Wellhead heat preservation device

Abstract

The utility model relates to the technical field of oil wells, in particular to a wellhead heat preservation device. The wellhead heat preservation device comprises a bottom plate, a fixedly-connected heat preservation barrel is installed on the bottom plate, and symmetrically-distributed installation semi-rings are movably installed in the heat preservation barrel. A plurality of evenly-distributed inserting grooves are formed in the mounting semi-rings, and heating pipes are inserted into the inserting grooves. According to the wellhead heat preservation device, when the heating pipe is damaged and needs to be overhauled, after a worker opens the sealing cover and powers off, the heating pipe can be directly lifted upwards from the interior of the inserting groove to be disassembled, and therefore later overhaul of the wellhead heat preservation device can be more flexible and convenient.

Description

Technical Field

[0001] This utility model relates to the field of oil well technology, and in particular to a wellhead insulation device. Background Technology

[0002] A wellhead insulation device is a system specifically designed to provide an external heat source for oil and gas wellhead equipment (such as production trees, gas trees, throttle valves, and pipelines) to maintain their operating temperature above the freezing point or wax precipitation point. Its core purpose is to ensure the fluidity of the wellhead fluid and guarantee production safety.

[0003] A detachable wellhead insulation device with Chinese patent publication number CN222976796U is described in its specification. The heating pipe in the device is installed inside the mounting cover, which is a relatively closed structure. When the heating pipe is damaged and needs to be repaired, the disassembly process is relatively complicated, which increases the difficulty of subsequent maintenance.

[0004] Therefore, it is necessary to provide a new wellhead insulation device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a wellhead insulation device.

[0006] The wellhead insulation device provided by this utility model includes: a base plate, on which an insulation cylinder is fixedly connected, and symmetrically distributed installation semi-rings are movably installed inside the insulation cylinder;

[0007] The installation half-ring has multiple evenly distributed slots inside, and heating tubes are inserted into the slots. The top of the insulation cylinder is fitted with a fixedly connected docking ring, and a sealing cap for sealing the top of the docking ring is installed on the docking ring by means of a threaded structure.

[0008] Preferably, both sides of the interior of the insulation cylinder are equipped with fixedly connected support frames. A threaded drive rod is inserted into the interior of the support frame. A rotatably connected support plate is installed at the end of the drive rod near the center of the insulation cylinder, and the support plate is fixedly connected to the outer wall of the corresponding mounting half ring.

[0009] Preferably, guide rods are fixedly connected to both sides of the drive rod on the outer wall of the support plate, and the outer wall of the guide rod abuts against and slides with the interior of the support frame.

[0010] Preferably, the end of the drive rod away from the support frame extends to the outside of the insulation cylinder, and the outer wall of the drive rod is threadedly connected to the side wall of the insulation cylinder.

[0011] Preferably, a protective cylinder is fixedly connected to the outer wall of the insulation cylinder at the location opposite to the drive rod, and an end cap for sealing the end of the protective cylinder is installed at the end via a threaded structure.

[0012] Preferably, the interior of the insulation cylinder has a through hole.

[0013] Compared with related technologies, the wellhead insulation device provided by this utility model has the following beneficial effects:

[0014] 1. In subsequent use, when the heating tube is damaged and needs repair, the staff can directly lift the heating tube from the inside of the slot for disassembly after opening the sealing cover and turning off the power. Therefore, the later maintenance of this device can be more flexible and convenient.

[0015] 2. By setting the heating tube as a protruding structure, the outer wall of the heating tube can be made to abut against the outer wall of the wellhead during use. This direct abutment method can improve the heat conduction efficiency of the heating tube when heating and insulating the wellhead, thus helping to improve the energy efficiency of this device.

[0016] 3. By using a protective cylinder, this utility model can protect the threaded structure on the outer wall of the drive rod after the device is installed and the end cap is connected to the protective cylinder. This prevents dust particles in the air from settling on the exposed threaded structure and affecting the rotation of the drive rod. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the wellhead insulation device provided by this utility model;

[0018] Figure 2 for Figure 1 A partial cross-sectional structural diagram of the base plate, insulation cylinder, and protective connection shown;

[0019] Figure 3 for Figure 1 The diagram shows the structure of the mounting half-ring and its components.

