Content of the invention
For the deficiencies in the prior art, an object of the present invention is to solve present in above-mentioned prior art
One or more problems.For example, an object of the present invention is to provide one kind to be capable of to low signal-to-noise ratio, remaining greatly quiet school
The method that the seismic data of positive quantity (for example, Value of residual static correction is more than 1/2 cycle of seismic wave waveform) carries out residual static correction.
To achieve these goals, the invention provides a kind of geological data residual static correction side based on ant group algorithm
Method.Methods described includes the first operation or the second operation, and wherein, described first operation is included single-shot geological data through field
Common midpoint gather gather after static correction and dynamic correction is common-shot-gather, and described common-shot-gather is carried out successively with
Lower process:
Step a:
A1, it is that the every random together of common-shot-gather generates one and initially remain according to the scope of default Value of residual static correction
Remaining static correction value, forms the initial disaggregation of common-shot-gather Value of residual static correction;A2, according to the remaining quiet school of described common-shot-gather
The initial disaggregation of positive quantity is simultaneously scanned for using ant group algorithm, obtains the optimal solution set of common-shot-gather Value of residual static correction and answers
For residual static correction is carried out together to the every of common-shot-gather.
Step b:
Judge whether to meet final end condition: if meeting final end condition, stop computing;If being unsatisfactory for final end
Only condition, then will carry out the data after residual static correction process using the optimal solution set of described common-shot-gather Value of residual static correction
Gather is common detector gather, and execution step c.
Step c:
C1, according to the scope of default Value of residual static correction be common detector gather every together random generate one initial
Value of residual static correction, forms the initial disaggregation of common detector gather Value of residual static correction;C2, according to described common detector gather remain
The initial disaggregation of remaining static correction value is simultaneously scanned for using ant group algorithm, obtains the optimum of common detector gather Value of residual static correction
Disaggregation simultaneously is applied to carry out residual static correction together to the every of common detector gather.
Step d:
Judge whether to meet final end condition: if meeting final end condition, stop computing;If being unsatisfactory for final end
Only condition, then return execution step a;Described second operation is included single-shot geological data after field statics and dynamic correction
Common midpoint gather gather be common detector gather, and described common detector gather is carried out successively with following process:
Step a ': operate using with the step c identical in the described first operation.
Step b ': judge whether to meet final end condition: if meeting final end condition, stop computing;If discontented
The final end condition of foot, then will be carried out at residual static correction using the optimal solution set of described common detector gather Value of residual static correction
Data sorting after reason is common-shot-gather, and executes described step c '.
Step c ': operate using with the step a identical in the described first operation.
Step d ': judge whether to meet final end condition: if meeting final end condition, stop computing;If discontented
The final end condition of foot, then return execution step a '.
According to an embodiment based on the geological data residual static corrections of ant group algorithm for the present invention, described step a2
Including:
A21, the n-th solution that m ant be respectively placed in common-shot-gather Value of residual static correction concentrate corresponding road residue quiet
On the node that correcting value is located, carry out the t time loop iteration (abbreviation iteration) in big gun domain, wherein, m is equal to common-shot-gather
Total road number, the initial value of t and n is 1, and as n=1, the n-th disaggregation is the first of described common-shot-gather Value of residual static correction
Beginning disaggregation.
A22, using n-th solution set pair common-shot-gather carry out the t time residual static correction, calculate by Equation 1 below and compare
Amplitude energy e compared with the superposition road of the common-shot-gather after the t time residual static correctiontAfter the t-1 time residual static correction
Common-shot-gather superposition road amplitude energy et-1, wherein, as t=1, e0Before first time residual static correction step
Common-shot-gather superposition road amplitude energy,
Equation 1:
In equation 1, m is total road number of common-shot-gather, and t is total number of samples of seismic channel,It is that the t time residue is quiet
The amplitude energy of k-th sampling point in jth road of the common-shot-gather after correction.
Work as et≤et-1When, then the n-th solution is concentrated the Value of residual static correction in each road to carry out random perturbation and calculated according to ant colony
The probability branch mode of method, to select the Value of residual static correction after every one disturbance in common-shot-gather, forms common-shot-gather and remains
(n+1)th disaggregation of remaining static correction value, wherein, the probability branch mode of described ant group algorithm is:
First, the kth ant positioned at node i during the t time iteration is calculated according to equation 2 below and transfer to next node
The transition probability of jWherein, node i is the node corresponding to Value of residual static correction that the n-th solution concentrates kth road, and node j is
N-th solution concentrates the node corresponding to Value of residual static correction that the Value of residual static correction in kth road obtains after random perturbation.
Equation 2:
In equation 2, τijT () represents that all ants are retained in the letter to j node path for the i-node in the t time iteration
Breath element amount, τisT () represents that all ants are retained in the pheromones amount to s node path for the i-node, i-node in the t time iteration
Represent other all optional paths, η in addition to i-node to j node path to s node pathijT () is heuristic function, be i-node
To the inverse of j node Euclidean distance, ηisT () is the inverse to s node Euclidean distance for the i-node, α represents transfer track
Importance, β represents the relative importance of visibility.
