CN112255681A - Vibroseis frequency reduction scanning data processing method and device - Google Patents
Vibroseis frequency reduction scanning data processing method and device Download PDFInfo
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Abstract
The invention provides a method and a device for processing vibroseis frequency reduction scanning data, wherein the method comprises the following steps: acquiring single-shot seismic record data which are not mutually correlated and are scanned by the vibroseis in an up-conversion and down-conversion mode simultaneously and corresponding down-conversion scanning signals; respectively carrying out time sequence inversion on the single-shot seismic record data and the corresponding frequency reduction scanning signals which are not subjected to cross-correlation and are scanned by the vibroseis in the frequency increasing and frequency reducing way, and obtaining time sequence inverted intermediate data and corresponding scanning signals; performing cross correlation on the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data; and performing time sequence recovery on the inverted seismic single-shot record data to obtain a vibroseis frequency-reduction scanning seismic single-shot record. The device is used for executing the method. The method and the device for processing the vibroseis frequency reduction scanning data improve the signal-to-noise ratio of the data.
Description
Technical Field
The invention relates to the technical field of seismic data processing, in particular to a method and a device for processing vibroseis frequency reduction scanning data.
Background
With the continuous promotion of green exploration, the controllable seismic source is gradually becoming the direction of vigorous popularization and application in future. Under the large situation of low enthusiasm of oil-gas exploration, the acquisition efficiency of the controllable seismic source is improved, the economic benefit of an acquisition project is further improved, and the method is also an important content which needs to be researched for popularizing the controllable seismic source.
At present, in vibroseis seismic acquisition, one of the important factors influencing the production efficiency is vibroseis scanning time, and in order to improve the production efficiency, new technologies such as random scanning, segmented simultaneous scanning, frequency-up and frequency-down simultaneous scanning and the like continuously appear in recent years and greatly improve the production efficiency. In the prior art, no matter what scanning signal is adopted, the original single shot record is obtained by performing cross correlation on the scanning signal and a signal received by a seismic instrument, the method is feasible for the frequency-increasing scanning signal, but for the frequency-reducing scanning signal, the original single shot record obtained by conventional cross correlation generates related noise, and the signal-to-noise ratio of data is reduced.
Therefore, how to provide a method for processing vibroseis down-conversion scanning data to improve the signal-to-noise ratio of data becomes an important issue to be solved in the field.
Disclosure of Invention
For solving the problems in the prior art, embodiments of the present invention provide a method and an apparatus for processing vibroseis down-conversion scanning data, which can at least partially solve the problems in the prior art.
On one hand, the invention provides a method for processing vibroseis frequency-down scanning data, which comprises the following steps:
acquiring single-shot seismic record data which are not mutually correlated and are scanned by the vibroseis in an up-conversion and down-conversion mode simultaneously and corresponding down-conversion scanning signals;
respectively carrying out time sequence inversion on the single-shot seismic record data and the corresponding frequency reduction scanning signals which are not subjected to cross-correlation and are scanned by the vibroseis in the frequency increasing and frequency reducing way, and obtaining time sequence inverted intermediate data and corresponding scanning signals;
performing cross correlation on the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data;
and performing time sequence recovery on the inverted seismic single-shot record data to obtain a vibroseis frequency-reduction scanning seismic single-shot record.
In another aspect, the present invention provides a vibroseis down-conversion scanning data processing apparatus, including:
the acquisition unit is used for acquiring single-shot seismic record data which are not mutually correlated and are scanned by the vibroseis in an up-conversion and down-conversion mode simultaneously and corresponding down-conversion scanning signals;
the time sequence inversion unit is used for respectively carrying out time sequence inversion on the single-shot seismic record data which are simultaneously scanned by the non-correlated vibroseis in the frequency increasing and frequency reducing mode and the corresponding frequency reduction scanning signals to obtain time sequence inverted intermediate data and corresponding scanning signals;
the cross-correlation unit is used for cross-correlating the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data;
and the time sequence recovery unit is used for carrying out time sequence recovery on the inverted seismic single-shot record data to obtain the vibroseis frequency-reduction scanning seismic single-shot record.
