14) and fasten the sleeve (4); Step 3: The upper-coiled casing (4) is transferred to the second hydraulic pipe rack (1-1), and then transferred to the power cat track (21). Finally, the power cat track (21) transfers the upper-coiled casing (4) to the drilling platform.

8. The automatic root establishment method for ground casing according to claim 7, characterized in that, Step 1 specifically involves: Step 101: Place the sleeve (4) on the first hydraulic pipe rack (1), keep the first lifting cylinder (2) stationary and raise the second lifting cylinder (3) so that the first hydraulic pipe rack (1) tilts to the side of the first lifting cylinder (2) and the sleeve (4) rolls to the side of the first lifting cylinder (2) until it stops at the end of the first lifting cylinder (2) pin. Step 102: Keep the second kicking cylinder (7) stationary and raise the first kicking cylinder (6) so that the kicking rod (8) tilts toward the side of the second kicking cylinder (7), lift the sleeve (4) so ​​that it rolls toward the side of the second kicking cylinder (7) until it stops at the first stop pin (10), so that the sleeve (4) slides into the roller (9), lower the first kicking cylinder (6) to return to the initial state, so that the kicking rod (8) is in a horizontal state; Step 103: Simultaneously raise the first lifting cylinder (11) and the second lifting cylinder (12) and raise the sleeve (4) to the same height as the sleeve upper buckle (14). At the same time, start the motor (13). The motor (13) drives the roller (9) to rotate. The rotation of the roller (9) drives the sleeve (4) to move closer to the sleeve upper buckle (14).

9. The automatic root establishment method for ground casing according to claim 7, characterized in that, Step 2 specifically involves the sleeves (4) on both sides of the sleeve fastener (14) simultaneously moving towards the sleeve fastener (14), causing the twisting pliers (15) at one end of the sleeve fastener (14) to clamp one side of the sleeve (4), and the clamping pliers (16) to clamp the other side of the sleeve (4). At the same time, the push cylinder (17) is activated, and the push cylinder (17) pushes the twisting pliers (15) closer to the clamping pliers (16) until the sleeves (4) on both sides contact and fasten. At this time, the twisting pliers (15) begins to rotate and fasten the sleeves (4) on both sides. At the same time, the push cylinder (17) enters the floating mode and floats and follows the rotation of the twisting pliers (15) during the fastening process.

10. The automatic root establishment method for ground casing according to claim 7, characterized in that, Step 3 specifically involves: Step 301: After the sleeve (4) is fully engaged, start the motor (13). The motor (13) drives the roller (9) to rotate. Driven by the rotation of the roller (9), the sleeve (4) is conveyed from the sleeve engagement device 14 to the side near the clamping clamp (16), so that the sleeve (4) after being engaged is completely put into the sleeve conveyor (5) on the side near the clamping clamp (16). Step 302: Simultaneously raise the first kick-out cylinder (18) and the second kick-out cylinder (19) so that the height of the kick-in rod (20) exceeds the height of the roller (9). At this time, keep the height of the first kick-out cylinder (18) unchanged and continue to raise the second kick-out cylinder (19) so that the kick-in rod (20) tilts towards the second hydraulic pipe rack (1-1). The sleeve (4) after being fastened rolls towards the side of the second hydraulic pipe rack (1-1) and finally falls completely onto the second hydraulic pipe rack (1-1). Step 303: Keep the fourth lifting cylinder (1-1-2) stationary, raise the third lifting cylinder (1-1-1) to tilt the second hydraulic pipe rack (1-1) toward the power cat track (21) side, and the upper-fastened casing (4) enters the drill string (22) of the power cat track (21); Step 304: Simultaneously raise the third lifting cylinder (23) and the fourth lifting cylinder (24), and start the pulley to allow the upper-locked casing (4) to enter the drilling platform.

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