Oil reservoir exploitation multi-phase flow separation device with cyclone pre-separation

Abstract

The application discloses a kind of oil reservoir exploitation multiphase flow separation devices with cyclone pre-separation, including cyclone separator body, cyclone separation component, purification and anti-deposition component and gas export and purification component, the inside of the cyclone separator body is installed with cyclone separation component, the inside of the cyclone separation component is installed with purification and anti-deposition component, the inside of the cyclone separation component is installed with gas export and purification component, the honeycomb rectification grid of the front end of micro cyclone channel is used in the application, and the regular pore structure thereof is used to implement initial screening and flow equalization to high sand-containing multiphase fluid, effectively intercepts large-particle solid impurities, prevents them from directly entering micro cyclone channel to cause local blockage or wear, after fluid passes through the honeycomb rectification grid, enters the tapered mouth of micro cyclone channel, the flow rate is increased under the effect of contraction section, and high-intensity rotating flow field is generated along the flow guide path formed by micro helical groove, and the initial separation of oil, gas, water and solid impurities is realized under the action of centrifugal force.

Description

Technical Field

[0001] This invention relates to the field of cyclone separation technology, and more specifically, to a multiphase flow separation device for oil reservoir development with cyclone pre-separation. Background Technology

[0002] The multiphase flow separation device for oil reservoir production with swirl pre-separation is a high-efficiency multiphase flow treatment device integrated into the oil reservoir production system. It is used to quickly separate crude oil, water, gas and solid impurities (such as sand and colloids) at the wellhead or downhole.

[0003] In existing multiphase flow separation devices for oil reservoir development with cyclone pre-separation, crude oil, water, and gas mixtures are typically drawn from the wellhead or downhole and connected to the inlet of the cyclone separator via a delivery pipe. The fluid flows into the cyclone separator, where centrifugal force is used to perform preliminary and efficient separation. Heavier components, such as water, are pushed to the cyclone separator wall and move downwards along the wall, forming an outer spiral flow, while lighter components, such as oil and gas, gather towards the center and move upwards along the axis, forming an inner spiral flow. Next, the pre-separated mixture flows into the main separator, where oil, gas, and water are further separated to achieve higher purity requirements.

[0004] In practical applications, existing technologies are prone to clogging of the inlet and outlet of hydrocyclones by impurities such as high sand content, asphalt deposits, and scaling. This leads to a reduction in the flow channel cross-section and an increase in flow resistance. At the same time, the impurities interfere with and disrupt the stability of the centrifugal field, causing the oil-water interface to become blurred, thus affecting the fluid separation efficiency. Therefore, in order to address the above technical problems, it is necessary to provide a multiphase flow separation device for oil reservoir development with hydrocyclone pre-separation. Summary of the Invention

[0005] The purpose of this invention is to provide a multiphase flow separation device for oil reservoir development with swirl pre-separation to solve the above-mentioned problems.

[0006] To achieve the above objectives, an embodiment of the present invention provides the following technical solution:

[0007] A multiphase flow separation device for oil reservoir development with cyclone pre-separation includes a cyclone separator body, a cyclone separation component, a purification and anti-deposition component, and a gas extraction and purification component. The cyclone separator body houses the cyclone separation component, the cyclone separation component houses the purification and anti-deposition component, and the cyclone separation component houses the gas extraction and purification component. The cyclone separation component includes a porous honeycomb filter element installed inside the cyclone separator body. One end of the porous honeycomb filter element has a cyclone groove, and the interior of the porous honeycomb filter element has multiple micro cyclone channels. A conical opening is installed at the end of each micro cyclone channel near the cyclone groove, and a honeycomb rectifier grid is fixedly connected inside the conical opening.

[0008] The purification and anti-deposition component includes a separation rod fixedly connected to the bottom of the honeycomb rectifier grid. Multiple separation balls are fixedly connected to the outer surface of the separation rod, and purification packing is fixedly connected inside the separation balls. The gas outlet and purification component includes an airflow channel separated from the micro vortex channel inside the porous honeycomb filter element. Multiple support rods are fixedly connected to the inner sidewall of the airflow channel, and a suspension protrusion is fixedly connected to one end of the support rod.

