A combined casing shaping tool with detachable cutter

Abstract

The invention discloses a combined casing shaping tool with detachable cutters. The design of the tool is intended to improve the efficiency and reliability of the repair work of the damaged casing in the oil and gas field. The tool is mainly composed of an extrusion shaping part, a milling shaping part, a straightening part, a hydraulic part, and a hydraulic anchor. Among them, the shaping head in the extrusion shaping part is connected to the hydraulic piston inside the device through a thread. The shaping head moves axially under the action of the internal pressure to extrude and shape the deformed part of the casing, thereby increasing the shaping force. Afterwards, a detachable annular milling cutter connected to the outside of the milling cylinder by bolts is used to perform preliminary milling on the casing after the extrusion shaping head passes through. A detachable rectangular milling cutter connected to the outside of the milling cylinder by a pin shaft can perform more detailed milling on the casing, thereby realizing the shaping of the deformed casing, reducing the number of times of replacing different shaping tools during drilling, and facilitating the replacement of the milling cutter after wear, thereby improving the efficiency of casing shaping work in the oil and gas field.

Description

Technical Field

[0001] The invention belongs to the technical field of well repair tools in the petroleum industry, and in particular relates to a combined casing shaping tool combining "extrusion" and "milling". Background Art

[0002] During the production operation of oil and gas fields, downhole casing may be deformed and damaged to varying degrees due to engineering or geological reasons, seriously affecting the normal production of oil and gas fields. In recent years, due to the rapid development of the oil industry, some old wells and damaged wells that have been shut down due to casing deformation due to technical reasons are in urgent need of efficient well repair tools to restore normal production. Therefore, the demand for using casing shaping tools to repair the above-mentioned casing damaged wells is also increasing.

[0003] At present, the research on shaping methods of casing shaping tools is mainly divided into three types: mechanical shaping, explosive shaping, and milling shaping. For example, Chinese invention patent CN118187731A discloses a high-efficiency diameter expansion milling straightening integrated tool, which adopts the milling shaping principle and a mechanical diameter expansion milling straightening method powered by a hydraulic system, and has a retractable tool function; Chinese utility model patent CN217897806U discloses a high-efficiency hydraulic shaper for repairing casing deformation wells, which adopts the mechanical shaping principle and solves the problems of casing damage and casing rebound after repair existing in casing shaping tools; Chinese invention patent CN113047799B discloses an explosive casing shaping tool, which provides an explosive casing shaping tool that can be lowered once and shaped at multiple points; however, most of the current casing shaping tools adopt a single one of the above three methods, and they all have their own obvious disadvantages. In the actual shaping process, it is difficult to complete the shaping in one time, the cost of replacing the shaping tool after it is worn is high, and even more serious casing damage may occur due to shaping failure. Therefore, in the casing shaping work, there is an urgent need for an efficient shaping tool that combines multiple shaping methods and is easy to maintain. Summary of the invention

[0004] The purpose of the present invention is to provide a combined casing shaping tool with detachable cutters, which solves the problems of single shaping mode, low shaping success rate and high replacement cost of the traditional casing shaping tools after the cutters are worn.

[0005] To achieve the above objectives, the present invention provides a combined casing shaping tool that combines "extrusion" and "grinding", and the grinding and milling tools are easy to replace, including an extrusion shaping part, a grinding and milling shaping part, a hydraulic part, a straightening part, and a hydraulic anchor.

[0006] The extrusion shaping part structure comprises a shaping head, the outer surface of which is inlaid with shaping steel balls and the interior of which is processed with internal threads.

[0007] Preferably, the shaping steel balls are evenly distributed in four groups along the circumferential direction, and each group extends in an axial spiral.

[0008] The milling shaping part structure includes an annular milling tool, an annular milling tool connecting bolt, a rectangular milling tool, a pin shaft, and a milling cylinder. A piston channel is provided inside the milling cylinder, an internal thread is provided on the upper part, and threaded holes are distributed circumferentially on the lower outer surface. Rectangular milling tool grooves are evenly distributed circumferentially on the upper part of the milling cylinder for placing the rectangular milling tool, and through holes are provided on both side surfaces of the rectangular milling tool groove and the side surfaces of the rectangular milling tool.

