CN105866839B - Static correction method and static correction device on basis of common-attitude trace gathers - Google Patents
Static correction method and static correction device on basis of common-attitude trace gathers Download PDFInfo
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- CN105866839B CN105866839B CN201610487239.5A CN201610487239A CN105866839B CN 105866839 B CN105866839 B CN 105866839B CN 201610487239 A CN201610487239 A CN 201610487239A CN 105866839 B CN105866839 B CN 105866839B
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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
- G01V1/28—Processing seismic data, e.g. analysis, for interpretation, for correction
- G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
- G01V1/362—Effecting static or dynamic corrections; Stacking
Abstract
The invention provides a static correction method and a static correction device on the basis of common-attitude trace gathers. The static correction method includes acquiring seismic data acquired by various detectors; linearly dynamically correcting first arrival time of the various trace seismic data according to preset seismic wave velocities on corresponding receiving windows; extracting the common-attitude trace gathers, respectively computing linear dynamic correction processing results of various trace seismic data in the common-attitude trace gathers and linear dynamic correction processing results of various trace seismic data in common-shot-point trace gathers to obtain static correction values of various shot points in the corresponding common-attitude trace gathers and static correction values of each detector in the common-attitude trace gathers, and carrying out static correction according to the static correction values of the shot points corresponding to the seismic data and the static correction values of the detectors in the common-attitude trace gathers. The static correction method and the static correction device have the advantages that problems in the aspect of attitudes of the detectors in plugging and unplugging procedures are considered, the seismic data are statically corrected according to the static correction values of the detectors plugged and unplugged at different time courses, and accordingly the precision and the accuracy of seismic data processing results can be improved.
Description
Technical field
The present invention relates to seismic exploration technique field, in particular to a kind of static correction side based on common attitude road collection
Method and device.
Background technology
Seismic exploration technique is the important exploitation method and skill in the fields such as energy resource survey engineering, Geological Engineering, engineering geophysics
One of art.In classical PRINCIPLE OF SEISMIC PROSPECTING WITH basic theories, it is assumed that earth's surface does not have elevation to change, the overlying ground of exploration targets layer
Layer is horizontal layer isotropic medium.However, in actual seismic exploration industry production, because the earth's surface elevation in work area is deposited
In fluctuations, and the weathered zone of near surface shallow-layer can change in speed and thickness with space, cause to be collected
Geological data be unsatisfactory for classical PRINCIPLE OF SEISMIC PROSPECTING WITH basic theories and assume.Here it is static correction problem.If this problem is obtained
Less than preferably solving, for data processing and Interpretation On The Results are all a puzzlements, surveying accuracy and accuracy are directly influenced.
Therefore, static correction problem is one of seismic prospecting key technology recognized within the industry.
During seismic data process, this problem is solved using static correcting method and technology.For focus and inspection
The static correction value of ripple device, typically can be analyzed calculating by the method such as refraction and chromatography.For the static correction value of focus comes
Say, due to only exciting once on identical source physics point position, therefore its static correction value only has a value.However, due to
May repeatedly plug cymoscope on identical cymoscope physical points position, the sensitivity of the cymoscope that different time is used and
System delay time may be different, and cymoscope and the degree of coupling of the earth of different time plug may be different.Therefore, strict meaning
For in justice, even on identical cymoscope physical points position, the cymoscope that different time is used is differed, no
Can think or an identical cymoscope.It is theoretical and former that cymoscope now is unsatisfactory for the earth's surface-consistent in seismic prospecting
The requirement of reason.
But, the geophone property that different time is plugged is not considered in current static correction data processing method and technology
Problem, it thinks that the corresponding static correction value of cymoscope used on identical cymoscope physical points position is identical, and leads to
Cross fixed static correction value carries out static corrections processing to above-mentioned seismic data process, can affect above-mentioned seismic data process achievement
Precision and accuracy.
Inventor has found under study for action, the static correcting method in prior art in commercial production and scientific research, due to
Be not different the different problem of static correction value of the cymoscope for processing different time plug so as to seismic data process into
The precision and accuracy of fruit is poor.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of static correcting method and dress based on common attitude road collection
Put, static corrections processing is carried out to geological data with the static correction value of the cymoscope plugged according to different time, so as to solve ground
Shake the poor problem of the precision and accuracy of data processing product.
In a first aspect, embodiments providing a kind of static correcting method based on common attitude road collection, methods described bag
Include：
Obtain the geological data of each cymoscope collection in the range of exploration work area；It is right that each described cymoscope is provided with
The attitude identification code answered；
School is linearly moved by the default seimic wave velocity on correspondence reception window to the first arrival time of each road geological data
Just process；
The common attitude road collection of geological data composition that the cymoscope of identical attitude is gathered is extracted in common detector gather；
Respectively knot is processed to the linear NMO of the attitude road collection Zhong Ge road geological data altogether using the quiet calibration method of difference
The linear NMO result of fruit and common-shot-gather Zhong Ge roads geological data is calculated, and obtains the attitude road collection altogether
In each shot point static correction value and the static correction value of each cymoscope in the altogether attitude road collection；
According to the static correction of cymoscope in the corresponding shot statics of each road geological data and the attitude road collection altogether
Amount implements static correction.
With reference in a first aspect, embodiments provide the first possible embodiment of first aspect, wherein, institute
The first arrival time of Shu Duige roads geological data receives the default seimic wave velocity on window and carries out linear NMO process by correspondence,
Including：
The first arrival time of the geological data of each cymoscope collection in the range of pickup exploration work area；
The VELOCITY DISTRIBUTION of the described default seismic wave in the range of analysis exploration work area, and arrange different in the range of exploration work area
The reception window of default seismic wave；Wherein, the default seismic wave includes：Direct wave or refracted wave；
The first arrival time of each road geological data to gathering presses the corresponding default seimic wave velocity received on window
Carry out linear NMO process.
With reference to the first possible embodiment of first aspect, second of first aspect is embodiments provided
Possible embodiment, wherein, the geological data that the cymoscope that identical attitude is extracted in common detector gather is gathered
The common attitude road collection of composition, including：
The geological data of the corresponding cymoscope collection of identical geophone station is extracted, common detector gather is constituted；
Adopted according to the cymoscope that the attitude identification code of the cymoscope extracts identical attitude from the common detector gather
The geological data of collection, forms multiple attitude road collections altogether.