In another aspect, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method for processing the vibroseis down-scan data according to any of the above embodiments when executing the computer program.
In yet another aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for processing vibroseis down-scan data according to any of the embodiments described above.
The method and the device for processing the vibroseis frequency-reduction scanning data, provided by the embodiment of the invention, are used for acquiring single-shot seismic record data and corresponding frequency-reduction scanning signals which are simultaneously scanned by up-conversion and down-conversion of a vibroseis without mutual correlation, respectively carrying out time sequence inversion on the single-shot seismic record data and the corresponding frequency-reduction scanning signals which are simultaneously scanned by up-conversion and down-conversion of the vibroseis without mutual correlation, acquiring time sequence inverted intermediate data and corresponding scanning signals, carrying out mutual correlation on the time sequence inverted intermediate data and the corresponding scanning signals, acquiring inverted seismic single-shot record data, carrying out time sequence recovery on the inverted seismic single-shot record data, acquiring the vibroseis frequency-reduction scanning seismic single-shot record, reducing or eliminating related noise and improving the signal-to noise ratio of the data.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
fig. 1 is a schematic flow chart of a method for processing vibroseis down-scan data according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a vibroseis down-scan data processing apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
In order to facilitate understanding of the technical solutions provided in the present application, the following first describes relevant contents of the technical solutions in the present application.
As known from the principle of vibroseis excitation, seismic recordings are obtained using mathematical correlation. The correlation is a cross-correlation operation between the reference scanning signal and the vibration record. The purpose of vibroseis correlation is to compress a long duration sweep signal into a short duration finite bandwidth pulse signal. The correlation process can manifest harmonics generated by the excitation, resulting in correlated noise in the correlated data.
For upsweep, the starting position where the harmonic appears in the recording is:
the end positions where the harmonics appear in the recording are:
where k is the harmonic order, fBTo start the scanning frequency, fETo terminate the scanning frequency, T is the scanning signal length.
For down-scan, the corresponding start-stop times are-tB(fE) And-tE(kfB)。
In vibroseis correlation, the output correlation record retains only the listening period of the forward time shift. According to the formula, after the irrelevant data is relevant to the frequency-up scanning signals, harmonic waves appear on the negative axis of relevant recording time, namely outside single shot records; the harmonic wave appears on the positive axis of the associated recording time, i.e., within the single shot record, after the uncorrelated data correlates with the down-converted scanning signal.
In actual production, up-scan is generally used because harmonic interference occurs outside of the single shot record after the associated recorded data is obtained, and there is no associated noise within the single shot record. However, in practical production, down-conversion scanning is sometimes used, for example, when a vibroseis frequency-increasing and frequency-decreasing synchronous excitation technology is adopted for acquisition, the obtained down-conversion scanning record is correlated with a down-conversion signal to generate correlated noise, and the signal-to-noise ratio of data is reduced. In order to reduce or eliminate correlated noise after the down-scan recording is correlated, the embodiment of the invention provides a method for processing the down-scan data of the vibroseis. The execution subject of the method for processing the vibroseis down-scan data provided by the embodiment of the invention includes but is not limited to a computer.
Fig. 1 is a schematic flow chart of a method for processing vibroseis down-scan data according to an embodiment of the present invention, and as shown in fig. 1, the method for processing vibroseis down-scan data according to the embodiment of the present invention includes:
s101, acquiring single-shot seismic record data and corresponding frequency-down scanning signals of the non-correlated vibroseis subjected to frequency-up and frequency-down simultaneous scanning;
specifically, pre-correlation data can be obtained through field acquisition, and single-shot seismic record data which are not subjected to cross-correlation and are subjected to frequency-up and frequency-down simultaneous scanning by a vibroseis and a corresponding frequency-down scanning signal can be obtained from the pre-correlation data. Wherein the pre-correlation data may be recorded by a seismic instrument.