Then, compareWith default acceptance probability pacp, judge whether that accepting ant k transfers to jth from the i-th node
Node:
WhenWhen, then accept the residue that the n-th solution concentration kth road Value of residual static correction is obtained after disturbance
Static correction value concentrates the Value of residual static correction in kth road as the (n+1)th solution;WhenWhen, then refuse to concentrate the n-th solution
The Value of residual static correction that kth road Value of residual static correction obtains after disturbance concentrates the residual static correction in kth road as the (n+1)th solution
Amount, and again concentrate the Value of residual static correction in kth road to carry out disturbance the n-th solution, then turned according to the probability of described ant group algorithm
Shifting mode judge whether to accept to concentrate the n-th solution the kth road Value of residual static correction Value of residual static correction after disturbance again as
(n+1)th solution concentrates the Value of residual static correction in kth road, until
Finally, after all ants all complete the selecting and form the (n+1)th disaggregation of next node, fresh information element, make t
=t+1, n=n+1 simultaneously return execution step a21.
Work as et> et-1When, then using the n-th disaggregation as common-shot-gather Value of residual static correction current optimal solution set;a23、
Determine whether to meet big gun domain end condition: if being unsatisfactory for big gun domain end condition, the n-th solution is concentrated with the residual static correction in each road
The disaggregation that amount carries out random perturbation and constituted disturbance Hou Ge road Value of residual static correction is remaining directly as common-shot-gather
(n+1)th disaggregation of static correction value, makes t=t+1, and n=n+1 simultaneously returns execution step a21;If meeting big gun domain end condition, by
N disaggregation is as the optimal solution set of common-shot-gather Value of residual static correction.
According to an embodiment based on the geological data residual static corrections of ant group algorithm for the present invention, described step
The big gun domain end condition of a23 is: after determining whether t reaches big gun domain maximum iteration time and determine the t time residual static correction
The amplitude energy e in the superposition road of common-shot-gather datatWith the common-shot-gather data after the t-1 time residual static correction step
Superposition road amplitude energy et-1Difference whether reach minimum, work as et-et-1It is not reaching to minimum and t is not up to big gun domain maximum
During iterations, judge not meeting big gun domain end condition;Work as et-et-1Reach minimum or t reaches big gun domain maximum iteration time
When, judge to meet big gun domain end condition;Wherein, described step a21 and a22 are repeated several times and cannot obtain and compare et-et-1Less
Difference when judge et-et-1Reach minimum.
According to an embodiment based on the geological data residual static corrections of ant group algorithm for the present invention, described step
A22 carries out Pheromone update according to equation 3 below.
Equation 3:
τij(t+1)=(1- ζ) τij(t)+δτij(t)
In equation 3,ζ is pheromones attenuation coefficient, ζ=ρt, and ρ
It is 0~1 constant, t is iterations.
According to an embodiment based on the geological data residual static corrections of ant group algorithm for the present invention, its feature exists
In described step c2 includes:
C21, the n-th ' solution that m ' ant be respectively placed in common detector gather concentrate corresponding road Value of residual static correction institute
Node on, m ' be equal to common detector gather total road number, carry out the secondary loop iteration of t ' in industry disturbance in geophone domain, wherein, t '
It is 1 with the initial value of n ', and when n '=1, the n-th ' disaggregation of common detector gather is that described common detector gather is remaining
The initial disaggregation of static correction value.
C22, using the n-th ' solution set pair common detector gather carry out the secondary residual static correction of t ', calculated using described equation 1
And compare the amplitude energy e in the superposition road of the common detector gather after the secondary residual static correction of t 't' quiet with -1 residue of t '
The amplitude energy e in the superposition road of the common detector gather after correctiont-1', wherein, e0' for first time residual static correction step it
The amplitude energy in the superposition road of front common detector gather, works as et′≤et-1' when, then concentrate the residue in each road quiet the n-th ' solution
Correcting value carries out random perturbation and is selected every one in common detector gather according to the probability branch mode of described ant group algorithm
Value of residual static correction after disturbance, forms the n-th '+1 disaggregation of common detector gather Value of residual static correction, and fresh information element, order
T '=t '+1, n '=n '+1 simultaneously returns execution step c21;Work as et' > et-1' when, then using the n-th ' disaggregation as common detector gather
The current optimal solution set of Value of residual static correction.
C23, determine whether to meet industry disturbance in geophone domain end condition: if being unsatisfactory for industry disturbance in geophone domain end condition, solve to the n-th '
Every Value of residual static correction together is concentrated to carry out random perturbation the disaggregation being constituted disturbance Hou Ge road Value of residual static correction
Directly as the n-th '+1 disaggregation of common detector gather Value of residual static correction, make t '=t '+1, n '=n '+1 simultaneously returns and executes step
Rapid c21;If meeting industry disturbance in geophone domain end condition, using the n-th ' disaggregation as the Value of residual static correction of common detector gather optimum
Disaggregation.