[0009] As a further improvement of the present invention, the interior of the micro vortex channel is provided with multiple micro spiral grooves, which guide the fluid to enter tangentially and form a high-intensity rotating flow field, significantly improving the centrifugal separation efficiency and the clarity of oil-water separation.

[0010] As a further improvement of the present invention, a protective layer is fixedly connected to the outer surface of the separation ball, and multiple separation holes are opened between the protective layer and the purification packing. The protective layer prevents the adhesion of adhesives, while the separation holes allow fluid to enter the interior of the ball and contact the packing, thereby achieving synergistic optimization of impurity adsorption and flow capacity.

[0011] As a further improvement of the present invention, an automatic cleaning component is installed inside the cyclone separation component. The automatic cleaning component includes a motor chamber opened in the inner cavity of the porous honeycomb filter element. A motor is fixedly connected inside the motor chamber. A cleaning plate is fixedly connected to the output shaft end of the motor. A cleaning brush is fixedly connected to the bottom of the cleaning plate. An electromagnet is fixedly connected inside the cleaning plate. The cleaning plate is driven by the motor to rotate the cleaning brush, thereby cleaning the honeycomb rectifier grid.

[0012] As a further improvement of the present invention, a recovery chamber is provided inside the porous honeycomb filter element and the cyclone separator body, and a recovery box is slidably connected inside the recovery chamber, through which impurities such as sand and colloids that have been swept away can be collected in a concentrated manner.

[0013] As a further improvement of the present invention, the top end of the airflow channel is provided with multiple waterproof and breathable membranes II, the bottom of the waterproof and breathable membranes II is provided with multiple vent holes, the bottom of the waterproof and breathable membranes II is fixedly connected with a support wire, one end of the support wire is fixedly connected with a piston plate, the inside of the piston plate is fixedly connected with a magnetic block, the magnetic block and the electromagnet are magnetically connected, and a support spring is sleeved and connected to the outer surface of the support wire. When the electromagnet is energized, it generates a repulsive force with the same pole as the magnetic block, driving the piston plate to move and generate negative pressure, thus drawing in the accumulated gas in the micro vortex channel.

[0014] As a further improvement of the present invention, a composite ring is fixedly connected between the inner cavity sidewalls of the airflow channel, and an elastic composite sleeve is fixedly connected between the lower surface of the composite ring and the piston plate. The elastic composite sleeve has multiple air outlet holes inside. When the elastic composite sleeve is compressed, the air outlet holes are closed to maintain the seal and establish negative pressure. When the sleeve is reset, the air outlet holes are opened to exhaust air.

[0015] As a further improvement of the present invention, the interior of the suspended protrusion is filled with an acid gas deep purification composite filler, and the outer surface of the acid gas deep purification composite filler and the suspended protrusion are provided with multiple outlet holes. The acid gas deep purification composite filler can efficiently adsorb corrosive gas components such as hydrogen sulfide and carbon dioxide, and the outlet holes together achieve uniform ventilation and continuous purification.

[0016] As a further improvement of the present invention, an outlet pipe is provided between the micro vortex channel and the airflow channel. A waterproof and breathable membrane is fixedly connected inside the outlet pipe. Secondary gas-liquid separation is achieved through the waterproof and breathable membrane, allowing only gas to pass through and preventing oil and water from entering.

[0017] As a further improvement of the present invention, a feed inlet is installed on the outer surface of the cyclone separator body, a gas phase outlet is connected to the upper surface of the cyclone separator body, an overflow pipe is installed on the right side of the cyclone separator body, and a sealing cap is threaded to the outer surface of the overflow pipe and the gas phase outlet. The feed inlet is used to introduce multiphase fluid, and the gas phase outlet and the overflow pipe discharge gas and liquid respectively.

