Petroleum shaft paraffin scraping device

Abstract

The utility model discloses a petroleum shaft wax scraping device, and relates to the technical field of treatment of accumulated wax in an oil well pipeline. The petroleum shaft paraffin scraping device comprises a fixing column, first piston barrels are fixedly connected to the interior of the fixing column at equal intervals, and first piston rods are connected to the interiors of the first piston barrels in a sealed and sliding mode. By arranging the adjusting cavity, the sealing block and the like, by starting the electric telescopic rod, the sealing block can be driven to slide in the adjusting cavity, the scraping plate and the electric wheel can be driven to transversely move, the paraffin scraping device can adapt to paraffin scraping work under petroleum shafts with different calibers, and flexibility and adaptability are enhanced; and through sliding of a second piston rod, the opening and closing angle of an upper fixing block can be adjusted, through connection with a PE elastic plate, a breast board can abut against the inner walls of petroleum wellbores with different calibers, all scraped wax scraps can be collected in a collecting groove as much as possible, and practicability is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of wax accumulation treatment inside oil well pipelines, in particular to a wax scraping device for an oil wellbore. Background Art

[0002] Crude oil is traditionally referred to as unprocessed petroleum. It is a dark brown, viscous, oily liquid with a green fluorescence and a distinctive odor. It is a mixture of various liquid hydrocarbons, including alkanes, cycloalkanes, aromatics, and olefins. Crude oil can be refined into various products, providing fuel, raw materials, and chemical products for various sectors of the national economy. During the extraction process, wax deposition occurs in crude oil containing a certain amount of paraffin wax as temperature and pressure decrease and gas precipitates. This phenomenon reduces the inner diameter of the oil pipe, affecting well production capacity and, in severe cases, shutting down the well. Wax deposition begins at different locations in oil wells from different oil fields and reservoirs due to differences in crude oil properties, wax content, temperature and pressure, flow conditions, and pipe surface conditions. Wax deposition can clog the oil-producing strata, reducing well production while also increasing well load and causing production accidents.

[0003] When in use, the existing automatic wax scraping device for oil wells can only scrape wax from the inside of pipes of a specific diameter. If oil wells of different diameters are to be cleaned, the automatic wax scraping device for oil wells of corresponding specifications needs to be replaced. Therefore, multiple specifications of wax scraping devices need to be purchased for pipes of different diameters, which increases the equipment procurement and maintenance costs. Each replacement of equipment requires the operation of technicians, which increases labor costs and operational complexity. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an oil wellbore wax scraping device, which solves the problem that the existing automatic oil wellbore wax scraping device can only scrape wax inside pipes of a specific caliber when in use. If oil wellbores of different calibers are to be cleaned, it is necessary to replace the automatic oil wellbore wax scraping equipment of the corresponding specifications. Therefore, multiple specifications of wax scraping equipment must be purchased for pipes of different calibers, which increases the equipment procurement and maintenance costs. Each replacement of the equipment requires the operation of a technician, which increases the labor cost and operation complexity.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a petroleum wellbore wax scraping device, comprising a fixed column, the interior of the fixed column is equidistantly fixedly connected to a first piston cylinder, the interior of the first piston cylinder is sealingly and slidably connected to a first piston rod, an end of the first piston rod away from the fixed column is fixedly installed with an electric wheel, the inner center of the fixed column is fixedly connected to a support column, the top of the support column is sealingly and rotatably connected to a top seat, a bearing is fixedly installed at the connection between the support column and the top seat, the bottom of the top seat is fixedly connected to a gear ring, a drive motor is fixedly installed inside the support column, the output end of the drive motor is fixedly connected to a drive gear, the surface of the drive gear is meshedly connected to the surface of the gear ring, a connecting groove is provided in the interior of the top seat that is connected to the interior of the adjusting chamber, an adjusting chamber is provided in the interior of the support column, an electric telescopic rod is fixedly installed inside the fixed column, and the output end of the electric telescopic rod is fixedly connected to a sealing The top end of the second piston rod is fixedly connected to the second piston cylinder, and the outer surface of the third piston cylinder is sealingly connected to the third piston rod, and the end of the third piston cylinder is sealingly and slidingly connected to the third piston rod, and a scraper is fixedly installed on the end of the third piston rod away from the supporting column, and the interior of the third piston cylinder is connected with the internal top of the adjusting chamber through a connecting groove, and the interiors of the second piston cylinder and the first piston cylinder are both connected with the internal top of the adjusting chamber.

