Casing pipe inner wall cleaning device

Abstract

The utility model discloses a sleeve inner wall cleaning device which comprises a rack, a plurality of supporting frames used for supporting a to-be-cleaned sleeve are arranged on the rack, and meanwhile a traction module is further arranged on the rack; the cleaning device further comprises a cleaning plug, and one end of the cleaning plug is connected with the traction module. The cleaning plug is provided with a plurality of high-pressure nozzles aligned with the inner wall of the to-be-cleaned sleeve; the cleaning plug is further provided with a water conveying pipe used for conveying high-pressure cleaning water, the high-pressure spray heads are communicated with the water conveying pipe, meanwhile, the cleaning plug is further provided with a plurality of scraping plates, the scraping plates are connected with the cleaning plug, and the edges of the scraping plates are tightly attached to the inner wall of the sleeve to be cleaned. Compared with the prior art, the device has the advantages that the high-pressure spray head penetrates into the casing pipe to achieve rapid spray cleaning and decontamination, meanwhile, secondary scraping is conducted on the inner wall of the casing pipe through the cleaning plug, stubborn attachments on the inner wall of the casing pipe are further removed, meanwhile, sewage is rapidly discharged out of the casing pipe, and the cleaning efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of oil production equipment, and in particular to a casing inner wall cleaning device. Background Art

[0002] Casing is a component widely used in the field of oil drilling. During the working process, a large amount of oil will adhere to the inner wall, which seriously affects the transportation of various fluids. Therefore, the casing needs to be cleaned regularly to achieve the secondary use of the casing. In the prior art, the inner wall of the casing is generally cleaned by manual flushing. However, since the length of the casing is generally more than 6 meters, not only is the cleaning effect on the inner wall of the middle part of the casing poor, but its cleaning efficiency is also low. Utility Model Content

[0003] The main purpose of the present application is to provide a casing inner wall cleaning device, aiming to solve the defect of low cleaning efficiency in the prior art.

[0004] This application achieves the above objectives through the following technical solutions:

[0005] A casing inner wall cleaning device comprises a frame, on which a plurality of support frames for supporting the casing to be cleaned are arranged;

[0006] A traction module, wherein the traction module is arranged on the frame;

[0007] A cleaning plug, one end of which is connected to the traction module; the cleaning plug is provided with a plurality of high-pressure nozzles aimed at the inner wall of the casing to be cleaned; the cleaning plug is also provided with a water pipe for conveying high-pressure cleaning water, and each of the high-pressure nozzles is connected to the water pipe respectively;

[0008] A plurality of scrapers are arranged in sequence along the axial direction of the cleaning plug, each of the scrapers is connected to the cleaning plug, and the edge of each scraper is tightly fitted to the inner wall of the sleeve to be cleaned.

[0009] Optionally, the support frame includes a support rod and a limiting ring, the limiting ring is in a semicircular structure; a fastening ring is hinged on the limiting ring, and a connecting screw is provided between the limiting ring and the fastening ring.

[0010] Optionally, the traction module includes a traction cable and a winch, the traction cable is connected to the winch; the cleaning plug is connected to the traction cable via a traction hook.

[0011] Optionally, the cleaning plug includes a shell, the water pipe is arranged on the shell, one end of the water pipe is connected to an external high-pressure water source; a plurality of water branch pipes are connected in parallel to the outlet end of the water pipe, and each of the water branch pipes is respectively connected to a corresponding high-pressure nozzle.

[0012] Optionally, a water distribution tray is further provided in the shell, one end of the water distribution tray is connected to the water pipe thread, and the other end thereof is provided with a plurality of water outlets, each of the water outlets is respectively connected to the water branch pipe thread.

[0013] Optionally, both ends of the shell are connected to sealing plates via flange plates, and the water pipe and each of the water branch pipes are respectively connected to the two sealing plates.

[0014] Optionally, a connecting ring adapted to the traction hook is further provided on the sealing plate at the front end of the shell; and a plurality of reinforcing ribs are also provided on the inner side of the sealing plate.

[0015] Optionally, a retaining ring is provided on the shell, and a plurality of scrapers are sequentially provided on the shell along the axial direction of the shell, the retaining ring is abutted against the scraper, and an isolation ring is also provided between any two adjacent scrapers; the outer diameter of each scraper is larger than the outer diameter of the isolation ring, and each scraper is tightly fitted against the inner wall of the casing to be cleaned.

[0016] Optionally, along the moving direction of the cleaning plug, a guide surface with a conical structure is provided on the front side of each scraper; and the isolation ring arranged on the outermost side is interference connected with the shell.

