An oil filtration device used in oil and gas development

Abstract

This invention belongs to the field of natural gas filtration technology, specifically an oil filtration device for oil and gas extraction. It includes a guide pipe, a booster pump at the top of the guide pipe, an air inlet pipe at the bottom of the guide pipe, and a tail filter at the bottom end of the guide pipe. An oil filter mechanism is located between the air inlet pipe and the guide pipe, and the air inlet pipe is connected to the oil filter mechanism. An oil storage tank is connected to one side of the oil filter mechanism. Through the operation of the oil filter mechanism, the natural gas is agitated, causing it to rotate circumferentially within the mechanism. This increases the contact time and probability between the oil filter mechanism and the natural gas, and also increases the probability of aggregation between oil impurity particles. Consequently, oil impurities in the natural gas adhere to the oil filter mechanism and ultimately enter the oil storage tank, improving the filtration effect. This allows for better oil filtration even with increased gas supply rates.

Description

Technical Field

[0001] This invention belongs to the field of natural gas filtration technology, and specifically relates to an oil filtration device used in oil and gas extraction. Background Technology

[0002] When extracting oil and gas, it is necessary to separate oil and natural gas into liquid and gas products. Oil and natural gas have become essential energy sources for daily life and industrial production. However, since a small amount of oil remains in the natural gas after liquid-gas separation, if the oil residue cannot be removed during pipeline transportation, it can easily cause pipeline blockage. Therefore, it is necessary to filter the oil from the separated natural gas to obtain pure natural gas for pipeline transportation.

[0003] When filtering petroleum impurities from natural gas, multiple oil-absorbing components are installed at the pipeline inlet to adhere the petroleum impurities. During the implementation of this method, the natural gas is introduced slowly to ensure that it can fully contact the oil-absorbing components, resulting in a long filtration time.

[0004] Therefore, it is necessary to invent an oil filtration device for oil and gas extraction to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an oil filtration device for oil and gas extraction, thereby resolving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an oil filtration device for oil and gas extraction, comprising a guide pipe, a booster pump at the top of the guide pipe, an air inlet pipe at the bottom of the guide pipe, a tail filter at the bottom end of the guide pipe, an oil filter mechanism between the air inlet pipe and the guide pipe, the air inlet pipe being connected to the oil filter mechanism, and an oil storage tank being connected to one side of the oil filter mechanism.

[0007] Preferably, the oil filter mechanism includes a filter cylinder with a horizontally arranged cylindrical surface. A motor is installed at the rear end of the filter cylinder, and a guide shaft is installed at the end of the output shaft of the motor. Multiple guide grooves are provided on the guide shaft, and filter blades are provided on the surface of the guide shaft between two adjacent guide grooves. A connecting rod is hinged to the surface of the filter blades, and a tail filter screen is installed at the connection between the top of the filter cylinder and the guide pipe.

[0008] Preferably, a sliding rod is inserted into the end of the connecting rod, a scraper is provided at the end of the sliding rod, the filter blade is recessed on the side near the front of the rotation direction, a mounting frame is provided on the inner side of the filter blade, and a sliding groove is provided on the inner side of the filter blade to slide with the mounting frame so that the mounting frame is close to or away from the guide shaft. An oil suction element and an oil suction strip located on the surface of the oil suction element are provided on the mounting frame.

[0009] Preferably, both the oil-absorbing element and the oil-absorbing strip are oil-absorbing felts. The number of oil-absorbing strips is set to multiple and they are distributed at intervals on the surface of the oil-absorbing strips. The maximum distance between the oil-absorbing strip and the oil-absorbing element gradually increases towards the direction of the guide shaft, and the end of the oil-absorbing strip away from the oil-absorbing element bends towards the direction of the guide shaft.

[0010] Preferably, a groove is provided on the cylindrical sidewall of the filter cartridge, and a matching plug is provided at the groove. The plug and the groove are located on the lower semi-cylindrical surface of the filter cartridge, and within the range of 290-330 degrees in the fourth quadrant of the coordinate system with the front end of the filter cartridge as the plug. The plug and the filter cartridge are connected by bolts.