[0006] Preferably, the second piston rod, the first piston rod and the third piston rod are all square, and a lifting lug is fixedly connected to the top of the top seat.

[0007] Preferably, the end of the third piston cylinder away from the scraper is fixedly connected to the outer surface of the support column, the interior of the discharge pipe is connected to the interior of the collecting tank, and a solenoid valve is fixedly installed on the outer surface of the discharge pipe.

[0008] Preferably, a sealing ring is fixedly installed on the outer surface of the sealing block, and the outer surface of the sealing block is sealingly and slidingly connected to the inside of the adjustment cavity through the sealing ring, and the inner bottom end of the adjustment cavity is connected to the outside of the fixed column through a vent pipe.

[0009] Preferably, the number of the baffles is six, and a PE elastic plate is fixedly connected between every two of the baffles, and the surface of the PE elastic plate is provided with corrugated lines.

[0010] Preferably, the upper fixed block and the lower fixed block are both "U"-shaped, the end of the baffle extends to the interior of the collecting trough, the end of the baffle is movably connected to the interior of the collecting trough, and an electric heater is fixedly installed inside the scraper.

[0011] Beneficial effects

[0012] The utility model provides a wax scraping device for oil wells. Compared with the prior art, it has the following beneficial effects:

[0013] 1. The oil wellbore wax scraping device is provided with an adjustment chamber and a sealing block. By starting the electric telescopic rod, the sealing block can be driven to slide inside the adjustment chamber, and the scraper and the electric wheel can be driven to move laterally. It can adapt to the wax scraping work in oil wellbores of different diameters, thereby enhancing flexibility and adaptability.

[0014] 2. The oil wellbore wax scraping device can adjust the opening and closing angle of the upper fixed block by setting a baffle and a PE elastic plate, etc. through the sliding of the second piston rod, and can make the baffle rest against the inner wall of the oil wellbore through the connection with the PE elastic plate, so that the scraped wax scraps can be collected as much as possible inside the collection tank, thereby enhancing practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0018] Figure 4 This is a schematic diagram of the connection between the middle fence and the second piston cylinder of the utility model;

[0019] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0020] In the figure: 1. Fixed column; 2. First piston cylinder; 3. First piston rod; 4. Electric wheel; 5. Support column; 51. Top seat; 52. Bearing; 53. Gear ring; 54. Drive motor; 55. Drive gear; 56. Connecting groove; 6. Adjusting chamber; 7. Sealing block; 8. Electric telescopic rod; 9. Ventilation pipe; 10. Collecting tank; 101. Discharge pipe; 11. Lower fixed block; 12. Lower fixed plate; 13. Baffle; 14. Upper fixed block; 15. Second piston rod; 16. Second piston cylinder; 17. PE elastic plate; 18. Third piston cylinder; 19. Third piston rod; 20. Scraper; 21. Lifting ear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1-3 The utility model provides a technical solution: a petroleum wellbore wax scraping device, including a fixed column 1, a first piston cylinder 2 is fixedly connected to the interior of the fixed column 1 at equal distances, a first piston rod 3 is sealingly and slidingly connected to the interior of the first piston cylinder 2, an electric wheel 4 is fixedly installed on the end of the first piston rod 3 away from the fixed column 1, a support column 5 is fixedly connected to the center of the interior of the fixed column 1, a top of the support column 5 is sealingly and rotatably connected to a top seat 51, a bearing 52 is fixedly installed at the connection between the support column 5 and the top seat 51, a gear ring 53 is fixedly connected to the bottom of the top seat 51, a drive motor 54 is fixedly installed inside the support column 5, an output end of the drive motor 54 is fixedly connected to a drive gear 55, and the drive gear 5 5 is meshedly connected to the surface of the gear ring 53, and a connecting groove 56 is provided inside the top seat 51, which is connected to the inside of the adjustment chamber 6. The adjustment chamber 6 is provided inside the support column 5, and an electric telescopic rod 8 is fixedly installed inside the fixed column 1. The output end of the electric telescopic rod 8 is fixedly connected to a sealing block 7, and a sealing ring is fixedly installed on the outer surface of the sealing block 7. The outer surface of the sealing block 7 is sealed and slidably connected to the inside of the adjustment chamber 6 through the sealing ring. A vent pipe 9 is fixedly connected to the inside of the fixed column 1, and the inner bottom end of the adjustment chamber 6 is connected to the outside of the fixed column 1 through the vent pipe 9. The sliding of the sealing block 7 can increase the pressure inside the first piston cylinder 2, so that the electric wheel 4 can travel underground with different calibers;