[0020] The following are the labels in the diagram: 1. Base plate; 2. Insulation cylinder; 21. Connecting ring; 211. Through hole; 22. Sealing cap; 23. Support frame; 3. Mounting half ring; 31. Slot; 32. Support plate; 321. Guide rod; 33. Drive rod; 4. Protective cylinder; 41. End cap; 5. Heating tube. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] Please see Figures 1 to 3 The present invention provides a wellhead insulation device, which includes a base plate 1.

[0024] In the embodiments of this utility model, please refer to Figures 1 to 3 A heat-insulating cylinder 2 is fixedly connected to the base plate 1. Symmetrically distributed mounting semi-rings 3 are movably installed inside the heat-insulating cylinder 2. Multiple evenly distributed slots 31 are opened inside the mounting semi-rings 31, and heating tubes 5 are inserted into the slots 31. A fixedly connected docking ring 21 is installed on the top of the heat-insulating cylinder 2, and a sealing cap 22 is installed on the docking ring 21 via a threaded structure to seal its top. Fixedly connected support frames 23 are installed on both sides inside the heat-insulating cylinder 2. A threaded drive rod 33 is inserted inside the support frame 23. A rotatably connected support plate 32 is installed at the end of the drive rod 33 near the center of the heat-insulating cylinder 2, and the support plate 32 is fixedly connected to the outer wall of the corresponding mounting semi-ring 3. Fixedly connected guide rods 321 are installed on both sides of the drive rod 33 on the outer wall of the support plate 32, and the outer wall of the guide rod 321 abuts against and slides against the inside of the support frame 23. The end of the drive rod 33 away from the support frame 23 extends to the outside of the heat-insulating cylinder 2, and the outer wall of the drive rod 33 is threadedly connected to the side wall of the heat-insulating cylinder 2.

[0025] It should be noted that by inserting the heating tube 5 into multiple slots 31 inside the installation semi-ring 3, this exposed insertion method allows for easy removal of the heating tube 5 when it is damaged and requires repair. After opening the sealing cover 22 and disconnecting the power, the operator can directly lift the heating tube 5 from inside the slot 31 for disassembly. This makes the subsequent maintenance of the device more flexible and convenient. Furthermore, by setting the heating tube 5 as a protruding structure, the outer wall of the heating tube 5 can abut against the outer wall of the wellhead during use. This direct abutment method can improve the heat conduction efficiency of the heating tube 5 when heating and insulating the wellhead, thus helping to improve the energy efficiency of the device.

[0026] In the embodiments of this utility model, please refer to Figures 1 to 3 A protective cylinder 4 is fixedly connected to the outer wall of the insulation cylinder 2 at the position opposite to the drive rod 33, and an end cap 41 for sealing the end of the protective cylinder 4 is installed at the end of the protective cylinder 4 through a threaded structure.

[0027] It should be noted that: by setting the protective cylinder 4 and the end cap 41, when the installation of this device is completed, the protective cylinder 4 and the end cap 41 can form a protective cover for the drive rod 33, thereby preventing the threaded structure in the drive rod 33 from being exposed to the outside, and preventing the drive rod 33 from getting stuck due to external dust falling on the threads on its outer wall.

[0028] In the embodiments of this utility model, please refer to Figures 1 to 3 The interior of the heat preservation cylinder 2 has a through hole 211.

[0029] It should be noted that: by setting through hole 211, when installing heating tube 5, through hole 211 can provide a through hole for the wire connected to heating tube 5, so that the wire can pass through smoothly.

