An automatic separation and filtration device for oil well associated gas

Abstract

The utility model relates to the field of oil well associated gas processing, specifically relates to an oil well associated gas automatic separation filter device, it includes box, separator, liquid accumulator, stabilizer, double filter, automatic controller and pipeline, separator, liquid accumulator, stabilizer, double filter install in the inside of box, liquid accumulator communicates with stabilizer, automatic controller installs in the outside of box, pipeline includes first gas pipe, second gas pipe, third gas pipe, fourth gas pipe, bypass gas pipe, first liquid pipe, second liquid pipe, third liquid pipe and blowdown pipe. The utility model carries out a series of separation and filtration to associated gas, effectively removes the condensate water and light oil component among them, separation filtration effect is improved significantly, ensures that the associated gas after processing completely satisfies the standard requirement of heating furnace gas use, solves the problem that filter core replacement and equipment operation are difficult to take into account, achieves replacement filter core without stopping production, equipment maintenance and production efficiency two without missing.

Description

Technical Field

[0001] This utility model relates to the field of associated gas treatment in oil wells, specifically to an automatic separation and filtration device for associated gas in oil wells. Background Technology

[0002] In oilfield production, the primary method for heating produced fluids is to use associated gas as fuel, employing a water-jacketed heater to heat the fluids. Since associated gas typically contains condensate water, condensate oil, and solid impurities, without proper purification, it is prone to problems such as condensate water clogging gas pipelines, pipeline icing, and condensate oil clogging burners. This leads to reduced combustion efficiency of the water-jacketed heater, exceeding environmental emission standards, and in severe cases, even heater malfunctions and shutdowns, affecting safe and stable operation.

[0003] Currently, a separation umbrella structure is commonly used in field operations to separate condensate water and condensate oil. This method is widely used due to its simple equipment and convenient operation, but it still has the following main problems: the separation efficiency needs to be improved, especially the capture effect of tiny droplets is poor; there is a lack of linkage control, the degree of automation is not high, the operation relies on manual experience, and it is impossible to detect and handle abnormal situations in a timely manner. Patent search reveals that although patent CN212018215U is related to oil well filtration, it discloses an oil well filtration device for oil impurities, which is not related to the problem that this utility model aims to solve. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides an automatic separation and filtration device for associated gas in oil wells, the technical solution of which is as follows: An automatic associated gas separation and filtration device for oil wells includes a housing, a separator, a liquid reservoir, a stabilizer, a dual filter, an automatic controller, and pipelines. The separator, liquid reservoir, stabilizer, and dual filter are installed inside the housing, with the liquid reservoir connected to the stabilizer. The automatic controller is installed outside the housing. The pipelines include a first gas pipe, a second gas pipe, a third gas pipe, a fourth gas pipe, a bypass gas pipe, a first liquid pipe, a second liquid pipe, a third liquid pipe, and a drain pipe. The first gas pipe passes from the outside of the housing into the housing and connects to the air inlet of the separator, with a first gas valve installed on the pipeline. One end of the second gas pipe is connected to the air outlet of the separator, and the other end is connected to the air inlet of the liquid reservoir, with a second gas valve installed on the pipeline. One end of the third gas pipe is connected to the air outlet of the stabilizer, and the other end is connected to the air inlet of the dual filter, with a third gas valve installed on the pipeline. The fourth air pipe connects to the outlet of the dual filter at one end and extends out of the housing at the other end. A fourth and fifth air valve are installed sequentially on the pipe. A bypass air pipe connects to the third air pipe at one end and is located after the third air valve. It connects to the fourth air pipe at the other end and is located between the fourth and fifth air valves. A bypass air valve is installed on the pipe. The upper end of the first liquid pipe connects to the outlet of the separator. A first explosion-proof electric ball valve is installed on the pipe. The upper end of the second liquid pipe connects to the outlet of the dual filter. A second explosion-proof electric ball valve is installed on the pipe. One end of the third liquid pipe connects to the lower ends of both the first and second liquid pipes, and the other end connects to the inlet of the liquid reservoir. The drain pipe connects to the drain outlet of the liquid reservoir. An electric drain valve is installed on the pipe. The first explosion-proof electric ball valve, the second explosion-proof electric ball valve, and the electric drain valve are connected to the automatic controller via cables.

[0005] Furthermore, the separator includes a longitudinally arranged outer cylinder, a flange cover on the top of the outer cylinder, and an integrated labyrinth fog-catching and separating mechanism inside the outer cylinder that is suspended from the flange cover by a lifting ring. The integrated labyrinth fog-catching and separating mechanism includes a separating body and a fog-catching umbrella mounted on its upper part. Several baffles are staggered inside the separating body, and a perforated plate is provided at the bottom of the separating body.

[0006] Furthermore, the liquid reservoir includes a horizontally arranged outer cylinder and a longitudinally arranged finned condenser tube. The lower end of the finned condenser tube is connected to the outer cylinder, and the upper end is connected to the stabilizer. A horizontally arranged flute-shaped gas distribution pipe is provided inside the outer cylinder.

[0007] Furthermore, the stabilizer is cylindrical and arranged laterally.

[0008] Furthermore, the dual filter includes a longitudinally arranged outer cylinder, inside which are arranged a transverse lower filter element and a transverse upper filter element connected in series, and flange covers are provided on the outer sides of both the transverse lower filter element and the transverse upper filter element.

[0009] Furthermore, the separator's outer cylinder is equipped with a first level switch at its lower part, the reservoir's outer cylinder is equipped with a second level switch and a temperature transmitter, and the dual filter's outer cylinder is equipped with a first differential pressure transmitter at its upper part, a second differential pressure transmitter in its middle part, and a third level switch at its lower part. The first level switch, second level switch, third level switch, temperature transmitter, first differential pressure transmitter, and second differential pressure transmitter are all connected to the automatic controller via cables. The first level switch, second level switch, and third level switch are all float level switches.