[0024] Example 2

[0025] See also Figure 1 、 Figure 2 、 Figure 4 and Figure 5, a collecting tank 10 is provided on the upper surface of the fixed column 1, and a discharge pipe 101 is fixedly connected to the outer surface of the fixed column 1, and the interior of the discharge pipe 101 is connected to the interior of the collecting tank 10, and a solenoid valve is fixedly installed on the outer surface of the discharge pipe 101. The inner wall of the collecting tank 10 is equidistantly fixed with a lower fixed block 11, and the interior of the lower fixed block 11 is rotatably connected to a lower fixed plate 12, and the surface of the lower fixed plate 12 is fixedly connected with a baffle 13, and the end of the baffle 13 extends to the interior of the collecting tank 10, and the end of the baffle 13 is movably connected to the interior of the collecting tank 10, and both sides of the baffle 13 are fixedly connected with a PE elastic plate 17, and the top of the inner wall of the baffle 13 is fixedly connected with an upper fixed block 14, and the upper fixed block 14 and the lower fixed block 11 are both "U"-shaped, and the surface of the upper fixed block 14 is fixedly connected with a second piston rod 15, and the outer surface of the second piston rod 15 is sealed with a second piston cylinder 16. The outer surface of the fixed column 1 The top is fixedly connected to a third piston cylinder 18, and the interior of the third piston cylinder 18 is sealed and slidably connected to a third piston rod 19. The second piston rod 15, the first piston rod 3 and the third piston rod 19 are all square. A scraper 20 is fixedly installed on the end of the third piston rod 19 away from the support column 5, and an electric heater is fixedly installed on the inside of the scraper 20. The end of the third piston cylinder 18 away from the scraper 20 is fixedly connected to the outer surface of the support column 5. The interior of the third piston cylinder 18 is connected to the inner top of the adjusting chamber 6 through the connecting groove 56. The interiors of the second piston cylinder 16 and the first piston cylinder 2 are both connected to the inner top of the adjusting chamber 6. By setting the adjusting chamber 6 and the sealing block 7, etc., by starting the electric telescopic rod 8, the sealing block 7 can be driven to slide inside the adjusting chamber 6, which can drive the scraper 20 and the electric wheel 4 to move laterally, and can adapt to wax scraping work in oil wells of different calibers, thereby enhancing flexibility and adaptability.

[0026] Example 3

[0027] See also Figure 1 、 Figure 2 and Figure 5 The top of the top seat 51 is fixedly connected with a lifting ear 21, the number of the baffles 13 is six, and a PE elastic plate 17 is fixedly connected between every two baffles 13. The surface of the PE elastic plate 17 is provided with corrugated lines. By setting the baffles 13 and the PE elastic plate 17, etc., the opening and closing angle of the upper fixed block 14 can be adjusted by sliding the second piston rod 15, and the baffle 13 can be made to rest against the inner wall of the oil wellbore through the connection with the PE elastic plate 17, so that the scraped wax scraps can be collected as much as possible inside the collection tank 10, thereby enhancing practicality.

[0028] When in use, fix the rope to the lifting lug 21, then put the fixing column 1 into the oil wellbore, and start the electric telescopic rod 8, which drives the sealing block 7 to slide upward. At this time, the inside of the regulating chamber 6 is in a strong pressure state, and the inside of the first piston cylinder 2 is in a strong pressure state. The first piston rod 3 drives the electric wheel 4 to press against the inner wall of the oil wellbore. At the same time, the inside of the third piston cylinder 18 is also in a strong pressure state, and the third piston rod 19 drives the scraper 20 to press against the inside of the oil wellbore, and drives the drive gear 55 to rotate by starting the drive motor 54, and then passes The engagement of the overdrive gear 55 and the gear ring 53 drives the top seat 51 to rotate, so that the scraper 20 scrapes the inner wall of the oil wellbore. By adjusting the strong pressure inside the chamber 6, the inside of the second piston cylinder 16 is also under strong pressure. At this time, the sliding of the second piston rod 15 can adjust the opening and closing angle of the upper fixed block 14, and through the connection with the PE elastic plate 17, the baffle 13 can be pressed against the inner wall of the oil wellbore. The start of the electric wheel 4 drives the fixed column 1 to move, so that the scraped wax scraps can be collected as much as possible inside the collection tank 10, thereby enhancing practicality.

