CN214170466U

CN214170466U - Stable form oil casing pipe of high strength

Info

Publication number: CN214170466U
Application number: CN202022498399.4U
Authority: CN
Inventors: 张扬; 陶宏亮; 杨学松; 阚勇
Original assignee: Gaoyou Huaxing Petroleum Pipe Fittings Manufacturing Co ltd
Current assignee: Gaoyou Huaxing Petroleum Pipe Fittings Manufacturing Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-09-10
Anticipated expiration: 2030-11-03

Abstract

The utility model discloses a high-strength stable petroleum casing pipe in the technical field of petroleum casing pipes, which comprises a protective layer, one end of the protective layer is provided with a hoop connecting pipe, the inner wall of the hoop connecting pipe is provided with internal threads, and the other end of the protective layer is provided with an external thread matched with the internal thread, the inner wall of the protective layer is provided with a weather-resistant layer, the weather-resistant layer is arranged on the outer wall of the outer coating layer, the outer coating layer is arranged on the outer wall of the outer reinforcing layer, and through the arrangement of the protective layer, can play the roles of preventing the pipe body from rust prevention and corrosion, and by arranging the outer reinforcing layer, the graphite layer and the reinforcing rib layer, can effectively improve the strength of the pipe body, can further improve the strength of the pipe body by arranging the outer coating layer and the inner coating layer, through the effect of spring for the fixed plate drives antislip strip and the contact of the oil well wall of a well, can increase the friction of fixed plate and oil well wall of a well.

Description

Stable form oil casing pipe of high strength

Technical Field

The utility model relates to an oil casing technical field specifically is a stable form oil casing of high strength.

Background

The petroleum casing pipe is a steel pipe used for supporting the wall of a well of an oil well or a gas well so as to ensure the normal operation of the whole oil well after the drilling process and the well completion, and each well needs to use several layers of casing pipes according to different drilling depths and geological conditions.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stable form oil casing of high strength to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a stable form oil casing of high strength, includes the protective layer, the one end of protective layer is provided with connects the hoop pipe, connect be provided with the internal thread on the inner wall of hoop pipe, and the other end of protective layer be provided with internal thread assorted external screw thread, be provided with on the inner wall of protective layer and wait the layer, it sets up on the outer wall of outer dope layer to wait the layer, outer dope layer sets up on the outer wall of outer enhancement layer, outer enhancement layer sets up on the outer wall of body, be provided with interior enhancement layer on the inner wall of body, the outer wall of protective layer all is provided with all around and prevents shaking the subassembly.

Preferably, the protective layer comprises an electro-galvanizing layer connected with the weather-resistant layer, and an anti-corrosion layer is arranged on the outer wall of the electro-galvanizing layer.

Preferably, the inner reinforcing layer comprises a graphite layer connected to the inner wall of the pipe body, a reinforcing rib layer is arranged on the inner wall of the graphite layer, and an inner coating layer is arranged on the inner wall of the reinforcing rib layer.

Preferably, the anti-shaking assembly comprises a spring arranged on the outer wall of the anti-corrosion layer, a fixed plate is arranged on one side, away from the electro-galvanizing layer, of the spring, and anti-slip strips are evenly arranged on one side, away from the anti-corrosion layer, of the fixed plate.

Preferably, one side that the anticorrosive coating was kept away from to the fixed plate evenly distributed has the toper piece, and the one end that the anticorrosive coating was kept away from to the toper piece extends to the front side of antislip strip.

Preferably, the left end of the outer wall of the anticorrosive coating is connected with the coupling pipe, and the right end of the anticorrosive coating is connected with the external thread.

Preferably, the outer part of the anti-slip strip is uniformly provided with anti-slip lugs, and the anti-slip lugs are semicircular.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the protective layer can prevent the pipe body from being rusted and corroded, the outer reinforcing layer, the graphite layer and the reinforcing rib layer can effectively improve the strength of the pipe body, and the outer coating layer and the inner coating layer can further improve the strength of the pipe body;

2. through being provided with and preventing shaking the subassembly, through the effect of spring for the fixed plate drives antislip strip and the contact of the oil well wall of a well, can increase the friction of fixed plate and the oil well wall of a well, and during the toper piece injects the earth of the oil well wall of a well, can effectively reduce the body and rock, thereby improved the stability of body, avoided appearing the incident.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the structure of the tube body of the present invention.

In the figure: 1. a protective layer; 11. electroplating a zinc layer; 12. an anticorrosive layer; 2. connecting a hoop pipe; 3. an external thread; 4. a weatherable layer; 5. an outer coating layer; 6. a reinforcing layer is added; 7. a pipe body; 8. an inner reinforcing layer; 81. a graphite layer; 82. a reinforcing rib layer; 83. an inner coating layer; 9. an anti-sloshing assembly; 91. a spring; 92. a fixing plate; 93. and (4) an anti-slip strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a technical scheme: a high-strength stable petroleum casing pipe, please refer to fig. 1 and 2, which comprises a protective layer 1, wherein one end of the protective layer 1 is provided with a coupling pipe 2, the inner wall of the coupling pipe 2 is provided with internal threads, the other end of the protective layer 1 is provided with external threads 3 matched with the internal threads, a plurality of groups of pipe bodies 7 are conveniently spliced together through the coupling pipe 2 and the external threads 3, which belong to the inherent structure of the current petroleum casing pipe, and not described much, the inner wall of the protective layer 1 is provided with a weather-resistant layer 4, the weather-resistant layer 4 is arranged on the outer wall of an outer coating layer 5, the weather-resistant layer 4 is made of weather-resistant steel, so that the pipe bodies 7 have good weather resistance, the outer coating layer 5 is arranged on the outer wall of an outer reinforcing layer 6, the outer coating layer 5 and an inner coating layer 83 are LINE-X coatings, which can improve the strength of the pipe bodies 7, and the outer reinforcing layer 6 is arranged on the outer wall of the pipe bodies 7, outer reinforcement layer 6 is made through the titanium alloy, is provided with interior enhancement layer 8 on the inner wall of body 7, through outer reinforcement layer 6 and interior enhancement layer 8 for body 7 has higher intensity, and the outer wall of protective layer 1 all is provided with all around and prevents shaking subassembly 9.

