Ball centralizer with high hardness

Abstract

The utility model discloses a ball centralizer with high hardness, which comprises a centralizer body, sleeve components, a flexible sleeve and a rigid sleeve, the sleeve components are arranged at two ends of the centralizer body, the flexible sleeve is arranged on the outer surface of the centralizer body, the rigid sleeve is arranged on one side of the flexible sleeve, and the rigid sleeve is arranged on the outer surface of the rigid sleeve. The centralizer is provided with the centralizing strips, the centralizing strips are arranged on the outer side surface of the shell, the centralizing strips are provided with the mounting grooves for mounting the balls, when the centralizer faces a high-hardness environment, a single flexible sleeve cannot work in the high-hardness environment, and after the centralizer is supported by the flexible sleeve, the rigid sleeve plays a role in rigid supporting on the centralizer; when the centralizer works, the situation that an oil pipe is bent due to a high-hardness environment is avoided, meanwhile, the contact time of the rigid sleeve and the high-hardness environment can be shortened through the flexible sleeve, the service life of the balls is prolonged, and the problem that the centralizer cannot be used in the high-hardness environment at present is solved.

Description

Technical Field

[0001] The utility model relates to a centralizer technology, in particular to a ball centralizer with high hardness. Background Art

[0002] The centralizer is also called the guide centralizer. The guide centralizer refers to the rigid and elastic centralizing frame installed on the outer surface of the casing to ensure that the lowered casing string is located in the center of the wellbore during oil and gas drilling.

[0003] Existing ball centralizers are usually rigid ball centralizers during use. After long-term use, the wear rate is high and it cannot be used in a high-hardness environment. In the face of a high-hardness environment, the rigid centralizer will experience a more violent collision, thereby reducing the service life of the centralizer.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related art, the utility model proposes a ball centralizer with high hardness to overcome the above technical problems existing in the existing related art.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A ball centralizer with high hardness comprises a centralizer body, a sleeve assembly, a flexible sleeve and a rigid sleeve. The sleeve assemblies are arranged at both ends of the centralizer body, the flexible sleeve is arranged on the outer surface of the centralizer body, and the rigid sleeve is arranged on one side of the flexible sleeve.

[0008] The flexible sleeve includes an upper tube, a braided belt and a lower tube. The upper tube is arranged on the outer surface of the centralizer body, one end of the braided belt is fixedly connected to the upper tube, and the other end of the braided belt is fixedly connected to the lower tube. The lower tube is arranged on the outer surface of the centralizer body.

[0009] The utility model further describes: the rigid sleeve includes an outer shell, a straightening bar and a ball bearing, the outer shell is arranged on the outer surface of the straightening device body, the straightening bar is arranged on the outer surface of the outer shell, the straightening bar is provided with a mounting groove, and the ball bearing is arranged in the mounting groove on the straightening bar.

[0010] The utility model further describes: the casing assembly includes a casing and a pulley, the casing is arranged at both ends of the centralizer body, a groove is arranged on the inner side of the casing, and the pulley is arranged in the groove on the inner side of the casing.

[0011] The utility model further illustrates that: outer tubes are arranged at both ends of the centralizer body, and a threaded sleeve is arranged on one side of the outer tube.

[0012] The utility model further illustrates that a threaded sleeve is arranged on the inner side of the sleeve, and one end of the sleeve is fixedly connected to the outer tube.

[0013] The beneficial effects of the utility model are as follows: by providing a braided belt, one end of the braided belt is fixedly connected to the upper tube, and the other end of the braided bag is fixedly connected to the lower tube. When the centralizer is working, the braided belt supports the external environment and reduces direct contact with the centralizer, thereby reducing the loss between the surface of the centralizer and the external environment, and at the same time can provide flexible support in the face of high hardness environments.

[0014] By providing a straightening bar, the straightening bar is arranged on the outer surface of the shell, and the straightening bar is provided with an installation groove for installing the ball. When facing a high hardness environment, a single flexible casing cannot meet the working requirements of the high hardness environment. After being supported by the flexible casing, the rigid casing provides rigid support for the straightening device, so that when the straightening device is working, the oil pipe will not bend due to the high hardness environment. At the same time, the flexible casing can reduce the contact time between the rigid casing and the high hardness environment, thereby extending the service life of the ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of a ball centralizer with high hardness according to an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of a flexible sleeve structure in a ball centralizer with high hardness according to an embodiment of the utility model;

[0018] Figure 3 It is a schematic structural diagram of a sleeve assembly in a ball centralizer with high hardness according to an embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of a rigid sleeve structure in a ball centralizer with high hardness according to an embodiment of the utility model.

[0020] In the figure:

[0021] 1. Centralizer body; 11. Outer tube; 12. Threaded sleeve; 2. Casing assembly; 21. Casing; 22. Pulley; 3. Flexible casing; 31. Upper tube; 32. Braided belt; 33. Lower tube; 4. Rigid casing; 41. Outer shell; 42. Centralizer bar; 43. Ball bearing. DETAILED DESCRIPTION

[0022] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] According to an embodiment of the utility model, a ball centralizer with high hardness is provided.