According to an embodiment based on the geological data residual static corrections of ant group algorithm for the present invention, described step
The industry disturbance in geophone domain end condition of c23 is: determines whether t ' reaches industry disturbance in geophone domain maximum iteration time and determine that the secondary residue of t ' is quiet
The amplitude energy e in the superposition road of the common detector gather data after correctiont' and -1 residual static correction step of t ' after
The amplitude energy e in the superposition road of common detector gather datat-1' difference whether reach minimum, work as et′-et-1' be not reaching to
Minimum and when t ' is not up to industry disturbance in geophone domain maximum iteration time, judge not meeting industry disturbance in geophone domain end condition;Work as et′-et-1' reach
To minimum or t ' reach industry disturbance in geophone domain maximum iteration time when, judge to meet industry disturbance in geophone domain end condition;Wherein, it is repeated several times
Described step c21 and c22 and cannot obtain and compare et′-et-1E is judged during ' less differencet′-et-1' reach minimum.
According to an embodiment based on the geological data residual static corrections of ant group algorithm for the present invention, described step b
With d ' inclusion: determine whether to reach default run time and determine the common-shot-gather data after the t time residual static correction
Superposition road amplitude energy etAmplitude with the superposition road of the common-shot-gather data after the t-1 time residual static correction step
Energy et-1Difference whether reach pre-established threshold, wherein, work as et-et-1More than pre-established threshold and not up to default run time
When, judge to be unsatisfactory for final end condition;Work as et-et-1Less than or equal to pre-established threshold or when reaching default run time,
Judge to meet final end condition.
According to an embodiment based on the geological data residual static corrections of ant group algorithm for the present invention, described step d
With b ' inclusion: determine whether to reach default run time and determine the common detector gather number after the secondary residual static correction of t '
According to superposition road amplitude energy et' and -1 residual static correction step of t ' after common detector gather data superposition road
Amplitude energy et-1' difference whether reach pre-established threshold, wherein, work as et′-et-1' more than pre-established threshold and not up to default
Run time when, judge be unsatisfactory for final end condition;Work as et′-et-1' be less than or equal to pre-established threshold or reach default
Run time when, judge meet final end condition.
According to an embodiment based on the geological data residual static corrections of ant group algorithm for the present invention, described process is moved
The Value of residual static correction of the geological data after correction and field statics is more than 1/2 cycle or the signal to noise ratio of seismic wave waveform
Low.Here, low signal-to-noise ratio is exactly the continuous reflection lineups that the geological data gathering does not compare, and is usually expressed as mixed and disorderly ripple
Shape.
Compared with prior art, the beneficial effect comprise that the present invention fully absorbs based on overall efficient self-adapted
The advantage of the ant group algorithm of optimizing, using the thinking carrying out Value of residual static correction non-linear inversion in big gun-inspection domain, by big gun-
Self-adaptive genetic operator of taking turns are carried out on the dynamic correction road collection in inspection domain calculate more, obtain optimum big gun-cautious Value of residual static correction, and
By determination strategy and the pheromone update strategy of adaptive adjustment searching route select probability, not only ensure that remaining quiet school
Just estimate the high imaging resolution to input low signal-to-noise ratio road collection, highlight the efficiency of residual static correction optimal value convergence again,
Form the geological data residual static corrections based on big gun-Jian Yu global optimum ant group algorithm, provide more for seismic data process
Fine and efficient residual static correction computational methods.
Specific embodiment
Hereinafter, accompanying drawing will be combined and exemplary embodiment describes in detail according to the present invention based on ant group algorithm
Geological data residual static corrections.
First, involved technical term in the simple elaboration present invention.
Common-shot-gather: same shot point excites, it is being total to of this shot point that all roads that different geophone stations receive form road collection
Shot point road collection.
Common detector gather (is also called common receiving point gather): different shot points excite, all roads that same geophone station receives
Form the common detector gather that road collection is this geophone station.
Residual static correction: because technical reason or some human factors are so that fieldwork data is often inadequate
Accurately, therefore after having carried out field statics still remaining Value of residual static correction.Extract Value of residual static correction the mistake being corrected for
Journey is residual static correction.
Ant group algorithm: be a kind of bionical quasi-nonlinear optimized algorithm, there is concurrency, positive feedback and global minimal search
The features such as ability is strong.The mechanism of ant group algorithm is: the ant in living nature when search of food source, on the path that can pass by it
Discharge a kind of ant distinctive secretion pheromones so that other ants a range of can be perceived and affect its row
For.When the ant passed by some paths gets more and more, this pheromones track staying is also more, so that pheromones intensity
Increasing (certainly, passage in time can gradually weaken), making ant later select the probability in this path also higher, thus more increasing
The pheromones intensity in this path.The biological synergetic mechanism component that ant colony is just located against this inside forms their things
Front and incognizant shortest path.
In search procedure, every human oasis exploited independently works ant group algorithm in the following way: from starting point,
Select next node according to certain probability transition rule, after all ants all complete the selection of next node, to all
Pheromones intensity on path is updated.
According to earth's surface condition for consistence, after dynamic correction, total static correction value all decomposable asymmetric choice net of any one road earthquake record
For shot point, geophone station, CMP and construction item, totally 4 sums, that is, meet equation below (1):
In equation (1), tabeIt is total static correction value, saFor the Value of residual static correction of a position shot point, rbFor the detection of b position
The Value of residual static correction of point, ceFor the Value of residual static correction of CMP e position, geophone offset habExamine for a position shot point to b position
The horizontal range of wave point, yeIt is construction item Value of residual static correction.
