CN108181646B - A kind of controlled source exciting method, apparatus and system simultaneously - Google Patents
A kind of controlled source exciting method, apparatus and system simultaneously Download PDFInfo
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- CN108181646B CN108181646B CN201711192821.XA CN201711192821A CN108181646B CN 108181646 B CN108181646 B CN 108181646B CN 201711192821 A CN201711192821 A CN 201711192821A CN 108181646 B CN108181646 B CN 108181646B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
Abstract
The embodiment of the present application discloses a kind of controlled source, and exciting method, apparatus and system the method includes dividing targeted scans signal according to preset division number obtain sub- scanning signal simultaneously；Sub- scanning signal is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, the multiple excitation scanning signal is irrelevant in frequency domain；The excitation scanning signal for choosing preset number assigns the different controlled sources of preset number respectively；According to respective excitation scanning signal, simultaneously seismic wave excites the different controlled sources of the preset number.Using each embodiment of the application, the efficiency of earthquake data acquisition can be further increased while guaranteeing the seismic data hi-fi of acquisition.
Description
Technical field
The present invention relates to seismic data acquisition technical fields, particularly, are related to a kind of controlled source exciting method, dress simultaneously
It sets and system.
Background technique
In seismic prospecting, controlled source has been obtained as the main tool for generating seismic signal and is widely applied.
The hi-fi for how improving its production efficiency and data has become a hot topic of research.Traditional focus is scanned, in order to disappear
Influence except harmonic wave interference to seismic data, the time interval of twice sweep have to be larger than equal to sweep time and listen the time.It listens
Time is critically important, it can ensure that the data generated are from harmonic wave interference.But listen time restriction production efficiency.
The Chinese invention patent of application number ZL201310545312.6 discloses a kind of controlled source frequency dividing while the side of excitation
Method, the invention have carried out frequency-division section to scanning signal and have been divided into required subsignal, then by coding, make the letter excited simultaneously
It is number mutually incoherent in frequency domain, to solve the high separation demand to adjacent big gun data.While improving the production efficiency, it protects
The hi-fi of data after separating is demonstrate,proved.But since the signal number that focus electronic-control box itself can accommodate is limited, generally 12
It is a, limit the application of above-mentioned technology.It is external right because being related to if the method for using outside to input next subsignal immediately
The control of focus electronic-control box and the influence of communication line, are not easy to realize and take a long time, influence production efficiency.
Summary of the invention
The embodiment of the present application is designed to provide a kind of controlled source exciting method, apparatus and system simultaneously, Ke Yi
While guaranteeing the seismic data hi-fi of acquisition, the efficiency of earthquake data acquisition is further increased.
Exciting method, apparatus and system are by including that following manner is realized to a kind of controlled source provided by the present application simultaneously
:
A kind of controlled source exciting method simultaneously, comprising:
Targeted scans signal is divided according to preset division number, obtains sub- scanning signal；
Sub- scanning signal is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, it is described more
A excitation scanning signal is irrelevant in frequency domain；
The excitation scanning signal for choosing preset number assigns the different controlled sources of preset number respectively；
According to respective excitation scanning signal, simultaneously seismic wave excites the different controlled sources of the preset number.
The controlled source of the embodiment of the present application exciting method simultaneously, it is described according to preset division number by targeted scans signal into
Row frequency dividing, obtains sub- scanning signal, comprising:
According to walking the time for noiseless length, simultaneously explosive source number and focus, preset division number is determined；
Targeted scans signal is subjected to frequency dividing according to the preset division number and obtains sub- scanning signal.
The controlled source while exciting method of the embodiment of the present application, it is described according to noiseless length, the spatial distribution of focus
And the time on foot of focus, determine preset division number, comprising:
The minimum divider ratio N that N platform focus excites simultaneously is determined according to the following formulaf, the preset division number is more than or equal to
The minimum divider ratio:
Wherein, TrIndicate record length, TlIndicate that focus is walked the time, TsIndicate subsignal sweep length, D indicates focus
Spatial distribution distance, V indicate that the wave that excitation is formed propagates maximum speed.
The controlled source while exciting method of the embodiment of the present application, it is described that sub- scanning signal is subjected to weight according to preset rules
New sort and concatenate form multiple excitation scanning signals, the multiple excitation scanning signal is irrelevant in frequency domain, comprising:
Sub- scanning signal is encoded according to sequence from low to high, and constructs son scanning letter according to preset rules
Number encoder matrix, the preset rules include: in the every row of the encoder matrix each sub- sweep encoding it is different, the volume
Code matrix column data include all sub- sweep encodings after rearrangement；
The sub- sweep encoding matrix column data are carried out concatenation to carry out forming excitation scanning signal.
The controlled source of the embodiment of the present application exciting method simultaneously, it is described according to sequence from low to high by sub- scanning
Signal is encoded, and constructs sub- sweep encoding matrix according to preset rules, comprising:
The sub- scanning signal is divided into no intersection frequency range collection, determines that the sub- scanning is believed according to the no intersection frequency range collection
The row data of number encoder matrix.
The controlled source while exciting method of the embodiment of the present application, further includes:
The timeliness that N platform focus excites simultaneously is calculated according to the following formula:
Wherein, E indicates timeliness, and L indicates excitation scanning signal length, TlIndicate that focus is walked the time.
The controlled source while exciting method of the embodiment of the present application, the different controlled sources of the preset number are according to respectively
Excitation scanning signal simultaneously seismic wave excitation after, further includes:
The corresponding earthquake mother of controlled source simultaneously seismic wave excitation for acquiring the preset number records data, to institute
It states earthquake mother and records data progress data separating processing, obtain the earthquake record that each focus corresponds to shot point.