[0018] Compared with the prior art, the advantages of this invention are:

[0019] (1) This scheme effectively intercepts large solid impurities by using a honeycomb rectifier grid at the front end of the micro vortex channel, preventing them from directly entering the micro vortex channel and causing local blockage or wear. At the same time, it eliminates the phenomenon of uneven inlet turbulence and velocity distribution, avoiding the problem of centrifugal field instability caused by flow deviation.

[0020] (2) When the fluid passes through the honeycomb rectifier grid, it enters the conical opening of the micro vortex channel. Under the acceleration of the contraction section, the flow velocity is increased, and a high-intensity rotating flow field is generated along the guiding path formed by the micro spiral groove. Under the action of centrifugal force, the oil, gas, water and solid impurities are initially separated. The gas enters the airflow channel through the outlet pipe and achieves gas-liquid separation through the waterproof and breathable membrane in the outlet pipe. It also prolongs the residence time of the fluid in the micro vortex channel and enhances the sufficiency of separation.

[0021] (3) By arranging separation balls in series in the micro vortex channel and connecting them with elastic separation rods, micro-oscillation is generated under the action of fluid scouring, which promotes the collision and aggregation of fine droplets, thereby realizing passive enhanced separation based on fluid kinetic energy, significantly improving the clarity of the oil-water interface and separation efficiency.

[0022] (4) The separation balls arranged in a row simulate the passive stirring effect during the swinging process, which breaks the sedimentation equilibrium, prevents fine particles from adhering and accumulating on the channel wall, and significantly slows down the trend of channel cross-section shrinkage. At the same time, the fluid enters the internal cavity of the separation ball through the separation hole, comes into contact with the purification packing, and adsorbs colloidal substances, polar impurities and metal ions.

[0023] (5) At the same time, the motor is started to drive the cleaning plate to rotate. When the cleaning plate rotates to the top of the airflow channel, the piston plate is driven to move upward by the repulsive force of the electromagnet and the magnetic block, forming a negative pressure suction zone. The separated gas accumulated at the top of the adjacent micro vortex channel is actively sucked. During the negative pressure suction process, the piston plate moves up to compress the support spring and the elastic composite sleeve, so that the air outlet is folded and closed to maintain the cavity sealing. At the same time, the cleaning brush performs a flexible sweeping of the honeycomb rectifier grid to remove the attached sand particles and colloidal clumps. The impurities fall into the recycling box for centralized collection.

[0024] (6) After the gas is drawn in, it undergoes secondary gas-liquid separation through the waterproof and breathable membrane in the outlet pipe and enters the airflow channel. It flows through the suspended protrusion and oscillates slightly under the impact of the airflow, which drives the acid gas deep purification composite filler filled inside to continuously renew the exposed surface and enhance the adsorption capacity of acidic components such as hydrogen sulfide and carbon dioxide.

[0025] (7) Through the synchronous linkage mechanism of automatic cleaning component and gas export and purification component, the process of cleaning is to exhaust gas and exhaust gas is to purify gas. After purification, the gas is discharged from the gas phase outlet through waterproof and breathable membrane II and vent holes, thereby improving the fluid separation efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0028] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0029] Figure 4 For the present invention Figure 2 Enlarged view of the structure at point B;

[0030] Figure 5 This is a cross-sectional view of the integral porous honeycomb filter element of the present invention;

[0031] Figure 6 This is a partial structural cross-sectional view of the entire invention;

[0032] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point C;

[0033] Figure 8 This is a partial structural cross-sectional view of the purification and anti-deposition component of the present invention;

[0034] Figure 9 This is a partial structural cross-sectional view of the cyclone separation component of the present invention;

[0035] Figure 10 This is a partial structural cross-sectional view of the separation sphere of the present invention.

