CN217001794U

CN217001794U - Non-deformable's anticorrosive screen pipe in oil field

Info

Publication number: CN217001794U
Application number: CN202220477566.3U
Authority: CN
Inventors: 黄明庆; 周旺; 王晓燕
Original assignee: Daqing Xinlu Drilling And Production Equipment Co ltd
Current assignee: Daqing Xinlu Drilling And Production Equipment Co ltd
Priority date: 2022-03-06
Filing date: 2022-03-06
Publication date: 2022-07-19
Anticipated expiration: 2032-03-06

Abstract

The utility model relates to the technical field of oilfield well completion, and discloses a non-deformable oilfield anticorrosion sieve tube which comprises a sieve tube I, wherein the lower end of the sieve tube I is connected with a sieve tube II through a connecting piece, reinforcing rings are uniformly distributed on the peripheries of the sieve tube I and the sieve tube II, reinforcing ribs are uniformly distributed on the inner peripheries of the sieve tube I and the sieve tube II, a wear-resistant layer is arranged on the outer side of a pipeline body, an anticorrosion layer is arranged inside the pipeline body, external thread sleeves are fixedly connected to the upper end and the lower end of the pipeline body, a limiting ring is fixedly connected to the middle of the inner side wall of the connecting ring, a first sealing ring is fixedly connected to the lower end of the limiting ring, and a second sealing ring is fixedly connected to the upper end of the limiting ring. According to the sieve tube, the strength of the sieve tube can be enhanced, the sieve tube is not easy to deform and is convenient to go into a well, the corrosion resistance and the wear resistance of the sieve tube are enhanced, and the service life of the sieve tube is prolonged.

Description

Non-deformable's anticorrosive screen pipe in oil field

Technical Field

The utility model relates to the technical field of oilfield well completion, in particular to a non-deformable oilfield corrosion-resistant sieve tube.

Background

In the process of petroleum drilling, in order to prevent drilling fluid from leaking into a stratum, solid-phase particles, polymers and other substances in the drilling fluid form mud cakes on a well wall to prevent free water of the drilling fluid from entering the stratum, but after the drilling is finished, if the mud cakes cannot be effectively removed, rock pores on the well wall are blocked, the permeability of a reservoir is reduced, the flow resistance of oil and gas is increased, and the yield of the oil and gas is reduced.

The existing oil field sieve tube mainly has the following two defects that the sieve tube is easy to deform in the using process, so that the sieve tube cannot finish the well descending due to the deformation of the sieve tube in the well descending process, and the sieve tube does not have an anti-corrosion function, so that the service life of the sieve tube is shortened.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a non-deformable oil field corrosion-resistant sieve tube.

In order to achieve the purpose, the utility model adopts the following technical scheme: the non-deformable oil field anticorrosion sieve tube comprises a sieve tube I, wherein the lower end of the sieve tube I is connected with a sieve tube II through a connecting piece, reinforcing rings are uniformly distributed on the outer peripheries of the first sieve tube and the second sieve tube, reinforcing ribs are uniformly distributed on the inner peripheries of the first sieve tube and the second sieve tube, the sieve tube I and the sieve tube II respectively comprise sieve pores, a pipeline body, a wear-resistant layer, an anticorrosive layer and an external thread sleeve, the periphery of the pipeline body is uniformly distributed with sieve pores, the outer side of the pipeline body is provided with a wear-resistant layer, the pipeline body is internally provided with an anticorrosive layer, the upper end and the lower end of the pipeline body are fixedly connected with an external thread sleeve, the connecting piece comprises a connecting ring, a second sealing ring and a limiting ring, the middle part of the inner side wall of the connecting ring is fixedly connected with the limiting ring, the lower extreme fixedly connected with sealing washer one of spacing collar, the upper end fixedly connected with sealing washer two of spacing collar.

As a further description of the above technical solution:

the lower end of the sieve tube II is in threaded connection with a sieve tube end socket.

As a further description of the above technical solution:

the pipeline body is close to the equal threaded connection of external screw thread cover of one end in the inside upper and lower extreme of clamping ring mutually.

As a further description of the above technical solution:

and the periphery of the second sealing ring is fixedly connected to the middle upper part of the inner side wall of the connecting ring.

