CN101315027A - Apparatus for detecting transmitted signal of electromagnetic wave logging instrument - Google Patents
Apparatus for detecting transmitted signal of electromagnetic wave logging instrument Download PDFInfo
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- CN101315027A CN101315027A CNA2008101155678A CN200810115567A CN101315027A CN 101315027 A CN101315027 A CN 101315027A CN A2008101155678 A CNA2008101155678 A CN A2008101155678A CN 200810115567 A CN200810115567 A CN 200810115567A CN 101315027 A CN101315027 A CN 101315027A
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- logging instrument
- electromagnetic wave
- verifier
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Abstract
The invention discloses a device for detecting signals transmitted by an electromagnetic logging instrument, which comprises a non-closed annular checker, a scaler and an analytic processing device, wherein a central through-hole is formed on the annular checker, an axial through-hole is arranged on the scaler, the annular checker is sheathed on the scaler through the central through-hole and is used for sensing the signals transmitted by the transmitting coil of a logging instrument and generating a sensing signal, the sensing signal is transmitted to the analytic processing device, and the scaler is used for measuring the relative replacement of the annular checker and the transmitting coil. The device can directly measure the emission intensity of the electromagnetic signals transmitted by the logging instrument.
Description
Technical field
The present invention's shooting relates to a kind of logger, specifically, relates to a kind of device that detects transmitted signal of electromagnetic wave logging instrument.
Background technology
To the external radiation electromagnetic wave signal, the intensity of this electromagnetic wave signal has determined the power of electromagnetic wave propagation ability to the transmitting coil of electromagnetic wave logging instrument in its work period, will directly influence the intensity of received signal and the Effect on Detecting of instrument.Because the emissive porwer of the transmitting coil of logger is directly related with emission current, in order to calculate the emission current of the higher-order of oscillation, do not adopt the way of direct measurement usually, and adopt two kinds of indirect ways, the first is measured transmitting coil impedance loop and emission voltage, calculates emission current; It two is to calculate evaluation circuits power consumption and emission voltage, thereby calculates emission current.
No matter any above-mentioned two kinds of ways are, all only be suitable for the test of debug phase, and after the instrument assembling is finished, if carry out the mensuration of transmit signal strength again then be pretty troublesome thing, usually can only dismantle instrument, and in a single day careless in the dismounting, then may cause instrument parameter to change, the instrument parameter of former test is all cancelled.Industry also is not directly used in the device of measuring electromagnetic wave logger emissive porwer and transmission signal quality now.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of device that detects transmitted signal of electromagnetic wave logging instrument, can directly measure the emissive porwer of logger electromagnetic signals under the situation of not dismantling logger.
In order to address the above problem, the invention provides a kind of device that detects transmitted signal of electromagnetic wave logging instrument, the annular verifier, scaler and the APU that comprise non-closure, described annular verifier is provided with central through hole, described scaler is provided with axially extending bore, and described annular verifier is sleeved on the described scaler by described central through hole; Described annular verifier is used for the transmitting and generate induced signal of transmitting coil of induction logging instrument, and described induced signal is sent to described APU; Described scaler is used to measure the relative displacement of described annular verifier and described transmitting coil.
Preferably, described annular verifier is provided with the induction annulus of non-closure, and described induction annulus is used to respond to transmitting of described transmitting coil and generates described induced signal.
Preferably, described scaler is provided with graduated scale, and described graduated scale is used to represent the relative movement distance of described annular verifier and transmitting coil.
Preferably, described annular verifier comprises: clock dial, joint holder, joint fixed cap, induction annulus joint, draw the induction annulus and the central through hole of joint, non-closure; Wherein, the outer edge of described clock dial is provided with groove, and described induction annulus is arranged in the described groove; Two joints of described induction annulus are fixed by described induction annulus joint, and are connected to described signal processing apparatus by the described joint of drawing; Described joint holder and joint fixed cap cooperate, with described induction annulus joint with draw joint and be fixed on the described clock dial.
Preferably, the radius size of described induction annulus is determined by described clock dial.
Preferably, described annular verifier is provided with wave filter, and described induced signal is sent to described APU through behind the described filter filtering.
Preferably, described wave filter is provided with passive bandwidth-limited circuit, and the filtering of described wave filter realizes by described passive bandwidth-limited circuit.
Preferably, described APU comprises circuit of LED, oscillograph or frequency spectrograph, and described induced signal is sent to described diode circuit, oscillograph or frequency spectrograph and carries out analyzing and processing.