[0009] Preferably, the annular milling cutter is fixed to the outer surface of the milling cylinder using the annular milling cutter connecting bolts, so as to facilitate the replacement of the annular milling cutter after it is worn.

[0010] Preferably, the annular milling tool is in the shape of a thin-walled cylinder and has a step hole on its side along the circumferential direction, which is used to connect the annular milling tool to the outer surface of the milling cylinder with bolts; the outer surface of the annular milling tool has milling blades evenly distributed along the circumferential direction and extends spirally along the axial direction.

[0011] Preferably, the rectangular milling tool is fixed in the rectangular milling tool slot by using the pin shaft, so as to facilitate the replacement of the rectangular milling tool after it is worn.

[0012] Preferably, the rectangular milling tool body is in the form of a cuboid, a milling blade is provided on its upper surface, and a through hole is opened on its side for the pin to pass through.

[0013] The structure of the righting part includes: a righting shell, a righting block, a shock-absorbing leaf spring, a righting shell connecting bolts, a righting ball, a righting ball baffle, and a righting ball baffle bolt. The righting shell is in the shape of a quarter cylinder, and its two side surfaces are provided with through holes and deep grooves for placing the righting block and the shock-absorbing leaf spring. The shock-absorbing leaf spring is placed between the righting block and the righting shell, and can play a certain shock-absorbing role in the righting process.

[0014] Preferably, the shock-absorbing leaf spring can be assembled by overlapping a plurality of shock-absorbing leaf springs to enhance the shock-absorbing effect.

[0015] Preferably, the centralizing housing connecting bolts can connect a plurality of centralizing housings through through holes on both sides of the centralizing housing, and the centralizing blocks and the damping leaf springs are placed between two adjacent centralizing housings.

[0016] Preferably, a circular groove is provided on the outer surface of the straightening block for accommodating the straightening ball.

[0017] Preferably, the righting ball baffle is fixed to the righting block by the righting ball baffle bolts, and the righting ball is fixed in the circular groove of the righting block baffle.

[0018] The hydraulic part structure includes a hydraulic piston, a piston spring, and a hydraulic cylinder body; the two ends of the hydraulic cylinder body are processed with tapered threads, which are easy to transmit torque and have good sealing performance. The side of the hydraulic cylinder body is evenly distributed with air holes along the circumference, and a step surface is processed inside for placing the piston spring.

[0019] Preferably, the hydraulic piston is in the shape of a stepped shaft, an external thread is provided at the shaft end thereof, and is threadedly connected to the shaping head, and a through flow channel is processed inside the hydraulic piston.

[0020] Preferably, the piston spring is placed between the two step surfaces of the hydraulic cylinder body and the hydraulic piston, which serves to limit the piston spring.

[0021] The hydraulic anchor is connected to the upper part of the hydraulic part through threads, and plays an anchoring role for the entire tool during the shaping process.

[0022] Preferably, the hydraulic anchor has 18 anchor claws distributed along the circumference, which greatly increases the anchoring force and can play a certain righting role under low pressure.

[0023] Therefore, the present invention can realize continuous and efficient shaping of deformed casing, effectively solving the drawbacks of single shaping method, low shaping success rate and high replacement cost after tool wear of previous shaping tools, thereby improving the efficiency of casing repair work in oil and gas fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axonometric 1 / 4 cross-sectional view of a combined casing shaping tool with a detachable cutter according to the present invention;

[0025] Figure 2 It is a schematic diagram of the shaping head of the present invention;

[0026] Figure 3 Schematic diagram of the annular milling tool of the present invention;

[0027] Figure 4 It is a schematic diagram of a rectangular milling tool of the present invention;

[0028] Figure 5 It is a schematic diagram of the righting shell of the present invention;

[0029] Figure 6 It is a schematic diagram of the straightening block of the present invention;

[0030] Figure 7 This is a schematic diagram of the righting ball baffle of the present invention;

[0031] Figure 8 It is a schematic diagram of the shock absorbing leaf spring of the present invention;

[0032] Fig. 9It is a schematic diagram of the milling cylinder of the present invention;

[0033] Fig.10 It is a schematic diagram of the hydraulic cylinder body of the present invention;

[0034] Fig.11 It is a schematic diagram of the hydraulic piston of the present invention;

[0035] Fig.12 It is a schematic diagram of the main body of the hydraulic anchor of the present invention;

[0036] Fig.13 This is a schematic diagram of a hydraulic anchor baffle of the present invention;

[0037] Fig.14 It is a schematic diagram of the anchor claw of the present invention.

