Wellhead heat preservation device
By adopting a wellhead insulation device composed of a steel structure frame and insulation boards, the problems of weak load-bearing capacity and inconvenient disassembly of existing devices have been solved, achieving efficient insulation and strong load-bearing effect.
Patent Information
- Application Number
- CN202520710512.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-14
AI Technical Summary
Existing wellhead insulation devices have weak load-bearing capacity and cannot withstand large pressures, and are also inconvenient to disassemble.
It adopts two symmetrically arranged insulated boxes, consisting of a steel structure frame and insulation panels, which are detachably connected by locking strips and connectors. Combined with flame-retardant layers and lubrication channels, it improves load-bearing capacity and ease of disassembly.
It achieves excellent thermal insulation, has strong load-bearing capacity, and is easy to disassemble and install.
Smart Images
Figure CN223867983U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of energy extraction technology, and more specifically, to a wellhead insulation device. Background Technology
[0002] The wellhead Christmas tree is a wellhead device in mechanically operated wells. Its main function is to suspend the tubing string lowered into the well, seal the annular space between the casing and oil casing, control and regulate well production, and ensure the smooth operation of various tasks such as construction, testing, and paraffin removal. Wellhead insulation is a key task in winter to prevent pipeline freezing and blockage, avoid back pressure increases, ensure smooth wellhead flow, and guarantee production operation.
[0003] Most existing technologies use insulated boxes to insulate the wellhead. These boxes consist of two insulated containers joined together with bolts. While these boxes achieve wellhead insulation and are easy to disassemble, their load-bearing capacity is relatively weak and they cannot withstand significant pressure. Utility Model Content
[0004] The purpose of this application is to provide a wellhead insulation device that addresses the shortcomings of the prior art, has good insulation effect, is easy to disassemble, and has strong load-bearing capacity.
[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:
[0006] This application provides a wellhead insulation device, comprising: two insulation boxes, each including a steel frame and an insulation board; a first side of the steel frame is open to form an opening, and a second side perpendicular to the first side and a third side opposite to the first side are respectively covered with insulation boards to be closed; a locking strip is provided on the second side; and a first half-hole is provided on the insulation board; the two insulation boxes are symmetrically arranged and their first sides are fitted together; two symmetrical first half-holes on the two insulation boxes are spliced together to form a first through hole; the inner wall of the first through hole is adapted to the outer wall of the wellhead; and two symmetrical locking strips on the two insulation boxes are fitted together and detachably connected by a connector.
[0007] Optionally, the inner surface of the insulation board is provided with a flame-retardant layer.
[0008] Optionally, the insulation board is a color steel sandwich panel, and the flame retardant layer is a ceramic flame retardant layer.
[0009] Optionally, the locking strip is provided with threaded holes, and the connecting part is a bolt, which simultaneously engages with the threaded holes on both locking strips.
[0010] Optionally, the locking strip is also provided with a lubrication channel communicating with the threaded hole, and a lubrication nozzle is provided in the lubrication channel for providing lubricating oil to the bolt.
[0011] Optionally, a steel frame may have multiple locking strips arranged in a ring, with each locking strip on one insulation box corresponding to and fitting with the locking strips on another insulation box.
[0012] Optionally, the steel structure frame includes: multiple first angle irons and multiple second angle irons, the multiple first angle irons are connected end to end in sequence, a second angle iron is provided at the connection position of two adjacent first angle irons, the second angle irons are perpendicularly connected to the two adjacent first angle irons respectively, and the multiple first angle irons and multiple second angle irons together enclose a prism-shaped space;
[0013] The insulation board includes an insulation back panel and multiple insulation side panels. The insulation back panel is simultaneously bonded to multiple first angle irons to close the third side of the steel structure frame. The insulation side panels are bonded to two adjacent second angle irons and a first angle iron connecting the two second angle irons to close the second side of the steel structure.
[0014] Optionally, the steel structure frame also includes a support frame, which includes horizontal support columns, vertical columns and diagonal support columns. The first surface of the horizontal support column is attached to the inner surface of the first angle iron. The vertical column is perpendicularly connected to the second surface of the horizontal support column, and the second surface is opposite to the first surface. One end of the diagonal support column is connected to the vertical column, and the other end is connected to the second surface.
