A multifunctional tower that can support the movement of an injection head and can replace tools, and its usage method

Abstract

The present invention relates to a multifunctional tower that can support the movement of an injection head and can replace tools, and a method for using the same, belonging to the technical field of oilfield equipment. The technical solution of the present invention is as follows: a support frame (5) is welded inside a top telescopic tower (1), the support frame being a rectangular frame structure welded from a plurality of square tubes (21) and a square tube with holes (20), the plurality of square tubes being welded into two symmetrically arranged side frames, the square tubes with holes being four, two in a group, the two groups of square tubes with holes being respectively arranged parallel to each other between the two side frames, a tool hanging assembly being provided between the two upper square tubes with holes, and a lubricant pipe fixing assembly being provided between the two lower square tubes with holes. The height of the telescopic tower of the present invention is adjustable and suitable for various environments; the tool hanging assembly and the lubricant pipe fixing assembly provided on the top telescopic tower can fix the tools and the lubricant pipe for tool replacement, thereby avoiding repeated lifting of the injection head and saving operation time and cost.

Description

Technical Field

[0001] The invention relates to a multifunctional tower frame capable of supporting the movement of an injection head and replacing tools and a use method thereof, belonging to the technical field of oilfield equipment. Background Art

[0002] Currently, when an injection head is needed in an oilfield, it is hoisted with lifting equipment and secured with a crane and guy wires. This method of securing the head poses a safety hazard. When a long tool connected to the injection head needs to be replaced during operation, the head must be hoisted with the lifting equipment, which is dangerous and inconvenient. If an injection head malfunctions and requires repair, the lifting equipment must be used to lower the head back to the surface for inspection. Summary of the Invention

[0003] The purpose of the present invention is to provide a multifunctional tower that can support the movement of the injection head and replace tools, and a method for using the same. The tower has a telescopic function and can be freely adjusted in height. While supporting the injection head, the injection head can be moved in four directions: front, back, left, and right. The top telescopic tower is provided with a tool suspension assembly and a blowout preventer fixing assembly to fix the tool and the blowout preventer for tool replacement. At the same time, it is equipped with a maintenance platform, so that maintenance can be carried out when the injection head fails, thereby solving the above-mentioned problems existing in the background technology.

[0004] The technical solution of the present invention is:

[0005] The tool holder is fixed with a plurality of holes, and the support frame is welded on the support frame, and the support frame is a rectangular frame structure welded by a plurality of square tubes and square tubes with holes. The plurality of square tubes are welded into two symmetrically arranged side frames. There are four square tubes with holes, two of which are in a group. The two groups of square tubes with holes are respectively arranged parallel up and down between the two side frames. A tool hanging assembly is provided between the two square tubes with holes on the top. The tool hanging assembly comprises a sliding bracket, a tool support seat, a split bearing and a split clamping device. There are two sliding brackets, and the two sliding brackets are respectively arranged in parallel between the two square tubes with holes on the top. The sliding bracket comprises a sleeve and a connecting pipe. There are two sleeves, and the two sleeves are symmetrically arranged at both ends of the connecting pipe. The two sleeves are respectively sleeved on the corresponding square tubes with holes. The sleeve is provided with an adjustment hole. The sleeve and the hole The square tubes are pinned together, one end of the tool support seat is arranged on the connecting tube one, and the other end is provided with a split bearing. The split clamping device is assembled in the split bearing, and the split clamping device of the two sliding brackets one is matched and connected to form a clamping mechanism for clamping the tool; a lubricant pipe fixing assembly is provided between the two perforated square tubes below, and the lubricant pipe fixing assembly includes a sliding bracket two and a lubricant pipe fixing seat, the number of sliding bracket two is two, and the two sliding brackets two are respectively arranged in parallel between the two perforated square tubes located below, and the sliding bracket two includes a sleeve two and a connecting tube two, the number of sleeve two is two, and the two sleeve twos are symmetrically arranged at both ends of the connecting tube two, and the two sleeve twos are respectively sleeved on the corresponding perforated square tubes, and the sleeve two is provided with an adjusting hole two, and the sleeve two and the perforated square tube are pinned together, and one end of the lubricant pipe fixing seat is arranged on the connecting tube two, and the other end is provided with a semicircular pipe hole. The lubricant pipe fixing seats on the two sliding brackets two are pinned, and the two semicircular pipe holes form a circular lubricant pipe fixing hole for fixing the lubricant.

