CN106291699B - The inclined detection method of big gun and the correct method for blowing out position of positioning in seismic prospecting - Google Patents
The inclined detection method of big gun and the correct method for blowing out position of positioning in seismic prospecting Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000007664 blowing Methods 0.000 title claims description 8
- 230000005284 excitation Effects 0.000 claims abstract description 23
- 238000007689 inspection Methods 0.000 claims abstract description 7
- 238000003908 quality control method Methods 0.000 abstract description 3
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- 238000003708 edge detection Methods 0.000 description 2
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
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Abstract
The present invention provides the inclined detection method of big gun in a kind of seismic prospecting and the method for the correct excitation position of positioning.The inclined detection method of big gun of the present invention includes：Pick up the first arrival time of a certain single-shot data；For each shot point in the serial shot point comprising a certain shot point and geophone station position relationship data, the offset distance first arrival time relation corresponding to it is built；First arrival time is found out with offset distance to increase and be incremented by the optimal target offset of situation away from first arrival time relation；Target offset is contrasted away from the shot point corresponding to first arrival time relation with the shot point recorded in the trace header of single-shot data, if the two coordinate position is not met, then think the big gun inspection relation mistake of the big gun (i.e., big gun is inclined), while position is excited to be correct away from the shot point corresponding to first arrival time relation using target offset.The present invention fast and accurately can be biased the automatic detection of row to the big gun of single shot record, while point out correctly to excite position, disclosure satisfy that the needs of field single-shot scene Quality Control.
Description
Technical field
The present invention relates to the data acquisition technology field of oil-gas seismic exploration, and specifically, the present invention relates to a kind of earthquake
In exploration the correct method for blowing out position is positioned in the inclined detection method of big gun and a kind of seismic prospecting.
Background technology
In general, to be also known as big gun inclined for big gun inspection relation mistake, refer in oil seismic exploration, shot point excitation positional fault shows
As it can cause reception relation chaotic, and can seriously affect single-shot quality and follow-up processing work.
For this reason, find that big gun is inclined and the correct point position of positioning is particularly important in real time in collection primary scene.It is however, traditional
Time-consuming and accuracy is difficult to be guaranteed for the inclined detection method of big gun.
The content of the invention
It is an object of the invention to solve at least one in deficiencies of the prior art.
To achieve these goals, the present invention provides a kind of big gun side of detection partially based on offset distance Yu initial value time relationship
Method and the correct method for blowing out position of positioning.
An aspect of of the present present invention provides the inclined detection method of big gun in a kind of seismic prospecting.The method includes the steps：Pickup
The first arrival time of a certain single-shot data, a certain single-shot data are connect by being excited in a certain shot point in predetermined arrangement piece
Receive and obtain；For in the serial shot point comprising a certain shot point and geophone station position relationship data (for example, sps data)
Each shot point, using the offset distance between the shot point and the predetermined arrangement piece and the first arrival time, builds the big gun
The first arrival time of point is with offset distance variation relation, so as to obtain offset distance-first arrival time relation corresponding to each shot point；
In the set being made of offset distance-first arrival time relation corresponding to each shot point, first arrival time is found out with offset
It is incremented by the optimal target offset of situation away from increase away from-first arrival time relation；By the target offset away from-first arrival time relation institute
Corresponding shot point is contrasted with the shot point recorded in the trace header of the single-shot data, if the two coordinate position is not met, is recognized
Relation mistake (alternatively referred to as big gun is inclined) is examined for the big gun of the big gun, while with the target offset away from corresponding to-first arrival time relation
Shot point is correct excitation position.
In an exemplary embodiment of the inclined detection method of big gun of the present invention, the first arrival time of finding out increases with offset distance
It is big and being incremented by the optimal target offset of situation can include away from the step of-first arrival time relation：Determine each in the set
The incremental relation value of offset distance-first arrival time relation；Target is used as using the offset distance of incremental relation value maximum-first arrival time relation
Offset distance-first arrival time relation.Wherein, the mode of the incremental relation value for determining each offset distance-first arrival time relation is：
Provide the original constant value of incremental relation value；In any offset distance-first arrival time relation in the set, by the beginning of i-th
To time and each first arrival time thereafter respectively compared with, if i-th of first arrival time is less than a first arrival thereafter
Between, then incrementally relation value increase by 1；I seek all over each first arrival time in any offset distance-first arrival time relation or time
The first arrival time of each in addition to last in any offset distance-first arrival time relation is sought, that is, is obtained described any
The incremental relation value of offset distance-first arrival time relation, wherein, i is more than or equal to 1 and is less than any offset distance-first arrival time
First arrival time number in relation；In the same way, passing for each offset distance-first arrival time relation in the set is drawn
Increase relation value.
Another aspect provides a kind of method that correct excitation position is positioned in seismic prospecting.The method bag
Include step：Pick up the first arrival time of a certain single-shot data, a certain single-shot data in a certain shot point by exciting, and pre-
Fixed arrangement piece is received and obtained；For each shot point in the seismic data comprising a certain single-shot data, utilizing should
Offset distance between shot point and the predetermined arrangement piece, and the first arrival time, build the first arrival time of the shot point with inclined
Move away from variation relation, so as to obtain offset distance-first arrival time relation corresponding to each shot point；By each shot point
In the set that corresponding offset distance-first arrival time relation is formed, find out first arrival time and increase with offset distance and be incremented by situation
For optimal target offset away from-first arrival time relation, the target offset is as correct away from the shot point corresponding to-first arrival time relation
Excitation position.