[0036] Explanation of the labels in the diagram:

[0037] 1. Hydrocyclone separator body; 101. Inlet; 102. Overflow pipe; 103. Gas phase outlet; 2. Hydrocyclone separation assembly; 201. Porous honeycomb filter element; 202. Conical inlet; 203. Micro-cyclone channel; 204. Micro-spiral groove; 205. Honeycomb rectifier grid; 206. Cyclone groove; 3. Purification and anti-deposition assembly; 301. Separation rod; 302. Separation ball; 303. Separation hole; 304. Waterproof and breathable membrane; 305. Purification packing; 306. Protective layer; 4. Automatic cleaning assembly; 401. Motor chamber; 402. 403. Motor; 404. Cleaning plate; 405. Cleaning brush; 406. Electromagnet; 407. Recycling bin; 508. Gas exhaust and purification assembly; 509. Airflow channel; 5000. Suspended protrusion; 5021. Support rod; 5022. Acid gas deep purification composite filler; 503. Piston plate; 504. Exhaust pipe; 505. Waterproof and breathable membrane II; 506. Vent hole; 507. Exhaust hole; 508. Magnetic block; 509. Support spring; 510. Elastic composite sleeve; 511. Support wire; 512. Composite ring; 513. Air outlet. Detailed Implementation

[0038] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1-10 A multiphase flow separation device for oil reservoir development with cyclone pre-separation includes a cyclone separator body 1, and a cyclone separation component 2 is installed inside the cyclone separator body 1.

[0040] Specifically, the cyclone separation component 2 includes a porous honeycomb filter element 201 installed inside the cyclone separator body 1. One end of the porous honeycomb filter element 201 has a cyclone groove 206. Multiple micro-cyclone channels 203 are formed inside the porous honeycomb filter element 201. A conical opening 202 is installed at the end of the micro-cyclone channel 203 near the cyclone groove 206. A honeycomb rectifier grid 205 is fixedly connected inside the conical opening 202. Multiple micro-spiral grooves 204 are formed inside the micro-cyclone channel 203. The porous honeycomb filter element 201 integrates the cyclone groove 206, the micro-cyclone channel 203, and the conical opening 202 through their mutual cooperation. This system achieves efficient pre-swirl and distribution of multiphase fluids. The honeycomb rectifier grid 205 performs initial screening and flow equalization of the fluid, intercepts large solid particles, and prevents centrifugal field instability caused by flow deviation. The micro-spiral groove 204 guides the fluid to enter tangentially, forming a high-intensity rotating flow field. Under the action of centrifugal force, the initial separation of oil, gas, water, and solid impurities is completed, improving separation efficiency and stability. The outer surface of the hydrocyclone body 1 is equipped with a feed inlet 101, and the upper surface of the hydrocyclone body 1 is connected to a gas phase outlet 103. An overflow pipe 102 is installed on the right side of the hydrocyclone body 1. The outer surfaces of the overflow pipe 102 and the gas phase outlet 103 are both threaded with sealing caps.

[0041] The cyclone separator 2 is internally equipped with a purification and anti-deposition component 3. The purification and anti-deposition component 3 includes a separation rod 301 fixedly connected to the bottom of the honeycomb rectifier grid 205. The separation rod 301 is made of elastic material to ensure that it can produce slight elastic deformation under the action of fluid scouring, causing the separation ball 302 connected to its outer surface to swing in a controllable manner. Multiple separation balls 302 are fixedly connected to the outer surface of the separation rod 301. Purification packing 305 is fixedly connected inside the separation ball 302. The purification packing 305 is composed of modified silica gel, hydrophobic polypropylene fiber and zeolite molecular sieve in a certain proportion. It has a high specific surface area and selective adsorption capacity, which effectively improves the separation efficiency and anti-pollution ability of the cyclone separator body 1 in the environment of high water content and high colloidal crude oil.

[0042] A protective layer 306 is fixedly connected to the outer surface of the separation ball 302. The protective layer 306 is made of polytetrafluoroethylene, fluororubber, or superhydrophobic coating material. The protective layer 306 can effectively prevent high-viscosity crude oil, asphalt, wax, and colloids from depositing and scaling on the surface of the separation ball 302, avoiding obstruction of swing or reduction of purification function due to impurity adhesion. At the same time, its smooth surface can reduce fluid flow resistance and maintain the free swing ability and long-term operational sensitivity of the separation ball 302 in complex multiphase flow environment. Multiple separation holes 303 are opened between the protective layer 306 and the purification packing 305. Under the action of fluid flushing, the separation ball 302 generates a slight swing through the separation rod 301, which breaks the stagnant zone near the wall, effectively preventing solid particles and colloids from depositing on the channel wall, significantly delaying the channel cross-section shrinkage trend, and realizing the self-anti-clogging function.

