CN114200523B - Method, device and storage medium for compensating single shot frequency loss of controllable seismic source - Google Patents
Method, device and storage medium for compensating single shot frequency loss of controllable seismic source Download PDFInfo
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- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
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- G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
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- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
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Abstract
The invention provides a method, a device, a storage medium and computer equipment for compensating the frequency deficiency of a single shot of a controllable earthquake focus in a desert. The invention can effectively improve the data quality of the controllable earthquake focus single cannon in the desert area, effectively widen the frequency band, compensate the missing components in the frequency band and finally improve the imaging effect of the target layer.
Description
Technical Field
The invention belongs to the technical field of oil and gas geophysical exploration, and particularly relates to a method, a device, a storage medium and computer equipment for compensating for single shot frequency loss of a controllable seismic source.
Background
The controllable earthquake focus seismic acquisition technology is an important seismic exploration method for the current western complex surface area and is widely applied to various surface conditions. However, many differences in seismic data occur due to the different excitation patterns of the vibroseis and the wellcannon. The well cannon is excited under the near surface, and the controllable seismic source is excited under the surface, so that not only are the types of generated noise different, but also the frequency bandwidths are different. By means of actual data analysis, the frequency band of the controllable vibration source is narrower than that of the well cannon, so that relatively speaking, how to effectively compensate the controllable vibration source data is the problem that needs to be solved.
The current method for frequency compensation of the controllable source data can not solve the problem of signal to noise ratio, and after compensation, although the frequency band is obviously widened, the signal to noise ratio of a single shot is reduced, so that the quality of the data is reduced.
Disclosure of Invention
Aiming at the problems, the invention provides a method, a device, a storage medium and computer equipment for compensating the single shot frequency deficiency of a controllable source.
The invention provides a method for compensating the single shot frequency loss of a controllable seismic source, which specifically comprises the following steps:
The method comprises the steps of acquiring seismic wave signals generated by a controllable seismic source single gun and a well gun excited at the same place by adopting detectors in the same arrangement;
performing spectrum analysis on the obtained seismic wave signals of the controllable focus single cannon and the well cannon, and extracting first arrival waveforms of the controllable focus single cannon and the well cannon from the obtained seismic wave signals;
determining wavelets of the controllable focus single cannon and the well cannon according to first arrival waveforms of the controllable focus single cannon and the well cannon, and calculating a frequency band compensation factor for compensating the frequency deficiency of the controllable focus single cannon by utilizing the wavelets of the controllable focus single cannon and the well cannon;
denoising the seismic wave signals of the controllable seismic source single cannon;
And carrying out band compensation on the seismic wave signals of the controlled source single shot subjected to the denoising treatment by using the band compensation factors.
According to one embodiment of the present invention, the excitation parameters of the single shot of the controllable source and the well shot excited at the same location are identical to each other.
According to an embodiment of the present invention, the spectrum analysis of the obtained seismic signals of the vibroseis mono-gun and the well gun includes the following steps:
normalizing the frequency spectrums of the obtained seismic wave signals of the controllable earthquake focus single cannon and the well cannon so that the maximum energy of the seismic wave signals of the controllable earthquake focus single cannon and the well cannon tend to be consistent;
and comparing the frequency bands of the frequency spectrums of the seismic wave signals of the single shot of the controllable earthquake focus and the well shot which are subjected to normalization processing, and determining the missing part of the frequency band of the frequency spectrum of the single shot of the controllable earthquake focus.
According to one embodiment of the present invention, the determining the wavelets of the vibroseis mono-gun and the wellgun according to the first arrival waveforms of the vibroseis mono-gun and the wellgun includes the following steps:
And determining wavelets of the controllable focus single cannon and the well cannon by using an autocorrelation method according to first arrival waveforms of the controllable focus single cannon and the well cannon.
