Wire passing centralizer

Abstract

The utility model relates to a wire-passing centralizer which comprises a wire-passing body, two ends of the wire-passing body are respectively and fixedly connected with a contact pin in a sealing mode, and the two contact pins are electrically connected. The wire passing body is sleeved with a centralizing ring, the lower end of the centralizing ring is limited through the wire passing body, the upper end of the wire passing body is in threaded connection with a first locking nut, the upper end of the centralizing ring is limited through the first locking nut, and the lower end of the wire passing body and the first locking nut are further used for being connected with a corresponding tubular column. When the centralizing ring is eroded, the first locking nut is taken down to replace a new centralizing ring, and compared with the overall replacement in the prior art, the replacement cost is saved, the replacement efficiency is improved, and the operation efficiency is correspondingly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil extraction tools, and particularly relates to a wire passing centralizer. Background Art

[0002] Existing rubber centralizers are divided into two types: wire passing centralizers and sleeve centralizers. Under the same conditions, the wire passing centralizer has a larger flow area and a smaller flow velocity. Therefore, the erosion on the centralizer is relatively small. However, the centralizer is still likely to be eroded. In the prior art, the rubber centralizing ribs of the centralizer are generally vulcanized to the skeleton. Therefore, after the centralizer is eroded, it can only be replaced as a whole, thus increasing the operation cost. Content of the Utility Model

[0003] In order to solve all or part of the above problems, the purpose of the utility model is to provide a wire passing centralizer. The wire passing centralizer of the utility model has the advantages of convenient replacement of the centralizing ring, saving operation time, improving operation efficiency and reducing replacement cost.

[0004] According to one aspect of the utility model, a wire passing centralizer is provided, which includes a wire passing body. Plug pins are hermetically and fixedly connected to both ends of the wire passing body, and are electrically connected between the two plug pins; a centralizing ring is sleeved on the wire passing body. The lower end of the centralizing ring is limited by the wire passing body, and a first locking nut is threadedly connected to the upper end of the wire passing body. The upper end of the centralizing ring is limited by the first locking nut. The lower end of the wire passing body and the first locking nut are also used for connecting to corresponding pipe strings.

[0005] Further, a through hole extending from the upper end to the lower end is formed in the wire passing body. Two plug pins are hermetically arranged in the through hole. A limiting ring is arranged in the through hole between the two plug pins. Compression nuts are respectively connected in the through hole above the upper end of the upper plug pin and in the through hole below the lower end of the lower plug pin. Each plug pin is fixed in the through hole through the compression nut and the limiting ring. The two plug pins are electrically connected by a cable arranged in the through hole. A perforation is respectively arranged on each compression nut.

[0006] Further, the limiting ring is fixedly arranged on the inner wall of the through hole.

[0007] Further, a limiting block is fixedly connected to the lower end of the wire passing body. A first slot extending downward from the upper end is formed in the limiting block; the lower end of the centralizing ring extends downward to be inserted into the first slot, and a second slot extending upward is formed in the lower end of the first locking nut. The upper end of the centralizing ring extends upward to be inserted into the second slot.

[0008] Further, the centralizer ring includes a plurality of centralizer blocks, each of the centralizer blocks includes a mating ring and a centralizer rib, the lower end of each mating ring extends downward to be inserted into the first slot, and the upper end of each mating ring extends upward to be inserted into the second slot; each of the centralizer ribs is fixedly arranged on the outer side of the corresponding mating ring, and each centralizer rib is used for cooperating with the external pipe string or the wellbore to play a centralizing role.

[0009] Further, the centralizer ring includes 4 centralizer blocks.

[0010] Further, rubber skeletons are respectively arranged between the centralizer ring and the wire-passing body, and between the centralizer ring and the first locking nut. A third slot is formed between each rubber skeleton and the wire-passing body, and the lower end and the upper end of each centralizer block respectively extend to be inserted into the corresponding third slot; the upper rubber skeleton extends upward to be inserted into the second slot, and the lower rubber skeleton extends downward to be inserted into the first slot.

[0011] Further, a sealing connection is provided between each rubber skeleton and the wire-passing body.

[0012] Further, each rubber skeleton is an annular structure formed by two semi-rings.

