CN105484743B - Well logging apparatus and logging method - Google Patents
Well logging apparatus and logging method Download PDFInfo
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- CN105484743B CN105484743B CN201511005018.1A CN201511005018A CN105484743B CN 105484743 B CN105484743 B CN 105484743B CN 201511005018 A CN201511005018 A CN 201511005018A CN 105484743 B CN105484743 B CN 105484743B
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- 230000009466 transformation Effects 0.000 claims description 14
- 238000013507 mapping Methods 0.000 claims description 10
- 238000012935 Averaging Methods 0.000 claims description 7
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 5
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- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
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Abstract
The present invention provides a kind of well logging apparatus and logging method, and wherein device includes pole plate and processor；Wherein, each pole plate includes: transmitting pole plate and reception pole plate；Emit pole plate, be electrically connected respectively with processor and reception pole plate, under the control of a processor, generating at least two mutually orthogonal default subcarriers；And handle at least two mutually orthogonal default subcarriers, transmitting signal is obtained, and trigger transmitting pole plate and emit transmitting signal to pole plate is received；Processor is electrically connected with pole plate is received, it is handled for receiving the reception signal for receiving pole plate, and to signal is received, obtains at least two mutually orthogonal corresponding range values of default subcarrier, and according at least two mutually orthogonal corresponding range values of default subcarrier, corresponding resistivity is obtained；Resistivity is sent to ground-based server again, so that ground-based server is according to each resistivity, the data on stratum in well is obtained, shortens log-time, improve logging efficiency.
Description
Technical field
The present invention relates to formation resistivity logging technical field more particularly to a kind of well logging apparatus and logging methods.
Background technique
During oil exploration, it is often necessary to be measured to the rock stratum around the borehole wall, to obtain formation data.At present
Logging method mainly uses electrical log, which mainly utilizes low-frequency electromagnetic wave to transmit in subterranean strata, passes through
Ohm's law knows the resistivity data of rock stratum around the borehole wall, and can know the liquid in stratum according to the resistivity data
Body is the petroleum of high resistivity or the water of low-resistivity.Specifically, Fig. 1 is electrical log system basic principle in the prior art
Schematic diagram, as shown in Figure 1, the electrical log system mainly includes multiple transmitting pole plates 11, multiple reception pole plates 12 and processor
(not shown), wherein add high voltage or constant-current source at transmitting 11 both ends of pole plate, measure and receive on receiving pole plate 12
Voltage, processor are used to obtain the emission current and the reception voltage for receiving pole plate corresponding with transmitting pole plate of transmitting pole plate, and
This reception voltage Vr and emission current I is divided by, resistivity is obtained.
And in actual well logging, due to underground propagation environment and drilling environment very severe, in order to improve noise
Than usually emitting multiple identical frequency sine waves in the same area, then receiving pole plate first to the multiple same frequencies received
The sine wave of rate carries out average calculating operation, then calculates resistivity again, for example, it is required that the resistivity near certain point, needs
Emit the sine wave that pole plate emits 1000 periods, reception pole plate first carries out the sine wave in this 1000 periods received flat
It handles, after obtaining the sine wave in 1 period, calculates resistivity using IQ demodulation method.
However, above-mentioned such processing method, needs to stop the time in 1000 periods in certain point, well logging is caused to consume
Time it is long, and then slowed down logging speed.
Summary of the invention
The present invention provides a kind of well logging apparatus and logging method, shortens log-time, improves logging efficiency.