With reference to second possible embodiment of first aspect, the third of first aspect is embodiments provided
Possible embodiment, wherein, using linearly dynamic school of the quiet calibration method of difference to the attitude road collection Zhong Ge road geological data altogether
Positive result is calculated, and obtains the static correction value of each shot point in the attitude road collection altogether, including：
Using the quiet calibration method of difference to altogether the linear NMO of attitude road collection Zhong Ge road geological data is processed each described
As a result calculated, obtained the static correction value of each shot point in each common attitude road collection；
The static correction value in the corresponding all attitude road collections altogether of each shot point is counted successively, obtains the final of each shot point
Static correction value.
With reference to second possible embodiment of first aspect, the 4th kind of first aspect is embodiments provided
Possible embodiment, wherein, using linearly dynamic school of the quiet calibration method of difference to the common-shot-gather Zhong Ge roads geological data
Positive result is calculated, and obtains the static correction value of each cymoscope in the attitude road collection altogether, including：
The linear NMO of common-shot-gather Zhong Ge roads geological data each described is processed using difference quiet calibration method
As a result calculated, obtained the static correction value of each cymoscope in each described attitude road collection altogether；
The static correction value on the corresponding all shot points of each cymoscope in each common attitude road collection is counted successively, obtains each
The final static correction value of the cymoscope of individual attitude.
With reference to the third possible embodiment or the 4th kind of possible embodiment of first aspect, the embodiment of the present invention
There is provided the 5th kind of possible embodiment of first aspect, wherein, using the quiet calibration method of difference in the attitude road collection altogether
Or the linear NMO result of the common-shot-gather Zhong Ge roads geological data is calculated, including：
According to below equation in the altogether attitude road collection or the common-shot-gather Zhong Ge roads geological data it is linear
Dynamic(al) correction result is calculated：Wherein, N represents the attitude road collection altogether
Or in the common-shot-gather geological data road number；T represents static correction value；Δj=Tj+1-TjFor the static correction of two neighboring track
The difference of amount, the first arrival time of adjacent twice is poor after also as described linear NMO is processed.
Second aspect, the embodiment of the present invention additionally provides a kind of static correction device based on common attitude road collection, described device
Including：
Acquisition module, for obtaining the geological data of each cymoscope collection in the range of exploration work area；Each described inspection
Ripple device is provided with corresponding attitude identification code；
Linear NMO processing module, for receiving default on window by correspondence to the first arrival time of each road geological data
Seimic wave velocity carries out linear NMO process；
Abstraction module, the geological data composition that the cymoscope for extracting identical attitude in common detector gather is gathered
Common attitude road collection；
The quiet school computing module of difference, for being total to attitude road collection Zhong Ge road earthquake number to described respectively using the quiet calibration method of difference
According to linear NMO result and the linear NMO result of common-shot-gather Zhong Ge roads geological data counted
Calculate, obtain the static correction value of each shot point and the quiet school for being total to each cymoscope in attitude road collection in the attitude road collection altogether
Positive quantity；
Static corrections processing module, for according to the corresponding shot statics of each road geological data and the attitude road altogether
The static correction value for concentrating cymoscope implements static correction.
With reference to second aspect, the first possible embodiment of second aspect is embodiments provided, wherein, institute
Linear NMO processing module is stated, including：
Pickup unit, for the first arrival time of the geological data of each cymoscope collection in the range of pickup exploration work area；
Analysis setting unit, for the VELOCITY DISTRIBUTION of the described default seismic wave in the range of analysis exploration work area, and is arranged
The reception window of different default seismic waves in the range of exploration work area；Wherein, the default seismic wave includes：Direct wave or refraction
Ripple；
Linear NMO processing unit, for pressing the corresponding reception to the first arrival time of each road geological data for gathering
Default seimic wave velocity on window carries out linear NMO process.
With reference to the first possible embodiment of second aspect, second of second aspect is embodiments provided
Possible embodiment, wherein, the abstraction module, including：
First extracting unit, for extracting the geological data of the corresponding cymoscope collection of identical geophone station, composition detection altogether
Point road collection；
Second extracting unit, phase is extracted for the attitude identification code according to the cymoscope from the common detector gather
With the geological data that the cymoscope of attitude is gathered, attitude road collection altogether is constituted.
With reference to second possible embodiment of second aspect, the third of second aspect is embodiments provided
Possible embodiment, wherein, the quiet school computing module of the difference, including：
The quiet school computing unit of first difference, for using the quiet calibration method of difference to altogether attitude road collection Zhong Ge road each described
The linear NMO result of geological data is calculated, and obtains the quiet of each shot point in each common attitude road collection
Correcting value；
First statistic unit, for counting the static correction value in the corresponding all attitude road collections altogether of each shot point successively, obtains
To the final static correction value of each shot point；
The quiet school computing unit of second difference, for using the quiet calibration method of difference to common-shot-gather Zhong Ge roads each described
The linear NMO result of geological data is calculated, and obtains each cymoscope in each described attitude road collection altogether
Static correction value；
Second statistic unit, for counting each common attitude road collection successively in the corresponding all shot points of each cymoscope
Static correction value, obtain the final static correction value of the cymoscope of each attitude.
