Pipe sweeping device for coiled tubing

Abstract

The utility model discloses a pipe sweeping device for a continuous oil pipe, which comprises a continuous oil pipe body, a transmitting mechanism, a receiving mechanism and a pipe sweeping mechanism, the transmitting mechanism and the receiving mechanism are respectively assembled at two ends of the continuous oil pipe body, and the pipe sweeping mechanism is assembled in the transmitting mechanism. The receiving mechanism comprises a receiving barrel which is installed at the other end of the coiled tubing body in a butt joint mode, and the tube sweeping mechanism comprises a first moving seat which is installed in a launching barrel in a sliding mode. According to the pipe sweeping device for the continuous oil pipe, when the pipe sweeping mechanism moves in the continuous oil pipe body, stubborn impurities attached to the inner wall of the continuous oil pipe body can be cleared away through the rotating head, the situation of omission is avoided, meanwhile, the impurities accumulated after clearing can enter the storage box to be stored, and the cleaning efficiency is improved. And the condition that the impurities are accumulated outside to block the movement of the pipe sweeping mechanism to cause jamming is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coiled tubing cleaning, in particular to a coiled tubing sweeping device. Background Technique

[0002] In the petroleum industry, coiled tubing, as an important production device, is widely used in operations such as chemical and cement transportation in oil wells, temporary plugging of oil and gas wells, and repair of well walls. However, with the increase in usage time, sediments are likely to be generated inside the coiled tubing, which not only affects the normal function of the tubing but also may shorten its service life. Therefore, it is necessary to regularly clean the sediments inside the coiled tubing.

[0003] However, most of the current coiled tubing sweeping devices push the sweeper to move inside the coiled tubing through high-pressure air flow to push out the impurities inside the tubing. However, during the cleaning process, since some impurities adhere firmly to the pipe wall, it is difficult to clean them off. At the same time, during the cleaning process, the impurities will accumulate on one side of the sweeper and be pushed, which easily causes the sweeper to move slowly and get stuck, reducing the cleaning effect. Therefore, the applicant proposes a coiled tubing sweeping device to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a coiled tubing sweeping device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A coiled tubing sweeping device includes a coiled tubing body, a launching mechanism and a receiving mechanism respectively assembled at both ends of the coiled tubing body, and a sweeping mechanism assembled inside the launching mechanism;

[0006] The launching mechanism includes a launching cylinder docked and installed at one end of the coiled tubing body, and the receiving mechanism includes a receiving cylinder docked and installed at the other end of the coiled tubing body;

[0007] The sweeping mechanism includes a first moving seat slidably installed inside the launching cylinder. A first scraping disc is fixedly installed on the outer side of the first moving seat. A driving motor is fixedly installed inside the first moving seat. The output shaft of the driving motor penetrates through one side of the first moving seat and is connected to a rotating head. A storage box is rotatably installed inside the rotating head. The other side of the first moving seat is fixedly connected to a second moving seat. A second scraping disc is fixedly installed on the outer side of the second moving seat.

[0008] Preferably, an air injection pipe and a water injection pipe are respectively fixedly installed at the top of the launching cylinder. A first sealing door is hingedly installed on one side of the launching cylinder.

[0009] Preferably, an exhaust valve is fixedly installed on the top of the receiving tube, and a second sealing door is hingedly installed on one side of the receiving tube.

[0010] Preferably, cleaning teeth are provided on one side of the rotating head, and the cleaning teeth are arranged in a circular shape and are equidistantly distributed.

[0011] Preferably, a connecting rope is fixedly connected between the first movable seat and the second movable seat, and an installation chamber for fixing the driving motor is opened inside the first movable seat.

[0012] Preferably, an installation cavity is provided inside the first movable seat and on one side of the installation chamber, and a battery is fixedly installed inside the installation cavity.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The coiled tubing sweeping device can utilize the rotating action of the rotating head to remove stubborn impurities adhered to the inner wall of the coiled tubing body when the sweeping mechanism moves inside the coiled tubing body, thereby avoiding omissions. At the same time, impurities accumulated after cleaning can be stored in the storage box inside the rotating head as the sweeping mechanism moves, thereby effectively avoiding the impurities accumulating outside and blocking the movement of the sweeping mechanism and causing jamming. The first scraper and the second scraper can conveniently perform multiple scraping and cleaning on the inside of the coiled tubing body, thereby effectively improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the sweeping mechanism of the present utility model;

[0019] Figure 4 This is a schematic cross-sectional structural diagram of the rotary head of the present invention;

[0020] Figure 5 This is a schematic cross-sectional structural diagram of the first movable seat of the present invention.

