Anti-corrosion well oil pipe structure

Abstract

The utility model discloses an anti-corrosion well oil pipe structure which comprises an oil pipe body, the oil pipe body comprises an inner pipe, an inner anti-corrosion oil pipe is fixedly arranged on the outer side of the inner pipe, and an outer anti-corrosion oil pipe is fixedly arranged on the outer side of the inner anti-corrosion oil pipe. The outer side of the outer anti-corrosion oil pipe is fixedly connected with an anti-corrosion coupling and an anti-corrosion lower connector through a plurality of sealing pieces, the inner anti-corrosion oil pipe and the outer anti-corrosion wear-resistant sleeve are arranged on the basis of the inner pipe, and the anti-corrosion coupling and the anti-corrosion lower connector are arranged on the outer side of the outer anti-corrosion wear-resistant sleeve. The oil pipe and the oil pipe are highly sealed through the sealing piece and the sealing filler, so that the corrosion resistance of the oil pipe can be greatly improved; and the buffer plate and the spring are arranged in the inner pipe, so that the effect of buffering fluid can be achieved, and the wear resistance of the oil pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water well oil pipes, in particular to an anti-corrosion water well oil pipe structure. Background Art

[0002] In oil production, the mineralization degree of wastewater in injection wells is high, which causes serious corrosion to the oil pipes. Therefore, the corrosion resistance of the oil pipes is particularly important. At present, for the anti-corrosion design of oil pipes, in addition to the modification of the pipe body itself, casing is usually added for protection. However, this anti-corrosion structural design is still relatively simple and cannot be used for a long time in the sewage environment of water injection wells. Therefore, it is necessary to provide an anti-corrosion water well oil pipe structure. Utility Model Content

[0003] The utility model aims to provide an anti-corrosion water well oil pipe structure to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-corrosion water well oil pipe structure, including an oil pipe body, the oil pipe body including an inner pipe, an inner anti-corrosion oil pipe is fixedly provided on the outer side of the inner pipe, an outer anti-corrosion oil pipe is fixedly provided on the outer side of the inner anti-corrosion oil pipe, and the outer side of the outer anti-corrosion oil pipe is fixedly connected with an anti-corrosion coupling and an anti-corrosion lower joint through multiple sealing members.

[0005] In one example, sealing fillers are filled between the outer side of the external anti-corrosion oil pipe and the anti-corrosion coupling and the anti-corrosion lower joint.

[0006] In one example, the anti-corrosion coupling and the anti-corrosion lower joint are respectively sleeved on two ends of the oil pipe body.

[0007] In one example, a buffer plate is provided on the inner ring of the inner tube, and a plurality of buffer springs are fixedly provided on the outer side of the buffer plate. The buffer springs are embedded in through grooves formed on the inner ring of the inner tube.

[0008] The utility model provides an inner anti-corrosion oil pipe and an outer anti-corrosion wear-resistant sleeve on the basis of an inner pipe, and an anti-corrosion coupling and an anti-corrosion lower joint are provided on the outer side of the outer anti-corrosion wear-resistant sleeve, and the two are highly sealed by a sealing member and a sealing filler, thereby greatly improving the anti-corrosion performance of the oil pipe;

[0009] By arranging a buffer plate and a spring inside the inner tube, a buffering fluid can be provided, thereby improving the wear resistance of the oil pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is one of the schematic diagrams of the structure of the utility model;

[0011] Figure 2 This is the second structural diagram of the utility model;

[0012] Figure 3 The utility model is located in Figure 2 Schematic diagram of the enlarged structure at point A.

[0013] In the figure: 1. anti-corrosion coupling; 2. inner anti-corrosion oil pipe; 3. outer anti-corrosion wear-resistant sleeve; 4. sealing element; 5. anti-corrosion lower joint; 6. oil pipe body; 7. inner pipe; 8. buffer plate; 9. buffer spring; 10. through groove. DETAILED DESCRIPTION

[0014] 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 in 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.

[0015] The utility model provides Figure 1-3 The shown anti-corrosion water well oil pipe structure includes an oil pipe body 6, the oil pipe body 6 includes an inner pipe 7, an inner anti-corrosion oil pipe 2 is fixedly provided on the outer side of the inner pipe 7, an outer anti-corrosion oil pipe 3 is fixedly provided on the outer side of the inner anti-corrosion oil pipe 2, an anti-corrosion coupling 1 and an anti-corrosion lower joint 5 are fixedly connected to the outer side of the outer anti-corrosion oil pipe 3 through multiple sealing members 4, sealing fillers are filled between the outer side of the outer anti-corrosion oil pipe 3 and the anti-corrosion coupling 1 and the anti-corrosion lower joint 5, and the anti-corrosion coupling 1 and the anti-corrosion lower joint 5 are respectively sleeved on the two ends of the oil pipe body 6.

[0016] The inner ring of the inner tube 7 is provided with a buffer plate 8 , and a plurality of buffer springs 9 are fixedly provided on the outer side of the buffer plate 8 . The buffer springs 9 are embedded in through grooves 10 provided in the inner ring of the inner tube 7 .

[0017] The working principle of the utility model is as follows: an inner anti-corrosion oil pipe 2 and an outer anti-corrosion wear-resistant sleeve 3 are arranged on the basis of an inner pipe 7; the inner anti-corrosion oil pipe 2 and the outer anti-corrosion wear-resistant sleeve 3 can play a first-layer anti-corrosion effect, and an anti-corrosion coupling 1 and an anti-corrosion lower joint 5 are arranged on the outside of the outer anti-corrosion wear-resistant sleeve, and the two are highly sealed by sealing members and sealing fillers, so that the anti-corrosion coupling 1 and the anti-corrosion lower joint 5 can play a second-layer anti-corrosion effect, thereby greatly improving the anti-corrosion performance of the oil pipe; by arranging a buffer plate 8 and a buffer spring 9 inside the inner pipe, the pressure and impact force generated by the fluid can be slowly released, thereby improving the wear resistance of the oil pipe.

[0018] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The standard parts used in the utility model can all be purchased from the market, and the special-shaped parts can all be customized according to the description and the drawings.

[0020] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant water well oil pipe structure, comprising an oil pipe body (6), characterized in that: The oil pipe body (6) comprises an inner pipe (7), an inner anti-corrosion oil pipe (2) is fixedly provided on the outer side of the inner pipe (7), an outer anti-corrosion oil pipe (3) is fixedly provided on the outer side of the inner anti-corrosion oil pipe (2), and an anti-corrosion coupling (1) and an anti-corrosion lower joint (5) are fixedly connected on the outer side of the outer anti-corrosion oil pipe (3) via a plurality of sealing members (4).

2. The anti-corrosion water well oil pipe structure according to claim 1, characterized in that: Sealing fillers are filled between the outer side of the external anti-corrosion oil pipe (3) and the anti-corrosion coupling (1) and the anti-corrosion lower joint (5).

3. The anti-corrosion water well oil pipe structure according to claim 1, characterized in that: The anti-corrosion coupling (1) and the anti-corrosion lower joint (5) are respectively sleeved on two ends of the oil pipe body (6).

4. The anti-corrosion water well oil pipe structure according to claim 1, characterized in that: The inner ring of the inner tube (7) is provided with a buffer plate (8), and a plurality of buffer springs (9) are fixedly provided on the outer side of the buffer plate (8). The buffer springs (9) are embedded in through grooves (10) provided in the inner ring of the inner tube (7).

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