The controlled source while exciting method of the embodiment of the present application, it is described that data progress data point are recorded to the earthquake mother
From processing, the earthquake record that each focus corresponds to shot point is obtained, comprising:
Data are recorded to the earthquake mother according to sub- scanning signal length and carry out cutting, obtain earthquake cutting data, it is described
Earthquake cutting data length is equal to sub- scanning signal length and adds record length；
By in single epicenter excitation scanning signal each sub- scanning signal or force signal respectively with corresponding earthquake cutting
Data carry out related, obtain the corresponding earthquake subrecord of corresponding focus；
The corresponding earthquake subrecord of single focus is overlapped to the earthquake record for obtaining corresponding focus and corresponding to shot point.
On the other hand, the embodiment of the present application also provides a kind of controlled source excitation apparatus simultaneously, comprising:
Frequency division module obtains sub- scanning signal for dividing targeted scans signal according to preset division number；
Concatenation module, for sub- scanning signal is resequenced according to preset rules and is concatenated to be formed it is multiple excitation sweep
Signal is retouched, the multiple excitation scanning signal is irrelevant in frequency domain；
Signal distribution module, the difference that the excitation scanning signal for choosing preset number assigns preset number respectively are controllable
Focus；
Excitation module, the different controlled sources for the preset number carry out simultaneously according to respective excitation scanning signal
Seismic wave excitation.
The controlled source of the embodiment of the present application excitation apparatus simultaneously, including processor and refer to for storage processor to be executable
The memory of order, when described instruction is executed by the processor realize the following steps are included:
Targeted scans signal is divided according to preset division number, obtains sub- scanning signal；
Sub- scanning signal is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, it is described more
A excitation scanning signal is irrelevant in frequency domain；
The excitation scanning signal for choosing preset number assigns the different controlled sources of preset number respectively；
According to respective excitation scanning signal, simultaneously seismic wave excites the different controlled sources of the preset number.
On the other hand, the embodiment of the present application also provides a kind of controlled source activating system simultaneously, including more excite simultaneously
Controlled source, wave detector and data processing module, wherein the controlled source include frequency division module, concatenation module and
Signal distribution module.
A kind of controlled source while exciting method, apparatus and system that this specification one or more embodiment provides, can
Multiple excitation scanning letters are formed to be resequenced and be concatenated according to preset rules by the sub- scanning signal for obtaining frequency dividing
Number, the multiple excitation scanning signal is irrelevant in frequency domain.Then, it is chosen from the multiple excitation scanning signal default
The excitation scanning signal of number, and by the excitation scanning signal of preset number assign preset number different controlled sources.It is described
According to respective excitation scanning signal, simultaneously seismic wave excites the different controlled sources of preset number.To realize simultaneously
Difference of the corresponding scanning signal of each focus of excitation in frequency solves while guaranteeing that adjacent big gun data can efficiently separate
Electric cabinet is inconvenient to the limitation of number of signals and communication bring, improves production efficiency.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.In the accompanying drawings:
Fig. 1 is the flow diagram of a kind of controlled source that this specification provides while exciting method embodiment；
The excitation scanning signal schematic diagram of focus number V1 in one embodiment that Fig. 2 provides for this specification；
8 frequency dividing excitation scanning signal schematic diagrames in another embodiment that Fig. 3 provides for this specification；
Earthquake mother records data cutting schematic diagram in another embodiment that Fig. 4 provides for this specification；
Conventional sweep signal schematic representation in another embodiment that Fig. 5 provides for this specification；
Earthquake record schematic diagram in another embodiment that Fig. 6 provides for this specification at same shot point；
Fig. 7 is the modular structure schematic diagram of a kind of controlled source that this specification provides while excitation apparatus embodiment.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in this specification, below in conjunction with this explanation
Attached drawing in book one or more embodiment carries out the technical solution in this specification one or more embodiment clear, complete
Site preparation description, it is clear that described embodiment is only specification a part of the embodiment, instead of all the embodiments.Based on saying
Bright book one or more embodiment, it is obtained by those of ordinary skill in the art without making creative efforts all
The range of this specification example scheme protection all should belong in other embodiments.
The conventional use of controlled source may include following steps: first be placed in one or more controlled source
On one shot point.Then start to drive controlled source with a scanning signal, focus starts to vibrate, and time of vibration is general
It is 10 to 16 seconds, scanning signal is usually the signal that one frequency changes over time.Then, wave detector is by the sound of a period of time
It answers data receiver and records, this period listens the time plus one equal to sweep time；This period should include seismic wave from production
Raw, main purpose layer is reflected into the received minimum required time.Finally, by carrying out cross-correlation to record data and reference scan
Obtain earthquake record.Certainly it repeats the above steps and will be remembered on same shot point several times sometimes for increase signal strength
Record, and be added together and to form final earthquake record.Focus can be carried out the vibration of next shot point after the completion.But routine can
It is lower to control epicenter excitation method efficiency, is improved efficiency if excited simultaneously using multiple focus, while there is adjacent big gun again and interfering shadow
It rings, the data SNR of acquisition is lower.