According to one embodiment of the present invention, the calculating the band compensation factor for compensating the frequency deficiency of the single shot of the controllable source by using the wavelets of the single shot of the controllable source and the wellcannon comprises the following steps:
Calculating the inverse wavelet of the controllable focus single gun by using the wavelet of the controllable focus single gun;
and convolving the wavelet of the wellgun with the inverse wavelet of the controllable source single gun to obtain the band compensation factor.
According to an embodiment of the present invention, the band compensation method for performing band compensation on the seismic wave signal of the controlled source single shot subjected to denoising processing by using the band compensation factor includes the following steps:
And carrying out convolution on the seismic wave signals of the controlled source single cannon subjected to noise removal processing and the frequency band compensation factors to obtain the seismic wave signals of the controlled source single cannon after frequency band compensation.
According to an embodiment of the invention, the denoising processing for the seismic wave signal of the controllable source single shot comprises the following steps:
and (3) suppressing the noise of the seismic wave signals of the single shot of the controllable seismic source by adopting a linear noise suppression method.
Furthermore, the invention also provides a device for compensating the single shot frequency loss of the controllable vibration source, which is characterized by comprising the following components:
The signal collection module is used for acquiring seismic wave signals generated by a controllable seismic source single gun and a well gun excited at the same place by adopting detectors in the same arrangement;
The waveform extraction module is used for carrying out spectrum analysis on the obtained seismic wave signals of the controllable focus single cannon and the well cannon and extracting first arrival waveforms of the controllable focus single cannon and the well cannon from the spectrum analysis;
the factor calculation module is used for determining wavelets of the controllable focus single cannon and the well cannon according to first arrival waveforms of the controllable focus single cannon and the well cannon and calculating a frequency band compensation factor for compensating the frequency deficiency of the controllable focus single cannon by utilizing the wavelets of the controllable focus single cannon and the well cannon;
The noise suppression module is used for denoising the seismic wave signals of the controllable seismic source single cannon;
And the frequency band compensation module is used for carrying out frequency band compensation on the seismic wave signals of the controlled source single shot subjected to the denoising processing by utilizing the frequency band compensation factor.
In addition, the invention also provides a computer storage medium, which is characterized in that a computer program capable of being executed by a processor is stored, and the computer program realizes the steps of the method for compensating the single shot frequency loss of the controllable source when being executed by the processor.
The invention also provides computer equipment which is characterized by comprising a memory and a processor, wherein the processor is used for executing a computer program stored in the memory, and the computer program is used for realizing the steps of the method for compensating the single shot frequency loss of the controllable source.
Compared with the prior art, the violent video classification technology integrating internal and external knowledge has the following advantages or beneficial effects:
The invention provides a method for compensating the single shot frequency loss of a controllable earthquake focus in a desert. The method comprises the steps of obtaining seismic wave data of a well gun and a controllable focus single gun excited at the same place through detectors which are arranged at the same place in the same way, analyzing the difference of frequency bands of the well gun and the controllable focus single gun, extracting compensation factors, performing noise pressing processing on the seismic wave data of the controllable focus single gun, applying the compensation factors to the seismic wave data of the controllable focus single gun after noise pressing, and compensating for the missing part of frequencies in the frequency bands of the seismic wave data of the controllable focus single gun. Through practical verification, the compensation method of the invention can effectively improve the data quality of the controllable seismic source single shot in the desert area, effectively widen the frequency band, compensate the missing components in the frequency band and finally improve the imaging effect of the target layer.
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 claims hereof as well as the appended drawings.
Drawings
FIG. 1 is a flow chart of a method for compensating for a single shot frequency loss of a vibroseis in accordance with a first embodiment of the present invention;
fig. 2 is a front-back comparison chart of band compensation results obtained by the method for compensating for the single shot frequency loss of the vibroseis according to the third embodiment of the present invention.
