CN220133918U

CN220133918U - Oil pipe centralizer

Info

Publication number: CN220133918U
Application number: CN202321675663.4U
Authority: CN
Inventors: 朱勇
Original assignee: Beijing Shengyue Petroleum Technology Co ltd
Current assignee: Beijing Shengyue Petroleum Technology Co ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-12-05
Anticipated expiration: 2033-06-29

Abstract

The utility model discloses an oil pipe centralizer, and belongs to the technical field of petroleum equipment. The method comprises the following steps: the first semicircular tube body 1 and the second semicircular tube body 2, the first semicircular tube body 1 comprises a first inner tube 3, the second semicircular tube body 2 comprises a second inner tube 4, a plurality of dovetail grooves 33 are formed in the first inner tube 3, a plurality of dovetail convex structures 43 are arranged on the second inner tube 4, and the dovetail grooves 33 and the dovetail convex structures 43 are mutually staggered and meshed to be matched with each other for use, so that the first semicircular tube body 1 and the second semicircular tube body 2 are mutually buckled to form a cylindrical tube body. The utility model protects the oil pipe and achieves the effects of convenient installation and better stability; the protection sleeve is arranged outside the cylindrical pipe body to prevent the pipe body from being corroded and damaged, and the spring is arranged to enable the centralizer to be capable of reducing the outer diameter by extrusion when the centralizer is deformed into the sleeve, so that the oil pipe can be smoothly lifted out.

Description

Oil pipe centralizer

Technical Field

The utility model relates to the technical field of petroleum equipment, in particular to an oil pipe centralizer.

Background

In the development process of oil fields, the depth of oil wells is continuously increased with the deep development. Some oil wells are thousands of meters deep, and some become inclined or horizontal wells. When in workover, the oil pipe is lifted out from a deep well, an inclined well or a horizontal well, the outer wall of the oil pipe is easily contacted with the inner wall of the sleeve, friction is generated, and the oil pipe and the sleeve are easily damaged by the friction. The oil pipe is damaged and needs to be replaced, so that the fund investment of the oil well can be increased; the damage of the casing causes oil leakage of the oil well and affects the use, even the whole oil well is scrapped, and huge loss is caused to the economy of the oil field; the oil pipe centralizer can enable an underground oil pipe to be positioned in the middle of the casing, so that friction between the casing and the oil pipe is prevented, and the oil pipe is further protected from being damaged.

The most common use of daily oil pipe centralizer is screw thread formula centralizer, it can protect interior oil pipe in the position centering in the well, and reduce the friction loss of oil pipe and intraductal wall, increase of service life, current oil pipe centralizer, it adopts the cover to or the more of buckled structure, there is more and the inconvenient problem of installation of spare part, the sleeve pipe can produce bigger deformation at the operation in-process in the pit simultaneously, especially after the operation such as steam injection, stew well, block oil pipe centralizer easily, influence oil pipe and normally play, consequently, need a novel oil pipe centralizer.

Disclosure of Invention

The object of the present utility model is to solve the above-mentioned problems of the prior art by providing a tubing centralizer that is easy to install and has an outer diameter that can be shortened under pressure.

In order to achieve the purpose, the utility model discloses an oil pipe centralizer, which comprises the following specific technical scheme:

a tubing centralizer, the tubing centralizer comprising:

the first semicircle tube body 1, the first semicircle tube body 1 includes first inner tube 3, first inner tube 3 is annular and includes: the first exposed section 31 and the first wrapping section 32, wherein the first exposed section 31 is sequentially provided with a plurality of dovetail grooves 33 along the vertical direction, and one side of the first wrapping section 32, which is far away from the first exposed section 31, is provided with a plurality of dovetail grooves 33 which are the same as those on the first exposed section 31;

the second semicircle tube body 2, the second semicircle tube body 2 includes: a second inner tube 4, the second inner tube 4 being annular and comprising: the second exposed section 41 and the second wrapping section 42, wherein the second exposed section 41 is sequentially provided with a plurality of dovetail convex structures 43 along the vertical direction, and one side of the second wrapping section 42 away from the second exposed section 41 is provided with a plurality of dovetail convex structures 43 which are the same as those on the second exposed section 41;

the dovetail grooves 33 on the first exposed section 31 and the dovetail convex structures 43 on the second wrapping section 42 are mutually staggered and engaged and matched, and the dovetail grooves 33 on the first wrapping section 32 and the dovetail convex structures 43 on the second exposed section 41 are mutually staggered and engaged and matched, so that the first semicircular pipe body 1 and the second semicircular pipe body 2 can be mutually buckled to form a cylindrical pipe body;

the outer sides of the first wrapping section 32 and the second wrapping section 42 are wrapped with a protective sleeve 5, and a spring 6 is arranged in the protective sleeve 5;

the first inner pipe 3 and the second inner pipe 4 are provided with pin holes 7, and the first semicircular pipe body 1 and the second semicircular pipe body 2 are fixed by matching with fixing pins 8.