The Chinese invention patent of application number ZL201310545312.6 discloses a kind of controlled source frequency dividing while the side of excitation
Method, the invention have carried out frequency-division section to scanning signal and have been divided into required subsignal, then by coding, make the letter excited simultaneously
It is number mutually incoherent in frequency domain, the high separation demand of adjacent big gun data is subtracted while improving the production efficiency to solve
The investment of few equipment, improves the hi-fi of data after separation.But the signal number that can be accommodated due to focus electronic-control box itself
It is limited, generally 12, the application of above-mentioned technology is limited in this way.If outside is used to input next subsignal immediately
Method is not easy to realize, and take a long time, shadow because being related to outside to the control of focus electronic-control box and the influence of communication line
Ring production efficiency.
It, can will be according to son in view of the above-mentioned problems, this specification embodiment provides a kind of controlled source exciting method simultaneously
Scanning signal carries out rearrangement concatenation by preset rules and forms multiple excitation scanning signals, and the multiple excitation scanning signal
It is irrelevant in frequency domain.The excitation scanning signal that preset number is chosen from multiple excitation scanning signals, then assigns default
The controlled source of number, according to respective excitation scanning signal, simultaneously seismic wave swashs the controlled source of the preset number
Hair.The corresponding excitation scanning signal of different focus of excitation is irrelevant in frequency domain simultaneously, to realize having for adjacent big gun data
Effect separation.And at the same time reducing the demand to equipment, production efficiency is improved.
Fig. 1 is the embodiment of the method flow diagram that a kind of controlled source that this specification provides excites simultaneously.Though
So present description provides as the following examples or method operating procedure shown in the drawings or apparatus structure, but based on conventional or
May include more in the method or device without creative labor or part merge after less operating procedure or
Modular unit.In the step of there is no necessary causalities in logicality or structure, the execution sequence or device of these steps
Modular structure be not limited to this specification embodiment or execution shown in the drawings sequence or modular structure.The method or module
Device in practice, server or the end product of structure are in application, can be according to embodiment or method shown in the drawings
Or modular structure carry out sequence execution or it is parallel execute (such as parallel processor or multiple threads environment, even wrap
Include the implementation environment of distributed treatment, server cluster).
Specific one embodiment is as shown in Figure 1, method that a kind of controlled source that this specification provides excites simultaneously
In one embodiment, the method may include:
S2, targeted scans signal is divided according to preset division number, obtains sub- scanning signal；
In the present embodiment, depth of stratum, harmonic wave interference etc. can be reflected by comprehensive analysis because usually determining targeted scans
Signal；Then targeted scans signal can be divided by several frequency bands in frequency domain according to preset division number, obtains son scanning
Signal；Frequency dividing can be the frequency range even single-frequency of equal part or random cutting.
In this specification one embodiment, sub- scanning signal can be divided into has intersection frequency range collection and without intersection frequency range collection,
It is described to there is intersection frequency range to refer to that, there are frequency overlapping between sub- scanning signal, the no intersection frequency range refers between sub- scanning signal
There is no frequency overlappings.Assuming that the sub- scanning signal after frequency dividing is respectively s1,s2,...,sn, frequency band is respectively f1-f1+Δf1,
f2-f2+Δf2,f3-f3+Δf3,...,fn-fn+Δfn, then successive bands f can be set1-f1+Δf1With f2-f2+Δf2To there is friendship
Collect frequency range, is separated by frequency range f1-f1+Δf1With f3-f3+Δf3For no intersection frequency range.
In one embodiment of this specification, can according to record need noiseless length, sub- scanning signal length with
And the focus number excited simultaneously, determine preset division number.
When the noiseless length that record needs is n seconds, the no sub- scanning signal matrix G of intersection frequency range can be indicated are as follows: G=
(Sij)2N×2M, wherein SijThe sub- scanning signal of the i-th row of matrix, jth column, N be realize n second without required for relevant record length
Scanning subsignal line number, M be simultaneously explosive source quantity.The minimum divider ratio that the controlled source excites simultaneously can be 2
N*M again, the preset division number are more than or equal to minimum divider ratio.
In one or more embodiment of this specification, it is further contemplated that focus is walked, the time calculates preset division
Number, thus divider ratio required when being further reduced the focus of same number of units while exciting, i.e., if preset division number is certain,
More focus may be implemented while exciting, to improve working efficiency.
In one embodiment of this specification, it is assumed that while explosive source number of units is N, record length Tr, focus walks
Time is Tl, the focus spatial distribution distance that can permit is D, subsignal sweep length Ts, the wave of formation is excited to propagate most high speed
Spend V.When it is implemented, the noiseless length for assuming that the record needs is equal to record length.
Then by focus walk the time generation the focus number of units N that can be excited simultaneouslylIt can indicate are as follows:
The time difference T of adjacent shot point is excited while generation by the spatial distribution of explosive source simultaneouslyp:
Then in record length TrAdd subsignal sweep length TsTime in without minimum point of the excitation of same frequency subsignal
Frequency NfIt can indicate are as follows:
In one embodiment of this specification, the preset division number is more than or equal to the minimum divider ratio.
Assuming that the focus spatial distribution distance that can permit is D very little, then TpItem can be ignored, to excite simultaneously
Focus number N required for minimum divider ratio NfCan only consider focus walk time and sub- scanning signal length ratio,
And the ratio of record length and sub- scanning signal length.Minimum divider ratio N required for the focus number N then excited simultaneouslyfWith
Sub- scanning signal length TsIt is inversely proportional.
If subsignal sweep length is certain, and divider ratio is enough, by formula (3) it is found that admissible excite simultaneously
Focus spatial distribution distance D can accomplish very little, i.e., the influence that the focus spatial distribution of excitation interferes adjacent big gun simultaneously is smaller.
And it walks the time because considering focus, excitation while more platform focus may be implemented, to further improve work effect
Rate.