Select computation window that the impact of construction item can be tried one's best before carrying out residual static correction on section to eliminate.Due to ground
The non-double curve factor of layer and hyperbola formula move correction, casting out of its Taylor expansion higher order term, are just causing dynamic correction residue
Often the time difference increases with the increase of geophone offset, and in little geophone offset, residual NMO is very little, negligible.And, root
The CMP domain calculating Value of residual static correction can be converted into common big gun by the common big gun-cautious residual static corrections according to the present invention
Point domain and common receiver domain.After conversion, the assumed condition of Value of residual static correction and noise random distribution is easier to meet,
Preferable effect is achieved in low signal-to-noise ratio, the calculating of big Value of residual static correction data.Therefore, the application is by asking for each shot point
Value of residual static correction and the Value of residual static correction of each geophone station be obtained with total static correction value of any one road earthquake record
Therefore, according to the present invention, based on the premise that
1. assume ripple in weathering zone perpendicular to overland propagation, the i.e. residue of same shot point or same geophone station (receiving point)
Static correction value is identical.
2. the Value of residual static correction of certain recorded trace includes shot point Value of residual static correction and geophone station Value of residual static correction.
1. and 2. according to, in same common-shot-gather, the shot point Value of residual static correction in each road is identical, and geophone station remains
Remaining static correction value is different;And in same geophone station road collection, the shot point Value of residual static correction in each road is different, geophone station is remaining
Static correction value is identical.
Fig. 1 shows the geological data residual static corrections based on ant group algorithm according to an exemplary embodiment of the present invention
Flow chart.
As shown in figure 1, first by acquired original to single-shot data carry out field statics process and dynamic correction, wherein wild
Outer static correction and dynamic correction are the routine operations of this area, will not be described here, because dynamic correction is typically in concentrically road collection
Middle process, therefore, the geological data after dynamic correction is carried out road collection extraction process by the application first, after will moving correction
The gather of concentrically road collection be common-shot-gather or common detector gather.
According to the present invention it is possible to adopt two sets of flow processs, shown in the first operating process that is, in Fig. 1, left column is listed and right row
Second operating process, wherein, the first operating process is first to carry out calculating and then in the calculating of common receiver domain in common-source point domain, and the
Two operating processes are first to carry out calculating in common receiver domain and then calculate in common-source point domain, and the processing means of two flow processs are
Identical, difference is the sequencing of each step, therefore, in order to save length, below only to first shown in left column
Operating process is described in detail.
In a step 101, calculated in the common-shot-gather taking out road collection formation.Specifically, using ant group algorithm root
Obtain the optimal solution of the Value of residual static correction of common-shot-gather according to the initial disaggregation search of the Value of residual static correction of common-shot-gather
Collection.
Fig. 2 show according to an exemplary embodiment of the present invention in common-shot-gather utilize ant group algorithm according to common-source point
The flow chart that the initial disaggregation of the Value of residual static correction of road collection obtains the optimal solution set of Value of residual static correction of common-shot-gather.
In one embodiment, can be using the method shown in Fig. 2 in execution step 101.
As shown in Fig. 2 in step 301, the scope according to default Value of residual static correction is each of common-shot-gather
Road generates an initial residual static correction value at random, forms initial disaggregation (i.e. n-th solution of common-shot-gather Value of residual static correction
Collection, n=1).
In step 302, the n-th solution m ant being respectively placed in common-shot-gather Value of residual static correction is concentrated and is corresponded to
On the node that road Value of residual static correction is located, m is equal to total road number of common-shot-gather, and the loop iteration number of times in setting big gun domain is
T=1, starts the t time loop iteration (abbreviation iteration) in common-shot-gather, the wherein initial value of t is 1.
In step 303, quiet by applying the n-th solution set pair common-shot-gather to carry out the t time residue in common-shot-gather
Correction.
In step 304, calculate the common-shot-gather after the t time residual static correction according to equation below (2)
Superposition road (i.e. model trace) amplitude energy etAmplitude energy with the superposition road of the common-shot-gather before the t time residual correction
Amount et-1.It should be appreciated that as t=1, the amplitude energy e in the superposition road of the common-shot-gather after the t-1 time residual correction0For
Do not apply the original common-shot-gather that the initial disaggregation of common-shot-gather is carried out before residual static correction to pass through the superposition of big gun domain to obtain
Superposition road amplitude energy.
In equation (2), m is total road number of common-shot-gather, and t is total number of samples of seismic channel,The the one t time remaining quiet
The amplitude energy of k-th sampling point in jth road of the common-shot-gather after correction.
In step 305, determine the amplitude energy e in the superposition road of common-shot-gather after the t time residual static correctiontIt is
The amplitude energy e in the no superposition road being more than the common-shot-gather after the t-1 time residual static correctiont-1.
When determining e in step 305t> et-1When, then it is believed that the Value of residual static correction of this common-shot-gather is to optimum
Direction convergence, the Value of residual static correction that at this moment big gun collection can be unconditionally accepted as current optimal residual static correction value, that is, in step
In rapid 306 using the n-th disaggregation as common-shot-gather Value of residual static correction current optimal solution set.
