CN104570060B - It is a kind of to offset the cautious method and device of big gun - Google Patents
It is a kind of to offset the cautious method and device of big gun Download PDFInfo
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- CN104570060B CN104570060B CN201410830920.6A CN201410830920A CN104570060B CN 104570060 B CN104570060 B CN 104570060B CN 201410830920 A CN201410830920 A CN 201410830920A CN 104570060 B CN104570060 B CN 104570060B
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Abstract
The embodiment of the present application discloses a kind of cautious method and device of skew big gun, the method include according to big gun on every survey line it is cautious how much several the big gun of nearlyer lateral edges examines in barrier both sides of the edge in the length and this bar survey line of barrier both sides of the edge distance, the cautious offset direction of big gun on every survey line is judged successively；According to the offset direction for judging, big gun on every survey line is examined into line displacement successively；Whether after the cautious completion skew of big gun on all surveys line, judging that the big gun on every survey line is cautious successively needs to carry out smooth treatment；Big gun on survey line is judged is cautious need to carry out smooth treatment after, to needing to carry out, the big gun on the survey line of smooth treatment is cautious carries out smooth treatment successively.The device includes determining whether unit, offset units, smooth treatment judging unit and smooth treatment unit.The purpose of seismic wave field continuous sampling can be realized by the cautious method and device of the skew big gun in the application.
Description
Technical field
The application is related to technical field of geophysical exploration, more particularly to a kind of to offset the cautious method and device of big gun.
Background technology
As economic continues to develop, country also increases increasingly to the demand of petroleum resources, seismic prospecting be faced with to
The present situation of the complicated earth surface region such as mountain area propulsion.Especially western China, substantial amounts of Mesozoic and Cenozoic basin is
Foreland basin, contains the petroleum resources of very abundant.Therefore, in complicated earth surface region, development seismic exploration is significant.
However, carrying out exploration construction in complicated earth surface region, because earth's surface is with a varied topography, barrier region cannot lay big gun
It is cautious, it will to cause the degree of covering to reduce, shallow-layer data missing.Shallow-layer data is ensured, it is necessary to obstacle to improve degree of covering
The big gun that cannot be normally laid in thing area is examined into line displacement.At present, in the prior art according to the most short principle of offset distance, will be all
Big gun is examined and offset to most short side with a distance from barrier region, and this offset method causes CMP (Common Middle-
Point) geophone offset is distributed with jumping characteristic, can not be continuous so as to cause seismic wave field to be sampled.However, in seismic data denoising and partially
Move into as etc. require that geological data has wave field continuity in various processing procedures.
It is therefore desirable to have a kind of cautious method of big gun in new offset barrier region, to ensure that seismic wave field can be continuous
Sampling.
The content of the invention
The purpose of the embodiment of the present application is to provide a kind of cautious method and device of skew big gun, to realize that seismic wave field is continuous
The purpose of sampling.
In order to solve the above technical problems, the embodiment of the present application is achieved through the following technical solutions：
The embodiment of the present application provides a kind of cautious method of skew big gun, and the method includes：
S1, examines in the length and this bar survey line of barrier both sides of the edge distance away from obstacle according to big gun on every survey line
How much several the big gun of nearlyer lateral edges examines in thing both sides of the edge, and the cautious offset direction of big gun on every survey line is judged successively；
S2, according to the offset direction for judging, examines into line displacement to big gun on every survey line successively；
S3, big gun is cautious on all surveys line complete skew after, judge successively the big gun on every survey line it is cautious whether need into
Row smooth treatment；
S4, the big gun on survey line is judged is examined after needing to carry out smooth treatment, successively to needing to carry out smooth treatment
Big gun on survey line is examined and carries out smooth treatment.
Preferably, it is described according to the cautious length and this bar survey line away from barrier both sides of the edge distance of big gun on every survey line
On in barrier both sides of the edge the big gun of nearlyer lateral edges how much several examine, cautious inclined of big gun on every survey line is judged successively
Moving direction includes：
(1) examined in the length and current survey line of the lateral extent of barrier two away from barrier two according to big gun on current survey line
How much several the big gun of nearlyer lateral edges examines in lateral edges, and pointwise judges that the big gun that is fallen into barrier on current survey line is cautious
Offset direction；
Accordingly, described according to the offset direction for judging, big gun on every survey line is examined includes successively into line displacement：
(2) according to the offset direction for judging, pointwise is examined into line displacement to the big gun fallen into barrier on current survey line；
(3) on the current survey line the big gun for being offset in need is cautious offset out barrier after, cross obstacle by next
The survey line of thing repeats above step (1)-(2) as current survey line, and barrier is offset out until all big guns are cautious on all surveys line
Hinder thing.
Preferably, it is described according to big gun on current survey line it is cautious in the length and current survey line of the lateral extent of barrier two away from
How much several the big gun of nearlyer lateral edges examines in barrier both sides of the edge, and pointwise judges to be fallen into barrier on current survey line
The cautious offset direction of big gun includes：
The continuous all big guns for crossing barrier are examined and is classified as one section, calculate all big guns in this section cautious away from the side of barrier two
The distance of edge；
According to this section of upper cautious distance away from barrier both sides of the edge of all big guns, by comparing from barrier first side edge
The big gun of relative close examines number and the big gun from barrier second side edge relative close examine it is several number judge institute in this section
There is the cautious offset direction of big gun.
