CN102946001B - Antenna coupler coupled with logging-while-drilling resistivity apparatus - Google Patents
Antenna coupler coupled with logging-while-drilling resistivity apparatus Download PDFInfo
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- CN102946001B CN102946001B CN201210506795.4A CN201210506795A CN102946001B CN 102946001 B CN102946001 B CN 102946001B CN 201210506795 A CN201210506795 A CN 201210506795A CN 102946001 B CN102946001 B CN 102946001B
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Abstract
The invention discloses an antenna coupler coupled with a logging-while-drilling resistivity apparatus, which overcomes the defect that an operation of carrying out working performance test on transmitting and receiving antennas of the logging-while-drilling resistivity apparatus is difficult to perform currently. The antenna coupler comprises a coupling coil, a coil bracket and a cable joint, wherein the coupling coil coupling transmitting and receiving antennas of the logging-while-drilling resistivity apparatus is fixed on a drill collar of the logging-while-drilling resistivity apparatus through the coil bracket; and the cable joint for connecting a transmission cable is connected with the coupling coil. According to the implementation of the invention, the conversion of signals between a simulation testing device and the apparatus is realized by using the electromagnetic coupling between coils and antennas according to the principle of electromagnetic wave propagation.
Description
Technical field
The present invention relates to a kind of antenna coupler, particularly relate to a kind of antenna coupler be coupled with resistivity logging while drilling well logger.
Background technology
Resistivity logging while drilling well logger can bore the very first time after opening on stratum and measure stratum raw resistivity value, and drilling engineer can be instructed accordingly to process drilling program in time, and this performance is very important for multi-faceted drilling well.
Because resistivity logging while drilling well logger is generally arranged in the metal drill collar of several tons of weights, the method detect instrument at present, verified is generally utilize " air zero " and " pond demarcation " (in the large pond of known resistivity surveying instrument) to carry out.These two kinds of detection methods i.e. complexity but also inaccurate, and because only have some scales, complete at 2 or multiple spot scale is almost impossible work.
The high frequency of resistivity logging while drilling well logger (1,2MHZ) is launched, receiving antenna is also sealed in drill collar, directly cannot be connected, so be difficult to realize with the signal conversion of boring simulation detection equipment (extract and launch) with the external world.At present to how effectively checking that resistivity logging while drilling well logger is launched, the serviceability of receiving antenna, does not also have better technological means.
Summary of the invention
Technical matters to be solved by this invention overcomes the deficiency be difficult at present resistivity logging while drilling well logger is launched, receiving antenna carries out serviceability detection.
In order to solve the problems of the technologies described above, the invention provides a kind of antenna coupler be coupled with resistivity logging while drilling well logger, comprising pickup coil, coil brace and cable splice, wherein:
Described pickup coil be fixed on by described coil brace described resistivity logging while drilling well logger is installed drill collar on, be set to resistivity logging while drilling instrument emitting antenna signal, standard phase difference signal and master output deamplification to be coupled on the receiving antenna of resistivity logging while drilling well logger; Described cable splice for connecting transmission cable is connected with described pickup coil.
Preferably, pickup coil comprises the magnetic core with opening and the magnetic core coil be wound on magnetic core.
Preferably, described opening is relative with the position of magnetic core coil described in coiling on described magnetic core.
Preferably, described magnetic core coil comprises multiple receiving coil of different investigation depth and multiple transmitting coils of diverse location; The emitting antenna of described multiple receiving coil and described resistivity logging while drilling well logger is coupled, and the receiving antenna of described multiple transmitting coil and described resistivity logging while drilling well logger is coupled.
Preferably, the described pickup coil centre frequency being fixed on dark emitting antenna is 1 megahertz; In being fixed on, described pickup coil centre frequency that is shallow, an ultra shallow is 2 megahertzes; The described pickup coil bandwidth being fixed on far away, nearly receiving antenna is 2 megahertzes.
