Heating, throttling and metering integrated system for conventional gas well station

Abstract

The utility model relates to the technical field of gas well exploitation, in particular to a heating, throttling and metering integrated system for a conventional gas well station, which comprises a medicament filling module, a well mouth module and a metering module, the wellhead module is used for performing throttling control treatment on raw material gas; the heating throttling module is used for heating the raw material gas and conveying the raw material gas to the two-phase flowmeter module; the two-phase flow metering module is used for metering a gas-phase substance and a liquid-phase substance in the gas from the heating throttling module; the in-station and out-station module is used for carrying out adjustment treatment on the metered substances before the metered substances go out of the station; and the emptying module is used for treating the emptying air. According to the utility model, the structure of the system is improved, so that the composition of the system is simplified, the number of structural parts of the system is reduced, the treatment process of feed gas can be greatly simplified, and the treatment efficiency and convenience are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas well exploitation, and particularly relates to an integrated system for heating, throttling and metering of a conventional gas well station. Background Art

[0002] With the in-depth exploration and development of conventional gas in oil and gas fields, the standardized, modular and integrated design of surface engineering has been further improved. Facing greater construction cost pressure and higher production management requirements, the current processes adopted for conventional gas can no longer fully meet the current construction needs and have room for continuous optimization and improvement, which is mainly reflected in the following aspects.

[0003] 1) Diversified requirements for wellhead throttling. The wellhead pressure of conventional gas ranges from 30 to 110 MPa, and the throttling stages and the selection schemes of throttle valves are very different. It is necessary to improve the pressure control ability of the wellhead device to prevent the formation of hydrates and meet the actual requirements of pressure control production.

[0004] 2) Defects exist in the heating process. The commonly used heating equipment in conventional gas well stations is a gas-fired water jacket heating furnace, which requires regular water replenishment. The boiler shell is prone to scale formation and oxygen corrosion, and the heat transfer coefficient of the water bath is relatively low. It is necessary to optimize the heating furnace scheme to prevent the formation of hydrates in the station.

[0005] 3) The metering process is complex. The commonly used metering process in conventional gas well stations is the gas-liquid separation metering process, which separates the produced gas into gas and liquid and then meters it. The process is cumbersome and complex, and the equipment used is more and more complex, which also leads to an increase in cost.

[0006] 4) The cost is relatively high. In the traditional conventional gas exploitation process, the involved processes are complex, the number of equipment is large and the price is high, resulting in a relatively high cost of conventional gas exploitation. With the need for efficient development of conventional gas fields, the exploitation of conventional gas needs to reduce costs, meet the high-quality construction of gas fields and achieve the purpose of reducing investment and increasing benefits at the same time. The current conventional gas exploitation process cannot achieve this effect.

[0007] It can be seen that the current conventional gas exploitation process still has room for urgent improvement, and should be optimized and improved to simplify the exploitation process, improve the exploitation efficiency and reduce the overall exploitation cost. Therefore, a more reasonable technical solution needs to be proposed to solve the technical problems existing in the prior art. Content of the Utility Model

[0008] To at least overcome one of the above-mentioned defects, the utility model proposes an integrated system for heating, throttling and metering of a conventional gas well station. By optimizing and adjusting the exploitation system, the process of conventional gas exploitation can be simplified, the number of equipment in the system can be reduced, and the overall exploitation cost can be reduced.

[0009] To achieve the above purpose, the integrated system disclosed by the utility model can adopt the following technical solutions:

[0010] A conventional integrated system for heating, throttling and metering in a gas well station, comprising:

[0011] A chemical injection module, including an injection storage tank. The feed end of the injection storage tank is connected and cooperated with a chemical source. The discharge end of the injection storage tank is connected to an injection pipeline. An injection pump is arranged on the injection pipeline and used to transport the chemical to the wellhead module. A filter is arranged on the injection pipeline upstream of the injection pump, and an accumulator is arranged on the injection pipeline downstream of the injection pump;

[0012] A wellhead module, used to perform throttling control processing on raw gas and transport the throttled raw gas to the heating and throttling module;

[0013] A heating and throttling module, used to heat the raw gas and transport it to the two-phase flowmeter module, and at the same time connect to receive fuel gas for use as heating fuel;

