A method and apparatus for drilling a borehole

Abstract

The present application belongs to the technical field of drilling reaming, and discloses a drilling reaming tool and method. The drilling reaming tool comprises a rotating column, a guide module, a cutting module, a driving module, a collecting module and a control module. The rotating column is configured to be connected to a rotating rod, and a containing groove is formed in the side wall of the rotating column. The guide module comprises a guide piece and a sliding piece, the guide piece is arranged on the rotating column, and the sliding piece is slidingly arranged on the guide piece. The cutting module comprises a cutter main body, which is fixedly connected to the sliding piece. The sliding piece can drive the cutter main body to extend out of the containing groove to obtain a use position, or drive the cutter main body to retract into the containing groove to obtain a storage position. The driving module is connected to the sliding piece and is used for driving the sliding piece to slide. The collecting module comprises a first collecting module and is used for collecting pressure parameters of drilling fluid. The control module is used for generating a start instruction according to the pressure parameters and sending the start instruction to the driving module to drive the sliding piece to slide.

Description

Technical Field

[0001] This invention relates to the field of drilling reaming technology, and more particularly to a drilling reaming tool and method. Background Technology

[0002] During drilling operations, the original wellbore size often needs to be enlarged according to actual construction needs, and reaming tools, as a type of reaming tool, are being used more and more widely.

[0003] Currently, several major international oilfield service companies have mature reaming tools, such as Schlumberger's Rhino series reamers, Halliburton's RTM and URTM reamers, Baker Hughes' GaugePro reamers, Weatherford's RipTide reamers, and National Oilwell's Anderreamer reamers. These tools are all ball-throwing reamers, which use ball-throwing pressure to open the cutter wings and complete the hole enlargement function.

[0004] However, during construction, the ball-throwing method is rather cumbersome, and there may be problems such as the ball not being thrown in place, the blades being difficult to open, and the drill getting stuck and not being able to retract automatically, which seriously affect the smooth progress of hole enlargement and the safety of construction. Summary of the Invention

[0005] One objective of this invention is to provide a drilling reaming tool that eliminates the need for ball throwing and allows for the free opening and retraction of the cutting blades.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A reaming tool for drilling, comprising:

[0008] A rotating column is configured to be connected to a rotating rod, and a receiving groove is provided on the side wall of the rotating column;

[0009] A guiding module includes a guide member and a sliding member, wherein the guide member is disposed on the rotating column and the sliding member is slidably disposed on the guide member;

[0010] The cutting module includes a tool body fixedly connected to the sliding member. The sliding member can slide to drive the tool body to extend out of the receiving groove to obtain a use position, or drive the tool body to retract into the receiving groove to obtain a storage position.

[0011] A driving module, which is connected to the slider, is used to drive the slider to slide.

[0012] The acquisition module includes a first acquisition module for acquiring pressure parameters of drilling fluid.

[0013] The control module is used to generate a start-up command based on the pressure parameters and send it to the drive module to drive the slider to slide.

[0014] Optionally, the module also includes a limiting frame disposed on the wall of the receiving groove and opposite to the bottom of the receiving groove. The cutting module also includes a limiting seat fixedly connected to the tool body. The limiting seat is located between the bottom of the receiving groove and the limiting frame and is disposed on the sliding member. The limiting seat can move between the bottom of the receiving groove and the limiting frame under the drive of the sliding member, so as to drive the tool body to obtain the storage position or the use position.

[0015] Optionally, multiple limiting frames are provided, and the side of each limiting frame away from the groove wall of the receiving groove abuts against the periphery of the tool body.

[0016] Optionally, the acquisition module further includes a second acquisition module, which is used to acquire contact pressure information between itself and the limiting seat. The control module is also used to generate and send a stop command to the drive module based on the contact pressure information, so that the tool body stops at the use position or the storage position.

[0017] Optionally, the second acquisition module includes a first acquisition submodule and a second acquisition submodule. The first acquisition submodule is disposed on the side of the limiting frame near the limiting seat. The first acquisition submodule can acquire the contact pressure information when the limiting seat presses against the limiting frame, so as to stop the tool body in the use position. The second acquisition module is disposed on the bottom of the receiving groove. The second acquisition submodule can acquire the contact pressure information when the limiting seat presses against the bottom of the receiving groove, so as to stop the tool body in the storage position.

