A tool deployment device for high pressure lines

Abstract

The present application relates to a tool delivery device for high pressure pipeline, comprising an inner cylinder with an inner cavity and an outer cylinder sleeved on the inner cylinder. The lower ends of the inner cylinder and the outer cylinder extend into the high pressure pipeline. A first passage and a second passage are respectively arranged at the upper end and the lower end of the outer cylinder, and the first passage and the second passage are communicated with the inner cavity. The inner cylinder can rotate relative to the outer cylinder, so that the inner cylinder and the outer cylinder have a first relative position only allowing the first passage to communicate and a second relative position only allowing the second passage to communicate. The tool delivery device for high pressure pipeline of the present application can complete the delivery of downhole tools without stopping the liquid circulation in the high pressure pipeline.

Description

Technical Field

[0001] This invention relates to a tool delivery device for high-pressure pipelines. Background Technology

[0002] In oil production operations, with the diversification of downhole tool control methods and the increasing complexity of application processes, more and more downhole tools require activation and control through the insertion of rubber plugs, pressure briquettes, or electronic components carrying control commands into the tubing string. Since the downhole tubing string is often under high pressure during tool deployment, direct deployment is not feasible.

[0003] The current standard practice is to stop the fluid circulation, disconnect a connection in the tubing, expose the inner bore of the tubing, and then insert the necessary device into the tubing through the exposed bore. After insertion, the tubing is reconnected to continue the operation. This method increases the workload of disassembling the tubing, and other operations are interrupted during the insertion process, resulting in wasted time and a disruption of the circulation, posing certain risks. Summary of the Invention

[0004] To address the technical problems described above, the present invention aims to provide a tool delivery device for high-pressure pipelines. The tool delivery device of the present invention can complete the delivery of downhole tools without stopping the fluid circulation within the high-pressure pipeline.

[0005] According to the present invention, a tool delivery device for a high-pressure pipeline is provided, comprising an inner cylinder having an inner cavity and an outer cylinder sleeved on the inner cylinder. The lower ends of the inner cylinder and the outer cylinder extend into the high-pressure pipeline. A first channel and a second channel communicating with the inner cavity are respectively provided at the upper and lower ends of the outer cylinder.

[0006] The inner cylinder is rotatable relative to the outer cylinder, such that the inner cylinder and the outer cylinder have a first relative position that connects only the first channel and a second relative position that connects only the second channel.

[0007] In a preferred embodiment, the first channel includes a first outer hole and a first inner hole that are respectively disposed at the upper ends of the outer cylinder and the inner cylinder and can form a communication, and the second channel includes a second outer hole and a second inner hole that are respectively disposed at the lower ends of the outer cylinder and the inner cylinder and can form a communication.

[0008] The first outer hole and the second outer hole are arranged coaxially in the circumferential direction, and the first inner hole and the second inner hole are arranged staggered in the circumferential direction.

[0009] In a preferred embodiment, a limiting step that can abut against the inner cylinder is also provided on the inner wall of the outer cylinder on the upper side of the inner cylinder.

[0010] In a preferred embodiment, a rotating rod capable of driving the inner cylinder to rotate is further provided on the inner cylinder, and the upper end of the rotating rod extends out of the outer cylinder.

[0011] In a preferred embodiment, a first sealing device is provided between the outer cylinder and the inner cylinder, and a second sealing device is provided between the outer cylinder and the high-pressure pipeline.

[0012] In a preferred embodiment, the first sealing device and the second sealing device are configured as annular sealing rings, which are disposed between the first inner hole and the second inner hole in the axial direction.

[0013] In a preferred embodiment, the device further includes a pressure cap disposed at the upper end of the outer cylinder, the pressure cap having a through hole that allows the rotating rod to pass through.

[0014] In a preferred embodiment, a scale is also provided on the upper surface of the cap.

[0015] In a preferred embodiment, a handle is also provided at the upper end of the rod.

[0016] In a preferred embodiment, the second outer hole is configured to be parallel to the axial direction of the high-pressure pipeline. Attached Figure Description

[0017] The invention will now be described with reference to the accompanying drawings.

[0018] Figure 1 A schematic diagram of a tool delivery device for high-pressure pipelines according to an embodiment of the present invention is shown.

