CN219197262U

CN219197262U - Coiled tubing sealing device

Info

Publication number: CN219197262U
Application number: CN202320291466.6U
Authority: CN
Inventors: 李禹辰; 刘立军
Original assignee: Daqing Chenping Drilling Technology Service Co ltd
Current assignee: Daqing Chenping Drilling Technology Service Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-16
Anticipated expiration: 2033-02-22

Abstract

The utility model relates to the technical field of sealing devices, in particular to a continuous oil pipe sealing device, which comprises a first continuous oil pipe, wherein the left side end of the first continuous oil pipe is in a conical design, a fixed lock sleeve is fixedly arranged on the circumferential surface of the left side section of the first continuous oil pipe, a threaded connecting groove is formed in the left side end of the fixed lock sleeve, and a hollow screw is arranged in the threaded connecting groove formed in the fixed lock sleeve through threads. According to the utility model, the second sealing rubber ring and the first sealing rubber ring are extruded, the second sealing rubber ring and the first sealing rubber ring can play a role in sealing in the extrusion process, and oil in the oil pipe is enabled to permeate outwards from the position of the second sealing rubber ring even through the design of the conical opening at the left side end of the first continuous oil pipe, and the inner oil cannot leak outwards due to the conical design of the first continuous oil pipe and the tightness degree between the first continuous oil pipe and the second continuous oil pipe, and meanwhile, the sealing performance of the oil pipe is further ensured due to the guarantee of the first sealing rubber ring.

Description

Coiled tubing sealing device

Technical Field

The utility model relates to the technical field of sealing devices, in particular to a coiled tubing sealing device.

Background

The coiled tubing is a tubing made of low-carbon alloy steel, has good flexibility, is also called a coiled tubing, has a length of a coil of the coiled tubing of thousands of meters, can replace a conventional tubing to perform a plurality of operations, and has the characteristics of pressurized operation and continuous lifting, and has the advantages of small equipment volume, quick operation period and low cost;

in the in-service use process of the continuous oil pipe, in order to ensure the tightness of the joint of the multi-end oil pipe, the sealing device can be used for sealing and installing the oil pipe, so that the effect of preventing leakage is achieved, the existing sealing device does not have the function of multiple sealing, the hidden danger of general tightness and easy leakage exists in the use process, and the practicability of the sealing device is reduced.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a coiled tubing sealing device, which comprises a first coiled tubing, wherein the left side end of the first coiled tubing is in a conical design, a fixed lock sleeve is fixedly arranged on the circumferential surface of the left side section of the first coiled tubing, a threaded connecting groove is formed in the left side end of the fixed lock sleeve, a hollow screw is arranged in the threaded connecting groove formed in the fixed lock sleeve through threads, a rotating groove is formed in the circumferential inner wall of the hollow screw, a limiting circular ring is rotationally sleeved in the rotating groove formed in the hollow screw, a second coiled tubing is fixedly arranged in the circumferential inner wall of the limiting circular ring, the left side end of the first coiled tubing is movably arranged on the right side inner wall of the second coiled tubing and is matched with the right side inner wall of the second coiled tubing, a second sealing rubber ring is arranged between the inner wall opening of the second coiled tubing and the left side end of the first coiled tubing, and a first sealing rubber ring is arranged between the right side end of the second coiled tubing and the left side end of the fixed lock sleeve.

In order to solve the technical problems, the utility model provides the following technical scheme:

as a preferable technical scheme of the utility model, the circumferential surface of the first continuous oil pipe is penetrated and slidably provided with a first protective cover, and rectangular blocks are fixedly arranged at the upper end and the lower end of the circumferential surface of the first protective cover.

As a preferable technical scheme of the utility model, rectangular through holes are formed in the side ends of the two rectangular blocks in a penetrating manner.

As a preferable technical scheme of the utility model, the circumferential surface of the second continuous oil pipe is penetrated and slidably provided with a second protective cover, and the upper end and the lower end of the circumferential surface of the second protective cover are fixedly provided with fixed blocks.

As a preferable technical scheme of the utility model, the right side ends of the two fixing blocks are fixedly provided with the latch plates.

As a preferable technical scheme of the utility model, the two latch plates are respectively movably sleeved in rectangular through holes formed in the two rectangular blocks.

Compared with the prior art, the utility model has the following beneficial effects:

1. this coiled tubing sealing device, under hollow screw's rotation, last closely combine between hollow screw and the fixed lock sleeve, at this in-process, second seal rubber circle and first seal rubber circle all can be extruded, at extruded in-process, second seal rubber circle and first seal rubber circle alright play fine sealed effect, moreover through the design of first coiled tubing left side end cone mouth, even if the outside infiltration in the position of second seal rubber circle for the oil in this oil pipe can also be because first coiled tubing's cone design, and with the inseparable degree between the second coiled tubing, make inside oil can not outwards leak more, and also the guarantee of first seal rubber circle, further ensure oil pipe's leakproofness.