[0015] Optionally, the insulation board is provided with a second half hole, and the two symmetrical second half holes on the two insulation boxes are spliced together to form a second through hole, and the inner wall of the second through hole is adapted to the outer wall of the pipe.
[0016] Optionally, the locking strip includes at least two straight sections and an arc section connecting two adjacent straight sections. The arc section and the straight sections are respectively attached to the outer surface of the steel structure frame. The arc surface of the arc section is perpendicular to the outer surface of the steel structure frame. The arc section is used to expose the first half hole or the second half hole.
[0017] The beneficial effects of this application include:
[0018] This application provides a wellhead insulation device, comprising: two insulation boxes, each including a steel frame and insulation panels. A first side of the steel frame is open, and a second side perpendicular to the first side and a third side opposite to the first side are respectively covered with insulation panels for sealing. A locking strip is provided on the second side. A first half-hole is provided on the insulation panel. The two insulation boxes are symmetrically arranged with their first sides touching. Two symmetrical first half-holes on the two insulation boxes are joined to form a first through-hole. The inner wall of the first through-hole is adapted to the outer wall of the wellhead. Two symmetrical locking strips on the two insulation boxes are touching and detachably connected by connectors. The aforementioned wellhead insulation device is formed by symmetrically joining two insulation boxes. Each insulation box includes a steel frame and insulation panels covering the steel frame. The steel frame can withstand significant external forces, and combined with the sealing effect of the insulation panels, it achieves excellent insulation and gives the wellhead insulation device a strong load-bearing capacity. Meanwhile, locking strips are installed on the two insulation boxes respectively, and the two symmetrical locking strips are connected together by connectors, making the wellhead insulation device easier to disassemble. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is one of the structural schematic diagrams of the wellhead insulation device provided in the embodiments of this application;
[0021] Figure 2 This is the second schematic diagram of the wellhead insulation device provided in the embodiments of this application;
[0022] Figure 3 This is a front view of the insulation box in the wellhead insulation device provided in the embodiments of this application;
[0023] Figure 4 A top view of the insulation box in the wellhead insulation device provided in the embodiments of this application;
[0024] Figure 5 A side view of the insulation box in the wellhead insulation device provided in the embodiments of this application;
[0025] Figure 6 This is one of the structural schematic diagrams of the locking strip in the wellhead insulation device provided in the embodiments of this application;
[0026] Figure 7 A partial structural schematic diagram of the locking strip in the wellhead insulation device provided in this application embodiment;
[0027] Figure 8 This is a front view of the steel structure frame in the wellhead insulation device provided in the embodiments of this application;
[0028] Figure 9 A top view of the steel structure frame in the wellhead insulation device provided in the embodiments of this application;
[0029] Figure 10 A side view of the steel structure frame in the wellhead insulation device provided in the embodiments of this application;
[0030] Figure 11 This is a schematic diagram of the supporting frame in the wellhead insulation device provided in the embodiments of this application;
[0031] Figure 12 This is the second schematic diagram of the locking strip in the wellhead insulation device provided in the embodiments of this application.
[0032] Icons: 10-Wellhead insulation device; 10a-Insulation box; 11-Steel structure frame; 11a-First side; 11b-Second side; 11c-Third side; 11d-Opening; 111-First angle iron; 111a-Inclined end face; 112-Second angle iron; 113-Support frame; 113a-Horizontal support column; 113b-Column; 113c-Inclined support column; 12-Insulation board; 12a-First half hole; 12b-Second half hole; 121-Insulation back plate; 122-Insulation side plate; 13-Seam strip; 13a-Threaded hole; 13b-Lubrication channel; 13c-Lubricating nozzle; 131-Straight section; 132-Circular section; 132a-Notch; 133-Connecting block; 14-First through hole; 15-Second through hole. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0034] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. It should be noted that, unless otherwise specified, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.
[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0036] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0037] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0038] Please refer to Figure 1 and Figure 2 This application provides a wellhead insulation device 10, comprising two insulation boxes 10a. The two insulation boxes 10a are hollow inside and symmetrically connected. After connection, the hollow areas inside the two insulation boxes 10a are joined together to form the insulation area of the wellhead insulation device 10. This wellhead insulation device 10 is used to insulate the wellheads of oil wells, water injection wells, natural gas wells, etc.