A kind of static correcting method and device based on common attitude road collection provided in an embodiment of the present invention, including：Obtain exploration
The geological data of each cymoscope collection in the range of work area；The first arrival time of each road geological data is received on window by correspondence
Default seimic wave velocity carries out linear NMO process；Attitude road collection altogether is extracted in common detector gather；Using the quiet school of difference
Method is respectively to each genuine in the linear NMO result and common-shot-gather of common attitude road collection Zhong Ge road geological data
The linear NMO result of shake data is calculated, and obtains the static correction value and common attitude of each shot point in common attitude road collection
The static correction value of each cymoscope in road collection；According to the corresponding shot statics of each road geological data and common attitude road collection
The static correction value of middle cymoscope implements static correction；
With it is of the prior art due to be not different process different time plug cymoscope static correction value and cause it is right
The precision of seismic data process achievement is poor with accuracy to be compared, and that takes into account pose problem of the cymoscope in swapping process,
Static corrections processing is carried out to geological data according to the static correction value of the cymoscope of different time plug, so as to improve geological data
Process the precision and accuracy of achievement；Also, it is with the sliding low speed of smooth earth's surface peace in static correction value analysis and calculating process
Band is theoretical condition, can more meet the seismic prospecting ultimate principle and method of classics, not only solves surface-consistent statics and asks
Topic, also solves the system time delay problem of shot point and cymoscope.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows a kind of flow chart of static correcting method based on common attitude road collection that the embodiment of the present invention is provided；
Fig. 2 shows that a kind of observation system that the embodiment of the present invention is provided rolls Construction Arrangement schematic diagram；
Fig. 3 shows that the first arrival time to each road geological data that the embodiment of the present invention is provided is received on window by correspondence
Default seimic wave velocity carry out the flow chart of linear NMO process；
Fig. 4 is shown before the single-shot Data correction of certain area FFID=7 that the embodiment of the present invention is provided, green mountain static correction and
Comparison diagram after the technology of the present invention static correction；
Fig. 5 shows before the common detector gather Data correction of certain area REC=533 that the embodiment of the present invention is provided, green
Comparison diagram after mountain static correction and the technology of the present invention static correction；
Fig. 6 shows that the another kind that the embodiment of the present invention is provided is based on the flow process of the static correcting method of attitude road collection altogether
Figure；
Fig. 7 shows a kind of structural representation of static correction device based on common attitude road collection that the embodiment of the present invention is provided
Figure；
Fig. 8 shows a kind of static correction device linear NMO based on common attitude road collection that the embodiment of the present invention is provided
The structural representation of processing module and abstraction module；
Fig. 9 shows the quiet school of difference in a kind of static correction device based on common attitude road collection that the embodiment of the present invention is provided
The structural representation of computing module.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Middle accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
It is a part of embodiment of the invention, rather than the embodiment of whole.The present invention generally described and illustrated in accompanying drawing herein is real
Applying the component of example can be arranged and be designed with a variety of configurations.Therefore, it is of the invention to what is provided in the accompanying drawings below
The detailed description of embodiment is not intended to limit the scope of claimed invention, but is merely representative of the selected reality of the present invention
Apply example.Based on embodiments of the invention, the institute that those skilled in the art are obtained on the premise of creative work is not made
There is other embodiment, belong to the scope of protection of the invention.
In view of the static correcting method in prior art in commercial production and scientific research, process not due to being not different
The static correction value of the cymoscope plugged between simultaneously is different so as to the precision and accuracy of earthquake data processing product compared with
Difference.Based on this, a kind of static correcting method based on common attitude road collection and device are embodiments provided, during with according to difference
Between the static correction value of cymoscope that plugs static corrections processing is carried out to geological data, so as to improve seismic data process achievement
Precision and accuracy.
A kind of static correcting method based on common attitude road collection is embodiments provided, with reference to Fig. 1, methods described includes
Following steps：
S101, the geological data for obtaining each cymoscope collection in the range of exploration work area；Each described cymoscope is all provided with
It is equipped with corresponding attitude identification code.
In the embodiment of the present invention, report record to set up observation system according to seismic prospecting field construction class, and each inspection is set
The attitude identification code of ripple device, then loads the seismic data (i.e. geological data) of each cymoscope field acquisition.Wherein, arrange
The purpose of the attitude identification code of each cymoscope is to distinguish the different attitudes of cymoscope.
S102, the first arrival time to each road geological data are carried out linearly by the default seimic wave velocity on correspondence reception window
Dynamic(al) correction is processed.
In the embodiment of the present invention, linear NMO process is usually enterprising in common-shot-gather (or claiming single shot record)
OK, therefore before linear NMO process is carried out, the geological data composition for extracting the corresponding cymoscope collection of identical shot point is needed
Common-shot-gather, then carries out linear NMO process on common-shot-gather.
Wherein, after above-mentioned first arrival time is excited for shot point, the seismic wave wavefront that it is excited reaches certain observation station,
Cymoscope detects the moment of particle vibration in observation station；Above-mentioned first arrival time is also referred to as first arrival.And first arrival time is default
The basic data of seimic wave velocity (the default seismic wave in the embodiment of the present invention is direct wave or refracted wave) static correction, its is straight
Connect the computational accuracy for having influence on time delay, refractor velocity and low velocity layer speed or thickness.In order to improve first break pickup
Precision, can adopt following measures；Gain, Filtering Processing are carried out to single shot record, improves first arrival display quality.
S103, extract in common detector gather geological data composition that the cymoscope of identical attitude gathered attitude road altogether
Collection.
Specifically, the geological data of the corresponding cymoscope collection of identical geophone station, group are extracted in the embodiment of the present invention first
Into common detector gather；Then the inspection of identical attitude is extracted from above-mentioned common detector gather according to the attitude identification code of cymoscope
The geological data of ripple device collection, forms multiple attitude road collections altogether.
This step is different from currently used method.Use at present and do not differentiate between cymoscope attitude, as long as detection
The physical location of device is identical, and it is a fixed value just to give tacit consent to its static correction value, and corresponding all geological datas are just put together
Carry out the analysis and calculating of static correction value.
However, during practice of construction, in order to obtain uniform degree of covering, seismic observation system will be wanted according to design
Forward movement a certain distance is sought, construction is rolled.Typically in the joint portion of two beam observation systems, identical detector position can be not
Cymoscope is laid on the same engineering time.As shown in Fig. 2 upper figure is the observation system of a monolithic, figure below is after rolling
Observation system, altogether two beams, per beam three, is marked respectively with numeral 1~6, and digital number also illustrates that the priority for rolling construction is suitable
Sequence.Can all there be sum in general field construction troop more than the cymoscope of the cymoscope sum of one and half monolithics arrangement, therefore same
The observation system of adjacent sheet is not in the situation that cymoscope is repeatedly laid in a branch of work progress.But in the weight of different beams
Closing position will have the situation that same detector position repeatedly lays cymoscope.1,2 monolithics and 5,6 monolithics in such as Fig. 1
Coincidence part, same detector position will twice lay cymoscope, due to can guarantee that the cymoscope laid twice is all same
One, i.e., the sensitivity of the cymoscope laid twice is identical.In addition, even the cymoscope for being used twice is same,
Cannot guarantee that the degree of coupling of heeling condition, cymoscope and the earth of the cymoscope of laying of constructing twice is all identical.Therefore, certain
Still believe that the cymoscope that different time is laid is different in the degree of kind.The cymoscope that different time is laid is thought in the present invention
With different attitudes.
