Heating device for Christmas tree

Abstract

The utility model discloses a heating device for a Christmas tree, which belongs to the technical field of Christmas trees and comprises a Christmas tree main body and a water storage tank, a lengthened main pipe is arranged on the Christmas tree main body, a heating box is fixedly sleeved on the outer side of the lengthened main pipe, and a return pipe is fixedly sleeved on one side of the top end of the heating box. And the end part of the return pipe is fixedly connected to the inner cavity of the water storage tank in a sleeving manner. According to the Christmas tree, the lengthened main pipe is arranged on the Christmas tree body, the heating box is fixedly connected to the outer side of the lengthened main pipe in a sleeved mode, hot water flows in an inner cavity of the heating box through cooperation of the water storage tank, the switch valve, the water pump, the water guide pipe, the heating furnace, the water inlet pipe, the heating box and the backflow pipe, and meanwhile the spiral guide plate is matched to guide the hot water in the heating box. The time of heating oil in the lengthened main pipe by hot water is effectively prolonged, and the oil heating effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of oil wellhead technology, and more specifically, to a heating device for oil wellheads. Background Technology

[0002] A Christmas tree is a wellhead device used to extract oil in flowing wells and mechanically operated wells. It is the main equipment at the top of an oil and gas well for controlling and regulating oil and gas production. The Christmas tree consists of valves, reducers, nozzles, and piping fittings, and is used to control production and provide conditions for well workover operations such as wireline, cable, and coiled tubing. As the weather gets colder, the temperature of the Christmas tree and pipelines drops, causing the crude oil inside to cool down as well. The crude oil freezes before reaching the metering station, thus requiring heating of the Christmas tree.

[0003] A search revealed that utility model patent CN204920907U discloses a heating device for a wellhead, including a wellhead with a three-way or four-way valve, a water recovery tank, a heater, a water pump, and an insulation box. The insulation box is installed on the wellhead and connected to the water recovery tank. The water recovery tank is connected to the heater via the water pump, and the heater is connected to the insulation box. Under the action of the water pump, the medium water circulates between the insulation box, the water recovery tank, and the heater, heating the wellhead and preventing ice blockage, thus improving the working efficiency of the oilfield.

[0004] However, the aforementioned patent has the following shortcomings: the oil flows at a certain speed in the main pipeline of the wellhead, and when the insulation box is installed inside the main pipeline, the rate of heat exchange between the oil and the insulation box is not easily guaranteed, affecting the heating effect; in addition, the lack of insulation for other pipelines in the wellhead can also easily cause the oil temperature to drop. Therefore, we propose a heating device for the wellhead. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a heating device for oil well trees.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A heating device for a wellhead tree includes a wellhead body and a water storage tank. An extended main pipe is installed on the wellhead body, and a heating box is fixedly sleeved on the outer side of the extended main pipe. A return pipe is fixedly sleeved on one side of the top of the heating box, and the end of the return pipe is fixedly sleeved to the inner cavity of the water storage tank. A switch valve is fixedly installed at the bottom of the water storage tank, and a water pump is fixedly installed at the bottom of the switch valve. A water guide pipe is fixedly connected to the output end of the water pump, and a heating furnace is fixedly connected to the end of the water guide pipe. A water inlet pipe is fixedly connected to the output end of the heating furnace, and the end of the water inlet pipe is fixedly sleeved to the bottom of the inner cavity of the heating box. A spiral guide plate is provided on the inner wall of the heating box, and a heat preservation mechanism is provided on the outer side of the wellhead body.

[0008] As a preferred embodiment of this utility model, the insulation mechanism includes a rear insulation box and a front insulation box sleeved on the outside of the main body of the oil well. Mounting seats are fixedly connected to both sides of the rear insulation box and the front insulation box, and threaded holes are opened on the mounting seats. Bolts are threaded into the threaded holes. A sealing door is hinged to the front of the front insulation box. The inner wall of the sealing door is provided with a first insulation cotton. The inner walls of the rear insulation box and the front insulation box are provided with a second insulation cotton.

[0009] As a preferred embodiment of this utility model, the rear insulation box and the front insulation box are provided with first through grooves on both sides and the top surface, and the inner side of the first through groove is in contact with the outer side of the oil outlet pipeline of the main body of the oil well.

[0010] As a preferred embodiment of this utility model, a second through groove is provided on one side of the rear insulation box and the front insulation box, and the water inlet pipe passes through the inner cavity of the second through groove, with the inner side of the second through groove and the outer side of the water inlet pipe fitting together.

[0011] As a preferred embodiment of this utility model, a third through groove is provided on the other side of the rear insulation box and the front insulation box, and the return pipe passes through the inner cavity of the third through groove, with the inner side of the third through groove and the outer side of the return pipe fitting together.