[0043] The cyclone separator 2 is internally equipped with a gas extraction and purification assembly 5. The gas extraction and purification assembly 5 includes an airflow channel 501 located inside the porous honeycomb filter element 201 and separated from the micro-cyclone channel 203. Multiple support rods 5021 are fixedly connected to the inner wall of the airflow channel 501. These support rods 5021 are made of elastic material, ensuring they can undergo slight elastic deformation under airflow impact or pressure fluctuations. This causes the suspended protrusions 502 to oscillate or vibrate slightly, effectively responding to airflow disturbances and allowing the suspended protrusions 502 to continuously change their posture during operation, promoting deep purification of acidic gases within the composite filler. The exposed surface of material 5022 is constantly renewed to prevent adsorption site saturation and improve the removal efficiency of acidic gases such as hydrogen sulfide and carbon dioxide. One end of the support rod 5021 is fixedly connected to a suspension protrusion 502. The interior of the suspension protrusion 502 is filled with acidic gas deep purification composite filler 5022. Multiple outlet holes 507 are opened on the outer surface of acidic gas deep purification composite filler 5022 and suspension protrusion 502. Through the acidic gas deep purification composite filler 5022, acidic gas components such as hydrogen sulfide and carbon dioxide released during the separation process can be efficiently adsorbed, avoiding direct emission of corrosive gases and causing environmental pollution.

[0044] Multiple waterproof and breathable membranes 505 are provided at the top of the airflow channel 501, and multiple vent holes 506 are provided at the bottom of the waterproof and breathable membranes 505. The waterproof and breathable membranes 505, together with the vent holes 506, enable the stable discharge of purified gas. A support wire 511 is fixedly connected to the bottom of the waterproof and breathable membranes 505. A piston plate 503 is fixedly connected to one end of the support wire 511. A magnetic block 508 is fixedly connected inside the piston plate 503. The magnetic block 508 and the electromagnet 405 are magnetically connected. When the electromagnet 405 is energized, it generates a repulsive force with the magnetic block 508, driving the piston plate 503 to move upward along the inner cavity of the airflow channel 501, forming a negative pressure suction zone, which actively extracts the separated gas accumulated at the top of the micro vortex channel 203 and prevents air blockage.

[0045] A support spring 509 is sleeved and connected to the outer surface of the support wire 511. A composite ring 512 is fixedly connected between the inner cavity sidewalls of the airflow channel 501. The composite ring 512 is made of high-strength engineering plastics such as polyetheretherketone or glass fiber reinforced nylon. An elastic composite sleeve 510 is fixedly connected between the lower surface of the composite ring 512 and the piston plate 503. The elastic composite sleeve 510 has multiple air outlets 513 inside. The elastic composite sleeve 510 is made of a composite elastic material with high elasticity, oil resistance, and aging resistance, such as fluororubber, silicone rubber, or thermoplastic polyurethane. When the piston plate 503 moves up and down, it achieves a retractable and sealed connection. When the piston plate 503 moves up and down and is compressed, the elastic composite sleeve 510 folds and contracts, and the internal air outlets 513 are squeezed and closed, maintaining the seal of the lower cavity and ensuring that the negative pressure is effectively established. When the piston plate 503 moves down and resets, the elastic composite sleeve 510 unfolds, and the air outlets 513 are exposed again, forming an exhaust channel to achieve directional gas discharge.

[0046] An outlet tube 504 is provided between the micro vortex channel 203 and the airflow channel 501. A waterproof and breathable membrane 304 is fixedly connected inside the outlet tube 504. Both the waterproof and breathable membrane 505 and the waterproof and breathable membrane 304 are made of hydrophobic and gas-loving materials such as polytetrafluoroethylene or expanded polytetrafluoroethylene, which allow gas molecules to pass through but block droplets and moisture from entering.