[0018] Optionally, the drive module includes a drive mechanism, a pull rope, and an elastic element. One end of the pull rope is connected to the output end of the drive mechanism, and the other end is connected to the sliding element. The elastic element is connected to the sliding element. The pull rope can pull the sliding element to slide along a first direction under the winding of the drive mechanism, and cause the elastic element to undergo elastic deformation. The elastic element can recover its elastic deformation under the unwinding of the drive mechanism to drive the sliding element to slide in the opposite direction along the first direction.

[0019] Optionally, one of the slider and the guide is fitted over the other.

[0020] Optionally, a pressure relief groove is provided on the side wall of the rotating column, which is used to balance the hydraulic or air pressure at both ends of the rotating column.

[0021] Optionally, the tool body includes a tool holder and a plurality of tools, each of which is disposed on the tool holder and the tool holder is fixedly connected to the sliding member. Each of the tools is provided with a spray nozzle, a diamond cutting blade and an alloy cutting post.

[0022] Another objective of this invention is to provide a drilling reaming method that eliminates the need for ball throwing and allows for the free opening and retraction of the cutter wings.

[0023] To achieve this objective, the present invention adopts the following technical solution:

[0024] A drilling reaming method, applied to the aforementioned drilling reaming tool, comprising:

[0025] S1. Before entering the well, adjust the pressure parameters of the drilling fluid and test the movement of the cutter body.

[0026] S2. Lower the reaming tool into the wellbore;

[0027] S3. Rotate the rotating column;

[0028] S4. Adjust the drilling fluid pressure parameters to make the cutter body extend out of the receiving tank at the first speed until the cutter body stops at the use position;

[0029] S5. Stay on the first line;

[0030] S6. Drill down until the predetermined depth is reached;

[0031] S7. Adjust the drilling fluid pressure parameters to retract the cutter body into the receiving tank until the cutter body stops in the storage position.

[0032] Beneficial effects:

[0033] The drilling reaming tool and method provided by this invention have one end of a rotating column connected to a rotating rod. A data acquisition module collects drilling fluid pressure parameters, and a control module generates a start-up command based on these parameters and sends it to a drive module. The drive module drives a sliding component to slide, causing the cutter body to extend out of the receiving groove and stop at the usage position. The rotating rod drives the rotating column to rotate, and the cutter body cuts the wellbore's peripheral wall, achieving the reaming effect. The sliding component then retracts the cutter body into the receiving groove, stopping it at the storage position, where the cutter body does not contact the wellbore's peripheral wall and does not cut it. The use and storage of the cutter body are controlled by the drilling fluid pressure pulse value, avoiding jamming accidents caused by ball-throwing. The use and storage of the cutter body are convenient and easily adjustable, ensuring consistent reaming diameter. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the tool body of the drilling reaming tool provided in the embodiment of the present invention at the usage position;

[0035] Figure 2 This is a schematic diagram of the tool body of the drilling reaming tool provided in the embodiment of the present invention in the storage position.

[0036] In the picture:

[0037] 1. Rotating column;

[0038] 2. Guide module; 21. Guide component; 22. Sliding component;

[0039] 3. Cutting module; 31. Tool body; 32. Limiting seat;

[0040] 4. Data Acquisition Module;

[0041] 5. Limiting bracket;

[0042] 6. Pressure relief groove. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0044] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0047] Figure 1 This diagram shows a schematic representation of the tool body of the drilling reaming tool provided in an embodiment of the present invention at its usage position. Figure 2 This diagram illustrates the structure of the tool body of the reaming tool provided in this embodiment of the invention in its storage position. The reaming tool provided in this embodiment specifically includes a rotary column 1, a guiding module 2, a cutting module 3, a drive module, a data acquisition module 4, and a control module.

[0048] The rotating rod 1 is configured to be connected to the rotating rod. Specifically, the rotating rod extends from the ground into the wellbore, and the rotating rod 1 is fixed to the lower end of the rotating rod. The rotation of the rotating rod drives the rotating rod 1 to rotate.

