A kind of integrated scooping and grinding device and using method

Abstract

The invention discloses a salvaging and grinding integrated device, which relates to the technical field of oil drilling, and solves the technical problem of lacking an instrument salvaging tool that can timely cut off the connection between the salvaging tool and the salvaged equipment when the salvaging resistance is too large, so as to avoid the loss of the salvaging tool. The invention comprises a fixing component, a grinding and milling component, a clamping component and a guiding component that are sequentially connected to form a passage; the clamping component comprises a slip shaft, on which a spring sleeve and a slip cage are sequentially sleeved, and a shear ring is also arranged on the slip shaft, and a plurality of slip parts for clamping the salvaged equipment are movably arranged inside the slip cage; a plurality of shear pins that can cooperate with the shear ring are arranged on the inner wall of the spring sleeve; the purpose is that when the salvaging resistance is too large, the shear pins are broken by pulling force, the slip parts are retracted, and thus the salvaging device is retracted, so as to avoid underground accidents caused by construction, which violates the original intention of a drilling, grinding and milling salvage trip.

Description

Technical Field

[0001] The invention belongs to the technical field of oil drilling, and in particular relates to a bailing and grinding integrated device and a use method thereof. Background Art

[0002] Downhole salvage in the oil system refers to the process of oil drilling, oil production and water injection. If there is loss or obstruction of downhole equipment, it needs to be salvaged through downhole operations. There are different salvage technologies for different loss and obstruction situations, including salvage through gloves coated with chemicals, salvage of obstacles through ropes and ropes, salvage through water pressure impact to destroy the obstruction, and salvage by drilling to remove the obstruction of the damaged equipment.

[0003] However, when used to salvage the packer inside the seated casing, if the resistance between the packer and the casing is too great and the packer cannot be pulled out due to casing deformation, cracks in the body or other falling objects, the salvage tool and the packer may be easily pulled apart together, thereby causing the loss of the salvage tool. Therefore, there is currently a lack of a packer salvage tool that can cut off the connection between the salvage tool and the packer in time when the salvage resistance is too great when salvaging the packer inside the seated casing, thereby avoiding the loss of the salvage tool. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an integrated scavenging and grinding device. When the salvaging resistance is too large, the pulling force causes the shear pin to break, so that the clamping assembly is disengaged and the cava part is retracted, thereby retracting the salvaging device, avoiding the situation where the salvaging tool and the salvaged equipment are easily pulled apart when the resistance is too large and cannot be pulled out, thereby avoiding underground accidents during construction and violating the original intention of a drilling, grinding and milling salvage trip.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A scooping and grinding integrated device comprises a fixing assembly, a grinding and milling assembly, a clamping assembly and a guiding assembly which are sequentially connected to form a passage;

[0007] The clamping assembly includes a slip shaft, on which a spring sleeve and a slip cage are movably sleeved in sequence. A shear ring is also fixedly arranged on the slip shaft, and the shear ring is located inside the spring sleeve on a side away from the slip cage. The slip cage has several slip parts movably arranged inside for clamping the salvaged equipment; the inner wall of the spring sleeve is provided with several shear pins that can cooperate with the shear ring.

[0008] By adopting the above technical solution, when the device has not yet entered the interior of the packer to be salvaged, the slip member is in an extended state. After the salvage begins, the guide assembly and the clamping assembly pass through the packer to be salvaged in sequence. At this time, the slip member is retracted inside the slip cage, and its surface is flush with the surface of the slip cage. At this time, the entire slip cage moves upward due to the squeezing of the slip member, and the spring sleeve moves upward accordingly. When the end of the casing to be salvaged is located above the slip member, the slip member pops out, and the slip member is clamped at the end of the casing; at this time, the spring sleeve moves upward to cause the shear pin to move upward. The nail moves upward, and when it moves to the position of the shear ring, the shear pin is clamped into the inside of the shear ring to fix the entire clamping part; then the salvage device is pulled upward, and when the resistance of the packer is too great and it cannot be salvaged, the pulling force causes the shear pin to break, thereby disengaging the clamping assembly and retracting the slip piece, thereby retracting the salvage device, avoiding the situation where the resistance is too great to be pulled out, which may easily cause the salvage tool and the salvaged equipment to be pulled apart together, thereby avoiding underground accidents during construction and violating the original intention of a drilling, grinding and milling salvage trip.