[0047] The cyclone separator 2 is equipped with an automatic cleaning component 4. The automatic cleaning component 4 includes a motor chamber 401 located within the porous honeycomb filter element 201. A motor 402 is fixedly connected inside the motor chamber 401. A cleaning plate 403 is fixedly connected to the output shaft of the motor 402. A cleaning brush 404 is fixedly connected to the bottom of the cleaning plate 403. The cleaning brush 404 is made of a flexible material, allowing it to effectively clean the surface of the honeycomb rectifier grid 205 without damaging it. Simultaneously, the flexible bristles can penetrate deep into the edge areas of the pores, improving cleaning coverage and ensuring unobstructed flow. An electromagnet is fixedly connected inside the cleaning plate 403. 405. The porous honeycomb filter element 201 and the cyclone separator body 1 have a recovery chamber inside, and a recovery box 406 is slidably connected inside the recovery chamber. The cleaning plate 403 is driven to rotate by the motor 402, which drives the cleaning brush 404 to sweep the honeycomb rectifier grid 205 to remove the attached sand, colloids and deposits. At the same time, the power supply and controller of the electromagnet 405 are activated. When it moves above the airflow channel 501, it drives the piston plate 503 to move upward to form a negative pressure to suck up the separated gas in the adjacent channel to prevent air blockage. The cleaned impurities are pushed to the recovery box 406 for centralized collection, thereby realizing the cleaning of the honeycomb rectifier grid 205 and the exhaust work at the same time.

[0048] Working principle: During use, the hydrocyclone separator body 1 is connected to an external power source via cables and sockets to ensure that the device is powered normally to maintain subsequent operation. Then, the extracted multiphase mixed fluid containing oil, water, gas and solid impurities is connected to the feed port 101 of the hydrocyclone separator body 1 through a conveying pipe to ensure that the fluid enters the hydrocyclone separator body 1 and flows into the porous honeycomb filter element 201 area inside it. The fluid first passes through the cyclone groove 206, and under the guidance of the flow, it forms an initial rotating flow state and is evenly distributed into multiple micro cyclone channels 203, and finally reaches the honeycomb rectifier grid 205 area at the top of each channel.

[0049] The honeycomb rectifier 205 performs preliminary solid-liquid separation on the multiphase fluid before it enters the micro vortex channel 203. When the fluid passes through the honeycomb rectifier 205, solid impurities can be intercepted to prevent them from directly entering the micro vortex channel 203 and causing local blockage or wear. At the same time, the regular channel structure of the honeycomb rectifier 205 plays a role in equalizing and stabilizing the flow, eliminating inlet turbulence and uneven velocity distribution, making the flow distribution in each micro vortex channel 203 more uniform, and avoiding the centrifugal field instability problem caused by flow deviation.

[0050] After the fluid passes through the honeycomb rectifier grid 205, it enters the conical opening 202 of the micro vortex channel 203. Under the acceleration of the contraction section, the flow velocity is increased, and a high-intensity rotating flow field is generated along the guiding path formed by the micro spiral groove 204. Under the action of centrifugal force, the oil, gas, water and solid impurities are initially separated. The heavy phase component migrates outward and adheres to the channel wall and moves downward, while the light liquid phase gathers towards the center and moves downward. The gas enters the airflow channel 501 through the outlet pipe 504 and achieves gas-liquid separation through the waterproof and breathable membrane 304 in the outlet pipe 504, forming a stable gas core structure. This prolongs the residence time of the fluid in the micro vortex channel 203 and enhances the adequacy of separation.

[0051] Subsequently, under the action of fluid scouring, the separation ball 302 oscillates slightly through the elastic separation rod 301, promoting droplet collision and aggregation, and disturbing the boundary layer to prevent impurities from depositing on the channel wall. At the same time, the fluid enters the internal cavity of the separation ball 302 through multiple separation holes 303 and comes into full contact with the purification packing 305 filled therein. The purification packing 305 can adsorb and remove polar impurities that affect the separation performance, thereby effectively improving the separation efficiency and anti-pollution ability of the cyclone separator body 1 in the environment of high water content and high colloidal crude oil.