[0014] A two-phase flow metering module, used to meter the gaseous substances and liquid substances in the gas coming from the heating and throttling module. The metered gaseous substances and liquid substances are sent to the inlet and outlet station module;

[0015] An inlet and outlet station module, used to perform pre-outlet adjustment processing on the metered substances and perform external transportation after the processing;

[0016] A venting module, including a venting and liquid separation tank module, used to process the liquid substances in the vent gases of the wellhead module, the two-phase flow metering module and the inlet and outlet station module; It also includes a venting flare module, used to process the gaseous substances in the vent gases of the venting and liquid separation tank module, as well as the vent gases in the fuel gas.

[0017] The above-mentioned disclosed integrated system, through the adjustment and improvement of each module, reduces the number of device structures in the exploitation system, simplifies the system composition, thereby can simplify the exploitation process, can reduce the overall exploitation cost, and improve the efficiency and convenience of conventional gas exploitation and processing.

[0018] Furthermore, the structure of the injection storage tank can adopt multiple schemes to receive raw gas, store it and transport it backward. Its structure is not uniquely limited. Here, an optimization is carried out and a feasible option is proposed: The injection storage tank includes several injection chambers. Each injection chamber is connected to the chemical source and connected to the injection pipeline through a separate discharge pipeline. A liquid level monitor is correspondingly arranged for each injection chamber, and a discharge control valve group and a sewage valve group are arranged on each discharge pipeline; The liquid level monitor communicates with the controller and transmits the monitored liquid level data to the controller. The controller is used to control the start and stop of the injection pump. When adopting the above scheme, the injection storage tank includes at least one injection chamber. In the case of setting multiple injection chambers, multiple injection storage and coordinated backward transportation schemes can be adopted. In addition, multiple injection storage tanks with single injection chambers can also be set, and multiple injection storage and coordinated backward transportation schemes can also be realized.

[0019] Furthermore, during the dosing process, when the conveying pressure is inconsistent with the set pressure, pressure adjustment is required, or when the subsequent pipeline needs appropriate energy storage, the dosing pipeline needs to be appropriately throttled. Therefore, optimization can be carried out, and this purpose can be achieved through various solutions. Its structure is not uniquely defined. Here, optimization is carried out and one feasible option is proposed: A reflux pressure regulating pipeline is arranged in parallel on the dosing pipeline. The reflux pressure regulating pipeline is used to return the agent sent out by the dosing pump to the upstream of the filter. When the above solution is adopted, several reflux pressure regulating pipelines can be arranged, all in parallel. The set pressure regulating values of each reflux pressure regulating pipeline are different and are controlled by corresponding throttle valves.

[0020] Furthermore, the wellhead module is used to export raw gas. After obtaining the raw gas, it cooperates with the agent dosing module to achieve the dosing of the agent into the raw gas. The wellhead module can be constructed in various forms, and its structure is not uniquely defined. Here, optimization is carried out and one feasible option is proposed: The wellhead module includes a raw gas conveying pipeline. Several stages of throttle valve groups are arranged on the raw gas conveying pipeline and are used to throttle and limit the pressure of the raw gas to the set pressure; the dosing pipeline is connected to the raw gas conveying pipeline and doses the agent into the raw gas conveying pipeline. A wellhead vent pipeline connected to the vent module is arranged on the raw gas conveying pipeline. When the above solution is adopted, the raw gas conveying pipeline can adopt a one-stage throttling scheme to directly throttle to the set post-transport pressure, or a two-stage throttling scheme to throttle to the set post-transport pressure, or a three-stage throttling scheme to throttle to the set post-transport pressure.

[0021] Furthermore, the heating and throttling module heats the raw gas. After being heated to the set temperature, it is transported backward to facilitate the subsequent treatment of the raw gas. Its structure is not uniquely defined. Here, optimization is carried out and one feasible option is proposed: The heating and throttling module includes a heating furnace for heating the raw gas. A throttling pipeline for transporting the raw gas is arranged downstream of the heating furnace. The throttling pipeline is used to throttle the raw gas to the transport pressure and then transport it to the two-phase flow metering module or the inlet / outlet station module. When the above solution is adopted, heating coils are arranged in the heating furnace to heat the raw gas; the heating furnace uses fuel gas entering the burner to generate heat, which is used as the heat source for heating the raw gas. The fuel gas can come from the fuel gas source configured upstream or the fuel gas source configured downstream.