In step 307, judge whether to meet sufficient big gun domain end condition, big gun domain end condition could be arranged to: determine this
Whether secondary iterations t reaches default big gun domain maximum iteration time and whether finds least residual, if find least residual
Determine the amplitude energy e in the superposition road of common-shot-gather data after the t time residual static correctiontRemaining with the t-1 time quiet
The amplitude energy e in the superposition road of the common-shot-gather data after aligning stept-1Difference whether reach minimum.
When determining e in step 307t-et-1When being not reaching to minimum and t and being not up to big gun domain maximum iteration time, that is, less than
During sufficient big gun domain end condition, turn to step 308.
When determining e in step 307t-et-1Reach minimum or when t reaches big gun domain maximum iteration time, then solve n-th
Collection is as the optimal solution set of the Value of residual static correction of common-shot-gather;Wherein, described step 302 is repeated several times to 307 and cannot
E is compared in acquisitiont-et-1E is judged during less differencet-et-1Reach minimum.Here, the number of times of repetition can be carried out according to actual conditions
Select, for example, 10~100 times.
In step 308, current one group optimum Value of residual static correction (i.e. current optimal solution set) is disturbed at random
Dynamic, i.e. one random disturbance quantity of plus/minus on the basis of the n-th solution set Zhong Ge road Value of residual static correction currency, and by disturbance
The disaggregation that Hou Ge road Value of residual static correction is constituted is directly as the (n+1)th disaggregation, defeated as the calculating of loop iteration next time
Enter Value of residual static correction.Meanwhile, make t=t+1, n=n+1 simultaneously returns execution step 302.It should be appreciated that first time loop iteration
The input Value of residual static correction calculating is the Value of residual static correction that common-shot-gather initial solution is concentrated.
When determining e in step 305t≤et-1When, judge that now Value of residual static correction is not to convergence direction approximation, though
So now Value of residual static correction is not to convergence direction approximation, but due to it is considered that the convergence of this Value of residual static correction is not one
Individual linear trend, but one is nonlinear, has a lot of local minimums, thus can be received (i.e. following by probability
Equation (3)) mode allow it to jump in another convergent tendency locally or globally.Specifically, the n-th solution is concentrated often
Value of residual static correction together carries out random perturbation and selects common detector gather according to the probability branch mode of ant group algorithm
In Value of residual static correction after every one disturbance, form the (n+1)th disaggregation.
As shown in Fig. 2 in the step 310, the Value of residual static correction in each road is concentrated to carry out random perturbation the n-th solution, that is,
One random disturbance quantity of plus/minus on the basis of the n-th solution set Zhong Ge road Value of residual static correction currency.
In step 311, calculate ant k using equation (3) to concentrate corresponding to the Value of residual static correction in kth road from the n-th solution
Node i transfer to the n-th solution and concentrate corresponding to the Value of residual static correction that obtains after random perturbation of Value of residual static correction in kth road
Node j acceptance probability pij kT (), wherein, k gets m from 1.
In equation (3), τijT () represents that all ants are retained in i-node to j node path in the t time iteration
Pheromones amount, τisT () represents that all ants are retained in the pheromones amount to s node path for the i-node in the t time iteration, i saves
Point represents other all optional paths, η in addition to i-node to j node path to s node pathijT () is heuristic function, be i section
Point arrives the inverse of j node Euclidean distance, ηisT () is the inverse to s node Euclidean distance for the i-node, α represents transfer rail
The importance of mark, β represents the relative importance of visibility.
In step 312, judgeWhether it is more than default acceptance probability pacp, with judge whether to accept ant k from
I-th node transfers to jth node.
When judging in step 312When, then accept in a step 314 to concentrate kth road remaining n-th solution
The Value of residual static correction that static correction value obtains after disturbance concentrates kth as the (n+1)th solution of common-shot-gather Value of residual static correction
The Value of residual static correction in road, completes the process that the n-th solution concentrates kth road.
WhenWhen, then refuse to concentrate the residue that kth road Value of residual static correction obtains after disturbance quiet n-th solution
Correcting value solves, as (n+1)th, the Value of residual static correction concentrating kth road, and concentrates undone process to the n-th solution in step 313
The Value of residual static correction in kth road carries out disturbance again, and return to step 311, repeat the above steps, until
In step 315, judge whether all roads that the n-th solution is concentrated are completed renewal and process, that is, judge whether own
Ant all completes the selection of next node, if certain one or multi-channel do not complete, return to step 313;If sentencing in step 315
Ding Ge road has all completed renewal and has processed, then form the (n+1)th disaggregation in step 316, and fresh information element, then makes t=t+1, n
=n+1 simultaneously returns execution step 302.In this embodiment, it is preferred that, adopt to complete pheromones according to equation below (4)
Update.
τij(t+1)=(1- ζ) τij(t)+δτij(t) (4)
In equation (4),ζ is pheromones attenuation coefficient, ζ=ρt, and
And ρ is 0~1 constant, t is iterations.
Certainly the invention is not restricted to this, pheromones attenuation coefficient can also be using conventional constant coefficient decay.But, at this
In embodiment, pheromones attenuation coefficient is optimized, exponential function decay is changed to by conventional constant coefficient decay, improves
The optimizing ability of this algorithm.
