Gas production process pipeline system with heating function

Abstract

The utility model relates to the technical field of natural gas production and transportation equipment, in particular to a gas production process pipeline system with a heating function, which is characterized in that a heating mechanism is arranged on a gas conveying pipeline behind a gas production tree to heat fluid in one gas conveying pipeline, so that the temperature of the fluid is increased; and then the heated fluid is introduced into the other gas conveying pipeline to be input from the top of the tank body of the gas-liquid separation mechanism together, so that the overall temperature of the fluid entering the gas-liquid separation mechanism can be improved, the probability of ice blockage in the gas-liquid separation mechanism is reduced, and meanwhile, the two gas conveying pipelines can be adjusted through opening and closing of the first valve and the second valve, so that the gas-liquid separation mechanism is more stable. The flow direction of output fluid of the gas production tree is controlled, the two gas conveying pipelines can work independently or cooperatively, the ice blockage situation in the gas-liquid separation mechanism is avoided to the maximum extent, in addition, the heating mechanism is additionally arranged on the pipeline, and compared with the heating mechanism additionally arranged on the gas-liquid separation mechanism, the heating mechanism is more convenient and faster to use. And the improvement cost is reduced while a better ice blockage prevention effect is obtained.

Description

Technical Field

[0001] This utility model relates to the technical field of natural gas extraction and transportation equipment, and in particular to a gas extraction pipeline system with heating. Background Technology

[0002] During natural gas extraction, the high-pressure fluid in the wellbore is depressurized by a wellhead tree before being transmitted. After throttling, the fluid cools down due to energy loss, forming hydrates that can easily cause ice blockage at the throttling valve. Existing solutions mainly involve adding electric heating or catalysts at the throttling valve location to reduce ice blockage. However, the fluid after depressurization at the throttling valve generally continues to enter a gas-liquid separation unit for further gas-liquid separation. The fluid enters from the top of the gas-liquid separation unit and undergoes further depressurization and separation. The liquid accumulates at the bottom of the gas-liquid separation unit and needs to be drained periodically. However, because the fluid temperature drops further in the gas-liquid separation unit, and the liquid is more likely to accumulate, ice blockage is prone to occur in the gas-liquid separation unit, especially in the bottom area, during cold seasons. Conventional measures such as electric heating and catalyst addition require large-scale installations in the gas-liquid separation unit, consuming a lot of energy and incurring high modification costs. Utility Model Content

[0003] The purpose of this invention is to overcome the problem of ice blockage in the bottom area of ​​the gas-liquid separation mechanism in the prior art, and to solve the problem of high cost, so as to provide a gas extraction pipeline system with heating.

[0004] This utility model provides a gas extraction pipeline system with heating, comprising:

[0005] The gas extraction tree is connected to a first gas transmission pipeline and a second gas transmission pipeline, respectively. The first gas transmission pipeline is equipped with a first valve, and the second gas transmission pipeline is equipped with a second valve.

[0006] A gas-liquid separation mechanism includes a tank body, the tank body having a first air inlet, a second air inlet, an exhaust outlet and a liquid outlet, the first air inlet being located at the top of the tank body, the second air inlet being located below the middle of the tank body, the exhaust outlet being located at the top of the tank body, and the liquid outlet being located at the bottom of the tank body, the first gas supply pipeline being connected to the first air inlet, and the second gas supply pipeline being connected to the second air inlet;

[0007] A transition pipeline, which connects the first gas transmission pipeline and the second gas transmission pipeline, is equipped with a third valve;

[0008] A heating mechanism is installed in the second gas supply pipeline. One end of the transition pipeline is connected between the gas extraction tree and the first valve, and the other end is connected between the heating mechanism and the second valve.

[0009] This utility model discloses a heated gas extraction pipeline system. By installing a heating mechanism on the gas transmission pipeline behind the gas extraction tree, the fluid in one of the transmission pipelines is heated to increase its temperature. The heated fluid is then introduced into the other transmission pipeline and fed into the gas-liquid separator from the top of the separator. This increases the overall temperature of the fluid entering the gas-liquid separator, reducing the probability of ice blockage within the separator, particularly preventing ice blockage in the top and upper areas. Furthermore, the flow direction of the fluid output from the gas extraction tree can be controlled by adjusting the opening and closing of the first and second valves, allowing the two transmission pipelines to operate independently or collaboratively, minimizing the risk of ice blockage within the gas-liquid separator. Additionally, installing the heating mechanism on the pipeline is more convenient than installing it on the gas-liquid separator itself, achieving better anti-ice blockage while reducing modification costs.

