Multifunctional cylindrical multi-edge alloy pen point

Abstract

The utility model relates to the technical field of well repair engineering, in particular to a multifunctional barrel type multi-edge alloy pen point which comprises a pen point body, one end of the pen point body is provided with an installation portion, the other end of the pen point body is fixedly provided with a first barrel body, the outer diameter of the first barrel body is smaller than that of the pen point body, the first barrel body is communicated with the pen point body, and the first barrel body is connected with the pen point body. A second barrel is fixedly arranged at the end, away from the pen point body, of the first barrel, the outer diameter of the second barrel is smaller than that of the first barrel, and the second barrel is communicated with the first barrel. A plurality of scraping blocks which are uniformly distributed are fixedly arranged at one end, far away from the mounting part, of the pen point body and the outer wall of the first barrel body, one end, far away from the pen point body, of the first barrel body and the outer wall of the second barrel body and one end, far away from the first barrel body, of the second barrel body; and the scraping block at one end, far away from the first cylinder body, of the second cylinder body is arranged in a triangular pyramid shape, so that multiple working procedures can be completed by one pipe column, and the working time and the working cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of well repair engineering, in particular to a multifunctional cylindrical multi-faceted alloy pen tip. Background Art

[0002] During oilfield operations, wellbore preparation is a fundamental process, including wellbore cleaning, sand flushing, ash plugging, gravel crushing, and descaling. Its purpose is to pre-treat the casing so that subsequent operations can proceed smoothly.

[0003] Disadvantages of existing technologies: When constructing wellbore treatments such as well cleaning, sand flushing, drilling ash plugs, gravel crushing, and descaling, each operation requires different processing tools to achieve the operation purpose, which increases both the operation time and the operation cost. Therefore, it is necessary to provide a device that can solve multiple wellbore treatment operations with one string. Utility Model Content

[0004] In view of this, the purpose of the present invention is to propose a multifunctional cylindrical multi-faceted alloy pen tip to solve the problem that when handling wellbore construction, each construction requires different processing tools to achieve the operation purpose, which increases the operation time and operation costs.

[0005] Based on the above-mentioned purpose, the utility model provides a multifunctional cylindrical multi-faceted alloy pen tip, which is used for downhole wellbore casing pretreatment work, including a pen tip body, one end of the pen tip body is provided with a mounting portion, and the other end is fixedly provided with a first cylinder, the first cylinder and the pen tip body are arranged coaxially, the outer diameter of the first cylinder is smaller than the outer diameter of the pen tip body, the first cylinder is connected to the pen tip body, the end of the first cylinder away from the pen tip body is fixedly provided with a second cylinder, the second cylinder is arranged coaxially with the first cylinder, the outer diameter of the second cylinder is smaller than the outer diameter of the first cylinder, and the second cylinder is connected to the first cylinder, the end of the pen tip body away from the mounting portion and the outer wall of the first cylinder, the end of the first cylinder away from the pen tip body and the outer wall of the second cylinder, and the end of the second cylinder away from the first cylinder are all fixed with a plurality of evenly distributed scraping blocks, and the scraping blocks on the end of the second cylinder away from the first cylinder are arranged in a triangular pyramid shape.

[0006] Preferably, the installation portion is one of a threaded groove and a clamping groove.

[0007] Preferably, the scraper block is a multi-edge structure with more than 3 edges.

[0008] Preferably, the angle between the scraper block and the pen tip body is in the range of 30-50 degrees.

[0009] Preferably, the surface of the scraper block is inlaid with a plurality of hard alloy particles.

[0010] Preferably, the maximum outer diameter of the scraper block is smaller than the maximum outer diameter of the pen tip body.

[0011] Beneficial effects of the utility model:

[0012] 1. It enables multiple processes to be completed in one trip, reducing operation time and cost;

[0013] 2. Simple structure and high safety;

[0014] 3. Effectively protect the inner wall of the casing to avoid internal damage to the casing. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the planar structure of the pen tip body of an embodiment of the present invention, at one end away from the mounting portion.