The present invention provides a kind of well logging apparatus, comprising: pole plate and the processor being electrically connected with the pole plate；
Wherein, each pole plate includes: transmitting pole plate and reception pole plate；
The transmitting pole plate is electrically connected, in the processor respectively with the processor and the reception pole plate
Under control, at least two mutually orthogonal default subcarrier corresponding with the transmitting pole plate is generated；And by described at least two
Mutually orthogonal default subcarrier is handled, and obtains transmitting signal, and trigger the transmitting pole plate and send out to the reception pole plate
Penetrate the transmitting signal；
The processor is electrically connected with the reception pole plate respectively, for receiving the reception signal for receiving pole plate, and
The reception signal is handled, at least two mutually orthogonal corresponding range value of default subcarrier, and root are obtained
According to the described at least two mutually orthogonal corresponding range values of default subcarrier, corresponding resistivity is obtained；Again by the resistance
Rate is sent to ground-based server, so that the ground-based server is according to each resistivity, obtains the number on stratum in the well
According to；
Wherein, the corresponding at least two mutually orthogonal default subcarrier of different transmitting pole plates is different.
The present invention also provides a kind of logging methods, comprising:
Generate corresponding with the transmitting pole plate at least two mutually orthogonal default subcarrier, and by described at least two
Mutually orthogonal default subcarrier is handled, and transmitting signal is obtained；
It triggers the transmitting pole plate and emits the transmitting signal to the reception pole plate；
Receive the reception signal of pole plate；And the reception signal is handled, it is mutually orthogonal to obtain at least two
The corresponding range value of default subcarrier；
According to the described at least two mutually orthogonal corresponding range values of default subcarrier, corresponding resistivity is obtained；
The resistivity is sent to ground-based server, so that the ground-based server is according to each resistivity, is obtained
Take the data on stratum in the well；
Wherein, the corresponding at least two mutually orthogonal default subcarrier of different transmitting pole plates is different.
The present invention provides a kind of well logging apparatus and logging method, wherein well logging apparatus includes: pole plate and is electrically connected with pole plate
Processor；Wherein, each pole plate includes: transmitting pole plate and reception pole plate；Emit pole plate, respectively with processor and reception pole plate
Electrical connection, under the control of a processor, generating at least two mutually orthogonal default subcarrier corresponding with transmitting pole plate；
And handle at least two mutually orthogonal default subcarriers, transmitting signal is obtained, and trigger transmitting pole plate to receiving pole
Plate transmitting transmitting signal；Processor is electrically connected with reception pole plate respectively, for receiving the reception signal for receiving pole plate, and docks
The collection of letters number is handled, and obtains at least two mutually orthogonal corresponding range values of default subcarrier, and according at least two phases
The mutually orthogonal corresponding range value of default subcarrier, obtains corresponding resistivity；Resistivity is sent to ground-based server again, with
For ground-based server according to each resistivity, the data on stratum in well are obtained；Wherein, different transmitting pole plates corresponding at least two
A mutually orthogonal default subcarrier is different.The present invention generates corresponding with transmitting pole plate at least two mutually just by processor
The default subcarrier handed over；And at least two mutually orthogonal default subcarriers are subjected to processing and are sent to reception pole plate, and are docked
The collection of letters number is handled, and at least two mutually orthogonal corresponding range values of default subcarrier are obtained, mutually just at least two
The corresponding range value of default subcarrier handed over is handled, and is obtained corresponding resistivity, is realized under the control of a processor
The subcarrier for emitting multiple and different frequencies in a cycle simultaneously, improves the signal-to-noise ratio of resistivity, and substantially reduce survey
The well time, improve logging efficiency.
Detailed description of the invention
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment in the invention of this reality, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is electrical log system basic principle schematic in the prior art；
Fig. 2 is the structural schematic diagram of well logging apparatus embodiment one provided in an embodiment of the present invention；
Fig. 3 is assignable subcarrier in embodiment one；
Fig. 4 is the structural schematic diagram of well logging apparatus embodiment two provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of well logging apparatus embodiment three provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of well logging apparatus example IV provided in an embodiment of the present invention；
Fig. 7 is the flow chart of logging method provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 2 is the structural schematic diagram of well logging apparatus embodiment one provided in an embodiment of the present invention；As shown in Fig. 2, this implementation
The well logging apparatus that example provides, comprising: pole plate 100 and the processor 200 being electrically connected with pole plate 100；Wherein, each pole plate 100 wraps
It includes: transmitting pole plate 10 and reception pole plate 20.