[0009] Preferably, several of the slip members are distributed axially along the slip axis, the interior of the slip cage is provided with chambers matching the shapes of the several slip members, and several of the chambers are provided with openings at positions corresponding to the outer wall of the slip cage.

[0010] By adopting the above technical solution, the slip piece can be ejected from the opening.

[0011] Preferably, the slip shaft is provided with a plurality of annular first bosses along the length direction, and the slip member is provided with a first groove matching with the first bosses.

[0012] By adopting the above technical scheme, in the initial state, that is, when the cava member has not yet entered the inner hole of the packer, the second boss formed between the first grooves on the cava member contacts the first boss on the cava shaft, and the cava member is in an extended state, and the outer diameter surrounding the cava member is larger than the inner diameter of the packer; after pressurization, the cava member is squeezed into the cava cage, and at this time the outer side of the cava member is flush with the outer wall of the cava cage, so that the cava member and the cava cage can enter the inner hole of the packer, and at this time the first groove on the cava member coincides with the first boss; after the cava cage passes through the packer, the cava member extends and resets again, and at this time the outer diameter formed by the cava member is larger than the inner diameter of the packer, so when the salvage device is lifted, a clamping resistance to the packer will be formed.

[0013] Preferably, second protrusions are respectively provided on both sides of the slip member, and a second groove cooperating with the second protrusion is formed in the cavity.

[0014] By adopting the above technical solution, the second protrusion cooperates with the second groove, which makes it easy to connect the slip member and the slip cage.

[0015] Preferably, a spring is arranged inside the spring sleeve, and the spring sleeve is arranged on the cava shaft. A third annular protrusion is arranged on the cava shaft, and the third protrusion is located between the shear ring and the spring; one end of the cava cage close to the spring sleeve is embedded in the interior of the spring sleeve and fixedly connected to the spring sleeve, and the caliber of the end of the cava cage close to the spring sleeve is larger than the caliber of the spring.

[0016] By adopting the above technical solution, the third protrusion is easy to bear the pressure of the shear ring, and the third protrusion can abut the spring; when the shear pin is cut off, the elastic force of the spring can quickly cause the spring sleeve to fall, so that the cava part is retracted into the cava cage, which is convenient for the rapid recovery of the device.

[0017] Preferably, the fixing assembly includes an upper joint, an upper core shaft and a central core shaft which are threadedly connected in sequence, and bolts for reinforcement are also provided at the connection between the upper joint, the upper core shaft and the central core shaft; the side of the central core shaft away from the upper core shaft is threadedly connected to the cava shaft, and bolts for reinforcement are also provided at the connection between the central core shaft and the cava shaft.

[0018] By adopting the above technical solution and modular construction design, the device can be increased or decreased according to the length of the packer, and the overall connection is a positive rotation connection and is equipped with a fixing screw lock to prevent disengagement.

[0019] Preferably, the milling assembly includes a sleeve milling head, which is sleeved on the outside of the upper core shaft, and the side of the sleeve milling head close to the upper joint is provided with an internal thread, and the side of the upper joint is provided with an external thread, and the sleeve milling head and the upper joint are threadedly connected with each other through the external thread and the internal thread.

[0020] By adopting the above technical scheme, when the cava cage passes through the lower end of the packer, the milling head contacts the upper end of the packer, and the pressurized milling operation is started at this time until the packer loses its sealing force with the casing. After the packer loses its sealing force, the lifting device is used until the cava member catches the packer again, so that the packer can be lifted and salvaged by means of the lifting and salvaging device. In another case, the packer loses its sealing force and will automatically fall to the position of the cava member and be caught by the cava member.

[0021] Preferably, the guide assembly includes a guide head, and the end of the slip shaft is fixed to the guide head by bolts.

[0022] By adopting the above technical solution, a slope is arranged on the guide head, so as to facilitate better entry into the inner hole of the packer and play a guiding role.

