Integrated tool suitable for continuous pipe drift diameter and blanking plug delivery and using method of integrated tool

Abstract

The invention discloses a continuous pipe drift diameter and blanking plug delivery integrated tool and a using method thereof, and belongs to the technical field of oil and gas field development. The invention provides an integrated tool which comprises a hydraulic assembly, a connecting assembly and a pressure adjusting assembly, hydraulic design is adopted, inner diameter drifting can be conducted on a continuous pipe by being matched with drift diameter gauges with different diameters, plugging operation in the continuous pipe is achieved by being matched with a plug (in a rotary setting mode and a lifting setting mode), it is guaranteed that the plug bears the pressure of 35 MPa, and the plugging efficiency is improved. The requirement for plugging in the safe lifting pipe under pressure is completely met, and conditions are created for lifting a 2 ''continuous gas production pipe column under pressure.

Description

Technical Field

[0001] The present invention relates to an integrated tool for the internal diameter inspection and plug delivery of coiled tubing and its usage method, and particularly to a process technology for plugging a continuous gas production string with a mechanical plug, belonging to the technical field of oil and gas field development. Background Art

[0002] In recent years, with the change of gas well completion methods, the construction of 2" continuous gas production strings has gradually increased. For example, in Changqing Oilfield, the cumulative number of wells with 2" coiled tubing gas production strings has exceeded 700 well-times, and the earliest installed strings have been in use for more than 3 years. Due to problems such as scaling, wax deposition, and sand burial during production, the workload of subsequent workover operations with pressure will increase year by year. After 2 - 3 years of production, some wells need to pull out the 2" continuous gas production string due to problems such as the failure of the throttle valve and the inability to insert the plunger due to tubing scaling.

[0003] Conventionally, after circulating and killing the well, the 2" continuous gas production string in the well is pulled out. Due to the long production time and formation voidage, a large amount of kill fluid is used and the backflow is difficult, which pollutes the reservoir and seriously affects the later production capacity. Currently, replacing the tubing with pressure is the best means to solve the above problems, but the prerequisite for pulling out the 2" continuous gas production string with pressure is to effectively plug the inside of the tubing.

[0004] Therefore, a tool is needed that can deliver the internal diameter gauge and internal plugging tool for the 2" continuous gas production string under pressure. Summary of the Invention

[0005] In view of the small internal diameter of the existing 2" continuous gas production string, long production time in the well, and the reduction of the internal diameter due to scaling and wax deposition in the tubing, which further increases the difficulty of internal plugging, the present invention proposes an integrated tool for the internal diameter inspection and plug delivery of coiled tubing and its usage method to solve the problems of tubing internal diameter and plugging.

[0006] In this technical solution, by using this tool in cooperation with internal diameter gauges of different diameters and mechanical plugs with different working principles, the operations of internal diameter inspection and plug delivery of coiled tubing are realized, effectively achieving the internal plugging of the 2" continuous gas production string, creating conditions for pulling out the 2" continuous gas production string with pressure.

[0007] To achieve the above technical objectives, the following technical solutions are proposed: The first objective of this technical solution is to provide: an integrated tool for the internal diameter inspection and plug delivery of coiled tubing, the integrated tool includes a hydraulic component, a connection component, and a pressure regulating component. The hydraulic component includes a hydraulic cylinder, a piston, and a piston rod. The piston is sleeved inside the hydraulic cylinder. One end of the piston rod is connected to the piston, and the other end extends outside the hydraulic cylinder. A hydraulic interface Ⅰ is provided on the hydraulic cylinder. A tool joint is sleeved at the bottom of the piston rod. The connecting component includes a swivel joint, a union joint, and a union (such as CB34 union). One end of the swivel joint is sleeved outside the bottom of the hydraulic cylinder, and the other end is sleeved outside the piston rod. A hydraulic cavity Ⅰ is formed between the inner wall of the swivel joint, the outer wall of the hydraulic cylinder, and the outer wall of the piston rod. A seal Ⅰ for sealing the hydraulic cavity Ⅰ is provided between the lower part of the swivel joint and the piston rod; the union joint is sleeved outside the piston rod, and the union joint is located below the swivel joint. A hydraulic cavity Ⅱ is formed between the inner wall of the union joint and the outer wall of the piston rod. A seal Ⅱ for sealing the hydraulic cavity Ⅱ is provided between the upper part of the union joint and the piston rod; the union is sleeved outside the lower part of the union joint. The pressure regulating component includes a pressure measuring pipe communicated with the hydraulic cavity Ⅱ, and a valve Ⅰ and a pressure gauge are arranged on the pressure measuring pipe. The pressure regulating component further includes a hydraulic pipeline Ⅰ and a hydraulic pipeline Ⅱ. One end of the hydraulic pipeline is communicated with the hydraulic cavity Ⅱ, and the other end is communicated with the hydraulic cavity Ⅰ. A valve Ⅱ and a valve Ⅲ are arranged on the hydraulic pipeline Ⅰ, and a hydraulic interface Ⅲ is arranged on the hydraulic pipeline Ⅰ near the valve Ⅱ; a valve Ⅳ and a hydraulic interface Ⅱ are arranged on the hydraulic pipeline Ⅱ.