Detailed Description
The whole idea of the invention is as follows: the method comprises the steps of obtaining seismic wave signals of a well gun and a controllable seismic source single gun excited at the same place, analyzing the difference of frequency bands of the well gun and the controllable seismic source single gun, extracting compensation factors according to the difference, simultaneously carrying out noise reduction on the seismic wave signals of the controllable seismic source single gun, and then applying the compensation factors to the seismic wave signals of the controllable seismic source single gun after noise reduction to compensate partial frequencies missing in the frequency bands of the seismic wave signals of the controllable seismic source single gun.
In order to make the technical scheme and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings, thereby solving the technical problems by applying the technical means to the present invention, and realizing the technical effect can be fully understood and implemented according to the technical means.
Example 1
As shown in FIG. 1, the method for compensating the single shot frequency loss of the controllable seismic source mainly comprises the following steps:
The method comprises the steps of acquiring seismic wave signals generated by a controllable seismic source single gun and a well gun excited at the same place by adopting detectors in the same arrangement;
It should be noted that in this step, the excitation parameters of the single shot of the controllable source and the well shot excited at the same location are the same as each other;
Normalizing the frequency spectrums of the obtained seismic wave signals of the controllable earthquake focus single cannon and the well cannon in the same window to enable the maximum energy of the seismic wave signals of the controllable earthquake focus single cannon and the well cannon to be consistent;
comparing the frequency bands of the frequency spectrums of the seismic wave signals of the controllable earthquake focus single cannon and the well cannon after normalization processing, and analyzing the difference between the frequency spectrums to determine the missing part of the frequency band of the frequency spectrum of the controllable earthquake focus single cannon;
Determining wavelets of the controllable focus mono-cannons and the well cannons by preferably using an autocorrelation method according to first arrival waveforms of the controllable focus mono-cannons and the well cannons, calculating inverse wavelets of the controllable focus mono-cannons according to the wavelets of the controllable focus mono-cannons, and carrying out convolution on the wavelets of the well cannons and the inverse wavelets of the controllable focus mono-cannons to obtain band compensation factors;
Meanwhile, denoising the seismic wave signals of the controllable seismic source single cannon;
And carrying out convolution on the seismic wave signals of the controlled source single cannon subjected to noise removal processing and the frequency band compensation factors to obtain the seismic wave signals of the controlled source single cannon after frequency band compensation.
The method can effectively improve the data quality of the controllable focus single shot, effectively widen the frequency band, compensate the missing components in the frequency band and achieve the imaging effect of improving the target layer.
Example two
The detailed steps of the method for compensating the single shot frequency loss of the controllable vibration source provided by the invention are specifically described below.
Step 1, acquiring seismic wave signals generated by a controllable seismic source single gun and a well gun excited at the same place by adopting detectors arranged in the same place in the desert, wherein the parameters for exciting the controllable seismic source and the well gun are excitation parameters adopted in normal production.
And 2, after acquiring the seismic wave data of the two single guns, performing spectrum analysis indoors, overlapping and displaying the spectrums of the two single guns in the same analysis window, and performing normalization processing on the seismic wave data of the two single guns to enable the maximum energy of the seismic wave signals of the two single guns to be consistent, and then comparing the frequency bands. According to the comparison result, the frequency band of the seismic wave data of the well cannon can be found out, the frequency band of the seismic wave data of the controllable seismic source single cannon is narrow, and the frequency of the seismic wave data of the controllable seismic source single cannon is missing relative to the seismic wave data of the well cannon. And then respectively extracting first arrival waveforms of the seismic wave data of the two single shots.
And 3, obtaining wavelets corresponding to first arrival waveforms of seismic wave data of the two single guns by adopting an autocorrelation method, wherein the wavelets of the well gun are marked as A, the wavelets of the controllable seismic source are marked as B, the inverse wavelets of the controllable seismic source are marked as B -1, and if a compensation factor X exists between the wavelets of the well gun and the wavelets of the controllable seismic source, A=B=X, and X is obtained to be X=A×B -1, so that the inverse wavelets of the controllable seismic source can be obtained by the wavelet convolution of the well gun. After the frequency band compensation factor is obtained by the method, the frequency band compensation can be carried out on the seismic wave data of the single shot of the controllable seismic source.