[0006] The top of the top telescopic tower is provided with an injection head moving slide. The telescopic tower is a rectangular frame structure. Slides are provided on two parallel beams at the top of the telescopic tower. A cylinder ear plate is provided at the end of the slide. The injection head moving slide comprises an injection head slide, a connecting square tube, a slide rail and a cylinder fixed square tube. There are two cylinder fixed square tubes. Slide rails are provided at the bottom of the two cylinder fixed square tubes. The two cylinder fixed square tubes are respectively slidably set on the two slides at the top of the telescopic tower through the two slide rails. The end of the cylinder fixed square tube is provided with an opening matching the cylinder ear plate. The two cylinder fixed square tubes are connected by two parallel connecting square tubes to form a rectangular structure as a whole. Injection head slides are provided on the top of the two connecting square tubes, and the injection head is slidably set on the injection head slide.

[0007] The injection head movable slide is equipped with an oil cylinder, which matches the oil cylinder ear plate 1 on the slide. The action of the oil cylinder drives the injection head movable slide to move forward and backward. An injection head oil cylinder is provided at the bottom of the injection head. The injection head oil cylinder matches the oil cylinder ear plate 2 on the injection head slide. The action of the injection head oil cylinder drives the injection head to move left and right along the injection head slide, completing the movement of the injection head in four directions: front, back, left and right.

[0008] The size of the telescopic tower increases from top to bottom. Between two adjacent telescopic towers, the telescopic tower located on the upper layer can be moved downward into the telescopic tower located on the lower layer, thereby adjusting the height of the multifunctional tower.

[0009] The telescopic tower at the bottom is a base telescopic tower. The base telescopic tower is a rectangular frame structure. Anchor fixing frames are provided on the outside of the four corners of the bottom end of the base telescopic tower for fixing the multifunctional tower.

[0010] Ladders are provided on the multiple layers of the telescopic towers, and multiple ladders match each other from top to bottom to form an inspection channel, through which maintenance personnel can enter the top telescopic tower to inspect the injection head.

[0011] A maintenance step guardrail is provided on the outside of the telescopic tower, and the maintenance step guardrail is located on both sides of the ladder to facilitate maintenance by staff.

[0012] A maintenance pedal is provided at the bottom of the top telescopic tower, with an opening in the middle. The periphery of the maintenance pedal is welded to the crossbeam at the bottom of the telescopic tower, and the support frame is welded to the maintenance pedal and is located above the middle opening.

[0013] The lower outer sides of the four columns of the telescopic tower are each provided with a sleeve, and the sleeve is provided with a plurality of pin holes (1) arranged sequentially from top to bottom. Adjustment columns are provided next to the four columns of the telescopic tower, and the adjustment columns are provided with a plurality of pin holes (2) arranged sequentially from top to bottom. Between two adjacent telescopic towers, the sleeve of the upper telescopic tower is sleeved on the adjustment column of the lower telescopic tower and connected by a locating pin. When the height of the multifunctional tower needs to be adjusted, the upper telescopic tower is moved up or down to the appropriate position, the pin hole (1) on the sleeve is aligned with the pin hole (2) on the adjustment column, and the locating pin is inserted for positioning to complete the height adjustment.

[0014] The split bearing is fixed to the tool support seat by bolt connection, and the split clamping device is fixed to the split bearing by bolt connection. After the two split clamping devices clamp the tool, they are fixed together by bolts. After being fixed together by bolts, they can rotate through the split bearing.