S102, respectively carrying out time sequence inversion on the single-shot seismic record data and the corresponding frequency-down scanning signals which are simultaneously scanned by the non-correlated vibroseis in the frequency-up and frequency-down manner to obtain time sequence inverted intermediate data and corresponding scanning signals;
specifically, after the single-shot seismic record data which are simultaneously scanned by the unrelevated controllable seismic sources in the frequency-up and frequency-down manner and the corresponding frequency-down scanning signals are obtained, the time sequence inversion is carried out on the single-shot seismic record data which are simultaneously scanned by the unrelevated controllable seismic sources in the frequency-up and frequency-down manner, the time sequence inverted intermediate data are obtained, the time sequence inversion is carried out on the frequency-down scanning signals which are corresponding to the single-shot seismic record data which are simultaneously scanned by the unrelevated controllable seismic sources in the frequency-up and frequency-down manner, the frequency-down scanning signals with the inverted time sequence are obtained, and the frequency-down scanning signals become the frequency-. The time sequence inverted frequency reduction scanning signal corresponds to the time sequence inverted intermediate data and becomes a scanning signal corresponding to the time sequence inverted intermediate data.
For example, if the down-scan signal of a work area is 84-3Hz, the up-scan signal after the time sequence is inverted is 3-84 Hz.
S103, performing cross correlation on the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data;
specifically, after time sequence inverted intermediate data and corresponding scanning signals are obtained, correlation operation is carried out on the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data, namely correlation operation is carried out on non-cross-correlated single-shot seismic record data and up-conversion scanning signals, and according to the correlation characteristics of up-conversion signal harmonics, correlated harmonics cannot appear in the seismic record data, so that the influence of the harmonics on the correlated data is eliminated, and the signal-to-noise ratio of the data is improved. The specific process of the correlation operation is the prior art, and is not described herein.
And S104, performing time sequence recovery on the inverted seismic single-shot record data to obtain a vibroseis frequency-reduction scanning seismic single-shot record.
Specifically, after the inverted seismic single-shot record data is obtained, the time sequence of the non-correlated single-shot seismic record data is inverted, so that the time sequence of the obtained inverted seismic single-shot record data is also inverted, the time sequence of the inverted seismic single-shot record data is inverted, the original time sequence is recovered, and the vibroseis frequency-reduction scanning seismic single-shot record can be obtained.
The method for processing the vibroseis frequency-reduction scanning data, provided by the embodiment of the invention, comprises the steps of obtaining single-shot seismic record data and corresponding frequency-reduction scanning signals which are simultaneously scanned by up-conversion and down-conversion of a vibroseis without mutual correlation, respectively carrying out time sequence inversion on the single-shot seismic record data and the corresponding frequency-reduction scanning signals which are simultaneously scanned by up-conversion and down-conversion of the vibroseis without mutual correlation, obtaining time sequence inverted intermediate data and corresponding scanning signals, carrying out mutual correlation on the time sequence inverted intermediate data and the corresponding scanning signals, obtaining inverted seismic single-shot record data, carrying out time sequence recovery on the inverted seismic single-shot record data, obtaining the vibroseis frequency-reduction scanning seismic single-shot record, reducing or eliminating related noise and improving the signal-to noise ratio of the data.
On the basis of the above embodiments, further, the single-shot seismic record data of the non-correlated vibroseis up-and down-conversion simultaneous scanning is obtained through pre-correlation data, and the pre-correlation data is obtained through vibroseis up-and down-conversion simultaneous scanning and directly recording the received seismic signals by a seismic instrument.
Specifically, when seismic data are acquired in the field, the controllable seismic source performs frequency rising and frequency reduction and simultaneously scans and excites mixed seismic signals, and the seismic instrument does not perform relevant processing on the received seismic signals, directly records the received seismic signals and can acquire relevant pre-data. And obtaining single-shot seismic record data which are not mutually correlated and are scanned by the vibroseis in an ascending frequency and a descending frequency at the same time from the pre-correlation data, wherein the secondary data are the superposition result of the ascending frequency seismic record and the descending frequency seismic record.
For example, when seismic data are acquired in the field, two groups of controllable sources with short interval are used, one group is excited in a linear frequency increasing mode, the other group is excited in a linear frequency reducing mode, the seismic instrument can directly record received seismic signals, and single-shot seismic record data which are scanned by the controllable sources with frequency increasing and frequency reducing and are not correlated can be obtained.
