CN111509354B - Wireless signal transmission antenna of while-drilling instrument - Google Patents
Wireless signal transmission antenna of while-drilling instrument Download PDFInfo
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- CN111509354B CN111509354B CN202010339260.7A CN202010339260A CN111509354B CN 111509354 B CN111509354 B CN 111509354B CN 202010339260 A CN202010339260 A CN 202010339260A CN 111509354 B CN111509354 B CN 111509354B
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- signal transmission
- wireless signal
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- transmission antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/005—Damping of vibrations; Means for reducing wind-induced forces
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Abstract
The invention discloses a wireless signal transmission antenna of a drilling instrument, which comprises an annular functional body, wherein a lead-out wire group is arranged on one side of the functional body and is connected with a control circuit board in a well following instrument. The invention relates to the field of petroleum exploration and development, and provides a wireless signal transmission antenna of a while-drilling instrument, which has the advantages of good shock resistance, wear resistance and pressure resistance, so that the antenna can be used for a longer time, a transmission signal is not influenced by shock, and the accuracy is high.
Description
Technical Field
The invention relates to the field of petroleum exploration and development, in particular to a wireless signal transmission antenna of a while-drilling instrument.
Background
At present, more and more instruments while drilling use a wireless signal cross-transmission technology, particularly near-bit instruments while drilling. The existing wireless signal transmission antenna generally comprises a functional body and a glass fiber reinforced plastic cover wrapping the functional body, and has the problems of poor shock resistance, poor wear resistance, low strength, low signal transmission accuracy, short service life and the like, so that the wireless signal transmission technology of the while-drilling instrument cannot be widely popularized.
Disclosure of Invention
The embodiment of the invention provides a wireless signal transmission antenna of a drilling instrument, which comprises an annular functional body, wherein a lead-out wire group is arranged on one side of the functional body and is connected with a control circuit board in a well following instrument.
One possible design includes a wear ring that is disposed around and embedded in the rubber member, the wear ring constituting the wear portion.
One possible design includes an anti-rotation ring, which is arranged between the rubber part and a circuit framework of the instrument following the well, and the anti-rotation ring is fixed with the rubber part.
In one possible design, the wireless signal transmission antenna is integrally molded by vulcanization in a mold.
According to the possible design, the anti-rotation ring is provided with the anti-rotation pin extending to the circuit framework, the circuit framework corresponds to the anti-rotation pin is provided with the mounting hole, and the anti-rotation pin is inserted into the mounting hole and used for limiting the relative rotation of the wireless signal transmission antenna and the circuit framework.
In one possible design, a side of the wear-resistant ring facing the rubber member is provided with a first fixing hole, and the rubber member fills the first fixing hole during vulcanization molding.
According to a possible design, a second fixing hole is formed in one side, facing the rubber part, of the anti-rotation ring, and the rubber part is filled in the second fixing hole during vulcanization molding.
According to one possible design, the anti-rotation pin is provided with a threading hole which is communicated along the axis of the anti-rotation pin, and the wire group is led out of the rubber piece through the threading hole and led into the while-drilling instrument through the mounting hole.
In one possible design, the rubber part is made of high-density hydrogenated nitrile rubber, and the wear-resisting ring and the anti-rotating ring are non-magnetic wear-resisting metal parts.
In one possible embodiment, the functional body comprises a ring-shaped metal core and a high-temperature conductor wound around the metal core.
The wireless signal transmission antenna provided by the embodiment of the invention has the advantages of good shock resistance, wear resistance and pressure resistance, so that the antenna can be used for a longer time, the transmission signal is not influenced by shock, and the accuracy is high.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a first schematic diagram of a wireless signal transmission antenna according to an embodiment of the invention;
fig. 2 is a second schematic diagram of a wireless signal transmission antenna according to an embodiment of the invention;
FIG. 3 is a sectional view taken along line A-A in FIG. 2;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
FIG. 5 is a schematic view of the wear ring of FIG. 1;
FIG. 6 is a schematic view of the rubber member of FIG. 1;
fig. 7 is a schematic view of the anti-rotation ring of fig. 1.