[0022] Further, the two-phase flowmeter module is used to measure the gaseous and liquid substances in the raw gas, and its structure is not uniquely defined. Here, an optimization is carried out and one feasible option is proposed: The two-phase flowmeter module includes a metering pipeline and a two-phase flowmeter. The metering pipeline is connected to the heating and throttling module and is used to receive the raw gas from the heating and throttling module. The two-phase flowmeter is used to measure the flow rates of the gaseous and liquid phases in the raw gas. A metering vent pipeline connected to the venting module is also provided on the metering pipeline, and the metering pipeline extends and is connected to the inlet / outlet module.

[0023] Further, the inlet / outlet module is used to convey the processed raw gas backward and transport it to the corresponding modules and equipment downstream. Its structure is not uniquely defined. Here, an optimization is carried out and one feasible option is proposed: The inlet / outlet module includes an outlet valve group module or a pig launcher module. When the above scheme is adopted, the backward conveying pressure of the raw gas can be controlled through the outlet valve group module. When the pig launcher module is adopted, pigging treatment can also be carried out.

[0024] Still further, the outlet valve group module can adopt various composition schemes, and its structure is not uniquely defined. Here, an optimization is carried out and one feasible option is proposed: The outlet valve group module includes an outlet pipeline. An outlet control valve group is provided on the outlet pipeline. An outlet vent pipeline connected to the venting module is also provided on the outlet pipeline. The rear end of the outlet pipeline is connected to the downstream equipment. When the above scheme is adopted, the outlet control valve group includes a pigging valve, an outlet emergency cut-off valve, etc.

[0025] Still further, the pig launcher module can adopt various composition schemes, and its structure is not uniquely defined. Here, an optimization is carried out and one feasible option is proposed: The pig launcher module includes a pig launching pipeline. A pig launcher is provided on the pig launching pipeline. The pig launcher is connected to the downstream equipment through the subsequent pipeline. A number of pigging control valve groups are provided downstream of the pig launcher. When the above scheme is adopted, the pigging control valve group includes a production bypass valve, an outlet emergency cut-off valve, etc.

[0026] Further, the inlet / outlet module also regulates the incoming gas, mainly controls the incoming fuel gas. Its structure is not uniquely defined. Here, an optimization is carried out and one feasible option is proposed: The inlet / outlet module also includes a fuel gas pressure regulating and metering module connected to the heating and throttling module. The fuel gas pressure regulating and metering module includes a pressure regulating pipeline. A pressure regulating valve group is provided on the pressure regulating pipeline. A fuel gas pressure regulating vent pipeline connected to the venting module is also provided. When the above scheme is adopted, the pressure regulating valve group includes a self-operated pressure regulating valve, a pneumatic cut-off valve, etc.

[0027] Compared with the prior art, some beneficial effects of the disclosed technical solution of the present utility model include:

[0028] Through the improvement of the system structure, the present utility model simplifies the system composition, reduces the number of system structural components, and can greatly simplify the processing technology of the raw gas, improving the processing efficiency and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 is the process principle block diagram of the integrated system (using the outbound valve group module).

[0031] Figure 2 is the process principle block diagram of the integrated system (using the pigging launch module).

[0032] Figure 3 is the schematic diagram of the composition of the chemical injection module.

[0033] Figure 4 is the schematic diagram of the composition of the wellhead module (using primary throttling).

[0034] Figure 5 is the schematic diagram of the composition of the wellhead module (using secondary throttling).

[0035] Figure 6 is the schematic diagram of the composition of the wellhead module (using tertiary throttling).

[0036] Figure 7 is the schematic diagram of the composition of the heating throttling module.

[0037] Figure 8 is the schematic diagram of the composition of the two-phase flowmeter module.

[0038] Figure 9 is the schematic diagram of the composition of the pigging launch module.

[0039] Figure 10 is a schematic diagram of one composition of the outbound valve group module.