Preferably, described circuit of LED comprises the current-limiting resistance and the light emitting diode of serial connection mutually.
Preferably, described light emitting diode is a dichromatic LED.
The present invention has filled up a blank in the transmitted signal of electromagnetic wave logging instrument calibration equipment, not only can directly assess transmit signal strength and quality exactly in the laboratory, the duty that also can be used for on-the-spot quick test logger emission element is a kind of easy production, low cost, multiduty reliable apparatus.
The present invention can directly measure the emissive porwer of its electromagnetic signals under the situation of not dismantling logger, be applicable to the electromagnetic wave logging instrument that adopts single turn transmitting coil or multiturn solenoid transmitting coil.Further, can also utilize the present invention that near the electromagnetic field transmitting coil (far field) is carried out comprehensive assessment, thereby measure emission current accurately, check the quality that transmits.
Description of drawings
Fig. 1 is the structural representation of annular verifier in the preferred embodiment of the present invention;
Fig. 2 is the structural representation of scaler in the preferred embodiment of the present invention;
Fig. 3 is induction annulus and the transmitting coil schematic diagram that relatively moves in the preferred embodiment of the present invention;
Fig. 4 is that medium frequency of the present invention is the voltage-position curve figure of the induced signal of 0.8MHz;
Fig. 5 is that medium frequency of the present invention is the voltage-position curve figure of the induced signal of 6.4MHz;
Fig. 6 is the circuit diagram that connects led circuit among the present invention;
Fig. 7 is the circuit diagram that connects oscillograph or frequency spectrograph among the present invention.
The specific embodiment
With embodiment technical solution of the present invention is described in further details with reference to the accompanying drawings.
The present invention mainly comprises annular verifier and two parts of scaler of non-closure, annular verifier transmitting in order to induction logging instrument, scaler is in order to the relative movement distance of measure annular verifier on transmitting coil, and the induced signal of annular verifier is transferred to signal processing apparatus.
As shown in Figure 1, be the structural representation of annular verifier in the preferred embodiment of the present invention, annular verifier comprises: clock dial 11, joint holder 12, joint fixed cap 13, induction annulus joint 14, draw joint 15, induction annulus 16 and central through hole.Wherein, the outer edge of clock dial 11 is provided with groove, and the induction annulus 16 of non-closure is arranged in this groove, and two joints of induction annulus 16 are fixed by induction annulus joint 14, and draw induced signal to signal processing apparatus by drawing joint 15.Joint holder 12 and joint fixed cap 13 cooperate, and will respond to annulus joint 14 and draw joint 15 to be fixed on the clock dial 11.The radius size of induction annulus 16 can be set by clock dial 11.
As shown in Figure 2, be the structural representation of scaler in the preferred embodiment of the present invention, scaler becomes column structure, its outer wall axially be provided with graduated scale 21.The external diameter of scaler is less than the diameter of central through hole, the annular verifier is sleeved on the outer wall of scaler by central through hole, the annular verifier can move axially along the outer wall of scaler, thereby the relative position of realizing induction annulus 16 and transmitting coil 31 (referring to Fig. 3) moves.The middle part of scaler axially is provided with axially extending bore, and the transmitting coil 31 of electromagnetic wave logger can axially move in this axially extending bore.
Basic principle of the present invention is to come the electromagnetic wave signal of induced emission coil 31 emissions by a high induction annulus 16 of leading the non-closure of wire formation.The induced signal of induction annulus 16 is relevant with the relative position relation and the emission signal frequency of transmitting coil 31 with induction annulus 16.The present invention sets up induced signal amplitude-position relation curve under certain operating frequency by induction annulus 16 in conjunction with scaler, and then by with the induced signal amplitude of simulation analysis-position relation curve contrast, whether the emission current of assessing on the transmitting coil 31 reaches designing requirement, also can detect the form that transmits and whether reach designing requirement.
Because transmitting coil 31 is not simple " point source " notion on the physics, structural parameters of electromagnetic field distribution and transmitting coil 31 have much relations near it, and therefore the acquisition of theoretical induced signal distribution curve is a big difficult point.Corresponding induced signal amplitude-position distribution curve under certain induction annulus 16 radiuses that the present invention tries to achieve by the Numerical Simulation Analysis means and transmitting coil 31 numbers of turn has been set up the inner link normative reference of 31 of annular verifier, scaler and transmitting coils thus.
