Chain type transverse oil pipe drift diameter inspection device

Abstract

The invention relates to a chain type transverse oil pipe drift diameter inspection device, and belongs to the technical field of workover treatment. The device comprises a rack, a storage barrel and a guide assembly which are installed on a base, the storage barrel is used for storing the pipe passing gauge, a chain wheel disc is installed on the rack, a single-side rigid chain is wound around the chain wheel disc, the chain wheel disc is connected with a driven chain wheel, the driven chain wheel is in linkage with an auxiliary chain wheel and a driving chain wheel through a chain, and the auxiliary chain wheel is connected with the guide assembly. The motor drives the chain wheel disc and the auxiliary chain wheel to rotate while driving the driving chain wheel to rotate, and then the single-side rigid chain is driven to push the pipe passing gauge to conduct pipe passing operation under guiding of the guiding assembly. The motor is controlled to rotate forwards and backwards through the PLC, then the rigid chain on the single side drives the pipe passing gauge to move, automatic pushing and returning of the pipe passing gauge are achieved, manual operation is not needed, and the labor intensity is reduced.

Description

Technical Field

[0001] This invention relates to a chain-type transverse tubing diameter inspection device, belonging to the field of well workover technology. Background Technology

[0002] Before being lowered into the well, the tubing used in oilfield workover operations must undergo an inner diameter inspection. This is typically done by using a gauge to check the tubing from one end to the other. If the gauge passes through, the tubing's inner diameter is considered acceptable; otherwise, it is considered unacceptable. Currently, gravity-based tubing cleaning is the most common method. This involves manually inserting the gauge into the tubing, pulling it up, and allowing it to slide down the inner wall into a pulley under gravity. The gauge is then manually retrieved and placed into the next tubing, repeating the process. This method poses a safety hazard, potentially injuring personnel on the surface. Furthermore, this existing method is unsuitable for automated workover equipment to automate tubing cleaning operations.

[0003] A search revealed a utility model patent with patent authorization announcement number CN218324842U, which discloses a pipe-clearing device for oil well workover. The device includes a frame and a pipe gauge. The frame is a horizontal structure, with a tubing placement section at the top. An internal slide rail houses a flexible shaft. A drive disc mechanism is located at one end of the frame, comprising a drive disc frame and a rotatable drive disc mounted on the frame. One end of the flexible shaft winds around the lower part of the drive disc to its upper part and connects to the pipe gauge. Multiple clamping rollers are arranged along the outer periphery of the drive disc on the drive disc frame, and the flexible shaft is located between the drive disc and the clamping rollers. This device occupies a large area and incurs high relocation and installation costs, making it an undesirable solution for automated pipe-clearing operations in automated well workover equipment. Summary of the Invention

[0004] This invention provides a chain-type transverse tubing diameter inspection device. This invention effectively solves the safety hazard of injury during well workover operations by allowing tubing to pass through, making tubing string installation safer and more efficient. It can also be used in automated well workover operations to solve the problem of tubing not passing through during automated operations.

[0005] The technical solution adopted in this invention is a chain-type transverse oil pipe diameter inspection device, including a frame, a storage cylinder, and a guide assembly mounted on a base. The storage cylinder is used to store the pipe gauge. A sprocket is mounted on the frame, and a single-sided rigid chain is wound on the sprocket. The sprocket is connected to a driven sprocket, which is linked to an auxiliary sprocket and a driving sprocket via a chain. The auxiliary sprocket is connected to the guide assembly. While the motor drives the driving sprocket to rotate, it indirectly drives the sprocket and the auxiliary sprocket to rotate. Thus, the single-sided rigid chain pushes the pipe gauge to perform pipe cleaning operations under the guidance of the guide assembly.

[0006] As a further embodiment of the present invention, the guiding component includes a U-shaped groove and a guide gear, the guide gear being rotatably mounted in the U-shaped groove, the U-shaped groove being mounted on the base, and the opening of the U-shaped groove being connected to the opening of the storage tube.

[0007] As a further embodiment of the present invention, the guide gear guides the movement of a rigid chain on one side through tooth meshing.