As a further description of the above technical solution:

the periphery of the first sealing ring is fixedly connected to the middle lower portion of the inner side wall of the connecting ring.

As a further description of the above technical solution:

the first sealing ring and the second sealing ring are the same in size.

As a further description of the above technical solution:

the outer diameter of the connecting piece is the same as that of the pipeline body.

The utility model has the following beneficial effects:

1. according to the sieve tube, the reinforcing rings are uniformly distributed on the peripheries of the sieve tube I and the sieve tube II, and the reinforcing ribs are uniformly distributed in the sieve tube I and the sieve tube II, so that the strength of the sieve tube can be enhanced, the sieve tube is not easy to deform, and the sieve tube is convenient to go into a well.

2. According to the sieve tube, the wear-resistant layer is arranged on the outer side of the pipeline body, and the anti-corrosion layer is arranged on the inner side of the pipeline body, so that the anti-corrosion performance and the wear resistance of the sieve tube are enhanced, and the service life of the sieve tube is prolonged.

Drawings

FIG. 1 is a perspective view of a non-deformable oil field corrosion-resistant screen pipe according to the present invention;

FIG. 2 is a front view of the inner structure of the anti-corrosion screen pipe for oil field, which is not easy to deform;

fig. 3 is an enlarged view of a portion a in fig. 2.

Illustration of the drawings:

1. a first sieve tube; 2. a connecting member; 3. a screen pipe II; 4. a reinforcement ring; 5. reinforcing ribs; 6. the end of the sieve tube; 7. screening holes; 8. a pipe body; 9. a wear layer; 10. an anticorrosive layer; 11. a connecting ring; 12. a first sealing ring; 13. a second sealing ring; 14. a limiting ring; 15. and an external thread sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, one embodiment provided by the present invention: a non-deformable oil field anticorrosion sieve tube comprises a sieve tube 1, the lower end of the sieve tube 1 is connected with a sieve tube 3 through a connecting piece 2, reinforcing rings 4 are uniformly distributed on the peripheries of the sieve tube 1 and the sieve tube 3, reinforcing ribs 5 are uniformly distributed on the inner peripheries of the sieve tube 1 and the sieve tube 3, the reinforcing rings 4 are uniformly distributed on the peripheries of the sieve tube 1 and the sieve tube 3, the reinforcing ribs 5 are uniformly distributed inside the sieve tube, the strength of the sieve tube can be enhanced, the sieve tube is not easy to deform, the sieve tube 1 and the sieve tube 3 respectively comprise sieve pores 7, a pipeline body 8, an abrasion-resistant layer 9, an anticorrosion layer 10 and an external thread sleeve 15, the sieve pores 7 are uniformly distributed on the periphery of the pipeline body 8, the abrasion-resistant layer 9 is arranged on the outer side of the pipeline body 8, the abrasion-resistant layer 9 is a galvanized material layer, the abrasion resistance of the pipeline body 8 is enhanced, the anticorrosion layer 10 is arranged inside the pipeline body 8, the corrosion-resistant layer 10 is an ultra-high molecular weight polyethylene coating layer, has the advantages of low friction coefficient, self lubrication, adhesion resistance and no scale formation, and ensures that the pipeline body 8 has corrosion resistance, the upper end and the lower end of the pipeline body 8 are fixedly connected with an external thread sleeve 15, the connecting piece 2 comprises a connecting ring 11, a sealing ring two 13 and a limiting ring 14, the middle part of the inner side wall of the connecting ring 11 is fixedly connected with the limiting ring 14, the lower end of the limiting ring 14 is fixedly connected with a sealing ring one 12, the upper end of the limiting ring 14 is fixedly connected with the sealing ring two 13, the lower end of the screen pipe one 1 is provided with the connecting piece 2, the lower end of the connecting piece 2 is provided with the screen pipe two 3, the lower end 6 of the screen pipe two 3 is provided for well descending, the corrosion resistance and the wear resistance of the screen pipe are enhanced by arranging the wear-resistant layer 9 on the outer side of the pipeline body 8 and the corrosion-resistant layer 10 on the inner side of the pipeline body 8, the service life of the sieve tube is prolonged.