[0013] Further, a second locking nut is threadedly connected to the lower end of the wire-passing body. The second locking nut is hermetically connected to the wire-passing body and is used for connecting to the corresponding pipe string; the first locking nut is hermetically connected to the wire-passing body.

[0014] As can be seen from the above technical solutions, a wire-passing centralizer provided by the present utility model has the following beneficial effects:

[0015] The centralizer ring is limited between the wire-passing body and the first locking nut. Therefore, when the centralizer ring is eroded, the first locking nut can be removed to replace the new centralizer ring, which saves the replacement cost compared with the overall replacement of the prior art, improves the replacement efficiency, and correspondingly improves the operation efficiency.

[0016] The arrangement of the pins at both ends of the wire-passing body realizes the purpose of routing wires through the wire-passing body, and has the advantage of convenient wire routing; the centralizer has the advantage of a relatively large flow area.

[0017] Sealing grooves are designed between the wire-passing body and the first locking nut, between the wire-passing body and the second locking nut, and between the rubber skeleton and the wire-passing body, which can prevent the mud from being poured in and damaging the multi-core pins. Description of the Drawings

[0018] Figure 1The front view of a wire passing and straightening device according to an embodiment of the present invention;

[0019] Figure 2 It is Figure 1 the sectional view taken along the line A-A in

[0020] Figure 3 It is Figure 1 the sectional view taken along the line B-B in

[0021] In the figure, the reference numerals are: wire passing body 1, through hole 11, limiting block 12, straightening ring 2, straightening block 21, mating ring 211, straightening wing rib 212, first locking nut 3, second locking nut 4, rubber skeleton 5, pin 6, compression nut 7, perforation 71. Detailed implementation manners

[0022] In order to better understand the purpose, structure and function of the present invention, the following will make a further detailed description of a wire passing and straightening device of the present invention with reference to the accompanying drawings.

[0023] As Figure 1 shown, it shows a wire passing and straightening device according to an embodiment of the present invention, including a wire passing body 1. Pins 6 are hermetically and fixedly connected to both ends of the wire passing body 1, and are electrically connected between the two pins 6; a straightening ring 2 is sleeved on the wire passing body 1. The lower end of the straightening ring 2 is limited by the wire passing body 1, and the upper end of the wire passing body 1 is threadedly connected with a first locking nut 3. The upper end of the straightening ring 2 is limited by the first locking nut 3. The lower end of the wire passing body 1 and the first locking nut 3 are also used for connecting with corresponding pipe strings.

[0024] The wire passing and straightening device of this embodiment includes a wire passing body 1 and a straightening ring 2. The straightening ring 2 is limited between the wire passing body 1 and the first locking nut 3. Therefore, when the straightening ring 2 is eroded, the first locking nut 3 can be removed to replace a new straightening ring 2. This embodiment saves the replacement cost compared with the overall replacement in the prior art, and the replacement process can be realized in a relatively short time, that is, the replacement efficiency is improved, and correspondingly, the operation efficiency is improved.

[0025] The arrangement of the pins 6 at both ends of this embodiment realizes the purpose of routing through the wire passing body 1, and has the advantage of convenient routing; the wire passing and straightening device of this embodiment has the advantage of a relatively large flow area.

[0026] During specific installation, the lower end of the wire passing body 1 is connected to the pipe string below it, and the lower pin 6 is connected to the electrically connected part of the lower pipe string; the first locking nut 3 is connected to the pipe string above it, and the upper pin 6 is connected to the electrically connected part of the upper pipe string.

[0027] Among them, as Figures 2 - 3As shown in the figure, a through hole 11 extending from the upper end to the lower end is formed in the wire passing body 1. Two insertion pins 6 are hermetically arranged in the through hole 11. A limiting ring is arranged in the through hole 11 between the two insertion pins 6. Compression nuts 7 are respectively connected in the through hole 11 at the upper end of the upper insertion pin 6 and in the through hole 11 at the lower end of the lower insertion pin 6. Each insertion pin 6 is fixed in the through hole 11 through the compression nut 7 and the limiting ring. The two insertion pins 6 are electrically connected through a cable arranged in the through hole 11. Each compression nut 7 is respectively provided with a through hole 71.