[0010] Preferably, the heating mechanism is disposed on the outer surface of the second gas supply pipeline.

[0011] Preferably, the heating mechanism is provided with a heating channel communicating with the second gas supply pipeline. This allows the fluid to flow through the heating channel and receive better heating, thereby increasing the fluid temperature.

[0012] Preferably, the heating mechanism has an inlet pipe and an outlet pipe, the heating channel is connected to the inlet pipe and the outlet pipe respectively, the inlet pipe and the outlet pipe are connected to the second gas supply pipeline respectively, and the inlet pipe and the outlet pipe are each equipped with a switching valve. The connection control between the heating mechanism and the second gas supply pipeline can be realized according to actual conditions. When the heating mechanism is not required to work, the fluid can be transported directly along the second gas supply pipeline without passing through the heating mechanism, which facilitates the maintenance of the heating mechanism and extends its service life.

[0013] Preferably, the second gas supply line is provided with a fourth valve, which is located between the inlet pipe and the outlet pipe. This further facilitates the switching of operations between the second gas supply line and the heating mechanism.

[0014] Preferably, the first gas delivery pipeline is positioned above the second gas delivery pipeline, and the transition pipeline is vertically positioned. This allows the fluid transported by the gas-producing tree along the first gas delivery pipeline to directly and smoothly enter the gas-liquid separation mechanism.

[0015] Preferably, a bracket is connected to the heating mechanism, and the bracket is detachably connected to the first gas supply line. This allows the heating mechanism to be stably positioned between the first and second gas supply lines.

[0016] Preferably, the tank body includes a cylindrical portion and a conical end portion, with the conical end portion located below the cylindrical portion. An exhaust port is located at the top of the cylindrical portion, and a drain port is located at the bottom of the conical end portion. The exhaust port is connected to an exhaust pipe equipped with an exhaust valve. The drain port is connected to a drain pipe equipped with a drain valve. A second gas supply pipe connects to the junction of the cylindrical portion and the conical end portion. This allows liquid within the gas-liquid separation mechanism to quickly accumulate and drain at the conical end portion, and prevents ice blockage in the lower region of the gas-liquid separation mechanism from occurring due to the heated fluid supplied through the second gas supply pipe.

[0017] Preferably, the transition pipeline is provided with an insulation layer to prevent heat loss and improve the anti-icing effect.

[0018] Preferably, the conical end is provided with an insulation layer to further prevent heat loss and improve the anti-icing effect.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model provides a gas extraction pipeline system with heating. By installing a heating mechanism on the gas transmission pipeline behind the gas extraction tree, the fluid in one of the gas transmission pipelines is heated, and then the heated fluid is introduced into another gas transmission pipeline and input together from the top of the tank of the gas-liquid separation mechanism. This can increase the overall temperature of the fluid entering the gas-liquid separation mechanism and reduce the probability of ice blockage in the gas-liquid separation mechanism. In particular, it can avoid ice blockage in the top and upper areas of the gas-liquid separation mechanism.

[0021] 2. This utility model provides a gas extraction pipeline system with heating. Through the first valve and the second valve respectively set in the two gas transmission pipelines, the flow direction of the fluid output from the gas extraction tree can be controlled, so that the two gas transmission pipelines can work independently or work together, and the ice blockage in the gas-liquid separation mechanism can be avoided to the greatest extent.