[0049] Reference Figure 1 and Figure 2 As shown, the guiding module 2 includes a guide member 21 and a sliding member 22. The guide member 21 is mounted on the rotating column 1, and the sliding member 22 is slidably mounted on the guide member 21. The cutting module 3 includes a tool body 31, which is fixedly connected to the sliding member 22. The driving module is connected to the sliding member 22 and is used to drive the sliding member 22 to slide, thereby driving the tool body 31 to move.

[0050] Reference Figure 1 and Figure 2 As shown, a receiving groove is formed on the side wall of the rotating column 1, and the cutter body 31 is housed in the receiving groove. The sliding member 22 can slide to drive the cutter body 31 out of the receiving groove to obtain the use position, or drive the cutter body 31 back into the receiving groove to obtain the storage position. When the cutter body 31 is in the use position, the rotating column 1 drives the cutter body 31 to rotate in the wellbore, thereby enabling the wellbore to be enlarged. When the cutter body 31 is in the storage position, the cutter body 31 is housed in the receiving groove of the rotating column 1, does not contact the wellbore wall, and does not produce a cutting action on the well wall.

[0051] The acquisition module 4 includes a first acquisition module, which is used to acquire the pressure parameters of the drilling fluid. The control module is used to generate a start-up command based on the pressure parameters and send it to the drive module to drive the sliding member 22 to slide. In this embodiment, a hydraulic pump is used to pump the drilling fluid, allowing it to flow both inside and outside the wellbore to promptly remove cuttings from the drilling process. The pressure parameters of the drilling fluid are changed by adjusting the pump pressure of the hydraulic pump; specifically, the pressure parameters include the pressure value and the pattern of pressure value change. In this embodiment, the pressure parameters are pressure pulse signals, and their specific transmission method is existing technology and will not be described further here.

[0052] In this embodiment, the first acquisition module is a piezoelectric chip that acquires the pressure value of the drilling fluid, obtains the pressure pulse change pattern of the drilling fluid, and converts the pressure pulse change pattern into an electrical signal, which is then transmitted to the control module. The control module is integrated into the PLC module, and the PLC module's storage module pre-stores the power-on command corresponding to the aforementioned electrical signal. After the control module obtains the aforementioned electrical signal, it retrieves the power-on command corresponding to the electrical signal from the storage module and sends it to the drive module, thereby causing the sliding member 22 to drive the cutter body 31 to extend out of the receiving groove or retract into the receiving groove. Optionally, a protective groove is provided on the rotating column 1, and the first acquisition module is disposed in the protective groove. In this embodiment, the protective groove is located at the end of the rotating column 1 near the rotating rod, which facilitates the acquisition of drilling fluid pressure parameters.

[0053] Optionally, one of the sliding member 22 and the guide member 21 is sleeved on the other. This sleeved connection results in a small, compact size, which is beneficial for designing small-sized reaming tools and increasing their applicability. The large contact surface between the guide member 21 and the sliding member 22 ensures smoother movement of the sliding member 22, preventing the tool body 31 from shaking. In this embodiment, the guide member 21 is a guide tube, and the sliding member 22 is a sliding post, which passes through the guide tube and slides axially relative to it.

[0054] Optionally, the drive module includes a drive mechanism, a pull rope, and an elastic element. One end of the pull rope is connected to the output end of the drive mechanism, and the other end is connected to the slider 22. The elastic element is connected to the slider 22. The pull rope can pull the slider 22 to slide along the first direction under the winding of the drive mechanism and cause the elastic element to undergo elastic deformation. The elastic element can recover its elastic deformation under the unwinding of the drive mechanism to drive the slider 22 to slide in the opposite direction along the first direction.

[0055] The first direction is the direction from the bottom of the receiving groove to the opening of the groove. In this embodiment, the driving mechanism is a motor, the pull rope is a steel wire rope, and the elastic element is a spring. The spring is installed inside the guide tube, with the fixed end of the spring fixed to the end of the guide tube away from the bottom of the receiving groove, and the movable end fixed to the end of the sliding column away from the bottom of the receiving groove.

