Oil-gas separator for combined standing type petroleum separation in oil field

Abstract

The invention discloses an oil-gas separator for combined standing type petroleum separation in an oil field. The oil-gas separator comprises a separator body, a separation channel and a pretreatment assembly. Vortex flow is formed through the spiral channel, the residence time of liquid in the device body is prolonged, and therefore the gravity separation effect is improved, after the liquid reaches the layering channel, the liquid is divided into the upper-layer oil channel and the lower-layer water channel through the layering plate to achieve flow division of the liquid, light oil is discharged through the liquid outlet pipe on the upper portion, and the oil separation effect is improved. Heavy water and impurities are discharged through a liquid outlet pipe on the lower portion, crude oil is subjected to heating pretreatment, crude oil viscosity is reduced, fluidity is improved, heated water is guided into a heat exchange pipe through a pump body, the process is repeated, the weight of a water tank is increased and reduced, the water tank reaches a T-shaped sliding block through the action of a reset spring, and the water tank slides up and down in a T-shaped sliding groove; while preheating work is completed, the water tank drives the lifting rod to move up and down, so that follow-up work of cleaning the filter plate is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of oil separation, and in particular to an oil-gas separator for oil field combined standing oil separation. Background Art

[0002] Oil separation refers to the process of separating various components in crude oil (such as oil, gas, water and impurities) from the mixture. This process is the first step in oil processing and directly affects the subsequent refining and utilization. The oil and gas separator is a device used to separate components such as oil, gas and water from the mixture. It is widely used in the oil, natural gas, chemical and other industries. The oil field joint standing oil separator is a device used for oil and gas separation and is widely used in oil extraction and processing.

[0003] The Chinese invention patent with authorization announcement number CN111927425A discloses a vertical oil-gas separator for petroleum separation, whose structure includes a sealing end cover, a body, an inlet, and an oil outlet. The sealing end cover is installed on the upper end of the body, and an inlet is provided on the left side of the body and an oil outlet is provided on the right side. The body is provided with a gas outlet, a pressure control valve, a mist collector, a buffer plate, an oil collecting tank, and a separation chamber. The gas outlet is equipped with a pressure control valve, and the interior of the separation chamber is provided with a mist collector, a buffer plate, and an oil collecting tank. The present invention cooperates with the connecting slide rail through the provided extrusion piece and the connecting block and the driving wheel. When the mixture is sprayed onto the bottom surface of the plate body to form an oil layer, the oil in the oil layer is scraped off from the bottom surface of the plate body by the extrusion piece under the same direction drive of the driving wheel, so as to prevent the formation of thick oil stains on the plate body and affect the buffering process of the plate body.

[0004] The Chinese invention patent with the authorization announcement number CN104713280A discloses a novel vertical oil-gas separator, in which the oil-gas mixture enters the oil separator through the elbow pipe and forms centrifugal separation in the elbow pipe. After the oil-gas mixture comes out of the elbow pipe, it forms collision separation with the horizontal cylinder wall. After the collision, the oil-gas mixture flows in the opposite direction, passes through a W-shaped baffle porous plate and a vertical porous plate, and some oil droplets are captured by the baffle porous plate and the vertical porous plate wall. The oil-gas mixture is filtered and separated through the filter at a uniform flow rate, thereby separating the remaining oil droplets. The oil droplets in the oil-gas mixture are separated by a multi-stage separation device, and the separation efficiency is not affected by the operating state of the unit. On the premise of meeting the separation efficiency when the unit is running at full load, the separation efficiency under other loads is also very good; the resistance loss of the oil-gas mixture after collision and separation by the filter is very small; the filling of lubricating oil is mainly located in the vertical cylinder section, which reduces the filling amount of lubricating oil.