[0040] Figure 11 is another schematic diagram of the composition of the outbound valve group module.

[0041] Figure 12 is the schematic diagram of the composition of the fuel gas pressure regulating and metering module.

[0042] Figure 13 is the schematic diagram of the composition of the blowdown and separation tank module.

[0043] Figure 14 It is a schematic diagram of the composition of the venting flare module.

[0044] In the above-mentioned drawings, the meanings of the respective markings are as follows:

[0045] 1. Chemical injection storage tank; 101. Chemical injection chamber; 2. Chemical injection pipeline; 3. Chemical injection pump; 4. Filter; 5. Accumulator; 6. Return pressure regulating pipeline; 7. Raw gas transmission pipeline; 8. Throttle valve group; 9. Wellhead venting pipeline; 10. Heating furnace; 11. Throttle pipeline; 12. Metering pipeline; 13. Metering venting pipeline; 14. Pig launching pipeline; 15. Pig launcher; 16. Outbound pipeline; 17. Outbound venting pipeline; 18. Pressure regulating pipeline; 19. Fuel gas pressure regulating and venting pipeline. Specific implementation manners

[0046] The following further explains this embodiment in conjunction with the drawings and specific embodiments.

[0047] In view of the situation that the existing conventional gas production system has a redundant system and a large number of components, resulting in a cumbersome production process, low efficiency, and high system construction and maintenance costs, the following embodiments are optimized to overcome the defects existing in the prior art.

[0048] Embodiment

[0049] As Figure 1 , Figure 2 shown, this embodiment provides an integrated system for heating, throttling, and metering in a conventional gas well station, which simplifies and optimizes the system, reduces the redundant components of the system, simplifies the production process of raw gas, and reduces the production cost of raw gas.

[0050] As an integrated system provided in this embodiment, one of its structures includes:

[0051] The chemical injection module, as Figure 3 shown, includes a chemical injection storage tank 1. The feed end of the chemical injection storage tank 1 is connected and cooperates with a chemical source. The discharge end of the chemical injection storage tank 1 is connected to a chemical injection pipeline 2. A chemical injection pump 3 is arranged on the chemical injection pipeline 2 and is used to transport the chemical to the wellhead module. A filter 4 is arranged on the chemical injection pipeline 2 upstream of the chemical injection pump 3, and an accumulator 5 is arranged on the chemical injection pipeline 2 downstream of the chemical injection pump 3.

[0052] The structure of the filling storage tank 1 can adopt various schemes to receive the raw material gas, store it and transport it backward. Its structure is not uniquely defined. In this embodiment, it is optimized and one of the feasible options is adopted: the filling storage tank 1 includes several filling chambers 101. Each filling chamber 101 is connected to the reagent source and connected to the filling pipeline 2 through a separate discharge pipeline. A liquid level monitor is correspondingly arranged for each filling chamber 101, and a discharge control valve group and a sewage discharge valve group are arranged on each discharge pipeline; the liquid level monitor communicates with the controller and transmits the monitored liquid level data to the controller, and the controller is used to control the start and stop of the filling pump 3. When adopting the above scheme, the filling storage tank 1 includes at least one filling chamber 101. In the case of setting multiple filling chambers 101, various filling storage and coordinated post-transport schemes can be adopted. In addition, multiple filling storage tanks 1 with single filling chambers 101 can also be set, and various filling storage and coordinated post-transport schemes can also be realized.

[0053] During the filling process, when the conveying pressure is inconsistent with the set pressure, the pressure needs to be adjusted, or when the subsequent pipeline needs appropriate energy storage, the filling pipeline 2 needs to be appropriately throttled. Therefore, it can be optimized and this purpose can be achieved through various schemes. Its structure is not uniquely defined. In this embodiment, it is optimized and one of the feasible options is adopted: a reflux pressure regulating pipeline 6 is arranged in parallel on the filling pipeline 2, and the reflux pressure regulating pipeline 6 is used to return the reagent sent out by the filling pump 3 to the upstream of the filter 4. When adopting the above scheme, several reflux pressure regulating pipelines 6 can be set, all arranged in parallel, and the set pressure regulating values of each reflux pressure regulating pipeline 6 are different and are controlled by the corresponding throttle valve.