[0039] Please refer to the reference. Figures 3 to 5The insulated box 10a includes a steel frame 11 and insulation panels 12. The steel frame 11 has a first side 11a and a third side 11c, and a second side 11b, which is perpendicular to the first side 11a and the third side 11c. Taking a rectangular steel frame 11 as an example, assuming the first side 11a is the front side of the steel frame 11, the third side 11c is the rear side of the steel frame 11, and the second side 11b is the upper, lower, left, or right side of the steel frame 11. The first side 11a of the steel frame 11 is open to form an opening 11d, and the remaining sides are covered with insulation panels 12 to close the sides of the steel frame 11. The insulation panels 12 can be fixed to the steel frame 11 using self-drilling screws. The second side 11b of the steel frame 11 is provided with a locking strip 13, and one of the insulation panels 12 has a first half-hole 12a.
[0040] The first sides 11a of the two insulation boxes 10a are fitted together, and the internal hollow areas are connected through the openings 11d of the first sides 11a. Two symmetrical locking strips 13 on the two insulation boxes 10a are fitted together and detachably connected by a connector. The connector fixes the locking strips 13 on the two insulation boxes 10a together, thus securing the two insulation boxes 10a together. Removing the connector allows the two insulation boxes 10a to be separated. Two symmetrical first half-holes 12a on the two insulation boxes 10a are joined to form a first through hole 14. The first through hole 14 is used for wellhead passage, and the inner wall of the first through hole 14 is adapted to the outer wall of the wellhead, thereby fixing the wellhead insulation device 10 to the wellhead.
[0041] The aforementioned wellhead insulation device 10 is formed by symmetrically splicing two insulation boxes 10a. Each insulation box 10a includes a steel frame 11 and an insulation board 12 covering the steel frame 11. The steel frame 11 can withstand significant external forces, and when combined with the insulation board 12 for sealing, it achieves excellent insulation and gives the wellhead insulation device 10 a strong load-bearing capacity. Simultaneously, locking strips 13 are respectively installed on the two insulation boxes 10a, and the two symmetrical locking strips 13 are connected together by connectors, making the wellhead insulation device 10 easier to disassemble.
[0042] Optionally, the inner surface of the insulation board 12 is provided with a flame-retardant layer.
[0043] The flame-retardant layer enables the wellhead insulation device 10 to not only achieve excellent insulation but also provide flame retardancy, resulting in higher safety. It can be understood that the inner surface of the insulation board 12 refers to the surface of the insulation board 12 facing the hollow area inside the insulation box 10a.
[0044] The flame-retardant layer can be a ceramic flame-retardant layer, which is formed by coating ceramic material onto the inner surface of the insulation board 12. The continuous temperature resistance of ceramic material is between -40℃ and 160℃, and the instantaneous temperature resistance can reach 180℃. Using ceramic material to make a flame-retardant layer can achieve a very good flame-retardant effect.
[0045] The insulation board 12 can be a color steel sandwich panel, which includes two opposing metal panels and an insulating core (such as insulating rock wool) sandwiched between the two metal panels. Color steel sandwich panels have good heat insulation effect, are lightweight and environmentally friendly, and can also reduce water vapor condensation.
[0046] Alternatively, please refer to Figure 1 The locking strip 13 has threaded holes 13a, and the connecting part is a bolt. The bolt is threadedly engaged with the threaded holes 13a on both locking strips 13 to fix the two insulation boxes 10a together.
[0047] Furthermore, please refer to the following: Figure 3 The number of threaded holes 13a on a locking strip 13 is multiple, and the multiple threaded holes 13a are distributed at intervals along the length direction of the locking strip 13. Two symmetrical locking strips 13 are connected together by multiple bolts, thereby improving the reliability of the connection between the two insulation boxes 10a.
[0048] Similarly, the number of locking strips 13 on a steel frame 11 can also be multiple. The multiple locking strips 13 are distributed in a ring. The multiple locking strips 13 on one insulation box 10a correspond to and are connected to the multiple locking strips 13 on another insulation box 10a, thereby improving the reliability of the connection between the two insulation boxes 10a.
[0049] Alternatively, please refer to Figure 6 and Figure 7 The locking strip 13 is also provided with a lubrication channel 13b that communicates with the threaded hole 13a. The lubrication channel 13b is provided with a lubricating nozzle 13c, which is used to provide lubricating oil to the bolt.