[0052] Furthermore, the series of separation balls 302 simulate a passive stirring effect during the oscillation process, breaking the deposition equilibrium, preventing the adhesion and accumulation of fine particles, significantly delaying the shrinkage trend of the channel cross-section, improving the clarity of oil-water separation, inhibiting the deposition of impurities on the channel wall surface, and achieving self-anti-clogging function.

[0053] At the same time, the power supply and controller of the motor 402 and electromagnet 405 in the automatic cleaning component 4 are activated, so that the motor 402 drives the cleaning plate 403 to rotate through the coupling. When the cleaning plate 403 rotates, it drives the cleaning brush 404 to perform flexible brushing on the honeycomb rectifier grid 205 to remove the attached sand particles, clumps of adhesive and other deposits, thus achieving online self-cleaning. The cleaned impurities fall into the recycling bin 406 under the push of the cleaning brush 404, thus achieving centralized collection of impurities.

[0054] When the cleaning plate 403 moves above a certain airflow channel 501, the electromagnet 405 built into the cleaning plate 403 generates the same magnetic field as the magnetic block 508, forming a magnetic repulsion force. This drives the magnetic block 508 to move the piston plate 503 upward along the inner cavity of the airflow channel 501. As the piston plate 503 moves upward, the space between it and the top of the airflow channel 501 is gradually compressed, while the volume of the space below it (between the piston plate 503 and the bottom of the airflow channel 501) increases, resulting in a decrease in pressure in this area and the formation of a local negative pressure suction zone. This causes the separated gas in the adjacent micro vortex channel 203 to enter the airflow channel 501 through the outlet pipe 504, and gas-liquid separation is achieved through the waterproof and breathable membrane 304 in the outlet pipe 504, preventing oil from entering the airflow channel 501.

[0055] Furthermore, when the piston plate 503 moves, it squeezes the support wire 511 and the support spring 509, and compresses the elastic composite sleeve 510, causing the air outlet 513 inside the elastic composite sleeve 510 to fold and block, forming an internal seal and ensuring that the negative pressure effect is effectively established. When the gas enters the airflow channel 501, it flows through the suspended protrusion 502 suspended by the support wire 511. Under the impact of the airflow, the suspended protrusion 502 swings slightly and the gas is divided into multiple streams through the outlet hole 507 and enters the acid gas deep purification composite packing 5022, thereby adsorbing and purifying acidic components such as hydrogen sulfide and carbon dioxide in the gas.

[0056] Subsequently, the motor 402 drives the cleaning plate 403 to rotate above the next airflow channel 501, and its electromagnet 405 moves away from the previous airflow channel 501. The piston plate 503 moves downward through the elasticity of the support wire 511 and the support spring 509. When the piston plate 503 moves, it will unfold the elastic composite sleeve 510, exposing the air outlet 513. The purified gas passes through the waterproof and breathable membrane 505 and the air vent 506, floats above the porous honeycomb filter element 201, and is finally discharged from the device from the gas phase outlet 103 of the cyclone separator body 1.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A multiphase flow separation device for oil reservoir development with cyclone pre-separation, characterized in that: Includes a cyclone separator body (1), a cyclone separation component (2) installed inside the cyclone separator body (1), a purification and anti-deposition component (3) installed inside the cyclone separation component (2), and a gas outlet and purification component (5) installed inside the cyclone separation component (2). The cyclone separation assembly (2) includes a porous honeycomb filter element (201) installed inside the cyclone separator body (1). One end of the porous honeycomb filter element (201) is provided with a cyclone groove (206). Multiple micro cyclone channels (203) are provided inside the porous honeycomb filter element (201). A conical opening (202) is installed at one end of the micro cyclone channel (203) near the cyclone groove (206). A honeycomb rectifier grid (205) is fixedly connected inside the conical opening (202). The purification and anti-deposition component (3) includes a separation rod (301) fixedly connected to the bottom of the honeycomb rectifier grid (205). Multiple separation balls (302) are fixedly connected to the outer surface of the separation rod (301), and purification filler (305) is fixedly connected inside the separation balls (302). The gas export and purification component (5) includes an airflow channel (501) opened inside the porous honeycomb filter element (201) and separated from the micro vortex channel (203). Multiple support rods (5021) are fixedly connected to the inner wall of the airflow channel (501), and a suspended protrusion (502) is fixedly connected to one end of the support rod (5021).