[0008] As a further embodiment of the present invention, the single-sided rigid chain is connected to the gauge block via a connecting component.

[0009] As a further embodiment of the present invention, the connecting assembly includes a connector and a connecting pin; one end of the connector is connected to a pipe gauge, and a pin hole is provided on the side of the connector, and a single-sided rigid chain is fixed to the pin hole by a connecting pin.

[0010] As a further embodiment of the present invention, the base is mounted on the support leg.

[0011] As a further embodiment of the present invention, one end of the guide gauge is a conical body, and steel wire for cleaning impurities inside the oil pipe is wound around the outer periphery of the conical body.

[0012] As a further aspect of the present invention, a chain tensioner for controlling the chain tension is installed on the base.

[0013] As a further embodiment of the present invention, the motor is fixed to the base by a frame, and the frame is provided with lifting rings.

[0014] As a further embodiment of the present invention, a control box is installed on the base, and a PLC controller is placed inside the control box. The PLC controller is used to control the operation of the motor.

[0015] This invention discloses a chain-type transverse oil pipe diameter inspection device. Its advantages, compared to existing technologies, are that the invention uses a PLC controller to control the forward and reverse rotation of the motor, thereby enabling a single-sided rigid chain to move the gauge, achieving automatic advancement and retraction of the gauge without manual operation, reducing labor intensity. A guide component is designed to limit the movement trajectory of the single-sided rigid chain, ensuring precise movement and preventing deviation or jamming. A hand-cranked jack at the base allows for height adjustment to accommodate oil pipes of different heights. The flared opening of the receiving cylinder and the conical design of the gauge facilitate rapid insertion into the oil pipe. The steel wire around the conical outer periphery simultaneously cleans impurities from the inner wall of the oil pipe, achieving integrated "inspection + cleaning" operations and improving work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 for Figure 1 A side view diagram;

[0019] Figure 3 for Figure 1 A partial cross-sectional schematic diagram;

[0020] Figure 4 This is a schematic diagram of the assembly of a single-sided rigid chain, connecting components, and a through-gauge.

[0021] As shown in the figure:

[0022] 1. Pipe gauge; 2. Storage cylinder; 3. Motor; 4. Control box; 5. Drive sprocket; 6. Sprocket disc; 7. Lifting ring; 8. Frame; 9. Driven sprocket; 10. Chain; 11. Single-sided rigid chain; 12. Auxiliary sprocket; 13. Support leg; 14. Chain tensioner; 15. Base; 16. U-shaped groove; 17. Guide gear; 18. Connector; 19. Connecting pin. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The following is merely a conceptual description of specific embodiments of the present invention. Any adjustments, equivalent substitutions, improvements, etc., made by those skilled in the art to various details of the technical solutions of the present invention without departing from the spirit of the present invention should fall within the scope of protection defined by the claims of the present invention.

[0024] To further understand the invention, the technical solution will be further described below in conjunction with specific embodiments.

[0025] Example 1: As Figures 1-4As shown, this embodiment provides a chain-type transverse oil pipe diameter inspection device, mainly composed of a pipe gauge 1, a storage cylinder 2, a motor 3, a control box 4, a drive sprocket 5, a sprocket, a frame 8, a driven sprocket 9, a chain 10, a single-sided rigid chain 11, an auxiliary sprocket 12, a base 15, and a guide assembly. The motor 3 is fixed to the base 15 via the frame, and the output end of the motor 3 is connected to the drive sprocket 5. The motor 3 is powered by a vehicle battery or on-site grid power.

[0026] In one specific embodiment of this invention, the guiding component includes a U-shaped groove 16 and a guide gear 17. Driven by force, the guide gear 17 rotates within the U-shaped groove 16. The U-shaped groove 16 is mounted on the base 15, and its opening communicates with the opening of the storage cylinder 2. Specifically, the single-sided rigid chain 11 moves with the rotation of the sprocket 6. The guide gear 17 guides the single-sided rigid chain 11 to move linearly through tooth meshing. After contacting the bottom of the U-shaped groove 16, the single-sided rigid chain 11 transitions to a linear motion conforming to the U-shaped groove 16. The single-sided rigid chain 11 can only bend to one side. The storage cylinder 2 is placed horizontally on the base 15. The storage cylinder 2 is used to store the pipe gauge 1, and the core of the storage cylinder 2 is aligned with the opening of the U-shaped groove 16. When the single-sided rigid chain 11, guided by the guide gear 17, extends from the opening of the U-shaped groove 16, it enters the storage cylinder 2 and contacts the pipe gauge 1, thereby pushing the pipe gauge 1 to move and perform pipe cleaning operations.

