Descaling tool for oil well

Abstract

The utility model relates to the technical field of oil exploitation, and discloses a descaling tool for an oil well, which comprises a base, a portal frame fixedly connected to the upper surface of the base, a lifting plate slidably connected to the inner side of the portal frame, a driving motor mounted on the lower surface of the lifting plate, a driving gear connected to an output shaft of the driving motor, and a driven gear meshed with the driving gear. The center of the driven gear is fixedly connected with a sleeve, and the bottom end of the sleeve is in threaded connection with a rotating rod. According to the utility model, by combining hot water softening and mechanical scraping, water in the water tank is firstly heated through the heating pipe, the hot water is sprayed out from the spray head through the pipeline to soften a scale layer on the pipe wall of the oil well, and meanwhile, the spray rod is driven to rotate by water flow impact, so that the scale layer is fully contacted with the hot water; and then the driving motor drives the scraper and the fan-shaped scraping blade to rotate, the fan-shaped scraping blade preliminarily crushes and loosens the scale layer, the scraper performs fine cleaning, thorough descaling is ensured, and the descaling quality is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil exploitation technical field, concretely is a scale removing tool for oil well. BACKGROUND

[0002] In the oil exploitation process, with the increase of exploitation time, the oil well pipe column can gradually accumulate various scales, such as calcium carbonate scale, calcium sulfate scale, iron oxide scale and scale layer formed by mixing other impurities. The existence of these scales seriously affects the normal production of oil well. Therefore, scale removing tool is needed to remove the scale of oil well pipe column.

[0003] The existing scale removing method has many drawbacks. For example, although the chemical scale removing method can dissolve the scale to some extent, it can cause corrosion to the oil well equipment, shorten the service life of the equipment, and the use of chemical agents may also cause environmental pollution problems. Some tools in mechanical scale removing method, such as traditional scrapers, have problems such as incomplete scale removal and complex operation, which are difficult to meet the efficient and comprehensive scale removal demand. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a scale removing tool for oil well, which has the advantages of being able to quickly remove various scales on the oil well pipe wall and solves the above technical problems.

[0006] (II) Technical scheme

[0007] In order to achieve the above purpose, the utility model provides the following technical scheme: a scale removing tool for oil well, comprising a base, the upper surface of the base is fixedly connected with a gantry, the inner side of the gantry is slidably connected with a lifting plate, the lower surface of the lifting plate is installed with a driving motor, the output shaft of the driving motor is connected with a driving gear, the driving gear is connected with a driven gear, the center of the driven gear is fixedly connected with a sleeve, the bottom end of the sleeve is threadedly connected with a rotating rod, the bottom end of the rotating rod is threadedly connected with a scale removing assembly, the top end of the sleeve is rotatably connected with a water pipe joint, the top end of the water pipe joint is fixedly connected with a hose, one end of the hose is connected with a water pump, the suction end of the water pump is connected with a water suction pipe, the top surface of the base is installed with a water tank.

[0008] The scale removing assembly comprises a cylinder one, the outer surface of the cylinder one is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with a scraper, the bottom end of the cylinder one is fixedly connected with a cylinder two, the outer surface of the cylinder two is fixedly connected with a fan-shaped scraper, the bottom end of the cylinder two is embedded in a bearing, the inside of the bearing is rotatably connected with a spray head rod, the bottom end of the spray head rod is threadedly connected with a spray head, the bottom end of the cylinder two is connected with a bottom cover through a screw.

[0009] Preferably, the gantry top surface is provided with two groups of hydraulic rods, the bottom ends of the two groups of hydraulic rods are connected with a lifting plate, and the lifting plate is rotationally connected with a sleeve.

[0010] Preferably, the water tank is internally provided with a heating pipe, and the water tank internally extends into the water suction pipe.

[0011] Preferably, a sealing ring is arranged between the bottom cover and the cylinder II, the spray head comprises three spray rods, and a plurality of fine holes are formed in the outer surface of the spray rod.

[0012] Preferably, a plurality of fan-shaped scrapers are arranged around the axial direction of the cylinder II, and a saw groove is formed in the edge of the fan-shaped scraper.

[0013] Preferably, the bottom surface of the base is provided with a U-shaped opening, the rotating rods are hollow rods, and a plurality of rotating rods are threadedly connected.

[0014] Compared with the prior art, the oil well descaling tool has the following beneficial effects:

[0015] The oil well descaling tool has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic view of the structure of the utility model;

[0017] Figure 2 It is a three-dimensional schematic view of the structure of the utility model Figure 1 It is a three-dimensional schematic view of the structure of the utility model

[0018] Figure 3 It is a three-dimensional schematic view of the structure of the utility model

[0019] Figure 4 It is an exploded view of the descaling assembly of the utility model.