[0011] Preferably, an L-shaped plate is fixedly connected to the surface of the filter cartridge, and the surface of the L-shaped plate has a receiving groove that matches the sealing plug.

[0012] Preferably, the L-shaped plate has a roller on its surface, the roller penetrates the L-shaped plate, and when the mounting bracket slides on the surface of the L-shaped plate, the mounting bracket will rotate the roller by friction.

[0013] Preferably, an oil outlet pipe is connected between the oil filter mechanism and the oil storage tank, and both ends of the oil outlet pipe are connected to the oil filter mechanism and the oil storage tank respectively by bolts.

[0014] The technical effects and advantages of this invention are as follows:

[0015] 1. The present invention utilizes an oil filter mechanism to agitate the natural gas, causing it to rotate circumferentially within the oil filter mechanism. This increases the contact time and probability between the oil filter mechanism and the natural gas, as well as the probability of aggregation between petroleum impurity particles. Consequently, petroleum impurities in the natural gas adhere to the oil filter mechanism and eventually enter the oil storage tank, improving the filtration effect. Furthermore, it can better achieve petroleum filtration even when the gas supply rate is increased.

[0016] 2. This invention utilizes the pushing action of the scraper on the oil suction strip and the gravity of the mounting frame itself to quickly move the oil suction component and the oil suction strip, thereby rapidly adhering petroleum impurities in natural gas and improving the removal efficiency of petroleum impurities. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of the oil filtration device used in the oil and gas extraction of the present invention;

[0019] Figure 2 This is a front sectional view of the filter cartridge in this invention (in the state of counterclockwise rotation);

[0020] Figure 3 This is a schematic diagram showing the state of the bottommost filter blade and scraper relative to the guide shaft during operation in this invention.

[0021] Figure 4 In this invention Figure 3 A schematic diagram of one of the angles.

[0022] In the diagram: 1. Guide pipe; 2. Booster pump; 3. Air inlet pipe; 4. Oil filter mechanism; 41. Filter cartridge; 42. Motor; 43. Guide shaft; 44. Guide groove; 45. Filter blade; 46. Connecting rod; 5. Oil storage tank; 6. Sliding rod; 7. Scraper; 8. Mounting bracket; 9. Oil suction component; 10. Oil suction strip; 11. Sealing plug; 12. L-shaped plate; 13. Receiving groove; 14. Roller; 15. Oil outlet pipe. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] This invention provides, for example Figure 1-4 The oil filtration device shown includes a guide pipe 1, a booster pump 2 is provided at the top of the guide pipe 1, an air inlet pipe 3 is provided at the bottom of the guide pipe 1, a tail filter screen is provided at the bottom end of the guide pipe (1), an oil filter mechanism 4 is provided between the air inlet pipe 3 and the guide pipe 1, the air inlet pipe 3 is connected to the oil filter mechanism 4, and an oil storage tank 5 is connected to one side of the oil filter mechanism 4.

[0026] Natural gas containing petroleum impurities enters the oil filter mechanism 4 through the bottom inlet pipe 3. The oil filter mechanism 4 agitates the natural gas, causing it to rotate circumferentially within the mechanism. This increases the contact time and probability between the oil filter mechanism 4 and the natural gas, as well as the probability of petroleum impurity particles agglomerating. Consequently, the petroleum impurities adhere to the oil filter mechanism 4 and eventually enter the oil storage tank 5, improving the filtration effect. This also allows for better petroleum filtration while increasing the gas supply rate. The petroleum-filtered natural gas then passes through the top guide pipe 1 and reaches the booster pump 2. After being pressurized by the booster pump 2, the natural gas pressure is maintained at a high level in subsequent gas delivery pipelines, facilitating subsequent gas delivery.