Preferably, it is described that number is examined and from barrier second by the big gun compared from barrier first side edge relative close
The big gun of lateral edges relative close examine it is several number judge that this section of cautious offset direction of upper all big guns includes：
It is more than from barrier second side edge phase judging that the big gun from barrier first side edge relative close examines to count
During number cautious to nearer big gun, judge that all big guns are examined to the skew of the side of barrier first in this section.
Preferably, it is described by judging that the big gun from barrier first side edge relative close examines number and from barrier second
The big gun of lateral edges relative close examine it is several number judge that this section of cautious offset direction of upper all big guns includes：
It is equal to from barrier second side edge phase judging that the big gun from barrier first side edge relative close examines to count
It is during number cautious to nearer big gun, the cautious distance away from barrier first side edge of big gun and big gun is cautious away from barrier second side edge
Distance contrasted；
It is determined that the cautious distance away from barrier first side edge of big gun it is cautious less than big gun away from barrier second side edge away from
From when, judge in this section that all big guns are examined and offset to the side of barrier first.
Preferably, it is described according to judge offset direction, pointwise the big gun fallen into barrier on current survey line is examined into
Line displacement includes：
Have that other big guns are cautious to be present on the position that will be offset when forward gun is cautious, described other big guns are cautious also according to working as forward gun
Line displacement is entered in cautious offset direction,
Or,
When distance of the position that will be offset when forward gun is cautious away from adjacent survey line is less than default perpendicular offset of shot line, it is described will be inclined
Big gun on the position of shifting is examined also according to when line displacement is entered in the offset direction that forward gun is examined.
Preferably, whether the big gun judged successively on every survey line is cautious needs to carry out smooth treatment to include：
(1) whether pointwise judges that big gun on current survey line is cautious needs to carry out smooth treatment；
Accordingly, after the big gun on survey line is judged is examined and needs to carry out smooth treatment, successively on every survey line
Big gun cautious carry out smooth treatment and include：
(2) after the big gun on current survey line is judged is examined and needs to carry out smooth treatment, pointwise is to the big gun on current survey line
It is cautious to carry out smooth treatment；
(3) after the cautious completion smooth treatment of all big guns on current survey line, next survey line as current survey line is repeated
Above step (1)-(2) are performed, smooth treatment is completed until all big guns are cautious on all surveys line.
Preferably, whether the pointwise judges that big gun on current survey line is cautious needs to carry out smooth treatment to include：
1. the cautious azimuth and survey line orientation with next big gun between cautious of the fooled forward gun of the current survey line after skew is calculated
The difference at angle；
2. will work as difference between the cautious azimuth and survey line azimuth with next big gun between cautious of forward gun with it is default
Smoothing angle is contrasted, and judges whether to need to carrying out smooth treatment when forward gun is cautious；
Accordingly, after the big gun on current survey line is judged is examined and needs to carry out smooth treatment, pointwise is to current survey
Big gun on line is cautious to carry out smooth treatment includes：
3. judging when the difference between the cautious azimuth and survey line azimuth with next big gun between cautious of forward gun is big
In after default Smoothing angle, line displacement is entered in the offset direction to judging in forward gun is cautious according to step S1；
4. the upper big gun for being examined after line displacement when forward gun, judging to examine when forward gun it is cautious whether need to carry out it is smooth
Treatment；Repeat step 1. -3., complete smooth treatment until all big guns are cautious on current survey line.
Preferably, whether the big gun judged successively on every survey line is cautious needs to carry out smooth treatment to include：
Order according to survey line numbering from big to small or according to survey line position from left to right, judges on every survey line successively
Whether big gun is cautious needs to carry out positive smooth treatment,
Or,
Order according to survey line numbering from small to large or according to survey line position from right to left, judges on every survey line successively
Whether big gun is cautious needs to carry out reverse smooth treatment；
Accordingly, after the big gun on survey line is judged is examined and needs to carry out smooth treatment, successively to needing to carry out light
Big gun on the survey line of sliding treatment is cautious to carry out smooth treatment includes：
Big gun on survey line is judged is examined after needing to carry out smooth treatment, according to survey line numbering from big to small or according to survey
Line position order from left to right, to needing to carry out, the big gun on the survey line of smooth treatment is cautious carries out positive smooth treatment successively,
Or
Big gun on survey line is judged is examined after needing to carry out smooth treatment, according to survey line numbering from small to large or according to survey
Line position order from right to left, to needing to carry out, the big gun on the survey line of smooth treatment is cautious carries out reverse smooth treatment successively.