[0027] The single-sided rigid chain 11 is connected to the gauge 1 via a connecting assembly. Specifically, the connecting assembly includes a connector 18 and a connecting pin 19. One end of the connector 18 is threaded to the gauge 1, and pin holes are symmetrically arranged on the side of the connector 18. The connecting pin 19 passes through the first pin hole, the single-sided rigid chain 11, and the second pin hole from top to bottom, thereby achieving the connection and fixation between the single-sided rigid chain 11 and the connector 18.

[0028] The frame 8 is installed in the middle of the base 15. A sprocket disc 6 is mounted on the frame 8. A single-sided rigid chain 11 is wound around the sprocket disc 6. A driven sprocket 9 is connected to the axle of the sprocket disc 6 via a flat key. The driven sprocket 9 is connected to the auxiliary sprocket 12 and the driving sprocket 5 via a chain 10. The auxiliary sprocket 12 is connected to the guide gear 17 via a connecting rod and is used to drive the guide gear 17 to rotate. When motor 3 rotates forward, motor 3 drives the drive sprocket 5 to rotate, while simultaneously driving the sprocket disc 6, auxiliary sprocket 12, and driven sprocket 9 to rotate. The auxiliary sprocket 12 drives the guide gear 17 to rotate within the U-shaped groove 16 via a connecting rod. The single-sided rigid chain 11 moves with the rotation of the sprocket disc 6. The driven sprocket 9, auxiliary sprocket 12, and drive sprocket 5 are arranged in a triangular pattern. Under the action of gravity, one end of the single-sided rigid chain 11 disengages from the sprocket disc 6. The single-sided rigid chain 11 gradually approaches the guide gear 17. When the single-sided rigid chain 11 contacts the guide gear 17, the two are driven by rack and pinion. Under the guidance of the guide gear 17, the single-sided rigid chain 11 contacts the U-shaped groove 16 and moves along the U-shaped groove 16 until the single-sided rigid chain 11 contacts the pipe gauge 1 and pushes the pipe gauge 1 to perform pipe cleaning operations.

[0029] A control box 4 is mounted on the base 15, and a PLC controller is placed inside the control box 4. The PLC controller is electrically connected to the motor 3 via a relay to control the operation of the motor 3. The motor 3 drives the drive sprocket 5 to rotate, thereby controlling the movement of the single-sided rigid chain 11. When the drive sprocket 5 rotates forward, the single-sided rigid chain 11 extends, pushing the pipe gauge 1 to perform pipe cleaning operations. When the pipe gauge 1 moves from one end of the oil pipe to the other end, the PLC controller sends a reverse signal to the motor 3, the main sprocket rotates in the opposite direction, and the single-sided rigid chain 11, carrying the pipe gauge 1, retracts into the storage cylinder 2, completing one transverse inspection process of the oil pipe diameter. When the pipe gauge 1 encounters resistance during its advance, the current of the PLC controller increases. When the current reaches a set threshold, the motor 3 stops rotating forward and then reverses. The single-sided rigid chain 11 pulls the pipe gauge 1 to release it and retracts into the storage cylinder 2.

[0030] Example 2: As Figures 1-4 As shown in Example 1, as a specific implementation of this embodiment, the base 15 is mounted on the support leg 13. The support leg 13 uses a hand-cranked jack, and its height can be adjusted according to actual conditions to meet different usage requirements. One end of the gouge 1 is conical, and steel wire for cleaning impurities inside the oil pipe is wound around the outer periphery of the conical body. The conical design facilitates the introduction of the oil pipe, making it easier, more accurate, and smoother for the gouge 1 to enter the oil pipe. The steel wire on the outer periphery of the conical body allows the gouge 1 to clean impurities (such as mud, sand, and scale) inside the oil pipe during its movement. In addition, one end of the receiving cylinder 2 is flared, and the oil pipe is placed into the flared mouth, making it easier for the gouge 1 to enter the oil pipe.