Step 4, however, taking into account the presence of noise disturbances in the seismic data of the vibroseis mono-gun, can adversely affect the results of the band compensation. Therefore, noise in the seismic data of the single shot of the controllable source is also required to be suppressed or eliminated.
And 5, after suppressing or eliminating noise interference of the seismic wave data of the single shot of the controllable seismic source, carrying out convolution on the seismic wave data of the single shot of the controllable seismic source with the suppressed or eliminated noise interference and the frequency band compensation factor obtained in the step 3, and obtaining the seismic wave data of the single shot of the controllable seismic source after compensating the frequency band.
Example III
In order to facilitate understanding of the solution and the effects of the embodiments of the present invention, a specific application example is given below. It will be understood by those of ordinary skill in the art that the examples are for ease of understanding only and that any particular details thereof are not intended to limit the present invention in any way.
In order to make the objects, features and advantages of the present invention more comprehensible, the following detailed description is presented in conjunction with the embodiment of fig. 2:
at the same place of desert, the same arranged detectors are used to collect the earthquake wave signals generated by a controllable earthquake focus single gun and a well gun excited by the same place. Wherein, the excitation parameters of the controllable vibration source and the well cannon are all adopted in normal production. For example, the well cannon is excited by using the well depth dosage adopted in production, and the controllable vibration source is excited by using the scanning frequency, the scanning length, the output size, the vibration times, the bench times and the like adopted in normal production.
After the seismic wave signals of the two single guns are obtained, spectrum analysis is carried out indoors, the spectrums of the seismic wave signals of the two single guns are displayed in an overlapping mode in the same analysis window, and normalization processing is carried out on the seismic wave signals of the two single guns, so that the maximum energy of the seismic wave signals of the two single guns tends to be consistent. The frequency band of the earthquake wave signal of the well cannon is wider and the frequency band of the earthquake wave signal of the controllable earthquake focus single cannon is narrower through analyzing and comparing the frequency spectrum, and the frequency band of the earthquake wave signal of the controllable earthquake focus single cannon has a frequency deficiency relative to the frequency band of the earthquake wave signal of the well cannon. And then extracting first arrival waveforms of the two single shots respectively. Among them, a near first arrival waveform is particularly preferable.
The wavelets corresponding to the first arrival waveforms of the two single cannons are obtained by adopting an autocorrelation method, the wavelets of the well cannon are marked as A, the wavelets of the controllable seismic source are marked as B, and the inverse wavelets of the controllable seismic source are marked as B -1. Assuming that a compensation factor X exists between the wellgun wavelet and the vibroseis wavelet, a=b×x, and obtaining X is x=a×b -1. So that the compensation factor can be obtained by convolving the wavelet of the controllable source with the inverse wavelet of the well cannon. When the frequency band compensation factor is obtained by the method, the frequency band compensation factor can be used for carrying out frequency band compensation on the seismic wave signals of the controllable source single shot.
Aiming at a single gun of a controllable seismic source in a desert area, a linear noise suppression method is adopted to suppress noise. In the embodiment, the optimization method obtains the speed of the high-speed layer through the micro-logging data, and then uses the speed information to conduct linear noise suppression on the seismic wave data of the single shot of the controllable seismic source, so that the noise interference of the seismic wave data of the single shot of the controllable seismic source can be effectively removed.
After the linear noise of the seismic wave data of the single shot of the controllable seismic source is eliminated, the data and the band compensation factor are convolved, so that the seismic wave data of the single shot of the controllable seismic source after the band compensation is obtained.