Preferably, between each described transmitting coil, between each described receiving coil and between described transmitting coil and receiving coil, cross jamming is all less than 1%.
Preferably, the emitting antenna of described coil brace and described resistivity logging while drilling well logger and receiving antenna remain on same plane.
Preferably, described coil brace comprises the nylon bracket of two semi-circular shape, and the described nylon bracket of two semicircular ring is combined bolt and the hinge of a formation annulus.
Compared with prior art, the embodiment of the application can be used to the serviceability detecting the transmitting of resistivity logging while drilling well logger, receiving antenna, overcomes the defect of prior art.The embodiment of the application, according to Electromagnetic Wave Propagation principle, utilizes electromagnetic coupled between coil and antenna, achieves the conversion of signal between simulation detection equipment and instrument.The embodiment of the application can apply to and replace pond to carry out in the equipment of analog scaling resistivity logging while drilling well logger.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in instructions, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing is used to provide the further understanding to technical solution of the present invention, and forms a part for instructions, is used from and explains technical scheme of the present invention, do not form the restriction to technical solution of the present invention with the embodiment one of the application.
Fig. 1 is the organigram of the antenna coupler be coupled with resistivity logging while drilling well logger of the application.
Fig. 2 is the organigram of the pickup coil in the embodiment of the present application.
Fig. 3 is the waveform schematic diagram that the emitting antenna of resistivity logging while drilling well logger is coupled to signal on receiving coil in the embodiment of the present application.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical matters whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.Each feature in the embodiment of the present application and embodiment be combineding with each other, all within protection scope of the present invention under prerequisite of not conflicting mutually.
The antenna coupler be coupled with resistivity logging while drilling well logger of the embodiment of the present application mainly comprises pickup coil 3, coil brace and cable splice 4 etc. as shown in Figure 1.
In the embodiment of the application, to the pickup coil 3 that emitting antenna and the receiving antenna of resistivity logging while drilling well logger are coupled, mainly include magnetic core coil 6 and the magnetic core 7 (to identify the opening that 8 illustrate magnetic core 7 in figure) with opening.
Magnetic core coil 6 is wound on magnetic core 7, the opening 8 on magnetic core 7 relative with the position of wound core coil 6 on magnetic core 7 (embodiment of the application is with 180 degree relatively).In the embodiment of the application, the size of magnetic core 7 opening 8, can be arranged as required, ensures only have sensitivity to electromagnetic field couples more among a small circle.Magnetic core 7 in the embodiment of the application is the magnetic core of high frequency height magnetic magnetic permeability.
In the embodiment of the application, magnetic core coil is according to signal frequency and amplitude, and the difference of winding method, comprise altogether dark, in, multiple receiving coils of the different investigation depth such as shallow and an ultra shallow, and multiple transmitting coils of the diverse location such as far away, near.
In the embodiment of the application, magnetic core coil adopts the enameled wire coiling simultaneously of 16 same diameter, ensures the sensitivity of coupled signal.
Magnetic core coil in the embodiment of the application ensures that the pickup coil centre frequency being fixed on dark emitting antenna is 1,000,000 (M) hertz, in being fixed on, pickup coil centre frequency that is shallow, an ultra shallow is 2M hertz, and the pickup coil bandwidth being fixed on far away, nearly receiving antenna is 2M hertz.
In the embodiment of the application, receiving coil includes Td, Tm, Ts, Tx tetra-kinds, and transmitting coil includes Rn, Rf two kinds.
Magnetic core coil in the embodiment of the application, with the antenna one_to_one corresponding of resistivity logging while drilling well logger, relative position keeps certain.After coil Td connects with the concentric cable be connected, resonance frequency is 1 megahertz (MHZ); After coil Tm, Ts, Tx are connected with concentric cable, resonance frequency is 2MHZ; After coil Rn, Rf are connected with concentric cable, resonance frequency is wideband 1-2MHZ.In the embodiment of the application, because respective pickup coil can only be sensitive to electromagnetic field response among a small circle, so can ensure that the cross jamming between each magnetic core coil is less than 1%; Also namely between each transmitting coil, between each receiving coil and between transmitting coil and receiving coil, cross jamming is all less than 1%.
