Pipe column drift diameter mechanism for petroleum well repair and pipe column drift diameter device for petroleum well repair

Abstract

The utility model discloses a tubular column drift diameter mechanism for petroleum well repair and a tubular column drift diameter device for petroleum well repair, and belongs to the technical field of petroleum well repair equipment. The utility model relates to a tubular column drift diameter mechanism for petroleum well repair, which is characterized by comprising a support, a drift diameter driving chain wheel, a drift diameter chain, a drift diameter chain slideway and a drift pipe gauge, the drift diameter driving chain wheel is rotatably arranged on the support, and one end of the drift diameter chain is positioned in the drift diameter chain slideway; the other end of the drift-diameter chain is wound from the lower part of a drift-diameter driving chain wheel to the upper part of the drift-diameter driving chain wheel and then is connected with the pipe passing gauge; and the drift-diameter driving chain wheel is connected with a driving mechanism arranged on the support. According to the utility model, the drift diameter driving chain wheel and the drift diameter chain are matched to drive the drift pipe gauge to carry out drift diameter detection, the phenomena of slipping, clamping stagnation and the like cannot occur between the drift diameter driving chain wheel and the drift diameter chain, the operation efficiency of the drift diameter device can be ensured, and the drift diameter driving chain wheel is matched with the drift diameter chain, so that the bearing capacity of the chain is large, and the drift diameter effect can be improved.

Description

Technical Field

[0001] This utility model relates to a tubing string gauging mechanism and device for oil well workover, which is mainly used to gaug the tubing string used for oilfield drilling and belongs to the technical field of oil well workover equipment. Background Technology

[0002] Before being lowered into the well, the tubing used in oilfield drilling requires an inner diameter inspection. This is typically done by using a gauge to pass through from one end of the tubing to the other. If the gauge passes through, the tubing's inner diameter is considered acceptable; otherwise, it is considered unacceptable. Currently, the most common method for tubing clearance is gravity clearance, where the gauge is inserted into the tubing, the tubing is held upright, and the gauge passes through by gravity. This method is inefficient and cannot be used with automated well workover equipment for automated tubing clearance operations.

[0003] Mechanized pipe-clearing devices have also emerged, such as the Chinese utility model patent CN218324842U, which discloses a pipe-clearing device for oil well workover. This device uses a drive disc to drive a flexible shaft, which moves a pipe gauge into the tubing for clearance inspection. To ensure reliable transport of the flexible shaft by the drive disc, multiple clamping rollers are installed along the outer circumference of the drive disc frame. These rollers apply pressure to the flexible shaft, facilitating clamping and transport in conjunction with the drive disc. However, this type of device is not only structurally complex, making installation and maintenance of the flexible shaft inconvenient, but also prone to slippage and jamming due to the oil well environment, as oil, silt, and other contaminants easily adhere to the flexible shaft, affecting its normal operation. Utility Model Content

[0004] To address the aforementioned shortcomings in the existing technology, this utility model provides a reliable borehole gauge mechanism for oil well workover.

[0005] This utility model is achieved through the following technical solution: a pipe string gauging mechanism for oil well workover, characterized in that: it includes a support, a gauging drive sprocket, a gauging chain, a gauging chain slide, and a gauging gauge. The gauging drive sprocket is rotatably mounted on the support. One end of the gauging chain is located in the gauging chain slide, and the other end of the gauging chain is connected to the gauging gauge after passing from the lower part of the gauging drive sprocket to its upper part. The gauging drive sprocket is connected to a drive mechanism mounted on the support.

[0006] In operation, this invention uses a drive mechanism to rotate a bore gauge drive sprocket, which in turn moves the bore gauge chain and the gauge itself, allowing the gauge to enter the tubing string for bore gauge inspection. If the gauge becomes stuck, the drive mechanism rotates in the opposite direction, pulling the bore gauge chain to remove it, thus preventing the gauge from becoming stuck in the tubing string. This bore gauge inspection operation can be automated via a control device and can be integrated into oil well workover equipment, facilitating automated operation and improving oil well workover efficiency.

[0007] Furthermore, to ensure the ducting effect and prevent the ducting chain from getting stuck inside the tubing, the pitch of the ducting chain is 3-5 times the inner diameter of the tubing being ducted.

[0008] Furthermore, the drive mechanism includes a motor, which is connected to the sprocket shaft of the through-diameter drive sprocket via a sprocket and chain mechanism.