The frequency band compensation is carried out on the controllable seismic source single shot by the method, the uppermost black line segment is the frequency spectrum of the seismic wave data of the well shot, the lowermost black line segment is the frequency spectrum of the seismic wave data of the controllable seismic source single shot, the frequency band of the seismic wave data of the controllable seismic source single shot can be seen to be much narrower than the frequency band of the seismic wave data of the well shot, and the middle gray line segment is the result after the frequency band compensation of the seismic wave data of the controllable seismic source single shot obtained by the method of the invention, the frequency band of the seismic wave data of the controllable seismic source single shot is effectively widened by the graph, and almost has the same frequency band as the seismic wave data of the well shot.
Through practical data verification, the data quality of the controllable source single cannon in the desert area can be effectively improved, the frequency band is effectively widened, missing components in the frequency band are compensated, and finally the imaging effect of a target layer is improved.
Example IV
In this embodiment, an apparatus for compensating for a single shot frequency loss of a controllable source is provided, which includes:
The signal collection module is used for acquiring seismic wave signals generated by a controllable seismic source single gun and a well gun excited at the same place by adopting detectors in the same arrangement;
The waveform extraction module is used for carrying out spectrum analysis on the obtained seismic wave signals of the controllable focus single cannon and the well cannon and extracting first arrival waveforms of the controllable focus single cannon and the well cannon from the spectrum analysis;
The factor calculation module is used for respectively determining wavelets of the controllable focus single cannon and the well cannon according to first arrival waveforms of the controllable focus single cannon and the well cannon and calculating a frequency band compensation factor for compensating the frequency deficiency of the controllable focus single cannon by utilizing the wavelets of the controllable focus single cannon and the well cannon;
The noise suppression module is used for denoising the seismic wave signals of the controllable seismic source single cannon;
And the frequency band compensation module is used for carrying out frequency band compensation on the seismic wave signals of the controlled source single shot subjected to the denoising processing by utilizing the frequency band compensation factor.
The excitation parameters of the controllable source single cannon and the well cannon excited at the same place are the same.
The waveform extraction module is configured to perform spectrum analysis on the obtained seismic wave signals of the controlled source single shot and the well shot by the following steps:
normalizing the frequency spectrums of the obtained seismic wave signals of the controllable earthquake focus single cannon and the well cannon so that the maximum energy of the seismic wave signals of the controllable earthquake focus single cannon and the well cannon tend to be consistent;
and comparing the frequency bands of the frequency spectrums of the seismic wave signals of the single shot of the controllable earthquake focus and the well shot which are subjected to normalization processing, and determining the missing part of the frequency band of the frequency spectrum of the single shot of the controllable earthquake focus.
Wherein the factor calculation module is configured to determine the wavelets of the vibroseis mono-cannons and the wellcannons from the first arrival waveforms of the vibroseis mono-cannons and the wellcannons by:
And determining wavelets of the controllable focus single cannon and the well cannon by using an autocorrelation method according to first arrival waveforms of the controllable focus single cannon and the well cannon.
Wherein the factor calculation module is further configured to calculate a band compensation factor for compensating for a vibroseis single shot frequency deficiency using wavelets of the vibroseis single shot and the wellcannon by:
Calculating the inverse wavelet of the controllable focus single gun by using the wavelet of the controllable focus single gun;
and convolving the wavelet of the wellgun with the inverse wavelet of the controllable source single gun to obtain the band compensation factor.
The noise suppression module is arranged to denoise the seismic wave signals of the single shot of the controllable seismic source by the following steps:
and (3) suppressing the noise of the seismic wave signals of the single shot of the controllable seismic source by adopting a linear noise suppression method.
Wherein the band compensation module is configured to band compensate the denoising processed seismic signals of the vibroseis mono shot with a band compensation factor by:
And carrying out convolution on the seismic wave signals of the controlled source single cannon subjected to noise removal processing and the frequency band compensation factors to obtain the seismic wave signals of the controlled source single cannon after frequency band compensation.
Example five
In this embodiment, a computer storage medium is provided in which a computer program executable by a processor is stored, which computer program, when executed by the processor, implements the steps of the method of compensating for a vibroseis mono-gun frequency deficiency described above.