[0027] Refer to the instruction manual appendix Figure 1-4 The oil filtration mechanism 4 includes a filter cylinder 41 with a horizontally arranged cylindrical surface. A motor 42 is installed at the rear end of the filter cylinder 41. A guide shaft 43 is installed at the end of the output shaft of the motor 42. The two ends of the guide shaft 43 pass through the front and rear side walls of the filter cylinder 41, respectively. Multiple guide grooves 44 are provided on the guide shaft 43. One end of the guide groove 44 passes through the guide shaft 43 and is close to the oil storage tank 5. The other end does not pass through the guide shaft 43 and is connected to the output shaft of the motor 42 to prevent oil from flowing to the motor 41. Filter blades 45 are provided on the surface of the guide shaft 43 between two adjacent guide grooves 44. A connecting rod 46 is hinged to the surface of the filter blades 45. The tail filter screen is installed at the connection between the top of the filter cylinder 41 and the guide pipe 1.

[0028] When the oil filter mechanism 4 is working, the motor 42 drives the guide shaft 43 and the filter blades 45 to rotate. Natural gas entering between two adjacent filter blades 45 rotates, pushing the natural gas to rotate, thus ensuring that petroleum impurities on the surface of the natural gas come into full contact with the filter blades 45. This increases the gas supply rate and also improves oil filtration. Furthermore, because the connecting rod 46 is hinged to the surface of the filter blades 45, the free end of the connecting rod 46 is constantly positioned between the two adjacent filter blades 45 as the filter blades 45 rotate. The contact range between the connecting rod 46 and the natural gas is constantly changing, which increases the probability of contact with petroleum impurities in the natural gas. This allows the petroleum impurities to adhere better to the connecting rod 46 and eventually flow along the filter blades 45 to the guide channel 44 and into the oil storage tank 5, achieving a better petroleum filtration effect. Furthermore, the tail filter can further enhance the filtration effect, filtering out any unfiltered petroleum. The filter blades 45 also quickly move the petroleum filtered out of the tail filter and cause it to fall off, preventing excessive petroleum residue from clogging the tail filter.

[0029] Refer to the instruction manual appendix Figure 2-4The connecting rod 46 has a sliding rod 6 inserted at its end, and a scraper 7 is provided at the end of the sliding rod 6. The filter blade 45 is recessed on the side closest to the front in the direction of rotation. A mounting bracket 8 is provided on the inner side of the filter blade 45, and a sliding groove is provided on the inner side of the filter blade 45 to slide with the mounting bracket 8, so that the mounting bracket 8 can move closer to or away from the guide shaft 43. An oil-absorbing element 9 and an oil-absorbing strip 10 located on the surface of the oil-absorbing element 9 are provided on the mounting bracket 8. The oil-absorbing element 9 and the oil-absorbing strip 10 are both oil-absorbing felts, and the oil-absorbing felts can follow the filter blades. When rotating at 45, it better absorbs petroleum impurities in natural gas. The number of oil suction strips 10 is set to multiple and distributed at intervals on the surface of the oil suction strips 10. The maximum distance between the oil suction strips 10 and the oil suction member 9 gradually increases towards the direction closer to the guide shaft 43. The end of the oil suction strip 10 away from the oil suction member 9 bends towards the direction closer to the guide shaft 43. Before the oil suction member 9 reaches the top vertical direction, the oil that has been absorbed by the oil suction strip 10 can be guided along the curved surface of the oil suction member 9, so that the petroleum impurities fall into the guide groove 44.

[0030] When the filter blade 45 is at its bottom, the connecting rod 46 is completely in contact with the surface of the filter blade 45, and the sliding rod 6 is inserted to its maximum depth into the connecting rod 46. The scraper 7 is in contact with the bottom of the inner wall of the filter cylinder 41. When the filter blade 45 is in its bottom vertical position and continues to rotate with the guide shaft 43, the scraper 7 drives the sliding rod 6 to gradually move out of the connecting rod 46. When the scraper 7 separates from the filter blade 45 that is hinged to it and gradually contacts another adjacent filter blade 45, and when this adjacent filter blade 45 rotates to a horizontal position... When the filter blade 7 continues to rotate upward and is in an inclined state, the pushing action of the scraper 7 on the oil suction strip 10 and the gravity of the mounting frame 8 itself can quickly drive the oil suction component 9 and the oil suction strip 10 to move. At the same time, it can quickly adhere to the petroleum impurities in the natural gas, improving the removal efficiency of petroleum impurities. When the mounting frame 8 quickly impacts the filter blade 45 near the guide shaft 43, the oil suction strip 10 deforms, and the petroleum adhering to the surface of the oil suction strip 10 is more quickly carried away from the surface of the oil suction strip 10 by inertia, and finally enters the guide groove 44 and is guided into the oil storage tank 5.