Preferably, successively to need to carry out the big gun on the survey line of smooth treatment is cautious carry out positive smooth treatment after, then
Order according to survey line numbering from small to large or according to survey line position from right to left, after judging to carry out positive smooth treatment successively
Whether the big gun on every survey line is examined needs to carry out reverse smooth treatment；
After the cautious needs of big gun on every survey line after judging to carry out positive smooth treatment carry out reverse smooth treatment,
Order according to survey line numbering from small to large or according to survey line position from right to left, successively to every survey after positive smooth treatment
Big gun on line is examined and carries out reverse smooth treatment,
Or,
Successively to need to carry out the big gun of smooth treatment is cautious carry out reverse smooth treatment after, according still further to survey line numbering from greatly to
Order small or according to survey line position from left to right, judges that the big gun carried out on every survey line after reverse smooth treatment is examined successively
Whether need to carry out positive smooth treatment；
After the cautious needs of big gun on every survey line after judging to carry out reverse smooth treatment carry out positive smooth treatment,
Order according to survey line numbering from big to small or according to survey line position from left to right, successively to every survey after reverse smooth treatment
Big gun on line is examined and carries out positive smooth treatment.
The embodiment of the present application additionally provides a kind of cautious device of skew big gun, and the device includes：
Identifying unit, the identifying unit is used for according to the cautious length away from barrier both sides of the edge distance of big gun on every survey line
How much several the big gun of nearlyer lateral edges examines in barrier both sides of the edge on short and this bar survey line, and every survey is judged successively
The cautious offset direction of big gun on line；
Offset units, the offset units be used for according to judge offset direction, big gun on every survey line is examined successively into
Line displacement；
Smooth treatment judging unit, after the judging unit is used for the cautious completion skew of the big gun on all surveys line, sentences successively
Whether the big gun on every survey line that breaks is cautious needs to carry out smooth treatment；
Smooth treatment unit, the big gun that the smooth treatment unit is used on survey line is judged is examined to be needed to carry out smooth place
After reason, to needing to carry out, the big gun on the survey line of smooth treatment is cautious carries out smooth treatment successively.
Compared with prior art, the application has the advantages that：
The application is by examining the length away from the lateral extent of barrier two and the big gun that can be offset to barrier both sides according to big gun
How much offset directions cautious to judge big gun of cautious number, then big gun is cautious enters line displacement according to the offset direction for determining, and right
Whether the big gun after skew is examined needs smooth treatment to be judged and processed, and this realizes the mesh of seismic wave field continuous sampling
's.
Brief description of the drawings
In order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet that the cautious method of big gun is offset in the embodiment of the application one.
Fig. 2 is that big gun is cautious and distribution map of barrier in a certain work area.
Fig. 3 is to examine the result schematic diagram for carrying out migration processing to the big gun shown in Fig. 2.
Fig. 4 is that big gun is cautious and distribution map of barrier in a certain work area.
Fig. 5 is to examine the result schematic diagram for carrying out migration processing to the big gun shown in Fig. 4.
Fig. 6 is to examine the result schematic diagram for carrying out smooth treatment to the big gun shown in Fig. 5.
Fig. 7 is the structural representation of the cautious device of skew big gun in the embodiment of the application one.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, below in conjunction with the application reality
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
Implementing for technical scheme is illustrated with reference to specific embodiment.
Embodiment
Fig. 1 is the schematic flow sheet of the cautious method of skew big gun in the embodiment of the application one.The method comprises the following steps：
Step S101, it is cautious in the length and this bar survey line of barrier both sides of the edge distance according to big gun on every survey line
How much several the big gun of nearlyer lateral edges examines in barrier both sides of the edge, and the cautious skew of big gun on every survey line is judged successively
Direction.
The seismic exploration data of survey region is obtained, then big gun is examined in grid in the seismic exploration data according to acquired in
Which survey line the region that coordinate and barrier on data surface are covered, judgement has on and there are which big gun is cautious to fall into obstacle
In thing.The survey line of barrier can first be judged, then judge to be fallen into barrier on each survey line in these surveys line
Big gun cautious quantity and its numbering；The big gun fallen into barrier cautious quantity and its numbering can also first be judged, then judged
Go out these big guns and examine affiliated survey line.
In the present embodiment, the survey line of barrier was first determined whether out, then judged there is which big gun is examined on each survey line
Fall into barrier.For on every survey line, the discontinuous single big gun fallen into barrier is examined, and calculates the cautious skew of each big gun
Go out the distance of barrier both sides of the edge, i.e. offset distance.According to the offset distance size that big gun is examined, each big gun is examined to from obstacle
That side skew of thing relative close.
Examined for there is the big gun for continuously falling into barrier on survey line, these big guns for continuously falling into barrier are examined
One section is classified as, by-line judges the cautious offset direction of these big guns paragraph by paragraph.Specifically judge the method for the cautious offset direction of these big guns such as
Under：
(1) according to default skew rule, can judge that the big gun that a section is classified as on current survey line is cautious one by one be displaced to barrier
Hinder beyond the region of objective existence.Specifically, first calculating the cautious offset distance of these big guns, that is, offset out the beeline of barrier both sides of the edge；So
The offset distance that each big gun is examined is compared with default ultimate range afterwards.If the cautious offset distance of a certain big gun is less than
Default ultimate range, then then thinking that the big gun is cautious can offset, otherwise then thinking that the big gun is cautious can not offset, and will can typically be somebody's turn to do
Big gun is cautious to be considered as null point.