[0030] The working principle of the wellhead insulation device provided by this utility model is as follows:

[0031] When in use, the base plate 1 can be fitted onto the outside of the wellhead and fixed with bolts, so that the insulation cylinder 2 can be smoothly installed on the outside of the wellhead;

[0032] Then, the heating tube 5 can be removed and inserted into the slot 31 inside the installation half-ring 3. Next, the drive rod 33 can be controlled to rotate. The rotating drive rod 33 can move spirally inside the support frame 23 through the threaded structure. Since the drive rod 33 and the support plate 32 are rotatably connected, the installation half-ring 32 can be driven to move synchronously during the spiral movement of the drive rod 33 until the outer wall of the heating tube 5 in the installation half-ring 3 abuts against the outer wall of the wellhead. Then, the drive rod 33 on the other side can be controlled to rotate until the heating tubes 5 on both sides abut against the outer wall of the wellhead to complete the installation of the heating tube 5.

[0033] Then the connecting wire of the heating tube 5 can be extended to the outside of the insulation cylinder 2 through the through hole 211 and connected to the external storage battery that stores the electricity generated by photovoltaic power generation and wind power generation to power the heating tube 5. Using wind and photovoltaic power supply can also help improve the energy efficiency of this device. Then the sealing putty can be removed to seal the through hole 211.

[0034] Then, the sealing cap 22 and the end cap 41 can be removed respectively, and screwed onto the outside of the insulation cylinder 2 and the protective cylinder 4 in sequence through the threaded structure. This completes the installation of the device.

[0035] Since the heating pipe 5 is in contact with the outer wall of the wellhead, this direct contact method can improve the heat transfer effect between the heating pipe 5 and the wellhead, thereby helping to improve the efficiency of heating and heat preservation of the wellhead by the heating pipe 5. At the same time, since the heating pipe 5 is inserted and installed, when the heating pipe 5 is damaged, the power can be cut off first, and then the heating pipe 5 can be driven to separate it from the outer wall of the wellhead. After separation, the heating pipe 5 can be lifted upwards to complete the disassembly. This makes it more flexible for the staff to disassemble, repair and replace the heating pipe 5 in the future.

[0036] The circuits and controls involved in this device are all existing technologies and will not be described in detail here.

[0037] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A wellhead insulation device, characterized in that, Include: The bottom plate (1), the heat preservation cylinder (2) is fixedly connected on the bottom plate (1), the inside of the heat preservation cylinder (2) movably installs the mounting half ring (3) of symmetrical distribution; The inside of the mounting half ring (3) is provided with a plurality of evenly distributed insertion slots (31), the insertion slot (31) is provided with a heating pipe (5), the top of the heat preservation cylinder (2) is provided with a fixedly connected butt joint ring (21), and the butt joint ring (21) is provided with a sealing cover (22) for sealing the top thereof through a threaded structure.

2. The wellhead insulating device of claim 1, wherein, Both sides of the heat preservation cylinder (2) are provided with a fixedly connected support frame (23), the inside of the support frame (23) is provided with a threaded connection driving rod (33), the end of the driving rod (33) close to the center of the heat preservation cylinder (2) is provided with a rotatingly connected support plate (32), and the support plate (32) is fixedly connected with the outer wall of the corresponding mounting half ring (3).

3. The wellhead insulating device of claim 2, wherein, The outer wall of the support plate (32) is provided with a fixedly connected guide rod (321) on both sides of the driving rod (33), and the outer wall of the guide rod (321) is abutted with the inside of the support frame (23) and is slidingly connected.

4. The wellhead insulating device of claim 3, wherein, The end of the driving rod (33) away from the support frame (23) extends to the outside of the heat preservation cylinder (2), and the outer wall of the driving rod (33) is threadedly connected with the side wall of the heat preservation cylinder (2).

5. The wellhead insulating device of claim 4, wherein, The outer wall of the heat preservation cylinder (2) is provided with a fixedly connected protection cylinder (4) at the opposite part of the driving rod (33), and the end of the protection cylinder (4) is provided with an end cover (41) for sealing the end thereof through a threaded structure.

6. The wellhead insulating device of claim 1, wherein, The inside of the heat preservation cylinder (2) is provided with a through hole (211).

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