[0028] In this embodiment, the limiting ring is arranged in the through hole 11 between the two insertion pins 6, and each insertion pin 6 is fixed in the through hole 11 through the compression nut 7 and the limiting ring. The compression nut 7 is in threaded connection with the corresponding through hole 11. This setting method of this embodiment has the advantage of convenient installation. Secondly, the two insertion pins 6 are electrically connected through a cable in the through hole 11, that is, in this embodiment, the wire passes through the through hole 11 on the wire passing body 1, which has the advantage of convenient wire routing. Thirdly, the setting of the through hole 71 on each compression nut 7 facilitates the electrical connection part on the corresponding pipe column to pass through the through hole 71 on the compression nut 7 and be electrically connected to the corresponding insertion pin 6.

[0029] Among them, the limiting ring of this embodiment is fixedly arranged on the inner wall of the through hole 11, as Figure 1 shown. As an alternative solution, the limiting ring can also be directly placed in the through hole 11 between the two insertion pins 6.

[0030] Among them, a limiting block 12 is fixedly connected to the lower end of the wire passing body 1. A first slot extending downward from the upper end is formed in the limiting block 12; the lower end of the centering ring 2 extends downward to be inserted into the first slot, and a second slot extending upward is formed at the lower end of the first locking nut 3. The upper end of the centering ring 2 extends upward to be inserted into the second slot.

[0031] In this embodiment, the lower end of the centering ring 2 is inserted into the first slot, and the upper end of the centering ring 2 is inserted into the second slot, so that the axial limit of the centering ring 2 is realized through the first slot and the second slot. An interference fit can be set between the centering ring 2 and the first slot, and between the centering ring 2 and the second slot as required.

[0032] Among them, the centering ring 2 includes a plurality of centering blocks 21. The plurality of centering blocks 21 form an annular structure. Each centering block 21 includes a mating ring 211 and a centering wing rib 212. The lower end of each mating ring 211 extends downward to be inserted into the first slot, and the upper end of each mating ring 211 extends upward to be inserted into the second slot; each centering wing rib 212 is respectively fixedly arranged on the outer side of the corresponding mating ring 211, and each centering wing rib 212 is used to cooperate with the pipe column or the well wall outside it to play a centering role.

[0033] In this embodiment, the centralizer ring 2 is arranged as an annular structure formed by a plurality of centralizer blocks 21, and each centralizer block 21 includes a mating ring 211 and a centralizer rib 212, so as to facilitate inserting the lower end of each mating ring 211 into the first slot and inserting the upper end of each mating ring 211 into the second slot. The centralizer rib 212 is used to cooperate with the external pipe string or wellbore to play a centralizing role. During specific implementation, for example, as Figure 3 shown, there are 4 centralizer blocks 21.

[0034] Wherein, rubber skeletons 5 are respectively arranged between the centralizer ring 2 and the wire-passing body 1, and between the centralizer ring 2 and the first locking nut 3. A third slot is formed between each rubber skeleton 5 and the wire-passing body 1. The lower end and the upper end of each centralizer block 21 respectively extend to be inserted into the corresponding third slot; the upper rubber skeleton 5 extends upward to be inserted into the second slot, and the lower rubber skeleton 5 extends downward to be inserted into the first slot.

[0035] Wherein, each rubber skeleton 5 and the wire-passing body 1 are in sealed connection. During specific implementation, for example, each rubber skeleton 5 is an annular structure formed by two half-rings, as Figure 3 shown.

[0036] Wherein, a second locking nut 4 is threadedly connected to the lower end of the wire-passing body 1. The second locking nut 4 is in sealed connection with the wire-passing body 1 and is used to connect with the corresponding pipe string; the first locking nut 3 is in sealed connection with the wire-passing body 1.

[0037] In this embodiment, both between the first locking nut 3 and the wire-passing body 1 and between the second locking nut 4 and the wire-passing body 1 are in sealed connection. Therefore, even if the seal fails at one end, it can be ensured that the other end is not grouted.