[0010] Furthermore, the fourth gas pipe is equipped with a pressure transmitter, which is connected to the automatic controller via a cable.

[0011] Furthermore, explosion-proof low-temperature temperature limiting heating tapes are installed on the surfaces of the first liquid pipe, the second liquid pipe, the third liquid pipe, and the sewage pipe.

[0012] Furthermore, a combustible gas detector and an exhaust fan are installed on the inner wall of the enclosure, and the combustible gas detector and exhaust fan are connected to an automatic controller via cables.

[0013] Furthermore, the automatic controller employs a PLC controller and establishes communication with the mobile terminal.

[0014] Compared with the prior art, the present invention mainly has the following beneficial technical effects: 1. By performing a series of separations and filtrations on the associated gas, condensate water and light oil components are effectively removed. The separation and filtration efficiency is improved by 10% compared to previous devices, ensuring that the treated associated gas fully meets the standard requirements for use in heating furnaces. The separation efficiency of large droplets is improved by adding a separator and an integrated labyrinth mist-catching separation mechanism, while the separation efficiency of small droplets is improved by adding a dual filter and a double-layer filter element, while also facilitating maintenance and modular disassembly.

[0015] 2. Properly resolve the challenge of balancing filter replacement with equipment operation, ensuring uninterrupted production during filter replacement and balancing equipment maintenance with production efficiency. By adding bypass air pipes and bypass air valves, dual filter replacement can be performed without interrupting the machine, ensuring continuous equipment operation and not affecting production efficiency.

[0016] 3. Automatic drainage is implemented to prevent liquid accumulation from affecting normal equipment operation. This is achieved by adding an explosion-proof electric ball valve and a float level switch, thus preventing liquid accumulation.

[0017] 4. Enhanced automation levels enable timely early warnings, automatic elimination of safety hazards, and improved operational convenience. By adding an automatic controller and linking it with level switches and transmitters, the level of automation is improved, allowing for timely detection and handling of abnormal situations. The addition of combustible gas alarms and exhaust fans enhances gas leak early warning and automatic venting functions.

[0018] 5. Improved gas dehydration efficiency, helping associated gas meet standards. By adding a flute-shaped gas distributor, the gas in the reservoir is more evenly distributed, improving separation efficiency. The addition of finned condenser tubes further enhances gas dehydration efficiency through secondary condensation and sedimentation.

[0019] 6. Effectively prevents freezing and ensures smooth liquid flow. Freezing is effectively prevented by adding an explosion-proof low-temperature limiting heating tape.

[0020] 7. By adopting a PLC controller and establishing communication with the mobile terminal, the ease of operation is improved. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structural layout of this utility model; Figure 2 This is a schematic diagram of the separator structure of this utility model; Figure 3 A schematic diagram of the flute-shaped gas distribution pipe structure installed inside the liquid storage device of this utility model; Figure 4 This is a side view sectional diagram of the dual filter structure of this utility model; In the diagram: 1-First gas valve, 2-First gas pipe, 3-Separator, 4-Temperature transmitter, 5-Third gas valve, 6-Third gas pipe, 7-Finned condenser tube, 8-Second liquid level switch, 9-Fifth gas valve, 10-Pressure transmitter, 11-Fourth gas pipe, 12-Fourth gas valve, 13-Bypass gas pipe, 14-Bypass gas valve, 15-Exhaust fan, 16-Combustible gas alarm, 17-Automatic controller, 18-Cable, 19-Stabilizer, 20-Electric drain valve, 21-Drain pipe, 22-Liquid reservoir, 23-Third liquid level switch 24-Dual filter, 25-Second liquid pipe, 26-Explosion-proof low-temperature limiting heat tracing cable, 27-Third liquid pipe, 28-Second gas pipe, 29-Second gas valve, 30-First liquid level switch, 31-First explosion-proof electric ball valve, 32-First liquid pipe, 33-Second explosion-proof electric ball valve, 34-Flange cover, 35-Lifting ring, 36-Mist eliminator, 37-Separation body, 38-Baffle plate, 39-Flute-type gas distribution pipe, 40-First differential pressure transmitter, 41-Upper transverse filter element, 42-Lower transverse filter element, 43-Second differential pressure transmitter. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the embodiments and accompanying drawings. Example 1

[0023] See Figures 1 to 4An automatic separation and filtration device for associated gas from oil wells includes a housing, a separator 3, a liquid reservoir 22, a stabilizer 19, a dual filter 24, an automatic controller 17, and pipelines. The separator 3, liquid reservoir 22, stabilizer 19, and dual filter 24 are installed inside the housing, with the liquid reservoir 22 connected to the stabilizer 19. The automatic controller 17 is installed outside the housing. The pipelines include a first gas pipe 2, a second gas pipe 28, a third gas pipe 6, a fourth gas pipe 11, a bypass gas pipe 13, a first liquid pipe 32, a second liquid pipe 25, a third liquid pipe 27, and a drain pipe 21. The first gas pipe 2 passes from the outside of the housing into the housing and connects to the air inlet of the separator 3, with a first gas valve 1 installed on the pipeline. One end of the second gas pipe 28 is connected to the air outlet of the separator 3, and the other end is connected to the air inlet of the liquid reservoir 22, with a second gas valve 29 installed on the pipeline. One end of the third gas pipe 6 is connected to the air outlet of the stabilizer 19, and the other end is connected to the air inlet of the dual filter 24, with a third gas valve installed on the pipeline. 5; One end of the fourth air pipe 11 is connected to the outlet of the dual filter 24, and the other end extends out of the housing. The fourth air valve 12 and the fifth air valve 9 are installed sequentially on the pipe; One end of the bypass air pipe 13 is connected to the third air pipe 6 and is located behind the third air valve 5. The other end is connected to the fourth air pipe 11 and is located between the fourth air valve 12 and the fifth air valve 9. A bypass air valve 14 is installed on the pipe; The upper end of the first liquid pipe 32 is connected to the outlet of the separator 3. A first explosion-proof electric ball valve 31 is installed on the pipe; The... The upper end of the two-liquid pipe 25 is connected to the outlet of the dual filter 24, and a second explosion-proof electric ball valve 33 is installed on the pipe; one end of the third liquid pipe 27 is connected to the lower end of the first liquid pipe 32 and the second liquid pipe 25 respectively, and the other end is connected to the inlet of the liquid reservoir 22; the drain pipe 21 is connected to the drain outlet of the liquid reservoir 22, and an electric drain valve 20 is installed on the pipe; the first explosion-proof electric ball valve 31, the second explosion-proof electric ball valve 33 and the electric drain valve 20 are connected to the automatic controller 17 through the cable 18. Example 2