S4, sub- scanning signal is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, institute
It is irrelevant in frequency domain to state multiple excitation scanning signals；
In one embodiment of this specification, the sub- scanning signal that frequency dividing can be obtained carries out again according to preset rules
Sequence, and concatenate and form multiple excitation scanning signals.It can be scanned and be believed by the modes antithetical phrase such as mathematical analysis or tabular analysis
It number resequences, and sub- scanning signal is subjected to concatenation in sequence and forms excitation scanning signal, and meets rearrangement
It is irrelevant in frequency domain to concatenate the excitation scanning signal formed.
In one or more embodiment of this specification, can according to sequence from low to high by sub- scanning signal into
Row coding, and sub- sweep encoding matrix is constructed, the column data of encoder matrix is subjected to concatenation and forms excitation scanning signal.Institute
The row for stating encoder matrix includes the sub- sweep encoding at same moment in each excitation scanning signal, and each sub- scanning letter in every row
Number coding is different；The column data of the encoder matrix includes all sub- sweep encodings after rearrangement.Because of coding
Each sub- sweep encoding is different in the every row of matrix, so each excitation scanning signal that scheme provided in this embodiment obtains
It is irrelevant in frequency domain.
In one embodiment of this specification, the sub- sweep encoding data in the encoder matrix with a line be can be
Separation coding in no intersection frequency range, is also possible to the continuous programming code for having in intersection frequency range.This specification one or more
In embodiment, it is preferred that the separation that the sub- sweep encoding data in encoder matrix with a line are concentrated using no intersection frequency range
Coding, to improve while excite the signal-to-noise ratio for obtaining data.
S6, the excitation scanning signal for choosing preset number assign the different controlled sources of preset number respectively.
In the present embodiment, the excitation scanning signal of preset number, institute can be chosen from the multiple excitation scanning signal
The focus number excited while preset number is equal to default is stated, then assigns the excitation scanning signal of preset number simultaneously respectively
The different focus of excitation.
S8, the preset number different controlled sources according to respective excitation scanning signal simultaneously seismic wave swash
Hair.
In the present embodiment, according to respective scanning signal, simultaneously seismic wave excites the different focus of preset number, shake
The scanning signal length of source excitation is identical as conventional sweep signal, but the excitation scanning signal of the more controlled sources excited simultaneously
It is irrelevant in frequency domain, so as to realize efficiently separating to the seismic data of acquisition.And without in focus electronic-control box
A large amount of fractional frequency signal is accommodated, to improve production efficiency while guaranteeing the hi-fi of later period seismic data.
The targeted scans signal of 1 3Hz-87Hz of table carries out 20 tables of data for dividing and encoding
| Encode serial number | Initial frequency | Terminate frequency | Encode serial number | Initial frequency | Terminate frequency |
| 1 | 3 | 9 | 11 | 43 | 49 |
| 2 | 7 | 13 | 12 | 47 | 53 |
| 3 | 11 | 17 | 13 | 51 | 57 |
| 4 | 15 | 21 | 14 | 55 | 61 |
| 5 | 19 | 25 | 15 | 59 | 65 |
| 6 | 23 | 29 | 16 | 63 | 69 |
| 7 | 27 | 33 | 17 | 67 | 73 |
| 8 | 31 | 37 | 18 | 71 | 77 |
| 9 | 35 | 41 | 19 | 75 | 81 |
| 10 | 39 | 45 | 20 | 79 | 85 |
In order to enable the scheme in the embodiment that this specification provides is clearer, this specification is additionally provided using above-mentioned
The specific example in the reality of scheme region to be measured.As shown in table 1, table 2 and Fig. 2.
Wherein, table 1 indicates to carry out 20 data for dividing and encoding to the targeted scans signal that frequency range is 3Hz-87Hz.
Table 2 indicates the corresponding excitation sweep encoding sequence of focus (V1, V2 ..., V8) of 8 excitations simultaneously, and each column coding is pressed
Sequence is concatenated the excitation scanning signal for forming corresponding focus.The excitation scanning signal of Fig. 2 expression focus number V1.Analysis
It is found that the sub- sweep encoding in each row is different, i.e. 8 controlled sources of number V1, V2 ..., V8 carry out simultaneously table 2
Respective scanning signal is irrelevant in frequency domain when excitation.8 controlled sources of excitation can be according to respective excitation simultaneously
Scanning signal implements seismic wave excitation simultaneously.
28 focus of table excite the encoder matrix tables of data of 20 frequency dividing subsignals simultaneously
| V1 | V2 | V3 | V4 | V5 | V6 | V7 | V8 |
| 1 | 3 | 5 | 7 | 9 | 11 | 13 | 15 |
| 17 | 19 | 2 | 4 | 6 | 8 | 10 | 12 |
| 14 | 16 | 18 | 20 | 1 | 3 | 5 | 7 |
| 9 | 11 | 13 | 15 | 17 | 19 | 2 | 4 |
| 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 |
| 3 | 5 | 7 | 1 | 11 | 10 | 15 | 17 |
| 19 | 2 | 4 | 6 | 8 | 13 | 12 | 14 |
| 16 | 18 | 20 | 3 | 5 | 7 | 9 | 11 |
| 13 | 15 | 17 | 19 | 2 | 4 | 6 | 8 |
| 10 | 12 | 14 | 16 | 18 | 20 | 1 | 3 |
| 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19 |
| 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
| 18 | 20 | 11 | 13 | 15 | 17 | 4 | 1 |
| 7 | 9 | 3 | 5 | 7 | 9 | 11 | 13 |
| 15 | 17 | 19 | 14 | 16 | 1 | 8 | 2 |
| 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 |
| 20 | 1 | 12 | 17 | 3 | 5 | 7 | 9 |
| 11 | 13 | 15 | 18 | 20 | 2 | 19 | 6 |
| 8 | 10 | 1 | 9 | 4 | 18 | 3 | 5 |
| 12 | 14 | 16 | 2 | 19 | 6 | 20 | 10 |
In one embodiment of this specification, carries out while exciting using this specification scheme provided by the above embodiment,
Each focus is not interfere with each other, then the timeliness that N platform focus excites simultaneously can indicate are as follows:
Wherein, E indicates timeliness, and L indicates concatenation scanning signal length, TlIndicate that focus is walked the time.