[0019] Figure 2 for Figure 1 The diagram shows the inner cylinder of the tool delivery device for the high-pressure pipeline in the first relative position.

[0020] Figure 3 for Figure 1 This is a schematic diagram showing the inner cylinder of the tool delivery device for the high-pressure pipeline in the second relative position.

[0021] In this application, all drawings are schematic and are used only to illustrate the principles of the invention, and are not drawn to scale. Detailed Implementation

[0022] The invention will now be described with reference to the accompanying drawings. In this document, the terms "upper end" and "lower end," or similar terms, respectively refer to the ends of the outer cylinder that are furthest from and closest to the high-pressure pipeline.

[0023] Figure 1 A tool dispensing device 100 for high-pressure pipelines according to an embodiment of the present invention is shown. Figure 1 As shown, the tool dispensing device 100 for high-pressure pipelines includes an inner cylinder 10 and an outer cylinder 20 sleeved outside the inner cylinder 10, with an inner cavity 11 defined within the inner cylinder 10. The lower ends of the inner cylinder 10 and the outer cylinder 20 extend into and are fixed inside the high-pressure pipeline 1, while their upper ends extend out of the high-pressure pipeline 1, thereby connecting the tool dispensing device 100 to the high-pressure pipeline 1.

[0024] like Figure 1 As shown, a first inner hole 12 and a first outer hole 22 are respectively provided at the upper ends of the inner cylinder 10 and the outer cylinder 20. The first inner hole 12 and the first outer hole 22 are located at the same position in the axial direction. Meanwhile, the inner cylinder 10 is configured to rotate relative to the outer cylinder 20. Thus, when the inner cylinder 10 rotates relative to the outer cylinder 20, it has a first relative position where the first inner hole 12 and the first outer hole 22 are connected, and a second relative position where the first inner hole 12 and the first outer hole 22 are not connected. When the first inner hole 12 and the first outer hole 22 are connected, they can together form a first channel 15 (e.g., ...). Figure 2 As shown), this allows the operator to drop the downhole tool 19 through the first channel 15 to the lower end of the inner cavity 11, which is located within the high-pressure pipeline 1.

[0025] Similarly, a second inner hole 14 and a second outer hole 24 are respectively provided at the lower ends of the inner cylinder 10 and the outer cylinder 20. The second inner hole 14 and the second outer hole 24 are in the same position in the axial direction. Thus, when the inner cylinder 10 rotates relative to the outer cylinder 20, the second inner hole 14 and the second outer hole 24 can connect to form a second channel 25 connecting the high-pressure pipeline 1 and the inner cavity 11. At this time, the inner cylinder 10 rotates to a second relative position. When the second channel 25 is connected, the fluid flowing through the high-pressure pipeline 1 can pass through the second channel 25, thereby sending the downhole tool 19 in the inner cavity 11 into the high-pressure pipeline 1.

[0026] In this invention, the first outer hole 22 and the second outer hole 24 are coaxially arranged in the circumferential direction, while the first inner hole 12 and the second inner hole 14 are arranged alternately in the circumferential direction. Therefore, when the inner cylinder 20 rotates to the first relative position, the second inner hole 14 and the second outer hole 24 do not correspond, and the second channel 25 is cut off. Conversely, when the inner cylinder 20 rotates to the first relative position, the first inner hole 12 and the first outer hole 22 do not correspond, and the first channel 15 is cut off.

[0027] Therefore, during the rotation of the inner cylinder 10, one of the first channel 15 and the second channel 25 is always cut off. Thus, during the deployment of the downhole tool 19, regardless of how the inner cylinder 10 rotates, the high-pressure pipeline 1 remains isolated from the space on the upper side of the outer cylinder 20. This process will be described in detail below.

[0028] Figure 2 for Figure 1 This is a schematic diagram showing the inner cylinder 10 of the tool delivery device 100 for the high-pressure pipeline in the first relative position. (See diagram below.) Figure 2 As shown, at this time, the orientation of the first outer hole 22 and the first inner hole 12 is parallel to the axial direction of the high-pressure pipeline 1, making the first channel 15 in a connected state. In this state, the operator can use the first channel 15 to deliver the downhole tool 19 to the bottom of the inner cavity 11 within the high-pressure pipeline 1. However, since the second inner hole 14 is staggered from the first inner hole 12, the orientation of the second inner hole 14 is perpendicular to the axial direction of the high-pressure pipeline 1, thus the second channel 25 is not connected. At this time, the high-pressure pipeline 1 will not flow to the outside of the outer cylinder 20 through the second channel 25 and the first channel 15.