[0008] Furthermore, a pulling member (such as a lifting ring) is arranged on the cylinder head of the hydraulic cylinder. This setting facilitates the crane to move this integrated tooling.

[0009] Furthermore, an operation window is provided between the swivel joint and the union joint. If the through-diameter process encounters resistance, a special tool can be used to rotate the piston rod at the operation window to remove blockages such as scale and wax in the pipe until it smoothly reaches the designed position.

[0010] Furthermore, an operation window support sleeve is arranged in the operation window. Among them, the setting of the operation window support sleeve connects the swivel joint and the union joint and reserves a space (i.e., inside the operation window) for rotating the piston rod. When using a rotary packer plug, a special tool (such as a chain wrench) can be used to rotate the piston rod to seat the plug, and continue to rotate to cut off the shear pin of the plug to complete the seating.

[0011] Furthermore, a mechanical release is arranged between the piston rod and the tool joint, and the mechanical release is sleeved on the lower part of the union joint. The mechanical release plays a safety role in construction. Mainly to prevent the tool from failing during the through-diameter or plugging process. When it is blocked and the tool string cannot be retrieved, the shear pin of the mechanical release can be cut off by increasing the hydraulic upward force to retrieve the piston rod; furthermore, the replacement of the through-diameter gauge and the plug can be realized through the tool joint.

[0012] The second objective of this technical solution is to provide: a method for using an integrated tooling applicable to coiled tubing through-diameter and plug delivery for coiled tubing through-diameter, including the following steps: S1: Install a reducing flange on the upper part of the wellhead gate valve and connect a union (such as CB34 union) to the reducing flange; S2: Connect a drift gauge to the tool joint, and then connect the union in the tooling to the union in step S1 (specifically, the movement of the tooling at the wellhead gate valve can be achieved by the lifting of a crane); S3: Close valve II, valve III, and valve IV, open valve I, connect a hydraulic pump to hydraulic interface I, conduct a pressure test on the tooling, and at the same time observe the pressure drop through a pressure gauge; S4: After the pressure test is qualified, open the wellhead gate valve and continuously observe the pressure in the well through a pressure gauge; after the pressure in the well is stable, close valve I; S5: Connect the hydraulic pump to hydraulic interface I and conduct hydraulic pressure boosting to form a hydraulic pressure; the hydraulic pressure pushes the piston rod downward to send the drift gauge to a predetermined position in the well; S6: Lift out the drift gauge, connect the hydraulic pump to hydraulic interface II, open valve IV, conduct hydraulic pressure boosting to form a hydraulic pressure; the hydraulic pressure pushes the piston rod upward to lift the drift gauge above the wellhead gate valve; then, close the wellhead gate valve, disassemble the hydraulic pump connected to hydraulic interface I; open valve I to relieve pressure, disconnect from the connection between the union and the reducing flange, remove the tooling, and inspect the drift gauge.

[0013] Further, in step S4, when the pressure test value is not less than the pressure in the well and the pressure drop in 30 minutes is less than 0.5 MPa, it is qualified.

[0014] Further, during the drifting process in step S5, if there is an obstruction, a special tool (such as a chain wrench) can be used to rotate the piston rod at the operation window position to remove the blockage in the coiled tubing (such as scale, wax, etc.) until it smoothly reaches the predetermined position.