[0017] Optionally, the scraper includes a supporting core in an annular structure, and a surface of the supporting core is wrapped with a rubber scraping layer.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] The present application includes a frame, on which a plurality of support frames for supporting the sleeve to be cleaned are arranged, and a traction module is also arranged on the frame; the cleaning device also includes a cleaning plug, one end of which is connected to the traction module; the cleaning plug is provided with a plurality of high-pressure nozzles aimed at the inner wall of the sleeve to be cleaned; the cleaning plug is also provided with a water pipe for conveying high-pressure cleaning water, each of the high-pressure nozzles is respectively connected to the water pipe, and a plurality of scrapers are also arranged on the cleaning plug, each of which is respectively connected to the cleaning plug, and the edge of each scraper is respectively tightly fitted with the inner wall of the sleeve to be cleaned;

[0020] When in use, first connect the cleaning plug to the traction module, then implant the cleaning plug into the casing to be cleaned, and at the same time, the scraper is in close contact with the inner wall of the casing to be cleaned; then, a large amount of cleaning water is sprayed to the inner wall of the casing to be cleaned through the water pipe and the high-pressure nozzle to remove the pollutants attached to the inner wall of the casing. It should be pointed out that a large amount of detergent can be added to the cleaning water; at the same time, the cleaning plug is pulled by the traction module, and the cleaning plug will scrape off the pollutants and bring the residual cleaning water out of the casing together, thereby achieving thorough cleaning of the casing;

[0021] Compared with the prior art, the present invention not only realizes rapid spray cleaning and decontamination through a high-pressure nozzle, but also performs secondary scraping of the inner wall of the casing through a cleaning plug, which not only further removes stubborn attachments on the inner wall of the casing, but also quickly discharges sewage out of the casing, which is beneficial to improving the cleaning efficiency;

[0022] Secondly, high-pressure cleaning water can not only wash away pollutants, but also soften various stubborn attachments by adding different cleaning agents, which is conducive to improving the cleaning effect of later scraping and cleaning. The two work together to improve the cleaning quality;

[0023] Finally, the high-pressure flushing and scraping of attachments of the present application are completed simultaneously in one operation cycle, and the inner wall of the casing can be cleaned by the traction module. The cleaning procedure is simple and easy to operate, which is conducive to improving the cleaning efficiency of the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a casing inner wall cleaning device provided in Embodiment 1 of the present application;

[0025] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0026] Figure 3 It is a schematic diagram of the structure of the water distribution tray;

[0027] Figure 4 is a structural schematic diagram of the support frame;

[0028] Figure 5 It is a schematic diagram of the structure of the scraper;

[0029] Figure markings: 1-frame, 2-support frame, 3-cleaning plug, 4-high-pressure nozzle, 5-water pipe, 6-scraper, 8-traction cable, 9-winch, 10-traction hook, 11-water distribution tray, 12-water outlet, 13-flange plate, 14-sealing plate, 15-connecting ring, 16-reinforcement rib, 17-blocking ring, 18-isolating ring, 19-guide surface, 201-support rod, 202-limiting ring, 203-fastening ring, 204-connecting screw, 301-shell, 302-water branch pipe, 601-support core, 602-rubber scraping layer.

[0030] The purpose, features and advantages of this application will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0035] Implementation Method 1

[0036] Reference Figures 1 to 5, this embodiment is an optional embodiment of the present application, which discloses a casing inner wall cleaning device, including a frame 1, along the length direction of the frame 1, a plurality of support frames 2 are arranged on the frame 1, the support frame 2 includes a support rod 201 and a limit ring 202, one end of the support rod 201 is connected to the frame 1, and the other end is connected to the limit ring 202, the limit ring 202 is a semicircular structure, the limit ring 202 is further hinged with a fastening ring 203, the fastening ring 203 is also a semicircular structure, and a connecting screw 204 is further arranged between the fastening ring 203 and the limit ring 202;

[0037] The sleeve to be cleaned is fixed by the limiting ring 202 and the fastening ring 203 to prevent displacement in the axial direction during the cleaning process.