2. This coiled tubing sealing device can remove first protective cover left, and the second protective cover removes right, and the rectangle through-hole department that sets up two rectangle pieces is opposite to two bayonet lock boards removes, and two bayonet lock boards just can pass the rectangle through-hole that two rectangle pieces set up this moment to the joint has been carried out, and first protective cover and second protective cover just wrap up fixed lock sleeve and hollow screw inside this moment, prevent hollow screw and fixed lock sleeve receive the windy insolation and the sand drift wearing and tearing scheduling problem, avoid appearing the problem at the in-process that later stage was opened.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of a first protective cover according to the present utility model;

FIG. 3 is a schematic view of the structure of a second coiled tubing of the present utility model;

fig. 4 is a schematic structural view of the first coiled tubing of the present utility model.

Wherein: 11. a first continuous oil pipe; 12. fixing the lock sleeve; 13. a first sealing rubber ring; 14. the second sealing rubber ring; 21. a second coiled tubing; 22. a limit circular ring; 23. a hollow screw; 24. a rotating groove; 31. a first protective cover; 32. rectangular blocks; 33. a latch plate; 34. a fixed block; 35. and a second protective cover.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

Examples:

as shown in fig. 1, 2, 3 and 4, the coiled tubing sealing device comprises a first coiled tubing 11, the left end of the first coiled tubing 11 is conical, a fixed lock sleeve 12 is fixedly arranged on the circumferential surface of the left section of the first coiled tubing 11, a threaded connecting groove is formed at the left end of the fixed lock sleeve 12, a hollow screw 23 is arranged in the threaded connecting groove formed by the fixed lock sleeve 12 through threads, a rotating groove 24 is formed in the circumferential inner wall of the hollow screw 23, a limiting circular ring 22 is sleeved in the rotating groove 24 formed in the hollow screw 23 in a rotating way, a second coiled tubing 21 is fixedly arranged on the circumferential inner wall of the limiting circular ring 22, the left end of the first coiled tubing 11 is movably arranged on the right inner wall of the second coiled tubing 21 and is matched with the left end of the first coiled tubing 11, a second sealing rubber ring 14 is arranged between the inner wall opening of the second coiled tubing 21 and the left end of the first coiled tubing 11, when the coiled tubing is connected, a user faces the second sealing rubber ring 14 to the left side end of the first coiled tubing 11, then faces the first sealing rubber ring 13 to the left side end of the fixed lock sleeve 12, the left side end of the first coiled tubing 11 is put into the second coiled tubing 21, as the rotating groove 24 is in threaded connection with the connecting groove formed in the fixed lock sleeve 12, the hollow screw 23 is rotatably arranged on the circumferential surfaces of the second coiled tubing 21 and the limiting circular ring 22 through the rotating groove 24, the limiting circular ring 22 can limit the hollow screw 23, so that the hollow screw 23 can only rotate and not move, under the rotation of the hollow screw 23, the hollow screw 23 and the fixed lock sleeve 12 are continuously and tightly combined, in the process, the second sealing rubber ring 14 and the first sealing rubber ring 13 are extruded, in the extrusion process, the second sealing rubber ring 14 and the first sealing rubber ring 13 can play a good sealing role, and through the design of the conical opening at the left side end of the first continuous oil pipe 11, oil in the oil pipe can permeate outwards even from the position of the second sealing rubber ring 14, the oil in the oil pipe can not leak outwards due to the conical design of the first continuous oil pipe 11 and the tightness degree between the oil pipe and the second continuous oil pipe 21, the sealing performance of the oil pipe is further ensured due to the guarantee of the first sealing rubber ring 13, the first sealing rubber ring 13 is arranged between the right side end of the second continuous oil pipe 21 and the left side end of the fixed lock sleeve 12, the first continuous oil pipe 11 penetrates through the first protective cover 31 in a sliding mode, and rectangular blocks 32 are fixedly arranged at the upper end and the lower end of the circumferential surface of the first protective cover 31. Rectangular through holes are formed through the side ends of the two rectangular blocks 32. The second continuous oil pipe 21 is provided with a second protective cover 35 in a penetrating and sliding manner on the circumferential surface, and the upper end and the lower end of the circumferential surface of the second protective cover 35 are fixedly provided with fixed blocks 34. The right side ends of the two fixing blocks 34 are fixedly provided with a latch plate 33. The two latch plates 33 are movably sleeved in the rectangular through holes formed in the two rectangular blocks 32 respectively, after the second continuous oil pipe 21 and the first continuous oil pipe 11 are installed, a user can move the first protective cover 31 leftwards, the second protective cover 35 rightwards, the two latch plates 33 face the rectangular through holes formed in the two rectangular blocks 32, at the moment, the two latch plates 33 can penetrate through the rectangular through holes formed in the two rectangular blocks 32 and are clamped, at the moment, the first protective cover 31 and the second protective cover 35 wrap the fixed lock sleeve 12 and the hollow screw rod 23 inside, the hollow screw rod 23 and the fixed lock sleeve 12 are prevented from being exposed to wind and sun, quicksand abrasion and other problems in the later opening process are avoided.