[0015] Guy rope lugs are provided on the outer sides of the upper ends of the four uprights of the top telescopic tower for installing guy ropes.

[0016] A method for using a multifunctional tower that can support the movement of an injection head and replace tools, the steps are as follows:

[0017] ①Installation tools:

[0018] The coiled tubing is connected to the tool through threads, and the tool and coiled tubing enter the wellhead through the lubricant preventer. Under the operation state, first install the telescopic towers on each layer, place the injection head on the injection head moving slide, and move the injection head to the edge of the top telescopic tower through the oil cylinder. Use the lifting equipment to put the lubricant preventer in the middle of the tower, fix the lubricant preventer through the lubricant preventer fixing assembly, and then use the lifting equipment to lift the tool to the middle position of the side nozzle. Hold the tool tightly through the tool hanging assembly, and move the injection head from the edge of the top telescopic tower to the middle position through the oil cylinder. Let the coiled tubing enter from the injection head. When it reaches the upper end of the tool, rotate the tool hanging assembly to connect the coiled tubing to the tool. After the connection, separate the tool hanging assembly and the lubricant preventer fixing assembly, and then the operation can be carried out.

[0019] ②Replace tools

[0020] When the tool needs to be replaced, first fix the lubricator with the lubricator fixing assembly, lift the tool head out of the lubricator, clamp the tool head with the tool hanging assembly, separate the tool from the coiled tubing by rotating the tool hanging assembly, then move the injection head to the edge of the tower, lift the tool away with the lifting equipment, and replace the new tool. The steps for replacing the new tool are the same as step ①.

[0021] The positive effects of the present invention are as follows: the tower has good load-bearing capacity, the injection head is relatively stable when placed on it for operation, and the risk of lifting operation is reduced; the height of the telescopic tower can be adjusted to suit various environments; the tool hanging assembly and the lubricant pipe fixing assembly are set on the top telescopic tower to fix the tools and the lubricant pipe for tool replacement, avoiding repeated lifting of the injection head and saving operation time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the top telescopic tower structure according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the movable slide of the injection head according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of a tool suspension assembly according to an embodiment of the present invention;

[0026] Figure 5 Schematic diagram of a lubricator fixing assembly according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of a support frame according to an embodiment of the present invention;