[0038] A traction module is also provided on one side of the frame 1, and the traction module includes a traction cable 8 and a winch 9, one end of the traction cable 8 is connected to the winch 9, and the other end thereof is provided with a traction hook 10; the winch 9 is provided on the frame 1;

[0039] The cleaning device also includes a cleaning plug 3, which includes a shell 301. The shell 301 is a cylindrical structure with a cavity inside. Both ends of the shell 301 are open and are provided with flange plates 13. Both flange plates 13 are connected to sealing plates 14, and the shell 301 is sealed by the sealing plates 14. A water pipe 5 and a plurality of water branch pipes 302 are also provided in the shell 301. One end of the drain pipe passes through one of the sealing plates 14 and is connected to an external high-pressure water source through a hose. The other end of the drain pipe passes through the sealing plate 14 and is connected to an external high-pressure water source through a hose. One end is located in the housing 301, and a water distribution plate 11 is also arranged between the water delivery pipe 5 and the water delivery branch pipe 302. The water distribution plate 11 is cylindrical, and its interior is a cavity structure. One end of the water distribution plate 11 is connected to the water delivery pipe 5 through a connecting sleeve, so as to realize the introduction of water flow; a plurality of water outlets 12 are arranged at the other end, and each of the water outlets 12 is evenly arranged around the axis of the water distribution plate 11, and each of the drain branch pipes is respectively connected to each of the water outlets 12 by thread, so as to realize the output of water flow;

[0040] Each of the drain branch pipes passes through another sealing plate 14, and a high-pressure nozzle 4 is provided at one end of each of the drain pipes located outside the shell 301;

[0041] By setting the water distribution plate 11, the number of water delivery branches 302 can be increased as much as possible under the condition that the diameter of the water delivery pipe 5 is constant, thereby improving the cleaning effect of the inner wall of the casing;

[0042] Along the sliding direction of the cleaning plug 3, a connecting ring 15 adapted to the traction hook 10 is also provided on the sealing plate 14 at the front end of the housing 301; a plurality of reinforcing ribs 16 are also provided on one side of the sealing plate 14 located inside the housing 301; the cooperation between the connecting ring 15 and the traction hook 10 can realize the quick connection between the cleaning plug 3 and the traction cable 8, which helps to improve the connection efficiency; at the same time, the reinforcing ribs 16 can effectively improve the structural strength of the sealing plate 14 to prevent it from being deformed during long-term use;

[0043] The housing 301 is also provided with a retaining ring 17. A plurality of scrapers 6 are sequentially provided on the housing 301 along the axial direction of the housing 301. The retaining ring 17 abuts against the scrapers 6. An isolating ring 18 is further provided between any two adjacent scrapers 6. The outer diameter of each scraper 6 is larger than the outer diameter of the isolating ring 18. Each scraper 6 is respectively tightly fitted with the inner wall of the casing to be cleaned.

[0044] Each of the scrapers 6 comprises a support core 601 and a rubber scraping layer 602, wherein the support core 601 is an annular structure, and the rubber scraping layer 602 is wrapped around the outer surface of the support core 601;

[0045] The support core 601 can effectively improve the structural strength of the entire scraper 6, thereby ensuring that the axis of the cleaning plug 3 coincides with the axis of the sleeve, avoiding the gap between the top of the scraper 6 and the inner wall of the sleeve due to the scraper 6 being too soft, and improving the scraping effect of the scraper 6;

[0046] The scraper 6 can not only scrape the high-pressure cleaning water from the casing, but also scrape the stubborn attachments that cannot be washed away by the high-pressure cleaning water, effectively improving the cleaning quality of the inner wall of the casing. The scraper 6 moves with the cleaning plug 3, and there is no need to set up an additional driving device, which is conducive to simplifying the structure of the equipment.

[0047] Along the moving direction of the cleaning plug 3, the front side of each scraper 6 is provided with a conical guide surface 19; the isolation ring 18 arranged on the outermost side is connected with the housing 301 by interference fit; the convergence structure of the guide surface 19 can effectively reduce the difficulty of implanting the cleaning plug 3 into the sleeve to be cleaned, thereby improving the assembly efficiency;

[0048] The interference fit provides stability between the scraper 6 and the cleaning plug, thereby preventing relative displacement between the scraper 6 and the cleaning plug during use.

[0049] When in use, firstly, the traction cable is passed through the casing to be cleaned and then connected to the cleaning plug, and then the cleaning plug is implanted into the casing to be cleaned, and at the same time, the scraper is closely fitted with the inner wall of the casing to be cleaned; then, a large amount of cleaning water is sprayed to the inner wall of the casing to be cleaned through the water pipe and the high-pressure nozzle to remove the pollutants attached to the inner wall of the casing. It should be pointed out that a large amount of detergent can be added to the cleaning water; at the same time, the cleaning plug is pulled by the traction module, and the cleaning plug will scrape off the pollutants and bring the residual cleaning water out of the casing together, so as to achieve thorough cleaning of the casing;