[0009] Furthermore, the support is provided with chain guides for the upper and lower diameter chains of the diameter drive sprocket, respectively, with the diameter chains located within the corresponding chain guides.

[0010] This utility model also provides a tubing string gauging device for oil well workover, the technical solution of which is: a tubing string gauging device for oil well workover, including a frame, the above-mentioned gauging mechanism is provided on the frame, the gauging chain slide is provided on the frame, the upper part of the frame is provided with a tubing string support for supporting the tubing string, and the support of the gauging mechanism is fixedly provided on one end of the frame.

[0011] Furthermore, a horizontally positioned guide tube is fixed on the frame, and a through gauge is slidably positioned inside the guide tube.

[0012] Furthermore, the column support consists of multiple rollers spaced apart along the length of the frame and supported on roller brackets.

[0013] The beneficial effects of this utility model are as follows: This utility model has a simple structure, employing a borehole drive sprocket to drive the borehole chain and gauge into the tubing string for borehole inspection. The borehole drive sprocket and borehole chain work reliably, preventing slippage or jamming, and are unaffected by the oil well environment, ensuring high operational reliability and effectively guaranteeing the working efficiency of the borehole inspection device. If the gauge becomes stuck, the drive mechanism rotates in the reverse direction, pulling the borehole chain to remove the gauge, preventing it from becoming stuck inside the tubing string. Furthermore, the use of a borehole drive sprocket and borehole chain in this utility model results in a chain with high load-bearing capacity, improving borehole inspection efficiency. The borehole inspection operation of this utility model can be automated through a control device and can be integrated into oil well workover equipment, easily achieving automated operation of oil well workover equipment and improving oil well workover efficiency. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the present invention in a specific embodiment;

[0015] Figure 2 This is a side view schematic diagram of the present invention in a specific embodiment;

[0016] Figure 3 yes Figure 2 AA section view diagram;

[0017] Figure 4 yes Figure 3 An enlarged schematic diagram of part C in the diagram;

[0018] Figure 5 This is a front view schematic diagram of the nozzle mechanism in this utility model;

[0019] Figure 6 yes Figure 5 Schematic diagram of section II in the middle;

[0020] Figure 7 This is a three-dimensional structural schematic diagram of the nozzle mechanism in this utility model;

[0021] Figure 8 This is a three-dimensional structural schematic diagram of the present invention in a specific embodiment;

[0022] In the diagram, 1 is the gauging mechanism, 2 is the frame, 3 is the gauging chain slide, 4 is the roller support, 5 is the roller, 6 is the support, and 7 is the guide tube.

[0023] 1.1 Support, 1.2 Driven sprocket, 1.3 Chain, 1.4 Motor mount, 1.5 Through-diameter drive sprocket, 1.6 Drive sprocket shaft, 1.7 Through-diameter chain, 1.8 Motor, 1.9 Drive sprocket, 1.10 Through-diameter gauge, 1.11 Chain guide. Detailed Implementation

[0024] The present invention will be further described below through non-limiting embodiments and in conjunction with the accompanying drawings:

[0025] As attached Figures 1-8 As shown, a tubing string gauging device for oil well workover includes a frame 2, a gauging mechanism 1 mounted on the frame 2, and a tubing string support portion on the upper part of the frame 2 for supporting the tubing string. In this embodiment, the tubing string support portion consists of a plurality of rollers 5 spaced apart along the length of the frame and supported on roller brackets 4. The rollers 5 are rotatably mounted on the roller brackets 4 via bearings.

[0026] The gauging mechanism 1 includes a support 1.1, a gauging drive sprocket 1.5, a gauging chain 1.7, a gauging gauge 1.10, and a drive mechanism. The gauging drive sprocket 1.5 is rotatably mounted on the support 1.1 via a drive sprocket shaft 1.6. The support 1.1 is fixed to the upper part of one end of the frame 2. One end of the gauging chain 1.7 is located in a gauging chain slide 3 located on the upper part of the frame 2. The other end of the gauging chain 1.7 is connected to the gauging gauge 1.10 after passing from the lower part of the gauging drive sprocket 1.5 to its upper part. The drive mechanism includes a motor base 1.4, a motor 1.8 mounted on the motor base 1.4, a driven sprocket 1.2, and a driving sprocket 1.9 mounted on the output shaft of the motor 1.8. The driven sprocket 1.2 is mounted on the drive sprocket shaft 1.6. The motor base 1.4 is fixed to the support 1.1. The driving sprocket 1.9 and the driven sprocket 1.2 are connected by a chain 1.3. Of course, the driving mechanism in this utility model is not limited to the above-mentioned driving structure form, and other driving mechanism forms in the prior art can also be adopted.