Example six
In this embodiment, a computer device is provided, which is characterized by including a memory and a processor, where the processor is configured to execute a computer program stored in the memory, where the computer program is configured to implement the following steps of a method for compensating for a single shot frequency loss of a vibroseis:
The method comprises the steps of acquiring seismic wave signals generated by a controllable seismic source single gun and a well gun excited at the same place by adopting detectors in the same arrangement;
performing spectrum analysis on the obtained seismic wave signals of the controllable focus single cannon and the well cannon, and extracting first arrival waveforms of the controllable focus single cannon and the well cannon from the obtained seismic wave signals;
determining wavelets of the controllable focus single cannon and the well cannon according to first arrival waveforms of the controllable focus single cannon and the well cannon, and calculating a frequency band compensation factor for compensating the frequency deficiency of the controllable focus single cannon by utilizing the wavelets of the controllable focus single cannon and the well cannon;
denoising the seismic wave signals of the controllable seismic source single cannon;
And carrying out band compensation on the seismic wave signals of the controlled source single shot subjected to the denoising treatment by using the band compensation factors.
In summary, the present invention provides a method, apparatus and storage medium for compensating for the lack of frequency of a single shot of a controllable source in a desert, and a computer device, which are configured to obtain seismic wave data of a single shot of the controllable source and seismic wave data of the single shot of the controllable source at the same location, compare the difference of frequency bands of the two and extract a compensation factor, perform noise compression processing on the seismic wave data of the single shot of the controllable source, apply the compensation factor to the seismic wave data of the single shot of the controllable source after noise compression, and compensate for the lack of partial frequencies in the frequency bands of the seismic wave data of the single shot of the controllable source. Through practical data verification, the data quality of the controllable source single cannon in the desert area can be effectively improved, the frequency band is effectively widened, missing components in the frequency band are compensated, and finally the imaging effect of a target layer is improved.
It is to be understood that the above-described embodiments of the present disclosure are not limited to the specific steps or materials disclosed herein, but are intended to extend to equivalents of these features as would be understood by one of ordinary skill in the relevant arts. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.
Reference in the specification to "an embodiment" means that a particular feature, or characteristic, described in connection with the embodiment is included in at least one embodiment of the invention. Thus, the appearances of the phrase "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.
Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of software and hardware, various illustrative components and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In a word, the internal knowledge of the multi-scale self-adaptive learning violence features constructed by the invention is closely related to the external knowledge of the scores of the high-level semantic correction model, and the chromatography is clear, so that a complete violence video classification and identification system is formed.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Although the embodiments of the present invention have been described with reference to the preferred embodiments, 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 (9)
1. A method for compensating for a single shot frequency deficiency of a controllable source, comprising the steps of:
The method comprises the steps of acquiring seismic wave signals generated by a controllable seismic source single gun and a well gun excited at the same place by adopting detectors in the same arrangement;
performing spectrum analysis on the obtained seismic wave signals of the controllable focus single cannon and the well cannon, and extracting first arrival waveforms of the controllable focus single cannon and the well cannon from the obtained seismic wave signals;
Determining wavelets of the controllable focus single cannon and the well cannon according to first arrival waveforms of the controllable focus single cannon and the well cannon, and calculating a frequency band compensation factor for compensating the frequency deficiency of the controllable focus single cannon by utilizing the wavelets of the controllable focus single cannon and the well cannon; the method for calculating the frequency band compensation factor for compensating the frequency deficiency of the single shot of the controllable focus by utilizing the wavelets of the single shot of the controllable focus and the well shot comprises the following steps: calculating the inverse wavelet of the controllable focus single gun by using the wavelet of the controllable focus single gun; convoluting the wavelet of the wellgun with the inverse wavelet of the controllable source single gun to obtain the band compensation factor;
denoising the seismic wave signals of the controllable seismic source single cannon;
And carrying out band compensation on the seismic wave signals of the controlled source single shot subjected to the denoising treatment by using the band compensation factors.