On the basis of the above embodiments, further, the seismic signals are generated by source excitation in different scanning modes.
Specifically, the start-stop frequency of the scanning signal of the work area is determined according to the work area conditions and the test results. The initial low frequency and the termination high frequency of the scanning signal are fixed, the frequency increasing signal adopts an frequency increasing scanning mode, the frequency reducing signal adopts a frequency reducing scanning mode, if the initial frequency of a work area is 3Hz, the termination frequency is 84Hz, the frequency increasing signal is frequency increasing scanning excitation of 3-84Hz, and the frequency reducing signal is frequency reducing scanning excitation of 84-3 Hz. The seismic signals received by the seismic instrument can be excited by two groups of controllable seismic sources, one group is excited by an ascending frequency signal, and the other group is excited by a descending frequency signal, so that the field construction efficiency can be improved, and the acquisition efficiency of the seismic signals is improved.
For example, according to the number of seismic source groups of the project, the seismic source groups are divided into two groups, one group adopts up-conversion scanning, and the other group adopts down-conversion scanning. If a certain project is equipped with 4 groups of seismic sources, 2 groups of seismic sources are excited by the up-conversion signal, and the other two groups of seismic sources are excited by the down-conversion signal, so that the field construction efficiency can be improved to the maximum extent.
On the basis of the above embodiments, further, the seismic sources of the different scanning modes are synchronously excited.
Specifically, when seismic signals are acquired in the field, seismic sources of different scanning modes can be synchronously excited, so that the acquisition efficiency of the seismic signals is improved.
For example, when seismic signals are acquired in the field, two groups of seismic sources with short time intervals are separated, one group is excited in a linear frequency increasing mode, and the other group is excited simultaneously in a linear frequency reducing mode. Because the two scanning signals are basically uncorrelated and the mutual interference of the two groups of seismic sources is small, the seismic signal acquisition efficiency can be approximately improved by 1 time on the premise of not increasing acquisition equipment.
According to the method for processing the vibroseis down-conversion scanning data, the time sequence of the down-conversion scanning irrelevant record and the down-conversion signal is inverted and then correlated, namely the irrelevant record is correlated with the up-conversion signal, the correlated harmonic wave does not appear in the record, the influence of the harmonic wave on the data is eliminated, and the signal to noise ratio of the data is improved.
Fig. 2 is a schematic structural diagram of a vibroseis downsweep data processing apparatus according to an embodiment of the present invention, and as shown in fig. 2, the vibroseis downsweep data processing apparatus according to the embodiment of the present invention includes an obtaining unit 201, a timing inversion unit 202, a cross-correlation unit 203, and a timing recovery unit 204, where:
the obtaining unit 201 is configured to obtain single-shot seismic record data and corresponding down-conversion scanning signals of the non-correlated vibroseis performing up-conversion and down-conversion simultaneous scanning; the time sequence inversion unit 202 is configured to perform time sequence inversion on the single-shot seismic record data and the corresponding down-conversion scanning signals that are simultaneously scanned by the non-correlated controllable seismic sources in an up-conversion and down-conversion manner, respectively, to obtain time sequence inverted intermediate data and corresponding scanning signals; the cross-correlation unit 203 is used for cross-correlating the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single shot record data; the time sequence recovery unit 204 is configured to perform time sequence recovery on the inverted seismic single-shot record data to obtain a vibroseis frequency-reduction scanning seismic single-shot record.
Specifically, pre-correlation data may be obtained through field acquisition, and the obtaining unit 201 may obtain single-shot seismic record data and corresponding down-conversion scanning signals of up-conversion and down-conversion simultaneous scanning of the non-correlated vibroseis from the pre-correlation data. Wherein the pre-correlation data may be recorded by a seismic instrument.