In the embodiment of the application, coil brace mainly comprises the nylon bracket 1 of two semi-circular shape, and the nylon bracket 1 of two semicircular ring is combined bolt 5 and the hinge 2 of a formation annulus.Coil brace has directivity, remains on same plane with the emitting antenna of resistivity logging while drilling instrument and receiving antenna, and ensure that pickup coil is coupled the sensitiveest with each self-corresponding aerial signal, its all part all adopts non-magnetic material to process.
Pickup coil 3 by coil brace, with the antenna of resistivity logging while drilling well logger to be fixed on by predetermined distance resistivity logging while drilling well logger is installed drill collar on.By coil brace, pickup coil 3 is fixedly mounted on drill collar, makes the relative position between pickup coil 3 and resistivity logging while drilling well logger emitting antenna keep fixing, ensure that accuracy and the reliability of detection.
After the signal that four emitting antennas of resistivity logging while drilling well logger are launched is received by the receiving coil in antenna coupler, then be transferred on simulation detection equipment panel by signal-transmitting cable and carry out visualization processing.
In the embodiment of the application, coil brace can be installed with instrument antenna part wringing fit, can ensure the relative position that coil 3 is fixing with instrument antenna.
Cross jamming is the key technical indexes of receiving coil and instrument aerial signal coupling scheme.If there is cross jamming between the receiving coil in instrument emitting antenna and antenna coupler, will affect accuracy of detection, time serious, simulation detection equipment cannot normally work, so need to do cross jamming test to coil coupling device.
As shown in Figure 3, when utilizing the embodiment of the application to carry out the test of cross jamming, from per pass two adjacent groups waveform, do not find that there is the situation disturbed between neighboring track and occur, prove that the embodiment of the application can ensure accuracy of detection.
Coil brace is annular opening, main fixed coupling coil, makes the transmitting of resistivity logging while drilling well logger and receiving antenna and pickup coil remain on same plane, ensures that coupled signal amplitude is maximum.Employing non-magnetic material makes, and avoids the interference to signal.
The embodiment of the application, according to service condition, effectively can be coupled to the emitting antenna of resistivity logging while drilling well logger and receiving antenna, avoid interference each other simultaneously.
Pickup coil in the embodiment of the present application, can detect whether resistivity logging while drilling instrument is working properly and judges.Pickup coil in the embodiment of the present application can be used to the signal that pickup instrument is launched when surface work.After the signal launched instrument again processes, again can be coupled to the receiving antenna of instrument.
The embodiment of the application adopts the method for electromagnetic coupled according to Electromagnetic Wave Propagation principle, achieves that resistivity logging while drilling well logger is launched, the detection of the serviceability of receiving antenna.The embodiment of the application, without the need to directly contacting with resistivity logging while drilling well logger, can be launched with resistivity logging while drilling well logger easily, the carrying out of receiving antenna signal be coupled, be convenient to operation and implement, reduce the labour intensity of operation, improve detection efficiency.