[0050] Compared with the prior art, the present invention not only realizes rapid spray cleaning and decontamination through a high-pressure nozzle, but also performs secondary scraping of the inner wall of the casing through a cleaning plug, which not only further removes stubborn attachments on the inner wall of the casing, but also quickly discharges sewage out of the casing, which is beneficial to improving the cleaning efficiency;

[0051] Secondly, high-pressure cleaning water can not only wash away pollutants, but also soften various stubborn attachments by adding different cleaning agents, which is conducive to improving the cleaning effect of later scraping and cleaning. The two work together to improve the cleaning quality;

[0052] Finally, the high-pressure flushing and scraping of attachments of the present application are completed simultaneously in one operation cycle, and the inner wall of the casing can be cleaned by the traction module. The cleaning procedure is simple and easy to operate, which is conducive to improving the cleaning efficiency of the casing.

[0053] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A casing inner wall cleaning device, characterized in that: It comprises a frame (1), on which a plurality of support frames (2) for supporting the sleeves to be cleaned are arranged; A traction module, the traction module being arranged on the frame (1); A cleaning plug (3), one end of which is connected to the traction module; the cleaning plug (3) is provided with a plurality of high-pressure nozzles (4) aimed at the inner wall of the casing to be cleaned; the cleaning plug (3) is also provided with a water pipe (5) for conveying high-pressure cleaning water, and each of the high-pressure nozzles (4) is respectively connected to the water pipe (5); A plurality of scrapers (6) are provided in sequence along the axial direction of the cleaning plug (3), each of the scrapers (6) is connected to the cleaning plug (3), and the edge of each scraper (6) is tightly fitted to the inner wall of the sleeve to be cleaned.

2. A casing inner wall cleaning device according to claim 1, characterized in that: The support frame (2) comprises a support rod (201) and a limiting ring (202), wherein the limiting ring (202) is of a semicircular structure; a fastening ring (203) is hingedly connected to the limiting ring (202), and a connecting screw (204) is provided between the limiting ring (202) and the fastening ring (203).

3. A casing inner wall cleaning device according to claim 1, characterized in that: The traction module comprises a traction cable (8) and a winch (9), wherein the traction cable (8) is connected to the winch (9); the cleaning plug (3) is connected to the traction cable (8) via a traction hook (10).

4. A casing inner wall cleaning device according to claim 3, characterized in that: The cleaning plug (3) comprises a shell (301), the water pipe (5) is arranged on the shell (301), one end of the water pipe (5) is connected to an external high-pressure water source; the outlet end of the water pipe (5) is connected in parallel with a plurality of water branch pipes (302), and each of the water branch pipes (302) is respectively connected to a corresponding high-pressure nozzle (4).

5. A casing inner wall cleaning device according to claim 4, characterized in that: A water distribution plate (11) is also provided in the housing (301), one end of the water distribution plate (11) is threadedly connected to the water delivery pipe (5), and the other end of the water distribution plate is provided with a plurality of water outlets (12), each of the water outlets (12) is threadedly connected to each of the water delivery branch pipes (302).

6. A casing inner wall cleaning device according to claim 4, characterized in that: Both ends of the shell (301) are connected to sealing plates (14) via flange plates (13), and the water delivery pipe (5) and each of the water delivery branch pipes (302) are respectively connected to the two sealing plates (14).

7. A casing inner wall cleaning device according to claim 6, characterized in that: A connecting ring (15) adapted to the traction hook (10) is also provided on the sealing plate (14) at the front end of the housing (301); and a plurality of reinforcing ribs (16) are also provided on the inner side of the sealing plate (14).

8. A casing inner wall cleaning device according to claim 4, characterized in that: A retaining ring (17) is provided on the shell (301), and a plurality of scrapers (6) are sequentially provided on the shell (301) along the axial direction of the shell (301), the retaining ring (17) abuts against the scrapers (6), and an isolating ring (18) is further provided between any two adjacent scrapers (6); the outer diameter of each scraper (6) is greater than the outer diameter of the isolating ring (18), and each scraper (6) is respectively tightly fitted with the inner wall of the sleeve to be cleaned.

9. A casing inner wall cleaning device according to claim 8, characterized in that: Along the moving direction of the cleaning plug (3), a guide surface (19) with a conical structure is arranged on the front side of each scraper (6); the isolation ring (18) arranged on the outermost side is interference-connected with the housing (301).

10. A casing inner wall cleaning device according to claim 1 or 8, characterized in that: The scraper (6) comprises a support core (601) in an annular structure, and the surface of the support core (601) is coated with a rubber scraping layer (602).

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