[0054] As the integrated system provided in this embodiment, the second structure thereof includes:

[0055] Wellhead module, such as Figures 4 to 6 shown, used to perform throttling control processing on the raw material gas and transport the raw material gas after throttling control to the heating throttling module.

[0056] The wellhead module is used for exporting raw gas. After obtaining the raw gas, it cooperates with the chemical injection module to realize the injection of chemicals into the raw gas. The wellhead module can be constructed in various forms, and its structure is not uniquely limited. In this embodiment, it is optimized and one of the feasible options is adopted: the wellhead module includes a raw gas transmission pipeline 7, and several stages of throttle valve groups 8 are arranged on the raw gas transmission pipeline 7 to throttle and limit the pressure of the raw gas to a set pressure; the injection pipeline 2 is connected to the raw gas transmission pipeline 7 and injects chemicals into the raw gas transmission pipeline 7, and a wellhead vent pipeline 9 connected to the vent module is arranged on the raw gas transmission pipeline 7. When the above scheme is adopted, the raw gas transmission pipeline 7 can adopt a one-stage throttling scheme to directly throttle to the set post-transmission pressure, or a two-stage throttling scheme to throttle to the set post-transmission pressure, or a three-stage throttling scheme to throttle to the set post-transmission pressure.

[0057] As the integrated system provided in this embodiment, the third structure thereof includes:

[0058] A heating and throttling module, as Figure 7 shown, is used to heat-treat the raw gas and transport it to the two-phase flowmeter module, and at the same time is connected to receive fuel gas as heating fuel.

[0059] The heating and throttling module heat-treats the raw gas. After being heated to the set temperature, it is transported backward to facilitate the subsequent treatment of the raw gas. Its structure is not uniquely limited. In this embodiment, it is optimized and one of the feasible options is adopted: the heating and throttling module includes a heating furnace 10 for heating the raw gas, and a throttle pipeline 11 for transporting the raw gas is arranged downstream of the heating furnace 10. The throttle pipeline 11 throttles the raw gas to the transport pressure and then transports it to the two-phase flow measurement module or the inlet / outlet station module. When the above scheme is adopted, heating coils are arranged in the heating furnace 10 to heat the raw gas; the heating furnace 10 uses fuel gas to enter the burner to generate heat, which is used as the heat source for heating the raw gas. The fuel gas can come from the fuel gas source configured upstream or the fuel gas source configured downstream.

[0060] As the integrated system provided in this embodiment, the fourth structure thereof includes:

[0061] A two-phase flowmeter module, as Figure 8 shown, is used to measure the gaseous and liquid substances in the gas coming from the heating and throttling module, and the measured gaseous and liquid substances are sent to the inlet / outlet station module.

[0062] The two-phase flowmeter module is used to measure the gaseous and liquid substances in the raw material gas, and its structure is not uniquely defined. In this embodiment, it is optimized and one of the feasible options is adopted: the two-phase flowmeter module includes a metering pipeline 12 and a two-phase flowmeter. The metering pipeline 12 is connected to the heating throttling module and is used to receive the raw material gas from the heating throttling module. The two-phase flowmeter is used to measure the flow rates of the gaseous and liquid phases in the raw material gas. A metering vent pipeline 13 connected to the venting module is also provided on the metering pipeline 12, and the metering pipeline 12 extends and is connected to the inlet / outlet station module.

[0063] As the integrated system provided in this embodiment, the fifth of its structures includes:

[0064] The inlet / outlet station module, such as Figures 9 to 12 shown, is used to perform pre-outlet adjustment processing on the metered substances, and after the processing is completed, it is externally transported.

[0065] The inlet / outlet station module includes means for backwardly transporting the processed raw material gas and transporting it to the corresponding modules and equipment downstream. Its structure is not uniquely defined. In this embodiment, it is optimized and one of the feasible options is adopted: the inlet / outlet station module includes an outlet valve group module or a pig launcher module. When the above scheme is adopted, the backward transport pressure of the raw material gas can be controlled through the outlet valve group module. When the pig launcher module is adopted, pigging treatment can also be carried out.