In the present embodiment, emit pole plate 10, be electrically connected respectively with processor 200 and reception pole plate 20, for handling
Under the control of device 200, at least two mutually orthogonal default subcarrier corresponding with transmitting pole plate 10 is generated；And by least two
Mutually orthogonal default subcarrier is handled, and transmitting signal is obtained, and is triggered transmitting pole plate 10 and emitted transmitting to pole plate is received
Signal；Processor 200 is electrically connected with reception pole plate 20 respectively, for receiving the reception signal for receiving pole plate 20, and docks the collection of letters
It number is handled, obtains at least two mutually orthogonal corresponding range values of default subcarrier, and mutually just according at least two
The corresponding range value of default subcarrier handed over, obtains corresponding resistivity；Resistivity is sent to ground-based server (in figure not again
Show), so that ground-based server is according to each resistivity, obtain the data on stratum in well.Wherein, different transmitting pole plates 10 is right
The mutually orthogonal default subcarrier of at least two answered is different.
Specifically, including a transmitting pole plate 10 and a reception pole plate 20 in each pole plate 100, and the two is mutually right
It answers.
Optionally, in actual underground work, due to well be it is cylindrical, in all directions of the borehole wall, rock structure
Not identical at situation, therefore, it is necessary to place at least one pole plate 100.Specifically, can place 6 pole plates 100 is close to the borehole wall
To reach 60 degree of resolution ratio, it is to be understood that the quantity of pole plate 100 is not limited thereto, during actual job
Required resolution ratio determines.
Wherein, receiving pole plate includes at least one button electrode, specifically, including 2 button electricity in each button electrode
Pole, i.e., a pair of of button electrode, each button electrode measurement obtain the signal received on pole plate be actually two button units it
Between voltage difference.Further, the quantity of button electrode can be multiple, and in actual job, the quantity of button electrode is more,
The resolution ratio of horizontal direction is better, but increasing with quantity, and it is higher to will lead to resistivity logging device manufacture difficulty, in reality
It goes into the well in operation process on border, it is preferable that include 5 button electrodes in each reception pole plate.
Optionally, according to controller local area network's (Controller Area Network, abbreviation CAN) bus by resistance
Rate is sent to ground-based server.
In the present embodiment, during actual job, under the control of processor 200, it is right with transmitting pole plate 10 to generate
The mutually orthogonal default subcarrier of at least two answered, it should be noted that in the case where for multiple pole plates, each emitter
In the transmitting signal of plate include subcarrier be all it is mutually orthogonal, Fig. 3 be embodiment one in assignable subcarrier, such as Fig. 3
Shown, Fig. 3 is illustrated by taking 64 subcarriers as an example, and optionally, processor can be emitter plate distribution 1,2,3 and 4
Subcarrier distributes 5,6,7 and 8 subcarriers for another transmitting pole plate, is multiple transmitting pole plates point in a manner of this continuous dispensing
Sub-carriers or processor can distribute 1,7,13,19 subcarriers for emitter plate, and another transmitting pole plate distributes 2,8,14,
20 subcarriers, with the method for salary distribution of this frequency interlacing.It is influenced not caused by interference between different configuration method sub-carriers
Together, determine which configuration method selected with specific reference to actual conditions.In order to further increase the signal-to-noise ratio of resistivity, usually handle
Device 200 is the method for salary distribution that multiple transmitting pole plates select frequency interlacing.Certainly, the present invention is not limited thereto.
Optionally, the quantity of the distributable subcarrier of processor 200 meets 2nIt is a.
In the present embodiment, during actual job, since resistivity is for frequency and insensitive, in order to improve noise
Than the present invention carries out resistivity measurement using the subcarrier of the multiple and different frequencies of transmitting in transmitter same period, surveys to reduce
Measure the time.