Reference numerals: the anti-rotation device comprises a rubber part 1, a wear-resistant ring 2, an anti-rotation ring 3, a functional body 4, a wire group 5, an anti-rotation pin 6, a first fixing hole 7, an installation cavity 8, an installation groove 9, a first bulge 10, a second bulge 11, a second fixing hole 12 and a threading hole 13.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Please refer to fig. 1 to 7, which illustrate a wireless signal transmitting antenna of the while drilling tool of the present invention. As shown in fig. 1, 2 and 6, the wireless signal transmission antenna includes a ring-shaped functional body 4, wherein a wire set 5 is provided on one side of the functional body, and the wire set 5 can be connected to a control circuit board (not shown) in the associated well tool. Notably, the wireless signal transmission antenna further includes a rubber member 1, the rubber member 1 is also annular, an installation cavity 8 is arranged in the rubber member 1, the functional body 4 is arranged in the installation cavity 8, meanwhile, the wire group 5 of the functional body 4 penetrates out of the rubber member 1, and the rubber member 1 is connected with a circuit framework (not shown in the figure) of the well-following instrument at one side of the penetrating out of the wire group 5. In addition, the periphery of the rubber part 1 is also provided with a wear-resistant part, so that the functional body 4 is not worn by the well wall. Therefore, the rubber part 1 can protect the functional body 4 and improve the shock resistance, wear resistance and pressure resistance of the wireless signal transmission antenna, so that the antenna can be used for a longer time, the transmission signal is not influenced by shock, and the accuracy is higher.
First, as for the functional body 4, it can stably output and receive wireless electromagnetic signals at a high temperature of 200 ℃, and it specifically includes a ring-shaped metal core and a high-temperature wire wound on the metal core, and the high-temperature wire is led out to form the above-mentioned wire set 5, and two sets of wire sets 5 are provided on the functional body 4 of this embodiment.
As shown in fig. 1 and 2, the wireless signal transmission antenna further includes a wear-resistant ring 2 forming the wear-resistant portion and an anti-rotation ring 3 for limiting the antenna, wherein the wireless signal transmission antenna is integrally formed by vulcanizing a mold, that is, the rubber member 1, the wear-resistant ring 2, the anti-rotation ring 3 and the functional body 4 are formed by vulcanizing rubber through a customized mold at one time. The rubber part 1 is made of high-density hydrogenated nitrile rubber, has the characteristics of hydrogen sulfide corrosion resistance, pressure resistance of 140MPa, temperature resistance of 200 ℃ and slurry erosion resistance, has Shore hardness of 80-90, excellent stability and good shock resistance, can protect the function body 4 from being influenced by underground vibration of an instrument, and ensures stable work of the antenna.
As shown in fig. 3 to 5, the wear-resistant ring 2 is annular and surrounds the rubber member 1, and the wear-resistant ring 2 is embedded in the rubber member 1 and slightly protrudes from the outer wall of the rubber member 1 to protect the outer wall of the rubber member 1, thereby constituting a wear-resistant portion of the rubber member 1. The wear-resisting ring 2 is a nonmagnetic wear-resisting metal part and can be made of wear-resisting and nonmagnetic alloy, and the functional body 4 can be protected from being abraded by a well wall and being not eroded by mud in the drilling process of an instrument.
As for the anti-rotation ring 3, as shown in fig. 4 and 7, it is arranged on the leading-out side of the wire group 5, and is clamped between the rubber member 1 and the circuit framework of the following well instrument, and the wire group 5 passes through the anti-rotation ring 3, wherein, the anti-rotation ring 3 is also ring-shaped, and is made of the same material as the wear-resistant ring 2. Specifically, the anti-rotation ring 3 is provided with anti-rotation pins 6 extending towards the circuit framework (i.e. back to the rubber part 1), the two anti-rotation pins 6 protrude out of the end face of the anti-rotation ring 3, correspondingly, the circuit framework of the well instrument is provided with mounting holes (not shown in the figure) corresponding to the anti-rotation pins 6, and after the antenna is connected with the circuit framework, the anti-rotation pins 6 are inserted into the mounting holes to limit the relative rotation of the wireless signal transmission antenna and the circuit framework. In addition, the rotation-preventing pin 6 is provided with a threading hole 13 which is penetrated along the axis thereof, and the wire group 5 can be led out of the antenna through the threading hole 13 and led into the interior of the drilling-following instrument through a mounting hole (not shown in the figure). The anti-rotation ring 3 thus prevents the antenna from rotating relative to the drilling equipment during drilling.