[0024] See Figures 1 to 4An automatic separation and filtration device for associated gas from oil wells includes a housing, a separator 3, a liquid reservoir 22, a stabilizer 19, a dual filter 24, an automatic controller 17, and pipelines. The separator 3, liquid reservoir 22, stabilizer 19, and dual filter 24 are installed inside the housing, with the liquid reservoir 22 connected to the stabilizer 19. The automatic controller 17 is installed outside the housing. The pipelines include a first gas pipe 2, a second gas pipe 28, a third gas pipe 6, a fourth gas pipe 11, a bypass gas pipe 13, a first liquid pipe 32, a second liquid pipe 25, a third liquid pipe 27, and a drain pipe 21. The first gas pipe 2 passes from the outside of the housing into the housing and connects to the air inlet of the separator 3, with a first gas valve 1 installed on the pipeline. One end of the second gas pipe 28 is connected to the air outlet of the separator 3, and the other end is connected to the air inlet of the liquid reservoir 22, with a second gas valve 29 installed on the pipeline. One end of the third gas pipe 6 is connected to the air outlet of the stabilizer 19, and the other end is connected to the air inlet of the dual filter 24, with a third gas valve installed on the pipeline. 5; One end of the fourth air pipe 11 is connected to the outlet of the dual filter 24, and the other end extends out of the housing. The fourth air valve 12 and the fifth air valve 9 are installed sequentially on the pipe; One end of the bypass air pipe 13 is connected to the third air pipe 6 and is located behind the third air valve 5. The other end is connected to the fourth air pipe 11 and is located between the fourth air valve 12 and the fifth air valve 9. A bypass air valve 14 is installed on the pipe; The upper end of the first liquid pipe 32 is connected to the outlet of the separator 3. A first explosion-proof electric ball valve 31 is installed on the pipe; The... The upper end of the two-liquid pipe 25 is connected to the outlet of the dual filter 24, and a second explosion-proof electric ball valve 33 is installed on the pipe; one end of the third liquid pipe 27 is connected to the lower end of the first liquid pipe 32 and the second liquid pipe 25 respectively, and the other end is connected to the inlet of the liquid reservoir 22; the drain pipe 21 is connected to the drain outlet of the liquid reservoir 22, and an electric drain valve 20 is installed on the pipe; the first explosion-proof electric ball valve 31, the second explosion-proof electric ball valve 33 and the electric drain valve 20 are connected to the automatic controller 17 through the cable 18.

[0025] The separator 3 includes a longitudinally arranged outer cylinder, with a flange cover 34 on the top of the outer cylinder. Inside the outer cylinder is an integrated labyrinth fog-catching and separating mechanism that is suspended from the flange cover 34 by a lifting ring 35. The integrated labyrinth fog-catching and separating mechanism includes a separating body 37 and a fog-catching umbrella 36 mounted on its upper part. Several baffles 38 are staggered inside the separating body 37, and a perforated plate is provided at the bottom of the separating body 37. Example 3

[0026] See Figures 1 to 4An automatic separation and filtration device for associated gas from oil wells includes a housing, a separator 3, a liquid reservoir 22, a stabilizer 19, a dual filter 24, an automatic controller 17, and pipelines. The separator 3, liquid reservoir 22, stabilizer 19, and dual filter 24 are installed inside the housing, with the liquid reservoir 22 connected to the stabilizer 19. The automatic controller 17 is installed outside the housing. The pipelines include a first gas pipe 2, a second gas pipe 28, a third gas pipe 6, a fourth gas pipe 11, a bypass gas pipe 13, a first liquid pipe 32, a second liquid pipe 25, a third liquid pipe 27, and a drain pipe 21. The first gas pipe 2 passes from the outside of the housing into the housing and connects to the air inlet of the separator 3, with a first gas valve 1 installed on the pipeline. One end of the second gas pipe 28 is connected to the air outlet of the separator 3, and the other end is connected to the air inlet of the liquid reservoir 22, with a second gas valve 29 installed on the pipeline. One end of the third gas pipe 6 is connected to the air outlet of the stabilizer 19, and the other end is connected to the air inlet of the dual filter 24, with a third gas valve installed on the pipeline. 5; One end of the fourth air pipe 11 is connected to the outlet of the dual filter 24, and the other end extends out of the housing. The fourth air valve 12 and the fifth air valve 9 are installed sequentially on the pipe; One end of the bypass air pipe 13 is connected to the third air pipe 6 and is located behind the third air valve 5. The other end is connected to the fourth air pipe 11 and is located between the fourth air valve 12 and the fifth air valve 9. A bypass air valve 14 is installed on the pipe; The upper end of the first liquid pipe 32 is connected to the outlet of the separator 3. A first explosion-proof electric ball valve 31 is installed on the pipe; The... The upper end of the two-liquid pipe 25 is connected to the outlet of the dual filter 24, and a second explosion-proof electric ball valve 33 is installed on the pipe; one end of the third liquid pipe 27 is connected to the lower end of the first liquid pipe 32 and the second liquid pipe 25 respectively, and the other end is connected to the inlet of the liquid reservoir 22; the drain pipe 21 is connected to the drain outlet of the liquid reservoir 22, and an electric drain valve 20 is installed on the pipe; the first explosion-proof electric ball valve 31, the second explosion-proof electric ball valve 33 and the electric drain valve 20 are connected to the automatic controller 17 through the cable 18.