After the single-shot seismic record data scanned by the non-cross-correlated controllable seismic sources in the frequency-up and frequency-down simultaneous manner and the corresponding frequency-down scanning signals are obtained, the time sequence inversion unit 202 performs time sequence inversion on the single-shot seismic record data scanned by the non-cross-correlated controllable seismic sources in the frequency-up and frequency-down simultaneous manner to obtain time sequence inverted intermediate data, performs time sequence inversion on the frequency-down scanning signals corresponding to the single-shot seismic record data scanned by the non-cross-correlated controllable seismic sources in the frequency-up and frequency-down simultaneous manner to obtain time sequence inverted frequency-down scanning signals, and the frequency-down scanning signals become frequency-up scanning signals after the time sequence inversion. The time sequence inverted frequency reduction scanning signal corresponds to the time sequence inverted intermediate data and becomes a scanning signal corresponding to the time sequence inverted intermediate data.
After obtaining the time-sequence inverted intermediate data and the corresponding scanning signals, the cross-correlation unit 203 performs correlation operation on the time-sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data, which is equivalent to performing correlation operation on non-cross-correlated single-shot seismic record data and frequency-up scanning signals. The specific process of the correlation operation is the prior art, and is not described herein.
After the inverted seismic single-shot record data are obtained, the time sequence of the non-correlated single-shot seismic record data is inverted, so that the time sequence of the obtained inverted seismic single-shot record data is also inverted, the time sequence recovery unit 204 inverts the time sequence of the inverted seismic single-shot record data, and the original time sequence is recovered, so that the vibroseis frequency-reduction scanning seismic single-shot record can be obtained.
The device for processing the vibroseis frequency-reduction scanning data, provided by the embodiment of the invention, is used for acquiring single-shot seismic record data and corresponding frequency-reduction scanning signals which are simultaneously scanned by up-conversion and down-conversion of a vibroseis without mutual correlation, respectively carrying out time sequence inversion on the single-shot seismic record data and the corresponding frequency-reduction scanning signals which are simultaneously scanned by up-conversion and down-conversion of the vibroseis without mutual correlation, acquiring time sequence inverted intermediate data and corresponding scanning signals, carrying out mutual correlation on the time sequence inverted intermediate data and the corresponding scanning signals, acquiring inverted seismic single-shot record data, carrying out time sequence recovery on the inverted seismic single-shot record data, acquiring the vibroseis frequency-reduction scanning seismic single-shot record, reducing or eliminating related noise and improving the signal-to noise ratio of the data.
On the basis of the above embodiments, further, the single-shot seismic record data of the non-correlated vibroseis up-and down-conversion simultaneous scanning is obtained through pre-correlation data, and the pre-correlation data is obtained through vibroseis up-and down-conversion simultaneous scanning and directly recording the received seismic signals by a seismic instrument.
Specifically, when seismic data are acquired in the field, the controllable seismic source performs frequency rising and frequency reduction and simultaneously scans and excites mixed seismic signals, and the seismic instrument does not perform relevant processing on the received seismic signals, directly records the received seismic signals and can acquire relevant pre-data. And obtaining single-shot seismic record data of the independent correlated vibroseis up-frequency and down-frequency simultaneous scanning from the pre-correlation data, wherein the data is a superposition result of the up-frequency seismic record and the down-frequency seismic record.
On the basis of the above embodiments, further, the seismic signals are generated by source excitation in different scanning modes.
Specifically, the start-stop frequency of the scanning signal of the work area is determined according to the work area conditions and the test results. The initial low frequency and the termination high frequency of the scanning signal are fixed, the frequency increasing signal adopts an frequency increasing scanning mode, the frequency reducing signal adopts a frequency reducing scanning mode, if the initial frequency of a work area is 3Hz, the termination frequency is 84Hz, the frequency increasing signal is frequency increasing scanning excitation of 3-84Hz, and the frequency reducing signal is frequency reducing scanning excitation of 84-3 Hz. The seismic signals received by the seismic instrument can be excited by two groups of controllable seismic sources, one group is excited by an ascending frequency signal, and the other group is excited by a descending frequency signal, so that the field construction efficiency can be improved, and the acquisition efficiency of the seismic signals is improved.
On the basis of the above embodiments, further, the seismic sources of the different scanning modes are synchronously excited.