[0029] Figure 3 for Figure 1 This is a schematic diagram showing the inner cylinder 10 of the tool delivery device 100 for the high-pressure pipeline in the second relative position. (See diagram below.) Figure 3 As shown, the first inner hole 12 is perpendicular to the axial direction of the high-pressure pipeline 1, while the second inner hole 22 is parallel to the axial direction of the high-pressure pipeline 1. At this time, the second channel 25 is in a connected state. Simultaneously, the second outer hole 24 is set to be parallel to the axial direction of the high-pressure pipeline 1, such that when the second outer hole 24 is connected to the second inner hole 14, the resulting second channel 25 is parallel to the axial direction of the high-pressure pipeline 1. Furthermore, there are two second channels 25: the second channel 25 located upstream of the high-pressure pipeline 1 forms a fluid inlet channel, while the second channel 25 located downstream of the high-pressure pipeline 1 forms a fluid outlet channel. Thus, the fluid in the high-pressure pipeline 1 can smoothly pass through the inner cavity 11, bringing the downhole tool 19 within the inner cavity 11 into the high-pressure pipeline 1 for deployment.

[0030] At this time, since the first channel 15 is not connected, the fluid flowing into the inner cavity 11 will not flow out along the first channel 15.

[0031] In summary, during the deployment of the downhole tool 19, the high-pressure pipeline 1 remains isolated from its external space. Therefore, the tool deployment device 100 for high-pressure pipelines of this invention enables the deployment of the downhole tool 19 without interrupting the fluid flow within the high-pressure pipeline 1, thereby simplifying the deployment process and improving operational efficiency.

[0032] It should be noted that, for ease of representation, Figure 2 and Figure 3 The size of the first inner hole 12 shown is relatively large. In actual production, those skilled in the art should reasonably reduce the size of the first inner hole 12 to prevent the first inner hole 12 and the first outer hole 22, as well as the second inner hole 14 and the second outer hole 24, from simultaneously partially corresponding (i.e., the first channel 15 and the second channel 25 are simultaneously partially connected) during rotation. This avoids the high-pressure pipeline 1 from being connected to the outside.

[0033] like Figure 1 As shown, in a preferred embodiment, a limiting step 26 is further provided on the inner wall of the outer cylinder 20 on the upper side of the inner cylinder 10. The limiting step 26 can abut against the inner cylinder 10. In this way, after the high-pressure fluid enters the inner cavity 11, the limiting step 26 can restrict the inner cylinder 10, preventing the inner cylinder 10 from moving upward under high pressure, thereby causing misalignment between the first inner hole 12 and the second inner hole 14, as well as the first outer hole 22 and the first inner hole 12, affecting the normal use of the dispensing device 100.

[0034] Meanwhile, a rotating rod 40 is also provided on the inner cylinder, with its upper end extending out of the outer cylinder 20. In actual operation, the operator can use the rotating rod 40 to rotate the inner cylinder 10 relative to the outer cylinder 20. Furthermore, a handle 45 is provided at the upper end of the rotating rod 40. The handle 45 reduces the torque required to rotate the inner cylinder.

[0035] like Figure 1 As shown, a first sealing device 18 is provided between the outer cylinder 20 and the inner cylinder 10, and a second sealing device 28 is provided between the outer cylinder 20 and the high-pressure pipeline 1. The first sealing device 18 and the second sealing device 28 can be, for example, an annular sealing ring. The first sealing device 18 and the second sealing device 28 are preferably disposed between the first inner hole 12 and the second inner hole 22. This arrangement not only allows the first sealing device 18 and the second sealing device 28 to respectively isolate the gaps between the outer cylinder 20 and the inner cylinder 10 and the high-pressure pipeline 1, but also allows the first sealing device 18 and the second sealing device 28 to isolate the first channel 15 and the second channel 25, thereby preventing fluid outflow.