[0028] In the figure: telescopic tower 1, column 101, adjustment column 102, pin hole 2 103, maintenance pedal guardrail 2, anchor bracket 3, base telescopic tower 4, support frame 5, cylinder ear plate 1 6, sleeve 7, pin hole 1 701, slide 8, ladder 9, guy rope ear plate 10, maintenance pedal 11, injection head slide 12, slide rail 13, cylinder fixed square tube 14, sliding bracket 15, sleeve 151, connecting pipe 152, adjustment hole 153, tool support seat 16, split bearing 17, split clamping device 18, blowout preventer fixing seat 19, blowout preventer fixing hole 191, square tube with hole 20, square tube 21, sliding bracket 2 22, sleeve 221, connecting pipe 2 222, adjustment hole 223, connecting square tube 23, cylinder ear plate 2 24. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0030] A multifunctional tower that can support the movement of the injection head and can replace tools, comprising a multi-layer telescopic tower 1 arranged in sequence from top to bottom, the height between the telescopic towers 1 on each layer is adjustable; a support frame 5 is welded inside the top telescopic tower 1, and the support frame 5 is a rectangular frame structure welded by multiple square tubes 21 and perforated square tubes 20, and multiple square tubes 21 are welded into two symmetrically arranged side frames, and there are four perforated square tubes 20, two in a group, and the two groups of perforated square tubes 20 are respectively arranged in parallel between the two side frames, and a tool hanging assembly is provided between the two perforated square tubes on the top. The tool support seat 16 includes a sliding bracket 15, a split bearing 17 and a clamping device 18. The number of sliding brackets 15 is two. The two sliding brackets 15 are respectively arranged in parallel between the two perforated square tubes located above. The sliding bracket 15 includes a sleeve 151 and a connecting tube 152. The number of sleeves 151 is two. The two sleeves 151 are symmetrically arranged at both ends of the connecting tube 152. The two sleeves 151 are respectively sleeved on the corresponding perforated square tube 20. The sleeve 151 is provided with an adjustment hole 153. The sleeve 151 and the perforated square tube 20 are pinned together. Then, one end of the tool support seat 16 is set on the connecting pipe 152, and the other end is provided with a split bearing 17. The split holding device 18 is assembled in the split bearing 17. The split holding devices 18 of the two sliding brackets 15 are matched and connected to form a holding mechanism for holding the tool; a lubricator fixing assembly is provided between the two perforated square tubes below, and the lubricator fixing assembly includes a sliding bracket 22 and a lubricator fixing seat 19. The number of sliding brackets 22 is two, and the two sliding brackets 22 are respectively arranged in parallel between the two perforated square tubes below. The sliding bracket 22 includes a sleeve Tube 221 and connecting pipe 222, there are two sleeves 221, and the two sleeves 221 are symmetrically arranged at both ends of the connecting pipe 222. The two sleeves 221 are respectively sleeved on the corresponding square tube 20 with holes. The sleeve 221 is provided with an adjustment hole 223. The sleeve 221 and the square tube 20 with holes are pinned together. One end of the lubricant pipe fixing seat 19 is provided on the connecting pipe 222, and the other end is provided with a semicircular pipe hole. The lubricant pipe fixing seats 19 on the two sliding brackets 22 are pinned, and the two semicircular pipe holes form a circular lubricant pipe fixing hole 191 for fixing the lubricant pipe.

[0031] The top of the top telescopic tower 1 is provided with an injection head moving slide. The telescopic tower 1 is a rectangular frame structure. Two parallel beams at the top of the telescopic tower 1 are provided with slides 8. The end of the slide 8 is provided with a cylinder ear plate 6. The injection head moving slide comprises an injection head slide 12, a connecting square tube 23, a slide rail 13 and a cylinder fixed square tube 14. There are two cylinder fixed square tubes 14. The bottoms of the two cylinder fixed square tubes 14 are provided with slide rails 13. The two cylinder fixed square tubes 14 are respectively slidably arranged on the two slides 8 at the top of the telescopic tower 1 through two slide rails 13. The ends of the cylinder fixed square tubes 14 are provided with There is an opening that matches the cylinder ear plate 6, the cylinder is fixed in the cylinder fixed square tube, the piston rod of the cylinder is connected to the cylinder ear plate 1 at the end of the slide, and the action of the cylinder drives the injection head moving slide to slide on the slide 8; the two cylinder fixed square tubes 14 are connected by two parallel connecting square tubes 23, and the whole forms a rectangular structure. The top of the two connecting square tubes 23 is provided with an injection head slide 12, and the end of the injection head slide 12 is provided with an injection head cylinder ear plate 1, the piston rod of the injection head cylinder is connected to the injection head cylinder ear plate 1, and the action of the injection head cylinder drives the injection head to slide on the injection head slide 12.

[0032] The size of the telescopic tower 1 increases from top to bottom. Between two adjacent layers of telescopic towers 1, the telescopic tower 1 located on the upper side can be moved downward into the telescopic tower 1 located on the lower side, thereby adjusting the height of the multifunctional tower.

[0033] The telescopic tower at the bottom is the base telescopic tower 4, which is a rectangular frame structure. Anchor fixing frames 3 are provided on the outside of the four corners of the bottom end of the base telescopic tower 4 for fixing the multifunctional tower.

[0034] Ladders 9 are provided on each of the multiple layers of the telescopic tower 1. The multiple ladders 9 match each other from top to bottom to form an inspection passage, through which maintenance personnel can enter the top telescopic tower to inspect the injection head.

