Wellhead heating device for petroleum and natural gas exploitation
By installing an insulation layer and clamping components outside the diversion pipe of the wellhead heating device, the problem of uneven heating in traditional heating furnaces was solved, achieving stable transmission of heavy oil and improving the economic benefits of oil extraction.
Patent Information
- Application Number
- CN202423162093.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The burner nozzles of traditional wellhead heaters are prone to clogging, resulting in uneven heating and affecting the economic benefits of heavy oil thermal recovery.
The drainage pipe is equipped with an external insulation layer and clamping components. The insulation layer is evenly fixed to the outer wall of the pipe by clamp groups and installation ring groups, and a heating unit is added to ensure uniform heat distribution.
This achieves uniform distribution of the insulation layer, prevents heavy oil from solidifying, ensures smooth transmission of oil and natural gas, and improves the economic benefits of thermal recovery.
Smart Images
Figure CN223499103U_ABST
Abstract
Description
Technical Field
[0001] This application relates to a wellhead heating device, and more particularly to a wellhead heating device for oil and gas extraction. Background Technology
[0002] Oil extraction refers to the process of digging and extracting oil from areas where oil reserves are found. During the extraction process, oil and gas flow from the reservoir to the bottom of the well, rise from the bottom to the wellhead, and are then transported to their destination for processing via pipelines. Because the heavy oil contained within the well is highly susceptible to solidification due to temperature changes, technicians typically use heating devices to heat the wellhead to prevent solidified heavy oil from clogging the pipelines.
[0003] Traditionally, a heating furnace is used to heat the wellhead. The process involves connecting the furnace to the wellhead via a flange, allowing oil and natural gas to flow through the furnace's spiral coiled tubes before being transported outwards. The oil and natural gas within the tubes are heated by absorbing heat from the flame generated by the furnace's burner. However, due to impurities in the fuel and residual combustion products, the burner nozzles of the wellhead heating furnace are prone to clogging. This results in an irregularly shaped flame that cannot evenly surround the furnace tubes, leading to uneven heating. Consequently, some of the heavy oil flowing through the tubes condenses on the furnace's inner wall, severely impacting the economic benefits of heavy oil thermal recovery. Utility Model Content
[0004] To address the aforementioned problems, this application provides a wellhead heating device for oil and gas extraction, comprising:
[0005] The diversion pipeline is connected to the wellhead and has an external transmission pipeline.
[0006] The insulation unit includes an insulation layer and a clamping assembly;
[0007] Several of the aforementioned insulation layers are matched and wound around the outer wall of the drainage pipe to uniformly wrap the insulation layer around the outer wall of the drainage pipe;
[0008] The clamping assembly is provided in multiple parts and is used to clamp the insulation layer at the drainage pipe.
[0009] A heating unit is used to heat the insulation layer. It is designed to match the clamping assembly and is installed between two adjacent clamping assemblies, which are arranged in a direction parallel to the axial direction of the drainage pipe.
[0010] Furthermore, each clamping assembly includes a clamp group and a mounting ring group; each mounting ring is fitted onto the joint end of two adjacent clamps and is connected to the clamps.
[0011] Furthermore, each clamp has connecting blocks at both ends, one of which can connect with the connecting block of its adjacent clamp; the mounting ring is fitted onto the outer wall of the two connected connecting blocks.
[0012] Furthermore, each mounting ring includes a collar, an extension plate, and a clamping fastener;
[0013] The collar is fitted onto the outer wall of two adjacent connecting blocks;
[0014] The extension plate is connected to the side wall of the collar;
[0015] The clamping device is provided in two parts; the two clamping devices are arranged in a direction parallel to the axial direction of the drainage pipe; one end of each clamping device is movably installed on the bottom end of the extension plate through the mounting seat, and the other end is clamped and connected to the clamp.
[0016] Furthermore, the bottom end of the extension plate is provided with a groove parallel to the axial direction of the drainage pipe; the inner walls of the two grooves in the extension direction of the groove are respectively equipped with mounting seats.
[0017] Furthermore, the clamping device includes a telescopic rod, a spring, and a clamping plate;
[0018] One end of the telescopic rod and one end of the spring are installed in the corresponding mounting bases, and the other end of the telescopic rod and the other end of the spring are connected to the clamp plate; the side wall of the clamp plate is fixedly connected to the clamp and is used to limit the movement of the mounting ring at the clamp; the spring is sleeved on the outer wall of the telescopic rod and extends along the extension direction of the slide groove to limit the extension range of the telescopic rod.
[0019] When the spring is in its natural state, the distance between the two clamps is less than the thickness of the clamp.