[0031] Refer to the instruction manual appendix Figure 1-2 The filter cartridge 41 has a slot on its cylindrical sidewall, which extends through the sidewall of the filter cartridge 41. A matching plug 11 is provided at the slot. The plug 11 and the slot are located on the lower semi-cylindrical surface of the filter cartridge 41, within the range of 200-250 degrees in the third quadrant of the coordinate system, with the front end of the filter cartridge 41 as the reference point. The plug 11 and the filter cartridge 41 are connected by bolts.

[0032] When the oil suction component 9 needs to be replaced, the bolts can be loosened to allow the plug 11 to fall off. Since the plug 11 and the slot are located on the lower semi-cylindrical surface of the filter cartridge 41, and within the range of 290-330 degrees in the fourth quadrant of the coordinate system on the front circular surface of the filter cartridge 41, when the filter blade 45 is aligned with the slot, the filter blade 45 is in a downward angled state. Therefore, the mounting bracket 8 can quickly slide out from the slot along the filter blade 45, making it convenient to replace it quickly.

[0033] Refer to the instruction manual appendix Figure 1 An L-shaped plate 12 is fixedly connected to the surface of the filter cartridge 41, and the surface of the L-shaped plate 12 is provided with a receiving groove 13 that matches the sealing plug 11.

[0034] The plug 11 removed from the slot can be placed in the receiving slot 13 for easy subsequent installation. The mounting bracket 8 that slides out from the slot can slide down along the L-shaped plate 12 and be blocked by the bend of the L-shaped plate 12, thus blocking the fast-sliding mounting bracket 8.

[0035] Refer to the instruction manual appendix Figure 1 The L-shaped plate 12 is provided with a roller 14, which passes through the L-shaped plate 12. When the mounting frame 8 slides on the surface of the L-shaped plate 12, the mounting frame 8 will rotate the roller 14 by friction.

[0036] The roller 14 can reduce the friction between the mounting bracket 8 and the L-shaped plate 12, thereby reducing the wear of the mounting bracket 8 and the L-shaped plate 12 and improving their service life.

[0037] Refer to the instruction manual appendix Figure 1 An oil outlet pipe 15 is connected between the oil filter mechanism 4 and the oil storage tank 5. Both ends of the oil outlet pipe 15 are connected to the oil filter mechanism 4 and the oil storage tank 5 respectively by bolts.