Well logging apparatus provided by the invention includes: pole plate and the processor that is electrically connected with pole plate；Wherein, each pole plate packet
It includes: transmitting pole plate and reception pole plate；Emit pole plate, is electrically connected respectively with processor and reception pole plate, for the control in processor
Under system, at least two mutually orthogonal default subcarrier corresponding with transmitting pole plate is generated；And it is mutually orthogonal by least two
Default subcarrier is handled, and transmitting signal is obtained, and is triggered transmitting pole plate and emitted transmitting signal to pole plate is received；Processor,
It is electrically connected with reception pole plate, is handled for receiving the reception signal for receiving pole plate, and to signal is received respectively, obtained at least
Two mutually orthogonal corresponding range values of default subcarrier, and it is corresponding according at least two mutually orthogonal default subcarriers
Range value obtains corresponding resistivity；Resistivity is sent to ground-based server again, so that ground-based server is according to each resistance
Rate obtains the data on stratum in well；Wherein, the different corresponding at least two mutually orthogonal default subcarriers of transmitting pole plate is not
Together.The present invention generates at least two mutually orthogonal default subcarrier corresponding with transmitting pole plate by processor；And it will at least
Two mutually orthogonal default subcarriers carry out processing and are sent to reception pole plate, and handle signal is received, and obtain at least
Two mutually orthogonal corresponding range values of default subcarrier, at least two mutually orthogonal corresponding amplitudes of default subcarrier
Value is handled, and corresponding resistivity is obtained, realize under the control of a processor in one cycle and meanwhile emit it is multiple not
The subcarrier of same frequency, improves the signal-to-noise ratio of resistivity, and substantially reduces log-time, improves logging efficiency.
Further, Fig. 4 is the structural schematic diagram of well logging apparatus embodiment two provided in an embodiment of the present invention, such as Fig. 4 institute
Show, in the embodiment of the present invention two, on the basis of the technical solution that embodiment one describes, processor 200, comprising: send
Module 210, receiving module 220 and processing module 230.
In the present embodiment, sending module 210 are connect, in processing module with processing module 230 and transmitting pole plate 10
Under 230 control, at least two mutually orthogonal default subcarrier corresponding with transmitting pole plate 10 is generated；And by least two phases
Mutually orthogonal default subcarrier carries out inverse Fourier transform processing, obtains transmitting signal, and triggers transmitting pole plate 10 to receiving pole
The transmitting transmitting signal of plate 20；Receiving module 220 is connect, in processing module 230 with processing module 230 and reception pole plate 20
Control under, receive receive pole plate 20 reception signal, and to receive signal carry out Fourier transformation processing, obtain at least two
The mutually orthogonal corresponding range value of default subcarrier, and according at least two mutually orthogonal corresponding amplitudes of default subcarrier
Value, processing module 230 are obtained for at least two mutually orthogonal corresponding range values of default subcarrier to be averaging processing
Take corresponding resistivity；Processing module 230, the resistivity for being also used to will acquire are sent to ground-based server, for ground clothes
Device be engaged according to each resistivity, obtains the data on stratum in well.
Specifically, in the present embodiment, sending module 210, comprising: the subcarrier maps list being connect with processing module 230
Member 211, the serioparallel exchange unit 212 that is connect with subcarrier mapping unit 211 and with serioparallel exchange unit 212 and emit pole plate
The inverse Fourier transform unit 213 of connection.
Subcarrier mapping unit 211, it is corresponding at least with transmitting pole plate for generating under the control of processing module 230
Two mutually orthogonal default subcarriers；Serioparallel exchange unit 212 is electrically connected with inverse Fourier transform unit 213, near
Few two mutually orthogonal default subcarriers are converted into parallel signal；Inverse Fourier transform unit 213, for being converted into
The mutually orthogonal default subcarrier of at least two of parallel signal carries out inverse Fourier transform processing, generates transmitting signal.
Specifically, what is stored in subcarrier mapping unit 211 is one 2nEach element and preset 2 in the vector of dimensionn's
Subcarrier corresponds, wherein the value in each element of vector is 0 or 1, if value is 1, illustrates that processor selection is corresponding
Subcarrier generates transmitting signal, if 0, then illustrates processor and the non-selected subcarrier generates transmitting signal.