[0027] The separator 3 includes a longitudinally arranged outer cylinder, with a flange cover 34 on the top of the outer cylinder. Inside the outer cylinder is an integrated labyrinth fog-catching and separating mechanism that is suspended from the flange cover 34 by a lifting ring 35. The integrated labyrinth fog-catching and separating mechanism includes a separating body 37 and a fog-catching umbrella 36 mounted on its upper part. Several baffles 38 are staggered inside the separating body 37, and a perforated plate is provided at the bottom of the separating body 37.

[0028] The liquid reservoir 22 includes a horizontally arranged outer cylinder and a longitudinally arranged finned condenser tube 7. The lower end of the finned condenser tube 7 is connected to the outer cylinder and the upper end is connected to the stabilizer 19. The outer cylinder is provided with a horizontally arranged flute-shaped gas distribution pipe 39, which can make the gas distribution more uniform and improve the separation efficiency. The stabilizer 19 is cylindrical and arranged horizontally. Example 4

[0029] See Figures 1 to 4An automatic separation and filtration device for associated gas from oil wells includes a housing, a separator 3, a liquid reservoir 22, a stabilizer 19, a dual filter 24, an automatic controller 17, and pipelines. The separator 3, liquid reservoir 22, stabilizer 19, and dual filter 24 are installed inside the housing, with the liquid reservoir 22 connected to the stabilizer 19. The automatic controller 17 is installed outside the housing. The pipelines include a first gas pipe 2, a second gas pipe 28, a third gas pipe 6, a fourth gas pipe 11, a bypass gas pipe 13, a first liquid pipe 32, a second liquid pipe 25, a third liquid pipe 27, and a drain pipe 21. The first gas pipe 2 passes from the outside of the housing into the housing and connects to the air inlet of the separator 3, with a first gas valve 1 installed on the pipeline. One end of the second gas pipe 28 is connected to the air outlet of the separator 3, and the other end is connected to the air inlet of the liquid reservoir 22, with a second gas valve 29 installed on the pipeline. One end of the third gas pipe 6 is connected to the air outlet of the stabilizer 19, and the other end is connected to the air inlet of the dual filter 24, with a third gas valve installed on the pipeline. 5; One end of the fourth air pipe 11 is connected to the outlet of the dual filter 24, and the other end extends out of the housing. The fourth air valve 12 and the fifth air valve 9 are installed sequentially on the pipe; One end of the bypass air pipe 13 is connected to the third air pipe 6 and is located behind the third air valve 5. The other end is connected to the fourth air pipe 11 and is located between the fourth air valve 12 and the fifth air valve 9. A bypass air valve 14 is installed on the pipe; The upper end of the first liquid pipe 32 is connected to the outlet of the separator 3. A first explosion-proof electric ball valve 31 is installed on the pipe; The... The upper end of the two-liquid pipe 25 is connected to the outlet of the dual filter 24, and a second explosion-proof electric ball valve 33 is installed on the pipe; one end of the third liquid pipe 27 is connected to the lower end of the first liquid pipe 32 and the second liquid pipe 25 respectively, and the other end is connected to the inlet of the liquid reservoir 22; the drain pipe 21 is connected to the drain outlet of the liquid reservoir 22, and an electric drain valve 20 is installed on the pipe; the first explosion-proof electric ball valve 31, the second explosion-proof electric ball valve 33 and the electric drain valve 20 are connected to the automatic controller 17 through the cable 18.

[0030] The separator 3 includes a longitudinally arranged outer cylinder, with a flange cover 34 on the top of the outer cylinder. Inside the outer cylinder is an integrated labyrinth fog-catching and separating mechanism that is suspended from the flange cover 34 by a lifting ring 35. The integrated labyrinth fog-catching and separating mechanism includes a separating body 37 and a fog-catching umbrella 36 mounted on its upper part. Several baffles 38 are staggered inside the separating body 37, and a perforated plate is provided at the bottom of the separating body 37.

[0031] The liquid reservoir 22 includes a horizontally arranged outer cylinder and a longitudinally arranged finned condenser tube 7. The lower end of the finned condenser tube 7 is connected to the outer cylinder and the upper end is connected to the stabilizer 19. The outer cylinder is provided with a horizontally arranged flute-shaped gas distribution pipe 39, which can make the gas distribution more uniform and improve the separation efficiency. The stabilizer 19 is cylindrical and arranged horizontally.

[0032] The dual filter 24 includes a longitudinally arranged outer cylinder, inside which are arranged a transverse lower filter element 42 and a transverse upper filter element 41 connected in series. Flange covers 34 are provided on the outside of both the transverse lower filter element 42 and the transverse upper filter element 41. The flange covers 34 are bolted together for easy installation and disassembly. Example 5