[0005] The Chinese invention patent with the authorization announcement number CN112807862A discloses a high-precision oil-gas separator, including a vertical shell, an exhaust port and an oil discharge port respectively arranged at the top and bottom of the vertical shell, a mist collector arranged at the upper inner side of the vertical shell, an air inlet arranged at the upper part of the vertical shell, and a distribution head connected to the air inlet, characterized in that: a baffle assembly is arranged at the middle and lower part of the vertical shell, the baffle assembly is composed of a mounting bracket fixedly mounted on the side wall of the vertical shell, the mounting bracket is tightly attached to the side wall of the vertical shell, and a guide plate arranged at equal intervals on the inner side of the mounting bracket, the upper part of the guide plate is rotatably connected to the mounting bracket; a deflection drive mechanism for driving the deflection angle of the guide plate is arranged below the baffle assembly. The guide plate of the separator baffle assembly can adjust the deflection angle according to the internal air pressure, so as to ensure the force of the oil-gas mixture impacting the guide plate, and ensure the separation effect when the gas transmission volume is large.

[0006] The conventional oil-gas separator in the above patent may have reduced efficiency when processing high viscosity or multiphase fluids, affecting its processing capacity, and the crude oil cannot be pretreated before oil-gas separation, affecting the separation efficiency of the oil-gas separator. Summary of the invention

[0007] The purpose of the present invention is to provide an oil-gas separator for oil field combined standing petroleum separation, which solves the problem that the efficiency of conventional oil-gas separators may decrease when processing high viscosity or multiphase fluids, affecting their processing capacity, and the crude oil cannot be pretreated before oil-gas separation, affecting the separation efficiency of the oil-gas separator.

[0008] The present invention solves the above technical problems through the following technical solutions, which include: A body, one side of which is provided with an oil inlet pipe, and the other side of which is provided with an air outlet pipe and two liquid outlet pipes; A separation channel, the separation channel is installed inside the body, and the separation channel is used to achieve separation of multiphase fluid; A pretreatment component, the pretreatment component is installed on the top of the oil inlet pipe, and the pretreatment component is used to pretreat the crude oil; The pretreatment component comprises a filter box fixedly mounted on the top of the oil inlet pipe, a preheating box mounted on the top of the filter box, a heat exchange structure mounted inside the preheating box and a filter structure mounted inside the filter box.

[0009] Preferably, the heat exchange structure includes a serpentine oil delivery pipe installed inside the preheating box, a heat exchange pipe arranged around the outside of the serpentine oil delivery pipe, and a water circulation component installed on the back side of the preheating box.

[0010] Preferably, a T-shaped slide groove is provided on the back side of the preheating box, and a T-shaped slider is slidably connected inside the T-shaped slide groove. The water circulation component includes a water tank fixedly welded to one side of the T-shaped slider, a heating box fixedly mounted on the back side of the preheating box, a pump body installed on the back side of the preheating box by bolts, and a return spring welded between the water tank and the top of the filter box.

[0011] Preferably, both ends of the pump body are connected to the water tank through a hose and are connected to the water inlet end of the heat exchange tube through a pipe, the heating box is connected to the water tank through a hose and is connected to the water outlet end of the heat exchange tube through a pipe, an oil inlet hopper is installed on the top of the serpentine oil pipe, and the bottom of the serpentine oil pipe is connected to the filter box.

[0012] Preferably, the filtering structure comprises a filter plate installed inside the filter box and a cleaning piece installed on the top of the filter plate, and a solid discharge pipe is installed on one side of the filter box.

[0013] Preferably, a guide hole is provided on the top of the filter box, a guide groove is provided on one side of the top of the filter plate, and the cleaning component includes a sliding block slidably connected to the top of the guide groove through a guide slider, a cleaning plate fixedly welded on one side of the sliding block, a cleaning pad installed at the bottom of the cleaning plate, and a first hinged seat fixedly welded on the top of the sliding block.

[0014] Preferably, the cleaning part also includes a lifting rod fixedly welded to the top of the water tank, a lifting column fixedly welded to the bottom of the lifting rod, a second hinged seat fixedly welded to the bottom of the lifting column, and a hinged plate installed between the first hinged seat and the second hinged seat.