In another embodiment of this specification, while the focus excited carries out earthquake according to respective excitation scanning signal
Wave excitation obtains earthquake mother and records data.When it is implemented, can acquire earthquake mother by wave detector records data.In general, can
The collected seismic data of wave detector is consecutive shock data when control focus excites simultaneously, then can be according to the GPS of epicenter excitation
Time is syncopated as earthquake mother from consecutive shock data and records data, and the cutting duration can be excitation scanning signal length
Add record length.Then, data are recorded to the earthquake mother and carries out data separating processing, obtain the earthquake that each focus corresponds to shot point
Record.Assuming that the focus excited simultaneously is N platform, then its corresponding earthquake mother records the mixing seismic data that data are N platform focus,
Therefore, data need to be recorded to earthquake mother and carries out data separating processing, to obtain the earthquake record of each focus.Certainly, if examined
Consider the response of Seismic Source System, the sub- scanning signal in operation can be replaced with the corresponding force signal of sub- scanning signal.
In one embodiment of this specification, data can be recorded to the earthquake mother according to sub- scanning signal length and carried out
Cutting, the earthquake cutting data length are equal to sub- scanning signal length and add record length, and the earthquake for obtaining preset division number is cut
Divided data.It is then possible to which each sub- scanning signal in single epicenter excitation scanning signal is cut with the earthquake at corresponding moment respectively
Divided data carries out related, obtains the corresponding earthquake subrecord of corresponding focus；The earthquake subrecord of single focus is overlapped and is obtained
It obtains the focus and corresponds to the earthquake record at shot point.
Fig. 3 show the excitation scanning signal that preset division number is 8.Corresponding record is added to grow according to sub- scanning signal length
It spends and data progress cutting is recorded to the earthquake mother of acquisition, as shown in figure 4, successively obtaining 8 earthquake cutting data.Wherein, sub- letter
Number sweep length is 2s, and corresponding record length is 6s.Then, by the earthquake cutting number at each sub- scanning signal corresponding moment
According to carrying out related separating treatment, to isolate the corresponding earthquake subrecord of each sub- scanning signal of the focus.The focus is corresponding
Each earthquake subrecord be sequentially overlapped according to the sequence of sub- sweep encoding from big to small, obtain the focus and correspond to shot point
The earthquake record at place.According to the above method, obtains while other focus of excitation correspond to the earthquake record at shot point.
In another specific example of this specification, Fig. 5 indicates to believe with the consistent conventional sweep of excitation scanning signal frequency band
Number, the earthquake record that Fig. 6 left representation conventional sweep signal obtains, Fig. 6 is right to indicate provided by the above embodiment using this specification
The earthquake record that scheme obtains.It is almost the same that two earthquake record data in comparison diagram 6 can be seen that earthquake record result.
It is possible thereby to illustrate, this specification scheme provided by the above embodiment ensure that the height of seismic data while improving efficiency
Fidelity.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Specifically it is referred to
The description of aforementioned relevant treatment related embodiment, does not do repeat one by one herein.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims
It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment
It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable
Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can
With or may be advantageous.
A kind of controlled source while exciting method that this specification one or more embodiment provides, can be by that will divide
The sub- scanning signal obtained is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, the multiple to swash
It is irrelevant in frequency domain to send out scanning signal.Then, the excitation for preset number being chosen from the multiple excitation scanning signal is swept
Signal is retouched, and the excitation scanning signal of preset number is assigned to the controlled source of preset number.The controllable shake of the preset number
According to respective excitation scanning signal, simultaneously seismic wave is excited in source.It is swept to which each focus for realizing while exciting is corresponding
Difference of the signal in frequency is retouched, while guaranteeing that adjacent big gun data can efficiently separate, solves electric cabinet to number of signals
Limitation and communication bring are inconvenient, improve production efficiency.
Based on controlled source described above, exciting method, this specification one or more embodiment also provide one kind simultaneously
Controlled source while excitation apparatus.The device may include the system for having used this specification embodiment the method, soft
Part (application), module, component, server etc. simultaneously combine the necessary device for implementing hardware.Based on same innovation thinking, this explanation
The device in one or more embodiments that book embodiment provides is as described in the following examples.The reality solved the problems, such as due to device
Existing scheme is similar to method, therefore the implementation of the specific device of this specification embodiment may refer to the implementation of preceding method, weight
Multiple place repeats no more.Used below, the software of predetermined function and/or hard may be implemented in term " unit " or " module "
The combination of part.Although device described in following embodiment is preferably realized with software, hardware or software and hardware
The realization of combination be also that may and be contemplated.Specifically, Fig. 7 is a kind of controlled source that this specification provides while exciting
The modular structure schematic diagram of Installation practice, as shown in fig. 7, the apparatus may include:
Frequency division module 102 can be used for being divided targeted scans signal according to preset division number, obtain son scanning letter
Number；
Concatenation module 104, sub- scanning signal can be resequenced according to preset rules and concatenate to be formed it is multiple swash
Scanning signal is sent out, the multiple excitation scanning signal is irrelevant in frequency domain；
Signal distribution module 106, the excitation scanning signal that can be used for choosing preset number assign preset number respectively
Different controlled sources；
Excitation module 108 can be used for the different controlled sources of the preset number according to respective excitation scanning signal
Simultaneously seismic wave excites.