[0038] Figure numerals: 1-shaping head; 2-shaping steel ball; 3-milling cylinder sealing ring; 4-annular milling tool; 5-annular milling tool connecting bolt; 6-rectangular milling tool; 7-pin shaft; 8-rightening housing connecting bolt; 9-rightening housing; 10-rightening block; 11-rightening ball baffle bolt; 12-rightening ball; 13-rightening ball baffle; 14-shock-absorbing leaf spring; 15-milling cylinder; 16-hydraulic cylinder; 17-piston spring; 18-hydraulic piston; 19-hydraulic piston sealing ring; 20-hydraulic Anchor body; 21-hydraulic anchor baffle bolt; 22-hydraulic anchor baffle; 23-external spring; 24-inner spring; 25-anchor claw; 26-anchor claw sealing ring; 27-shaping head thread; 28-water eye flow channel; 29-annular milling tool step hole; 30-annular milling blade; 31-annular milling tool inner wall; 32-chip groove; 33-rectangular milling blade; 34-rectangular milling tool fixing hole; 35-centering shell connection hole; 36-centering block fixing groove; 37-shock-absorbing leaf spring fixing step; 38-centering Inner wall of shell; 39-bolt hole of straightening block; 40-circular groove of straightening ball; 41-step of straightening block; 42-bolt hole of straightening ball baffle; 43-limiting hole of straightening ball; 44-bottom surface of damping leaf spring; 45-thread of milling cylinder; 46-small diameter section of milling cylinder; 47-rectangular milling tool groove; 48-pin fixing hole; 49-annular milling tool bolt hole; 50-sealing groove of milling cylinder; 51-piston channel; 52-thread of hydraulic cylinder body; 53-piston cavity; 54-air hole; 55-piston cavity step; 56 -external thread of hydraulic cylinder body; 57-process groove; 58-hydraulic piston sealing groove; 59-piston step surface; 60-piston flow channel; 61-piston internal thread; 62 piston external thread; 63-hydraulic anchor internal thread; 64-hydraulic anchor flow channel; 65-anchor claw groove; 66-hydraulic anchor baffle bolt hole; 67-hydraulic anchor external thread; 68-hydraulic anchor baffle groove; 69-hydraulic anchor baffle fixing hole; 70-anchor claw limiting surface; 71-anchor claw tooth; 72-anchor claw spring groove; 73-anchor claw inner wall; 74-anchor claw sealing groove. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail in conjunction with the embodiments below; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention; the application principle of the present invention is further described in conjunction with the drawings and specific embodiments below.

[0040] This embodiment describes a combined casing shaping tool with a detachable cutter, which is characterized by: a combined casing shaping tool with a detachable cutter, the main structure of which includes an extrusion shaping part, a milling shaping part, a straightening part, a hydraulic part and a hydraulic anchor. The specific structure is shown in the appendix of the specification. Figure 1 .

[0041] The extrusion shaping part structure includes a shaping head 1, and its specific structure is shown in the appendix of the specification. Figure 2 , a plurality of shaping steel balls 2 are inlaid on its outer surface, and there are 6 groups of shaping steel balls 2, which are evenly distributed circumferentially along the outer surface of the shaping head 1. The shaping steel balls 2 in each group are distributed in a spiral manner along the axial direction, which can perform step-by-step extrusion and shaping of casings with different degrees of deformation, and the shaping head 1 can play a guiding role for the entire tool; a water eye flow channel 28 is opened inside the shaping head 1, and a total of 6 water eye flow channels 28 are evenly distributed circumferentially inside the shaping head 1 and extend to the outer surface of the shaping head 1, connecting the annular space between the inside of the tool and the casing. During the working process of the tool, the drilling fluid is discharged from the inside of the tool through the water eye flow channel 28 to the annular space, which can play a role of throttling and pressurization, and can realize the flushing and cooling of the casing during the shaping process, and can circulate the iron filings generated by grinding and milling to the wellhead for discharge.

[0042] The main structure of the milling part includes a milling cylinder 15 , an annular milling tool 4 , and a rectangular milling tool 6 .