[0066] The outlet valve group module can adopt various composition schemes, and its structure is not uniquely defined. In this embodiment, it is optimized and one of the feasible options is adopted: the outlet valve group module includes an outlet pipeline 16. An outlet control valve group is provided on the outlet pipeline 16, and an outlet vent pipeline 17 connected to the venting module is also provided on the outlet pipeline 16. The rear end of the outlet pipeline 16 is connected to the downstream equipment. When the above scheme is adopted, the outlet control valve group includes a pigging valve, an outlet emergency cut-off valve, etc.

[0067] In some other embodiments, an outlet bypass can also be provided on the outlet pipeline 16. The outlet bypass is arranged in parallel at the outlet control valve group, and a bypass valve is provided on the outlet bypass for controlling the on / off and throttling of the outlet bypass.

[0068] The pig launcher module can adopt various composition schemes, and its structure is not uniquely defined. In this embodiment, it is optimized and one of the feasible options is adopted: the pig launcher module includes a pig launching pipeline 14. A pig launcher 15 is provided on the pig launching pipeline 14. The pig launcher 15 is connected to the downstream equipment through a subsequent pipeline, and several pigging control valve groups are provided downstream of the pig launcher 15. When the above scheme is adopted, the pigging control valve group includes a production bypass valve, an outlet emergency cut-off valve, etc.

[0069] The in-out station module also regulates the incoming gas, mainly controlling the incoming fuel gas. Its structure is not uniquely defined. In this embodiment, it is optimized and one feasible option is adopted: as Figure 12 shown, the in-out station module further includes a fuel gas pressure regulating and metering module connected to the heating throttle module. The fuel gas pressure regulating and metering module includes a pressure regulating pipeline 18, on which a pressure regulating valve group is provided, and a fuel gas pressure regulating and venting pipeline 19 connected to the venting module is also provided. When adopting the above solution, the pressure regulating valve group includes a self-operated pressure regulating valve, a pneumatic cut-off valve, etc.

[0070] Preferably, in this embodiment, a pressure regulating branch is formed on the pressure regulating pipeline 18. The pressure regulating branch is arranged in parallel at the pressure regulating valve group. Both the upstream and downstream of the pressure regulating valve group are connected to the venting module through the fuel gas pressure regulating and venting pipeline 19 to discharge part of the vented gas. The upstream of the pressure regulating pipeline 18 is connected to the station to obtain fuel gas from the station.

[0071] As the integrated system provided in this embodiment, the sixth structure thereof includes:

[0072] A venting module, as Figure 13 , Figure 14 shown, includes a venting and liquid separation tank module for treating the liquid substances in the vented gas of the wellhead module, the two-phase flow metering module and the in-out station module; and further includes a venting flare module for treating the gas-phase substances in the vented gas of the venting and liquid separation tank module, as well as the vented gas in the fuel gas.

[0073] The above-disclosed integrated system, through the adjustment and improvement of each module, reduces the number of device structures in the exploitation system, simplifies the system composition, thereby can simplify the exploitation process, can reduce the overall exploitation cost, and improve the efficiency and convenience of conventional gas exploitation and treatment.

[0074] The above are the implementation manners listed in this embodiment, but this embodiment is not limited to the above optional implementation manners. Those skilled in the art can obtain many other implementation manners by arbitrarily combining the above manners. Anyone can obtain other various forms of implementation manners under the inspiration of this embodiment. The above specific implementation manners should not be understood as limiting the protection scope of this embodiment. The protection scope of this embodiment should be defined by the claims.

Claims

1. A conventional gas well station heating throttling metering integrated system, characterized in that: include: The medicine filling module comprises a filling tank (1), wherein the feeding end of the filling tank (1) is connected to a matching medicine source, the discharging end of the filling tank (1) is connected to a filling pipeline (2), a filling pump (3) is provided on the filling pipeline (2) and is used to transport the medicine to the wellhead module, a filter (4) is provided on the filling pipeline (2) upstream of the filling pump (3), and an accumulator (5) is provided on the filling pipeline (2) downstream of the filling pump (3); The wellhead module is used to perform throttling control on the raw gas and transport the throttling-controlled raw gas to the heating throttling module; The heating and throttling module is used to heat the raw gas and transport it to the two-phase flow meter module, and is also connected to receive the fuel gas for heating fuel; The two-phase flow metering module is used to meter the gas phase and liquid phase in the gas from the heating and throttling module, and the metered gas phase and liquid phase are sent to the inlet and outlet modules; The inlet and outlet modules are used to adjust the measured materials before leaving the station and transport them out after processing; The venting module includes a venting separator tank module for processing liquid phase substances in the venting air of the wellhead module, the two-phase flow metering module and the inlet and outlet module; and also includes a venting flare module for processing gas phase substances in the venting air of the venting separator tank module and the venting air in the fuel gas.