Except above-mentioned multi-fold technology may cause the inspection that different time is laid on identical cymoscope physical points position
Outside the attitude of ripple device is differed, also there are many reasons in practice of construction causes the cymoscope on same physical point position with many
Plant attitude.For example, (1) can withdraw same day laying when village is constructed for the construction safety of cymoscope when knocking off
All cymoscopes, lay again for second day again.Thus can at least lay inspections different twice on identical physical points position
Ripple device.(2) when winter constructs, due to the relatively low formation frozen soil of morning temperature, soil is harder when laying cymoscope near surface stratum,
The ice-out near surface stratum, cymoscope is caused to change with the degree of coupling of the earth after at noon because the temperature rises,
Even cymoscope can knockdown.This cymoscope also resulted on same physical point position has different attitudes.(3) filling
When constructing in wooden clump, if wind-force is larger, the cable of tie geophone understands unavoidably towed hydrophone, causes the attitude of cymoscope
Change.
On same physical point position, if the attitude of cymoscope there occurs change, for geological data changing in time
Change most significantly has two aspects.(1) in the case of same physical point position, different cymoscopes, because cymoscope is being used
During can have different system time delays because of infringement, the factor such as aging, different cymoscopes.Therefore, if identical
Different cymoscopes are laid on physical points position, then its system time delay amount is different, can cause the static correction value of cymoscope
It is different.(2) same physical point position, identical cymoscope, under the conditions of different layings, because the heeling condition of cymoscope is different and
When different from the degree of coupling of the earth, the sensitivity of cymoscope can change, and different take-offs can be shown in terms of the time
Postpone, then static correction value is different.
In this regard, the embodiment of the present invention considers the above-mentioned attitude of cymoscope, first, in common detector gather, sub-elect
The geological data of the collection of the cymoscope with identical attitude, the geological data corresponding to the cymoscope of above-mentioned different attitudes is constituted not
Same common attitude road collection.
In the embodiment of the present invention, the method that the attitude of cymoscope is identified, mainly according in field construction class report
Cymoscope construction laying time record determines the identification code of attitude with the cymoscope inclination angle size of field acquisition system record, and
The cymoscope of correspondence attitude is identified using the identification code for determining.
S104, respectively knot is processed to the linear NMO of common attitude road collection Zhong Ge road geological data using the quiet calibration method of difference
The linear NMO result of fruit and common-shot-gather Zhong Ge roads geological data is calculated, and obtains each in common attitude road collection
The static correction value of each cymoscope in the static correction value of individual shot point and altogether attitude road collection.
It is to be based on the theory hypothesis that smooth earth's surface peace slides weathering zone because step 102 carry out linear NMO to process, its
Can be good at meeting the implementation condition of the quiet calibration method of first-order difference, therefore, this step is using the quiet calibration method of first-order difference to altogether
The linear NMO result of attitude road collection Zhong Ge road geological data is analyzed and calculates, to obtain common attitude road collection in
The static correction value of each shot point；Meanwhile, using the quiet calibration method of first-order difference to the linear of common-shot-gather Zhong Ge roads geological data
Dynamic(al) correction result is analyzed and calculates, to obtain common attitude road collection in each cymoscope static correction value.
S105, according in the corresponding shot statics of each road geological data and the altogether attitude road collection cymoscope it is quiet
Correcting value implements static correction.
Specifically, static correction is implemented to the shot point according to each road geological data corresponding shot statics；Likewise,
Cymoscope static correction value according to the corresponding attitude road collection altogether of the road geological data implements static correction to corresponding cymoscope.
A kind of static correcting method based on common attitude road collection provided in an embodiment of the present invention, with of the prior art due to not having
Have any different the cymoscope for processing different time plug static correction value and cause to the precision of earthquake data processing product and accurately
Property it is poor compare, that takes into account pose problem of the cymoscope in swapping process, according to different time plug cymoscope it is quiet
Correcting value carries out static corrections processing to geological data, so as to improve the precision and accuracy of seismic data process achievement；Also,
It is to meet classics as theoretical condition, more to smooth the sliding weathering zone of earth's surface peace in static correction value analysis and calculating process
Seismic prospecting ultimate principle and method, not only solve the problems, such as surface-consistent statics, and also solve shot point and cymoscope is
System time delay problem.
With reference to Fig. 3, corresponding to above-mentioned steps 102, the first arrival time of each road geological data is received on window by correspondence
Default seimic wave velocity carries out the concrete grammar of linear NMO process to be included：
The first arrival time of the geological data of each cymoscope collection in the range of S201, pickup exploration work area.
The VELOCITY DISTRIBUTION of the default seismic wave in the range of S202, analysis exploration work area, and arrange in the range of exploration work area not
With the reception window of default seismic wave；Wherein, default seismic wave includes：Direct wave or refracted wave.
S203, the first arrival time to each road geological data of collection press the default seimic wave velocity on corresponding reception window
Carry out linear NMO process.
With reference to above-mentioned steps 201~203, specifically, in conventional static correction flow process, well depth correction and elevation (or ground
Shape) correction be that shot point and cymoscope are corrected on a datum level so that field data collection condition meets horizontal earth's surface
Theory hypothesis；Secondly, weathering correction is the speed that weathering zone under datum level is replaced with basement rock speed so that datum level is to basement rock
Become uniform dielectric between face, meet the uniform theory hypothesis of near surface medium.Therefore, need accurately in conventional static correction
Well depth survey and the measurement of higher degree, in addition it is also necessary to do weathering zone investigation, the theory hypothesis of ray vertical exit are also implied in addition, and
And, above-mentioned static correction flow process can have that the energy excitation system time delay of shot point and the reception system time of cymoscope prolong
Slow problem.