[0043] The specific structure of the milling cylinder 15 is shown in the attached specification. Fig. 9 A piston channel 51 is provided inside thereof to provide a channel for the axial movement of the hydraulic piston 18. A double-layer milling cylinder sealing groove 50 is provided at the lower part of the piston channel 51 to achieve sealing of the inside of the milling cylinder 15; four annular milling tool bolt holes 49 are evenly distributed along the circumferential direction on the outer surface of the lower part of the milling cylinder 15, which are used to fix the annular milling tool 4 to the outer surface of the milling cylinder 15, and can facilitate the replacement of the annular milling tool 4 after wear; four rectangular milling tool grooves 47 are evenly distributed along the circumferential direction on the outer surface of the middle part of the milling cylinder 15, and pin fixing holes 48 are opened on both sides of the rectangular milling tool groove 47, which are used to fix the rectangular milling tool 6 in the rectangular milling tool groove 47.

[0044] The specific structure of the annular milling tool 4 is shown in the attached specification. Figure 3, its outer surface is evenly distributed with 4 annular grinding blades 30 along the circumferential direction, each annular grinding blade 30 extends spirally along the axial direction, and an annular grinding tool step hole 29 is provided between each annular grinding blade 30, which is coaxially matched with the annular grinding tool step hole 29 on the grinding cylinder 15, and the annular grinding tool connecting bolt 5 is used to fix the annular grinding tool 4 on the grinding cylinder 15, thereby enabling the annular grinding tool 4 to achieve preliminary grinding and shaping of the deformed casing.

[0045] The specific structure of the rectangular milling tool 6 is shown in the attached specification. Figure 4 A rectangular milling tool fixing hole 34 is opened on its side, which can be used for the pin shaft 7 to fix it in the rectangular milling tool groove 47. A rectangular milling blade 33 is provided on the upper surface of the rectangular milling tool 6, which can realize further milling and shaping of the deformed sleeve.

[0046] The main structure of the straightening part includes a straightening shell 9, a straightening block 10, a shock-absorbing leaf spring 14, a straightening ball 12, and a straightening ball baffle 13.

[0047] The specific structure of the uprighting housing 9 is shown in the attached specification. Figure 5 During assembly, the inner walls 38 of the four straightening shells 9 are placed close to the small-diameter section 46 of the milling cylinder, and two adjacent straightening shells 9 are connected by the straightening shell connecting bolts 8 passing through the straightening shell connecting holes 35 opened on the two sides thereof; a straightening block fixing groove 36 and a shock-absorbing leaf spring fixing step 37 are processed on the side of the straightening shell 9, and the side of the straightening block 10 is placed close to the straightening block fixing groove 36, and radially limited by the straightening block step 41, and the shock-absorbing leaf spring 14 is placed on the shock-absorbing leaf spring fixing step 37, which can play a shock-absorbing role in the straightening process.

[0048] The specific structure of the straightening block 10 is shown in the attached specification. Figure 6 The upper surface thereof is processed with three righting ball circular grooves 40 for placing the righting ball 12, and is provided with two righting block bolt holes 39 for fixing the righting ball baffle 13 using the righting ball baffle bolts 11.

[0049] The specific structure of the straightening ball baffle 13 is shown in the attached specification. Figure 7 Two righting ball baffle bolt holes 42 are processed thereon; and three righting ball limiting holes 43 are processed thereon for limiting the righting ball 12.

[0050] The specific structure of the damping leaf spring 14 is shown in the attached specification. Figure 8 .

[0051] The main structure of the hydraulic part includes a hydraulic cylinder 16 , a hydraulic piston 18 , and a piston spring 17 .

[0052] The specific structure of the hydraulic cylinder body 16 is shown in the attached specification Fig.10The lower part is processed with a hydraulic cylinder body outer thread 56 which is threadedly connected to the milling cylinder 15, and the upper part is processed with a hydraulic cylinder body inner thread 52 which is threadedly connected to the anchoring part; a piston cavity step 55 is processed in the piston cavity 53 inside the hydraulic cylinder body 16 for placing the piston spring 17; four air holes 54 evenly distributed along the circumferential direction are processed in the piston cavity 53; a process groove 57 is processed on the outer surface of the hydraulic cylinder body 16 to facilitate the subsequent assembly of the hydraulic cylinder body 16.