[0038] The oil outlet pipe 15 can guide the oil impurities that adhere to the filter to the oil storage tank 5, extending the distance between the oil storage tank 5 and the oil filter mechanism 4, so that the filtered oil impurities are fully separated from the natural gas.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil filtration device for oil and gas extraction, comprising a guide pipe (1), a booster pump (2) disposed at the top of the guide pipe (1), an air inlet pipe (3) disposed at the bottom of the guide pipe (1), and a tail filter screen disposed at the bottom end of the guide pipe (1), characterized in that: An oil filter mechanism (4) is provided between the air intake pipe (3) and the guide pipe (1). The air intake pipe (3) is connected to the oil filter mechanism (4). An oil storage tank (5) is connected to one side of the oil filter mechanism (4). The oil filter mechanism (4) includes a filter cylinder (41) with a horizontally arranged cylindrical surface. A motor (42) is located at the rear end of the filter cylinder (41). A guide shaft (43) is installed at the end of the output shaft of the motor (42). The two ends of the guide shaft (43) pass through the front and rear side walls of the filter cylinder (41) respectively. Multiple guide grooves (44) are provided on the guide shaft (43). One end of the guide groove (44) passes through the guide shaft (43) and is close to the oil tank (5), while the other end does not pass through the guide shaft (43). This end is connected to the output shaft of the motor (42). Two adjacent guide grooves (44) The guide shaft (43) between the two is provided with filter blades (45) on its surface, and a connecting rod (46) is hinged to the surface of the filter blade (45); a sliding rod (6) is inserted into the end of the connecting rod (46), and a scraper (7) is provided at the end of the sliding rod (6). The side of the filter blade (45) near the front side of the rotation direction is recessed. A mounting bracket (8) is provided on the inner side of the filter blade (45). A sliding groove is provided on the inner side of the filter blade (45) to slide with the mounting bracket (8) so that the mounting bracket (8) is close to or away from the guide shaft (43). An oil suction element (9) and a positioning element are provided on the mounting bracket (8). When the oil-absorbing strip (10) on the surface of the oil-absorbing component (9) and the filter blade (45) are at the bottom, the connecting rod (46) is completely attached to the surface of the filter blade (45), and the scraper (7) is in contact with the bottom of the inner wall of the filter cylinder (41). When the filter blade (45) is in the vertical state at the bottom and continues to rotate with the rotation of the guide shaft (43), the scraper (7) drives the sliding rod (6) to gradually move out of the connecting rod (46). When the scraper (7) is separated from the filter blade (45) that is hinged to it and gradually comes into contact with another adjacent filter blade (45), when this When the adjacent filter blades (45) rotate to a horizontal state and continue to rotate upward and are in an inclined state, the pushing action of the scraper (7) on the oil suction strip (10) and the gravity of the mounting frame (8) can quickly drive the oil suction component (9) and the oil suction strip (10) to move. When the mounting frame (8) quickly hits the filter blade (45) near the guide shaft (43), the oil suction strip (10) deforms, and the oil adhering to the surface of the oil suction strip (10) is carried away from the surface of the oil suction strip (10) by inertia and finally enters the guide groove (44) and is guided into the oil storage tank (5). The oil-absorbing element (9) and the oil-absorbing strip (10) are both oil-absorbing felts. The number of oil-absorbing strips (10) is set to multiple and they are distributed at intervals on the surface of the oil-absorbing strips (10). The maximum distance between the oil-absorbing strip (10) and the oil-absorbing element (9) gradually increases towards the direction of the guide shaft (43). The end of the oil-absorbing strip (10) away from the oil-absorbing element (9) bends towards the direction of the guide shaft (43).

2. The oil filtration device for oil and gas extraction according to claim 1, characterized in that: A slot is provided on the cylindrical side wall of the filter cylinder (41), and a matching plug (11) is provided at the slot. The plug (11) and the slot are located on the lower semi-cylindrical surface of the filter cylinder (41), and within the range of 290 to 330 degrees in the fourth quadrant of the coordinate system of the front end circular surface of the filter cylinder (41). The plug (11) and the filter cylinder (41) are connected by bolts.

3. The oil filtration device used in oil and gas extraction according to claim 2, characterized in that: The filter cartridge (41) is fixedly connected to an L-shaped plate (12), and the surface of the L-shaped plate (12) is provided with a receiving groove (13) that matches the plug (11).

4. The oil filtration device used in oil and gas extraction according to claim 3, characterized in that: The L-shaped plate (12) is provided with a roller (14) that passes through the L-shaped plate (12). When the mounting bracket (8) slides on the surface of the L-shaped plate (12), the mounting bracket (8) will rotate the roller (14) by friction.

5. The oil filtration device for oil and gas extraction according to claim 1, characterized in that: An oil outlet pipe (15) is connected between the oil filter mechanism (4) and the oil storage tank (5). Both ends of the oil outlet pipe (15) are connected to the oil filter mechanism (4) and the oil storage tank (5) respectively by bolts.

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