It should be noted that device described above can also include other embodiment party according to the description of embodiment of the method
Formula.Concrete implementation mode is referred to the description of related method embodiment, does not repeat one by one herein.
A kind of controlled source while excitation apparatus that this specification one or more embodiment provides, can be by that will divide
The sub- scanning signal obtained is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, the multiple to swash
It is irrelevant in frequency domain to send out scanning signal.Then, the excitation for preset number being chosen from the multiple excitation scanning signal is swept
Signal is retouched, and the excitation scanning signal of preset number is assigned to the different controlled sources of preset number.The preset number is not
With controlled source, according to respective excitation scanning signal, simultaneously seismic wave is excited.Each focus to realize while excite
Difference of the corresponding scanning signal in frequency solves electric cabinet to letter while guaranteeing that adjacent big gun data can efficiently separate
The limitation of number amount and communication bring are inconvenient, improve production efficiency.
Method or apparatus described in above-described embodiment that this specification provides can realize that business is patrolled by computer program
It collects and records on a storage medium, the storage medium can be read and be executed with computer, realize this specification embodiment institute
The effect of description scheme.Therefore, this specification also provides a kind of controlled source simultaneously at excitation apparatus, including processor and storage
Manage device executable instruction memory, when described instruction is executed by the processor realization the following steps are included:
Targeted scans signal is divided according to preset division number, obtains sub- scanning signal；
Sub- scanning signal is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, it is described more
A excitation scanning signal is irrelevant in frequency domain；
The excitation scanning signal for choosing preset number assigns the different controlled sources of preset number respectively；
According to respective excitation scanning signal, simultaneously seismic wave excites the different controlled sources of the preset number.
The storage medium may include the physical unit for storing information, usually by after information digitalization again with benefit
The media of the modes such as electricity consumption, magnetic or optics are stored.It may include: that letter is stored in the way of electric energy that the storage medium, which has,
The device of breath such as, various memory, such as RAM, ROM；The device of information is stored in the way of magnetic energy such as, hard disk, floppy disk, magnetic
Band, core memory, magnetic bubble memory, USB flash disk；Using optical mode storage information device such as, CD or DVD.Certainly, there are also it
Readable storage medium storing program for executing of his mode, such as quantum memory, graphene memory etc..
It should be noted that device described above can also include other embodiment party according to the description of embodiment of the method
Formula.Concrete implementation mode is referred to the description of related method embodiment, does not repeat one by one herein.
A kind of excitation apparatus simultaneously of controlled source described in above-described embodiment, can be believed by that will divide the son scanning obtained
It number is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, the multiple excitation scanning signal is in frequency
Rate domain is irrelevant.Then, the excitation scanning signal of preset number is chosen from the multiple excitation scanning signal, and will preset
The excitation scanning signal of number assigns the different controlled sources of preset number.The different controlled sources of the preset number are according to each
From excitation scanning signal simultaneously seismic wave excite.To realize while the corresponding scanning signal of each focus excited exists
Difference in frequency, while guaranteeing that adjacent big gun data can efficiently separate, solve electric cabinet to the limitation of number of signals and
It is inconvenient to communicate bring, improves production efficiency.
This specification also provides a kind of controlled source activating system simultaneously, and the system can be same for individual controlled source
When activating system, can also apply in a plurality of types of system for acquiring seismic data.The system can be individually clothes
Business device also may include the service for having used one or more the methods or one or more embodiment devices of this specification
Device cluster, system (including distributed system), software (application), practical operation device, logic gates device, quantum computer
Deng and combine it is necessary implement hardware terminal installation.The controlled source while activating system may include more while swashing
Controlled source, wave detector and the data processing module of hair, wherein the controlled source include frequency division module, concatenation module with
And signal distribution module.
It should be noted that system described above can also include other embodiment party according to the description of embodiment of the method
Formula.Concrete implementation mode is referred to the description of related method embodiment, does not repeat one by one herein.
A kind of activating system simultaneously of controlled source described in above-described embodiment, can be believed by that will divide the son scanning obtained
It number is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, the multiple excitation scanning signal is in frequency
Rate domain is irrelevant.Then, the excitation scanning signal of preset number is chosen from the multiple excitation scanning signal, and will preset
The excitation scanning signal of number assigns the different controlled sources of preset number.The different controlled sources of the preset number are according to each
From excitation scanning signal simultaneously seismic wave excite.To realize while the corresponding scanning signal of each focus excited exists
Difference in frequency, while guaranteeing that adjacent big gun data can efficiently separate, solve electric cabinet to the limitation of number of signals and
It is inconvenient to communicate bring, improves production efficiency.
It should be noted that this specification device or system described above according to the description of related method embodiment also
It may include other embodiments, concrete implementation mode is referred to the description of embodiment of the method, does not go to live in the household of one's in-laws on getting married one by one herein
It states.All the embodiments in this specification are described in a progressive manner, and same and similar part is mutual between each embodiment
Mutually referring to each embodiment focuses on the differences from other embodiments.Especially for hardware+program
For class, storage medium+program embodiment, since it is substantially similar to the method embodiment, so be described relatively simple, it is related
Place illustrates referring to the part of embodiment of the method.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims
It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment
It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable
Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can
With or may be advantageous.