However, linearly moved using the speed of direct wave substantially and the speed of refracted wave in the embodiment of the present invention
Analyze again and deriving static correction values after correction, it is smooth earth's surface and gentle weathering zone that its basic theories is assumed, this is more
Meet the theory hypothesis of seismic prospecting.Implement after static correction through the present invention, shot point and cymoscope are located at a smooth ground
On surface, that is to say on datum level.By taking direct wave as an example, in the single-shot data after static correction on adjacent cymoscope at the beginning of direct wave
Be to the time it is smooth, even point-blank.The direct wave time curve of the adjacent shot point in common detector gather
It is smooth.This can more check the effect of static correction, theoretic because being what situation regardless of underground weathering zone, basement rock etc.
The corresponding time curve of direct wave first arrival time is straight line.But because having well depth correction, height in conventional static correction
Cheng Jiaozheng and weathering correction, not necessarily can guarantee that direct wave time curve is the hypothesis of straight line.Equally, Jing present invention correction
The time curve of refracted wave afterwards is also smooth, even straight line.
For the process problem of replacement velocity, in the embodiment of the present invention, it may be preferred to using accurate low speed tape speed
Distributed data carries out weathering zone replacement；Above-mentioned weathering zone replacement can not also be carried out because this be exactly originally underground medium just
Often seismic response, can increase velocity analysiss and process to superficial part bottom in follow-up seismic data process.
In addition, the primary condition by the above-mentioned earth's surface to smooth and gentle weathering zone as object function, the line for carrying out
Property dynamic(al) correction processing procedure, also solves the energy excitation system time delay problem of shot point and the reception system time of cymoscope
Delay issue.The system time delay problem of shot point and cymoscope is not belonging to earth's surface hypsography problem and underground weathering zone is asked
Topic, therefore have no idea to solve in conventional static correction technology.But, this problem is general in actual industrial production
Store-through because focus and cymoscope during long-term use can due to infringement, it is aging the problems such as cause its system to be prolonged
There is difference, its sensitivity and changes in the slow time.
Further, the geological data of the cymoscope collection of identical attitude in common detector gather is extracted in step 103, can
It is corresponding to form multiple attitude road collections altogether, using the quiet calibration method of difference to the linear of common attitude road collection Zhong Ge road geological data
Dynamic(al) correction result is calculated, and obtains the static correction value of each shot point in common attitude road collection, including：
Step 1, the linearly dynamic school using the quiet calibration method of difference to common attitude road collection Zhong Ge road geological data each described
Positive result is calculated, and obtains the static correction value of each shot point in each common attitude road collection；
Step 2, the static correction value counted successively in the corresponding all attitude road collections altogether of each shot point, obtain each shot point
Final static correction value.
With reference to above-mentioned steps 1 and step 2, altogether attitude road collection has multiple, and each common attitude road collection is including how genuine
Shake data, in the embodiment of the present invention, then using the quiet calibration method of difference to all attitude road collection and each common attitude road collection altogether
In all of geological data calculated, obtain the static correction value of each shot point in each common attitude road collection, Ran Houyi
The secondary static correction value counted in the corresponding all attitude road collections altogether of each shot point, obtains the final static correction value of each shot point.
Further, common-shot-gather equally include it is multiple, using the quiet calibration method of difference to each genuine in common-shot-gather
The linear NMO result of shake data is calculated, and obtains the static correction value of each cymoscope in common attitude road collection, is had
Body method includes：
Step 3, the linearly dynamic school using the quiet calibration method of difference to common-shot-gather Zhong Ge roads geological data each described
Positive result is calculated, and obtains the static correction value of each cymoscope in each described attitude road collection altogether；
Step 4, the static correction value on the corresponding all shot points of each cymoscope in each common attitude road collection is counted successively,
Obtain the final static correction value of the cymoscope of each attitude.
With reference to above-mentioned steps 3 and step 4, common-shot-gather equally has multiple, and each common attitude road collection is corresponding more
The geological data that individual shot point is excited.In the embodiment of the present invention, then using the quiet calibration method of difference to all common-shot-gathers and
All of geological data is calculated in each common-shot-gather, obtains each cymoscope in each common attitude road collection
Static correction value, then counts successively the static correction value on the corresponding all shot points of each cymoscope in each common attitude road collection,
Obtain the final static correction value of the cymoscope of each attitude.
In the embodiment of the present invention, using the quiet calibration method of difference in each common attitude road collection or each common-source point road
The method for concentrating the linear NMO result of each road geological data to be calculated, it is specific as follows：
According to below equation in the altogether attitude road collection or the common-shot-gather Zhong Ge roads geological data it is linear
Dynamic(al) correction result is calculated：
Wherein, when the linear NMO result to common attitude road collection Zhong Ge road geological data is calculated, N is represented
The road number of geological data in the attitude road collection altogether；T represents the static correction value of each shot point；J represents the attitude road collection altogether
In any together geological data；
When the linear NMO result to common-shot-gather Zhong Ge roads geological data is calculated, N represents described
The road number of geological data in common-shot-gather；T represents the static correction value of the cymoscope of each attitude；J represents the common-source point road
Concentrate geological data arbitrarily together；
Above-mentioned Δj=Tj+1-TjFor the difference of the static correction value of two neighboring track, phase after also as described linear NMO is processed
The first arrival time of adjacent twice is poor.Specifically, after linear NMO, the corresponding first arrival of two neighboring cymoscope in single-shot data
The difference of time is equal to the difference of static correction value.The first arrival time for assuming two adjacent cymoscopes of certain big gun is t1And t2, geophone offset point
Wei not X1And X2, it is that same direct wave (or refracted wave) receives window, its corresponding direct wave (or refracted wave) speed is
V, then the first arrival time after linear NMO be respectively T1=t1-X1/ V, T2=t2-X2/V.If there is no static correction problem, line
First arrival time T after property dynamic(al) correction1And T2Will be of substantially equal, and go to zero；If static correction problem, above-mentioned T1And T2
It is equal to static correction value, and both differences are equal to the difference of static correction value.