Inverse Fourier transform processing is technical means commonly used by such a person skilled in the art, and details are not described herein.
Optionally, processing module 230 can be micro-control unit (Microcontroller Unit, abbreviation MCU), center
Processing unit (Central Processing Unit, abbreviation CPU) can also be digital signal processor (Digital
Signal Processor, abbreviation DSP).
In the present embodiment, it is mutually orthogonal pre- that corresponding with pole plate is emitted at least two are generated by sub-carrier mapping module
If subcarrier, and Fourier inverse transform module sub-carrier has carried out inverse Fourier transform coarse grain, and will pass through Fourier's inversion
Changing treated, subcarrier is converted into serial signal, generates transmitting signal, realizes same period while emitting multiple frequencies
Subcarrier, shorten log-time, and improve logging efficiency.
Specifically, in the present embodiment, receiving module 220 include: with receive parallel serial conversion unit 221 that pole plate 20 connect,
The Fourier transform unit 222 being connect with parallel serial conversion unit and the subcarrier demapping being connect with Fourier transform unit 222
Unit 223.
Wherein, parallel serial conversion unit 221 are converted to serial signal for that will receive the received reception signal of pole plate 20；Fu
In leaf transformation unit 222, for after converting parallel data carry out Fourier transformation processing, generate the second modulated signal；Son
It is mutually orthogonal pre- to obtain at least two for carrying out demapping processing according to the second modulated signal for carrier demapping unit 223
If the corresponding range value of subcarrier, and according at least two mutually orthogonal corresponding range values of default subcarrier, at least two
A mutually orthogonal corresponding range value of default subcarrier is averaging processing, and obtains corresponding resistivity.
Specifically, Fourier transformation processing is technical means commonly used by such a person skilled in the art, details are not described herein.
In the present embodiment, parallel data is converted to by the way that the received serial data of pole plate will be received；It will be parallel after conversion
Data carry out Fourier transformation processing, generate the second modulated signal；Demapping processing is carried out according to the second modulated signal, is obtained extremely
Few two mutually orthogonal corresponding range values of default subcarrier, and it is corresponding according at least two mutually orthogonal default subcarriers
Range value, at least two mutually orthogonal corresponding range values of default subcarrier are averaging processing, corresponding electricity is obtained
Resistance rate.Receiving module of the invention is correspondingly arranged with sending module, is realized same period with sending module cooperation and is emitted simultaneously
The subcarrier of multiple frequencies shortens log-time, and improves logging efficiency.
Further, Fig. 5 is the structural schematic diagram of well logging apparatus embodiment three provided in an embodiment of the present invention, such as Fig. 5 institute
Show, in the embodiment of the present invention three, on the basis of the technical solution that embodiment two describes, sending module 210 further include: the
One AD conversion unit 214 and the first amplifying unit 215.
First AD conversion unit 214 is connect with inverse Fourier transform unit 213 and the first amplifying unit 215；For inciting somebody to action
The signal that inverse Fourier transform unit 213 exports is converted to analog signal；First amplifying unit 215 is connect with transmitting pole plate 10,
For amplifying the transmitting signal for being converted into analog signal, transmitting pole plate is sent to will convert into the transmitting signal of analog signal
10。
In the present embodiment, it is to reduce noise to amplify transmitting signal that the first amplification module is arranged in sending module
Interference to transmitting signal improves the accuracy of resistivity measurement, and the first analog-to-digital conversion module 213 of setting is to emit letter
Number it is converted into the digital signal being suitble in transmission, the further accuracy for improving resistivity measurement.
In addition, in well logging apparatus provided in this embodiment, receiving module further include: the second amplifying unit 224 and the second mould
Number converting unit 225.
Wherein, the second amplifying unit 224 is electrically connected with reception pole plate 20 and the second AD conversion unit 225；For amplifying
Receive the reception signal of pole plate；Second AD conversion unit 225, is electrically connected with parallel serial conversion unit 221, and being used for will be amplified
The reception signal for receiving pole plate 20 is converted to digital signal；Then parallel serial conversion unit 221 is converted into the reception letter of digital signal
Number carry out parallel-serial conversion processing；Fourier transformation module carries out Fourier's change to parallel-serial conversion treated digital signal is carried out
It changes.