[0033] See Figures 1 to 4 An automatic separation and filtration device for associated gas from oil wells includes a housing, a separator 3, a liquid reservoir 22, a stabilizer 19, a dual filter 24, an automatic controller 17, and pipelines. The separator 3, liquid reservoir 22, stabilizer 19, and dual filter 24 are installed inside the housing, with the liquid reservoir 22 connected to the stabilizer 19. The automatic controller 17 is installed outside the housing. The pipelines include a first gas pipe 2, a second gas pipe 28, a third gas pipe 6, a fourth gas pipe 11, a bypass gas pipe 13, a first liquid pipe 32, a second liquid pipe 25, a third liquid pipe 27, and a drain pipe 21. The first gas pipe 2 passes from the outside of the housing into the housing and connects to the air inlet of the separator 3, with a first gas valve 1 installed on the pipeline. One end of the second gas pipe 28 is connected to the air outlet of the separator 3, and the other end is connected to the air inlet of the liquid reservoir 22, with a second gas valve 29 installed on the pipeline. One end of the third gas pipe 6 is connected to the air outlet of the stabilizer 19, and the other end is connected to the air inlet of the dual filter 24, with a third gas valve installed on the pipeline. 5; One end of the fourth air pipe 11 is connected to the outlet of the dual filter 24, and the other end extends out of the housing. The fourth air valve 12 and the fifth air valve 9 are installed sequentially on the pipe; One end of the bypass air pipe 13 is connected to the third air pipe 6 and is located behind the third air valve 5. The other end is connected to the fourth air pipe 11 and is located between the fourth air valve 12 and the fifth air valve 9. A bypass air valve 14 is installed on the pipe; The upper end of the first liquid pipe 32 is connected to the outlet of the separator 3. A first explosion-proof electric ball valve 31 is installed on the pipe; The... The upper end of the two-liquid pipe 25 is connected to the outlet of the dual filter 24, and a second explosion-proof electric ball valve 33 is installed on the pipe; one end of the third liquid pipe 27 is connected to the lower end of the first liquid pipe 32 and the second liquid pipe 25 respectively, and the other end is connected to the inlet of the liquid reservoir 22; the drain pipe 21 is connected to the drain outlet of the liquid reservoir 22, and an electric drain valve 20 is installed on the pipe; the first explosion-proof electric ball valve 31, the second explosion-proof electric ball valve 33 and the electric drain valve 20 are connected to the automatic controller 17 through the cable 18.

[0034] The separator 3 includes a longitudinally arranged outer cylinder, with a flange cover 34 on the top of the outer cylinder. Inside the outer cylinder is an integrated labyrinth fog-catching and separating mechanism that is suspended from the flange cover 34 by a lifting ring 35. The integrated labyrinth fog-catching and separating mechanism includes a separating body 37 and a fog-catching umbrella 36 mounted on its upper part. Several baffles 38 are staggered inside the separating body 37, and a perforated plate is provided at the bottom of the separating body 37.

[0035] The liquid reservoir 22 includes a horizontally arranged outer cylinder and a longitudinally arranged finned condenser tube 7. The lower end of the finned condenser tube 7 is connected to the outer cylinder and the upper end is connected to the stabilizer 19. The outer cylinder is provided with a horizontally arranged flute-shaped gas distribution pipe 39, which can make the gas distribution more uniform and improve the separation efficiency. The stabilizer 19 is cylindrical and arranged horizontally.

[0036] The dual filter 24 includes a longitudinally arranged outer cylinder, inside which are arranged a transverse lower filter element 42 and a transverse upper filter element 41 connected in series. Flange covers 34 are provided on the outside of both the transverse lower filter element 42 and the transverse upper filter element 41. The flange covers 34 are bolted together for easy installation and disassembly.

[0037] The outer cylinder of separator 3 is equipped with a first level switch 30 at the bottom, the outer cylinder of reservoir 22 is equipped with a second level switch 8 and a temperature transmitter 4, the outer cylinder of dual filter 24 is equipped with a first differential pressure transmitter 40 at the top, a second differential pressure transmitter 43 in the middle, and a third level switch 23 at the bottom, and a pressure transmitter 10 is installed on the fourth gas pipe 11. The first level switch 30, the second level switch 8, the third level switch 23, the temperature transmitter 4, the first differential pressure transmitter 40, the second differential pressure transmitter 43, and the pressure transmitter 10 are all connected to the automatic controller 17 via cable 18. The first level switch 30, the second level switch 8, and the third level switch 23 are all float level switches. The float level switch is an automated liquid level control device based on the principle of magnetic force. The float drives the magnet to trigger the reed switch contact to open and close as the liquid level rises and falls, realizing liquid level control without mechanical contact. Example 6

[0038] See Figures 1 to 4An automatic separation and filtration device for associated gas from oil wells includes a housing, a separator 3, a liquid reservoir 22, a stabilizer 19, a dual filter 24, an automatic controller 17, and pipelines. The separator 3, liquid reservoir 22, stabilizer 19, and dual filter 24 are installed inside the housing, with the liquid reservoir 22 connected to the stabilizer 19. The automatic controller 17 is installed outside the housing. The pipelines include a first gas pipe 2, a second gas pipe 28, a third gas pipe 6, a fourth gas pipe 11, a bypass gas pipe 13, a first liquid pipe 32, a second liquid pipe 25, a third liquid pipe 27, and a drain pipe 21. The first gas pipe 2 passes from the outside of the housing into the housing and connects to the air inlet of the separator 3, with a first gas valve 1 installed on the pipeline. One end of the second gas pipe 28 is connected to the air outlet of the separator 3, and the other end is connected to the air inlet of the liquid reservoir 22, with a second gas valve 29 installed on the pipeline. One end of the third gas pipe 6 is connected to the air outlet of the stabilizer 19, and the other end is connected to the air inlet of the dual filter 24, with a third gas valve installed on the pipeline. 5; One end of the fourth air pipe 11 is connected to the outlet of the dual filter 24, and the other end extends out of the housing. The fourth air valve 12 and the fifth air valve 9 are installed sequentially on the pipe; One end of the bypass air pipe 13 is connected to the third air pipe 6 and is located behind the third air valve 5. The other end is connected to the fourth air pipe 11 and is located between the fourth air valve 12 and the fifth air valve 9. A bypass air valve 14 is installed on the pipe; The upper end of the first liquid pipe 32 is connected to the outlet of the separator 3. A first explosion-proof electric ball valve 31 is installed on the pipe; The... The upper end of the two-liquid pipe 25 is connected to the outlet of the dual filter 24, and a second explosion-proof electric ball valve 33 is installed on the pipe; one end of the third liquid pipe 27 is connected to the lower end of the first liquid pipe 32 and the second liquid pipe 25 respectively, and the other end is connected to the inlet of the liquid reservoir 22; the drain pipe 21 is connected to the drain outlet of the liquid reservoir 22, and an electric drain valve 20 is installed on the pipe; the first explosion-proof electric ball valve 31, the second explosion-proof electric ball valve 33 and the electric drain valve 20 are connected to the automatic controller 17 through the cable 18.