2. The multiphase flow separation device for reservoir development with cyclone pre-separation according to claim 1, characterized in that: The interior of the micro vortex channel (203) is provided with multiple micro spiral grooves (204).

3. The multiphase flow separation device for reservoir development with cyclone pre-separation according to claim 1, characterized in that: A protective layer (306) is fixedly connected to the outer surface of the separation ball (302), and a plurality of separation holes (303) are provided between the protective layer (306) and the purification packing (305).

4. The multiphase flow separation device for oil reservoir development with cyclone pre-separation according to claim 1, characterized in that: The cyclone separation component (2) is equipped with an automatic cleaning component (4). The automatic cleaning component (4) includes a motor chamber (401) opened in the cavity of the porous honeycomb filter element (201). A motor (402) is fixedly connected inside the motor chamber (401). A cleaning plate (403) is fixedly connected to the output shaft end of the motor (402). A cleaning brush (404) is fixedly connected to the bottom of the cleaning plate (403). An electromagnet (405) is fixedly connected inside the cleaning plate (403).

5. The multiphase flow separation device for oil reservoir development with cyclone pre-separation according to claim 1, characterized in that: The porous honeycomb filter element (201) and the cyclone separator body (1) have a recovery chamber inside, and a recovery box (406) is slidably connected inside the recovery chamber.

6. A multiphase flow separation device for oil reservoir development with cyclone pre-separation as described in claim 4, characterized in that: The top of the airflow channel (501) is provided with multiple waterproof and breathable membranes (505), and the bottom of the waterproof and breathable membranes (505) is provided with multiple vent holes (506). The bottom of the waterproof and breathable membranes (505) is fixedly connected with a support wire (511). One end of the support wire (511) is fixedly connected with a piston plate (503). The piston plate (503) is fixedly connected with a magnetic block (508). The magnetic block (508) and the electromagnet (405) are magnetically connected. The outer surface of the support wire (511) is fitted with a support spring (509).

7. A multiphase flow separation device for reservoir development with cyclone pre-separation according to claim 6, characterized in that: A composite ring (512) is fixedly connected between the inner cavity sidewalls of the airflow channel (501), and an elastic composite sleeve (510) is fixedly connected between the lower surface of the composite ring (512) and the piston plate (503). The elastic composite sleeve (510) has multiple air outlet holes (513) inside.

8. The multiphase flow separation device for reservoir development with cyclone pre-separation according to claim 1, characterized in that: The interior of the suspended bump (502) is filled with acid gas deep purification composite filler (5022), and the outer surfaces of the acid gas deep purification composite filler (5022) and the suspended bump (502) are provided with multiple outlet holes (507).

9. A multiphase flow separation device for reservoir development with cyclone pre-separation according to claim 1, characterized in that: An outlet tube (504) is provided between the micro vortex channel (203) and the airflow channel (501), and a waterproof and breathable membrane (304) is fixedly connected inside the outlet tube (504).

10. A multiphase flow separation device for reservoir development with cyclone pre-separation according to claim 1, characterized in that: The outer surface of the cyclone separator body (1) is equipped with a feed inlet (101), the upper surface of the cyclone separator body (1) is connected to a gas phase outlet (103), an overflow pipe (102) is installed on the right side of the cyclone separator body (1), and the outer surfaces of the overflow pipe (102) and the gas phase outlet (103) are threaded with sealing caps.

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