[0023] A method for using a scooping and grinding integrated device, based on the above-mentioned scooping and grinding integrated device, comprises the following steps:

[0024] Step 1: lower the device at a constant speed;

[0025] Step 2: Mark the tool accurately when lowering it and record the lowering depth;

[0026] Step 3: When the device is at a certain distance from the top surface of the packer, start the pump with a large displacement to flush and find out the position of the packer, apply pressure to pass through the center pipe of the packer, and try to lift the pipe string. Before the slips are stuck in the packer, lift and lower it back and forth at a uniform speed for several times. If it exceeds 10-20KN, the packer is fished out.

[0027] Preferably, a salvage basket is connected above the integrated salving and grinding device to capture large iron filings after grinding and milling as well as other fallen objects in the wellbore.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] 1. The milling shoe can be stabilized inside the casing, and the bottom of the device stabilizes the milling shoe, so as to efficiently complete the casing milling operation;

[0030] 2. The milling head can complete the milling and recovery of the packer at one time. The milling operation after the salvage device captures the packer can effectively avoid the traditional method of milling the packer first and then salvaging, which causes the packer that loses its sealing force to be squeezed into the bottom of the well. Therefore, the recovery rate of the packer after the milling operation is completed by using this device can reach 90%;

[0031] 3. Through modular construction design, the device can be increased or decreased according to the length of the packer, and the overall connection is positive rotation connection and equipped with fixed screw lock to prevent disengagement;

[0032] 4. When the salvage resistance is too great, the shear pin is broken by the pulling force, so that the clamping assembly is disengaged, the slips are retracted, and the salvage device is retracted, avoiding the situation where the salvage tool and the salvaged equipment are easily broken when the resistance is too great and cannot be pulled out, thus avoiding underground accidents during construction and violating the original intention of a drilling, grinding and milling salvage trip;

[0033] 5. This device combines the two processes of milling the permanent packer and salvaging the packer that has lost its seat seal into one. Only one trip of the operating pipe is needed to realize the milling and salvaging of the underwater permanent packer, which shortens the construction period and saves the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0035] Figure 1 It is a schematic diagram of the overall structure of a scooping and grinding integrated device in the present invention;

[0036] Figure 2It is a schematic cross-sectional view of a scoop-grinding integrated device in the present invention;

[0037] Figure 3 The present invention Figure 2 A schematic diagram of the enlarged structure of the A part;

[0038] Figure 4 The present invention Figure 2 A schematic diagram of the enlarged structure of the B part;

[0039] Figure 5 It is a schematic diagram of a slip of a bailing-grinding integrated device in the present invention in a state of being extended and stuck;

[0040] Figure 6 It is a schematic diagram of a state in which a shear pin of a bailing-grinding integrated device of the present invention is sheared off and the slips are contracted.

[0041] Reference numerals

[0042] 1-upper joint; 2-sleeve milling head; 3-upper mandrel; 4-middle mandrel; 401-first boss; 5-claw shaft; 501-third protrusion; 6-spring sleeve; 7-shear ring; 8-claw cage; 801-second groove; 9-claw piece; 901-second protrusion; 10-spring; 11-lead; 12-first top screw; 13-second top screw; 14-shear pin. DETAILED DESCRIPTION

[0043] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and indicated in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0044] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] Combine the following Figures 1 to 4 The present invention is described in detail.

[0046] Example 1

[0047] A scooping and grinding integrated device, see attached Figures 1-2 , including a fixing assembly, a milling assembly, a clamping assembly and a guiding assembly which are sequentially connected to form a passage;