[0027] To ensure effective ducting and prevent the duct chain from getting stuck inside the tubing, it is preferable that the pitch of the duct chain 1.7 is 3-5 times the inner diameter of the tubing being ducted.

[0028] To ensure reliable transmission of the through-diameter chain, preferably, the support 1.1 is provided with chain guides 1.11 corresponding to the through-diameter chain at the upper part and the through-diameter chain at the lower part of the through-diameter drive sprocket 1.2, and the through-diameter chain at the upper part and the through-diameter chain at the lower part of the through-diameter drive sprocket 1.2 are respectively located in the corresponding chain guides 1.11.

[0029] To ensure reliable movement of the gauge, a horizontally positioned guide tube 7 is fixed to the frame 2 via a bracket 6, and the gauge 1.10 is slidably positioned inside the guide tube 7.

[0030] In operation, the tube column is placed on the upper part of the roller 5 on the frame 2, corresponding to the gauge 1.10 of the gauging mechanism 1. When the gauging mechanism 1 is working, the motor 1.8 of the gauging mechanism 1 drives the gauging drive sprocket 1.5 to rotate via a sprocket and chain transmission mechanism, which in turn drives the gauge 1.10 to move via the gauging chain 1.7, allowing the gauge 1.10 to enter the tube column for gauging. If the gauge 1.10 becomes stuck, it can be removed by reversing the rotation of the motor.

[0031] This utility model has a simple structure. It uses a sprocket and a chain to drive the pipe gauge for caliper inspection. There will be no slippage or jamming between the sprocket and the chain, which can ensure the working efficiency of the caliper device. In addition, the chain has a large load-bearing capacity, which can improve the caliper inspection effect.

[0032] The caliper operation of this invention can be automated through a control device and can be integrated into oil well workover equipment, making it easy to automate the operation of oil well workover equipment and improving oil well workover efficiency.

[0033] The other parts in this embodiment are all existing technologies and will not be described in detail here.

Claims

1. A pipe string gauge for servicing oil wells, characterized in that: The through-going diameter mechanism comprises a support, a through-going diameter driving sprocket, a through-going diameter chain, a through-going diameter chain slide, and a through-going gauge, the through-going diameter driving sprocket is rotatably arranged on the support, one end of the through-going diameter chain is located in the through-going diameter chain slide, the other end of the through-going diameter chain is connected with the through-going gauge after being wound from the lower part to the upper part of the through-going diameter driving sprocket, and the through-going diameter driving sprocket is connected with a driving mechanism arranged on the support.

2. The pipe column gauge mechanism for workover of oil wells according to claim 1, characterized in that: The pitch of the through-going diameter chain is 3-5 times of the inner diameter of the pipe column.

3. The pipe column gauge passage mechanism for workover of oil according to claim 1 or 2, characterized by: The driving mechanism comprises a motor, and the motor is connected with the sprocket shaft of the through-going diameter driving sprocket through a sprocket and chain mechanism.

4. The pipe column gauge passage mechanism for workover of oil according to claim 1 or 2, characterized by: Chain guide portions are arranged on the support corresponding to the upper and lower through-going diameter chains of the through-going diameter driving sprocket, and the through-going diameter chains are located in the corresponding chain guide portions.

5. A pipe string gauge for use in workover of oil wells, comprising a frame, characterized in that: The machine frame is provided with the through-going diameter mechanism as claimed in any one of claims 1-4, the through-going diameter chain slide is arranged on the machine frame, a pipe column support portion for supporting the pipe column is arranged on the upper part of the machine frame, and the support of the through-going diameter mechanism is fixedly arranged on one end of the machine frame.

6. The pipe column gauge for workover of oil well according to claim 5, characterized in that: A guide pipe horizontally arranged is fixed on the machine frame, and the through-going gauge is slidably arranged in the guide pipe.

7. The pipe column gauge for workover of oil well according to claim 5 or 6, characterized in that: The pipe column support portion is a plurality of rollers arranged on roller supports at intervals along the length direction of the machine frame.

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