[0015] The third objective of this technical solution is to provide: a method for using an integrated tooling applicable to coiled tubing drifting and plug deliver, for plug delivery, including the following steps: S1: Install a reducing flange on the upper part of the wellhead gate valve; S2: Connect a plug to the tool joint, and then connect the union in the tooling to the reducing flange in step S1 (specifically, the movement of the tooling at the wellhead gate valve can be achieved by the lifting of a crane); S3: Close valve II, valve III, and valve IV, open valve I, connect a hydraulic pump to hydraulic interface I, conduct a pressure test on the tooling, and at the same time observe the pressure drop through a pressure gauge; S4: After the pressure test is qualified, open the wellhead gate valve and continuously observe the pressure in the well through a pressure gauge; after the pressure in the well is stable, close valve I; S5: Connect the hydraulic pump to hydraulic interface I, perform hydraulic pressure testing to form hydraulic pressure; the hydraulic pressure pushes the piston rod downward, and the plug is sent to the predetermined position in the well. S6: If the inserted plug is a rotary setting type plug, when lowering the plug to the predetermined position in the well, use a special tool to perform a rotary operation on the piston rod at the operation window position to set the plug, and continue to rotate to cut off the shear pin of the plug, and the setting is completed. If the inserted plug is a lifting setting type plug, when lowering the plug to the predetermined position in the well, connect the hydraulic pump to hydraulic interface II, open valve IV, perform hydraulic pressure testing to form hydraulic pressure; the hydraulic pressure pushes the piston rod upward to set the plug, and the hydraulic pump continues to pressurize, and the pulling force of the piston rod continues to rise until the shear pin of the plug is cut off, and the setting is completed. S7: The hydraulic pump continues to pressurize, the piston rod extends above the wellhead gate valve, open valve I, relieve pressure through hydraulic interface I, and verify the plugging effect. S8: Close the wellhead gate valve, disassemble the hydraulic pump connected to hydraulic interface I and hydraulic interface II, disconnect from the connection between the union and the reducer flange, and remove the tooling.

[0016] Further, in step S4, it is qualified when the pressure test value is not less than the well pressure and the pressure drop in 30 minutes is less than 0.5 MPa.

[0017] In this technical solution, the involved valve I, valve II, valve III, valve IV and the wellhead gate valve can be manual valves or electric valves, that is, manual or electric is adopted for opening or closing, thereby improving the operation flexibility and enabling selection according to actual needs. For the hydraulic pump, a manual hydraulic pump or an electric hydraulic pump can be adopted.

[0018] In this technical solution, the position relationships such as "inside", "the other end", "one end", "above", "bottom", "outside", "lower part", "between", "below", etc. are defined according to the actual use conditions, which are common terms in this technical field and are also common terms for those skilled in the art during actual use.