[0020] Wherein: 1, base; 2, portal frame; 3, lifting plate; 4, drive motor; 5, driving gear; 6, driven gear; 7, sleeve; 8, rotating rod; 9, descaling assembly; 91, cylinder one; 92, connecting rod; 93, scraper; 94, cylinder two; 95, fan-shaped scraper; 96, bearing; 97, spray rod; 98, spray head; 99, bottom cover; 910, spray rod; 10, water pipe joint; 11, hose; 12, water pump; 13, water suction pipe; 14, water tank; 15, hydraulic rod; 16, heating pipe; 17, sealing ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-4 A descaling tool for oil well, including base 1, the upper surface of base 1 is fixedly connected with portal frame 2, the inner side of portal frame 2 is slidably connected with lifting plate 3, the lower surface of lifting plate 3 is installed with drive motor 4, the output shaft of drive motor 4 is connected with driving gear 5, driving gear 5 is meshingly connected with driven gear 6, the center of driven gear 6 is fixedly connected with sleeve 7, the bottom end of sleeve 7 is threadedly connected with rotating rod 8, the bottom end of rotating rod 8 is threadedly connected with descaling assembly 9, the top end of sleeve 7 is rotatably connected with water pipe joint 10, the top end of water pipe joint 10 is fixedly connected with hose 11, one end of hose 11 is connected with water pump 12, the suction end of water pump 12 is connected with water suction pipe 13, the top surface of base 1 is installed with water tank 14;

[0023] Descale assembly 9 includes cylinder one 91, the outer surface of cylinder one 91 is fixedly connected with connecting rod 92, one end of connecting rod 92 is fixedly connected with scraper 93, the bottom end of cylinder one 91 is fixedly connected with cylinder two 94, the outer surface of cylinder two 94 is fixedly connected with fan-shaped scraper 95, the bottom end of cylinder two 94 is embedded in bearing 96, the inside of bearing 96 is rotatably connected with spray rod 97, the bottom end of spray rod 97 is threadedly connected with spray head 98, the bottom end of cylinder two 94 is connected with bottom cover 99 through screw.

[0024] Specifically, the top surface of portal frame 2 is installed with two groups of hydraulic rods 15, the bottom end of two groups of hydraulic rods 15 is connected with lifting plate 3, the inside of lifting plate 3 is rotatably connected with sleeve 7.

[0025] Specifically, the inside of water tank 14 is installed with heating pipe 16, and the inside of water tank 14 extends into water suction pipe 13.

[0026] The advantage is that, by moving the base 1 to the oil well, then connecting the cylinder 91 at the top of the descaling assembly 9 with a rotating rod 8, then connecting the rotating rod 8 with the sleeve 7, and then driving the lifting plate 3 to descend by starting the two hydraulic rods 15, the lifting plate 3 drives the rotating rod 8 and the descaling assembly 9 to extend into the oil well, when a rotating rod 8 is completely immersed in the oil well, the rotating rod 8 is disconnected from the sleeve 7, and then the rotating rod 8 is connected with a new rotating rod 8, so that the new rotating rod 8 is connected with the sleeve 7, and the rotating rod 8 is lowered again by using the hydraulic rod 15, so that the number of rotating rods 8 is increased by repeating the above steps, so that the descaling assembly 9 can continuously penetrate into the oil well.

[0027] Specifically, a sealing ring 17 is arranged between the bottom cover 99 and the cylinder two 94, and the spray head 98 includes three spray rods 910, and the outer surface of the spray rod 910 is provided with a plurality of fine holes.

[0028] Specifically, the fan-shaped scraper 95 is arranged around the axis of the cylinder two 94, and the edge of the fan-shaped scraper 95 is provided with a saw slot.

[0029] The advantage is that, before descaling, a large amount of clean water is poured into the water tank 14, and then the heating pipe 16 is started to heat the water, and then the water pump 12 is started to draw the hot water in the water tank 14 into the hose 11 through the water suction pipe 13, and then the hot water enters the sleeve 7 through the water pipe joint 10, and then the hot water enters the rotating rod 8, the cylinder one 91, the cylinder two 94, the spray head rod 97 and the spray head 98 in turn, and finally the hot water is sprayed out from the fine holes on the outer surface of the three spray rods 910, so that the sprayed hot water can soften the scale layer on the wall of the oil well, and the spray rod 910 can be rotated under the action of water flow, so that the scale layer on the wall of the oil well can be fully contacted with the hot water.

[0030] Specifically, the bottom surface of the base 1 is provided with a U-shaped opening, the rotating rod 8 is a hollow rod, and a plurality of rotating rods 8 are arranged and threadedly connected.

[0031] The advantages are that while the hot water softens the scale layer on the inner wall of the oil well pipe, the driving motor 4 is started to drive the driving gear 5 to rotate, the driving gear 5 drives the driven gear 6 to rotate, the driven gear 6 drives the sleeve 7 to rotate, the sleeve 7 drives the rotating rod 8 to rotate, and the rotating rod 8 drives the cylinder one 91 and the cylinder two 94 to rotate, so that the scraper 93 and the fan-shaped scraper 95 rotate, since the fan-shaped scraper 95 is below the scraper 93, the fan-shaped scraper 95 can contact the scale layer first, the fan-shaped scraper 95 can preliminarily break and loosen the scale layer, the saw grooves at the edge of the fan-shaped scraper 95 can increase the roughness after contacting the scale layer, so that grooves are formed on the scale layer to break the scale layer, and the scraper 93 finely cleans the remaining scale.