System, device, module or the unit that above-described embodiment illustrates can specifically realize by computer chip or entity,
Or it is realized by the product with certain function.It is a kind of typically to realize that equipment is computer.Specifically, computer for example may be used
Think personal computer, laptop computer, vehicle-mounted human-computer interaction device, cellular phone, camera phone, smart phone, individual
Digital assistants, media player, navigation equipment, electronic mail equipment, game console, tablet computer, wearable device or
The combination of any equipment in these equipment of person.
For convenience of description, it is divided into various modules when description apparatus above with function to describe respectively.Certainly, implementing this
The function of each module can be realized in the same or multiple software and or hardware when specification one or more, it can also be with
The module for realizing same function is realized by the combination of multiple submodule or subelement etc..Installation practice described above is only
It is only illustrative, for example, in addition the division of the unit, only a kind of logical function partition can have in actual implementation
Division mode, such as multiple units or components can be combined or can be integrated into another system or some features can be with
Ignore, or does not execute.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be logical
Some interfaces are crossed, the indirect coupling or communication connection of device or unit can be electrical property, mechanical or other forms.
It is also known in the art that other than realizing controller in a manner of pure computer readable program code, it is complete
Entirely can by by method and step carry out programming in logic come so that controller with logic gate, switch, specific integrated circuit, programmable
Logic controller realizes identical function with the form for being embedded in microcontroller etc..Therefore this controller is considered one kind
Hardware component, and the structure that the device for realizing various functions that its inside includes can also be considered as in hardware component.Or
Person even, can will be considered as realizing the device of various functions either the software module of implementation method can be hardware again
Structure in component.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method or equipment of element.
It will be understood by those skilled in the art that this specification one or more embodiment can provide as method, system or calculating
Machine program product.Therefore, this specification one or more embodiment can be used complete hardware embodiment, complete software embodiment or
The form of embodiment combining software and hardware aspects.Moreover, this specification one or more embodiment can be used at one or
It is multiple wherein include computer usable program code computer-usable storage medium (including but not limited to magnetic disk storage,
CD-ROM, optical memory etc.) on the form of computer program product implemented.
This specification one or more embodiment can computer executable instructions it is general on
It hereinafter describes, such as program module.Generally, program module includes executing particular task or realization particular abstract data type
Routine, programs, objects, component, data structure etc..This this specification one can also be practiced in a distributed computing environment
Or multiple embodiments, in these distributed computing environments, by being held by the connected remote processing devices of communication network
Row task.In a distributed computing environment, program module can be located at the local and remote computer including storage equipment
In storage medium.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ",
The description of " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, structure, material
Or feature is contained at least one embodiment or example of this specification.In the present specification, to the signal of above-mentioned term
Property statement must not necessarily be directed to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other,
Those skilled in the art can be by different embodiments or examples described in this specification and different embodiments or examples
Feature is combined.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (8)
1. a kind of controlled source while exciting method characterized by comprising
Targeted scans signal is divided according to preset division number, obtains sub- scanning signal；
Sub- scanning signal is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, it is the multiple to swash
It is irrelevant that hair scanning signal is maintained at frequency domain when being excited simultaneously by more controlled sources；
The excitation scanning signal for choosing preset number assigns the different controlled sources of preset number respectively；
According to respective excitation scanning signal, simultaneously seismic wave excites the different controlled sources of the preset number；
Wherein, the preset division number is determined using following manner:
The minimum divider ratio N that N platform focus excites simultaneously is determined according to the following formulaf, the preset division number be more than or equal to it is described most
Small divider ratio:
Wherein, TrIndicate record length, TlIndicate that focus is walked the time, NlIndicate that focus time of walking excites while generate
Focus number of units, TsIndicate subsignal sweep length, D indicates focus spatial distribution distance, TpIndicate the space point of explosive source simultaneously
Cloth excites the time difference of adjacent shot point while generation, V indicates that the wave that excitation is formed propagates maximum speed.
2. controlled source according to claim 1 simultaneously exciting method, which is characterized in that it is described by sub- scanning signal according to
Preset rules are resequenced and concatenate to form multiple excitation scanning signals, comprising:
Sub- scanning signal is encoded according to sequence from low to high, and constructs sub- scanning signal according to preset rules and compiles
Code matrix, the preset rules include: in the sub- every row of sweep encoding matrix each sub- sweep encoding it is different,
The sub- sweep encoding matrix column data include all sub- sweep encodings after rearrangement；
The sub- sweep encoding matrix column data are subjected to concatenation and form excitation scanning signal.
3. controlled source according to claim 2 while exciting method, which is characterized in that described according to from low to high
Sequence sub- scanning signal is encoded, and construct sub- sweep encoding matrix according to preset rules, comprising:
The sub- scanning signal is divided into no intersection frequency range collection, determines that the sub- scanning signal is compiled according to the no intersection frequency range collection
The row data of code matrix.
4. controlled source according to claim 1 while exciting method, which is characterized in that further include:
The timeliness that N platform focus excites simultaneously is calculated according to the following formula:
Wherein, E indicates timeliness, and L indicates excitation scanning signal length, TlIndicate that focus is walked the time.