[0020] Furthermore, the clamp plate is connected to the other end of the telescopic rod and the other end of the spring near its top; the clamp plate is provided with a plug-in post on the side wall near its bottom and facing the clamp; the clamp surface is provided with a plug-in hole that matches the plug-in post.
[0021] Furthermore, each insulation layer consists of insulation cloth filled with insulation cotton.
[0022] Furthermore, the heating unit includes multiple connecting plates and multiple heating elements; each connecting plate is matched and connected between two adjacent clamps; all connecting plates are arranged around the outer wall of the insulation layer along the circumference of the drainage pipe; the heating elements are installed on the side of the connecting plate facing the insulation layer.
[0023] Furthermore, each clamp has a mounting hole on its clamp surface; when multiple clamp sets are sequentially installed on the outer wall of the insulation layer along the axial direction of the drainage pipe, the mounting holes of two adjacent clamps in the direction parallel to the axial direction of the drainage pipe face each other; each connecting plate has a protruding edge with a matching mounting hole at both ends along its extension direction.
[0024] Compared with the prior art, the beneficial effects of this utility model are:
[0025] The clamp assembly, in conjunction with the installation ring assembly, surrounds the outer wall of the insulation layer along the circumference of the drainage pipe. Each installation ring has two clamping fasteners that hold the clamp in place, and the insert pins of the clamping plate are inserted into the clamp. This simple operation also prevents the installation ring from slipping off the clamp's connecting block. The assembly of these clamps ensures the insulation layer is evenly distributed and securely clamped to the outer wall of the drainage pipe, preventing localized low temperatures and avoiding the solidification of heavy oil within the pipe, which could affect the transmission of oil and natural gas. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this application 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the structure of an oil and gas wellhead heating device according to an embodiment of this application;
[0028] Figure 2 This is a front view of an oil and gas wellhead heating device according to an embodiment of this application;
[0029] Figure 3 This is a partial enlarged view (A) showing the mounting ring of an oil and gas wellhead heating device being assembled with a clamp, according to an embodiment of this application.
[0030] Figure 4 This is a schematic diagram of the installation ring of an oil and gas wellhead heating device according to an embodiment of this application;
[0031] Figure 5 This is a schematic diagram of the heating unit of an oil and gas wellhead heating device according to an embodiment of this application.
[0032] Figure label:
[0033] 1. Drainage pipe;
[0034] 2. Insulation layer;
[0035] 30. Clamp; 300. Mounting hole; 301. Connecting block; 31. Mounting ring; 310. Collar; 311. Extension plate; 3110. Slide groove; 312. Clamping plate; 320. Clamping plate; 321. Telescopic rod; 322. Spring; 323. Mounting base; 324. Insertion post;
[0036] 4. Heating unit; 40. Connecting plate; 400. Protruding edge; 41. Heating element. Detailed Implementation
[0037] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.
[0038] In the description of this utility model, it should be understood that the terms "length", "thickness", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0039] Furthermore, in the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.
[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0041] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the present invention. Furthermore, reference numerals may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments discussed. In addition, examples of various specific processes and materials are provided in the present invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0042] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0043] This utility model embodiment provides a wellhead heating device for oil and gas extraction. Please refer to [reference needed]. Figures 1-5 The wellhead heating device for oil and gas extraction includes a diversion pipe 1, an insulation unit, and a heating unit.
[0044] Specifically,
[0045] The diversion pipe 1 is installed at the wellhead via a flange. The diversion pipe 1 is connected to an external transmission pipeline. When oil and natural gas flow from the well to the wellhead, the oil and natural gas can be diverted to the external transmission pipeline through the diversion pipe 1.
[0046] The insulation unit includes several insulation layers 2 and a clamping assembly. The insulation layers 2 are wrapped around the outer wall of the drainage pipe and are securely installed at the drainage pipe 1 by the clamping assembly. The number of insulation layers 2 wrapped around the outer wall of the drainage pipe is adapted to the length of the drainage pipe.
[0047] Insulation layer 2 consists of insulation cloth filled with insulation cotton. The insulation cloth is wrapped around the outer wall of the drainage pipe circumferentially, ensuring that the outer wall of the drainage pipe is evenly covered with insulation cloth. This insulation layer 2 slows down the transfer of heat from the oil and natural gas flowing from the well to the outside, thereby reducing the solidification rate of heavy oil. When at least two insulation layers are required for drainage pipe 1, adjacent insulation layers are sequentially wrapped around the outer wall of the drainage pipe axially, with the axial end faces of the two insulation layers touching.
[0048] The clamping assembly is used to fix the insulation layer 2 at the drainage pipe 1. Each clamping assembly includes a clamp group and an installation ring group. The connection between adjacent clamps is achieved by simultaneously fitting the installation ring 31 onto the connecting end of two adjacent clamps and connecting the installation ring 31 to the clamp. Preferably, a clamp group is provided on the outer wall of the insulation layer near both ends.