It can be known from the foregoing, the radio signal transmission antenna of this embodiment vulcanizes integrated into one piece by the mould, need place wear ring 2, anti-rotating ring 3 and function body 4 in advance in the design mould, pours into the sizing material into afterwards, when the sizing material shaping is rubber spare 1, rubber spare 1 then can be fixed as an organic whole with above-mentioned wear ring 2, anti-rotating ring 3 and function body 4. Wherein, for the shaping fastening, function body 4 has been wrapped up in rubber spare 1, has seted up first fixed orifices 7 and second fixed orifices 12 on wear-resisting ring 2 and the anti-rotating ring 3 respectively, has evenly seted up a plurality of first fixed orifices 7 on wear-resisting ring 2, has evenly seted up a plurality of second fixed orifices 12 on the anti-rotating ring 3, and first fixed orifices 7 are rectangular shape through-hole, and second fixed orifices 12 are circular through-hole. The injected rubber material fills the first fixing hole 7 and the second fixing hole 12, after molding, a first protrusion 10 and a second protrusion 11 are formed on the surface of the rubber member 1, and the first protrusion 10 and the second protrusion 11 are respectively inserted into the first fixing hole 7 and the second fixing hole 12, so that the wear-resistant ring 2 and the anti-rotation ring 3 are fastened on the rubber member 1. In addition, in order to insert the wear-resistant ring 2 into the rubber member 1, after vulcanization molding, an installation groove 9 matching with the wear-resistant ring 2 is formed on the outer wall of the rubber member 1, and the first protrusion 10 is also formed in the installation groove 9. Therefore, the wireless signal transmission antenna is manufactured and molded at one time according to the content, the manufacturing process is simple and convenient, and the size of the antenna can be adjusted by an operator through adjusting the size of the mold, so that the wireless signal transmission antenna can adapt to instruments with different outer diameters while drilling.
The wireless signal transmission antenna can complete wireless type sending and receiving underground, wherein two wireless signal transmission antennas are needed, one of the two wireless signal transmission antennas sends out an electromagnetic signal, the electromagnetic signal can be transmitted through mud, the electromagnetic signal is received by the other wireless signal transmission antenna, and therefore measurement information of an underground instrument is wirelessly transmitted through the mud.
By combining the embodiment, the wireless signal transmission antenna provided by the embodiment of the invention has the advantages of good shock resistance, wear resistance and pressure resistance, so that the antenna can be used for a longer time, the transmission signal is not influenced by vibration, and the accuracy is high. Moreover, the wireless signal transmission antenna is an independent module, is convenient to disassemble and assemble, can adapt to various drilling fluid environments and geological conditions, and is wide in application range.
In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" structure ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures referred to have specific orientations, are configured and operated in specific orientations, and thus, are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A wireless signal transmission antenna of a while-drilling instrument comprises an annular functional body, wherein a lead-out wire group is arranged on one side of the functional body and is connected with a control circuit board in the while-drilling instrument; the line group penetrates out of the rubber piece, one side of the rubber piece, where the line group penetrates out, is connected with a circuit framework of a well instrument, and the periphery of the rubber piece is provided with a wear-resistant part integrated with the rubber piece.
2. The wireless signal transmission while drilling instrument antenna as recited in claim 1, comprising a wear ring disposed around and embedded in the rubber member, the wear ring constituting the wear portion.
3. The wireless signal transmission antenna of the while-drilling instrument as recited in claim 2, wherein the antenna comprises an anti-rotation ring, the anti-rotation ring is arranged between the rubber piece and a circuit framework of the well-following instrument, and the anti-rotation ring is fixed with the rubber piece.
4. The while-drilling instrument wireless signal transmission antenna as recited in claim 3, wherein the wireless signal transmission antenna is integrally molded by vulcanization molding.
5. The antenna for transmitting the wireless signals while drilling instrument as recited in claim 3, wherein the anti-rotation ring is provided with an anti-rotation pin extending towards the circuit framework, the circuit framework is provided with a mounting hole corresponding to the anti-rotation pin, and the anti-rotation pin is inserted into the mounting hole to limit the relative rotation of the antenna for transmitting the wireless signals and the circuit framework.