[0015] Preferably, the separation channel comprises a spiral channel installed inside the body and a layered channel installed on one side of the spiral channel.

[0016] Preferably, a stratification plate is installed on the stratification channel, and the stratification channel is divided into an upper oil channel and a lower water channel by the stratification plate.

[0017] Preferably, one end of the top of the spiral channel is connected to the oil inlet pipe, and the oil channel and the water channel in the stratified channel are respectively connected to the two liquid outlet pipes.

[0018] Compared with the prior art, the beneficial effects of the present invention are: The spiral channel forms a vortex flow, which increases the retention time of the liquid inside the device, thereby improving the gravity separation effect. When the liquid reaches the stratification channel, it is divided into the upper oil channel and the lower water channel through the stratification plate to achieve liquid diversion. The lighter oil is discharged through the upper liquid outlet pipe, the heavier water and impurities are discharged through the lower liquid outlet pipe, and the gas is collected through the gas outlet pipe.

[0019] When crude oil is transported in the serpentine oil pipeline, it exchanges heat with the hot water in the heat exchange tube, pre-treating the crude oil by heating, reducing the viscosity of the crude oil, and improving its fluidity, which helps the crude oil flow more smoothly when entering the separator and enhances the subsequent separation effect. The water after heat exchange enters the heating box, and is heated by the heating structure in the heating box, such as the heating plate, and the heated water enters the water tank. The heated water is introduced into the heat exchange tube through the pump body, and this cycle repeats. In the process of hot water entering and exiting the water tank, the weight of the water tank increases and decreases. The water tank reaches the T-shaped slider through the action of the reset spring and slides up and down in the T-shaped slide groove. While completing the preheating work, the water tank drives the lifting rod to move up and down, which is convenient for the subsequent cleaning of the filter plate.

[0020] Filter through the filter plate to remove solid impurities, avoid impurities affecting the subsequent separation efficiency, remove particles that may cause poor flow, ensure that the crude oil has good fluidity before entering the separator, avoid incomplete phase separation caused by solid impurities, and improve the separation effect. Solid impurities are discharged through the solid discharge pipe, and the staff can collect and reprocess them. The lifting rod drives the lifting column to move up and down, and the lifting column drives the second articulated seat to move up and down. The second articulated seat drives the first articulated seat to move through the articulated plate, and the first articulated seat drives the sliding block to move. The sliding block moves up and down along the filter plate under the action of the guide slider, and the sliding block drives the cleaning plate to move. The cleaning plate drives the cleaning pad to move to clean the solid particles on the top of the filter plate to avoid clogging the filter net and improve the pretreatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A schematic diagram of a three-dimensional structure from another viewing angle in the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the separation channel and the pretreatment component in the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the heat exchange structure in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the heat exchange structure in the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the filtering structure in the present invention; Figure 7 For the present invention Figure 6 A in the figure is an enlarged schematic diagram of the three-dimensional structure.

[0022] The numbers in the figure represent: body; Oil inlet pipe; Exhaust pipe; Liquid outlet pipe; Separation channel; 501, spiral channel; 502, layered channel; Pretreatment components; 601, filter box; 602, preheating box; 603, heat exchange structure; 6031, serpentine oil pipeline; 6032, heat exchange pipe; 6033, water circulation parts; 604, filter structure; 6041, filter plate; 6042, cleaning parts; T-shaped slider; 8. water tank; 9. heating box; 10. pump body; 11. return spring; 12. hose; 13. oil inlet hopper; 14. solid discharge pipe; 15. guide groove; 16. sliding block; 17. cleaning plate; 18. cleaning pad; 19. first articulated seat; 20. lifting rod; 21. lifting column; 22. second articulated seat; 23. articulated plate; 24. layered plate. DETAILED DESCRIPTION

[0023] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0024] An oil-gas separator for oil field combined standing oil separation, such as Figure 1-7 As shown, it includes a body 1, a separation channel 5 and a pre-treatment component 6; An oil inlet pipe 2 is installed on one side of the body 1, and an air outlet pipe 3 and two liquid outlet pipes 4 are installed on the other side of the body 1; The separation channel 5 is installed inside the body 1, and the separation channel 5 is used to achieve the separation of multiphase fluid.