[0035] A maintenance step guardrail 2 is provided on the outside of the telescopic tower 1. The maintenance step guardrail 2 is located on both sides of the ladder 9 to facilitate maintenance by the staff.

[0036] A maintenance pedal 11 is provided at the bottom of the top telescopic tower 1, and the inspector can stand on the maintenance pedal 11 to operate. The maintenance pedal 11 has an opening in the middle, and the outer periphery of the maintenance pedal 11 is welded to the bottom cross beam of the telescopic tower 4. The support frame 5 is welded to the maintenance pedal 11 and is located above the middle opening. Tools, lubricant preventers, oil pipes and other components extend downward from the middle opening to the inside of the tower.

[0037] Each of the four columns 101 of the telescopic tower 1 is provided with a sleeve 7 on the outer side of the lower end. The sleeve 7 is provided with a plurality of pin holes 701 arranged sequentially from top to bottom. An adjustment column 102 is provided next to the four columns 101 of the telescopic tower 1. The adjustment column 102 is provided with a plurality of pin holes 103 arranged sequentially from top to bottom. Between two adjacent telescopic towers 1, the sleeve 7 of the upper telescopic tower 1 is sleeved on the adjustment column 102 of the lower telescopic tower 1 and connected by a locating pin. When the height of the multifunctional tower needs to be adjusted, the upper telescopic tower 1 is moved up and down to the appropriate position, the pin holes 701 on the sleeve 7 are aligned with the pin holes 103 on the adjustment column 102, and the locating pin is inserted to complete the positioning and complete the height adjustment.

[0038] The split bearing 17 is fixed to the tool support seat 16 by bolt connection, and the split clamping device 18 is fixed to the split bearing by bolt connection. After the two split clamping devices 18 clamp the tool, they are fixed together by bolts. At this time, the clamped tool is located in the clamping mechanism (the two split clamping devices constitute the clamping mechanism), and the two split bearings are bolted to form a complete bearing, and the tool and the clamping mechanism can be rotated through the split bearing.

[0039] Guy rope lugs 10 are provided on the outer sides of the upper ends of the four uprights of the top telescopic tower 1 for installing guy ropes.

[0040] A method for using a multifunctional tower that can support the movement of an injection head and replace tools, the steps are as follows:

[0041] ①Installation tools:

[0042] The coiled tubing is connected to the tool through threads, and the tool and coiled tubing enter the wellhead through the lubricant preventer. Under the operation state, first install the telescopic towers on each layer, place the injection head on the injection head moving slide, and move the injection head to the edge of the top telescopic tower through the oil cylinder. Use the lifting equipment to put the lubricant preventer in the middle of the tower, fix the lubricant preventer through the lubricant preventer fixing assembly, and then use the lifting equipment to lift the tool to the middle position of the side nozzle. Hold the tool tightly through the tool hanging assembly, and move the injection head from the edge of the top telescopic tower to the middle position through the oil cylinder. Let the coiled tubing enter from the injection head. When it reaches the upper end of the tool, rotate the tool hanging assembly to connect the coiled tubing to the tool. After the connection, separate the tool hanging assembly and the lubricant preventer fixing assembly, and then the operation can be carried out.

[0043] ②Replace tools

[0044] When the tool needs to be replaced, first fix the lubricator with the lubricator fixing assembly, lift the tool head out of the lubricator, clamp the tool head with the tool hanging assembly, separate the tool from the coiled tubing by rotating the tool hanging assembly, then move the injection head to the edge of the tower, lift the tool away with the lifting equipment, and replace the new tool. The steps for replacing the new tool are the same as step ①.

[0045] During operation, the tool suspension assembly and the lubricator fixing assembly are in a split state. The two sliding brackets 15 and the tool support seat 16, the split bearing 17 and the split clamping device 18 thereon are respectively located on the left and right sides of the support frame. Similarly, the two sliding brackets 22 and the lubricator fixing seat 19 thereon are also respectively located on the left and right sides of the support frame.