6. The wireless signal transmission while drilling instrument antenna as recited in claim 4, wherein a first fixing hole is formed in a side of the wear-resistant ring facing the rubber member, and the rubber member fills the first fixing hole when being molded by vulcanization.
7. The wireless signal transmission antenna of the while-drilling instrument as recited in claim 4, wherein a second fixing hole is formed in a side, facing the rubber member, of the anti-rotation ring, and the rubber member is filled in the second fixing hole during vulcanization molding.
8. The wireless signal transmission antenna of the while-drilling instrument as recited in claim 5, wherein the anti-rotation pin is provided with a threading hole penetrating along an axis of the anti-rotation pin, and the wire group is led out of the rubber piece through the threading hole and led into the while-drilling instrument through the mounting hole.
9. The wireless signal transmission antenna of the while-drilling instrument according to any one of claims 3 to 8, wherein the rubber member is made of high-density hydrogenated nitrile butadiene rubber, and the wear-resistant ring and the anti-rotation ring are made of nonmagnetic wear-resistant metal members.
10. The wireless signal transmission antenna of the while-drilling tool as recited in any one of claims 1 to 8, wherein the functional body comprises a ring-shaped metal core and a high-temperature wire wound on the metal core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010339260.7A CN111509354B (en) | 2020-04-26 | 2020-04-26 | Wireless signal transmission antenna of while-drilling instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010339260.7A CN111509354B (en) | 2020-04-26 | 2020-04-26 | Wireless signal transmission antenna of while-drilling instrument |
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| CN111509354A CN111509354A (en) | 2020-08-07 |
| CN111509354B true CN111509354B (en) | 2021-09-10 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7265649B1 (en) * | 2007-02-19 | 2007-09-04 | Hall David R | Flexible inductive resistivity device |
| CN102946001A (en) * | 2012-11-30 | 2013-02-27 | 中国海洋石油总公司 | Antenna coupler coupled with logging-while-drilling resistivity apparatus |
| CN104769773A (en) * | 2012-07-20 | 2015-07-08 | 纽泰克温图斯公司 | Antenna for wireless underground communication |
| EP3340483A1 (en) * | 2016-12-23 | 2018-06-27 | Weatherford U.K. Limited | Antenna for downhole communication |
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| US8322196B2 (en) * | 2009-08-02 | 2012-12-04 | Schlumberger Technology Corporation | Vibrating wire viscometers |
| CN103061755B (en) * | 2011-10-19 | 2016-01-13 | 中国石油化工股份有限公司 | A kind of down-hole nearly drill bit radio magnetic wave signal short-distance transmission system and method |
| CN103089249B (en) * | 2013-01-09 | 2015-07-15 | 电子科技大学 | Signal wireless electromagnetism transmission system while drilling |
| AU2013251202A1 (en) * | 2013-10-02 | 2015-04-16 | Weatherford Technology Holdings, Llc | A method of drilling a wellbore |
| CN203499673U (en) * | 2013-10-18 | 2014-03-26 | 北京天和正庆科技发展有限公司 | Radial vibration reduction module of inclinometer while drilling |
| CN110265784B (en) * | 2018-03-12 | 2021-02-26 | 中国石油化工股份有限公司 | Antenna device of drilling instrument |
| CN110344823B (en) * | 2019-06-19 | 2023-04-07 | 中国石油天然气集团有限公司 | While-drilling gamma resistivity imaging logging instrument based on rotary steering tool |
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2020
- 2020-04-26 CN CN202010339260.7A patent/CN111509354B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7265649B1 (en) * | 2007-02-19 | 2007-09-04 | Hall David R | Flexible inductive resistivity device |
| CN104769773A (en) * | 2012-07-20 | 2015-07-08 | 纽泰克温图斯公司 | Antenna for wireless underground communication |
| CN102946001A (en) * | 2012-11-30 | 2013-02-27 | 中国海洋石油总公司 | Antenna coupler coupled with logging-while-drilling resistivity apparatus |
| EP3340483A1 (en) * | 2016-12-23 | 2018-06-27 | Weatherford U.K. Limited | Antenna for downhole communication |
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