[0019] Adopting this technical solution brings the following beneficial technical effects: First, the present invention uses hydraulic pressure for internal sizing, insertion and removal of the plug, is processed according to API 6A standard, and both the internal sizing and the plug are sent using a hydraulic pump, realizing the sizing and plug delivery operations for the coiled tubing, effectively achieving the internal plugging of the 2" continuous gas production string, and creating conditions for the pressure-assisted removal of the 2" continuous gas production string. 2. The effective lifting and lowering stroke of this tool is 2.5m, which fully meets the requirements of the on-site KQ52-35 and KQ65-70 wellhead connection and the internal diameter and plugging operation of the 2″ continuous gas production string in the well. The lifting load and injection load can ensure that the delivery tool is within the safe working range; 3. This tool can withstand a pressure of 35MPa and meet the requirements for internal plugging during safe lifting of pipes under pressure. It adopts an integrated design and is installed on the wellhead gate valve during operation. The use of a hydraulic pump can realize the lowering and lifting of the diameter gauge, scraper, and plug. The designed effective lowering length is 2.5m, which can be lowered to 1m below the wellhead hanger to meet the requirements for the setting of the bridge plug. In addition, in order to solve the problem that the plug cannot be lowered due to shrinkage caused by scaling and wax deposition, an operating window is designed in the middle of the tool. Special tools can be used to realize the rotation of the delivery tool. If the lowering is blocked, the inner wall of the pipe column can also be scraped by rotation to make its diameter meet the requirements of the subsequent plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention (I); Figure 2 It is a structural schematic diagram of the present invention (II); Figure 3 It is a schematic diagram of the installation process of the present invention; In the figure, 1, pulling member, 2, cylinder head, 3, hydraulic interface Ⅰ, 4, piston, 5, hydraulic cylinder, 6, rotary joint, 7, valve Ⅳ, 8, hydraulic interface Ⅱ, 9, valve Ⅲ, 10, piston rod, 11, operating window support sleeve, 12, union joint, 13, valve Ⅰ, 14, pressure gauge; 15, hydraulic interface Ⅲ; 16, valve Ⅱ; 17, union; 18, mechanical release; 19, tool joint; 20, diameter gauge, 21, reducing flange, 22, wellhead gate valve, 23, seal Ⅰ, 24, hydraulic cavity Ⅰ, 25, hydraulic cavity Ⅱ, 26, hydraulic pipeline Ⅰ, 27, seal Ⅱ, 28, hydraulic pipeline Ⅱ. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1 This embodiment provides: an integrated tool suitable for the internal diameter of coiled tubing and the delivery of a plugging device. The integrated tool includes a hydraulic component, a connection component, and a pressure regulating component. The hydraulic component includes a hydraulic cylinder 5, a piston 4, and a piston rod 10. The piston 4 is sleeved inside the hydraulic cylinder 5. One end of the piston rod 10 is connected to the piston 4, and the other end extends outside the hydraulic cylinder 5. A hydraulic interface I 3 is provided on the hydraulic cylinder 5. A tool joint 19 is sleeved at the bottom of the piston rod 10. The connection component includes a swivel joint 6, a union joint 12, and a union 17. One end of the swivel joint 6 is sleeved outside the bottom of the hydraulic cylinder 5, and the other end is sleeved outside the piston rod 10. A hydraulic cavity I 24 is formed between the inner wall of the swivel joint 6, the outer wall of the hydraulic cylinder 5, and the outer wall of the piston rod 10. A seal I 23 for sealing the hydraulic cavity I 24 is provided between the lower part of the swivel joint 6 and the piston rod 10. The union joint 12 is sleeved outside the piston rod 10, and the union joint 12 is located below the swivel joint 6. A hydraulic cavity II 25 is formed between the inner wall of the union joint 12 and the outer wall of the piston rod 10. A seal II 27 for sealing the hydraulic cavity II 25 is provided between the upper part of the union joint 12 and the piston rod 10. The union 17 is sleeved outside the lower part of the union joint 12. The pressure regulating component includes a pressure measuring pipe communicated with the hydraulic cavity II 25. A valve I 13 and a pressure gauge 14 are provided on the pressure measuring pipe. The pressure regulating component further includes a hydraulic pipeline I 26 and a hydraulic pipeline II 28. One end of the hydraulic pipeline is communicated with the hydraulic cavity II 25, and the other end is communicated with the hydraulic cavity I 24. A valve II 16 and a valve III 9 are provided on the hydraulic pipeline I 26. A hydraulic interface III 15 is provided on the hydraulic pipeline I 26 near the valve II 16. A valve IV 7 and a hydraulic interface II 8 are provided on the hydraulic pipeline II 28.

[0023] Among them, an integrated hydraulic design is adopted, and hydraulics is used for the internal diameter passing, the lowering and lifting of the plugging device. That is, the internal diameter of the coiled tubing can be achieved by cooperating with different diameter gauges 20, and the internal plugging operation of the coiled tubing can be achieved by cooperating with the upward-setting plug and the rotary-setting plug.

[0024] In addition, the technical parameters involved in this integrated tool include: effective stroke for lowering and lifting: 2.5 m, rated working pressure: 35 MPa, lifting load: 8 tons, injection load: 1.5 tons; material grade: EE-NL, rated temperature: -18 °C - 121 °C (U grade), specification grade: PSL 3G, performance grade: PSI.

[0025] Embodiment 2 On the basis of Embodiment 1, this embodiment further limits the hydraulic cylinder 5 to further illustrate this technical solution.

[0026] A pulling member 1, such as a lifting ring, is provided on the cylinder head 2 of the hydraulic cylinder 5. This setting facilitates the movement of the integral tooling by a crane.

[0027] Embodiment 3 On the basis of Embodiments 1-2, in order to further ensure the removal of blockages such as scale and paraffin wax in the pipe and finally smoothly reach the designed position, this embodiment further defines: An operation window is provided between the swivel joint 6 and the union joint 12. If the through-diameter process encounters resistance, a special tool can be used at the operation window to rotate the piston rod 10 to remove blockages such as scale and paraffin wax in the pipe until it smoothly reaches the designed position.