(2) after all big guns on judging same section are examined and can enter line displacement, according to close to barrier both sides of the edge
The cautious quantity of big gun is offset to the which side of barrier judging that these big guns are examined.If from barrier first side edge
The cautious quantity of near big gun will be more than the quantity that the big gun close to barrier second side edge is examined, then all big guns inspection on this section
Point just offsets to the first side of barrier；If the quantity that the big gun close to barrier first side edge is examined will be equal to from barrier
The cautious quantity of the near big gun of second side edge, at this moment compares the length to barrier both sides offset distance, all big guns in this section again
Examine and offset to that side of the short barrier of offset distance.Assuming that big gun is cautious in this section is divided into A and the classes of B two, wherein A classes are from barrier
First side edge is nearer, and its distance away from barrier first side edge is the first offset distance, and B classes are from barrier second side edge
Relatively near, its distance away from barrier second side edge is the second offset distance.If the cautious quantity of A classes big gun is examined more than B classes big gun
The quantity of point, then this two classes big gun is cautious all to be offset to barrier first side edge.If the cautious quantity of A classes big gun is equal to B classes
The cautious quantity of big gun, but the second offset distance is less than the first offset distance, then this two classes big gun is cautious just to the of barrier
Two sides offset.
A certain work area big gun as shown in Figure 2 is cautious and distribution map of barrier.There is simple obstacle thing in the work area, its observation
System is：12L6S180R, 50 meters of track pitch, 50 meters of shooting distance receives 300 meters of line-spacing, 300 meters of perpendicular offset of shot line.Can from figure
Go out, numbering be 1005 survey line on have that 7 big guns are cautious to be fallen into barrier.Wherein, there are 3 big guns close to barrier left side edge
Cautious, 4 big guns that have close to barrier right side edge are examined, therefore select cautious as this 7 big guns to the skew of barrier right side
The offset direction of place profile section.
Step S102, it is cautious to the big gun on every survey line successively to carry out pointwise skew according to the offset direction for judging.
When it is determined that behind the cautious offset direction of all big guns on current survey line, according to default skew rule, on profile section
All big guns it is cautious carry out pointwise skew, can be offset to apart from barrier most until all big guns are cautious to offset out barrier
In near external mesh point, as shown in Figure 3.Show that 7 big guns fallen into barrier in Fig. 2 are examined in Fig. 3 right to barrier
The result of side skew, this 7 big guns are located in the nearest external mesh point in barrier right side after examining skew.
When the cautious position that will be offset of forward gun has, the big gun on other surveys line is cautious to be present, the big gun on these other surveys line
The cautious big gun done on movement in the same direction, i.e. these other surveys line is cautious to enter line displacement according to when the offset direction that forward gun is examined, so that
Avoid the intersection between survey line.Examined on the position that be displaced to and will offset when when forward gun, its distance away from adjacent big gun line is less than
Corresponding big gun is cautious during default perpendicular offset of shot line, on adjacent survey line does movement in the same direction, i.e., enter according to when the offset direction that forward gun is examined
Line displacement, so that the distance between adjacent two surveys line is not less than default minimum perpendicular offset of shot line.
When on current survey line the big gun for being offset in need is cautious complete skew after, the survey line for crossing barrier by next
As current survey line, step S101 and S102 are repeated, until all surveys line for crossing barrier complete skew.
A certain work area big gun as shown in Figure 4 is cautious and distribution map of barrier.There is complex barrier thing in the work area, its observation
System is：12L6S180R, 50 meters of track pitch, 50 meters of shooting distance receives 300 meters of line-spacing, 300 meters of perpendicular offset of shot line.Numbering is in the work area
There is big gun to examine on 1005 and 1006 this two surveys line to fall into the barrier.According to the offset direction for determining, wherein numbering is
The big gun fallen into barrier on 1005 this survey line is examined and offset to the left side of barrier, and numbering is to be fallen on 1006 this survey line
Big gun in barrier is examined and offset to the right side of barrier.In order to avoid side line intersects, numbering is corresponding on 1007 this survey line
Big gun it is cautious corresponding offset two grids to the right, the spacing between the two grids is default minimum perpendicular offset of shot line, such as Fig. 5
It is shown.Fig. 5 is the effect diagram after needing the big gun into line displacement to examine skew on this three surveys line.
Step S103, whether by-line pointwise judges that the big gun on the survey line after skew is cautious needs to carry out positive smooth treatment,
And when judging that needs carry out positive smooth treatment, it is cautious to these big guns to carry out positive smooth treatment.