Specifically, when seismic signals are acquired in the field, seismic sources of different scanning modes can be synchronously excited, so that the acquisition efficiency of the seismic signals is improved.
The embodiment of the apparatus provided in the embodiment of the present invention may be specifically configured to execute the processing flows of the above method embodiments, and the functions of the apparatus are not described herein again, and refer to the detailed description of the above method embodiments.
Fig. 3 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 3, the electronic device may include: a processor (processor)301, a communication Interface (communication Interface)302, a memory (memory)303 and a communication bus 304, wherein the processor 301, the communication Interface 302 and the memory 303 complete communication with each other through the communication bus 304. Processor 301 may call logic instructions in memory 303 to perform the following method: acquiring single-shot seismic record data which are not mutually correlated and are scanned by the vibroseis in an up-conversion and down-conversion mode simultaneously and corresponding down-conversion scanning signals; respectively carrying out time sequence inversion on the single-shot seismic record data and the corresponding frequency reduction scanning signals which are not subjected to cross-correlation and are scanned by the vibroseis in the frequency increasing and frequency reducing way, and obtaining time sequence inverted intermediate data and corresponding scanning signals; performing cross correlation on the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data; and performing time sequence recovery on the inverted seismic single-shot record data to obtain a vibroseis frequency-reduction scanning seismic single-shot record.
In addition, the logic instructions in the memory 303 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The present embodiment discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the method provided by the above-mentioned method embodiments, for example, comprising: acquiring single-shot seismic record data which are not mutually correlated and are scanned by the vibroseis in an up-conversion and down-conversion mode simultaneously and corresponding down-conversion scanning signals; respectively carrying out time sequence inversion on the single-shot seismic record data and the corresponding frequency reduction scanning signals which are not subjected to cross-correlation and are scanned by the vibroseis in the frequency increasing and frequency reducing way, and obtaining time sequence inverted intermediate data and corresponding scanning signals; performing cross correlation on the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data; and performing time sequence recovery on the inverted seismic single-shot record data to obtain a vibroseis frequency-reduction scanning seismic single-shot record.
The present embodiment provides a computer-readable storage medium, which stores a computer program, where the computer program causes the computer to execute the method provided by the above method embodiments, for example, the method includes: acquiring single-shot seismic record data which are not mutually correlated and are scanned by the vibroseis in an up-conversion and down-conversion mode simultaneously and corresponding down-conversion scanning signals; respectively carrying out time sequence inversion on the single-shot seismic record data and the corresponding frequency reduction scanning signals which are not subjected to cross-correlation and are scanned by the vibroseis in the frequency increasing and frequency reducing way, and obtaining time sequence inverted intermediate data and corresponding scanning signals; performing cross correlation on the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data; and performing time sequence recovery on the inverted seismic single-shot record data to obtain a vibroseis frequency-reduction scanning seismic single-shot record.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In the description herein, reference to the description of the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," "an example," "a particular example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A vibroseis down-conversion scanning data processing method is characterized by comprising the following steps:
acquiring single-shot seismic record data which are not mutually correlated and are scanned by the vibroseis in an up-conversion and down-conversion mode simultaneously and corresponding down-conversion scanning signals;
respectively carrying out time sequence inversion on the single-shot seismic record data and the corresponding frequency reduction scanning signals which are not subjected to cross-correlation and are scanned by the vibroseis in the frequency increasing and frequency reducing way, and obtaining time sequence inverted intermediate data and corresponding scanning signals;
performing cross correlation on the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data;
and performing time sequence recovery on the inverted seismic single-shot record data to obtain a vibroseis frequency-reduction scanning seismic single-shot record.
2. The method of claim 1, wherein the single shot seismic record data for the un-correlated vibroseis up-and down-converted simultaneous sweep is obtained from pre-correlation data obtained from a vibroseis up-and down-converted simultaneous sweep and direct recording of the received seismic signal by a seismic instrument.