[0025] Furthermore, the separation channel 5 includes a spiral channel 501 installed inside the body 1 and a stratified channel 502 installed on one side of the spiral channel 501, a stratified plate 24 is installed on the stratified channel 502, and the stratified channel 502 is divided into an upper oil channel and a lower water channel by the stratified plate 24. The top end of the spiral channel 501 is connected to the oil inlet pipe 2, and the oil channel and the water channel in the stratified channel 502 are respectively connected to the two liquid outlet pipes 4.

[0026] like Figure 1-7 As shown, the pretreatment component 6 is installed on the top of the oil inlet pipe 2, and the pretreatment component 6 is used to pretreat the crude oil.

[0027] The pretreatment assembly 6 includes a filter box 601 fixedly mounted on the top of the oil inlet pipe 2 , a preheating box 602 mounted on the top of the filter box 601 , a heat exchange structure 603 mounted inside the preheating box 602 , and a filter structure 604 mounted inside the filter box 601 .

[0028] Furthermore, the heat exchange structure 603 includes a serpentine oil delivery pipe 6031 installed inside the preheating box 602 , a heat exchange pipe 6032 arranged around the outside of the serpentine oil delivery pipe 6031 , and a water circulation member 6033 installed on the back side of the preheating box 602 .

[0029] Furthermore, a T-shaped slide groove is provided on the back side of the preheating box 602, and a T-shaped slider 7 is slidably connected inside the T-shaped slide groove. The water circulation component 6033 includes a water tank 8 fixedly welded to one side of the T-shaped slider 7, a heating box 9 fixedly mounted on the back side of the preheating box 602, a pump body 10 installed on the back side of the preheating box 602 by bolts, and a return spring 11 welded between the water tank 8 and the top of the filter box 601.

[0030] Furthermore, both ends of the pump body 10 are connected to the water tank 8 through a hose 12 and are connected to the water inlet end of the heat exchange tube 6032 through a pipeline. The heating box 9 is connected to the water tank 8 through a hose 12 and is connected to the water outlet end of the heat exchange tube 6032 through a pipeline. An oil inlet hopper 13 is installed on the top of the serpentine oil pipe 6031, and the bottom of the serpentine oil pipe 6031 is connected to the filter box 601.

[0031] Furthermore, the filtering structure 604 includes a filtering plate 6041 installed inside the filtering box 601 and a cleaning member 6042 installed on the top of the filtering plate 6041 . A solid discharge pipe 14 is installed on one side of the filtering box 601 .

[0032] Furthermore, a guide hole is opened at the top of the filter box 601, a guide groove 15 is opened on one side of the top of the filter plate 6041, and the cleaning piece 6042 includes a sliding block 16 slidably connected to the top of the guide groove 15 through a guide slider, a cleaning plate 17 fixedly welded to one side of the sliding block 16, a cleaning pad 18 installed at the bottom of the cleaning plate 17 and a first hinged seat 19 fixedly welded to the top of the sliding block 16.

[0033] Furthermore, the cleaning part 6042 also includes a lifting rod 20 fixedly welded on the top of the water tank 8, a lifting column 21 fixedly welded on the bottom of the lifting rod 20, a second hinged seat 22 fixedly welded on the bottom of the lifting column 21, and a hinged plate 23 installed between the first hinged seat 19 and the second hinged seat 22. The lifting rod 20 drives the lifting column 21 to move up and down, the lifting column 21 drives the second hinged seat 22 to move up and down, the second hinged seat 22 drives the first hinged seat 19 to move through the hinged plate 23, the first hinged seat 19 drives the sliding block 16 to move, the sliding block 16 moves up and down along the filter plate 6041 under the action of the guide slider, the sliding block 16 drives the cleaning plate 17 to move, the cleaning plate 17 drives the cleaning pad 18 to move, the solid particles on the top of the filter plate 6041 are cleaned to avoid clogging the filter screen, improve the pretreatment effect, and complete the preheating work while completing the work of cleaning the filter plate 6041 through the lifting rod 20.