After falling with that the big gun in barrier is cautious on all surveys line and offsetting out barrier, in order to avoid the adjacent big gun after skew
Cautious jumping characteristic is too big, wave field sampling and follow-up data treatment is impacted, so also needing to on the survey line after skew
All big guns examine the judgement for carrying out smooth treatment, when judging that big gun is cautious and needing to carry out smooth treatment, these big guns are examined into
Row smooth treatment.In one embodiment, whether judge that the big gun on every survey line is cautious successively needs to carry out smooth treatment；Judging
The big gun gone out on survey line is examined after needing to carry out smooth treatment, cautious to the big gun on every survey line successively to carry out smooth treatment.It is above-mentioned
The judgement and treatment that carry out smooth treatment are examined to the big gun on every survey line successively including successively to the big gun inspection on every survey line
Point carries out the judgement and treatment of positive smooth treatment and/or reverse smooth treatment.Specifically,
After all surveys line for crossing barrier complete skew, according to survey line numbering from small to large or according to survey line position a from left side
To right order, all big guns on each survey line for entering line displacement are examined with the pointwise since initial big gun is cautious and is calculated, sentenced
Breaking, whether these big guns are cautious needs to carry out positive smooth treatment, or, according to survey line numbering from big to small or according to survey line position from
The right side is examined the pointwise since initial big gun is cautious to all big guns on each survey line for entering line displacement and is calculated to left order,
Whether judge that these big guns are cautious needs to carry out reverse smooth treatment.
For the situation for being smoothed into positive smooth treatment, in order to avoid carrying out the current survey line after positive smooth treatment
Exist with adjacent left side survey line and intersects, or interval between this two surveys line is less than default perpendicular offset of shot line, in addition it is also necessary to these
Big gun examines the judgement and treatment for carrying out reverse smooth treatment.I.e. to these big guns it is cautious carry out positive smooth treatment after, then by
Whether point judges that the big gun after positive smooth treatment on every survey line is examined needs to carry out reverse smooth treatment, then again to these big guns
The cautious judgement and treatment for carrying out reverse smooth treatment.
For the situation for being smoothed into reverse smooth treatment, in order to avoid carrying out the current survey line after reverse smooth treatment
Exist with adjacent the right survey line and intersects, or interval between this two surveys line is less than default perpendicular offset of shot line, in addition it is also necessary to these
Big gun examines the judgement and treatment for carrying out positive smooth treatment.I.e. to these big guns it is cautious carry out reverse smooth treatment after, then by
Whether point judges that the big gun after reverse smooth treatment on every survey line is cautious needs to carry out positive smooth treatment, then it is determined that needs
It is cautious to these big guns to carry out positive smooth treatment when carrying out positive smooth treatment.
In the present embodiment, using first examining the judgement and the place that carry out positive smooth treatment to big gun on the survey line after skew
Manage, then big gun on the survey line after positive smooth treatment is carried out to these and examine the judgement and treatment that carry out reverse smooth treatment.Currently
Big gun examines the specific judgement that carries out positive smooth treatment and processing procedure is as follows on survey line：
(1) the cautious azimuth of adjacent two big gun and the azimuthal difference of survey line on current survey line are calculated.Adjacent two big gun is examined
Azimuth can according to this two big gun examine coordinate be calculated, survey line azimuth can obtain from seismic exploration data.One
In embodiment, azimuth and the azimuthal difference of survey line that adjacent two big gun of calculating is examined refer to the line between adjacent two big gun is examined
With the angle theta of vertical gridlines.
(2) azimuth that adjacent two big gun is examined is contrasted with the azimuthal difference of survey line and default Smoothing angle,
To judge whether need to carry out positive smooth treatment when forward gun is cautious.S is examined with adjacent two big gun on current survey linei、Si+1As a example by.
If big gun examines Si、Si+1Between the angle theta of line and vertical gridlines be not more than default Smoothing angle α, then big gun examines Si
And Si+1Positive smooth treatment need not just be carried out；If big gun examines Si、Si+1Between line be less than with the angle theta of vertical gridlines
Default Smoothing angle α, then big gun examines SiPositive smooth treatment will be carried out.The size of general default Smoothing angle α,
Length and width according to grid are calculated.For square net, Smoothing angle α is 45 degree.
(3) judging as cautious (such as cautious S of big gun of forward guni) need to carry out positive smooth treatment after, by big gun examine SiBy step
Migration process in rapid S101 described in identified offset direction and step S102 is moved, until the big gun it is cautious with
Next big gun examines Si+1Azimuth and the azimuthal difference of survey line be not more than default Smoothing angle α, and the cautious skew of the big gun
Untill position is not fallen within barrier afterwards.
(4) as cautious (such as cautious S of big gun of forward guni) after skew, by previous big gun, cautious (big gun examines Si-1) as working as forward gun
It is cautious, the above (1), (2) and (3) these three steps are repeated, carry out positive smooth place until institute is in need on current survey line
The big gun of reason is cautious to complete positive smooth treatment.
Current survey line the big gun for carrying out positive smooth treatment in need is cautious complete positive smooth treatment after, will with it is current
The adjacent the right survey line of survey line repeats above-mentioned steps (1)-(4) as current survey line, until all big gun inspections on all surveys line
Point completes positive smooth treatment.