[0053] The specific structure of the hydraulic piston 18 is shown in the attached specification. Fig.11 , a stepped shaft section is processed on its upper part, and a hydraulic piston sealing groove 58 is provided; during the assembly process, the hydraulic piston 18 is placed in the piston cavity 53, and the piston spring 17 is fixed by relying on its upper piston step surface 59 and the piston cavity step 55 in the piston cavity 53; the lower end of the hydraulic piston 18 is processed with a piston external thread 62, which is used for threaded connection with the shaping head 1 and transmits the axial thrust to the shaping head 1 for extrusion shaping; a piston flow channel 60 is provided in the hydraulic piston 18 for the circulation of drilling fluid; the upper part is processed with a piston internal thread 61, which can realize the series connection of multiple hydraulic pistons 18 when the shaping force is insufficient.

[0054] The main structure of the hydraulic anchor includes a hydraulic anchor body 20 , an anchor claw 25 , a hydraulic anchor baffle 22 , an inner spring 24 , and an outer spring 23 .

[0055] The specific structure of the hydraulic anchor body 20 is shown in the attached specification. Fig.12 The lower end thereof is processed with a hydraulic anchor external thread 67 which is threadedly connected to the hydraulic cylinder body 16, and the upper end thereof is processed with a hydraulic anchor internal thread 63, which can transmit the torque of the upper pipe string to the entire tool; the side surface of the hydraulic anchor body 20 is circumferentially distributed with 18 anchor claw grooves 65 for accommodating the anchor claws 25, and every two anchor claw grooves 65 are axially adjacent and share a hydraulic anchor baffle groove 68, in which two hydraulic anchor baffle bolt holes 66 are processed; the bottom of the anchor claw groove 65 is open and connected to the hydraulic anchor flow channel 64, so that the high-pressure drilling fluid acts on the bottom surface of the anchor claw 25 and pushes it out radially, so that the anchor claw 25 contacts the inner wall of the casing, and the entire tool is anchored in the casing.

[0056] The specific structure of the anchor claw 25 is shown in the attached specification. Fig.14 The side of the anchor claw 25 is processed with an anchor claw sealing groove 74 to ensure sealing so that the anchor claw 25 can be smoothly extended; the inside of the anchor claw 25 is processed with an anchor claw spring groove 72 for placing the inner spring 24 and the outer spring 23. The inner and outer springs realize the retraction of the anchor claw 25 after pressure relief under the limitation of the hydraulic anchor baffle 22; the top of the anchor claw 25 is provided with an anchor claw tooth 71, which can realize reliable anchoring of the entire tool; the inside of the anchor claw 25 is processed with an anchor claw inner wall 73 to fit the anchor claw limiting surface 70 in the hydraulic anchor baffle 22, thereby limiting the rotation of the anchor claw 25.

[0057] The specific structure of the hydraulic anchor baffle 22 is shown in the attached specification. Fig.13 The hydraulic anchor baffle plate 22 is fixed in the hydraulic anchor baffle plate groove 68 by passing the hydraulic anchor baffle plate bolt 21 through the hydraulic anchor baffle plate fixing hole 69 processed on its surface, thereby limiting the anchor claw 25 and the inner and outer springs.

[0058] Working principle:

[0059] The tool is connected to the drill pipe and lowered along with the drill pipe into the oil and gas well where casing shaping is required. The lowering is stopped when encountering resistance, and the pipe string is lifted to an appropriate position. A surface pump truck starts to add high-pressure drilling fluid into the pipe string. The high-pressure drilling fluid produces a throttling effect at the water eye flow channel 28 inside the shaping head 1, thereby generating a pressure drop between the inside of the tool and the external annular space, thereby pushing the anchor claws 25 to extend radially, anchoring the entire tool in the casing.

[0060] Then, the hydraulic piston 18 moves axially under the action of pressure, thereby pushing the shaping head 1 forward and extruding and shaping the inner wall of the deformed sleeve; considering that for the deformed sleeve requiring a large shaping force, a single hydraulic part in the tool may be difficult to achieve extrusion shaping, so multiple hydraulic parts can be connected in series to increase the shaping force, and the piston internal thread 61 processed on the upper part of the hydraulic piston 18 also facilitates the series connection of multiple hydraulic pistons 18.