[0034] Working principle: when in use, crude oil is introduced into the oil inlet hopper 13, and the crude oil enters the filter box 601 through the serpentine oil pipeline 6031. When the crude oil is transported in the serpentine oil pipeline 6031, it exchanges heat with the hot water in the heat exchange tube 6032, and pre-treats the crude oil by heating, reduces the viscosity of the crude oil, and improves the fluidity, which helps the crude oil flow more smoothly when entering the separator, and enhances the subsequent separation effect. The water after heat exchange enters the heating box 9, and the heated water is heated by the heating structure in the heating box 9, such as the heating plate, and the heated water enters the water tank 8. The heated water is introduced into the heat exchange tube 6032 through the pump body 10, and so on. In the process of the hot water entering and exiting the water tank 8, the weight of the water tank 8 increases and decreases. The water tank 8 reaches the T-shaped slider 7 through the action of the reset spring 11 and slides up and down in the T-shaped slide groove, and the water tank 8 drives the lifting rod 20 to move up and down; The preheated crude oil is filtered through the filter plate 6041 to remove solid impurities, avoid impurities affecting the subsequent separation efficiency, remove particles that may cause poor flow, ensure that the crude oil has good fluidity before entering the separator, avoid solid impurities causing incomplete phase separation, and improve the separation effect. The solid impurities are discharged through the solid discharge pipe 14, and the staff can collect and reprocess them. The lifting rod 20 drives the lifting column 21 to move up and down, and the lifting column 21 drives the second hinge seat 22 to move up and down. The second hinge seat 22 drives the first hinge seat 19 to move through the hinge plate 23. The first hinge seat 19 drives the sliding block 16 to move. The sliding block 16 moves up and down along the filter plate 6041 under the action of the guide slider. The sliding block 16 drives the cleaning plate 17 to move, and the cleaning plate 17 drives the cleaning pad 18 to move, and the solid particles on the top of the filter plate 6041 are cleaned to avoid clogging the filter screen and improve the pretreatment effect. The treated crude oil enters the body 1 and moves along the spiral channel 501. Under the action of gravity, liquids with higher density, such as water and oil, will sink, and gases will rise. The temperature will affect the density and viscosity of the fluid, which can be controlled by the temperature regulating structure inside the body 1. The temperature regulating structure is a prior art. The gas is collected through the gas outlet pipe 3, and the water and oil will then move downward. During the movement, the heavier water and impurities sink to the bottom, and the lighter oil floats on the surface, forming a vortex flow through the spiral channel 501, thereby increasing the residence time of the liquid inside the body 1, thereby enhancing the gravity separation effect. When the liquid reaches the stratification channel 502, it is divided into an upper oil channel and a lower water channel through the stratification plate 24 to realize the diversion of the liquid. The lighter oil is discharged through the upper liquid outlet pipe 4, and the heavier water and impurities are discharged through the lower liquid outlet pipe 4.

[0035] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims, but all of them will fall within the scope of protection of the present invention.

Claims

1. An oil-gas separator for oil field joint standing oil separation, characterized in that: include: A body (1), wherein one side of the body (1) is provided with an oil inlet pipe (2), and the other side of the body (1) is provided with an air outlet pipe (3) and two liquid outlet pipes (4); A separation channel (5), the separation channel (5) being installed inside the body (1), the separation channel (5) being used to achieve separation of multiphase fluid; A pretreatment component (6), the pretreatment component (6) being installed on the top of the oil inlet pipe (2), and the pretreatment component (6) being used to pretreat the crude oil; The pretreatment assembly (6) comprises a filter box (601) fixedly mounted on the top of the oil inlet pipe (2), a preheating box (602) mounted on the top of the filter box (601), a heat exchange structure (603) mounted inside the preheating box (602), and a filter structure (604) mounted inside the filter box (601).