As shown in Figure 3, be induction annulus and the transmitting coil schematic diagram that relatively moves in the preferred embodiment of the present invention, induction annulus 16 progressively moves to the right side of transmitting coil 31 from the left side of transmitting coil 31, wherein 0 central point of representing transmitting coil 31.When the relative position of induction annulus 16 and transmitting coil 31 was moved, the amplitude of induced signal changed with the variation of induction annulus 16 positions.
As shown in Figure 4 and Figure 5, be that medium frequency of the present invention is the voltage-position curve figure of two induced signals of 0.8MHz and 6.4MHz.Wherein, different curves, represented the relation curve of selecting the voltage-position of induced signal in the different radii induction annulus 16 for use, the voltage-position curve when the induction annulus 16 that there is shown 7.5cm, 10cm, 12.5cm, 15cm, 17.5cm, six kinds of radiuses of 20cm is moved with respect to the relative position of transmitting coil 31.
Because transmitting of electromagnetic wave logging instrument can be sinusoidal signal, also can be square wave or other waveform signals, therefore the frequency spectrum of the induced signal of directly sensing may be than horn of plenty, and the signal that how to detect a certain frequency of being concerned about on certain transmitting coil 31 just becomes a great problem.Analyze for the induced signal that obtains from induction annulus 16 better, adopted wave filter that induced signal is carried out filtering, the induced signal of process wave filter outputs to signal processing apparatus.Wave filter has been expanded the scope of application of the present invention, and range of application of the present invention can be widened in the detection that complicated wave form transmits.Wave filter is provided with passive bandwidth-limited circuit, and passive bandwidth-limited circuit can filter out interference, obtains the signal of a certain frequency.
This wave filter is installed on the clock dial 11, and the parameter of wave filter is determined according to the design of transmitting coil 31.
According to The field and laboratory tests needs, among the present invention, signal processing apparatus can be led circuit, oscillograph or frequency spectrograph.Induced signal can take this simply to observe and judge or accurate analyzing and processing, specifically as shown in Figure 6 and Figure 7.
As shown in Figure 6, be the circuit diagram that connects led circuit among the present invention, when using the plug of having led circuit to connect, form the proving ring of a closure.Plug is provided with coaxial fitting, can directly connect oscillograph or spectrum analyzer.
The induction annulus 16 of non-closure, passive bandwidth-limited circuit, led circuit (comprising current-limiting resistance and dichromatic LED) are connected in series successively mutually.Induced signal in the induction annulus 16 is delivered to passive bandwidth-limited circuit and is carried out filtering, and the induced signal that obtains a certain frequency is delivered to current-limiting resistance and dual color light emitting diode.By current-limiting resistance, can judge fast whether the intensity of transmitting coil 31 signals reaches designing requirement by the photochromic and light intensity of dual color light emitting diode, such design helps on-the-spot fast detecting needs.
As shown in Figure 7, be the circuit diagram that connects oscillograph or frequency spectrograph among the present invention.When taking off plug, can use coaxial cable to connect passive bandwidth-limited circuit to oscillograph or spectrum analyzer, thereby can obtain transmitting coil 31 amplitude of transmitting-position relation curve accurately, can assess transmission signal quality with emulation induced signal amplitude-position relation curve comparative analysis, such design helps the accurate check and analysis in laboratory.
Claims (10)
1, a kind of device that detects transmitted signal of electromagnetic wave logging instrument, it is characterized in that, the annular verifier, scaler and the APU that comprise non-closure, described annular verifier is provided with central through hole, described scaler is provided with axially extending bore, and described annular verifier is sleeved on the described scaler by described central through hole; Described annular verifier is used for the transmitting and generate induced signal of transmitting coil of induction logging instrument, and described induced signal is sent to described APU; Described scaler is used to measure the relative displacement of described annular verifier and described transmitting coil.
2, the device of detection transmitted signal of electromagnetic wave logging instrument as claimed in claim 1, it is characterized in that, described annular verifier is provided with the induction annulus of non-closure, and described induction annulus is used to respond to transmitting of described transmitting coil and generates described induced signal.
3, the device of detection transmitted signal of electromagnetic wave logging instrument as claimed in claim 1 is characterized in that, described scaler is provided with graduated scale, and described graduated scale is used to represent the relative movement distance of described annular verifier and transmitting coil.