[0031] A chain tensioner 14 is installed on the base 15. The chain tensioner 14 is used to adjust the tension of the chain 10 to ensure a more continuous transmission between the driven sprocket 9, the auxiliary sprocket 12, and the driving sprocket 5.

[0032] To facilitate movement, lifting rings 7 are provided on the frame 8, which can be used for lifting operations to transport the equipment and enable pipe-connecting operations at different locations.

[0033] A single-sided rigid chain 11 is wound around the sprocket 6. When the sprocket 6 rotates forward, the single-sided rigid chain 11 extends out and, after passing through the guide assembly, pushes the pipe gauge 1 to perform pipe cleaning operations inside the oil pipe. When the sprocket 6 rotates in the reverse direction, the single-sided rigid chain 11 is wound around the sprocket 6 again and retracts the pipe gauge 1 into the storage cylinder 2.

[0034] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the tool facing the observer is defined as the front, the left side of the observer is defined as the left, and so on. No specific limitations are made, but this is only to facilitate the understanding of this technical solution by those skilled in the art.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chain-type transverse oil pipe diameter inspection device, characterized in that, The system includes a frame (8) mounted on a base (15), a storage tube (2) and a guide assembly. The storage tube (2) is used to store the pipe gauge (1). A sprocket disc (6) is mounted on the frame (8). A single-sided rigid chain (11) is wound around the sprocket disc (6). The sprocket disc (6) is connected to the driven sprocket (9). The driven sprocket (9) is linked to the auxiliary sprocket (12) and the driving sprocket (5) through a chain (10). The auxiliary sprocket (12) is connected to the guide assembly. The motor (3) drives the driving sprocket (5) to rotate while indirectly driving the sprocket disc (6) and the auxiliary sprocket (12) to rotate. Then, the single-sided rigid chain (11) pushes the pipe gauge (1) to perform pipe cleaning operations under the guidance of the guide assembly.

2. The chain-type transverse tubing diameter inspection device according to claim 1, characterized in that, The guide assembly includes a U-shaped groove (16) and a guide gear (17). The guide gear (17) is rotatably mounted in the U-shaped groove (16). The U-shaped groove (16) is mounted on the base (15). The opening of the U-shaped groove (16) is connected to the opening of the storage tube (2).

3. The chain-type transverse oil pipe diameter inspection device according to claim 2, characterized in that, The guide gear (17) guides the movement of the rigid chain (11) on one side through tooth meshing.

4. The chain-type transverse oil pipe diameter inspection device according to claim 3, characterized in that, The single-sided rigid chain (11) is connected to the pipe gauge (1) via a connecting component.

5. The chain-type transverse oil pipe diameter inspection device according to claim 4, characterized in that, The connecting assembly includes a connector (18) and a connecting pin (19); one end of the connector (18) is connected to the pipe gauge (1), and the side of the connector (18) is provided with a pin hole, and the single-sided rigid chain (11) is fixed to the pin hole by the connecting pin (19).

6. The chain-type transverse tubing diameter inspection device according to claim 1, characterized in that, The base (15) is mounted on the support leg (13).

7. The chain-type transverse tubing diameter inspection device according to claim 1, characterized in that, One end of the pipe gauge (1) is a cone shape, and steel wire for cleaning impurities inside the oil pipe is wrapped around the outer periphery of the cone shape.

8. The chain-type transverse tubing diameter inspection device according to claim 1, characterized in that, A chain tensioner (14) for controlling the tension of the chain (10) is installed on the base (15).

9. The chain-type transverse tubing diameter inspection device according to claim 1, characterized in that, The motor (3) is fixed to the base (15) by the frame, and the frame (8) is equipped with a lifting ring (7).

10. A chain-type transverse tubing diameter inspection device according to claim 1, characterized in that, A control box (4) is installed on the base (15), and a PLC controller is placed inside the control box (4). The PLC controller is used to control the operation of the motor (3).

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