5. controlled source according to claim 1 while exciting method, which is characterized in that the difference of the preset number can
After focus is controlled according to the simultaneously seismic wave excitation of respective excitation scanning signal, further includes:
The corresponding earthquake mother record data of the different controlled sources simultaneously seismic wave excitation of the preset number are acquired, it is right
The earthquake mother records data and carries out data separating processing, obtains the earthquake record that each focus corresponds to shot point.
6. controlled source according to claim 5 while exciting method, which is characterized in that described to be recorded to the earthquake mother
Data carry out data separating processing, obtain the earthquake record that each focus corresponds to shot point, comprising:
Data are recorded to the earthquake mother according to sub- scanning signal length and carry out cutting, obtain earthquake cutting data, the earthquake
Cutting data length is equal to sub- scanning signal length and adds record length；
By in single epicenter excitation scanning signal each sub- scanning signal or force signal respectively with corresponding earthquake cutting data
It carries out related, obtains the corresponding earthquake subrecord of corresponding focus；
The corresponding earthquake subrecord of single focus is overlapped to the earthquake record for obtaining corresponding focus and corresponding to shot point.
7. a kind of controlled source while excitation apparatus characterized by comprising
Frequency division module obtains sub- scanning signal for dividing targeted scans signal according to preset division number；
Concatenation module to form multiple excitation scanning letters for sub- scanning signal to be resequenced according to preset rules and is concatenated
Number, it is irrelevant that the multiple excitation scanning signal is maintained at frequency domain when being excited simultaneously by more controlled sources；
Signal distribution module, the excitation scanning signal for choosing preset number assign the controllable shake of difference of preset number respectively
Source；
Excitation module, for make the different controlled sources of the preset number according to respective excitation scanning signal simultaneously
Seismic wave excitation；
Wherein, the preset division number is determined using following manner:
The minimum divider ratio N that N platform focus excites simultaneously is determined according to the following formulaf, the preset division number be more than or equal to it is described most
Small divider ratio:
Wherein, TrIndicate record length, TlIndicate that focus is walked the time, NlIndicate that focus time of walking excites while generate
Focus number of units, TsIndicate subsignal sweep length, D indicates focus spatial distribution distance, TpIndicate the space point of explosive source simultaneously
Cloth excites the time difference of adjacent shot point while generation, V indicates that the wave that excitation is formed propagates maximum speed.
8. a kind of controlled source while excitation apparatus, which is characterized in that including processor and for the executable finger of storage processor
The memory of order, when the executable instruction is executed by the processor realize the following steps are included:
Targeted scans signal is divided according to preset division number, obtains sub- scanning signal；
Sub- scanning signal is resequenced according to preset rules and concatenates to form multiple excitation scanning signals, it is the multiple to swash
It is irrelevant that hair scanning signal is maintained at frequency domain when being excited simultaneously by more controlled sources；
The excitation scanning signal for choosing preset number assigns the different controlled sources of preset number respectively；
According to respective excitation scanning signal, simultaneously seismic wave excites the different controlled sources of the preset number；
Wherein, the preset division number is determined using following manner:
The minimum divider ratio N that N platform focus excites simultaneously is determined according to the following formulaf, the preset division number be more than or equal to it is described most
Small divider ratio:
Wherein, TrIndicate record length, TlIndicate that focus is walked the time, NlIndicate that focus time of walking excites while generate
Focus number of units, TsIndicate subsignal sweep length, D indicates focus spatial distribution distance, TpIndicate the space point of explosive source simultaneously
Cloth excites the time difference of adjacent shot point while generation, V indicates that the wave that excitation is formed propagates maximum speed.
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| CN112764102A (en) * | 2019-11-06 | 2021-05-07 | 中国石油天然气集团有限公司 | Seismic data acquisition method and device |
| CN112859150B (en) * | 2019-11-28 | 2023-06-30 | 中国石油天然气集团有限公司 | Method and device for generating controllable focus scanning signal |
| CN112379408A (en) * | 2020-11-02 | 2021-02-19 | 中国石油天然气集团有限公司 | Single-shot data acquisition method and device for simultaneous excitation of vibroseis |
| CN112415579A (en) * | 2020-11-03 | 2021-02-26 | 中国石油天然气集团有限公司 | Simultaneous source random excitation method, system and device |
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| US5347494A (en) * | 1993-07-01 | 1994-09-13 | Exxon Production Research Company | Shaped-sweep technology |
| US5410517A (en) * | 1994-05-13 | 1995-04-25 | Exxon Production Research Company | Method for cascading sweeps for a seismic vibrator |
| CN104035128B (en) * | 2013-03-06 | 2016-08-03 | 中国石油集团东方地球物理勘探有限责任公司 | Controlled source pseudo random scanning signal creating method |
| CN104375165B (en) * | 2013-08-15 | 2017-02-15 | 中国石油天然气集团公司 | Controlled earthquake source partitioning type simultaneous scanning motivating method |
| CN104597499B (en) * | 2013-10-31 | 2017-02-08 | 中国石油天然气集团公司 | Adjacent shot interference suppressing method and device for independent simultaneous sweeping seismic data of seismic vibrators |
| CN103605154B (en) * | 2013-11-06 | 2016-04-06 | 中国石油集团东方地球物理勘探有限责任公司 | A kind of vibroseis frequency division exciting method simultaneously |
| CN106597523B (en) * | 2016-12-02 | 2018-12-25 | 中国石油天然气集团公司 | A kind of controlled source dynamic scan method and device |
| CN106842362A (en) * | 2017-02-09 | 2017-06-13 | 中国石油天然气集团公司 | The monitoring method and system of a kind of controlled source |
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