[0028] In addition, an operation window support sleeve 11 is provided in the operation window. Among them, the setting of the operation window support sleeve 11 connects the swivel joint 6 and the union joint 12 and reserves a space (i.e., inside the operation window) for rotating the piston rod 10. When using the rotary packer plug, a special tool (such as a chain wrench) can be used to rotate the piston rod 10 to seat the plug, and continue to rotate to cut off the shear pin of the plug to complete the seating.

[0029] An operation window is designed in the middle of the tooling. By using a special tool, the piston rod 10 can be rotated to transmit a torque of 200 N·m, thereby driving the lower through-diameter gauge 20, scraper, and plug to rotate, realizing scraping and plugging inside the coiled tubing.

[0030] Embodiment 4 On the basis of Embodiments 1-3, in order to ensure that the tool joint 19 can be smoothly replaced after multiple uses, this embodiment further defines: A mechanical release 18 is provided between the piston rod 10 and the tool joint 19.

[0031] Embodiment 5 On the basis of Embodiments 1-4, this embodiment provides: A usage method of an integral tooling applicable to coiled tubing through-diameter and plug delivery for coiled tubing through-diameter.

[0032] It includes the following steps: S1: Install a reducing flange 21 above the wellhead gate valve 22, and connect a union 17 to the reducing flange 21; S2: Connect a through-diameter gauge 20 to the tool joint 19, and then connect the union 17 in the tooling with the union 17 in Step S1 (specifically, the movement of the tooling at the wellhead gate valve 22 can be realized by the lifting of a crane); S3: Close valve II 16, valve III 9, and valve IV 7, open valve I 13, connect a hydraulic pump to hydraulic interface I 3, and pressure-test the tooling. Wait until the pressure test value is not less than the well pressure and the pressure drop in 30 minutes is less than 0.5 Mpa; at the same time, observe the pressure drop through the pressure gauge 14; S4: After the pressure test is qualified, open the wellhead gate valve 22, and continuously observe the pressure in the well through the pressure gauge 14; after the pressure in the well is stable, close the valve I 13; S5: Connect the hydraulic pump to the hydraulic interface I 3, conduct hydraulic pressure testing to form a hydraulic pressure; the hydraulic pressure pushes the piston rod 10 to move downward, and send the drift 20 to the predetermined position in the well; If there is a blockage, a special tool can be used to rotate the piston rod 10 at the operation window position to remove the blockage in the coiled tubing (such as scale, wax, etc.) until it smoothly reaches the predetermined position; S6: Lift out the drift 20, connect the hydraulic pump to the hydraulic interface II 8, open the valve IV 7, conduct hydraulic pressure testing to form a hydraulic pressure; the hydraulic pressure pushes the piston rod 10 to move upward, and lift the drift 20 above the wellhead gate valve 22; then, close the wellhead gate valve 22, disassemble the hydraulic pump connected to the hydraulic interface I 3; open the valve I 13 to relieve the pressure, disconnect from the connection between the union 17 and the reducer flange 21, remove the tooling, and inspect the drift 20.

[0033] Example 6 Based on Examples 1-4, this example provides: A method for using an integrated tooling suitable for coiled tubing drift and plug delivery to perform plug delivery.

[0034] The steps are as follows: S1: Install the reducer flange 21 above the wellhead gate valve 22; S2: Connect the plug to the tool joint 19, and then connect the union 17 in the tooling with the reducer flange 21 in step S1 (specifically, the movement of the tooling at the wellhead gate valve 22 can be realized by the lifting of a crane); S3: Close the valve II 16, valve III 9 and valve IV 7, open the valve I 13, connect the hydraulic pump to the hydraulic interface I 3 to conduct a pressure test on the tooling. Wait until the pressure test value is not less than the pressure in the well and the pressure drop in 30 minutes is less than 0.5 MPa; at the same time, observe the pressure drop through the pressure gauge 14; S4: After the pressure test is qualified, open the wellhead gate valve 22, and continuously observe the pressure in the well through the pressure gauge 14; after the pressure in the well is stable, close the valve I 13; S5: Connect the hydraulic pump to the hydraulic interface I 3, conduct hydraulic pressure testing to form a hydraulic pressure; the hydraulic pressure pushes the piston rod 10 to move downward, and send the plug to the predetermined position in the well; S6: If the inserted plug is a rotary setting type plug, when lowering the plug to the predetermined position in the well, use a special tool to rotate the piston rod 10 at the operation window position to set the plug, continue to rotate, cut off the shear pin of the plug, and the setting is completed; If the plugging device lowered is an upward-pulling and setting type plugging device, when the plugging device is lowered to the predetermined position in the well, connect the hydraulic pump to the hydraulic interface II 8, open the valve IV 7, and apply hydraulic pressure to form a hydraulic pressure; the hydraulic pressure pushes the piston rod 10 to move upward to set the plugging device. The hydraulic pump continues to apply pressure, and the pulling force of the piston rod 10 continuously rises until the shear pin of the plugging device is cut off and the setting is completed; S7: The hydraulic pump continues to apply pressure, the piston rod 10 extends to above the wellhead gate valve 22, open the valve I 13, relieve the pressure through the hydraulic interface I 3, and verify the plugging effect; S8: Close the wellhead gate valve 22, remove the hydraulic pump connected to the hydraulic interface I 3 and the hydraulic interface II 8, disconnect from the connection between the union (17) and the reducer flange (21), and remove the tooling.