2. The conventional gas well station heating throttling metering integrated system according to claim 1 is characterized in that: The filling storage tank (1) comprises a plurality of filling chambers (101), each of which is connected to a medicine source and is connected to a filling pipeline (2) via a separate discharge pipeline. Each of the filling chambers (101) is provided with a corresponding liquid level monitor, and each discharge pipeline is provided with a discharge control valve group and a sewage discharge valve group. The liquid level monitor communicates with a controller and transmits the monitored liquid level data to the controller, and the controller is used to control the start and stop of the filling pump (3).

3. The conventional gas well station heating throttling metering integrated system according to claim 1 is characterized in that: A reflux pressure regulating pipeline (6) is arranged in parallel with the filling pipeline (2), and the reflux pressure regulating pipeline (6) is used to return the medicine delivered by the filling pump (3) to the upstream of the filter (4).

4. The conventional gas well station heating throttling metering integrated system according to claim 1 is characterized in that: The wellhead module comprises a raw gas delivery pipeline (7), on which a plurality of throttling valve groups (8) are arranged for throttling the raw gas to a set pressure; the filling pipeline (2) is connected to the raw gas delivery pipeline (7) and fills the raw gas delivery pipeline (7) with reagents, and the raw gas delivery pipeline (7) is provided with a wellhead venting pipeline (9) connected to the venting module.

5. The conventional gas well station heating throttling metering integrated system according to claim 1 is characterized in that: The heating throttling module comprises a heating furnace (10) for heating raw gas, and a throttling pipeline (11) for conveying raw gas is arranged downstream of the heating furnace (10). The throttling pipeline (11) is used to throttle the raw gas to a conveying pressure and then convey it to a two-phase flow metering module or an inlet and outlet module.

6. The conventional gas well station heating throttling metering integrated system according to claim 1 or 5, characterized in that: The two-phase flow meter module comprises a metering pipeline (12) and a two-phase flow meter. The metering pipeline (12) is connected to the heating and throttling module and is used to receive the raw gas from the heating and throttling module. The two-phase flow meter is used to measure the flow of the gas phase and the liquid phase in the raw gas. The metering pipeline (12) is also provided with a metering and venting pipeline (13) connected to the venting module. The metering pipeline (12) extends to be connected to the inlet and outlet modules.

7. The conventional gas well station heating throttling metering integrated system according to claim 1 is characterized in that: The inlet and outlet modules include an outlet valve group module or a pigging sending module.

8. The conventional gas well station heating throttling metering integrated system according to claim 7 is characterized in that: The outlet valve group module comprises an outlet pipeline (16), on which an outlet control valve group is arranged, and on which an outlet vent pipeline (17) connected to the vent module is also arranged, and the rear end of the outlet pipeline (16) is connected to downstream equipment.

9. The conventional gas well station heating throttling metering integrated system according to claim 7 is characterized in that: The cleaning sending module comprises a cleaning sending pipeline (14), on which a ball launching barrel (15) is arranged. The ball launching barrel (15) is connected to downstream equipment through a subsequent pipeline, and a plurality of cleaning control valve groups are arranged downstream of the ball launching barrel (15).

10. The conventional gas well station heating throttling metering integrated system according to claim 7 is characterized in that: The inlet and outlet module also includes a fuel gas pressure regulating and metering module connected to the heating and throttling module. The fuel gas pressure regulating and metering module includes a pressure regulating pipeline (18), on which a pressure regulating valve group is arranged, and a fuel gas pressure regulating and venting pipeline (19) connected to the venting module is also arranged.

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