Although the embodiment disclosed by the present invention is as above, the embodiment that described content only adopts for ease of understanding the present invention, and be not used to limit the present invention.Those of skill in the art belonging to any the present invention; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be carried out in the form implemented and details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (5)
1. the antenna coupler be coupled with resistivity logging while drilling well logger, wherein, this antenna coupler comprises pickup coil, coil brace and cable splice, wherein:
Described pickup coil comprises the magnetic core with opening and the magnetic core coil be wound on magnetic core; Described pickup coil be fixed on by described coil brace described resistivity logging while drilling well logger is installed drill collar on, be set to resistivity logging while drilling instrument emitting antenna signal, standard phase difference signal and master output deamplification to be coupled on the receiving antenna of resistivity logging while drilling well logger; Described magnetic core coil according to the difference of signal frequency, amplitude and winding method, comprise dark, in, multiple receiving coils of the different investigation depths of shallow and an ultra shallow, comprise multiple transmitting coils of distant positions and near position; The emitting antenna of described multiple receiving coil and described resistivity logging while drilling well logger is coupled, and the receiving antenna of described multiple transmitting coil and described resistivity logging while drilling well logger is coupled; Described coil brace has directivity, remains on same plane with the emitting antenna of resistivity logging while drilling instrument and receiving antenna, ensures that pickup coil is coupled the sensitiveest with each self-corresponding aerial signal;
Described cable splice is connected with described pickup coil, is set to connect transmission cable.
2. antenna coupler according to claim 1, wherein,
Described opening is relative with the position of magnetic core coil described in coiling on described magnetic core.
3. antenna coupler according to claim 1, wherein,
The described pickup coil centre frequency being fixed on dark emitting antenna is 1 megahertz;
In being fixed on, described pickup coil centre frequency that is shallow, an ultra shallow is 2 megahertzes;
The described pickup coil bandwidth being fixed on far away, nearly receiving antenna is 2 megahertzes.
4. antenna coupler according to claim 1, wherein,
Between each described transmitting coil, between each described receiving coil and between described transmitting coil and receiving coil, cross jamming is all less than 1%.
5. antenna coupler according to claim 1, wherein,
Described coil brace comprises the nylon bracket of two semi-circular shape, and the described nylon bracket of two semi-circular shape is combined bolt and the hinge of a formation annulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210506795.4A CN102946001B (en) | 2012-11-30 | 2012-11-30 | Antenna coupler coupled with logging-while-drilling resistivity apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210506795.4A CN102946001B (en) | 2012-11-30 | 2012-11-30 | Antenna coupler coupled with logging-while-drilling resistivity apparatus |
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| Publication Number | Publication Date |
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| CN102946001A CN102946001A (en) | 2013-02-27 |
| CN102946001B true CN102946001B (en) | 2015-04-15 |
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| CN201210506795.4A Active CN102946001B (en) | 2012-11-30 | 2012-11-30 | Antenna coupler coupled with logging-while-drilling resistivity apparatus |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465490A (en) * | 2013-09-12 | 2015-03-25 | 建宇(上海)石油科技有限公司 | Annular wire threading hole processing method of resistivity while drilling collar |
| CN104564046B (en) * | 2014-12-31 | 2018-03-13 | 中国石油集团长城钻探工程有限公司 | A kind of stratum former-wound coil and the method with its measurement LWD precision |
| WO2018080540A1 (en) * | 2016-10-31 | 2018-05-03 | Han Weishan | Applying e-field antennas to resistivity logging tools |
| CN109521386B (en) * | 2018-12-10 | 2021-01-29 | 中国海洋石油集团有限公司 | Insulating panel and low-resistance signal generating device |
| CN111509354B (en) * | 2020-04-26 | 2021-09-10 | 中国海洋石油集团有限公司 | Wireless signal transmission antenna of while-drilling instrument |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1989424A (en) * | 2004-06-15 | 2007-06-27 | 贝克休斯公司 | Method and apparatus for internal calibration in induction logging instruments |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2378693A1 (en) * | 1999-07-09 | 2001-01-18 | Honeywell International Inc. | Propagating wave earth formation resistivity measuring arrangement |
| CN1979221B (en) * | 2005-11-30 | 2010-09-29 | Kjt企业公司 | System for measuring earth formation resistivity through an electrically conductive well bore casing |
| US7336199B2 (en) * | 2006-04-28 | 2008-02-26 | Halliburton Energy Services, Inc | Inductive coupling system |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1989424A (en) * | 2004-06-15 | 2007-06-27 | 贝克休斯公司 | Method and apparatus for internal calibration in induction logging instruments |
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