[0038] In this embodiment, the centralizer ring 2 is limited between the wire-passing body 1 and the first locking nut 3. Therefore, when the centralizer ring 2 is eroded, the first locking nut 3 can be removed to replace the new centralizer ring 2, which saves the replacement cost compared with the overall replacement in the prior art, improves the replacement efficiency, and correspondingly improves the operation efficiency.

[0039] In this embodiment, the setting of the pins 6 at both ends of the wire-passing body 1 realizes the purpose of routing wires through the wire-passing body 1, and has the advantage of convenient wire routing; the wire-passing centralizer of this embodiment has the advantage of a relatively large flow area.

[0040] In this embodiment, sealing grooves are designed between the wire-passing body 1 and the first locking nut 3, between the wire-passing body 1 and the second locking nut 4, and between the rubber skeleton 5 and the wire-passing body 1, which can prevent the grouted mud from damaging the multi-core pins 6.

[0041] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which this utility model belongs.

[0042] In addition, the terms "one", "two", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of this utility model, "a plurality of" means more than two unless otherwise specifically defined.

[0043] In this application, unless otherwise clearly specified and defined, the terms "install", "connect", "connection", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it; although this utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered by the scope of the claims and the description of this utility model. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. This utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wire passing and straightening device, characterized in that, It includes a wire-passing body, with pins hermetically and fixedly connected to both ends of the wire-passing body, and the two pins are electrically connected; a centering ring is sleeved on the wire-passing body, the lower end of the centering ring is limited by the wire-passing body, the upper end of the wire-passing body is threadedly connected with a first locking nut, and the upper end of the centering ring is limited by the first locking nut. The lower end of the wire-passing body and the first locking nut are also used for connecting with corresponding pipe columns.

2. The wire passing and straightening device according to claim 1, characterized in that, A through hole extending from the upper end to the lower end is formed in the wire-passing body. Two pins are hermetically arranged in the through hole. A limiting ring is arranged in the through hole between the two pins. Compression nuts are respectively connected in the through hole above the upper end of the upper pin and in the through hole below the lower end of the lower pin. Each pin is fixed in the through hole through the compression nut and the limiting ring. The two pins are electrically connected by a cable arranged in the through hole, and each compression nut is respectively provided with a through hole.

3. The wire passing and straightening device according to claim 2, characterized in that, The limiting ring is fixedly arranged on the inner wall of the through hole.

4. The wire passing and straightening device according to claim 1, characterized in that, A limiting block is fixedly connected to the lower end of the wire-passing body. A first slot extending downward from the upper end is formed in the limiting block; the lower end of the centering ring extends downward to be inserted into the first slot, and a second slot extending upward is formed in the lower end of the first locking nut, and the upper end of the centering ring extends upward to be inserted into the second slot.

5. The wire passing and straightening device according to claim 4, wherein The centering ring includes a plurality of centering blocks. Each centering block includes a fitting ring and a centering rib. The lower end of each fitting ring extends downward to be inserted into the first slot, and the upper end of each fitting ring extends upward to be inserted into the second slot; each centering rib is respectively fixedly arranged on the outer side of the corresponding fitting ring, and each centering rib is used for cooperating with an external pipe column or well wall to play a centering role.

6. The wire passing and straightening device according to claim 5, wherein The centering ring includes 4 centering blocks.

7. The wire passing and straightening device according to claim 5, characterized in that, Rubber skeletons are respectively arranged between the centering ring and the wire-passing body and between the centering ring and the first locking nut. A third slot is formed between each rubber skeleton and the wire-passing body. The lower end and the upper end of each centering block respectively extend to be inserted into the corresponding third slot; the upper rubber skeleton extends upward to be inserted into the second slot, and the lower rubber skeleton extends downward to be inserted into the first slot.

8. The wire passing and straightening device according to claim 7, characterized in that, Each rubber skeleton and the wire-passing body are hermetically connected.

9. The wire passing and straightening device according to claim 7, wherein, Each rubber skeleton is an annular structure formed by two semi-rings.

10. The wire-passing aligner according to claim 1, wherein, A second locking nut is threadedly connected to the lower end of the wire-passing body. The second locking nut is hermetically connected to the wire-passing body and is used for connecting with a corresponding pipe column; the first locking nut is hermetically connected to the wire-passing body.

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