Fig. 6 is the result schematic diagram that smooth treatment is carried out to the survey line shown in Fig. 5.Numbering in Fig. 5 is 1005 survey
The cautious line between 1021 and 1022 of big gun and the angle theta of vertical gridlines are 50 degree on line, greatly with default Smoothing angle 45
Degree, so big gun cautious 1021 is needed into line displacement, the position after its skew is as shown in Figure 6.In figure 6, big gun cautious 1021 with
The angle of the cautious line and vertical gridlines between 1020 and 1021 of line, big gun between 1022 is all 45 degree, meets smooth
Angle requirement, completes smooth treatment.
Equally, to the survey line that numbering in Fig. 5 is 1006, big gun examines the line and vertical grid between 1022 and 1023 thereon
The angle of line is also 50 degree, and more than 45 degree of default Smoothing angle, big gun cautious 1022 enters line displacement, big gun examines 1021,1020,
1019th, 1018 offset successively, until the cautious line and consecutive points between of all big guns be not more than with the angle of vertical gridlines it is flat
Sliding angle, final migration result is as shown in Figure 6.From fig. 6 it can be seen that by after smooth treatment, the big gun on all surveys line is examined
Point distribution has good continuity and slickness, so as to ensure that seismic wave field can realize continuous sampling.
Step S104, whether the big gun that by-line pointwise judges to carry out on the survey line after positive smooth treatment is examined needs to carry out instead
It is cautious to these big guns to carry out reverse smooth treatment to smooth treatment, and when judging that needs carry out reverse smooth treatment.
All big guns are cautious on to all surveys line is carried out after positive smooth treatment terminates, according to survey line numbering from big to small or
It is cautious to all big guns on each survey line for entering line displacement since initial big gun is cautious according to survey line position order from right to left
Pointwise is calculated, and whether judge that these big guns are cautious needs to carry out reverse smooth treatment；Judging that needs carry out reverse smooth place
It is cautious to these big guns to carry out reverse smooth treatment during reason, it is disposed until all big guns are cautious on all surveys line.
The specific judgement and processing procedure and positive light for carrying out reverse smooth treatment are examined to all big guns on survey line successively
The specific judgement of sliding treatment and processing procedure are identical, no longer go to live in the household of one's in-laws on getting married chat herein.
In sum, in the embodiment of the present application by determine the cautious offset direction of big gun and offset distance big gun is examined into
Line displacement, and it is cautious to the big gun after skew carry out positive smooth treatment and reverse smooth treatment, can realize that seismic wave field is continuous
The purpose of sampling.
The embodiment of the present application additionally provides a kind of cautious device of skew big gun, as shown in fig. 7, the device includes：Judge single
Unit 701, offset units 702, smooth treatment judging unit 703 and smooth treatment unit 704.Wherein, identifying unit 701 is used for
How much several examine according to the cautious length away from the lateral extent of barrier two of big gun and the big gun that can be offset to barrier both sides, sentence successively
The cautious offset direction of big gun on fixed every survey line；Offset units 702 are used for according to the offset direction for judging, successively to every survey line
Upper big gun is examined into line displacement.
Specifically, being directed to each survey line, identifying unit 701 is used to cross all of barrier by continuous on current survey line
Big gun is cautious to be classified as one section, calculates this section of upper cautious distance away from barrier both sides of all big guns；According to all big guns in this section it is cautious away from
The distance of barrier both sides, number is examined and from the side of barrier second by the big gun compared from barrier first side edge relative close
The big gun of edge relative close examines several how much offset directions cautious to judge this section of upper all big guns.Judging from obstacle
The big gun of thing first side edge relative close examine number more than from barrier second side edge relative close big gun examine number when, judge
This section of upper all big guns are examined and offset to the first side of barrier；Judging the big gun inspection from barrier first side edge relative close
Points be equal to from the big gun of barrier second side edge relative close examine number when, by big gun it is cautious away from barrier first side edge away from
Contrasted with a distance from barrier second side edge from big gun is cautious；It is determined that big gun it is cautious away from barrier first side edge away from
Examined when with a distance from barrier second side edge from less than big gun, judge that this section of upper all big guns examine the first lateral deviation to barrier
Move.
Accordingly, each survey line is directed to, offset units 702 are used for according to the offset direction for judging, to current survey line
On the big gun that falls into barrier is cautious carries out pointwise skew, it is ensured that do not produced with adjacent survey line and intersected, and guarantee and adjacent survey line
Between distance be not less than default perpendicular offset of shot line.
After smooth treatment judging unit 703 is used for the cautious completion skew of the big gun on all surveys line, every survey line is judged successively
On big gun cautious whether need to carry out smooth treatment.The cautious needs of big gun that smooth treatment unit 704 is used on survey line is judged
It is cautious to the big gun on every survey line successively to carry out smooth treatment after carrying out smooth treatment.
Specifically, being directed to each survey line, smooth treatment judging unit 703 is used for the big gun that pointwise is judged on current survey line
It is cautious whether to need to carry out smooth treatment.Accordingly, the big gun that smooth treatment unit 704 is used on current survey line is judged is examined
After needing to carry out smooth treatment, pointwise is cautious to the big gun on current survey line to carry out smooth treatment.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application have it is many deformation and
Change is without deviating from spirit herein, it is desirable to which appended claim includes these deformations and changes without deviating from the application's
Spirit.