[0018] The following are marked in the figure:

[0019] 1. Pen tip body; 2. Mounting part; 3. First cylinder; 4. Second cylinder; 5. Scraper. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0022] like Figure 1 and Figure 2 As shown, a multifunctional cylindrical multi-faceted alloy pen tip is used for downhole wellbore casing pretreatment work, including a pen tip body 1, one end of the pen tip body 1 is provided with a mounting portion 2, and the other end is fixedly provided with a first cylinder 3, the first cylinder 3 and the pen tip body 1 are coaxially arranged, the outer diameter of the first cylinder 3 is smaller than the outer diameter of the pen tip body 1, the first cylinder 3 is communicated with the pen tip body 1, the end of the first cylinder 3 away from the pen tip body 1 is fixedly provided with a second cylinder 4, the second cylinder 4 is coaxially arranged with the first cylinder 3, the outer diameter of the second cylinder 4 is smaller than the outer diameter of the first cylinder 3, and the second cylinder 4 is communicated with the first cylinder 3, the end of the pen tip body 1 away from the mounting portion 2 and the outer wall of the first cylinder 3, the end of the first cylinder 3 away from the pen tip body 1 and the outer wall of the second cylinder 4, and the end of the second cylinder 4 away from the first cylinder 3 are all fixed with a plurality of evenly distributed scraping blocks 5, and the scraping blocks 5 on the end of the second cylinder 4 away from the first cylinder 3 are arranged in a triangular pyramid shape.

[0023] For example, through the scraper block 5 on the second cylinder 4, the scraper block 5 between the second cylinder 4 and the first cylinder 3, and the scraper block 5 on the first cylinder 3 and the pen tip body 1, and in conjunction with the connecting arrangement between the pen tip body 1, the second cylinder 4 and the first cylinder 3, the wellbore cleaning, sand flushing, ash plug drilling, gravel crushing and scale removal work are realized, and multiple processes are completed in one trip of the tubing, reducing the operation time and operation cost, effectively protecting the inner wall of the casing, and avoiding damage to the inside of the casing caused by frequent replacement of processing tools.

[0024] As an optional embodiment, the mounting portion 2 is one of a threaded groove and a clamping groove.

[0025] As an optional embodiment, the scraping block 5 is a multi-edge structure with more than 3 edges.

[0026] As an optional embodiment, the angle between the scraper 5 and the pen tip body 1 is in the range of 30-50 degrees.

[0027] As an optional embodiment, the surface of the scraper block 5 is inlaid with a plurality of cemented carbide particles.

[0028] As an optional embodiment, the maximum outer diameter of the scraper block 5 is smaller than the maximum outer diameter of the nib body 1 , so as to prevent the scraper block 5 from damaging the sleeve.

[0029] Those skilled in the art will understand that the discussion of any of the above embodiments is merely illustrative and is not intended to limit the scope of the present invention to these examples. Within the spirit and principles of the present invention, the technical features of the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and many other variations exist for the various aspects of the present invention described above, which are not provided in detail for the sake of clarity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multifunctional cylindrical multi-faceted alloy pen tip, used for underground wellbore casing pretreatment work, comprising a pen tip body (1), characterized in that: One end of the pen tip body (1) is provided with a mounting portion (2), and the other end is fixedly provided with a first cylinder (3), the first cylinder (3) and the pen tip body (1) are arranged coaxially, the outer diameter of the first cylinder (3) is smaller than the outer diameter of the pen tip body (1), the first cylinder (3) is connected to the pen tip body (1), and the end of the first cylinder (3) away from the pen tip body (1) is fixedly provided with a second cylinder (4), the second cylinder (4) is arranged coaxially with the first cylinder (3), and the second cylinder (4) The outer diameter of the second cylinder (4) is smaller than the outer diameter of the first cylinder (3), the second cylinder (4) is connected to the first cylinder (3), the end of the pen tip body (1) away from the mounting portion (2) and the outer wall of the first cylinder (3), the end of the first cylinder (3) away from the pen tip body (1) and the outer wall of the second cylinder (4), and the end of the second cylinder (4) away from the first cylinder (3) are all fixed with a plurality of evenly distributed scrapers (5), and the scrapers (5) on the end of the second cylinder (4) away from the first cylinder (3) are arranged in a triangular pyramid shape; The angle between the scraper (5) and the pen tip body (1) is in the range of 30-50 degrees; The surface of the scraper (5) is inlaid with a plurality of hard alloy particles; The maximum outer diameter of the scraper block (5) is smaller than the maximum outer diameter of the pen tip body (1).

2. A multifunctional cylindrical polyhedral alloy pen tip according to claim 1, characterized in that: The mounting portion (2) is one of a threaded groove and a clamping groove.

3. The multifunctional cylindrical multi-faceted alloy pen tip according to claim 1, characterized in that: The scraper (5) is a multi-edge structure with more than three edges.

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