Referring to fig. 1, the protective layer 1 includes an electro-galvanized layer 11 connected to the weather-resistant layer 4, an anti-corrosion layer 12 is disposed on an outer wall of the electro-galvanized layer 11, the electro-galvanized layer 11 enables the pipe body to have an anti-corrosion function, and the anti-corrosion layer 12 is coated with an anti-corrosion paint to prevent the pipe body 7 from being corroded.

Please refer to fig. 2, the inner reinforcing layer 8 includes a graphite layer 81 connected to the inner wall of the pipe body 7, the inner wall of the graphite layer 81 is provided with a reinforcing rib layer 82, reinforcing ribs are uniformly arranged inside the reinforcing rib layer 82, the overall strength of the pipe body 7 can be effectively improved through the graphite layer 81 and the reinforcing rib layer 82, the bearing capacity of the pipe body 7 is increased, an inner coating layer 83 is arranged on the inner wall of the reinforcing rib layer 82, and the inner wall of the inner coating layer 83 is coated with an epoxy resin paint layer, so that the effect of preventing the inner wall of the pipe body 7 from being corroded can be achieved.

Referring to fig. 1, the anti-shaking assembly 9 includes a spring 91 disposed on the outer wall of the anti-corrosion layer 12, a fixing plate 92 is disposed on one side of the spring 91 away from the electro-galvanizing layer 11, and anti-slip strips 93 are uniformly disposed on one side of the fixing plate 92 away from the anti-corrosion layer 12, so that the fixing plate 92 drives the anti-slip strips 93 to contact with the well wall, and friction between the fixing plate 92 and the well wall can be increased.

Referring to fig. 1, conical blocks are uniformly distributed on one side, away from the anti-corrosion layer 12, of the fixing plate 92, one end, away from the anti-corrosion layer 12, of each conical block extends to the front side of the corresponding anti-slip strip 93, and after the conical blocks are inserted into soil of the oil well wall, cement concrete is filled between the outer wall of the pipe body 7 and the oil well wall, so that shaking of the pipe body 7 can be effectively reduced through the anti-slip strips 93 and the conical blocks, the stability of the pipe body 7 is improved, and safety accidents are avoided.

Referring to fig. 1, the left end of the outer wall of the corrosion protection layer 12 is connected to the coupling pipe 2, and the right end of the corrosion protection layer 12 is connected to the external thread 3.

Referring to fig. 1, anti-slip bumps are uniformly arranged outside the anti-slip strips 93, and the anti-slip bumps are semicircular, so that friction between the fixing plate 92 and the wall of the oil well can be further increased.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A stable form oil casing of high strength, includes protective layer (1), its characterized in that: the one end of protective layer (1) is provided with connects hoop pipe (2), connect to be provided with the internal thread on the inner wall of hoop pipe (2), and the other end of protective layer (1) be provided with internal thread assorted external screw thread (3), be provided with on the inner wall of protective layer (1) and wait to wait layer (4), it sets up on the outer wall of overcoat layer (5) to wait layer (4), overcoat layer (5) set up on the outer wall of outer enhancement layer (6), outer enhancement layer (6) set up on the outer wall of body (7), be provided with interior enhancement layer (8) on the inner wall of body (7), the outer wall of protective layer (1) all is provided with around and prevents shaking subassembly (9).

2. The high strength stabilized petroleum casing according to claim 1, wherein: the protective layer (1) comprises an electro-galvanizing layer (11) connected with the weather-resistant layer (4), and an anti-corrosion layer (12) is arranged on the outer wall of the electro-galvanizing layer (11).

3. The high strength stabilized petroleum casing according to claim 1, wherein: interior enhancement layer (8) are including connecting graphite layer (81) on body (7) inner wall, the inner wall of graphite layer (81) is provided with strengthening rib layer (82), be provided with interior dope layer (83) on the inner wall of strengthening rib layer (82).

4. The high strength stabilized petroleum casing according to claim 2, wherein: the anti-shaking assembly (9) comprises a spring (91) arranged on the outer wall of the anti-corrosion layer (12), a fixing plate (92) is arranged on one side, away from the electro-galvanizing layer (11), of the spring (91), and anti-slip strips (93) are uniformly arranged on one side, away from the anti-corrosion layer (12), of the fixing plate (92).

5. The high strength stabilized petroleum casing according to claim 4, wherein: one side that the fixed plate (92) kept away from anticorrosive coating (12) evenly distributed has the toper piece, and the one end that the anticorrosive coating (12) was kept away from to the toper piece extends to the front side of antislip strip (93).

6. The high strength stabilized petroleum casing according to claim 2, wherein: the left end of the outer wall of the anticorrosive coating (12) is connected with the coupling pipe (2), and the right end of the anticorrosive coating (12) is connected with the external thread (3).

7. The high strength stabilized petroleum casing according to claim 4, wherein: the outer part of the anti-slip strip (93) is uniformly provided with anti-slip lugs, and the anti-slip lugs are semicircular.