[0022] 3. This utility model provides a gas extraction pipeline system with heating. By adding a heating mechanism to the pipeline, it is more convenient than adding a heating mechanism to the gas-liquid separation mechanism, and can reduce the modification cost while achieving better anti-icing and blockage effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a heated gas extraction pipeline system according to Example 1. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of a heated gas extraction pipeline system according to Example 1. Figure 2 ;

[0025] Marked in the image:

[0026] 1-Gas source tree, 2-First gas transmission pipeline, 21-First valve, 3-Second gas transmission pipeline, 31-Second valve, 32-Fourth valve, 4-Tank body, 41-First air inlet, 42-Second air inlet, 43-Exhaust port, 44-Drain port, 45-Cylindrical section, 46-Conical end, 5-Transition pipeline, 51-Third valve, 6-Heating mechanism, 61-Inlet pipe, 62-Outlet pipe, 7-Switching valve, 8-Support, 9-Exhaust pipeline, 91-Exhaust valve, 10-Drain pipeline, 101-Drain valve. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0028] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0030] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0031] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0032] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0033] Example

[0034] like Figures 1-2As shown, a heated gas extraction pipeline system includes a gas extraction tree 1, a gas-liquid separation mechanism, and a heating mechanism 6. The gas extraction tree 1 is connected to a first gas transmission pipeline 2 and a second gas transmission pipeline 3. The first gas transmission pipeline 2 is equipped with a first valve 21, and the second gas transmission pipeline 3 is equipped with a second valve 31. The gas-liquid separation mechanism includes a tank 4, which is equipped with a first air inlet 41, a second air inlet 42, an exhaust port 43, and a liquid outlet 44. The first air inlet 41 is located at the top of the tank 4, and the second air inlet 42 is located at the top of the tank 4. Below the middle section, the exhaust port 43 is located at the top of the tank body 4, and the liquid outlet 44 is located at the bottom of the tank body 4. The first gas supply pipeline 2 is connected to the first gas inlet 41, and the second gas supply pipeline 3 is connected to the second gas inlet 42. The heating mechanism 6 is located in the second gas supply pipeline 3. One end of the transition pipeline 5 is connected between the gas collection tree 1 and the first valve 21, and the other end is connected between the heating mechanism 6 and the second valve 31. The first gas supply pipeline 2 and the second gas supply pipeline 3 are connected through a filter pipeline. The transition pipeline 5 is equipped with a third valve 51.

[0035] This embodiment describes a heated gas extraction pipeline system. The gas extraction tree 1 has at least two production ports. A first gas delivery pipeline 2 and a second gas delivery pipeline 3 are each connected to one production port. The tank 4 of the gas-liquid separation mechanism is located at a nearby gas extraction and transportation station and is connected to the gas extraction tree 1 via a pipeline, forming the gas extraction pipeline system. A transition pipeline 5 connects the first gas delivery pipeline 2 and the second gas delivery pipeline 3. A heating mechanism 6 is located on the second gas delivery pipeline 3, which connects to a lower part of the side wall of the tank 4. During actual production, the second valve 31 is closed, and the first valve 21 and the third valve 51 are opened. The fluid produced from the gas extraction tree 1 via the second gas delivery pipeline 3 is heated and then enters the first gas delivery pipeline 2 via the transition pipeline 5. After merging with the fluid in the first gas delivery pipeline 2, the fluid flows out from the tank of the gas-liquid separation mechanism. The fluid enters through the first air inlet 41 at the top of the tank 4 and undergoes gas-liquid separation inside the tank 4. Because the fluid has been heated by the heating mechanism 6, its temperature is increased, making it less prone to ice blockage in the upper or top area of ​​the tank 4. At the same time, due to the increased temperature, the gas and liquid in the fluid can be separated better, resulting in better gas-liquid separation. When the external ambient temperature is low and liquid icing is likely to occur at the bottom of the gas-liquid separation mechanism, the first valve 21 and the third valve 51 are closed, and the second valve 31 is opened. This allows all the fluid output from the gas collection tree 1 to be heated through the second gas pipeline 3 and then enter the tank 4 from a position slightly below the side wall of the tank 4 in the gas-liquid separation mechanism. This achieves rapid unblocking of the ice blockage at the bottom of the tank 4 and reduces the probability of liquid icing by increasing the temperature.

[0036] In one or more embodiments, the heating mechanism 6 may be a structure such as a heating tape, which may be installed on the outer surface of the second gas pipeline 3. The external heating mechanism 6 exchanges heat with the fluid in the pipeline to achieve the heating effect.