[0021] In the figure: 1. Launching mechanism; 101. Launching tube; 102. Gas injection pipe; 103. First sealing door; 104. Water injection pipe; 2. Coiled tubing body; 3. Receiving mechanism; 301. Receiving tube; 302. Exhaust valve; 303. Second sealing door; 4. Pipe cleaning mechanism; 401. First moving seat; 402. First scraping disc; 403. Connecting rope; 404. Second moving seat; 405. Second scraping disc; 406. Installation chamber; 407. Driving motor; 408. Installation cavity; 409. Storage battery; 5. Rotary head; 501. Cleaning teeth; 502. Storage box. Detailed implementation mode

[0022] The following embodiments will describe the present utility model in detail in conjunction with the accompanying drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shapes, thicknesses or heights of the components can be enlarged or reduced. Each embodiment listed in the present utility model is only used to illustrate the present utility model, and is not used to limit the scope of the present utility model. Any obvious modification or change made to the present utility model does not depart from the spirit and scope of the present utility model.

[0023] Please refer to Figures 1-5 As shown, the pipe cleaning device for coiled tubing proposed by the present utility model includes a coiled tubing body 2, a launching mechanism 1 and a receiving mechanism 3 respectively assembled at both ends of the coiled tubing body 2, and a pipe cleaning mechanism 4 assembled in the launching mechanism 1. The launching mechanism 1 includes a launching tube 101 docked and installed at one end of the coiled tubing body 2. The receiving mechanism 3 includes a receiving tube 301 docked and installed at the other end of the coiled tubing body 2. The pipe cleaning mechanism 4 includes a first moving seat 401 slidably installed in the launching tube 101. A first scraping disc 402 is fixedly installed on the outer side of the first moving seat 401. A driving motor 407 is fixedly installed inside the first moving seat 401. The output shaft of the driving motor 407 penetrates through one side of the first moving seat 401 and is connected to a rotary head 5. A storage box 502 is rotatably installed inside the rotary head 5. The other side of the first moving seat 401 is fixedly connected to a second moving seat 404. A second scraping disc 405 is fixedly installed on the outer side of the second moving seat 404.

[0024] Based on the above structure settings, the continuous tubing cleaning device consists of a launching mechanism 1, a continuous tubing body 2, a receiving mechanism 3, and a cleaning mechanism 4. Among them, by connecting the launching mechanism 1 to one end of the continuous tubing body 2 and the receiving mechanism 3 to the other end of the continuous tubing body 2, by placing the cleaning mechanism 4 into the launching mechanism 1, the launching mechanism 1 can push the cleaning mechanism 4 into the continuous tubing body 2 for movement. Through the movement of the cleaning mechanism 4, it is convenient to clean the impurities inside the continuous tubing body 2. After the cleaning mechanism 4 passes through the continuous tubing body 2, it can enter the receiving mechanism 3, which facilitates the removal of the cleaning mechanism 4 and can discharge the cleaned impurities at the same time. Specifically, during the working process, by connecting the launching cylinder 101 to one end of the continuous tubing body 2, connecting the receiving cylinder 301 to the other end of the continuous tubing body 2, placing the cleaning mechanism 4 into the launching cylinder 101, injecting cleaning liquid into the launching cylinder 101 so that the cleaning liquid is placed between the first moving seat 401 and the second moving seat 404. Through the blocking effect of the first scraping disc 402 and the second scraping disc 405, the cleaning liquid can always be kept between the first moving seat 401 and the second moving seat 404. By injecting high-pressure air into the launching cylinder 101 on the side of the second moving seat 404, the high-pressure air can exert a thrust on the second moving seat 404, which can push the entire cleaning mechanism 4 into the continuous tubing body 2 for movement. Through the driving motor 407, the rotating head 5 can be driven to rotate, so that when the rotating head 5 moves inside the continuous tubing body 2, the stubborn impurities adhering to the inner wall of the continuous tubing body 2 can be cleared, and along with the movement of the rotating head 5, the cleared impurities can be introduced into the storage box 502 for storage. Since the storage box 502 is rotatably connected inside the rotating head 5, due to the action of gravity, the storage box 502 can always maintain a vertical state, which does not affect the rotation function of the rotating head 5 and can avoid the situation that the storage box 502 rotates with the rotating head 5 and throws out the impurities. By the cleaning mechanism 4 continuing to move inside the continuous tubing body 2, the first scraping disc 402 can be used to conveniently scrape the residual impurities on the inner wall of the continuous tubing body 2. At the same time, the cleaning liquid stored between the first moving seat 401 and the second moving seat 404 can scour the inner wall of the continuous tubing body 2 as the cleaning mechanism 4 moves. The second scraping disc 405 can scrape the water stains on the inner wall of the scoured continuous tubing body 2, which can avoid the influence of water stain residue on the use effect of the continuous tubing body 2 and can effectively improve the cleaning effect. After the cleaning mechanism 4 moves inside the continuous tubing body 2, it will move into the receiving cylinder 301, which facilitates the export of the cleaning mechanism 4 and the cleaning liquid.