[0049] Each clamp assembly comprises multiple clamps 30 arranged circumferentially around the drainage pipe, allowing the clamp assembly to fit over the outer wall of the insulation layer. Each clamp has connecting blocks 301 at both ends; each connecting block 301 of each clamp can connect with the connecting blocks 301 of its adjacent clamps. Each clamp surrounding the outer wall of the insulation layer has mounting holes 300 on its clamp surface. When multiple clamp assemblies are sequentially arranged along the axial direction of the drainage pipe on the outer wall of the insulation layer, the mounting holes 300 of adjacent clamps parallel to the axial direction of the drainage pipe face each other. Each clamp has insertion holes on its two clamp surfaces parallel to the axial direction of the drainage pipe.
[0050] The mounting rings 31 are fitted onto the outer walls of two connecting blocks, allowing the connecting ends of adjacent clamps to be limited and fixed by the mounting rings 31. Each mounting ring 31 includes a collar 310, an extension plate 311, and clamping members. The collar 310 is fitted onto the outer walls of two connecting blocks, making it difficult for the connecting ends of adjacent clamps to separate. The extension plate 311 is connected to one side wall of the collar. A groove 3110 parallel to the axial direction of the drainage pipe is provided at the bottom end of the extension plate, and mounting seats 323 are respectively installed on the inner walls of the two grooves of the groove 3110 in its extension direction. The clamping members are matched and connected to the mounting seats 323, that is, each extension plate 311 is equipped with two clamping members. The clamping members are clamped and connected to the clamps, and include a telescopic rod 321, a spring 322, and a clamping plate 320.
[0051] Each mounting base 323 contains one end of a telescopic rod and one end of a spring. The spring 322 is fitted onto the outer wall of the telescopic rod 321 and extends along the direction of the sliding groove to limit the extension range of the telescopic rod 321. The top ends of the clamping plates are connected to the other ends of the telescopic rod and the springs, respectively, so that the two clamping plates 320 mounted on the mounting base 323 move in opposite directions as the spring 322 and the telescopic rod 321 contract. When the spring 322 is in its natural state, the distance between the two clamping plates 320 is less than the thickness of the clamp 30, allowing the clamp 30 to be clamped by the two clamping plates 320 mounted on its corresponding mounting base 323. The clamping plate 320 has a matching insertion post 324 on its side wall near its bottom end and facing the clamp 30; that is, the outer diameter of the insertion post 324 is equal to the diameter of the insertion hole, allowing the insertion post 324 to be inserted into the insertion hole.
[0052] By compressing the telescopic rod 321 in conjunction with the spring 322, the plug pin 325 can be inserted into the plug hole. During the process of the spring 322 returning to its natural length, since the thickness of the clamp 30 is greater than the distance between the two clamping plates 320 when the spring 322 is at its natural length, the clamp 30 is clamped between the two clamping plates 320, thereby preventing the mounting ring 31 from sliding out from the top of the connecting block 301.
[0053] The heating unit includes a connecting plate 40 and a heating element 41. The connecting plate 40 is circumferentially arranged around the outer wall of the insulation layer, matching clamps 30. That is, each end of the connecting plate 40 is connected to a clamp 30. Specifically, this can be achieved by providing protruding edges 400 with matching mounting holes 300 at both ends of the connecting plate 40 along its extension direction, and installing the protruding edges 400 into the corresponding mounting holes 300. A heating element 41 is installed on the side of the connecting plate 40 facing the insulation layer, and the heating element 41 heats the insulation layer 2 to maintain a constant temperature range of the insulation layer 2.
[0054] Based on the above embodiments, the working principle of this application is as follows:
[0055] An insulation layer 2 is wrapped around the outer wall of the drainage pipe. The installation method of one clamping assembly is as follows: The mounting rings are respectively fitted onto the outer wall of the corresponding connecting blocks. The clamping plates 320 are pressed to compress the springs 322, so that a portion of the clamp is positioned between the two clamping plates 320. The clamping plates 320 are released. During the reset process of the springs 322, the insertion pins 324 are inserted into the clamps 30. Simultaneously, the two clamping plates 320 of each mounting ring 31 clamp the clamps 30 under the action of the springs 322, which are not yet fully reset and are in a compressed state. After one end of the heating unit is inserted into the mounting hole 300 of the clamps 30 of this clamping assembly, the clamping position of another clamping assembly on the insulation layer 2 is determined according to the length of the heating unit 4. The installation method of the other clamping assembly is the same as above.