3. The method of claim 2, wherein the seismic signals are generated by source excitation of different sweep patterns.
4. The method of claim 3, wherein the sources of different scanning modes are fired simultaneously.
5. A vibroseis down-scan data processing apparatus, comprising:
the acquisition unit is used for acquiring single-shot seismic record data which are not mutually correlated and are scanned by the vibroseis in an up-conversion and down-conversion mode simultaneously and corresponding down-conversion scanning signals;
the time sequence inversion unit is used for respectively carrying out time sequence inversion on the single-shot seismic record data which are simultaneously scanned by the non-correlated vibroseis in the frequency increasing and frequency reducing mode and the corresponding frequency reduction scanning signals to obtain time sequence inverted intermediate data and corresponding scanning signals;
the cross-correlation unit is used for cross-correlating the time sequence inverted intermediate data and the corresponding scanning signals to obtain inverted seismic single-shot record data;
and the time sequence recovery unit is used for carrying out time sequence recovery on the inverted seismic single-shot record data to obtain the vibroseis frequency-reduction scanning seismic single-shot record.
6. The apparatus of claim 5, wherein the single shot seismic record data for the un-correlated vibroseis up-and down-converted simultaneous sweep is obtained from pre-correlation data obtained from the vibroseis up-and down-converted simultaneous sweep and direct recording of the received seismic signal by the seismic instrument.
7. The apparatus of claim 6, wherein the seismic signals are generated by source excitation of different sweep patterns.
8. The apparatus of claim 7, wherein the sources of different scanning modes are fired simultaneously.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1 to 4 are implemented when the computer program is executed by the processor.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
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| CN114200544A (en) * | 2021-11-12 | 2022-03-18 | 中石化石油工程技术服务有限公司 | Vibroseis scanning efficiency evaluation method and device, electronic equipment and storage medium |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042910A (en) * | 1974-10-09 | 1977-08-16 | Deutsche Texaco Aktiengesellschaft | Method of seismic exploration |
| EP0273722A2 (en) * | 1986-12-30 | 1988-07-06 | Gas Research Institute | Signal processing to enable utilization of a rig reference sensor with a drill bit seismic source |
| EP0289670A1 (en) * | 1987-05-05 | 1988-11-09 | Atlantic Richfield Company | Method of suppressing vibration seismic signal correlation noise |
| US4823326A (en) * | 1986-07-21 | 1989-04-18 | The Standard Oil Company | Seismic data acquisition technique having superposed signals |
| US4926392A (en) * | 1986-09-22 | 1990-05-15 | Hand Geophysical | Method and apparatus for obtaining seismic vibrator reflection data |
| US5410517A (en) * | 1994-05-13 | 1995-04-25 | Exxon Production Research Company | Method for cascading sweeps for a seismic vibrator |
| US20060164916A1 (en) * | 2003-08-11 | 2006-07-27 | Krohn Christine E | Method for continuous sweepting and separtion of multiple seismic vibrators |
| CN101680957A (en) * | 2007-02-08 | 2010-03-24 | 科诺科菲利浦公司 | The dynamic source parameter that is used for seismic vibrator data acquisition is selected |
| US20100157733A1 (en) * | 2008-12-23 | 2010-06-24 | Mark Daly | Compensating seismic data for source variations |
| US20120113747A1 (en) * | 2010-11-04 | 2012-05-10 | Ferber Ralf G | Marine Vibroseis Motion Correction |
| CN102478671A (en) * | 2010-11-23 | 2012-05-30 | 中国石油天然气集团公司 | Method for suppressing controllable seismic-source harmonic-wave interference |