[0048] The clamping assembly includes a slip shaft 5, on which a spring sleeve 6 and a slip cage 8 are movably sleeved in sequence, and a shear ring 7 is also fixedly arranged on the slip shaft 5. The shear ring 7 is located inside the spring sleeve 6 on the side away from the slip cage 8, and four slip members 9 for clamping the salvaged equipment are movably arranged inside the slip cage 8; two shear pins 14 that can cooperate with the shear ring 7 are arranged on the inner wall of the spring sleeve 6; before the device enters the interior of the packer to be salvaged, the slip member 9 is in an extended state, and after the salvage starts, the guiding assembly and the clamping assembly pass through the packer to be salvaged in sequence, at which time the slip member 9 shrinks inside the slip cage 8, and its surface is flush with the surface of the slip cage 8, and at this time the entire slip cage 8 moves upward due to the squeezing of the slip member 9, and the spring member 9 is pressed upward. The spring sleeve 6 moves upward accordingly, and when the end of the casing to be salvaged is located above the slip member 9, the slip member 9 pops out, and at this time the slip member 9 is clamped on the end of the casing; at this time, the spring sleeve 6 moves upward to cause the shear pin 14 to move upward, and when it moves to the position of the shear ring 7, the shear pin 14 is clamped into the interior of the shear ring 7 to fix the entire clamping member; then the salvage device is pulled upward, and when the resistance of the packer is too great and it cannot be salvaged, the pulling force causes the shear pin 14 to break, thereby disengaging the clamping assembly, retracting the slip member 9, and thus retracting the salvage device, avoiding the situation where the resistance is too great to be pulled out, which may easily cause the salvage tool and the salvaged equipment to be pulled apart together, thereby avoiding underground accidents caused by construction, which violates the original intention of a drilling, grinding and milling salvage trip.

[0049] In this embodiment, the four cava members 9 are distributed along the axial direction of the cava shaft 5, and the interior of the cava cage 8 is provided with a chamber that matches the shape of the four cava members 9, and the four chambers are provided with openings at the positions corresponding to the outer wall of the cava cage 8; the cava members 9 can pop out from the openings.

[0050] In this embodiment, three annular first bosses 401 are arranged on the cava shaft 5 along the length direction, and a first groove cooperating with the first boss 401 is arranged on the cava member 9; in the initial state, that is, when the cava member 9 has not yet entered the inner hole of the packer, the second boss formed between the first grooves on the cava member 9 contacts the first boss 401 on the cava shaft 5, and the cava member 9 is in an extended state, and the outer diameter surrounding the cava member 9 is larger than the inner diameter of the packer; after pressurization, the cava member 9 is squeezed into the cava cage 8, and at this time the outer side of the cava member 9 is flush with the outer wall of the cava cage 8, so that the cava member 9 and the cava cage 8 can enter the inner hole of the packer, and at this time the first groove on the cava member 9 is consistent with the first boss 401; refer to the attached Figure 5 After the slip cage 8 passes through the packer, the slip member 9 is extended and reset again. At this time, the outer diameter formed by the slip member 9 is larger than the inner diameter of the packer. Therefore, when the salvage device is lifted, a clamping resistance to the packer will be formed.

[0051] In this embodiment, second protrusions 901 are respectively provided on both sides of the slip member 9, and a second groove 801 cooperating with the second protrusion 901 is formed in the chamber; the second protrusion 901 cooperates with the second groove 801 to facilitate the connection between the slip member 9 and the slip cage 8.

[0052] In this embodiment, a spring 10 is provided inside the spring sleeve 6, and the spring sleeve 6 is provided on the cava shaft 5. A ring-shaped third protrusion 501 is provided on the cava shaft 5, and the third protrusion 501 is located between the shear ring 7 and the spring 10; the end of the cava cage 8 close to the spring sleeve 6 is embedded in the interior of the spring sleeve 6 and fixedly connected to the spring sleeve 6, and the caliber of the end of the cava cage 8 close to the spring sleeve 6 is larger than the caliber of the spring 10; the third protrusion 501 is convenient for bearing the pressure of the shear ring 7, and the third protrusion 501 can abut against the spring 10; when the shear pin 14 is cut off, the elastic force of the spring 10 can quickly cause the spring sleeve 6 to fall, so that the cava member 9 is retracted into the cava cage 8, which is convenient for rapid recovery of the device.

[0053] In this embodiment, the fixing assembly includes an upper joint 1, an upper core shaft 3 and a central core shaft 4 which are threadedly connected in sequence, and bolts for reinforcement are also provided at the connections between the upper joint 1, the upper core shaft 3 and the central core shaft 4; the central core shaft 4 is threadedly connected to the cava shaft 5 on one side away from the upper core shaft 3, and bolts for reinforcement are also provided at the connection between the central core shaft 4 and the cava shaft 5; through a modular construction design, the device can be increased or decreased according to the length of the packer, and the overall connection is a positive rotation connection and is equipped with a fixing screw lock to prevent disengagement.