In the present embodiment, it is to amplify and receive the received letter of pole plate that the second amplification module is arranged in receiving module
Number, reduce interference of the noise to the signal received, improve the accuracy of resistivity measurement, the second analog-to-digital conversion module of setting is
In order to which the signal received is converted into analog signal, it is able to carry out Fourier transform.
Further, Fig. 6 is the structural schematic diagram of well logging apparatus example IV provided in an embodiment of the present invention；In above-mentioned reality
On the basis of the technical solution for applying example, as shown in fig. 6, sending module 210 further include: cyclic prefix is inserted into unit 216；Wherein,
Cyclic prefix is inserted into unit 216, is electrically connected respectively with serioparallel exchange unit 213 and the first AD conversion unit 214, for sending out
Cyclic prefix is added before penetrating signal.
Then receiving module 220 further include: cyclic prefix removal unit 226；Wherein, cyclic prefix removal unit 226, respectively
It is electrically connected with the second AD conversion unit 225 and parallel serial conversion unit 221, for removing cyclic prefix.
Specifically, in the present embodiment, cyclic prefix is added before emitting signal, to protect the orthogonality of transmitting signal.
Increase in receiving signal and remove cyclic prefix, to guarantee to receive the accuracy of signal.
Specifically, in the present embodiment, before the cyclic prefix insertion unit in sending module and the circulation in receiving module
Sew removal unit to be correspondingly arranged, that is to say, that have the cyclic prefix insertion module in sending module that must just have reception mould
Cyclic prefix removal unit in block, if being not provided with cyclic prefix insertion unit in sending module, in receiving module
It is not provided with cyclic prefix removal unit.
In the present embodiment, it is more in order to overcome subcarrier when underground is transmitted that setting cyclic prefix, which is inserted into unit,
Diameter effect avoids generating intersymbol interference.
In conjunction with above-described embodiment, the main operational principle of the well logging apparatus are as follows: subcarrier mapping unit is in processing module
Under control, at least two mutually orthogonal default subcarrier corresponding with transmitting pole plate, serioparallel exchange unit, near are generated
Few two mutually orthogonal default subcarriers are converted into parallel signal；Inverse Fourier transform unit is used for parallel to being converted into
The mutually orthogonal default subcarrier of at least two of signal carries out inverse Fourier transform processing, generates transmitting signal.First modulus
The signal that inverse Fourier transform unit exports is converted to analog signal by converting unit；First amplifying unit, for amplifying conversion
It is sent to transmitting pole plate at the transmitting of analog signal, and will convert into the transmitting signal of analog signal, emits pole plate to reception
Pole plate transmitting transmitting signal, is handled the signal received for receiving pole plate, specifically, the second amplifier, amplification is received
Pole plate received signal；Amplified reception pole plate received signal is converted to digital signal by the second AD conversion unit；Then
Digital signal after conversion is carried out parallel-serial conversion processing by parallel serial conversion unit；Fourier transform unit is by after conversion and line number
According to Fourier transformation processing is carried out, the second modulated signal is generated；Subcarrier de-mapping unit is solved according to the second modulated signal
Mapping processing, obtains at least two mutually orthogonal corresponding range values of default subcarrier, and mutually orthogonal according at least two
The corresponding range value of default subcarrier, average place is carried out at least two mutually orthogonal corresponding range values of default subcarrier
Reason, obtains corresponding resistivity.Resistivity is sent to ground-based server, so that ground-based server is according to each resistivity, is obtained
Take the data on stratum in well.
Fig. 7 is the flow chart of logging method provided in an embodiment of the present invention；As shown in fig. 7, this method, specifically includes following
Step:
Step S301, generation and the corresponding at least two mutually orthogonal default subcarrier of transmitting pole plate, and will at least two
A mutually orthogonal default subcarrier is handled, and transmitting signal is obtained.