[0037] In one or more embodiments, the heating mechanism 6 may be a heating mechanism 6 with a heating water tank and an internal coil, and is provided with a heating channel connected to the second gas supply line 3, so that the fluid flows through the heating channel and is heated better. Compared with electric heat tracing heating, it can achieve the purpose of faster and higher fluid temperature rise under safer and more energy-efficient conditions.

[0038] In an optional embodiment, the heating mechanism 6 can be a heating water tank equipped with an internal coil. The water in the heating water tank can come from other heating mechanisms 6 such as boilers and water jackets that are already installed in the existing mining and transportation station, so as to achieve a better heating effect with less modification cost.

[0039] In an optional embodiment, the heating mechanism 6 may be provided with an inlet pipe 61 and an outlet pipe 62, with the heating channel communicating with both the inlet pipe 61 and the outlet pipe 62. The inlet pipe 61 and the outlet pipe 62 are respectively connected to the second gas supply pipeline 3, and each of the inlet pipe 61 and the outlet pipe 62 is equipped with a switching valve 7. The connection control between the heating mechanism 6 and the second gas supply pipeline 3 can be realized according to actual conditions. When the heating mechanism 6 is not required to operate, the fluid can be directly transported along the second gas supply pipeline 3 without passing through the heating mechanism 6, facilitating the maintenance of the heating mechanism 6 and extending its service life.

[0040] In an optional embodiment, the second gas supply line 3 is provided with a fourth valve 32, which is located between the inlet pipe 61 and the outlet pipe 62. This further facilitates the switching of operations between the second gas supply line 3 and the heating mechanism 6.

[0041] In an optional embodiment, the first gas transmission pipeline 2 can be located above the second gas transmission pipeline 3, and the transition pipeline 5 is vertically arranged. This allows the fluid transported by the gas extraction tree 1 along the first gas transmission pipeline 2 to directly and smoothly enter the top of the gas-liquid separation mechanism at a higher position. This enables the gas extraction pipeline system to operate normally without turning on the heating mechanism 6 most of the time, meeting the low-cost modification and use requirements of most existing gas extraction and transportation stations in mountainous areas of Southwest China where the anti-freezing period is short but heating is required in extreme weather.

[0042] In one or more embodiments, a bracket 8 is connected to the heating mechanism 6, and the bracket 8 is detachably connected to the first gas supply line 2. This allows the heating mechanism 6 to be stably positioned between the first gas supply line 2 and the second gas supply line 3.

[0043] In an optional embodiment, the support 8 may be a steel rod welded to the heating mechanism 6, with a pipe clamp at one end. The heating mechanism 6 is connected to the first gas pipeline through the support 8 to maintain the stable setting of the heating mechanism 6.

[0044] In one or more embodiments, the tank body 4 includes a cylindrical portion 45 and a conical end portion 46. The conical end portion 46 is located below the cylindrical portion 45. An exhaust port 43 is located at the top of the cylindrical portion 45, and a drain port 44 is located at the bottom of the conical end portion 46. The exhaust port 43 is connected to an exhaust pipe 9, which is equipped with an exhaust valve 91. The drain port 44 is connected to a drain pipe 10, which is equipped with a drain valve 101. A second gas supply pipe 3 connects to the junction of the cylindrical portion 45 and the conical end portion 46. This allows the liquid in the gas-liquid separation mechanism to accumulate and be discharged quickly at the conical end portion 46, and prevents ice blockage in the lower region of the gas-liquid separation mechanism from occurring due to the heated fluid supplied through the second gas supply pipe 3.

[0045] In one or more embodiments, the transition pipe 5 is provided with an insulation layer to prevent heat loss and improve the anti-icing effect.

[0046] In one or more embodiments, the cone tip 46 is provided with an insulation layer to further prevent heat loss and improve the anti-icing effect.

[0047] In an optional embodiment, the insulation layer may be insulation cotton that is wound around the insulation layer and bound by external wrapping tape or the like.