[0056] During the movement of the tool body 31 towards the use position, the motor rotates, pulling the pull rope to wind it up. This causes the sliding member 22 to slide along the first direction on the guide member 21, thereby driving the tool body 31 to extend out of the receiving groove. As the sliding member 22 slides, it pushes the movable end of the spring towards the fixed end, causing the spring to compress and undergo elastic deformation. When the motor stops rotating, the pull rope applies a pulling force to the sliding member 22 along the first direction, while the spring applies a pushing force to the sliding member 22 in the opposite direction of the first direction. The two remain in balance, achieving locking of the tool body 31 in the use position after it extends, thus ensuring the stability of the enlarged well diameter.

[0057] Conversely, as the cutter body 31 moves toward the storage position, the motor rotates, loosening the pull rope. The compressed spring gradually recovers its elastic deformation and pushes the slider 22 to move in the opposite direction of the first direction. The slider 22 then drives the pull rope to unwind, and at the same time drives the cutter body 31 to move into the receiving groove.

[0058] Optionally, the reaming tool also includes a limiting frame 5, which is disposed on the wall of the receiving groove and opposite to the bottom of the receiving groove. Specifically, the limiting frame 5 can be welded to the rotating column 1, with a secure welded connection, or it can be snap-fitted to the rotating column 1, with a snap-fit ​​connection, which facilitates disassembly.

[0059] The cutting module 3 also includes a limiting seat 32 fixedly connected to the tool body 31. The limiting seat 32 is located between the bottom of the receiving groove and the limiting frame 5, and is mounted on the sliding member 22. The limiting seat 32 can move between the bottom of the receiving groove and the limiting frame 5 under the drive of the sliding member 22, so as to drive the tool body 31 to a storage position or a use position. The limiting seat 32 is restricted between the limiting frame 5 and the bottom of the receiving groove, thereby restricting the range of motion of the tool body 31 connected to it, so that the tool body 31 moves within a set range and prevents the tool body 31 from detaching from the rotating column 1. In this embodiment, the limiting seat 32 has a slot, and the sliding member 22 is inserted and engaged in the slot for easy installation.

[0060] In one embodiment, the tool body 31 and the limiting seat 32 are integral structural components, such as those manufactured by welding or integral molding processes, ensuring a reliable connection. In another embodiment, the tool body 31 and the limiting seat 32 are detachably connected structural components, such as those connected by snap-fit ​​or bolts, facilitating disassembly and maintenance.

[0061] Optionally, multiple limiting brackets 5 are provided, and the side of each limiting bracket 5 away from the groove wall of the receiving groove abuts against the periphery of the tool body 31. With multiple limiting brackets 5 abutting against the periphery of the tool body 31, the tool body 31 extends out of or retracts into the receiving groove between the limiting brackets 5, and the tool body 31 is circumferentially fixed and stable, especially during the cutting operation, it is not easy to deviate.

[0062] Reference Figure 1 and Figure 2 As shown, in this embodiment, there are two guide modules 2 and two corresponding limit frames 5, with the guide module 2 mounted on the corresponding limit frame 5. The two sides of the tool body 31 are each connected to a sliding member 22 via a limit seat 32. Driven by the two sliding members 22, the tool body 31 is less prone to deflection. The two limit frames 5 respectively limit the corresponding limit seats 32, further preventing the tool body 31 from deflecting.

[0063] Optionally, the acquisition module 4 also includes a second acquisition module. The second acquisition module is used to acquire the contact pressure information between itself and the limit seat 32. The control module is also used to generate and send a stop command to the drive module based on the contact pressure information, so that the tool body 31 stops at the use position or the storage position. By acquiring the contact pressure between the second acquisition module and the limit seat 32, it is determined whether the tool body 31 has reached the use position or the storage position. The logic is simple, the implementation is convenient, and the accuracy is high.

[0064] Furthermore, the second acquisition module includes a first acquisition submodule and a second acquisition submodule. The first acquisition submodule is located on the side of the limiting frame 5 near the limiting seat 32. The first acquisition submodule can acquire contact pressure information when the limiting seat 32 presses against the limiting frame 5, so as to stop the tool body 31 in the use position. The second acquisition module is located on the bottom of the receiving groove. The second acquisition submodule can acquire contact pressure information when the limiting seat 32 presses against the bottom of the receiving groove, so as to stop the tool body 31 in the storage position.