Wherein, the corresponding at least two mutually orthogonal default subcarrier of different transmitting pole plates is different.
Step S302, triggering transmitting pole plate emits signal to pole plate transmitting is received.
Step S303, the reception signal for receiving pole plate is obtained；And handle signal is received, obtain at least two mutually
The orthogonal corresponding range value of default subcarrier.
Step S304, according at least two mutually orthogonal corresponding range values of default subcarrier, corresponding resistance is obtained
Rate.
Step S305, resistivity is sent to ground-based server, so that ground-based server is according to each resistivity, obtains well
The data on middle stratum.
It should be noted that the executing subject of the technical solution of above-mentioned execution Fig. 7 embodiment of the method is embodiment one to reality
The well logging apparatus in example four is applied, it is similar that the realization principle and technical effect are similar, and details are not described herein.
Further, step S301 includes: that at least two mutually orthogonal default subcarriers are carried out inverse Fourier transform
Processing obtains transmitting signal.Correspondingly, step S303 includes: to obtain at least two to signal progress Fourier transformation processing is received
A mutually orthogonal corresponding range value of default subcarrier.
In addition, step S304 includes: according at least two mutually orthogonal corresponding range values of default subcarrier, at least
Two mutually orthogonal corresponding range values of default subcarrier are averaging processing, and obtain corresponding resistivity.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of well logging apparatus characterized by comprising pole plate and the processor being electrically connected with the pole plate；
Wherein, the pole plate includes: transmitting pole plate and reception pole plate；
The transmitting pole plate is electrically connected, for the control in the processor respectively with the processor and the reception pole plate
Under, generate at least two mutually orthogonal default subcarrier corresponding with the transmitting pole plate；And mutually by described at least two
Orthogonal default subcarrier is handled, and transmitting signal is obtained, and is triggered the transmitting pole plate and emitted institute to the reception pole plate
State transmitting signal；
The processor is electrically connected with the reception pole plate, for receiving the reception signal for receiving pole plate, and is connect to described
Collect mail and number handled, obtain at least two mutually orthogonal corresponding range value of default subcarrier, and according to it is described extremely
Few two mutually orthogonal corresponding range values of default subcarrier, obtain corresponding resistivity；
Wherein, the corresponding at least two mutually orthogonal default subcarrier of different transmitting pole plates is different；
The processor includes: sending module, receiving module and processing module；
The sending module is connect with the processing module and the transmitting pole plate, under the control of the processing module,
Generate at least two mutually orthogonal default subcarrier corresponding with the transmitting pole plate；And it is mutually orthogonal by described at least two
Default subcarrier carry out inverse Fourier transform processing, obtain transmitting signal, and trigger the transmitting pole plate to the receiving pole
Plate emits the transmitting signal；
The receiving module is connect with the processing module and the reception pole plate, under the control of the processing module,
The reception signal for receiving pole plate is received, and Fourier transformation processing is carried out to the reception signal, obtains described at least two
A mutually orthogonal corresponding range value of default subcarrier；
The processing module, for according to the described at least two mutually orthogonal corresponding range values of default subcarrier, to described
At least two mutually orthogonal corresponding range values of default subcarrier are averaging processing, and obtain corresponding resistivity；
The processing module is also used to the resistivity got being sent to ground-based server, for the ground service
Device obtains the data on stratum in well according to each resistivity.
2. the apparatus according to claim 1, which is characterized in that the sending module includes:
Subcarrier mapping unit is connect with the processing module and serioparallel exchange unit, for the control in the processing module
Under, generate at least two mutually orthogonal default subcarrier corresponding with the transmitting pole plate；
The serioparallel exchange unit is electrically connected with the inverse Fourier transform unit, for mutually orthogonal pre- by least two
If subcarrier is converted into parallel signal；
The inverse Fourier transform unit, for the default son mutually orthogonal to be converted into parallel signal described at least two
Carrier wave carries out inverse Fourier transform processing, generates transmitting signal.