Description of use: when the continuous oil pipe is connected, a user faces the left side end of the first continuous oil pipe 11 through the second sealing rubber ring 14, then faces the left side end of the fixed lock sleeve 12 through the first sealing rubber ring 13, the left side end of the first continuous oil pipe 11 is placed into the second continuous oil pipe 21, the second sealing rubber ring 14 and the first sealing rubber ring 13 can play a good sealing role in the extrusion process due to the threaded connection between the rotating groove 24 and the connecting groove formed in the fixed lock sleeve 12, the hollow screw rod 23 is rotatably arranged on the circumferential surfaces of the second continuous oil pipe 21 and the limiting circular ring 22 through the rotating groove 24 formed, the limiting circular ring 22 can limit the hollow screw rod 23, the hollow screw rod 23 can only rotate and cannot move, the hollow screw rod 23 and the fixed lock sleeve 12 are continuously and tightly combined under the rotation of the hollow screw rod 23, and even though the hollow screw rod 23 and the first sealing rubber ring 13 are designed in the conical opening of the left side end of the first continuous oil pipe 11, the sealing rubber ring 14 and the first sealing rubber ring 13 can not leak out of the first continuous oil pipe 13 due to the fact that the sealing rubber ring is designed in the conical opening of the left side of the first continuous oil pipe 11.

After the second coiled tubing 21 and the first coiled tubing 11 are installed, a user can move the first protecting cover 31 leftwards, the second protecting cover 35 rightwards, the two clamping pin plates 33 move towards the rectangular through holes formed in the two rectangular blocks 32, at the moment, the two clamping pin plates 33 penetrate through the rectangular through holes formed in the two rectangular blocks 32 and are clamped, at the moment, the first protecting cover 31 and the second protecting cover 35 wrap the fixed lock sleeve 12 and the hollow screw 23 inside, the hollow screw 23 and the fixed lock sleeve 12 are prevented from being exposed to wind, sun and sand and abrasion, and the like, and problems in the later opening process are avoided.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. A coiled tubing sealing device comprising a first coiled tubing (11), characterized in that: the left end of the first continuous oil pipe (11) is in a conical design, a fixed lock sleeve (12) is fixedly arranged on the circumferential surface of the left side section of the first continuous oil pipe (11), a threaded connecting groove is formed in the left side end of the fixed lock sleeve (12), a hollow screw (23) is arranged in the threaded connecting groove formed in the fixed lock sleeve (12) through threads, a rotating groove (24) is formed in the circumferential inner wall of the hollow screw (23), a limiting circular ring (22) is sleeved in the rotating groove (24) formed in the hollow screw (23) in a rotating mode, a second continuous oil pipe (21) is fixedly arranged on the circumferential inner wall of the limiting circular ring (22), the left side end of the first continuous oil pipe (11) is movably arranged on the right side inner wall and is matched with the right side inner wall of the second continuous oil pipe (21), a second sealing rubber ring (14) is arranged between the inner wall opening of the second continuous oil pipe (21) and the left side end of the first continuous oil pipe (11), and a first sealing rubber ring (13) is arranged between the right side end of the second continuous oil pipe (21) and the left side end of the fixed lock sleeve (12).

2. A coiled tubing sealing apparatus according to claim 1, wherein: the circumference surface of the first continuous oil pipe (11) is penetrated and slidably provided with a first protective cover (31), and rectangular blocks (32) are fixedly arranged at the upper end and the lower end of the circumference surface of the first protective cover (31).

3. A coiled tubing sealing apparatus according to claim 2, wherein: rectangular through holes are formed in the side ends of the two rectangular blocks (32) in a penetrating mode.

4. A coiled tubing sealing apparatus according to claim 3, wherein: the circumference surface of the second continuous oil pipe (21) is penetrated and slidably provided with a second protective cover (35), and the upper end and the lower end of the circumference surface of the second protective cover (35) are fixedly provided with fixed blocks (34).

5. A coiled tubing sealing apparatus according to claim 4, wherein: the right side ends of the two fixing blocks (34) are fixedly provided with a latch plate (33).

6. A coiled tubing sealing apparatus according to claim 5, wherein: the two latch plates (33) are respectively movably sleeved in rectangular through holes formed in the two rectangular blocks (32).