[0039] The separator 3 includes a longitudinally arranged outer cylinder, with a flange cover 34 on the top of the outer cylinder. Inside the outer cylinder is an integrated labyrinth fog-catching and separating mechanism that is suspended from the flange cover 34 by a lifting ring 35. The integrated labyrinth fog-catching and separating mechanism includes a separating body 37 and a fog-catching umbrella 36 mounted on its upper part. Several baffles 38 are staggered inside the separating body 37, and a perforated plate is provided at the bottom of the separating body 37.

[0040] The liquid reservoir 22 includes a horizontally arranged outer cylinder and a longitudinally arranged finned condenser tube 7. The lower end of the finned condenser tube 7 is connected to the outer cylinder and the upper end is connected to the stabilizer 19. The outer cylinder is provided with a horizontally arranged flute-shaped gas distribution pipe 39, which can make the gas distribution more uniform and improve the separation efficiency. The stabilizer 19 is cylindrical and arranged horizontally.

[0041] The dual filter 24 includes a longitudinally arranged outer cylinder, inside which are arranged a transverse lower filter element 42 and a transverse upper filter element 41 connected in series. Flange covers 34 are provided on the outside of both the transverse lower filter element 42 and the transverse upper filter element 41. The flange covers 34 are bolted together for easy installation and disassembly.

[0042] The outer cylinder of separator 3 is equipped with a first level switch 30 at the bottom, the outer cylinder of reservoir 22 is equipped with a second level switch 8 and a temperature transmitter 4, the outer cylinder of dual filter 24 is equipped with a first differential pressure transmitter 40 at the top, a second differential pressure transmitter 43 in the middle, and a third level switch 23 at the bottom, and a pressure transmitter 10 is installed on the fourth gas pipe 11. The first level switch 30, the second level switch 8, the third level switch 23, the temperature transmitter 4, the first differential pressure transmitter 40, the second differential pressure transmitter 43, and the pressure transmitter 10 are all connected to the automatic controller 17 via cable 18. The first level switch 30, the second level switch 8, and the third level switch 23 are all float level switches. The float level switch is an automated liquid level control device based on the principle of magnetic force. The float drives the magnet to trigger the reed switch contact to open and close as the liquid level rises and falls, realizing liquid level control without mechanical contact.

[0043] The surfaces of the first liquid pipe 32, the second liquid pipe 25, the third liquid pipe 27, and the drain pipe 21 are all equipped with explosion-proof low-temperature temperature limiting heating tape 26. When the temperature of the condensate water in the associated gas pipeline is lower than the set threshold, the temperature control system will automatically start the heating function to prevent freezing. Example 7

[0044] See Figures 1 to 4An automatic separation and filtration device for associated gas from oil wells includes a housing, a separator 3, a liquid reservoir 22, a stabilizer 19, a dual filter 24, an automatic controller 17, and pipelines. The separator 3, liquid reservoir 22, stabilizer 19, and dual filter 24 are installed inside the housing, with the liquid reservoir 22 connected to the stabilizer 19. The automatic controller 17 is installed outside the housing. The pipelines include a first gas pipe 2, a second gas pipe 28, a third gas pipe 6, a fourth gas pipe 11, a bypass gas pipe 13, a first liquid pipe 32, a second liquid pipe 25, a third liquid pipe 27, and a drain pipe 21. The first gas pipe 2 passes from the outside of the housing into the housing and connects to the air inlet of the separator 3, with a first gas valve 1 installed on the pipeline. One end of the second gas pipe 28 is connected to the air outlet of the separator 3, and the other end is connected to the air inlet of the liquid reservoir 22, with a second gas valve 29 installed on the pipeline. One end of the third gas pipe 6 is connected to the air outlet of the stabilizer 19, and the other end is connected to the air inlet of the dual filter 24, with a third gas valve installed on the pipeline. 5; One end of the fourth air pipe 11 is connected to the outlet of the dual filter 24, and the other end extends out of the housing. The fourth air valve 12 and the fifth air valve 9 are installed sequentially on the pipe; One end of the bypass air pipe 13 is connected to the third air pipe 6 and is located behind the third air valve 5. The other end is connected to the fourth air pipe 11 and is located between the fourth air valve 12 and the fifth air valve 9. A bypass air valve 14 is installed on the pipe; The upper end of the first liquid pipe 32 is connected to the outlet of the separator 3. A first explosion-proof electric ball valve 31 is installed on the pipe; The... The upper end of the two-liquid pipe 25 is connected to the outlet of the dual filter 24, and a second explosion-proof electric ball valve 33 is installed on the pipe; one end of the third liquid pipe 27 is connected to the lower end of the first liquid pipe 32 and the second liquid pipe 25 respectively, and the other end is connected to the inlet of the liquid reservoir 22; the drain pipe 21 is connected to the drain outlet of the liquid reservoir 22, and an electric drain valve 20 is installed on the pipe; the first explosion-proof electric ball valve 31, the second explosion-proof electric ball valve 33 and the electric drain valve 20 are connected to the automatic controller 17 through the cable 18.

[0045] The separator 3 includes a longitudinally arranged outer cylinder, with a flange cover 34 on the top of the outer cylinder. Inside the outer cylinder is an integrated labyrinth fog-catching and separating mechanism that is suspended from the flange cover 34 by a lifting ring 35. The integrated labyrinth fog-catching and separating mechanism includes a separating body 37 and a fog-catching umbrella 36 mounted on its upper part. Several baffles 38 are staggered inside the separating body 37, and a perforated plate is provided at the bottom of the separating body 37.

[0046] The liquid reservoir 22 includes a horizontally arranged outer cylinder and a longitudinally arranged finned condenser tube 7. The lower end of the finned condenser tube 7 is connected to the outer cylinder and the upper end is connected to the stabilizer 19. The outer cylinder is provided with a horizontally arranged flute-shaped gas distribution pipe 39, which can make the gas distribution more uniform and improve the separation efficiency. The stabilizer 19 is cylindrical and arranged horizontally.