[0035] The above are the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated tool applicable to the through-diameter of coiled tubing and the delivery of a plug, characterized in that The integrated tooling includes a hydraulic component, a connection component and a pressure regulating component. The hydraulic component includes a hydraulic cylinder (5), a piston (4) and a piston rod (10). The piston (4) is sleeved inside the hydraulic cylinder (5). One end of the piston rod (10) is connected to the piston (4), and the other end extends outside the hydraulic cylinder (5). A hydraulic interface I (3) is provided on the hydraulic cylinder (5). A tool joint (19) is sleeved at the bottom of the piston rod (10). The connection component includes a swivel joint (6), a union joint (12) and a union (17). One end of the swivel joint (6) is sleeved outside the bottom of the hydraulic cylinder (5), and the other end is sleeved outside the piston rod (10). A hydraulic cavity I (24) is formed between the inner wall of the swivel joint (6), the outer wall of the hydraulic cylinder (5) and the outer wall of the piston rod (10). A seal I (23) for sealing the hydraulic cavity I (24) is provided between the lower part of the swivel joint (6) and the piston rod (10). The union joint (12) is sleeved outside the piston rod (10), and the union joint (12) is located below the swivel joint (6). A hydraulic cavity II (25) is formed between the inner wall of the union joint (12) and the outer wall of the piston rod (10). A seal II (27) for sealing the hydraulic cavity II (25) is provided between the upper part of the union joint (12) and the piston rod (10). The union (17) is sleeved outside the lower part of the union joint (12). The pressure regulating component includes a pressure measuring pipe communicated with the hydraulic cavity II (25). A valve I (13) and a pressure gauge (14) are provided on the pressure measuring pipe. The pressure regulating component further includes a hydraulic pipeline I (26) and a hydraulic pipeline II (28). One end of the hydraulic pipeline is communicated with the hydraulic cavity II (25), and the other end is communicated with the hydraulic cavity I (24). A valve II (16) and a valve III (9) are provided on the hydraulic pipeline I (26). A hydraulic interface III (15) is provided on the hydraulic pipeline I (26) near the valve II (16). A valve IV (7) and a hydraulic interface II (8) are provided on the hydraulic pipeline II (28).

2. The integrated tooling applicable to coiled tubing diameter and plug delivery according to claim 1, wherein A pulling member (1) is provided on the cylinder head (2) of the hydraulic cylinder (5).

3. The integrated tooling applicable to the continuous pipe diameter and the plug delivery according to claim 1, wherein, An operation window is provided between the swivel joint (6) and the union joint (12).

4. The integrated tooling applicable to the coiled tubing diameter and the plug delivery according to claim 3, characterized in that, An operation window support sleeve (11) is provided inside the operation window.

5. The integrated tooling applicable to the continuous pipe diameter and the plug delivery according to claim 1, characterized in that, A mechanical release (18) is provided between the piston rod (10) and the tool joint (19).