In the step 102 of Fig. 1, the optimum of the Value of residual static correction of the common-shot-gather being obtained using the step 309 of Fig. 2
Solution set pair common-shot-gather carries out residual static correction.
In step 103, judge whether to meet final end condition.It should be noted that the requirement of final end condition
Stricter than big gun domain end condition and industry disturbance in geophone domain end condition, can by determine whether to reach default run time and
Determine the amplitude energy e in the superposition road of common-shot-gather data after the t time residual static correctiontQuiet school remaining with the t-1 time
The amplitude energy e in the superposition road of the common-shot-gather data after positive stept-1Difference whether reach pre-established threshold.
When e is worked as in judgement in step 103t-et-1Less than or equal to pre-established threshold or when reaching default run time,
Terminate computing (end).
When judging e in step 103t-et-1More than pre-established threshold and not up to default run time when, then execute step
Rapid 104.
At step 104, the common detector gather carrying out next attribute group calculates, will be after step 102 is processed
Common-shot-gather is converted to common detector gather, and first according to the Value of residual static correction of common detector gather using ant group algorithm
Beginning disaggregation calculates the optimal solution set of the Value of residual static correction of common detector gather.
Fig. 3 shows and according to an exemplary embodiment of the present invention utilizes ant group algorithm in common detector gather according to altogether inspection
The initial disaggregation of the Value of residual static correction of wave point road collection obtains the stream of the optimal solution set of Value of residual static correction of common detector gather
Cheng Tu.
In one embodiment, can be using the method shown in Fig. 3 in execution step 104.
From the figure 3, it may be seen that utilizing ant group algorithm in common detector gather according to the Value of residual static correction of common detector gather
Initial disaggregation obtain the optimal solution set of Value of residual static correction of common-shot-gather and utilize ant group algorithm in common-shot-gather
The initial disaggregation of the Value of residual static correction according to common-shot-gather obtains the optimal solution set of the Value of residual static correction of common-shot-gather
Mode of operation the same, difference is that the two is the place that carries out in common detector gather and in common-shot-gather respectively
Reason.Thus, it is briefly described below in conjunction with Fig. 3 and utilize ant group algorithm surplus according to common detector gather in common detector gather
The initial disaggregation of remaining static correction value obtains the flow process of the optimal solution set of Value of residual static correction of common-shot-gather.
As shown in figure 3, in step 401, the scope according to default Value of residual static correction is every in common detector gather
Generate together at random an initial residual static correction value, formed common detector gather initial disaggregation (i.e. the n-th ' disaggregation, n '=
1).
In step 402, the n-th ' solution m ' ant being respectively placed in common detector gather concentrates corresponding road residue quiet
On the node that correcting value is located, m ' is equal to total road number of common detector gather, and the loop iteration number of times in setting industry disturbance in geophone domain is
T '=1, starts the secondary loop iteration of t ' in common detector gather, the wherein initial value of t ' is 1.
In step 403, pass through to apply the initial disaggregation of described common detector gather in common detector gather, that is, utilize
The n-th ' disaggregation (n '=1) carries out the secondary residual static correction of t ' to common detector gather.
In step 404, the common detector gather after the secondary residual static correction of t ' is superimposed acquisition one by industry disturbance in geophone domain
Individual superposition road (i.e. model trace), the amplitude energy in this superposition road is et′;Correspondingly, the common inspection after -1 residual correction of t '
The amplitude energy e in the superposition road of wave point road collectiont-1′;It should be appreciated that the common receiver when t '=1, after the 0th residual correction
The amplitude energy e in the superposition road of road collection0' former before residual static correction for not applying the initial disaggregation of common detector gather to carry out
The amplitude energy in the superposition road that beginning common detector gather is obtained by industry disturbance in geophone domain superposition.
In step 405, determine the amplitude energy in the superposition road of common detector gather after the secondary residual static correction of t '
etWhether it is more than the amplitude energy e in the superposition road of common detector gather after -1 residual static correction of t 't-1.
When determining e in step 405t' > et-1' when, then it is believed that the Value of residual static correction of this common detector gather to
Optimum direction convergence, the Value of residual static correction that can unconditionally accept detection point set at this moment is as current optimal residual static correction
Amount, that is, in a step 406 using the n-th ' disaggregation as current optimal solution set.
In step 407, judge whether to meet sufficient industry disturbance in geophone domain end condition, industry disturbance in geophone domain end condition can be arranged
For: determine whether the current iteration number of times t ' of common detector gather reaches default industry disturbance in geophone domain maximum iteration time and whether look for
To least residual, if find the superposition that least residual determines the common detector gather data after the secondary residual static correction of t '
The amplitude energy e in roadt' and -1 residual static correction step of t ' after common detector gather data superposition road amplitude energy
Amount et-1' difference whether reach minimum.
When determining e in step 407t′-et-1' it is not reaching to minimum and t ' not up to industry disturbance in geophone domain maximum iteration time
When, that is, when not meeting big gun domain end condition, turn to step 308.