[0047] The dual filter 24 includes a longitudinally arranged outer cylinder, inside which are arranged a transverse lower filter element 42 and a transverse upper filter element 41 connected in series. Flange covers 34 are provided on the outside of both the transverse lower filter element 42 and the transverse upper filter element 41. The flange covers 34 are bolted together for easy installation and disassembly.

[0048] The outer cylinder of separator 3 is equipped with a first level switch 30 at the bottom, the outer cylinder of reservoir 22 is equipped with a second level switch 8 and a temperature transmitter 4, the outer cylinder of dual filter 24 is equipped with a first differential pressure transmitter 40 at the top, a second differential pressure transmitter 43 in the middle, and a third level switch 23 at the bottom, and a pressure transmitter 10 is installed on the fourth gas pipe 11. The first level switch 30, the second level switch 8, the third level switch 23, the temperature transmitter 4, the first differential pressure transmitter 40, the second differential pressure transmitter 43, and the pressure transmitter 10 are all connected to the automatic controller 17 via cable 18. The first level switch 30, the second level switch 8, and the third level switch 23 are all float level switches. The float level switch is an automated liquid level control device based on the principle of magnetic force. The float drives the magnet to trigger the reed switch contact to open and close as the liquid level rises and falls, realizing liquid level control without mechanical contact.

[0049] The surfaces of the first liquid pipe 32, the second liquid pipe 25, the third liquid pipe 27, and the drain pipe 21 are all equipped with explosion-proof low-temperature temperature limiting heating tape 26. When the temperature of the condensate water in the associated gas pipeline is lower than the set threshold, the temperature control system will automatically start the heating function to prevent freezing.

[0050] A combustible gas detector 16 and an exhaust fan 15 are installed on the inner wall of the enclosure. The combustible gas detector 16 and the exhaust fan 15 are connected to the automatic controller 17 via a cable 18. The automatic controller 17 is a PLC controller and establishes communication with a mobile terminal so that the operator can receive instructions via mobile phone.

[0051] To enable those skilled in the art to better understand this utility model, its basic working principle is briefly described below: Natural gas enters the separator 3 and its internal integrated labyrinth mist-catching and separating mechanism through the first gas valve 1. Large droplets in the natural gas are effectively separated through the labyrinth design and fall to the bottom. When the liquid level rises to a certain height, the first liquid level switch 30 senses the liquid level change and triggers the first explosion-proof electric ball valve 31 to open, discharging the separated liquid to the liquid storage tank 22. After separation by separator 3, the natural gas flows out from the gap at the bottom of the mist-catching umbrella 36 and enters the liquid storage tank 22 through the second gas valve 29. The flute-shaped gas distribution pipe 39 inside the liquid storage tank 22 ensures that the gas entering the liquid storage tank 22 is evenly distributed, thereby improving the separation efficiency. At the same time, the finned condenser 7 installed on the upper part of the liquid storage tank 22 further improves the dehydration efficiency of the gas through secondary condensation and sedimentation, causing the water in the natural gas to condense and settle. When the second liquid level switch 8 detects that the liquid level is too high, the automatic controller 17 controls the electric drain valve 20 to automatically drain the liquid, preventing excessive liquid accumulation from affecting the normal operation of the device. When the temperature of the condensate is lower than the set threshold, the explosion-proof low-temperature limiting heat tracing cable 26 will automatically start the heating function to prevent the condensate from freezing and ensure the normal operation of the device in a low-temperature environment. The associated gas, after being processed by the reservoir 22, enters the dual filter 24 via the stabilizer 19 and the third gas valve 5. It passes through the high-precision lower transverse filter element 42 and upper transverse filter element 41 to remove tiny droplets and solid impurities from the natural gas, further filtering fine droplets to ensure the purity of the natural gas. The first differential pressure transmitter 40 and the second differential pressure transmitter 43 are used to monitor the filter element clogging in real time. When the differential pressure of the filter element exceeds the set value, the automatic controller 17 sends an alarm message through the cloud platform to remind the operator to replace the filter element in time to ensure the filtration effect and the normal operation of the device. When the liquid accumulation reaches a preset threshold, the third liquid level switch 23 senses the liquid level change and triggers the second explosion-proof electric ball valve 33 to automatically open, realizing automatic drainage to the reservoir 22 without manual intervention, improving the automation level and operating efficiency of the device. The associated gas, after being processed by the dual filter 24, is discharged through the fifth gas valve 9 to enter the subsequent process.

[0052] To achieve continuous operation of the filtration system, this invention incorporates a bypass pipeline switching design. When the filter element of the dual filter 24 becomes clogged and needs replacement, the operation procedure is as follows: First, open the bypass air valve 14 and monitor the system pressure in real time through the pressure transmitter 10. After the displayed pressure value returns to the normal range, slowly close the third air valve 5 and the fourth air valve 12 in sequence. After completing the filter element replacement, operate in sequence—first gradually open the third air valve 5 and the fourth air valve 12, and then close the bypass air valve 14 after the system pressure stabilizes. At this point, the filtration system returns to normal operation.

[0053] To enhance safety, a combustible gas alarm 16 and an exhaust fan 15 are also installed. When the combustible gas alarm 16 detects a gas leak, the automatic controller 17 will automatically trigger the exhaust fan 15 to start, promptly discharging the leaked gas.

[0054] The automatic controller 17 is the core control unit of this device. Through connections with sensors such as level switches and differential pressure transmitters, it collects real-time data on liquid level and differential pressure during device operation. When abnormal conditions such as excessively high liquid level or excessive differential pressure are detected, the automatic controller 17 can automatically send alarm messages to the operator via the cloud platform, reminding the operator to take appropriate measures such as draining the liquid or replacing the filter element. This automated control method greatly improves the safety and reliability of the device operation, reduces the workload of manual inspections, and can also promptly detect and address potential problems, ensuring the efficient and stable operation of the associated gas automatic separation and filtration device.