[0046] Because the lubricator must be stabilized and prevented from shaking when changing tools, the two sliding brackets 22 are first moved. The lubricator fixing bases 19 on the two sliding brackets 22 are then clamped tightly against the lubricator and secured with bolts or pins to prevent shaking. Simultaneously, the sleeve 221 of the sliding bracket 22 is secured to the lower perforated square tube via a latch. The tool suspension assembly is rotated to separate the tool from the coiled tubing. The two sliding brackets 15 are then moved. The split clamping devices 18 on the two sliding brackets 15 are then clamped tightly against the tool and secured with bolts or pins. Simultaneously, the sleeve 151 of the sliding bracket 15 is secured to the upper perforated square tube via a latch.

[0047] After the tool hanging assembly and the lubricant pipe fixing assembly have fixed the tool and the lubricant pipe, move the injection head to the edge of the top telescopic tower, connect the hook of the lifting equipment to the tool that needs to be replaced, use the lifting equipment to lift out the tool in the lubricant pipe that needs to be replaced, and then use the lifting equipment to lift the new tool into the lubricant pipe, move the two sliding brackets 15, and the split clamping devices 18 on the two sliding brackets 15 clamp the new tool and then fix it with bolts or pins. Rotate the tool hanging assembly to connect the tool to the continuous oil pipe to complete the tool update. Finally, separate the two split clamping devices 18 and the two lubricant pipe fixing seats 19 respectively, and then move the two sliding brackets 15 and the split clamping devices 18 as well as the two sliding brackets 22 and the lubricant pipe fixing seat 19 to the left and right sides of the support frame.

[0048] Combined with attachment Figure 1 In this embodiment, the upper telescopic tower 1 is connected to the base telescopic tower 4 by a fixing pin, the maintenance step guardrail 2 is connected to the upper telescopic tower 1 and the base telescopic tower 4 by a pin, and the anchor fixing frame 3 is connected to the base telescopic tower 4 by a pin. When working, the tower is raised, and different height adjustments are achieved by cooperating with different pin holes 1 and pin holes 2 on the adjustment column 102.

[0049] Combined with attachment Figure 2 In this embodiment, the support frame 5, the cylinder ear plate 6, the sleeve 7, the slide 8, the ladder 9, the guy wire ear plate 10, and the maintenance pedal 11 in the top telescopic tower are all welded to the telescopic tower 1.

[0050] Combined with attachment Figure 3 In this embodiment, the injection head slide 12, the slide rail 13, and the oil cylinder fixed square tube 14 are all welded together, and the slide rail 13 is connected to the slide 8 by sliding.

[0051] Combined with attachment Figure 4 In this embodiment, the sleeve of the sliding bracket 15 is inserted into the upper perforated square tube 20 of the support frame 5. One end of the tool support seat 16 is inserted into the connecting tube 1 of the sliding bracket 15, and the other end is arranged opposite and equipped with a split bearing 17. The split bearing 17 is connected to the tool support seat 16 by bolts, and the split clamping device 18 is also bolted to the split bearing 17. The split bearings 1 on the two sliding brackets 15 are connected to form a complete bearing, and the split clamping devices 18 are connected to form a clamping mechanism.

[0052] Combined with attachment Figure 5 In this embodiment, the second sleeve of the sliding bracket 22 is sleeved on the lower perforated square tube 20 of the support frame 5, and the lubricator fixing seat 19 is sleeved on the second connecting pipe 222 of the sliding bracket 22. After the two lubricator fixing seats 19 are connected, a lubricator fixing hole 191 is formed in the middle.

[0053] Combined with attachment Figure 6 In this embodiment, the perforated square tube 20 and the ordinary square tube 21 are welded to form the support frame 5.