When determining e in step 407t′-et-1' reach minimum or when t reaches industry disturbance in geophone domain maximum iteration time, then will
The n-th ' disaggregation is as the optimal solution set of the Value of residual static correction of common detector gather.Wherein, be repeated several times described step 402 to
407 and cannot obtain and compare et′-et-1E is judged during ' less differencet′-et-1' reach minimum.Here, the number of times of repetition can root
Selected according to actual conditions, for example, 10~100 times.
In a step 408, (the i.e. current optimal solution of the Value of residual static correction to current one group optimum common detector gather
Collection) carry out random perturbation, that is, on the basis of the n-th ' solution set Zhong Ge road Value of residual static correction currency of common detector gather
One random disturbance quantity of plus/minus, and the disaggregation that disturbance Hou Ge road Value of residual static correction is constituted is directly as the n-th '+1 solution
Collection, the input Value of residual static correction calculating as loop iteration next time.Meanwhile, make t '=t '+1, n '=n '+1 returning holds
Row step 402.It should be appreciated that the input Value of residual static correction that first time loop iteration calculates is common detector gather initial solution
The Value of residual static correction concentrated.
When determining e in step 405t′≤et-1' when, concentrate the residue in each road quiet the n-th ' solution of common detector gather
Correcting value carries out random perturbation and selects every one disturbance in common detector gather according to the probability branch mode of ant group algorithm
Value of residual static correction afterwards, forms the n-th '+1 disaggregation.
As shown in figure 3, in step 410, the Value of residual static correction concentrating each road is solved to the n-th ' of common detector gather
Carry out random perturbation, i.e. plus/minus on the basis of the n-th solution set Zhong Ge road Value of residual static correction currency of common detector gather
One random disturbance quantity.
In step 411, calculate ant k ' from the n-th ' of common detector gather Value of residual static correction using above equation (3)
Solution concentrates the node i ' corresponding to Value of residual static correction in kth ' road to transfer to the n-th ' of common detector gather Value of residual static correction
The acceptance of the node j ' corresponding to Value of residual static correction that the Value of residual static correction in solution concentration kth ' road obtains after random perturbation
ProbabilityWherein, k ' gets m ' from 1.
In step 412, judgeWhether it is more than default acceptance probability pacp', to judge whether to accept ant k '
Transfer to jth ' node from the i-th ' node.
When judging in step 412When, then accepting in step 414 will be quiet for common detector gather residue
The Value of residual static correction that the n-th ' solution concentration kth ' road Value of residual static correction of correcting value obtains after disturbance is as common receiver road
The n-th '+1 solution of collection Value of residual static correction concentrates the Value of residual static correction in kth ' road, completes the process that the n-th ' solution concentrates kth ' road.
WhenWhen, then refuse for the n-th ' solution of common detector gather to concentrate kth ' road Value of residual static correction warp
The Value of residual static correction obtaining after disturbance solves, as the n-th '+1 of common detector gather, the Value of residual static correction concentrating kth ' road, and
The Value of residual static correction not completing the kth ' road processing is concentrated to carry out weight the n-th ' solution of common detector gather in step 413
New disturbance, and return to step 411, until
In step 415, judge whether all roads that the n-th ' solution of common detector gather is concentrated are completed renewal and process,
Judge whether that all ants all complete the selection of next node, if certain one or multi-channel do not complete, return to step 413;
If judging in step 415, each road has all completed renewal and has processed, and forms the n-th '+1 solution of common detector gather in step 416
Collection, and then fresh information element makes t '=t '+1, n '=n '+1 simultaneously returns execution step 402..In this embodiment, it is preferred that,
Adopt the renewal to complete pheromones according to above equation (4), wherein, in this step, the t in equation (4) is industry disturbance in geophone domain
Interior iterations t '.
In step 105, the optimal solution set of the Value of residual static correction of the common detector gather being obtained using step 409 is to altogether
Geophone station road collection carries out residual static correction.
In step 106, judge whether to meet final end condition.When e is worked as in judgement in step 106t′-et-1' be less than
Or when being equal to pre-established threshold or reaching default run time, terminate computing (end);When judging e in step 106t′-
et-1' more than pre-established threshold and not up to default run time when, then return execution step 101, adjustment Value of residual static correction
Preset range and regenerate common-shot-gather Value of residual static correction initial disaggregation, restart calculate.
In addition, it is necessary to explanation, above only single-shot geological data is processed, but the invention is not restricted to this, right
In many big guns geological data, its processing mode is the same, can using said method, many big guns geological data be processed simultaneously.
Above-mentioned example embodiment for a better understanding of the present invention, is carried out to it with reference to specific example further
Explanation.
Example:
(1) the common-shot-gather geological data of the Value of residual static correction to be calculated after dynamic correction, this common-shot-gather are inputted
Geological data Zhong You 500 road.
(2) (big gun domain residual static correction calculating) initialization: set the iterations t=1 in big gun domain, (m is ant sum for m
For solving the road number in the common-shot-gather of Value of residual static correction, i.e. m=500)
(3) (big gun domain residual static correction calculating) assumes the initial residual static correction value difference in each road of this common-shot-gather
For:I.e. initial disaggregation is By m ant
It is respectively placed in (solution of the n as solution space of solution residual static correction, example on n static correction value node by certain initial rules
Then have 61 values as between -60ms~+60ms at interval of for 2ms value, be respectively as follows: -60ms, -58ms, -
56ms ..., -2ms, 0ms, 2ms ..., 56ms, 58ms, 60ms), the node that these place ants is randomly generated.