[0012] As a preferred embodiment of this utility model, the bottom of the rear insulation box and the front insulation box are provided with a fourth through groove, the extended main tube passes through the inner cavity of the fourth through groove, and the inner side of the fourth through groove and the outer side of the extended main tube are in contact with each other.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) In this utility model, by setting an extended main pipe on the main body of the oil well, and fixing a heating box on the outside of the extended main pipe, the hot water flows in the inner cavity of the heating box by the cooperation of the water storage tank, switch valve, water pump, water guide pipe, heating furnace, water inlet pipe, heating box and return pipe. At the same time, the spiral guide plate guides the hot water in the heating box, effectively increasing the heating time of the oil in the extended main pipe by the hot water, and ensuring the heating effect of the oil.

[0015] (2) In this utility model, a rear insulation box and a front insulation box are fitted on the outside of the main body of the oil production tree by means of the mounting base, threaded hole and bolt. The rear insulation box, the front insulation box, the first insulation cotton and the second insulation cotton are used to protect and insulate the outside of the main body of the oil production tree, so as to avoid the main body of the oil production tree being affected by the external low temperature. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the oil well tree of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the rear insulation box and the front insulation box of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the heating box of this utility model;

[0020] Figure 5 This is a cross-sectional view of the rear insulation box and the front insulation box of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Main body of the wellhead; 2. Extended main pipe; 3. Heating box; 4. Spiral guide plate; 5. Water inlet pipe; 6. Heating furnace; 7. Water storage tank; 8. Switch valve; 9. Water pump; 10. Water guide pipe; 11. Return pipe; 12. Insulation mechanism; 13. Rear insulation box; 14. Front insulation box; 15. Mounting base; 16. Threaded hole; 17. Bolt; 18. First through slot; 19. Second through slot; 20. Third through slot; 21. Sealing door; 22. First insulation cotton; 23. Second insulation cotton; 24. Fourth through slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 1-5 A heating device for a wellhead includes a wellhead body 1 and a water storage tank 7. An extended main pipe 2 is provided on the wellhead body 1. A heating box 3 is fixedly sleeved on the outside of the extended main pipe 2. A return pipe 11 is fixedly sleeved on one side of the top of the heating box 3. The end of the return pipe 11 is fixedly sleeved to the inner cavity of the water storage tank 7. A switch valve 8 is fixedly installed at the bottom of the water storage tank 7. A water pump 9 is fixedly installed at the bottom of the switch valve 8. A water guide pipe 10 is fixedly connected to the output end of the water pump 9. A heating furnace 6 is fixedly connected to the end of the water guide pipe 10. A water inlet pipe 5 is fixedly connected to the output end of the heating furnace 6. The end of the water inlet pipe 5 is fixedly sleeved to the bottom of the inner cavity of the heating box 3. A spiral guide plate 4 is provided on the inner wall of the heating box 3. A heat preservation mechanism 12 is provided on the outside of the wellhead body 1.

[0028] In this embodiment, insulation cotton is provided on the outside of the water inlet pipe 5, the water guide pipe 10 and the return pipe 11. The insulation cotton is used to keep the water flowing in the water inlet pipe 5, the water guide pipe 10 and the return pipe 11 warm, so as to avoid excessive water temperature loss.

[0029] For details, please refer to Figure 3The insulation mechanism 12 includes a rear insulation box 13 and a front insulation box 14 fitted on the outside of the main body 1 of the oil well. Mounting seats 15 are fixedly connected to both sides of the rear insulation box 13 and the front insulation box 14 respectively. Threaded holes 16 are opened on the mounting seats 15, and bolts 17 are threaded on the threaded holes 16. A sealing door 21 is hinged to the front of the front insulation box 14. The inner wall of the sealing door 21 is provided with first insulation cotton 22. The inner walls of the rear insulation box 13 and the front insulation box 14 are provided with second insulation cotton 23.

[0030] In this embodiment, the main body 1 of the oil well tree is insulated by the cooperation of the rear insulation box 13, the front insulation box 14, the second insulation cotton 23 and the first insulation cotton 22, and the main body 1 of the oil well tree is operated by opening the sealing door 21.

[0031] For details, please refer to Figure 3-4 The rear insulation box 13 and the front insulation box 14 are provided with first through grooves 18 on both sides and the top surface. The inner side of the first through groove 18 is in contact with the outer side of the oil outlet pipeline of the main body of the oil tree 1.

[0032] In this embodiment, the first through groove 18 is used to facilitate the oil outlet pipeline of the main body 1 of the oil well to pass through to the outside of the rear insulation box 13 and the front insulation box 14.

[0033] For details, please refer to Figures 1 to 3 A second through groove 19 is provided on one side of the rear insulation box 13 and the front insulation box 14. The water inlet pipe 5 passes through the inner cavity of the second through groove 19, and the inner side of the second through groove 19 and the outer side of the water inlet pipe 5 are in contact.

[0034] In this embodiment, the second through groove 19 is used to facilitate the rear insulation box 13 and the front insulation box 14 to be fitted onto the outside of the water inlet pipe 5.

[0035] For details, please refer to Figure 1 , Figure 2 and Figure 5 A third through groove 20 is provided on the other side of the rear insulation box 13 and the front insulation box 14. The return pipe 11 passes through the inner cavity of the third through groove 20, and the inner side of the third through groove 20 and the outer side of the return pipe 11 are in contact.