[0029] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A wax scraping device for a petroleum wellbore, comprising a fixed column (1), characterized in that: The interior of the fixed column (1) is equidistantly fixedly connected to a first piston cylinder (2), the interior of the first piston cylinder (2) is sealed and slidably connected to a first piston rod (3), an end of the first piston rod (3) away from the fixed column (1) is fixedly mounted with an electric wheel (4), the interior center of the fixed column (1) is fixedly connected to a support column (5), the top of the support column (5) is sealed and rotatably connected to a top seat (51), a bearing (52) is fixedly mounted at the connection between the support column (5) and the top seat (51), the bottom of the top seat (51) is fixedly connected to a gear ring (53), the interior of the support column (5) is fixedly mounted with a first piston cylinder (2), and the first piston cylinder (2) is sealed and slidably connected to a first piston rod (3), an electric wheel (4) is fixedly mounted on the end of the first piston rod (3) away from the fixed column (1), a support column (5) is fixedly mounted at the interior center of the fixed column (1), the top of the support column (5) is sealed and rotatably connected to a top seat (51), a bearing (52) is fixedly mounted at the connection between the support column (5) and the top seat (51), a gear ring (53) is fixedly mounted at the bottom of the top seat (51), and the interior of the support column (5) is fixedly mounted with a first piston cylinder (2). A driving motor (54) is fixedly installed, and the output end of the driving motor (54) is fixedly connected to a driving gear (55), and the surface of the driving gear (55) is meshed and connected to the surface of the gear ring (53). A connecting groove (56) communicating with the inside of the adjustment chamber (6) is provided inside the top seat (51), and an adjustment chamber (6) is provided inside the support column (5). An electric telescopic rod (8) is fixedly installed inside the fixed column (1), and the output end of the electric telescopic rod (8) is fixedly connected to a sealing block (7). A vent pipe (9) is fixedly connected inside the fixed column (1). The upper surface of the fixed column (1) is provided with a collecting trough (10), the outer surface of the fixed column (1) is fixedly connected to the discharge pipe (101), the inner wall of the collecting trough (10) is fixedly connected to the lower fixed block (11) at equal intervals, the inner part of the lower fixed block (11) is rotatably connected to the lower fixed plate (12), the surface of the lower fixed plate (12) is fixedly connected to the guardrail (13), both sides of the guardrail (13) are fixedly connected to the PE elastic plate (17), the top of the inner wall of the guardrail (13) is fixedly connected to the upper fixed block (14), the surface of the upper fixed block (14) is fixedly connected to the second piston rod (15 ), the outer surface of the second piston rod (15) is sealed and connected to the second piston cylinder (16), the outer surface top of the fixed column (1) is fixedly connected to the third piston cylinder (18), the inner sealing sliding connection of the third piston cylinder (18) is connected to the third piston rod (19), the end of the third piston rod (19) away from the support column (5) is fixedly installed with a scraper (20), the interior of the third piston cylinder (18) is connected to the inner top of the regulating chamber (6) through the connecting groove (56), and the interiors of the second piston cylinder (16) and the first piston cylinder (2) are both connected to the inner top of the regulating chamber (6).

2. The oil wellbore wax scraping device according to claim 1, characterized in that: The second piston rod (15), the first piston rod (3) and the third piston rod (19) are all square, and a lifting lug (21) is fixedly connected to the top of the top seat (51).

3. The oil wellbore wax scraping device according to claim 1, characterized in that: The end of the third piston cylinder (18) away from the scraper (20) is fixedly connected to the outer surface of the support column (5), the interior of the discharge pipe (101) is connected to the interior of the collecting tank (10), and a solenoid valve is fixedly installed on the outer surface of the discharge pipe (101).

4. The oil wellbore wax scraping device according to claim 1, characterized in that: A sealing ring is fixedly mounted on the outer surface of the sealing block (7), and the outer surface of the sealing block (7) is sealingly and slidingly connected to the interior of the regulating chamber (6) via the sealing ring. The inner bottom end of the regulating chamber (6) is connected to the exterior of the fixed column (1) via a vent pipe (9).

5. The oil wellbore wax scraping device according to claim 1, characterized in that: The number of the baffles (13) is six, and a PE elastic plate (17) is fixedly connected between every two of the baffles (13), and the surface of the PE elastic plate (17) is provided with corrugated lines.

6. The oil wellbore wax scraping device according to claim 1, characterized in that: The upper fixed block (14) and the lower fixed block (11) are both U-shaped, the end of the baffle (13) extends into the interior of the collecting trough (10), the end of the baffle (13) is movably connected to the interior of the collecting trough (10), and an electric heater is fixedly installed inside the scraper (20).

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