Assume there is N (N is odd number) road earthquake record in direct wave (or refracted wave) receives window, with a simple case
For, it is assumed that N=9, then difference is sought successively, it is corresponding to have 8 static correction value differences,
From top to bottom each formula is multiplied by respectively successively coefficient 1, and 2,3,4,4,3,2,1, first four are carried out suing for peace can obtain：
Δ1+2Δ2+3Δ3+4Δ4=-T1-T2-T3-T4+4T5 (2)
Rear four summations to above formula can be obtained：
Δ8+2Δ7+3Δ6+4Δ5=T6+T7+T8+T9-4T5 (3)
(3) formula-(2) formula, and coefficient identical item is merged and can be obtained
In the case of smooth earth's surface or smooth weathering zone, this corresponding static correction value sum of 9 cymoscopes goes to zero,
The static correction value of cymoscope placed in the middle can be then calculated：
Usually, suitable cymoscope number can be selected according to specific geology seismic condition, gradually sliding calculates
Corresponding cymoscope static correction value, its computing formula is：
Corresponding, the static correction value of the minority cymoscope at two ends can carry out smooth extrapolation and obtain according to above-mentioned formula (6).
A kind of static correcting method based on common attitude road collection provided in an embodiment of the present invention, with of the prior art due to not having
Have any different the cymoscope for processing different time plug static correction value and cause to the precision of earthquake data processing product and accurately
Property it is poor compare, that takes into account pose problem of the cymoscope in swapping process, according to different time plug cymoscope it is quiet
Correcting value carries out static corrections processing to geological data, so as to improve the precision and accuracy of seismic data process achievement；Also,
It is to meet classics as theoretical condition, more to smooth the sliding weathering zone of earth's surface peace in static correction value analysis and calculating process
Seismic prospecting ultimate principle and method, not only solve the problems, such as surface-consistent statics, and also solve shot point and cymoscope is
System time delay problem.
Below in conjunction with accompanying drawing Fig. 4~Fig. 6, detailed description it is provided in an embodiment of the present invention based on the quiet of common attitude road collection
The detailed process of bearing calibration.
Embodiments provide a kind of static correcting method based on common attitude road collection, for realizing seismic prospecting in it is quiet
Correcting value is analyzed and corrected.The method includes two technical measures：One is that different common attitudes are extracted in common detector gather
Road collection, follow-up static correction value analysis and correction is carried out in common attitude road collection, even identical cymoscope, but as long as its appearance
State difference cannot together carry out statistical analysiss and correction.Two be static correction value analysis and calculating process in, be with smoothly
Table and smooth weathering zone are theoretical condition, can more meet the seismic prospecting ultimate principle and method of classics, not only solve earth's surface one
Cause property static correction problem, also solves the system time delay problem of shot point and cymoscope.
S301, reported record to set up observation system according to seismic prospecting field construction class, and the attitude of each cymoscope is set
Identification code, loads the seismic data of each cymoscope field acquisition.
S302, loading geological data on the first break picking time, analysis exploration work area in the range of direct wave and refraction
The VELOCITY DISTRIBUTION of ripple, and the direct wave and the reception window of refracted wave of zones of different in the range of exploration work area are set.
S303, the first arrival time to each road geological data are entered by the through wave velocity on correspondence window or refraction wave velocity
The process of row linear NMO.
S304, attitude identification code cymoscope of the extraction with identical attitude according to cymoscope in common detector gather are adopted
The geological data of collection, forms multiple attitude road collections altogether.
S305, linear NMO result in each altogether attitude road collection is calculated according to the quiet calibration method of difference, obtained
The corresponding static correction value of each shot point in the common attitude road collection.
Static correction value in the common attitude road collection of the corresponding whole of each shot point of S306, successively statistical analysiss, obtains each
The final static correction value of shot point.
S307, extraction common-shot-gather, knot is processed according to the quiet calibration method of difference to linear NMO on the common-shot-gather
Fruit is calculated, and obtains the static correction value of each cymoscope.
S308, the static correction value on the corresponding all shot points of each cymoscope in each common attitude road collection is counted successively,
Obtain the final static correction value of the cymoscope of each attitude.
S309, according to the detection of the final static correction value of the corresponding shot point of each road geological data and corresponding altogether attitude road collection
The final static correction value of device implements static correction.
A kind of static correcting method based on common attitude road collection provided in an embodiment of the present invention, with of the prior art due to not having
Have any different the cymoscope for processing different time plug static correction value and cause to the precision of earthquake data processing product and accurately
Property it is poor compare, that takes into account pose problem of the cymoscope in swapping process, according to different time plug cymoscope it is quiet
Correcting value carries out static corrections processing to geological data, so as to improve the precision and accuracy of seismic data process achievement；Also,
It is to meet classics as theoretical condition, more to smooth the sliding weathering zone of earth's surface peace in static correction value analysis and calculating process
Seismic prospecting ultimate principle and method, not only solve the problems, such as surface-consistent statics, and also solve shot point and cymoscope is
System time delay problem.
The embodiment of the present invention additionally provides a kind of static correction device based on common attitude road collection, and described device is used to perform
The static correcting method based on attitude road collection altogether is stated, with reference to Fig. 7, described device includes：
Acquisition module 10, for obtaining the geological data of each cymoscope collection in the range of exploration work area；
The cymoscope is provided with corresponding attitude identification code；
Linear NMO processing module 20, for receiving pre- on window by correspondence to the first arrival time of each road geological data
If seimic wave velocity carries out linear NMO process；
Abstraction module 30, the geological data group that the cymoscope for extracting identical attitude in common detector gather is gathered
Into common attitude road collection；
The quiet school computing module 40 of difference, for being total to the road earthquake of attitude road collection Zhong Ge to described respectively using the quiet calibration method of difference
The linear NMO result of data and the linear NMO result of common-shot-gather Zhong Ge roads geological data are carried out
Calculate, obtain in the altogether attitude road collection the quiet of each cymoscope in the static correction value of each shot point and the attitude road collection altogether
Correcting value；
Static corrections processing module 50, for according to the corresponding shot statics of each road geological data and the attitude altogether
The static correction value of cymoscope implements static correction in road collection.