[0024] like Figure 1-4 As shown, the ball centralizer with high hardness according to the embodiment of the utility model comprises a centralizer body 1, a sleeve assembly 2, a flexible sleeve 3 and a rigid sleeve 4, the sleeve assembly 2 is arranged at both ends of the centralizer body 1, the flexible sleeve 3 is arranged on the outer surface of the centralizer body 1, and the rigid sleeve 4 is arranged on one side of the flexible sleeve 3;

[0025] The flexible sleeve 3 includes an upper tube 31, a braided belt 32 and a lower tube 33. The upper tube 31 is arranged on the outer surface of the centralizer body 1. One end of the braided belt 32 is fixedly connected to the upper tube 31, and the other end of the braided belt 32 is fixedly connected to the lower tube 33. The lower tube 33 is arranged on the outer surface of the centralizer body 1. One end of the braided belt 32 is fixedly connected to the upper tube 31, and the other end of the braided bag 32 is fixedly connected to the lower tube 33. When the centralizer is working, the braided belt 32 supports the external environment, reduces direct contact with the centralizer, thereby reducing the loss between the surface of the centralizer and the external environment, and can provide flexible support in the face of high hardness environment.

[0026] The rigid casing 4 includes an outer shell 41, a straightening bar 42 and a ball 43. The outer shell 41 is arranged on the outer surface of the straightening device body 1, the straightening bar 42 is arranged on the outer surface of the outer shell 41, a mounting groove is arranged on the straightening bar 42, and the ball 43 is arranged in the mounting groove on the straightening bar 42. The straightening bar 42 is arranged on the outer surface of the outer shell 41, and a mounting groove for installing the ball 43 is arranged on the straightening bar 42. When facing a high-hardness environment, a single flexible casing 3 cannot meet the work of the high-hardness environment. After being supported by the flexible casing 3, the rigid casing 4 plays a rigid support for the straightening device, so that when the straightening device is working, the oil pipe will not be bent due to the high-hardness environment. At the same time, the flexible casing 3 can reduce the contact time of the rigid casing 4 with the high-hardness environment and extend the service life of the ball 43.

[0027] The casing assembly 2 includes a casing 21 and a pulley 22. The casing 21 is arranged at both ends of the centralizer body 1. A groove is arranged on the inner side of the casing 21. The pulley 22 is arranged in the groove on the inner side of the casing 21. An outer tube 11 is arranged at both ends of the centralizer body 1. A threaded sleeve 12 is arranged on one side of the outer tube 11.

[0028] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0029] In actual application, one end of the braided belt 32 is fixedly connected to the upper tube 31, and the other end of the braided bag 32 is fixedly connected to the lower tube 33. When the centralizer is working, the braided belt 32 supports the external environment and reduces direct contact with the centralizer, thereby reducing the loss between the surface of the centralizer and the external environment. At the same time, it can play a flexible support in the face of a high hardness environment. The centralizer bar 42 is arranged on the outer surface of the outer shell 41, and a mounting groove for installing the ball 43 is provided on the centralizer bar 42. When facing a high hardness environment, a single flexible casing 3 cannot meet the work requirements of the high hardness environment. After being supported by the flexible casing 3, the rigid casing 4 plays a rigid support role for the centralizer, so that the centralizer will not cause the oil pipe to bend due to the high hardness environment when working. At the same time, the flexible casing 3 can reduce the contact time of the rigid casing 4 with the high hardness environment and extend the service life of the ball 43.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ball centralizer with high hardness, characterized in that: The centralizer comprises a centralizer body (1), a sleeve assembly (2), a flexible sleeve (3) and a rigid sleeve (4), wherein the sleeve assembly (2) is arranged at both ends of the centralizer body (1), the flexible sleeve (3) is arranged on the outer surface of the centralizer body (1), and the rigid sleeve (4) is arranged on one side of the flexible sleeve (3); The flexible sleeve (3) comprises an upper tube (31), a braided belt (32) and a lower tube (33); the upper tube (31) is arranged on the outer surface of the centralizer body (1); one end of the braided belt (32) is fixedly connected to the upper tube (31); the other end of the braided belt (32) is fixedly connected to the lower tube (33); and the lower tube (33) is arranged on the outer surface of the centralizer body (1).

2. A ball centralizer with high hardness according to claim 1, characterized in that: The rigid sleeve (4) comprises an outer shell (41), a straightening bar (42) and a ball (43); the outer shell (41) is arranged on the outer surface of the straightening device body (1); the straightening bar (42) is arranged on the outer surface of the outer shell (41); a mounting groove is arranged on the straightening bar (42); and the ball (43) is arranged in the mounting groove on the straightening bar (42).

3. The ball centralizer with high hardness according to claim 1, characterized in that: The casing assembly (2) comprises a casing (21) and a pulley (22); the casing (21) is arranged at both ends of the centralizer body (1); a groove is arranged on the inner side of the casing (21); and the pulley (22) is arranged in the groove on the inner side of the casing (21).

4. A ball centralizer with high hardness according to claim 1, characterized in that: Outer tubes (11) are provided at both ends of the centralizer body (1), and a threaded sleeve (12) is provided on one side of the outer tube (11).

5. The ball centralizer with high hardness according to claim 3, characterized in that: A threaded sleeve (12) is provided on the inner side of the sleeve (21), and one end of the sleeve (21) is fixedly connected to the outer tube (11).

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