2. The oil-gas separator for oil field combined standing oil separation as claimed in claim 1, characterized in that: The heat exchange structure (603) comprises a serpentine oil delivery pipe (6031) installed inside the preheating box (602), a heat exchange pipe (6032) arranged around the outside of the serpentine oil delivery pipe (6031), and a water circulation component (6033) installed on the back side of the preheating box (602).

3. The oil-gas separator for oil field combined standing oil separation as claimed in claim 2, characterized in that: A T-shaped slide groove is provided on the back side of the preheating box (602), and a T-shaped slider (7) is slidably connected inside the T-shaped slide groove. The water circulation component (6033) comprises a water tank (8) fixedly welded to one side of the T-shaped slider (7), a heating box (9) fixedly mounted on the back side of the preheating box (602), a pump body (10) mounted on the back side of the preheating box (602) by bolts, and a return spring (11) welded between the water tank (8) and the top of the filter box (601).

4. The oil-gas separator for oil field combined standing oil separation as claimed in claim 3, characterized in that: Both ends of the pump body (10) are connected to the water tank (8) through a hose (12) and are connected to the water inlet end of the heat exchange tube (6032) through a pipeline. The heating box (9) is connected to the water tank (8) through a hose (12) and is connected to the water outlet end of the heat exchange tube (6032) through a pipeline. An oil inlet hopper (13) is installed at the top of the serpentine oil delivery pipe (6031), and the bottom of the serpentine oil delivery pipe (6031) is connected to the filter box (601).

5. The oil-gas separator for oil field combined standing oil separation as claimed in claim 3, characterized in that: The filtering structure (604) comprises a filtering plate (6041) installed inside the filtering box (601) and a cleaning member (6042) installed on the top of the filtering plate (6041). A solid discharge pipe (14) is installed on one side of the filtering box (601).

6. The oil-gas separator for oil field combined standing oil separation as claimed in claim 5, characterized in that: A guide hole is provided at the top of the filter box (601), a guide groove (15) is provided at one side of the top of the filter plate (6041), and the cleaning member (6042) comprises a sliding block (16) slidably connected to the top of the guide groove (15) via a guide slider, a cleaning plate (17) fixedly welded to one side of the sliding block (16), a cleaning pad (18) mounted at the bottom of the cleaning plate (17), and a first hinge seat (19) fixedly welded to the top of the sliding block (16).

7. The oil-gas separator for oil field combined standing oil separation as claimed in claim 6, characterized in that: The cleaning member (6042) further comprises a lifting rod (20) fixedly welded to the top of the water tank (8), a lifting column (21) fixedly welded to the bottom of the lifting rod (20), a second hinged seat (22) fixedly welded to the bottom of the lifting column (21), and a hinged plate (23) installed between the first hinged seat (19) and the second hinged seat (22).

8. The oil-gas separator for oil field combined standing oil separation as claimed in claim 1, characterized in that: The separation channel (5) comprises a spiral channel (501) installed inside the body (1) and a layered channel (502) installed on one side of the spiral channel (501).

9. The oil-gas separator for oil field combined standing oil separation as claimed in claim 8, characterized in that: A stratification plate (24) is installed on the stratification channel (502), and the stratification channel (502) is divided into an upper oil channel and a lower water channel by the stratification plate (24).

10. The oil-gas separator for oil field combined standing oil separation as claimed in claim 9, characterized in that: One end of the top of the spiral channel (501) is connected to the oil inlet pipe (2), and the oil channel and the water channel in the layered channel (502) are respectively connected to the two liquid outlet pipes (4).

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