[0050] The bolts are lubricated by the lubricating nozzle 13c, ensuring that they can be easily disassembled even after prolonged exposure to wind and sun or extreme weather conditions. If there are multiple threaded holes 13a on the locking strip 13, there are also multiple lubrication channels 13b, which are connected to the multiple threaded holes 13a one by one. Each lubrication channel 13b is equipped with a lubricating nozzle 13c to achieve one-to-one lubrication of the bolts.
[0051] Alternatively, please refer to Figures 8 to 10The steel frame 11 includes multiple first angle irons 111 and multiple second angle irons 112. The multiple first angle irons 111 are connected end to end. A second angle iron 112 is provided at the connection position of two adjacent first angle irons 111. The second angle irons 112 are perpendicularly connected to the two adjacent first angle irons 111. The multiple first angle irons 111 and multiple second angle irons 112 together enclose a prism-shaped space. The connections between two first angle irons 111 and between a first angle iron 111 and a second angle iron 112 can be achieved by welding.
[0052] Please refer to the reference. Figure 3 and Figure 4 The insulation board 12 includes an insulation back plate 121 and multiple insulation side plates 122. The insulation back plate 121 is simultaneously attached to multiple first angle irons 111 to close the third side 11c of the steel structure frame 11. The insulation side plates 122 are attached to two adjacent second angle irons 112 and the first angle irons 111 connecting the two second angle irons 112 to close the second side 11b of the steel structure.
[0053] It should be noted that the insulation back panel 121 can be attached to either the outer surface or the inner surface of the first angle iron 111. The figure shows an embodiment in which the insulation back panel 121 is attached to the outer surface of the first angle iron 111. Similarly, the insulation side panel 122 can be attached to either the outer surface or the inner surface of the first angle iron 111 and the second angle iron 112. The figure shows an embodiment in which the insulation side panel 122 is attached to the inner surface of the first angle iron 111 and the second angle iron 112.
[0054] For example, there are four first angle irons 111 and four second angle irons 112. The four first angle irons 111 are connected to form a rectangular frame, and the four second angle irons 112 are respectively placed at the four corners of the rectangular frame to enclose a quadrangular prism-shaped space together with the first angle irons 111. At this time, the steel structure frame 11 has four second sides 11b, and correspondingly, there are also four thermal insulation side plates 122, which respectively enclose the four second sides 11b of the steel structure frame 11.
[0055] To facilitate the connection of multiple first angle irons 111 and the installation of the insulation board 12, optionally, the two ends of the first angle irons 111 are cut to form inclined end faces 111a, and the ends of two first angle irons 111 are connected through their respective inclined end faces 111a. The inclination angle of the inclined end face 111a is related to the number of first angle irons 111. If there are four first angle irons 111, the inclination angle of the inclined end face 111a is 45°.
[0056] To improve the support strength of the steel frame 11, optionally, please refer to... Figure 8 and Figure 11The steel structure frame 11 also includes a support frame 113, which includes horizontal support columns 113a, vertical columns 113b, and diagonal support columns 113c. All three columns can be made of channel steel. The first surface of the horizontal support column 113a is in contact with the inner surface of the first angle iron 111. The vertical column 113b is perpendicularly connected to the second surface of the horizontal support column 113a, with the second surface opposite to the first surface. One end of the diagonal support column 113c is connected to the vertical column 113b, and the other end is connected to the second surface.
[0057] The number of support frames 113 can be two or more, and the two or more support frames 113 are distributed at intervals along the length of the steel structure frame 11.
[0058] Preferably, each support frame 113 has two upright columns 113b and two diagonal support columns 113c. The two upright columns 113b are symmetrically arranged on the horizontal support column 113a. One end of one diagonal support column 113c is connected to one upright column 113b, and the other end is connected to the second surface of the horizontal support column 113a. One end of the other diagonal support column 113c is connected to the other upright column 113b, and the other end is connected to the second surface of the horizontal support column 113a. The two diagonal support columns 113c are symmetrically arranged.
[0059] Generally, a pipe extends from the wellhead to allow energy to flow. Therefore, optionally, please refer to... Figure 2 The insulation board 12 is provided with a second half hole 12b. The two second half holes 12b on the two insulation boxes 10a are spliced together to form a second through hole 15. The second through hole 15 is used to allow the pipeline to extend out of the wellhead insulation device 10. The inner wall of the second through hole 15 is adapted to the outer wall of the pipeline.