[0054] In this embodiment, the milling assembly includes a sleeve milling head 2, which is sleeved on the outside of the upper core shaft 3. The side of the sleeve milling head 2 close to the upper joint 1 is provided with an internal thread, and the side of the upper joint 1 is provided with an external thread. The sleeve milling head 2 and the upper joint 1 are threadedly connected with each other through the external thread and the internal thread; when the cava cage 8 passes through the lower end of the packer, the sleeve milling head 2 contacts the upper end of the packer, and the pressurized sleeve milling operation is started at this time until the packer loses the sealing force with the casing. After the packer loses the sealing force, the lifting device is used until the cava component 9 clamps the packer again, so that the packer can be lifted and salvaged by means of the lifting and salvaging device; there is also a situation that the packer loses its sealing and will automatically fall to the position of the cava component 9 and be clamped by the cava component 9.

[0055] In this embodiment, the guide assembly includes a guide head, and the end of the slip shaft 5 is fixed to the guide head by bolts; an inclined surface is provided on the guide head to facilitate better entry into the inner hole of the packer, thereby playing a guiding role.

[0056] Principle and working process:

[0057] During salvage, the guide head guide device enters the interior of the packer. This is the initial state, that is, when the slip member 9 has not yet entered the inner hole of the packer, the second boss formed between the first grooves on the slip member 9 contacts the first boss 401 on the slip shaft 5, and the slip member 9 is in an extended state. The outer diameter around the slip member 9 is larger than the inner diameter of the packer; then, after pressurization, the slip member 9 is squeezed into the slip cage 8. At this time, the outer side of the slip member 9 is flush with the outer wall of the slip cage 8, which facilitates the slip member 9 and the slip cage 8 to enter the inner hole of the packer. At this time, the first groove on the slip member 9 coincides with the first boss 401; after the slip cage 8 passes through the packer, the slip member 9 is extended and reset again. At this time, the outer diameter formed by the slip member 9 is larger than the inner diameter of the packer, so the salvage device is lifted up. When the packer is in place, it will form a clamping resistance to the packer; when the resistance reaches 10-20KN, it can be known that part of the slip cage 8 has passed through the lower end of the packer. At this time, continue to pressurize downwards, and the sleeve milling head 2 contacts with the upper end of the packer. At this time, start the pressurized sleeve milling operation, thereby sleeve milling the seat seal formed between the packer and the casing until the packer loses the sealing force with the casing. After the packer loses the sealing force, the lifting device is used until the slip member 9 clamps the packer again, so that the packer can be lifted and salvaged by lifting the salvage device; there is also a situation that the packer loses the seat seal and automatically falls to the position of the slip member 9 and is clamped by the slip member 9; pull up the salvage device, when the resistance of the packer is too large to be salvaged, refer to the attached Figure 3 The pulling force causes the shear pin 14 to break, thereby causing the clamping assembly to be unfastened. Figure 4 and attached Figure 6 , the slip member 9 is retracted, thereby retracting the salvaging device, avoiding the situation where the salvaging tool and the salvaged device are easily broken together when encountering too much resistance and cannot be pulled out, thereby causing the loss of the salvaging tool.

[0058] Example 2

[0059] A method for using a scooping and grinding integrated device, based on the above-mentioned scooping and grinding integrated device, comprises the following steps:

[0060] Step 1: Before entering the well, check whether all parts of the device are loose, damaged or deformed. Lower the device into the well at a steady speed. Do not rush down at high speed when encountering obstacles to prevent damage to the tool, damage to the connecting threads, and deformation of the tool.

[0061] Step 2: Mark the tool accurately when lowering it and record the lowering depth;

[0062] Step 3: When the device is at a certain distance from the top surface of the packer, start the pump with a large displacement to flush and find out the position of the packer, apply pressure to pass through the center pipe of the packer, and try to lift the pipe string. Before the slip 9 is stuck in the packer, lift and lower it back and forth at a uniform speed for many times. If it exceeds 10-20KN, the packer is fished out.

[0063] A salvage basket is connected above the integrated salvaging and grinding device to capture large iron filings after grinding and milling as well as other fallen objects in the wellbore.