[0065] In this embodiment, the first acquisition submodule is a piezoelectric chip. When the sliding member 22 drives the limiting seat 32 to move and press against the limiting frame 5, the first acquisition submodule is also squeezed, thereby obtaining contact pressure information based on the squeezing force. The control module in the PLC module retrieves the stop command corresponding to the contact pressure information from the storage module and sends it to the drive module, thereby stopping the sliding member 22 and stopping the tool body 31 in the use position. The rotation of the rotating column 1 will drive the tool body 31 to cut and enlarge the wellbore.

[0066] Similarly, the second acquisition submodule is also a piezoelectric chip. When the sliding member 22 drives the limiting seat 32 to move and press against the bottom of the receiving groove, the second acquisition submodule is also squeezed, thereby obtaining contact pressure information based on the squeezing force. The control module in the PLC module retrieves the stop command corresponding to the contact pressure information from the storage module and sends it to the drive module, thereby stopping the sliding member 22 and stopping the tool body 31 in the storage position. At this time, the tool body 31 is located in the receiving groove and does not contact the peripheral wall of the wellbore, so the wellbore is not cut.

[0067] Optionally, a pressure relief groove 6 is provided on the side wall of the rotating column 1. The pressure relief groove 6 is used to balance the hydraulic or pneumatic pressure at both ends of the rotating column 1. (Refer to...) Figure 1 and Figure 2 As shown, multiple pressure relief grooves 6 extending along the length of the rotating column 1 are provided at both the upper and lower ends of the rotating column 1 to prevent the rotating column 1 from forming a sealed contact with the wellbore, which would affect the hydraulic pressure at both the upper and lower ends of the rotating column 1 and cause the rotating column 1 to jam.

[0068] Optionally, the reaming tool also includes a battery. In this embodiment, the battery is mounted on the limiting frame 5 and is used to power the motor, PLC module, and various piezoelectric chips.

[0069] Optionally, the tool body 31 includes a tool holder and multiple tools, each tool being mounted on the tool holder, which is fixedly connected to the sliding member 22. Each tool is provided with a spray nozzle, a diamond cutting disc, and an alloy cutting post. In this embodiment, the tool holder is a cylindrical structure, and there are three tools in total, all mounted on the end face of the tool holder and evenly distributed in the circumferential direction.

[0070] In hard formations or deep wells, a solid tool holder is preferred to minimize damage from stress during cutting. In shallow wells or where the formation hardness is not high, a hollow tool holder is preferred to reduce the weight of the reaming tool, improve its operability, and lower its cost. The flushing nozzles on the tool can be used to rinse the tool and surrounding slurry, keeping the area around the tool clean and preventing the reaming tool from getting stuck in the wellbore. Diamond cutting discs have extremely high hardness, excellent reaming performance, and excellent wear resistance, resulting in a long service life and avoiding frequent maintenance and replacement.

[0071] The drilling reaming tool provided in this embodiment has few components and a simple structure. The switching between the use position and the storage position of the tool body 31 does not need to be achieved by throwing a ball to pressurize. It can be achieved simply by adjusting the pressure parameters of the drilling fluid and sending a command to the motor through the PLC module, so that the motor drives the sliding part 22, thereby moving the tool body 31. The use and disuse of the tool body 31 can be switched freely, making construction convenient.

[0072] This embodiment also provides a drilling reaming method, which can be applied to the above-mentioned drilling reaming tool to carry out wellbore reaming operations.

[0073] S1. Before entering the well, adjust the pressure parameters of the drilling fluid and test the movement of the cutter body 31 to ensure that the reaming tool can work normally.

[0074] S2. Lower the reaming tool into the wellbore;

[0075] S3, Rotate column 1;

[0076] S4. Adjust the drilling fluid pressure parameters so that the cutter body 31 extends out of the receiving tank at the first speed until the cutter body 31 stops in the use position.

[0077] S5. Keep it up immediately, such as within 5 minutes;

[0078] S6. Drill down until the predetermined depth is reached;

[0079] S7. Adjust the drilling fluid pressure parameters to retract the cutter body 31 into the receiving groove until the cutter body 31 stops in the storage position, thus completing the hole enlargement work.