6. A method for using an integrated tool applicable to coiled tubing diameter and plug delivery according to any one of claims 1-5, characterized in that, Performing coiled tubing sizing includes the following steps: S1: Install a reducing flange (21) above the wellhead gate valve (22), and connect a union to the reducing flange (21). S2: Connect a caliper (20) to the tool joint (19), and then connect the union (17) in the tooling to the union in step S1. S3: Close the valve II (16), the valve III (9) and the valve IV (7), open the valve I (13), connect a hydraulic pump to the hydraulic interface I (3) to perform a pressure test on the tooling, and at the same time, observe the pressure drop through the pressure gauge (14). S4: After the pressure test is qualified, open the wellhead gate valve (22), continuously observe the pressure in the well through the pressure gauge (14); after the pressure in the well is stable, close the valve I (13). S5: Connect the hydraulic pump to hydraulic interface Ⅰ (3), perform hydraulic pressure boosting to form hydraulic pressure; the hydraulic pressure pushes the piston rod (10) downward to send the drift gauge (20) to a predetermined position in the well. S6: After the drifting is completed, connect the hydraulic pump to hydraulic interface Ⅱ (8), open valve Ⅳ (7), perform hydraulic pressure boosting to form hydraulic pressure; the hydraulic pressure pushes the piston rod (10) upward to lift the drift gauge (20) above the wellhead gate valve (22); then, close the wellhead gate valve (22), remove the hydraulic pump connected to hydraulic interface Ⅰ (3); open valve Ⅰ (13) to relieve pressure, disconnect from the connection between the union and the reducer flange (21), remove the tooling, and inspect the drift gauge (20).

7. The usage method of the integrated tooling applicable to coiled tubing sizing and plug delivery according to claim 6, characterized in that, In step S4, the pressure to be tested shall not be less than the well pressure, and the pressure drop within 30 min shall be less than 0.5 MPa for it to be qualified.

8. The method of using the integrated tooling applicable to the through-diameter of coiled tubing and the delivery of plugs according to claim 6, characterized in that, During the drifting process in step S5, if there is resistance, a special tool can be used to rotate the piston rod (10) at the operation window position to remove the blockage in the coiled tubing until it smoothly reaches the predetermined position.

9. A method for using an integrated tool for coiled tubing sizing and plug delivery according to any one of claims 1-5, characterized in that, The plug delivery is carried out, including the following steps: S1: Install a reducer flange (21) above the wellhead gate valve (22). S2: Connect the plug to the tool joint (19), and then connect the union (17) in the tooling to the reducer flange (21) in step S1. S3: Close valve Ⅱ (16), valve Ⅲ (9), and valve Ⅳ (7), open valve Ⅰ (13), connect the hydraulic pump to hydraulic interface Ⅰ (3) to perform a pressure test on the tooling, and at the same time, observe the pressure drop through the pressure gauge (14). S4: After the pressure test is qualified, open the wellhead gate valve (22), continuously observe the well pressure through the pressure gauge (14); after the well pressure stabilizes, close valve Ⅰ (13). S5: Connect the hydraulic pump to hydraulic interface Ⅰ (3), perform hydraulic pressure boosting to form hydraulic pressure; the hydraulic pressure pushes the piston rod (10) downward to send the plug to a predetermined position in the well. S6: If the inserted plug is a rotary setting plug, when lowering the plug to a predetermined position in the well, use a special tool to rotate the piston rod (10) at the operation window position to set the plug, continue to rotate to cut off the shear pin of the plug, and the setting is completed. If the inserted plug is a pull-up setting plug, when lowering the plug to a predetermined position in the well, connect the hydraulic pump to hydraulic interface Ⅱ (8), open valve Ⅳ (7), perform hydraulic pressure boosting to form hydraulic pressure; the hydraulic pressure pushes the piston rod (10) upward to set the plug, the hydraulic pump continues to boost pressure, and the pulling force of the piston rod (10) continuously rises until the shear pin of the plug is cut off and the setting is completed. S7: The hydraulic pump continues to boost pressure, the piston rod (10) rises to above the wellhead gate valve (22), open valve Ⅰ (13), relieve pressure through hydraulic interface Ⅰ (3), and verify the plugging effect. S8: Close the wellhead gate valve (22), remove the hydraulic pumps connected to hydraulic interface Ⅰ (3) and hydraulic interface Ⅱ (8), disconnect from the connection between the union (17) and the reducer flange (21), and remove the tooling.

10. The method of using an integrated tooling applicable to coiled tubing diameter and plug delivery according to claim 9, characterized in that, In step S4, the pressure to be tested is not less than the well pressure, and the pressure drop within 30 minutes is less than 0.5 MPa, which is considered qualified.

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