[0036] In this embodiment, the third through slot 20 facilitates the rear insulation box 13 and the front insulation box 14 to be fitted onto the outside of the return pipe 11.

[0037] For details, please refer to Figure 1 , Figure 2 and Figure 5 The bottom of the rear insulation box 13 and the front insulation box 14 are provided with a fourth through groove 24, and the extended main tube 2 passes through the inner cavity of the fourth through groove 24. The inner side of the fourth through groove 24 and the outer side of the extended main tube 2 are in contact with each other.

[0038] In this embodiment, the fourth through slot 24 facilitates the rear insulation box 13 and the front insulation box 14 to be fitted onto the outside of the extended main pipe 2.

[0039] Working principle: During use, an extended main pipe 2 is installed at the lower part of the main body 1 of the oil well, and a heating box 3 is fitted on the outside of the extended main pipe 2. A rear insulation box 13 and a front insulation box 14 are fitted on the outside of the main body 1 of the oil well. The rear insulation box 13 and the front insulation box 14 are fixedly installed by threaded holes 16 and bolts 17. When the oil is discharged from the extended main pipe 2, the switch valve 8 is opened and the water pump 9 is started to draw water from the water storage tank 7. The water is introduced into the heating furnace 6 through the water guide pipe 10. The heating furnace 6 heats the water. The heated water is introduced into the inner cavity of the heating box 3 through the water inlet pipe 5. The hot water entering the heating box 3 is used to heat the oil in the extended main pipe 2. In addition, the spiral guide plate 4 is used to guide the water in the heating box 3, increasing the flow time of the hot water in the heating box 3, ensuring that the hot water can effectively heat the oil in the extended main pipe 2. The heated hot water flows back to the inner cavity of the water storage tank 7 through the return pipe 11, so that the water can be recycled. In addition, the main body of the oil well 1 is insulated directly by the cooperation of the rear insulation box 13, the front insulation box 14, the second insulation cotton 23 and the first insulation cotton 22, effectively preventing the oil in the main body of the oil well 1 from being affected by the external low temperature.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A heating device for a wellhead, comprising a wellhead body (1) and a water storage tank (7), characterized in that: An extended main pipe (2) is provided on the main body (1) of the oil production tree. A heating box (3) is fixedly sleeved on the outside of the extended main pipe (2). A return pipe (11) is fixedly sleeved on one side of the top of the heating box (3). The end of the return pipe (11) is fixedly sleeved to the inner cavity of the water storage tank (7). A switch valve (8) is fixedly installed at the bottom of the water storage tank (7). A water pump (9) is fixedly installed at the bottom of the switch valve (8). A water guide pipe (10) is fixedly connected to the output end of the water pump (9). A heating furnace (6) is fixedly connected to the end of the water guide pipe (10). A water inlet pipe (5) is fixedly connected to the output end of the heating furnace (6). The end of the water inlet pipe (5) is fixedly sleeved to the bottom of the inner cavity of the heating box (3). A spiral guide plate (4) is provided on the inner wall of the heating box (3). A heat preservation mechanism (12) is provided on the outside of the main body (1) of the oil production tree.

2. The heating device for an oil wellhead according to claim 1, characterized in that: The insulation mechanism (12) includes a rear insulation box (13) and a front insulation box (14) fitted on the outside of the main body (1) of the oil well. The rear insulation box (13) and the front insulation box (14) are respectively fixedly connected to the two sides of the mounting base (15). The mounting base (15) is provided with threaded holes (16). Bolts (17) are threaded on the threaded holes (16). The front of the front insulation box (14) is hinged with a sealing door (21). The inner wall of the sealing door (21) is provided with a first insulation cotton (22). The inner walls of the rear insulation box (13) and the front insulation box (14) are provided with a second insulation cotton (23).

3. A heating device for an oil wellhead according to claim 2, characterized in that: The rear insulation box (13) and the front insulation box (14) are provided with first through grooves (18) on both sides and the top surface. The inner side of the first through groove (18) is in contact with the outer side of the oil outlet pipeline of the main body of the oil tree (1).

4. A heating device for an oil wellhead according to claim 2, characterized in that: A second through groove (19) is provided on one side of the rear insulation box (13) and the front insulation box (14). The water inlet pipe (5) passes through the inner cavity of the second through groove (19). The inner side of the second through groove (19) and the outer side of the water inlet pipe (5) are in contact.

5. A heating device for an oil wellhead according to claim 2, characterized in that: A third through groove (20) is provided on the other side of the rear insulation box (13) and the front insulation box (14). The return pipe (11) passes through the inner cavity of the third through groove (20). The inner side of the third through groove (20) and the outer side of the return pipe (11) are in contact.

6. A heating device for an oil wellhead according to claim 2, characterized in that: The bottom of the rear insulation box (13) and the front insulation box (14) are provided with a fourth through groove (24), the extended main tube (2) passes through the inner cavity of the fourth through groove (24), and the inner side of the fourth through groove (24) and the outer side of the extended main tube (2) are in contact.

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