[0036] In addition, in this invention, a pressure cap 50 is provided at the upper end of the outer cylinder 20. The pressure cap has a through hole 55 through which the rotating rod 40 passes. The pressure cap 50 can protect the entire dispensing device 100. Furthermore, a scale (not shown) is provided on the upper end face 52 of the pressure cap 50. The scale can indicate the rotation angle of the rotating rod 40, thereby facilitating precise control of the rotation of the inner cylinder 10 by the operator.

[0037] The following is a brief description of the operation of the tool delivery device 100 for high-pressure pipelines according to the present invention.

[0038] The tool delivery device 100 for high-pressure pipelines of the present invention is used to deliver downhole tools 19 into high-pressure pipelines 1. When it is necessary to deliver the downhole tool 19, the rotating rod 40 is first rotated so that the inner cylinder 10 is in a first relative position. At this time, the first channel 15 is connected and the second channel 25 is not connected, so the operator can put the downhole tool 19 into the inner cavity 11 through the first channel 15.

[0039] Once the downhole tool 19 has reached the bottom of the inner cavity 11, the operator can continue to rotate the rotating rod 40, bringing the inner cylinder 10 to a second relative position. At this point, the first channel 15 is cut off, and the second channel 25 is connected. Subsequently, the fluid in the high-pressure pipeline 1 can pass through the second channel 25 into the inner cavity 11, carrying the downhole tool 19 from the inner cavity 11 into the high-pressure pipeline 1. At this point, the deployment of the entire downhole tool 19 is complete.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tool dispensing device for high-pressure pipelines, comprising: An inner cylinder (10) with an inner cavity (11) and an outer cylinder (20) sleeved on the inner cylinder. The lower ends of the inner cylinder and the outer cylinder extend into a high-pressure pipeline (1). A first channel (15) and a second channel (25) connecting the inner cavity are respectively provided at the upper and lower ends of the outer cylinder. The inner cylinder is rotatable relative to the outer cylinder, such that the inner and outer cylinders have a first relative position that connects only the first channel and a second relative position that connects only the second channel. The first channel includes a first outer hole (22) and a first inner hole (12) that are respectively disposed at the upper ends of the outer cylinder and the inner cylinder and can form a connection. The second channel includes a second outer hole (24) and a second inner hole (14) that are respectively disposed at the lower ends of the outer cylinder and the inner cylinder and can form a connection. The first outer hole and the second outer hole are coaxially arranged in the circumferential direction, and the first inner hole and the second inner hole are staggered in the circumferential direction.

2. The tool dispensing device for high-pressure pipelines according to claim 1, characterized in that, A limiting step (26) that can abut against the inner cylinder is also provided on the inner wall of the outer cylinder on the upper side of the inner cylinder.

3. The tool dispensing device for high-pressure pipelines according to any one of claims 1-2, characterized in that, A rotating rod (40) capable of driving the inner cylinder to rotate is also provided on the inner cylinder, with the upper end of the rotating rod extending out of the outer cylinder.

4. The tool dispensing device for high-pressure pipelines according to any one of claims 1-2, characterized in that, A first sealing device (18) is provided between the outer cylinder and the inner cylinder, and a second sealing device (28) is provided between the outer cylinder and the high-pressure pipeline.

5. The tool dispensing device for high-pressure pipelines according to claim 4, characterized in that, The first sealing device and the second sealing device are configured as annular sealing rings, which are disposed between the first inner hole and the second inner hole in the axial direction.

6. The tool dispensing device for high-pressure pipelines according to claim 3, characterized in that, The device also includes a pressure cap (50) disposed at the upper end of the outer cylinder, the pressure cap having a through hole (55) that allows the rotating rod to pass through.

7. The tool dispensing device for high-pressure pipelines according to claim 6, characterized in that, A scale is also provided on the upper surface of the pressure cap.

8. The tool dispensing device for high-pressure pipelines according to claim 3, characterized in that, A handle (45) is also provided at the upper end of the rod.

9. The tool dispensing device for high-pressure pipelines according to any one of claims 1-2, characterized in that, The opening direction of the second outer hole is set to be parallel to the axial direction of the high-pressure pipeline.

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