4, as the device of claim 1 or 2 described detection transmitted signal of electromagnetic wave logging instrument, it is characterized in that described annular verifier comprises: clock dial, joint holder, joint fixed cap, induction annulus joint, draw the induction annulus and the central through hole of joint, non-closure; Wherein, the outer edge of described clock dial is provided with groove, and described induction annulus is arranged in the described groove; Two joints of described induction annulus are fixed by described induction annulus joint, and are connected to described signal processing apparatus by the described joint of drawing; Described joint holder and joint fixed cap cooperate, with described induction annulus joint with draw joint and be fixed on the described clock dial.
5, the device of detection transmitted signal of electromagnetic wave logging instrument as claimed in claim 4 is characterized in that, the radius size of described induction annulus is determined by described clock dial.
6, the device of detection transmitted signal of electromagnetic wave logging instrument as claimed in claim 1 is characterized in that, described annular verifier is provided with wave filter, and described induced signal is sent to described APU through behind the described filter filtering.
7, the device of detection transmitted signal of electromagnetic wave logging instrument as claimed in claim 6 is characterized in that, described wave filter is provided with passive bandwidth-limited circuit, and the filtering of described wave filter realizes by described passive bandwidth-limited circuit.
8, the device of detection transmitted signal of electromagnetic wave logging instrument as claimed in claim 6, it is characterized in that, described APU comprises circuit of LED, oscillograph or frequency spectrograph, and described induced signal is sent to described diode circuit, oscillograph or frequency spectrograph and carries out analyzing and processing.
9, the device of detection transmitted signal of electromagnetic wave logging instrument as claimed in claim 8 is characterized in that, described circuit of LED comprises the current-limiting resistance and the light emitting diode of serial connection mutually.
10, the device of detection transmitted signal of electromagnetic wave logging instrument as claimed in claim 8 is characterized in that, described light emitting diode is a dichromatic LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101155678A CN101315027B (en) | 2008-06-25 | 2008-06-25 | Apparatus for detecting transmitted signal of electromagnetic wave logging instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101155678A CN101315027B (en) | 2008-06-25 | 2008-06-25 | Apparatus for detecting transmitted signal of electromagnetic wave logging instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101315027A true CN101315027A (en) | 2008-12-03 |
| CN101315027B CN101315027B (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101155678A Expired - Fee Related CN101315027B (en) | 2008-06-25 | 2008-06-25 | Apparatus for detecting transmitted signal of electromagnetic wave logging instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581214B (en) * | 2009-03-23 | 2012-07-11 | 西安石油大学 | Transient electromagnetic logging device in through-casing well |
| CN104594818A (en) * | 2014-12-24 | 2015-05-06 | 新奥气化采煤有限公司 | Well drilling casing pipe and well drilling casing pipe detection method |
| CN109521386A (en) * | 2018-12-10 | 2019-03-26 | 中国海洋石油集团有限公司 | A kind of insulating panel and low-resistance signal generation apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5530359A (en) * | 1995-02-03 | 1996-06-25 | Schlumberger Technology Corporation | Borehole logging tools and methods using reflected electromagnetic signals |
| CN1366190A (en) * | 2002-03-12 | 2002-08-28 | 辽河石油勘探局测井公司 | Array-type lateral well logger with different layering powers |
| US6892137B2 (en) * | 2003-04-29 | 2005-05-10 | Pathfinder Energy Services, Inc. | Adjustment for frequency dispersion effects in electromagnetic logging data |
| CN1329626C (en) * | 2005-09-26 | 2007-08-01 | 中国海洋石油总公司 | Well logging method and instrument based on HF array electromagnetic wave propagation |
| CN200982193Y (en) * | 2006-12-14 | 2007-11-28 | 中国石油天然气集团公司 | All-sealed slim-hole sound graduator |
-
2008
- 2008-06-25 CN CN2008101155678A patent/CN101315027B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581214B (en) * | 2009-03-23 | 2012-07-11 | 西安石油大学 | Transient electromagnetic logging device in through-casing well |
| CN104594818A (en) * | 2014-12-24 | 2015-05-06 | 新奥气化采煤有限公司 | Well drilling casing pipe and well drilling casing pipe detection method |
| CN104594818B (en) * | 2014-12-24 | 2017-07-04 | 新奥科技发展有限公司 | Well casing and well casing detection method |
| CN109521386A (en) * | 2018-12-10 | 2019-03-26 | 中国海洋石油集团有限公司 | A kind of insulating panel and low-resistance signal generation apparatus |
| 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 |
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| CN101315027B (en) | 2011-11-16 |
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Granted publication date: 20111116 Termination date: 20170625 |