Further, with reference to Fig. 8, in the above-mentioned static correction device based on common attitude road collection, linear NMO processing module
20, including：
Pickup unit 201, for the first arrival time of the geological data of each cymoscope collection in the range of pickup exploration work area；
Analysis setting unit 202, for the VELOCITY DISTRIBUTION of the described default seismic wave in the range of analysis exploration work area, and sets
Put the reception window of different default seismic waves in the range of exploration work area；Wherein, the default seismic wave includes：Direct wave or folding
Ejected wave；
Linear NMO processing unit 203, for pressing corresponding reception to the first arrival time of each road geological data for gathering
Default seimic wave velocity on window carries out linear NMO process.
Further, with reference to Fig. 8, in the above-mentioned static correction device based on common attitude road collection, abstraction module 30, including：
First extracting unit 301, for extracting the geological data of the corresponding cymoscope collection of identical geophone station, composition inspection altogether
Wave point road collection；
Second extracting unit 302, takes out for the attitude identification code according to the cymoscope from the common detector gather
The geological data of the cymoscope collection of identical attitude is taken, attitude road collection altogether is constituted.
Further, with reference to Fig. 9, in the above-mentioned static correction device based on common attitude road collection, the quiet school computing module 40 of difference,
Including：
The quiet school computing unit 401 of first difference, for using the quiet calibration method of difference to each described altogether in attitude road collection
The linear NMO result of each road geological data is calculated, and obtains each shot point in each common attitude road collection
Static correction value；
First statistic unit 402, for counting the static correction value in the corresponding all attitude road collections altogether of each shot point successively,
Obtain the final static correction value of each shot point；
The quiet school computing unit 403 of second difference, for using the quiet calibration method of difference in common-shot-gather each described
The linear NMO result of each road geological data is calculated, and obtains each detection in each described attitude road collection altogether
The static correction value of device；
Second statistic unit 404, for counting each common attitude road collection successively in the corresponding all big guns of each cymoscope
Static correction value on point, obtains the final static correction value of the cymoscope of each attitude.
Further, with reference to Fig. 9, in the above-mentioned static correction device based on common attitude road collection, the quiet school computing module 40 of difference
Specifically at linear NMO of the below equation in common attitude road collection or common-shot-gather Zhong Ge roads geological data
Reason result is calculated：Wherein, N represents common attitude road collection or common-shot-gather
The road number of middle geological data；T represents static correction value；J represents geological data arbitrarily together.
A kind of static correction device based on common attitude road collection provided in an embodiment of the present invention, with of the prior art due to not having
Have any different the cymoscope for processing different time plug static correction value and cause to the precision of earthquake data processing product and accurately
Property it is poor compare, that takes into account pose problem of the cymoscope in swapping process, according to different time plug cymoscope it is quiet
Correcting value carries out static corrections processing to geological data, so as to improve the precision and accuracy of seismic data process achievement；Also,
It is to meet classics as theoretical condition, more to smooth the sliding weathering zone of earth's surface peace in static correction value analysis and calculating process
Seismic prospecting ultimate principle and method, not only solve the problems, such as surface-consistent statics, and also solve shot point and cymoscope is
System time delay problem.
The device of the static correction based on common attitude road collection that the embodiment of the present invention is provided can be specific hard on equipment
Part or the software being installed on equipment or firmware etc..The device that the embodiment of the present invention is provided, it realizes principle and generation
Technique effect is identical with preceding method embodiment, is brief description, and device embodiment part does not refer to part, refers to aforementioned side
Corresponding contents in method embodiment.Those skilled in the art can be understood that, for convenience and simplicity of description, aforementioned
The specific work process of the system, device and unit of description, may be referred to the corresponding process in said method embodiment, here
Repeat no more.
In embodiment provided by the present invention, it should be understood that disclosed apparatus and method, other sides can be passed through
Formula is realized.Device embodiment described above is only schematic, and for example, the division of the unit, only one kind are patrolled
Volume function is divided, and can have other dividing mode when actually realizing, and for example, multiple units or component can with reference to or can
To be integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or discussed each other
Coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some communication interfaces, device or unit
Connect, can be electrical, mechanical or other forms.
The unit as separating component explanation can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can according to the actual needs be selected to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in the embodiment that the present invention is provided can be integrated in a processing unit, also may be used
Being that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.
If the function is realized and as independent production marketing or when using using in the form of SFU software functional unit, can be with
In being stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the invention.
And aforesaid storage medium includes：USB flash disk, portable hard drive, read only memory (ROM, Read-Only Memory), random access memory are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and is explained in subsequent accompanying drawing, additionally, term " the
One ", " second ", " the 3rd " etc. are only used for distinguishing description, and it is not intended that indicating or implying relative importance.
Finally it should be noted that：Embodiment described above, specific embodiment only of the invention, to illustrate the present invention
Technical scheme, rather than a limitation, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this
It is bright to be described in detail, it will be understood by those within the art that：Any those familiar with the art
The invention discloses technical scope in, it still can modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of embodiment of the present invention technical scheme.The protection in the present invention should all be covered
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of static correcting method based on common attitude road collection, it is characterised in that methods described includes：
Obtain the geological data of each cymoscope collection in the range of exploration work area；Each described cymoscope is provided with corresponding
Attitude identification code；
Extract the geological data composition common-shot-gather of the corresponding cymoscope collection of identical shot point, the first arrival to each road geological data
Time receives the default seimic wave velocity on window and carries out linear NMO process by correspondence；
The common attitude road collection of geological data composition that the cymoscope of identical attitude is gathered is extracted in common detector gather；
Using the quiet calibration method of difference respectively to the linear NMO result of the altogether attitude road collection Zhong Ge road geological data with
And the linear NMO result of common-shot-gather Zhong Ge roads geological data is calculated, obtain each in the attitude road collection altogether
The static correction value of each cymoscope in the static correction value of individual shot point and the attitude road collection altogether；
According to the static correction value reality of cymoscope in the corresponding shot statics of each road geological data and the attitude road collection altogether
Apply static correction.