[0060] Alternatively, please refer to Figure 6 and Figure 12 The seam strip 13 includes at least two straight portions 131 and an arc portion 132 connecting two adjacent straight portions 131. Please refer to the reference. Figures 3 to 5 The arc portion 132 and the straight portion 131 are respectively attached to the outer surface of the steel structure frame 11. The arc surface of the arc portion 132 is perpendicular to the outer surface of the steel structure frame 11. The arc portion 132 is used to expose the first half hole 12a or the second half hole 12b.
[0061] The straight portion 131 of the locking strip 13 can be an angle iron, and the arc portion 132 can be a bent angle iron. To ensure the bending effect, the outer edge of the angle iron forming the arc portion 132 is provided with a notch 132a. The arc portion 132 and the straight portion 131 can be connected (e.g., welded). The threaded hole 13a and the lubricating nozzle 13c are both provided on the connecting block 133.
[0062] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A wellhead insulation device, characterized in that, include: Two insulated boxes, each insulated box comprising a steel frame and an insulation board, wherein a first side of the steel frame is open to form an opening, a second side perpendicular to the first side and a third side opposite to the first side are respectively covered by the insulation board to close the box, the second side is provided with a locking strip, and the insulation board is provided with a first half-hole; The two insulation boxes are symmetrically arranged and their first sides are attached to each other. The two first half holes on the two insulation boxes are spliced together to form a first through hole. The inner wall of the first through hole is adapted to the outer wall of the wellhead. The two locking strips on the two insulation boxes are attached to each other and are detachably connected by a connector.
2. The wellhead insulation device as described in claim 1, characterized in that, The inner surface of the insulation board is provided with a flame-retardant layer.
3. The wellhead insulation device as described in claim 2, characterized in that, The insulation board is a color steel sandwich panel, and the flame-retardant layer is a ceramic flame-retardant layer.
4. The wellhead insulation device as described in claim 1, characterized in that, The locking strip is provided with threaded holes, and the connecting member is a bolt, which simultaneously engages with the threaded holes on two symmetrical locking strips.
5. The wellhead insulation device as described in claim 4, characterized in that, The locking strip is also provided with a lubrication channel communicating with the threaded hole, and a lubrication nozzle is provided in the lubrication channel for providing lubricating oil to the bolt.
6. The wellhead insulation device as described in claim 1, characterized in that, The number of locking strips on one of the steel structure frames is multiple, and the multiple locking strips are distributed in a ring. The multiple locking strips on one insulation box correspond one-to-one with the multiple locking strips on another insulation box.
7. The wellhead insulation device as described in claim 1, characterized in that, The steel structure frame includes: multiple first angle irons and multiple second angle irons. The multiple first angle irons are connected end to end in sequence. A second angle iron is provided at the connection position of two adjacent first angle irons. The second angle irons are perpendicularly connected to the two adjacent first angle irons respectively. The multiple first angle irons and multiple second angle irons together enclose a prism-shaped space. The insulation board includes an insulation back plate and multiple insulation side plates. The insulation back plate is simultaneously attached to multiple first angle irons to close the third side of the steel structure frame. The insulation side plates are attached to two adjacent second angle irons and the first angle irons connecting the two second angle irons to close the second side of the steel structure.
8. The wellhead insulation device as described in claim 7, characterized in that, The steel structure frame also includes a support frame, which includes horizontal support columns, vertical columns and diagonal support columns. The first surface of the horizontal support column is in contact with the inner surface of the first angle iron. The vertical column is perpendicularly connected to the second surface of the horizontal support column, and the second surface is opposite to the first surface. One end of the diagonal support column is connected to the vertical column and the other end is connected to the second surface.
9. The wellhead insulation device as described in claim 1, characterized in that, The insulation board is provided with a second half hole, and the two second half holes on the two insulation boxes are spliced together to form a second through hole, and the inner wall of the second through hole is adapted to the outer wall of the pipe.
10. The wellhead insulation device as described in claim 9, characterized in that, The locking strip includes at least two straight sections and an arc section connecting two adjacent straight sections. The arc section and the straight sections are respectively attached to the outer surface of the steel structure frame. The arc surface of the arc section is perpendicular to the outer surface of the steel structure frame. The arc section is used to expose the first half hole or the second half hole.