[0064] When the device is 10M away from the top of the packer, start the pump with a large displacement to flush and probe at a speed of 0.5M / min to find out the position of the packer, and mark it on the pipe string; pressurize the guide head to enter the center pipe of the packer at 0.5-10KN, and the fishing extension rod passes through the center pipe of the packer. Try to lift the pipe string. If it exceeds 10-20KN, the packer is fished out.

[0065] It should be noted that:

[0066] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A scooping and grinding integrated device, characterized in that: It includes a fixing assembly, a milling assembly, a clamping assembly and a guiding assembly which are sequentially connected to form a passage; The clamping assembly comprises a slip shaft (5), on which a spring sleeve (6) and a slip cage (8) are movably sleeved in sequence, and a shear ring (7) is fixedly arranged on the slip shaft (5), the shear ring (7) being located inside the spring sleeve (6) on a side away from the slip cage (8), and a plurality of slip members (9) for clamping the salvaged equipment are movably arranged inside the slip cage (8); a plurality of shear pins (14) capable of cooperating with the shear ring (7) are arranged on the inner wall of the spring sleeve (6); A spring (10) is arranged inside the spring sleeve (6), the spring sleeve is arranged on the slip shaft (5), an annular third protrusion (501) is arranged on the slip shaft (5), and the third protrusion (501) is located between the shear ring (7) and the spring (10); one end of the slip cage (8) close to the spring sleeve (6) is embedded in the spring sleeve (6) and is fixedly connected to the spring sleeve (6), and the caliber of the end of the slip cage (8) close to the spring sleeve (6) is larger than the caliber of the spring (10); The fixing assembly comprises an upper joint (1), an upper core shaft (3) and a central core shaft (4) which are threadedly connected in sequence, and bolts for reinforcement are also provided at the connection between the upper joint (1), the upper core shaft (3) and the central core shaft (4); a side of the central core shaft (4) away from the upper core shaft (3) is threadedly connected to the slip shaft (5), and bolts for reinforcement are also provided at the connection between the central core shaft (4) and the slip shaft (5); The milling assembly comprises a sleeve milling head (2), the sleeve milling head (2) being sleeved on the outside of the upper core shaft (3), the sleeve milling head (2) being provided with an internal thread on a side close to the upper joint (1), and the upper joint (1) being provided with an external thread on one side, the sleeve milling head (2) and the upper joint (1) being threadedly connected via the external thread and the internal thread cooperating with each other.

2. The integrated scooping and grinding device according to claim 1, characterized in that: A plurality of the slip members (9) are distributed along the axial direction of the slip shaft (5); a chamber matching the shape of the plurality of the slip members (9) is arranged inside the slip cage (8); and openings are arranged at locations of the plurality of the chambers corresponding to the outer wall of the slip cage (8).

3. The integrated scooping and grinding device according to claim 2, characterized in that: The slip shaft (5) is provided with a plurality of annular first bosses (401) along the length direction, and the slip member (9) is provided with a first groove matching the first bosses (401).

4. The integrated scooping and grinding device according to claim 2, characterized in that: Second convex blocks (901) are respectively arranged on both sides of the slip member (9), and a second groove (801) matching with the second convex block (901) is formed in the cavity.

5. The integrated scooping and grinding device according to any one of claims 1 to 4, characterized in that: The guide assembly comprises a guide head, and the end of the slip shaft (5) is fixed to the guide head by means of bolts.

6. A method for using a scooping and grinding integrated device, characterized in that: The integrated reaping and grinding device according to any one of claims 1 to 5 comprises the following steps: Step 1: lowering the integrated scooping and grinding device at a uniform speed; Step 2: When lowering the integrated scoop-grinding device, mark it accurately and record the lowering depth; Step 3: When the bailing and grinding device is at a certain distance from the top surface of the packer, the pump is turned on to flush with a large displacement to find the position of the packer, and pressure is applied to pass through the center pipe of the packer to try to lift the pipe string. Before the slip (9) is stuck in the packer, the pipe string is lifted and lowered back and forth at a uniform speed for multiple times. If the force exceeds 10-20KN, the packer is caught.

7. The method for using the integrated scooping and grinding device according to claim 6, characterized in that: A salvage basket is connected above the integrated salvaging and grinding device to capture large iron filings after grinding and milling as well as other fallen objects in the wellbore.

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