[0061] After the shaping head 1 has shaped, the ground pump truck reduces the pressure. At this time, the hydraulic piston 18 drives the shaping head 1 to retract under the action of the piston spring 17, and the anchor claw 25 also retracts under the action of the inner and outer springs to release the anchor.

[0062] Then the tool starts to rotate, and after reaching the target drilling speed, the tool is slowly lowered, and the annular milling cutter 4 starts to perform the first milling and shaping of the deformed casing; after the annular milling cutter 4 has milled through, the rectangular milling cutter 6 performs more detailed milling and shaping of the deformed casing, and the rotation of the tool is gradually stopped after the entire tool has successfully passed the deformation position of the casing, thereby completing the shaping of the deformed casing.

Claims

1. A combined casing shaping tool with detachable cutters, characterized in that: It includes an extrusion shaping part, a grinding shaping part, a hydraulic part, a straightening part, a hydraulic part, and a hydraulic anchor; the grinding shaping part includes an annular grinding tool, an annular grinding tool connecting bolt, a rectangular grinding tool, a pin shaft, and a grinding cylinder; a piston channel is provided inside the grinding cylinder, an internal thread is provided on the upper part, and threaded holes are distributed circumferentially on the lower outer surface; the annular grinding tool is fixed to the outer surface of the grinding cylinder by the annular grinding tool connecting bolt; the annular grinding tool is in the shape of a thin-walled cylinder, and a step hole is provided circumferentially on its side surface, which is used to enable the annular grinding tool connecting bolt to fix it to the outer surface of the grinding cylinder; the outer surface of the annular grinding tool is evenly distributed with grinding blades in the circumferential direction, and extends spirally along the axial direction; the upper part of the grinding cylinder is evenly distributed with rectangular grinding tool grooves in the circumferential direction for placing the rectangular grinding tool, and through holes are provided on both side surfaces of the rectangular grinding tool groove and the side surface of the rectangular grinding tool, which are used to enable the pin shaft to fix the rectangular grinding tool to the rectangular grinding tool The rectangular milling tool body is in the shape of a rectangular parallelepiped, and a milling blade is arranged on its upper surface; the straightening part comprises: a milling cylinder, a straightening shell, a straightening block, a damping leaf spring, a straightening shell connecting bolt, a straightening ball, a straightening ball baffle, and a straightening ball baffle bolt; the straightening shell is in the shape of a quarter cylinder, and is placed closely on the upper part of the milling cylinder; through holes are arranged on its two side surfaces, and deep grooves are opened for placing the straightening block and the damping leaf spring; the damping leaf spring is placed between the straightening block and the straightening shell The straightening block and the damping leaf spring are placed between two adjacent straightening shells. A circular groove is provided on the outer surface of the straightening block for placing the straightening ball. A through hole is provided on the straightening ball baffle, and a step hole is opened on the baffle plate for fixing the straightening ball to the outer surface of the straightening block with the straightening ball baffle bolts, and fixing the straightening ball in the circular groove of the straightening block.

2. A combined casing shaping tool with detachable cutters according to claim 1, characterized in that: The extrusion shaping part includes a shaping head, which is conical and has shaping steel balls embedded on its surface. The shaping steel balls are evenly distributed in 6 groups along the circumference, and each group is axially spirally embedded on the surface of the shaping head. An internal thread is provided inside the shaping head.

3. A combined casing shaping tool with detachable cutters according to claim 1, characterized in that: The hydraulic part includes a hydraulic piston, a piston spring, and a hydraulic cylinder body. The two ends of the hydraulic cylinder body are processed with tapered threads, which are easy to transmit torque and have certain sealing performance. The side of the hydraulic cylinder body is evenly distributed with air holes along the circumferential direction, and the inside is processed with a step surface for placing the piston spring. The hydraulic piston is in the shape of a stepped shaft, and its shaft end is provided with an external thread, which is threadedly connected to the shaping head. The hydraulic piston is processed with a through flow channel inside, and the piston spring is placed between the hydraulic cylinder body and the two step surfaces of the hydraulic piston.

4. The combined casing shaping tool with detachable cutter according to claim 1, characterized in that: The hydraulic anchor is connected to the upper part of the extruded and shaped part by threads. The hydraulic anchor has 18 anchor claws distributed along the circumference, which greatly increases the anchoring force and can play a certain righting role under low pressure.

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