Claims

1. A multifunctional tower that can support the movement of an injection head and replace tools, characterized by: The invention comprises a multi-layer telescopic tower (1) arranged in sequence from top to bottom, wherein the height between each layer of the telescopic tower (1) is adjustable, and the size of the telescopic tower (1) increases in sequence from top to bottom; a support frame (5) is welded inside the top telescopic tower (1), and the support frame (5) is a rectangular frame structure welded by a plurality of square tubes (21) and a square tube with holes (20), wherein the plurality of square tubes (21) are welded into two symmetrically arranged side frames, wherein the square tubes with holes (20) are four, and two of them form a group, and the two groups of square tubes with holes (20) are respectively arranged in parallel between the two side frames, and a tool hanging assembly is arranged between the two square tubes with holes located above, and the tool hanging assembly comprises a sliding bracket (15) , tool support seat (16), split bearing (17) and split clamping device (18), the number of sliding brackets (15) is two, the two sliding brackets (15) are respectively arranged in parallel between the two square tubes with holes located above, the sliding bracket (15) includes a sleeve (151) and a connecting tube (152), the number of sleeves (151) is two, the two sleeves (151) are symmetrically arranged at both ends of the connecting tube (152), the two sleeves (151) are respectively sleeved on the corresponding square tubes with holes (20), the sleeve (151) is provided with an adjustment hole (153), the sleeve (151) and the square tube (20) with holes are pinned together. One end of the tool support seat (16) is arranged on the connecting pipe (152), and the other end is provided with a split bearing (17). The split holding device (18) is assembled in the split bearing (17). The split holding devices (18) of the two sliding brackets (15) are matched and connected to form a holding mechanism for holding the tool; a blowout preventer fixing assembly is provided between the two square tubes with holes at the bottom, and the blowout preventer fixing assembly includes a sliding bracket (22) and a blowout preventer fixing seat (19). The number of the sliding brackets (22) is two, and the two sliding brackets (22) are respectively arranged in parallel between the two square tubes with holes at the bottom. The sliding bracket (22) includes a sleeve (22 1) and connecting pipe 2 (222), there are two sleeves 2 (221), the two sleeves 2 (221) are symmetrically arranged at both ends of connecting pipe 2 (222), the two sleeves 2 (221) are respectively sleeved on the corresponding square tube with holes (20), the sleeve 2 (221) is provided with an adjustment hole 2 (223), the sleeve 2 (221) and the square tube with holes (20) are pinned, one end of the blowout preventer fixing seat (19) is provided on connecting pipe 2 (222), and the other end is provided with a semicircular tube hole, the blowout preventer fixing seats (19) on the two sliding brackets 2 (22) are pinned, and the two semicircular tube holes form a circular blowout preventer fixing hole (191) for fixing the blowout preventer.

2. A multifunctional tower capable of supporting the movement of an injection head and replacing tools according to claim 1, characterized in that: The top of the top telescopic tower (1) is provided with an injection head moving slide. The telescopic tower (1) is a rectangular frame structure. Two parallel beams at the top of the telescopic tower (1) are provided with slides (8). The end of the slide (8) is provided with a cylinder ear plate (6). The injection head moving slide comprises an injection head slide (12), a connecting square tube (23), a slide rail (13) and an oil cylinder fixed square tube (14). There are two oil cylinder fixed square tubes (14). The bottoms of the two oil cylinder fixed square tubes (14) are provided with slide rails (13). The two oil cylinder fixed square tubes ( 14) are respectively slidably arranged on two slides (8) at the top of the telescopic tower (1) through two slide rails (13), and the end of the oil cylinder fixed square tube (14) is provided with an opening matching the oil cylinder ear plate 1 (6); the two oil cylinder fixed square tubes (14) are connected by two parallel connecting square tubes (23), and the whole forms a rectangular structure, and the top of the two connecting square tubes (23) are provided with an injection head slide (12), and the injection head slide (12) is provided with an oil cylinder ear plate 2 (24), and the injection head is slidably arranged on the injection head slide (12).