[0048] This embodiment of a heated gas extraction pipeline system heats the fluid in one of the gas extraction pipelines by installing a heating mechanism 6 on the gas transmission pipeline behind the gas extraction tree 1. The heated fluid is then introduced into the other gas transmission pipeline and fed into the gas-liquid separator from the top of the tank 4. This increases the overall temperature of the fluid entering the gas-liquid separator, reducing the probability of ice blockage within the separator, particularly preventing ice blockage in the top and upper areas. Furthermore, the two gas transmission pipelines can be adjusted by opening and closing the first valve 21 and the second valve 31. The section enables flow direction control of the output fluid from the gas production tree 1, allowing the two gas pipelines to operate independently or in tandem, minimizing the risk of ice blockage within the gas-liquid separation mechanism. In particular, when the second gas pipeline 3 is used to separately input the heated fluid from the lower part of the tank wall 4, it prevents liquid icing in the lower area of ​​the gas-liquid separation mechanism and allows for rapid unblocking if icing occurs. Furthermore, installing the heating mechanism 6 on the pipeline is more convenient than installing it on the gas-liquid separation mechanism, which helps to achieve better anti-icing effects while reducing modification costs.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heated gas gathering flowline system, characterized by, The utility model provides a kind of gas production tree (1), first gas pipeline (2) and second gas pipeline (3) are connected respectively, the first gas pipeline (2) is equipped with first valve (21), and the second gas pipeline (3) is equipped with second valve (31);Gas-liquid separation mechanism includes tank body (4), the tank body (4) is equipped with first air inlet (41), second air inlet (42), exhaust port (43) and liquid outlet (44), the first air inlet (41) is arranged in the tank body (4) top, the second air inlet (42) is arranged in the tank body (4) middle below, the exhaust port (43) is arranged in the tank body (4) top, the liquid outlet (44) is arranged in the tank body (4) bottom, the first gas pipeline (2) is communicated with the first air inlet (41), and the second gas pipeline (3) is communicated with the second air inlet (42);Transition pipeline (5), the transition pipeline (5) connects the first gas pipeline (2) and the second gas pipeline (3), and the transition pipeline (5) is equipped with third valve (51);Heating mechanism (6) is arranged in the second gas pipeline (3), and the transition pipeline (5) one end is connected between the gas production tree (1) and the first valve (21), and the other end is connected between the heating mechanism (6) and the second valve (31). The heating mechanism (6) is arranged on the outer surface of the second gas pipeline (3). The heating mechanism (6) is provided with a heating channel communicated with the second gas pipeline (3). The heating mechanism (6) is provided with an inlet pipe (61) and an outlet pipe (62), and the heating channel is communicated with the inlet pipe (61) and the outlet pipe (62) respectively. The second gas pipeline (3) is provided with a fourth valve (32) located between the inlet pipe (61) and the outlet pipe (62).

2. A heated gas recovery flow line system according to claim 1, wherein, The first gas pipeline (2) is arranged above the second gas pipeline (3), and the transition pipeline (5) is vertically arranged.

3. A heated gas flow process line system according to claim 1, wherein, The heating mechanism (6) is connected with a bracket (8), and the bracket (8) is detachably connected with the first gas pipeline (2).

4. A heated gas flow process line system according to claim 3, wherein, The tank body (4) includes a cylindrical portion (45) and a tapered end portion (46), the tapered end portion (46) is located below the cylindrical portion (45), the exhaust port (43) is arranged at the top of the cylindrical portion (45), the liquid outlet (44) is arranged at the bottom of the tapered end portion (46), the exhaust port (43) is connected with an exhaust pipeline (9), the exhaust pipeline (9) is provided with an exhaust valve (91), the liquid outlet (44) is connected with a liquid discharge pipeline (10), the liquid discharge pipeline (10) is provided with a liquid discharge valve (101), and the second gas pipeline (3) communicates with the intersection of the cylindrical portion (45) and the tapered end portion (46).

5. A heated gas flow process line system according to claim 4, wherein, The transition pipeline (5) is provided with a heat preservation layer.

6. A heated gas recovery flow line system according to any one of claims 1 to 5, wherein, ​ 7. A heated gas recovery flow line system according to claim 6 wherein, ​ 8. A heated gas recovery flow line system according to claim 6 wherein, ​ 9. A heated gas recovery flow line system according to claim 6 wherein, ​ 10. A heated gas recovery flow line system according to claim 8, wherein, The tapered end (46) is provided with a heat-insulating layer.

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