Claims (10)
1. it is a kind of to offset the cautious method of big gun, it is characterised in that including：
S1, examines in the length and this bar survey line of barrier both sides of the edge distance away from barrier two according to big gun on every survey line
How much several the big gun of nearlyer lateral edges examines in lateral edges, and the cautious offset direction of big gun on every survey line is judged successively；
S2, according to the offset direction for judging, examines into line displacement to big gun on every survey line successively；
S3, whether after the cautious completion skew of big gun on all surveys line, judging that the big gun on every survey line is cautious successively needs to carry out light
Sliding treatment；
S4, big gun on survey line is judged is cautious need to carry out smooth treatment after, successively to needing to carry out the survey line of smooth treatment
On big gun it is cautious carry out smooth treatment,
Wherein, whether the big gun judged successively on every survey line is cautious needs to carry out smooth treatment to include：
(1) whether pointwise judges that big gun on current survey line is cautious needs to carry out smooth treatment；
Accordingly, after the big gun on survey line is judged is examined and needs to carry out smooth treatment, successively to the big gun on every survey line
It is cautious to carry out smooth treatment and include：
(2) after the big gun on current survey line is judged is examined and needs to carry out smooth treatment, pointwise is examined to the big gun on current survey line
Carry out smooth treatment；
(3) after the cautious completion smooth treatment of all big guns on current survey line, using next survey line as current survey line, repeat
Above step (1)-(2), smooth treatment is completed until all big guns are cautious on all surveys line.
2. method according to claim 1, it is characterised in that described cautious away from barrier both sides according to big gun on every survey line
The big gun of nearlyer lateral edges examines several numbers in barrier both sides of the edge in the length of Edge Distance and this bar survey line, according to
It is secondary to judge that the cautious offset direction of big gun includes on every survey line：
(1) examined in the length and current survey line of the lateral extent of barrier two away from the side of barrier two according to big gun on current survey line
How much several the big gun of nearlyer lateral edges examines in edge, and pointwise judges the cautious skew of the big gun fallen into barrier on current survey line
Direction；
Accordingly, described according to the offset direction for judging, big gun on every survey line is examined includes successively into line displacement：
(2) according to the offset direction for judging, pointwise is examined into line displacement to the big gun fallen into barrier on current survey line；
(3) on the current survey line the big gun for being offset in need is cautious offset out barrier after, cross barrier by next
Survey line repeats above step (1)-(2) as current survey line, and obstacle is offset out until all big guns are cautious on all surveys line
Thing.
3. method according to claim 2, it is characterised in that described cautious away from barrier both sides according to big gun on current survey line
The big gun of nearlyer lateral edges examines several numbers in barrier both sides of the edge in the length of distance and current survey line, and pointwise is sentenced
The offset direction that the big gun fallen into barrier on settled preceding survey line is examined includes：
The continuous all big guns for crossing barrier are examined and is classified as one section, calculate this section of upper all big guns cautious away from barrier both sides of the edge
Distance；
It is relative from barrier first side edge by comparing according to this section of upper cautious distance away from barrier both sides of the edge of all big guns
Nearer big gun examines number and the big gun from barrier second side edge relative close examine it is several number judge all big guns in this section
Cautious offset direction.
4. method according to claim 3, it is characterised in that described by comparing from barrier first side edge relatively
Near big gun examines number and the big gun from barrier second side edge relative close examine it is several number judge all big guns inspections in this section
The offset direction of point includes：
It is more than from barrier second side edge relatively judging that the big gun from barrier first side edge relative close examines to count
When near big gun examines number, judge that all big guns are examined to the skew of the side of barrier first in this section.
5. method according to claim 3, it is characterised in that described by judging from barrier first side edge relatively
Near big gun examines number and the big gun from barrier second side edge relative close examine it is several number judge all big guns inspections in this section
The offset direction of point includes：
It is equal to from barrier second side edge relatively judging that the big gun from barrier first side edge relative close examines to count
During the cautious number of near big gun, by the cautious distance away from barrier first side edge of big gun and big gun it is cautious away from barrier second side edge away from
From being contrasted；
It is determined that the cautious distance away from barrier first side edge of big gun it is cautious less than big gun away from barrier second side edge apart from when,
Judge that all big guns are examined to the skew of the side of barrier first in this section.
6. the method according to any one of claim 2-5, described according to the offset direction for judging, pointwise is to current survey line
On the big gun that falls into barrier examine and include into line displacement：
When having on the cautious position that will be offset of forward gun, other big guns are cautious to be present, and described other big guns are cautious also to examine according to when forward gun
Offset direction enter line displacement,
Or,
It is described to offset when distance of the position that will be offset when forward gun is cautious away from adjacent survey line is less than default perpendicular offset of shot line
Big gun on position is examined also according to when line displacement is entered in the offset direction that forward gun is examined.