Further, a plurality of protruding structures 9 are arranged outside the protective sleeve 5.

The beneficial effects of the utility model are that

Compared with the prior art, the utility model discloses an oil pipe centralizer, which has the following steps of

The beneficial effects are that:

according to the utility model, the dovetail grooves and the dovetail-shaped raised structures are respectively arranged on the first semicircular pipe body and the second semicircular pipe body, and the dovetail grooves and the dovetail-shaped raised structures are mutually staggered, meshed and matched to form the cylindrical pipe body, so that the oil pipe is protected, and meanwhile, the effects of convenience in installation and good stability are achieved; the protection sleeve is arranged outside the cylindrical pipe body to prevent the pipe body from being corroded and damaged, and the spring is arranged to enable the centralizer to be capable of reducing the outer diameter by extrusion when the centralizer is deformed into the sleeve, so that the oil pipe can be smoothly lifted out.

Drawings

FIG. 1 is a partial cross-sectional view of the centralizer provided by the utility model;

FIG. 2 is a schematic top view of the centralizer provided by the utility model;

fig. 3 is a schematic diagram of the assembled structure of the centralizer provided by the utility model.

In the drawing the view of the figure,

1. a first semicircular tube body; 2. the second semicircular tube body; 3. a first inner tube; 4. a second inner tube; 5. a protective sleeve; 6. a spring; 7. a pin hole; 8. a fixing pin; 9. a bump structure;

31. a first bare segment; 32. a first wrapping section; 33. a dovetail groove;

41. a second bare segment; 42. a second wrapping section; 43. dovetail-shaped convex structures.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

It should be noted that, the terms "upper", "bottom", "one side", and the like used herein indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, and are merely for convenience of description and simplification of description, and similar expressions are merely for the purpose of illustration, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model; furthermore, the terms "first segment," "second segment," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

See fig. 1-3;

a tubing centralizer, the tubing centralizer comprising:

the pin holes 7 are formed in the first inner pipe 3 and the second inner pipe 4, the first semicircular pipe body 1 and the second semicircular pipe body 2 are fixed by matching with the fixing pins 8, the positions of the pin holes 7 corresponding to the dovetail grooves 33 and the dovetail convex structures 43 are formed in the specific positions, and the staggered positions of the first semicircular pipe body 1 and the second semicircular pipe body 2 are fixed through the fixing pins 8.

In the use, make the first semicircle body 1 and the second semicircle body 2 each other from the side make a plurality of dovetail 33 and a plurality of dovetail protruding structure 43 mutually support and use, insert pinhole 7 through fixed pin 8 with the first semicircle body 1 with the second semicircle body 2 can, the dovetail shape has the self-locking function, can reduce the use number of connecting pieces such as fixed pin 8, saves resources and install quick simple.

Claims

1. An oil tube centralizer, comprising:

the first semicircle body (1), the first semicircle body (1) includes first inner tube (3), first inner tube (3) are annular and include: the device comprises a first exposed section (31) and a first wrapping section (32), wherein the first exposed section (31) is sequentially provided with a plurality of dovetail grooves (33) along the vertical direction, and one side, far away from the first exposed section (31), of the first wrapping section (32) is provided with a plurality of dovetail grooves (33) which are the same as those on the first exposed section (31);

the second semicircle body (2), the second semicircle body (2) includes: -a second inner tube (4), the second inner tube (4) being annular and comprising: the second exposed section (41) and the second wrapping section (42), wherein the second exposed section (41) is sequentially provided with a plurality of dovetail bulge structures (43) along the vertical direction, and one side, far away from the second exposed section (41), of the second wrapping section (42) is provided with a plurality of dovetail bulge structures (43) which are the same as those on the second exposed section (41);

the dovetail grooves (33) on the first exposed section (31) and the dovetail convex structures (43) on the second wrapping section (42) are mutually staggered and meshed for use, and the dovetail grooves (33) on the first wrapping section (32) and the dovetail convex structures (43) on the second exposed section (41) are mutually staggered and meshed for use, so that the first semicircular pipe body (1) and the second semicircular pipe body (2) can be mutually buckled to form a cylindrical pipe body;

the outer sides of the first wrapping section (32) and the second wrapping section (42) are wrapped with a protective sleeve (5), and a spring (6) is arranged in the protective sleeve (5);

the first inner pipe (3) and the second inner pipe (4) are provided with pin holes (7), and the first semicircular pipe body (1) and the second semicircular pipe body (2) are fixed by matching with fixing pins (8).

2. A tubing centralizer according to claim 1, characterized in that the outer part of the protective sleeve (5) is provided with a plurality of protruding structures (9).