[0080] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A drilling reaming tool, characterized in that, include: A rotating column (1) is configured to be connected to a rotating rod, and a receiving groove is provided on the side wall of the rotating column (1); The guide module (2) includes a guide (21) and a slider (22). The guide (21) is disposed on the rotating column (1), and the slider (22) is slidably disposed on the guide (21). The cutting module (3) includes a tool body (31) fixedly connected to the sliding member (22). The sliding member (22) can slide to drive the tool body (31) to extend out of the receiving groove to obtain a use position, or drive the tool body (31) to retract into the receiving groove to obtain a storage position. A driving module is connected to the slider (22) and is used to drive the slider (22) to slide. The acquisition module (4) includes a first acquisition module for acquiring the pressure parameters of the drilling fluid; The control module is used to generate a start command based on the pressure parameters and send it to the drive module to drive the slider (22) to slide. The limiting frame (5) is disposed on the wall of the receiving groove and opposite to the bottom of the receiving groove. The cutting module (3) also includes a limiting seat (32) fixedly connected to the tool body (31). The limiting seat (32) is located between the bottom of the receiving groove and the limiting frame (5) and is disposed on the sliding member (22). The limiting seat (32) can move between the bottom of the receiving groove and the limiting frame (5) under the drive of the sliding member (22) so as to drive the tool body (31) to obtain the storage position or the use position. The drive module includes a drive mechanism, a pull rope, and an elastic element. One end of the pull rope is connected to the output end of the drive mechanism, and the other end is connected to the sliding element (22). The elastic element is connected to the sliding element (22). The pull rope can pull the sliding element (22) to slide along a first direction under the winding of the drive mechanism, and cause the elastic element to undergo elastic deformation. The elastic element can recover its elastic deformation under the unwinding of the drive mechanism to drive the sliding element (22) to slide in the opposite direction along the first direction.

2. The reaming tool according to claim 1, characterized in that, The limiting frame (5) is provided in multiple ways, and the side of each limiting frame (5) away from the groove wall of the receiving groove abuts against the periphery of the tool body (31).

3. The reaming tool according to claim 1, characterized in that, The acquisition module (4) also includes a second acquisition module, which is used to acquire contact pressure information between itself and the limiting seat (32). The control module is also used to generate and send a stop command to the drive module based on the contact pressure information, so that the tool body (31) stops at the use position or the storage position.

4. The reaming tool according to claim 3, characterized in that, The second acquisition module includes a first acquisition submodule and a second acquisition submodule. The first acquisition submodule is located on the side of the limiting frame (5) near the limiting seat (32). The first acquisition submodule can acquire the contact pressure information when the limiting seat (32) presses against the limiting frame (5) so that the tool body (31) stops in the use position. The second acquisition module is located on the bottom of the receiving groove. The second acquisition submodule can acquire the contact pressure information when the limiting seat (32) presses against the bottom of the receiving groove so that the tool body (31) stops in the storage position.

5. The reaming tool according to claim 1, characterized in that, One of the sliding member (22) and the guide member (21) is fitted over the other.

6. The reaming tool according to claim 1, characterized in that, The rotating column (1) has a pressure relief groove (6) on its side wall. The pressure relief groove (6) is used to balance the hydraulic or air pressure at both ends of the rotating column (1).

7. The reaming tool according to claim 1, characterized in that, The tool body (31) includes a tool holder and a plurality of tools. Each tool is disposed on the tool holder, and the tool holder is fixedly connected to the sliding member (22). Each tool is provided with a spray nozzle, a diamond cutting blade and an alloy cutting column.

8. A method for reaming while drilling, characterized in that, The tool used in drilling reaming as described in any one of claims 1-7 comprises: S1. Before entering the well, adjust the pressure parameters of the drilling fluid and test the movement of the cutter body (31); S2. Lower the reaming tool into the wellbore; S3. Rotate the rotating column (1); S4. Adjust the pressure parameters of the drilling fluid so that the cutter body (31) extends out of the receiving groove at the first speed until the cutter body (31) stops at the use position. S5. Stay on the first line; S6. Drill down until the predetermined depth is reached; S7. Adjust the drilling fluid pressure parameters to retract the cutter body (31) into the receiving tank until the cutter body (31) stops in the storage position.

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