[0032] In use, first, the base 1 is moved to the oil well, the cylinder one 91 at the top of the scale-removing assembly 9 is connected with a rotating rod 8, the rotating rod 8 is connected with the sleeve 7, the two hydraulic rods 15 are started to drive the lifting plate 3 to descend, the rotating rod 8 and the scale-removing assembly 9 are inserted into the oil well, when the rotating rod 8 is completely immersed in the oil well, the rotating rod 8 is separated from the sleeve 7, the new rotating rod 8 is connected with the sleeve 7, the hydraulic rod 15 is started to drive the new rotating rod 8 to descend, the number of the rotating rod 8 is increased, and the scale-removing assembly 9 is continuously inserted into the oil well, before scale removal, a large amount of clean water is poured into the water tank 14, the heating pipe 16 is started to heat the water, then the water pump 12 is started to cooperate with the water suction pipe 13 to draw the hot water in the water tank 14 into the hose 11, the hot water enters the sleeve 7 through the water pipe joint 10, and then enters the rotating rod 8, the cylinder one 91, the cylinder two 94, the nozzle rod 97 and the nozzle 98 in sequence, and finally is sprayed out from the surface holes of the nozzle 910 to soften the scale layer, and the water flow drives the nozzle 910 to rotate, so that the scale layer is fully contacted with the hot water, while the hot water softens the scale layer, the driving motor 4 is started to drive the driving gear 5 to rotate, and then drives the driven gear 6, the sleeve 7 and the rotating rod 8 to rotate, the rotating rod 8 drives the cylinder one 91 and the cylinder two 94 to rotate, so that the scraper 93 and the fan-shaped scraper 95 rotate, the fan-shaped scraper 95 preliminarily breaks and loosens the scale layer, the edge saw grooves increase the roughness after contacting the scale layer to break the scale layer, and then the scraper 93 finely cleans the remaining scale.

[0033] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A scale removal tool for use in oil wells comprising a base (1) characterised in that: The upper surface of the base (1) is fixedly connected with a portal frame (2), the inner side of the portal frame (2) is slidably connected with a lifting plate (3), the lower surface of the lifting plate (3) is provided with a driving motor (4), the output shaft of the driving motor (4) is connected with a driving gear (5), the driving gear (5) is meshingly connected with a driven gear (6), the center of the driven gear (6) is fixedly connected with a sleeve (7), the bottom end of the sleeve (7) is threadedly connected with a rotating rod (8), the bottom end of the rotating rod (8) is threadedly connected with a descaling assembly (9), the top end of the sleeve (7) is rotatably connected with a water pipe joint (10), the top end of the water pipe joint (10) is fixedly connected with a hose (11), one end of the hose (11) is connected with a water pump (12), the suction end of the water pump (12) is connected with a water suction pipe (13), and the top surface of the base (1) is provided with a water tank (14). The descaling assembly (9) comprises a cylinder (91), the outer surface of the cylinder (91) is fixedly connected with a connecting rod (92), one end of the connecting rod (92) is fixedly connected with a scraper (93), the bottom end of the cylinder (91) is fixedly connected with a cylinder (94), the outer surface of the cylinder (94) is fixedly connected with a fan-shaped scraper (95), the bottom end of the cylinder (94) is embedded in a bearing (96), the inside of the bearing (96) is rotatably connected with a spray head rod (97), the bottom end of the spray head rod (97) is threadedly connected with a spray head (98), and the bottom end of the cylinder (94) is screw-connected with a bottom cover (99).

2. A clean-out tool for use in oil wells as claimed in claim 1 wherein: The top surface of the portal frame (2) is provided with two groups of hydraulic rods (15), the bottom ends of the two groups of hydraulic rods (15) are connected with the lifting plate (3), and the inside of the lifting plate (3) is rotatably connected with the sleeve (7).

3. The clean-out tool of claim 1, wherein: The inside of the water tank (14) is provided with a heating pipe (16), and the inside of the water tank (14) extends into the water suction pipe (13).

4. The clean-out tool of claim 1, wherein: A sealing ring (17) is arranged between the bottom cover (99) and the cylinder (94), the spray head (98) comprises three spray rods (910), and the outer surface of the spray rod (910) is provided with a plurality of fine holes.

5. The scale removal tool for oil wells according to claim 1, characterized in that: The fan-shaped scrapers (95) are arranged in the axial direction of the cylinder (94) in an array, and saw grooves are formed at the edges of the fan-shaped scrapers (95).

6. The clean-out tool of claim 1, wherein: The bottom surface of the base (1) is provided with a U-shaped opening, the rotating rod (8) is a hollow rod, and a plurality of rotating rods (8) are arranged and threadedly connected.

Images