Due to m (m=500) the > n (n=61) enumerating in this example, thus, the initial residual static correction value that there are some roads is located
Value node is identical, for example,It is -2ms, if the node number of -2ms is i, the 1st ant, the 5th ant
Ant and the 30th ant are both placed in node i.
(4) carry out ant group algorithm search, application message element more new regulation changes pheromones value.In construction solution, ant n walks
The every paths crossed are adjusted and are tried to achieve by equation (1) and (2), specifically:
First, apply initial residual static correction value, that is, utilize the initial solution set pair of common-shot-gather Value of residual static correction former
Beginning common-shot-gather carries out first time residual static correction, then the common-shot-gather after first time residual static correction is folded
Plus obtain the amplitude energy e of superposition road (i.e. model trace)1, with the amplitude energy being superimposed before application initial residual static correction value
Amount e0It is compared:
Wherein, m is the road number of every big gun, and t is the number of samples of seismic channel,It is the jth of initial disaggregation
K-th sample value in road.
Wherein, m is the road number of every big gun, and t is the number of samples of seismic channel,It is that first round residual is quiet
K-th sample value in this Baoj road after correcting value renewal.
If e1>e0, accept current residual static correction value as current optimal value, carry out Value of residual static correction random perturbation,
Wherein, initial solution is concentrated the residual static correction value that every one Value of residual static correction obtain after random perturbation directly to form the
N+1 disaggregation, the initial value of n is 1.
If e1≤e0, carry out the Value of residual static correction random perturbation by road, and according to the probability branch mode of ant group algorithm Lai
Select the Value of residual static correction after every one disturbance in common detector gather, form the (n+1)th disaggregation.
For example, as n=1, the (n+1)th disaggregation is
Wherein, initial solution is concentrated every Value of residual static correction together carry out obtaining after first time random perturbation:
In equation (5), δ v is random disturbance quantity, for example, be taken as 5ms in this example, For coefficient of disturbance, for example in this exampleIt is taken as the arbitrary value in -2~2.
Calculate every transition probability together successively, for example, initial solution concentrates first Value of residual static correctionPlace node
For i,The Value of residual static correction obtaining after first time random perturbation isAndPlace node is j, then according to equation
(3) calculate the first track data Value of residual static correction fromDisturbance is arrivedAcceptance probability (transition probability), that is, calculate first
Ant is from i-node disturbance to the transition probability of j node
Then pass throughTo determine whether to accept the Value of residual static correction in current seismic road
Value is updated to the Value of residual static correction after disturbance, for example,When, accept the first track data Value of residual static correction fromDisturbance is arrivedInitial solution will concentrate firstIt is updated toOtherwise refusal updates, and again to first
Value of residual static correction carries out disturbance, makes until searching suitable disturbance quantity
After completing the disturbance of Value of residual static correction of all seismic channels of this common-shot-gather and selecting, that is, m ant is equal
After finding next node, the Value of residual static correction after the disturbance of each road forms the (n+1)th disaggregation, enters row information using equation (4)
Plain intensity updates, and makes t=t+1, n=n+1, carries out the amplitude energy being superimposed road before and after the Value of residual static correction application of next round
Amount contrast.
(5) if m ant all adjusts and complete after t wheel, and min (e)=et-et-1, that is, after the t time residual static correction
Common-shot-gather data superposition road amplitude energy etWith the common-shot-gather number after the t-1 time residual static correction step
According to superposition road amplitude energy et-1Residual error reach minimum, and repeatedly revise and still cannot obtain more Small object value min (e),
Or t reaches maximum cycle, then the n-th disaggregation as the optimal solution set of common-shot-gather Value of residual static correction and is applied to
Data in common-shot-gather is carried out go to step (6) after residual static correction, otherwise return execution step (4).
(6) if final end condition meets, terminate;Otherwise, go to step the common receiver road that (2) carry out next attribute group
Collection calculates, and will select through the geological data after the optimal solution set of common-shot-gather Value of residual static correction carries out residual static correction
Arrange as common detector gather, and carry out in industry disturbance in geophone domain common detector gather Value of residual static correction the search of optimal solution set and
And complete residual static correction.Wherein, final end condition can set the length lower limit of shortest path, such as min (e) < 10-5Then tie
Bundle, also can limit run time, for example, run time time > 1000000 seconds then terminate calculating.
In sum, the invention provides a kind of big gun altogether-cautious residual static corrections, Value of residual static correction will be calculated
CMP domain is converted into common-source point domain and common receiver domain.After conversion, Value of residual static correction and noise random distribution
Assumed condition is easier to meet, and achieves preferable effect in low signal-to-noise ratio, the calculating of big Value of residual static correction data.Have
The features such as calculation procedure simplicity, computational efficiency height and high treating effect.
Although above by describing the present invention with reference to exemplary embodiment, those skilled in the art should be clear
Chu, in the case of the spirit and scope being limited without departing from claim, can be carried out respectively to the exemplary embodiment of the present invention
Plant modifications and changes.