[0056] After the clamping components are installed, before the oil and natural gas flow to the wellhead, the insulation layer 2 is heated by the heating unit. The insulation layer absorbs heat and maintains the insulation layer within a certain temperature range. When the extracted oil and natural gas flow to the wellhead, it flows through the diversion pipe 1 in a flowing state and is transported to the aggregate conveying pipe.
[0057] Based on the above embodiments, the advantages of this application are:
[0058] The clamps 30 are assembled with the mounting rings to surround the outer wall of the insulation layer along the circumference of the drainage pipe. Each mounting ring 31 has two clamping fasteners that hold the clamp 30 in place, and the insertion post 324 of the clamping plate 320 is inserted into the clamp 30. This simple assembly prevents the mounting ring 31 from slipping off the connecting block 301 of the clamp. The clamp assembly ensures that the insulation layer 2 is evenly distributed and securely fastened to the outer wall of the drainage pipe.
[0059] This prevents localized low temperatures in the drainage pipeline, avoiding the solidification of heavy oil within the pipeline that could affect the transmission of oil and natural gas.
Claims
1. A wellhead heating device for oil and gas extraction, characterized in that, It includes: The diversion pipeline is connected to the wellhead and has an external transmission pipeline. The insulation unit includes an insulation layer and a clamping assembly; Several of the aforementioned insulation layers are matched and wound around the outer wall of the drainage pipe to uniformly wrap the insulation layer around the outer wall of the drainage pipe; The clamping assembly is provided in multiple parts and is used to clamp the insulation layer at the drainage pipe. A heating unit is used for uniform heating of the insulation layer. It is designed to match the clamping assembly and is installed between two adjacent clamping assemblies, which are arranged in a direction parallel to the axial direction of the drainage pipe.
2. The oil and gas wellhead heating device according to claim 1, characterized in that: Each clamping assembly includes a clamp group and a mounting ring group; each mounting ring is fitted onto the joint end of two adjacent clamps and is connected to the clamps.
3. The oil and gas wellhead heating device according to claim 2, characterized in that: Each clamp has a connecting block at both ends, one of which can connect with the connecting block of its adjacent clamp; the mounting ring is fitted onto the outer wall of the two connected connecting blocks.
4. The oil and gas wellhead heating device according to claim 3, characterized in that: Each mounting ring includes a collar, an extension plate, and a clamping device; The collar is fitted onto the outer wall of two adjacent connecting blocks; The extension plate is connected to the side wall of the collar; The clamping device is provided in two parts; the two clamping devices are arranged in a direction parallel to the axial direction of the drainage pipe; one end of each clamping device is movably installed on the bottom end of the extension plate through the mounting seat, and the other end is clamped and connected to the clamp.
5. The oil and gas wellhead heating device according to claim 4, characterized in that: The bottom end of the extension plate is provided with a groove parallel to the axial direction of the drainage pipe; the inner walls of the two grooves in the extension direction of the groove are respectively equipped with mounting seats.
6. The oil and gas wellhead heating device according to claim 4, characterized in that: The clamping device includes a telescopic rod, a spring, and a clamping plate; One end of the telescopic rod and one end of the spring are installed in the corresponding mounting bases, and the other end of the telescopic rod and the other end of the spring are connected to the clamp plate; the side wall of the clamp plate is fixedly connected to the clamp and is used to limit the movement of the mounting ring at the clamp; the spring is sleeved on the outer wall of the telescopic rod and extends along the extension direction of the slide groove to limit the extension range of the telescopic rod. When the spring is in its natural state, the distance between the two clamps is less than the thickness of the clamp.
7. The oil and gas wellhead heating device according to claim 6, characterized in that: The clamp plate is connected to the other end of the telescopic rod and the other end of the spring near its top; the clamp plate is provided with a plug-in post on the side wall near its bottom and facing the clamp; the clamp surface is provided with a plug-in hole that matches the plug-in post.
8. The oil and gas wellhead heating device according to claim 1, characterized in that: Each insulation layer consists of insulation cloth filled with insulation cotton.
9. The oil and gas wellhead heating device according to claim 2, characterized in that: The heating unit includes multiple connecting plates and multiple heating elements; each connecting plate is matched and connected between two adjacent clamps; all connecting plates are arranged around the outer wall of the insulation layer along the circumference of the drainage pipe; the heating elements are installed on the side of the connecting plate facing the insulation layer.
10. The oil and gas wellhead heating device according to claim 9, characterized in that: Each clamp has a mounting hole on its clamping surface; when multiple clamp sets are sequentially installed on the outer wall of the insulation layer along the axial direction of the drainage pipe, the mounting holes of two adjacent clamps in the direction parallel to the axial direction of the drainage pipe face each other; each connecting plate has a protruding edge with a matching mounting hole at both ends along its extension direction.