[0055] This invention provides data support for the safe operation of the heating furnace through effective separation and filtration, automatic drainage, liquid level alarm prompts, and automatic heat tracing. It reduces problems such as condensate water clogging gas pipelines, gas pipeline icing, and light oil clogging the burner, which are common with associated gas from oil wells. This prevents poor combustion performance, failure to meet environmental standards, and even malfunctions leading to shutdowns. The device enables remote unattended operation, pushing various data and alarm information to operators in real time via a cloud platform, providing effective data support for the safe operation of the heating furnace.

[0056] This invention provides good separation and filtration of associated gas in oil wells, stable combustion in the heating furnace, increased temperature of produced fluid, low back pressure, and reduced demulsifier usage by 4 tons / well / year.

[0057] This invention utilizes remote automatic data collection, alerts, and alarms via a mobile app to free employees from routine manual inspections, allowing for targeted inspections. This reduces inspection frequency and saves on personnel and vehicle costs, decreasing winter inspections from four to two. Timely and accurate alerts and alarms effectively improve inspection efficiency, reduce high maintenance costs, lower the probability of equipment operating with defects, and reduce downtime by more than 15%.

Claims

1. An automatic separation and filtration device for associated gas from oil wells, characterized in that, The system includes a housing, separator, liquid reservoir, stabilizer, dual filter, automatic controller, and piping. The separator, liquid reservoir, stabilizer, and dual filter are installed inside the housing; the liquid reservoir is connected to the stabilizer. The automatic controller is installed outside the housing. The piping includes a first air pipe, a second air pipe, a third air pipe, a fourth air pipe, a bypass air pipe, a first liquid pipe, a second liquid pipe, a third liquid pipe, and a drain pipe. The first air pipe enters the housing from the outside and connects to the separator's air inlet; a first air valve is installed on the pipe. One end of the second air pipe connects to the separator's air outlet, and the other end connects to the liquid reservoir's air inlet; a second air valve is installed on the pipe. One end of the third air pipe connects to the stabilizer's air outlet, and the other end connects to the dual filter's air inlet; a third air valve is installed on the pipe. One end of the fourth air pipe connects to… The first liquid pipe connects to the outlet of the dual filter, with the other end extending out of the housing. A fourth and fifth air valve are installed sequentially on the pipe. One end of the bypass pipe connects to the third pipe and is positioned after the third air valve; the other end connects to the fourth pipe and is positioned between the fourth and fifth air valves. A bypass valve is installed on this pipe. The upper end of the first liquid pipe connects to the outlet of the separator, and a first explosion-proof electric ball valve is installed on this pipe. The upper end of the second liquid pipe connects to the outlet of the dual filter, and a second explosion-proof electric ball valve is installed on this pipe. One end of the third liquid pipe connects to the lower ends of both the first and second liquid pipes, and the other end connects to the inlet of the liquid reservoir. The drain pipe connects to the drain outlet of the liquid reservoir, and an electric drain valve is installed on this pipe. The first explosion-proof electric ball valve, the second explosion-proof electric ball valve, and the electric drain valve are connected to the automatic controller via cables.

2. The automatic separation and filtration device for associated gas in oil wells according to claim 1, characterized in that, The separator includes a longitudinally arranged outer cylinder with a flange cover at the top. Inside the outer cylinder is an integrated labyrinth fog-catching and separating mechanism that is suspended from the flange cover by a lifting ring. The integrated labyrinth fog-catching and separating mechanism includes a separating body and a fog-catching umbrella mounted on its upper part. Several baffles are staggered inside the separating body, and a perforated plate is provided at the bottom of the separating body.

3. The automatic separation and filtration device for associated gas in oil wells according to claim 1, characterized in that, The liquid reservoir includes a horizontally arranged outer cylinder and a longitudinally arranged finned condenser tube. The lower end of the finned condenser tube is connected to the outer cylinder, and the upper end is connected to the stabilizer. The outer cylinder is provided with a horizontally arranged flute-shaped gas distribution pipe.

4. The automatic separation and filtration device for associated gas in oil wells according to claim 1, characterized in that, The stabilizer is cylindrical and arranged laterally.

5. The automatic separation and filtration device for associated gas in oil wells according to claim 1, characterized in that, The dual filter includes a longitudinally arranged outer cylinder, inside which are arranged a transverse lower filter element and a transverse upper filter element connected in series. Flange covers are provided on the outer sides of both the transverse lower filter element and the transverse upper filter element.

6. The automatic separation and filtration device for associated gas in oil wells according to claim 1, characterized in that, The separator has a first level switch at the bottom of its outer cylinder, and the reservoir has a second level switch and a temperature transmitter at its outer cylinder. The dual filter has a first differential pressure transmitter at the top, a second differential pressure transmitter in the middle, and a third level switch at the bottom of its outer cylinder. The first level switch, the second level switch, the third level switch, the temperature transmitter, the first differential pressure transmitter, and the second differential pressure transmitter are all connected to the automatic controller via cables. The first level switch, the second level switch, and the third level switch are all float level switches.

7. The automatic separation and filtration device for associated gas in oil wells according to claim 1, characterized in that, The fourth gas pipe is equipped with a pressure transmitter, which is connected to the automatic controller via a cable.

8. The automatic separation and filtration device for associated gas in oil wells according to claim 1, characterized in that, The surfaces of the first liquid pipe, the second liquid pipe, the third liquid pipe, and the drain pipe are all equipped with explosion-proof low-temperature temperature limiting heating tapes.

9. An automatic separation and filtration device for associated gas in oil wells according to claim 1, characterized in that, A combustible gas detector and an exhaust fan are installed on the inner wall of the enclosure. The combustible gas detector and the exhaust fan are connected to an automatic controller via cables.

10. An automatic separation and filtration device for associated gas in oil wells according to claim 1, characterized in that, The automatic controller uses a PLC controller and establishes communication with the mobile terminal.

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