The lower end of the sieve tube II 3 is in threaded connection with a sieve tube end socket 6, the outer thread sleeves 15 close to one end of the pipeline body 8 are in threaded connection with the upper end and the lower end inside the connecting ring 11 and used for connecting the sieve tube I1 and the sieve tube II 3, the outer peripheries of the sealing rings II 13 are fixedly connected to the middle upper portion of the inner side wall of the connecting ring 11, the outer peripheries of the sealing rings I12 are fixedly connected to the middle lower portion of the inner side wall of the connecting ring 11, the positions of the sealing rings I12 and II 13 are fixed, the sizes of the sealing rings I12 and II 13 are the same, and the outer diameter of the connecting piece 2 is the same as that of the pipeline body 8.

The working principle is as follows: firstly, reinforcing rings 4 are uniformly distributed on the peripheries of a first sieve pipe 1 and a second sieve pipe 3, reinforcing ribs 5 are uniformly distributed inside the first sieve pipe 1 and the second sieve pipe 3, the strength of the sieve pipe can be enhanced, the sieve pipe is not prone to deformation and convenient to go into a well, a connecting piece 2 is installed at the lower end of the first sieve pipe 1, the second sieve pipe 3 is installed at the lower end of the connecting piece 2, a sieve pipe end 6 is installed at the lower end of the second sieve pipe 3, the sieve pipe can go into the well, a wear-resistant layer 9 is arranged on the outer side of a pipeline body 8, and an anti-corrosion layer 10 is arranged on the inner side of the pipeline body 8, so that the anti-corrosion performance and the wear resistance of the sieve pipe are enhanced, and the service life of the sieve pipe is prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions and improvements to part of the technical features of the foregoing embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a non-deformable's anticorrosive screen pipe in oil field, includes screen pipe (1), its characterized in that: the sieve tube is characterized in that the lower end of the sieve tube I (1) is connected with a sieve tube II (3) through a connecting piece (2), reinforcing rings (4) are uniformly distributed on the peripheries of the sieve tube I (1) and the sieve tube II (3), reinforcing ribs (5) are uniformly distributed on the inner peripheries of the sieve tube I (1) and the sieve tube II (3), the sieve tube I (1) and the sieve tube II (3) comprise sieve holes (7), a pipeline body (8), a wear-resistant layer (9), an anticorrosive layer (10) and an external thread sleeve (15), the sieve holes (7) are uniformly distributed on the periphery of the pipeline body (8), the outer side of the pipeline body (8) is provided with the wear-resistant layer (9), the inside of the pipeline body (8) is provided with the anticorrosive layer (10), the upper end and the lower end of the pipeline body (8) are fixedly connected with the external thread sleeve (15), and the connecting piece (2) comprises a connecting ring (11), Sealing washer two (13), sealing washer two (13) and spacing collar (14), inside wall middle part fixedly connected with spacing collar (14) of connecting collar (11), the lower extreme fixedly connected with sealing washer one (12) of spacing collar (14), the upper end fixedly connected with sealing washer two (13) of spacing collar (14).

2. The corrosion-resistant screen pipe for oil field of claim 1, which is not easy to deform, and is characterized in that: the lower end of the sieve tube II (3) is in threaded connection with a sieve tube end socket (6).

3. The corrosion-resistant screen pipe for oil field of claim 1, which is not easy to deform, and is characterized in that: the pipeline body (8) is close to the upper end and the lower end of the outer thread sleeve (15) at one end and is in threaded connection with the inner part of the connecting ring (11).

4. The corrosion-resistant screen pipe for oil field of claim 1, which is not easy to deform, and is characterized in that: the periphery of the second sealing ring (13) is fixedly connected to the middle upper part of the inner side wall of the connecting ring (11).

5. The anti-corrosion screen pipe for oil field not easy to deform as claimed in claim 1, wherein: the periphery of the first sealing ring (12) is fixedly connected to the middle lower portion of the inner side wall of the connecting ring (11).

6. The corrosion-resistant screen pipe for oil field of claim 1, which is not easy to deform, and is characterized in that: the first sealing ring (12) and the second sealing ring (13) are the same in size.

7. The corrosion-resistant screen pipe for oil field of claim 1, which is not easy to deform, and is characterized in that: the outer diameter of the connecting piece (2) is the same as that of the pipeline body (8).