| CN106094024A (en) * | 2016-06-21 | 2016-11-09 | 中国石油天然气集团公司 | A kind of controlled source slip scan data acquisition treatment method and device |
| CN108181645A (en) * | 2017-11-24 | 2018-06-19 | 中国石油天然气集团公司 | A kind of controlled source frequency dividing while exciting method, apparatus and system |
| CN109143330A (en) * | 2017-06-27 | 2019-01-04 | 中国石油化工股份有限公司 | A kind of optimization controlled source obtains the method and system of single-shot quality |
-
2020
- 2020-10-26 CN CN202011156264.8A patent/CN112255681B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042910A (en) * | 1974-10-09 | 1977-08-16 | Deutsche Texaco Aktiengesellschaft | Method of seismic exploration |
| US4823326A (en) * | 1986-07-21 | 1989-04-18 | The Standard Oil Company | Seismic data acquisition technique having superposed signals |
| US4926392A (en) * | 1986-09-22 | 1990-05-15 | Hand Geophysical | Method and apparatus for obtaining seismic vibrator reflection data |
| EP0273722A2 (en) * | 1986-12-30 | 1988-07-06 | Gas Research Institute | Signal processing to enable utilization of a rig reference sensor with a drill bit seismic source |
| EP0289670A1 (en) * | 1987-05-05 | 1988-11-09 | Atlantic Richfield Company | Method of suppressing vibration seismic signal correlation noise |
| US5410517A (en) * | 1994-05-13 | 1995-04-25 | Exxon Production Research Company | Method for cascading sweeps for a seismic vibrator |
| US20060164916A1 (en) * | 2003-08-11 | 2006-07-27 | Krohn Christine E | Method for continuous sweepting and separtion of multiple seismic vibrators |
| CN101680957A (en) * | 2007-02-08 | 2010-03-24 | 科诺科菲利浦公司 | The dynamic source parameter that is used for seismic vibrator data acquisition is selected |
| US20100157733A1 (en) * | 2008-12-23 | 2010-06-24 | Mark Daly | Compensating seismic data for source variations |
| US20120113747A1 (en) * | 2010-11-04 | 2012-05-10 | Ferber Ralf G | Marine Vibroseis Motion Correction |
| CN102478671A (en) * | 2010-11-23 | 2012-05-30 | 中国石油天然气集团公司 | Method for suppressing controllable seismic-source harmonic-wave interference |
| CN106094024A (en) * | 2016-06-21 | 2016-11-09 | 中国石油天然气集团公司 | A kind of controlled source slip scan data acquisition treatment method and device |
| CN109143330A (en) * | 2017-06-27 | 2019-01-04 | 中国石油化工股份有限公司 | A kind of optimization controlled source obtains the method and system of single-shot quality |
| CN108181645A (en) * | 2017-11-24 | 2018-06-19 | 中国石油天然气集团公司 | A kind of controlled source frequency dividing while exciting method, apparatus and system |
Non-Patent Citations (8)
| Title |
|---|
| T.DEAN等: "《伪随机扫描在可控震源探测中的应用》", 世界地震译丛, vol. 47, no. 1, pages 64 - 90 * |
| XIAO-PINGLI ET AL: "《Elimination of harmonic distortion in vibroseis data》", GEOPHYSICS, vol. 60, no. 2, pages 503 - 516 * |
| 周大同等: "《可控震源施工效率估算方法》", 石油地球物理勘探, vol. 43, no. 2, 31 December 2008 (2008-12-31), pages 50 - 54 * |
| 张新生: "《浅谈可控震源在煤田地震勘探中应用的几点认识》", 中国煤田地质, vol. 18, no. 1, 31 December 2006 (2006-12-31), pages 56 - 57 * |
| 曹务祥等: "《利用可控震源的力信号压制谐波干扰》", 石油物探, vol. 50, no. 1, pages 89 - 92 * |
| 柴铭涛等: "《城市活断层探测中的反射地震数据采集和处理技术》", 物探与化探, vol. 31, no. 4, pages 365 - 369 * |
| 蓝益军等: "《滑动扫描谐波的现场压制方法》", 石油地球物理勘探, vol. 48, no. 4, pages 507 - 512 * |
| 郑恭明等: "《基于NiosⅡ的扫描信号发生器IP核设计》", 物探装备, vol. 21, no. 5, pages 281 - 284 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200544A (en) * | 2021-11-12 | 2022-03-18 | 中石化石油工程技术服务有限公司 | Vibroseis scanning efficiency evaluation method and device, electronic equipment and storage medium |
| CN114200544B (en) * | 2021-11-12 | 2024-04-05 | 中石化石油工程技术服务有限公司 | Method and device for evaluating scanning efficiency of controllable seismic source, electronic equipment and storage medium |
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