2. the static correcting method based on common attitude road collection according to claim 1, it is characterised in that described to each road earthquake
The first arrival time of data receives the default seimic wave velocity on window and carries out linear NMO process by correspondence, including：
The first arrival time of the geological data of each cymoscope collection in the range of pickup exploration work area；
The VELOCITY DISTRIBUTION of the described default seismic wave in the range of analysis exploration work area, and arrange different default in the range of exploration work area
The reception window of seismic wave；Wherein, the default seismic wave includes：Direct wave or refracted wave；
The first arrival time of each road geological data to gathering is carried out by the default seimic wave velocity on the corresponding reception window
Linear NMO process.
3. the static correcting method based on common attitude road collection according to claim 2, it is characterised in that described in common receiver
The common attitude road collection of geological data composition that the cymoscope of identical attitude is gathered is extracted in road collection, including：
The geological data of the corresponding cymoscope collection of identical geophone station is extracted, common detector gather is constituted；
The cymoscope collection of identical attitude is extracted from the common detector gather according to the attitude identification code of the cymoscope
Geological data, forms multiple attitude road collections altogether.
4. the static correcting method based on common attitude road collection according to claim 3, it is characterised in that using the quiet school side of difference
Method is calculated the linear NMO result of the attitude road collection Zhong Ge road geological data altogether, obtains the attitude road altogether
The static correction value of each shot point is concentrated, including：
Using linear NMO result of the quiet calibration method of difference to common attitude road collection Zhong Ge road geological data each described
Calculated, obtained the static correction value of each shot point in each common attitude road collection；
The static correction value in the corresponding all attitude road collections altogether of each shot point is counted successively, obtains the final quiet school of each shot point
Positive quantity.
5. the static correcting method based on common attitude road collection according to claim 3, it is characterised in that using the quiet school side of difference
Method is calculated the linear NMO result of the common-shot-gather Zhong Ge roads geological data, obtains the attitude road altogether
The static correction value of each cymoscope is concentrated, including：
Using linear NMO result of the quiet calibration method of difference to common-shot-gather Zhong Ge roads geological data each described
Calculated, obtained the static correction value of each cymoscope in each described attitude road collection altogether；
The static correction value on the corresponding all shot points of each cymoscope in each common attitude road collection is counted successively, obtains each appearance
The final static correction value of the cymoscope of state.
6. the static correcting method based on common attitude road collection according to claim 4 or 5, it is characterised in that quiet using difference
Calibration method in the altogether attitude road collection or the common-shot-gather Zhong Ge roads geological data linear NMO result
Calculated, including：
According to below equation in the altogether attitude road collection or the common-shot-gather Zhong Ge roads geological data linearly dynamic school
Positive result is calculated：Wherein, N represents attitude road collection or the institute altogether
State the road number of geological data in common-shot-gather；T represents static correction value；Δj=Tj+1-TjFor two neighboring track static correction value it
Difference, the first arrival time of adjacent twice is poor after also as described linear NMO is processed.
7. a kind of static correction device based on common attitude road collection, it is characterised in that described device includes：
Acquisition module, for obtaining the geological data of each cymoscope collection in the range of exploration work area；Each described cymoscope
It is provided with corresponding attitude identification code；
Linear NMO processing module, for extracting the geological data composition common-source point road of the corresponding cymoscope collection of identical shot point
Collection, is carried out at linear NMO to the first arrival time of each road geological data by the default seimic wave velocity on correspondence reception window
Reason；
Abstraction module, the common appearance of geological data composition that the cymoscope for extracting identical attitude in common detector gather is gathered
State road collection；
The quiet school computing module of difference, for using the quiet calibration method of difference respectively to the altogether attitude road collection Zhong Ge road geological data
The linear NMO result of linear NMO result and common-shot-gather Zhong Ge roads geological data is calculated, and is obtained
The static correction value of each shot point and the static correction value for being total to each cymoscope in attitude road collection in attitude road collection are total to described；
Static corrections processing module, for according in the corresponding shot statics of each road geological data and the attitude road collection altogether
The static correction value of cymoscope implements static correction.
8. the static correction device based on common attitude road collection according to claim 7, it is characterised in that the linear NMO
Processing module, including：
Pickup unit, for the first arrival time of the geological data of each cymoscope collection in the range of pickup exploration work area；
Analysis setting unit, for the VELOCITY DISTRIBUTION of the described default seismic wave in the range of analysis exploration work area, and arranges exploration
The reception window of different default seismic waves in the range of work area；Wherein, the default seismic wave includes：Direct wave or refracted wave；
Linear NMO processing unit, for pressing the corresponding reception window to the first arrival time of each road geological data for gathering
On default seimic wave velocity carry out linear NMO process.
9. the static correction device based on common attitude road collection according to claim 8, it is characterised in that the abstraction module,
Including：
First extracting unit, for extracting the geological data of the corresponding cymoscope collection of identical geophone station, composition common receiver road
Collection；
Second extracting unit, for the attitude identification code according to the cymoscope identical appearance is extracted from the common detector gather
The geological data of the cymoscope collection of state, constitutes attitude road collection altogether.
10. the static correction device based on common attitude road collection according to claim 9, it is characterised in that the quiet school of the difference
Computing module, including：
The quiet school computing unit of first difference, for using the quiet calibration method of difference to altogether attitude road collection Zhong Ge road earthquake each described
The linear NMO result of data is calculated, and obtains the static correction of each shot point in each common attitude road collection
Amount；
First statistic unit, for counting the static correction value in the corresponding all attitude road collections altogether of each shot point successively, obtains every
The final static correction value of one shot point；
The quiet school computing unit of second difference, for using the quiet calibration method of difference to common-shot-gather Zhong Ge road earthquakes each described
The linear NMO result of data is calculated, and obtains the quiet school of each cymoscope in each described attitude road collection altogether
Positive quantity；
Second statistic unit, for counting each common attitude road collection successively in it is quiet on the corresponding all shot points of each cymoscope
Correcting value, obtains the final static correction value of the cymoscope of each attitude.
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