7. method according to claim 1, it is characterised in that whether the pointwise judges that the big gun on current survey line is cautious needs
Carrying out smooth treatment includes：
1. the cautious azimuth with next big gun between cautious of the fooled forward gun of the current survey line after skew is calculated azimuthal with survey line
Difference；
2. will be smoothed with default when the difference between the cautious azimuth and survey line azimuth with next big gun between cautious of forward gun
Angle is contrasted, and judges whether to need to carrying out smooth treatment when forward gun is cautious；
Accordingly, after the big gun on current survey line is judged is examined and needs to carry out smooth treatment, pointwise is on current survey line
Big gun cautious carry out smooth treatment and include：
3. judging when the difference between the cautious azimuth and survey line azimuth with next big gun between cautious of forward gun is more than pre-
If Smoothing angle after, line displacement is entered in the offset direction to judging in forward gun is cautious according to step S1；
4. whether to being examined after line displacement when forward gun, judging that the upper big gun examined when forward gun is examined needs to carry out smooth place
Reason；Repeat step 1. -3., complete smooth treatment until all big guns are cautious on current survey line.
8. method according to claim 7, it is characterised in that whether the big gun judged successively on every survey line is cautious needs
Carrying out smooth treatment includes：
Order according to survey line numbering from big to small or according to survey line position from left to right, judges the big gun inspection on every survey line successively
Whether point needs to carry out positive smooth treatment,
Or,
Order according to survey line numbering from small to large or according to survey line position from right to left, judges the big gun inspection on every survey line successively
Whether point needs to carry out reverse smooth treatment；
Accordingly, after the big gun on survey line is judged is examined and needs to carry out smooth treatment, successively to needing to carry out smooth place
Big gun on the survey line of reason is cautious to carry out smooth treatment includes：
Big gun on survey line is judged is examined after needing to carry out smooth treatment, according to survey line numbering from big to small or according to survey line position
Order from left to right is put, the big gun on the survey line of smooth treatment is cautious carries out positive smooth treatment to needing to carry out successively,
Or
Big gun on survey line is judged is examined after needing to carry out smooth treatment, according to survey line numbering from small to large or according to survey line position
Order from right to left is put, the big gun on the survey line of smooth treatment is cautious carries out reverse smooth treatment to needing to carry out successively.
9. method according to claim 8, it is characterised in that successively to needing to carry out the big gun on the survey line of smooth treatment
Examine after carrying out positive smooth treatment, the order according still further to survey line numbering from small to large or according to survey line position from right to left, according to
Whether the big gun that secondary judgement is carried out on every survey line after positive smooth treatment is examined needs to carry out reverse smooth treatment；
After the cautious needs of big gun on every survey line after judging to carry out positive smooth treatment carry out reverse smooth treatment, according to
Survey line numbers the order from small to large or according to survey line position from right to left, successively on every survey line after positive smooth treatment
Big gun it is cautious carry out reverse smooth treatment,
Or,
Successively to need to carry out the big gun of smooth treatment is cautious carry out reverse smooth treatment after, according still further to survey line numbering from big to small or
According to survey line position order from left to right, judge to carry out successively big gun on every survey line after reverse smooth treatment it is cautious whether
Needs carry out positive smooth treatment；
After the cautious needs of big gun on every survey line after judging to carry out reverse smooth treatment carry out positive smooth treatment, according to
Survey line numbers the order from big to small or according to survey line position from left to right, successively on every survey line after reverse smooth treatment
Big gun cautious carry out positive smooth treatment.
10. it is a kind of to offset the cautious device of big gun, it is characterised in that including：
Identifying unit, the identifying unit be used for according to the cautious length away from barrier both sides of the edge distance of big gun on every survey line with
And the big gun of nearlyer lateral edges examines several numbers in barrier both sides of the edge on this bar survey line, judges successively on every survey line
The cautious offset direction of big gun；
Offset units, the offset units are used for according to the offset direction for judging, cautious to big gun on every survey line successively to carry out partially
Move；
Smooth treatment judging unit, after the judging unit is used for the cautious completion skew of the big gun on all surveys line, judges every successively
Whether the big gun on bar survey line is examined needs to carry out smooth treatment；
Smooth treatment unit, the big gun that the smooth treatment unit is used on survey line is judged is examined to be needed to carry out smooth treatment
Afterwards, to needing to carry out, the big gun on the survey line of smooth treatment is cautious carries out smooth treatment successively,
Wherein, for each survey line, the smooth treatment judging unit judges the big gun inspection on current survey line specifically for pointwise
Whether point needs to carry out smooth treatment,
Accordingly, the smooth treatment unit needs to carry out smooth treatment specifically for the big gun on current survey line is judged is cautious
Afterwards, pointwise is cautious to the big gun on current survey line carries out smooth treatment.
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| CN110927777B (en) * | 2018-09-19 | 2021-12-10 | 中国石油化工股份有限公司 | Moving method and device for three-dimensional earthquake acquisition and observation system barrier area shot point |
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| CN103869355B (en) * | 2012-12-18 | 2016-10-12 | 中国石油天然气集团公司 | A kind of method determining that combination examined by big gun |
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