2. The method of compensating for the frequency deficiency of a single shot of a vibroseis of claim 1, wherein the firing parameters of the single shot of the vibroseis and the well shot fired at the same location are the same as each other.
3. The method of compensating for the frequency deficiency of a single shot of a vibroseis of claim 1, wherein the performing of the spectral analysis on the acquired seismic signals of the single shot of the vibroseis and the well shot comprises the steps of:
normalizing the frequency spectrums of the obtained seismic wave signals of the controllable earthquake focus single cannon and the well cannon so that the maximum energy of the seismic wave signals of the controllable earthquake focus single cannon and the well cannon tend to be consistent;
and comparing the frequency bands of the frequency spectrums of the seismic wave signals of the single shot of the controllable earthquake focus and the well shot which are subjected to normalization processing, and determining the missing part of the frequency band of the frequency spectrum of the single shot of the controllable earthquake focus.
4. The method of compensating for the frequency deficiency of a single shot of a vibroseis of claim 1, wherein the determining the wavelets of the single shot and the well shot of the vibroseis based on first arrival waveforms of the single shot and the well shot of the vibroseis comprises the steps of:
And determining wavelets of the controllable focus single cannon and the well cannon by using an autocorrelation method according to first arrival waveforms of the controllable focus single cannon and the well cannon.
5. The method for compensating for the frequency deficiency of a single shot of a controllable source according to claim 1, wherein the step of performing the frequency band compensation on the seismic wave signals of the single shot of the controllable source subjected to the denoising treatment by using the frequency band compensation factor comprises the following steps:
And carrying out convolution on the seismic wave signals of the controlled source single cannon subjected to noise removal processing and the frequency band compensation factors to obtain the seismic wave signals of the controlled source single cannon after frequency band compensation.
6. The method for compensating for the frequency deficiency of a single shot of a controllable source according to claim 1, wherein the denoising process is performed on the seismic wave signals of the single shot of the controllable source, and comprises the following steps:
and (3) suppressing the noise of the seismic wave signals of the single shot of the controllable seismic source by adopting a linear noise suppression method.
7. An apparatus for compensating for a lack of single shot frequency of a vibroseis comprising:
The signal collection module is used for acquiring seismic wave signals generated by a controllable seismic source single gun and a well gun excited at the same place by adopting detectors in the same arrangement;
The waveform extraction module is used for carrying out spectrum analysis on the obtained seismic wave signals of the controllable focus single cannon and the well cannon and extracting first arrival waveforms of the controllable focus single cannon and the well cannon from the spectrum analysis;
The factor calculation module is used for determining wavelets of the controllable focus single cannon and the well cannon according to first arrival waveforms of the controllable focus single cannon and the well cannon and calculating a frequency band compensation factor for compensating the frequency deficiency of the controllable focus single cannon by utilizing the wavelets of the controllable focus single cannon and the well cannon; the method for calculating the frequency band compensation factor for compensating the frequency deficiency of the single shot of the controllable focus by utilizing the wavelets of the single shot of the controllable focus and the well shot comprises the following steps: calculating the inverse wavelet of the controllable focus single gun by using the wavelet of the controllable focus single gun; convoluting the wavelet of the wellgun with the inverse wavelet of the controllable source single gun to obtain the band compensation factor;
The noise suppression module is used for denoising the seismic wave signals of the controllable seismic source single cannon;
And the frequency band compensation module is used for carrying out frequency band compensation on the seismic wave signals of the controlled source single shot subjected to the denoising processing by utilizing the frequency band compensation factor.
8. A computer storage medium in which a computer program is stored which, when executed by a processor, implements the steps of the method of compensating for a vibroseis single shot frequency deficiency of any of the preceding claims 1 to 6.
9. A computer device comprising a memory and a processor for executing a computer program stored in the memory for implementing the steps of the method of compensating for a vibroseis mono-gun frequency deficiency as claimed in any of the preceding claims 1 to 6.
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