3. A multifunctional tower capable of supporting the movement of an injection head and replacing tools according to claim 1 or 2, characterized in that: The telescopic tower at the bottom is a base telescopic tower (4), and the outer sides of the four corners of the bottom end of the base telescopic tower (4) are provided with anchor fixing frames (3).

4. A multifunctional tower capable of supporting the movement of an injection head and replacing tools according to claim 1 or 2, characterized in that: Ladders (9) are provided on each of the multiple layers of the telescopic tower (1), and the multiple ladders (9) match each other from top to bottom.

5. The multifunctional tower capable of supporting the movement of the injection head and replacing tools according to claim 4, characterized in that: A maintenance pedal guardrail (2) is provided on the outside of the telescopic tower (1), and the maintenance pedal guardrail (2) is located on both sides of the ladder (9).

6. A multifunctional tower capable of supporting the movement of an injection head and replacing tools according to claim 1 or 2, characterized in that: A maintenance pedal (11) is provided at the bottom of the top telescopic tower (1), the maintenance pedal (11) has an opening in the middle, the periphery of the maintenance pedal (11) is welded to the bottom crossbeam of the telescopic tower (4), and the support frame (5) is welded to the maintenance pedal (11) and is located above the middle opening.

7. The multifunctional tower capable of supporting the movement of the injection head and replacing tools according to claim 1, characterized in that: The outer sides of the lower ends of the four columns (101) of the telescopic tower (1) are all provided with sleeves (7), and a plurality of pin holes (701) are provided on the sleeves (7) arranged in sequence from top to bottom. An adjustment column (102) is provided next to the four columns (101) of the telescopic tower (1), and a plurality of pin holes (103) are provided on the adjustment column (102) arranged in sequence from top to bottom. Between two upper and lower adjacent telescopic towers (1), the sleeve (7) of the upper telescopic tower (1) is sleeved on the adjustment column (102) of the lower telescopic tower (1) and connected by a positioning pin.

8. A multifunctional tower capable of supporting the movement of an injection head and replacing tools according to claim 1 or 2, characterized in that: The split bearing (17) is fixed to the tool support seat (16) by bolt connection, and the split clamping device (18) is fixed to the split bearing by bolt connection. After the two split clamping devices (18) clamp the tool, they are fixed together by bolts and can be rotated through the split bearing (17).

9. A method for using a multifunctional tower capable of supporting the movement of an injection head and replacing tools according to any one of claims 1 to 8, characterized in that The steps are as follows: ①Installation tools: The coiled tubing is connected to the tool through threads, and the tool and the coiled tubing enter the wellhead through the lubricant preventer. Under the operation state, first install the telescopic towers on each layer, adjust the overall height of the tower according to the operation environment, place the injection head on the injection head moving slide, and move the injection head to the edge of the top telescopic tower through the oil cylinder. Use the lifting equipment to put the lubricant preventer in the middle of the tower, fix the lubricant preventer through the lubricant preventer fixing assembly, and then use the lifting equipment to lift the tool to the middle position of the side nozzle. Hold the tool tightly through the tool hanging assembly, and move the injection head from the edge of the top telescopic tower to the middle position through the oil cylinder, allowing the coiled tubing to enter from the injection head. When it reaches the upper end of the tool, rotate the tool hanging assembly to connect the coiled tubing to the tool. After the connection, separate the tool hanging assembly and the lubricant preventer fixing assembly, and then the operation can be carried out. ②Replace tools When the tool needs to be replaced, first fix the lubricator with the lubricator fixing assembly, lift the tool head out of the lubricator, clamp the tool head with the tool hanging assembly, separate the tool from the coiled tubing by rotating the tool hanging assembly, then move the injection head to the edge of the tower, lift the tool away with the lifting equipment, and replace the new tool. The steps for replacing the new tool are the same as step ①.

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