3. the apparatus of claim 2, which is characterized in that the receiving module, comprising:
Parallel serial conversion unit is electrically connected, for the control in the processing module with the reception pole plate and Fourier transform unit
Under system, the received reception signal of reception pole plate is converted into serial signal；
The Fourier transform unit is electrically connected with subcarrier de-mapping unit, for by the parallel data after the conversion into
The processing of row Fourier transformation, generates the second modulated signal；
The subcarrier de-mapping unit, for carrying out demapping processing according to second modulated signal, acquisition is described at least
Two mutually orthogonal corresponding range values of default subcarrier, and according to described at least two mutually orthogonal default subcarriers pair
The described at least two mutually orthogonal corresponding range values of default subcarrier are averaging processing in the range value answered, acquisition pair
The resistivity answered.
4. device according to claim 3, which is characterized in that the sending module further include:
First AD conversion unit is connect with the inverse Fourier transform unit and the first amplifying unit；For will be in Fu
The transmitting signal of leaf inverse transformation block output is converted to analog signal；
First amplifying unit is connect with the transmitting pole plate, for amplifying the transmitting signal for being converted into analog signal,
The transmitting signal for being converted into analog signal is sent to the transmitting pole plate.
5. device according to claim 4, which is characterized in that the receiving module further include:
Second amplifying unit is electrically connected with the reception pole plate and the second AD conversion unit；For amplifying the reception pole plate
Reception signal；
Second AD conversion unit, is electrically connected with the parallel serial conversion unit, for receiving connecing for pole plate for amplified
The collection of letters number is converted to digital signal；
The then parallel serial conversion unit, the reception signal for being converted into digital signal carry out parallel-serial conversion processing；So that Fu
In leaf transformation unit carry out Fourier transformation to parallel-serial conversion treated digital signal is carried out.
6. device according to claim 5, which is characterized in that the sending module further include: cyclic prefix is inserted into unit；
Wherein,
The cyclic prefix is inserted into unit, is electrically connected respectively with the inverse Fourier transform unit and first AD conversion unit
It connects, for adding cyclic prefix before emitting signal；
The then receiving module further include: cyclic prefix removal unit；Wherein,
The cyclic prefix removal unit is electrically connected with second AD conversion unit and the parallel serial conversion unit respectively,
For removing the cyclic prefix.
7. a kind of logging method applied to any one of claim 1 to 6 well logging apparatus characterized by comprising
At least two mutually orthogonal default subcarrier corresponding with transmitting pole plate is generated, and mutually orthogonal by described at least two
Default subcarrier handled, obtain transmitting signal；
It triggers the transmitting pole plate and emits the transmitting signal to the reception pole plate；
Obtain the reception signal for receiving pole plate；And the reception signal is handled, it is mutually orthogonal pre- to obtain at least two
If the corresponding range value of subcarrier；
According to the described at least two mutually orthogonal corresponding range values of default subcarrier, corresponding resistivity is obtained；
The resistivity is sent to ground-based server, so that the ground-based server is according to each resistivity, obtains institute
State the data on stratum in well；
Wherein, the corresponding at least two mutually orthogonal default subcarrier of different transmitting pole plates is different；By described at least two
Mutually orthogonal default subcarrier is handled, and transmitting signal is obtained, comprising:
Described at least two mutually orthogonal default subcarriers are subjected to inverse Fourier transform processing, obtain transmitting signal；
It is then described that the reception signal is handled, obtain at least two mutually orthogonal corresponding amplitudes of default subcarrier
Value, comprising:
Fourier transformation processing is carried out to the reception signal, obtains at least two mutually orthogonal corresponding width of default subcarrier
Angle value；According to the described at least two mutually orthogonal corresponding range values of default subcarrier, corresponding resistivity is obtained, comprising:
It is mutually orthogonal to described at least two according to the described at least two mutually orthogonal corresponding range values of default subcarrier
The default corresponding range value of subcarrier is averaging processing, and obtains corresponding resistivity.
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