[0025] Further, an air injection pipe 102 and a water injection pipe 104 are fixedly installed at the top of the launch tube 101 respectively. A first sealing door 103 is hingedly installed on one side of the launch tube 101. Among them, through the air injection pipe 102, it is convenient to connect equipment such as an air pump, and it is convenient to inject high-pressure air into the launch tube 101 to push the pipe sweeping mechanism 4 to move. Through the water injection pipe 104, it is convenient to connect to a water source, and the cleaning liquid can be injected between the first moving seat 401 and the second moving seat 404 to facilitate the flushing operation of the inner wall of the coiled tubing body 2. By opening the first sealing door 103, it is convenient to put the pipe sweeping mechanism 4 into the launch tube 101, and at the same time, the entrance of the launch tube 101 can be sealed.

[0026] Further, an exhaust valve 302 is fixedly installed at the top of the receiving tube 301. A second sealing door 303 is hingedly installed on one side of the receiving tube 301. Among them, through the exhaust valve 302, during the movement of the pipe sweeping mechanism 4, the excess air in the coiled tubing body 2 can be discharged to avoid affecting the movement of the pipe sweeping mechanism 4. By opening the second sealing door 303, it is convenient to take out the pipe sweeping mechanism 4 from the receiving tube 301.

[0027] Further, cleaning teeth 501 are provided on one side of the rotating head 5. The cleaning teeth 501 are evenly distributed in a circular array at equal intervals. Among them, when the rotating head 5 rotates, the cleaning teeth 501 can be used to break the stubborn impurities on the inner wall of the coiled tubing body 2, and the cleaning operation can be carried out more easily.

[0028] Further, a connecting rope 403 is fixedly connected between the first moving seat 401 and the second moving seat 404. An installation chamber 406 for fixing the drive motor 407 is provided inside the first moving seat 401. Among them, through the connecting rope 403, the situation that the first moving seat 401 and the second moving seat 404 are separated can be avoided. Through the installation chamber 406, it is convenient to install and fix the drive motor 407.

[0029] Further, an installation cavity 408 is provided inside the first moving seat 401 and on one side of the installation chamber 406. A storage battery 409 is fixedly installed inside the installation cavity 408. Among them, through the storage battery 409, it is convenient to supply power to the drive motor 407, so that the drive motor 407 can conveniently drive the rotating head 5 to rotate.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0031] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Sweeping device for coiled tubing, characterized in that: It includes a coiled tubing body (2), a launching mechanism (1) and a receiving mechanism (3) respectively assembled at both ends of the coiled tubing body (2), and a pipe cleaning mechanism (4) assembled in the launching mechanism (1). The launching mechanism (1) includes a launching cylinder (101) docked and installed at one end of the coiled tubing body (2), and the receiving mechanism (3) includes a receiving cylinder (301) docked and installed at the other end of the coiled tubing body (2). The pipe cleaning mechanism (4) includes a first moving seat (401) slidably installed in the launching cylinder (101). A first scraping disc (402) is fixedly installed on the outer side of the first moving seat (401). A driving motor (407) is fixedly installed inside the first moving seat (401). The output shaft of the driving motor (407) penetrates through one side of the first moving seat (401) and is connected to a rotating head (5). A storage box (502) is rotatably installed inside the rotating head (5). The other side of the first moving seat (401) is fixedly connected to a second moving seat (404). A second scraping disc (405) is fixedly installed on the outer side of the second moving seat (404).

2. The pipe sweeping device for continuous oil pipes according to claim 1, characterized in that: An air injection pipe (102) and a water injection pipe (104) are respectively fixedly installed at the top of the launching cylinder (101). A first sealing door (103) is hingedly installed on one side of the launching cylinder (101).

3. The pipe sweeping device for continuous oil pipes according to claim 1, characterized in that: An exhaust valve (302) is fixedly installed at the top of the receiving cylinder (301). A second sealing door (303) is hingedly installed on one side of the receiving cylinder (301).

4. The pipe sweeping device for continuous oil pipes according to claim 1, characterized in that: A cleaning tooth (501) is provided on one side of the rotating head (5), and the cleaning teeth (501) are evenly distributed in an annular array at equal intervals.

5. The pipe sweeping device for continuous oil pipes according to claim 4, characterized in that: A connecting rope (403) is fixedly connected between the first moving seat (401) and the second moving seat (404). An installation chamber (406) for fixing the driving motor (407) is provided inside the first moving seat (401).

6. The tubing sweeping device for continuous tubing according to claim 1, characterized in that: An installation cavity (408) is provided inside the first moving seat (401) and on one side of the installation chamber (406). A storage battery (409) is fixedly installed inside the installation cavity (408).

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