In an exemplary embodiment of the correct excitation location method of positioning of the present invention, it is described find out first arrival time with
Offset distance increases and being incremented by the optimal target offset of situation can include away from the step of-first arrival time relation：Determine the set
In each offset distance-first arrival time relation incremental relation value；With the offset distance of incremental relation value maximum-first arrival time relation
As target offset away from-first arrival time relation.Wherein, the incremental relation value for determining each offset distance-first arrival time relation
Mode be：Provide the original constant value of incremental relation value；In any offset distance-first arrival time relation in the set,
By i-th of first arrival time and each first arrival time thereafter respectively and compared with only carrying out once, if i-th of first arrival time is every
Less than a first arrival time thereafter, then incrementally relation value increase by 1；I is sought all in any offset distance-first arrival time relation
Each first arrival time seeks the first arrival of each in addition to last in any offset distance-first arrival time relation all over
Time, that is, obtain the incremental relation value of any offset distance-first arrival time relation, wherein, i is more than or equal to 1 and less than described
First arrival time number in any offset distance-first arrival time relation；In the same way, each offset in the set is drawn
Incremental relation value away from-first arrival time relation.
Compared with prior art, beneficial effects of the present invention include：Fast and accurately the big gun of single shot record can be biased
The automatic detection of row, while point out correctly to excite position, to realize that efficient, accurate single shot record quality monitoring provides one kind
Effective technological means；It disclosure satisfy that the needs of field single-shot scene Quality Control, had a wide range of applications in the wild in collection project
Prospect.
Brief description of the drawings
Fig. 1 shows the flow signal of an exemplary embodiment of the inclined detection method of big gun in seismic prospecting of the invention
Figure.
Fig. 2 shows the stream for the exemplary embodiment that correct excitation location method is positioned in the seismic prospecting of the present invention
Journey schematic diagram.
Fig. 3 shows shot position and the schematic layout pattern of arrangement piece of a certain seismic data.
Fig. 4 shows the schematic diagram of offset distance-first arrival time relation corresponding to some shot point.
Fig. 5 shows the schematic diagram of offset distance-first arrival time relation corresponding to another shot point.
Embodiment
Hereinafter, will combine exemplary embodiment come the inclined detection method of big gun in the seismic prospecting that the present invention will be described in detail,
And the method that correct excitation position is positioned in seismic prospecting.
Fig. 1 shows the flow signal of an exemplary embodiment of the inclined detection method of big gun in seismic prospecting of the invention
Figure.Fig. 2 shows that the flow for the exemplary embodiment that correct excitation location method is positioned in the seismic prospecting of the present invention is shown
It is intended to.Fig. 3 shows shot position and the schematic layout pattern of arrangement piece of a certain seismic data.Fig. 4 shows some shot point
The schematic diagram of corresponding offset distance-first arrival time relation.When Fig. 5 shows offset distance-first arrival corresponding to another shot point
Between relation schematic diagram.
In one exemplary embodiment of the present invention, as shown in Fig. 1, Fig. 3 to Fig. 5, the big gun side of detection partially in seismic prospecting
Method can pass through step：(1) first arrival time of single-shot data is picked up, (2) obtain each offset corresponding to shot point in seismic data
Target offset is found out away from-first arrival time relation, (3) to judge big gun inspection relation away from-first arrival time relation and (4) and determine correct
Position is excited to realize.
Each step is described in detail as follows：
(1) first arrival time of single-shot data is picked up
The first arrival time of a certain single-shot data is picked up, which is making a reservation for by being excited in a shot point
Arrangement piece receive and obtain.In general, each shot point excitation, has arrangement piece set in advance to receive signal, so as to be formed
Single-shot data.For example, as shown in figure 3, it can be excited by A points and signal is received by the arrangement piece of "+" symbolic layout, to be formed
Single-shot data.In general, single-shot data include the corresponding first arrival time in each road, which have recorded seismic wave and is energized into from shot point
Wave detector receives the time used in signal.Shot position, line are such as excited in addition, also can record in the trace header of single-shot data
Number, the basic information such as period.For example, can be by the first arrival time of automatic Picking single shot record (for example, edge detection can be used to calculate
Method etc. carrys out automatic Picking), obtain the corresponding first arrival time of per pass, which, which have recorded seismic wave and be energized into wave detector from shot point, connects
Receive the time used in signal.
(2) offset distance-first arrival time relation corresponding to each shot point in seismic data is obtained
For the serial shot point comprising the shot point corresponding to above-mentioned a certain single-shot data and geophone station position relationship data (example
Such as, can be SEG-sps data formats etc.) in each shot point (for example, A, B, C, D shot point in Fig. 3), utilize the shot point
Offset distance and above-mentioned first arrival time between above-mentioned predetermined arrangement piece, build the first arrival time of the shot point with offset distance
Variation relation, so as to obtain offset distance-first arrival time relation corresponding to each shot point.That is, for comprising upper
In serial shot point and the geophone station position relationship data of stating the shot point (for example, A shot points) corresponding to the single-shot data in step (1)
Any one shot point, the first arrival time being employed in above-mentioned steps (1) and the shot point and the row in above-mentioned steps (1)
Offset distance between column-slice, to build the first arrival time of the shot point with offset distance variation relation, so as to form each shot point institute
Corresponding offset distance-first arrival time relation.For example, offset distance-first arrival time relation can be using offset distance as abscissa and with first arrival
Time portrays the relation that first arrival time changes with offset distance for ordinate.Serial shot point and geophone station position relationship data are usual
Position and position relationship data including the geophone station in many shot points and its arrangement piece, for example, serial shot point and geophone station position
Put the data that relation data can be such as SEG-sps data formats.
(3) target offset is found out away from-first arrival time relation
In the set that offset distance-first arrival time relation in by above-mentioned steps (2) corresponding to each shot point is formed, look for
Go out first arrival time with offset distance to increase and be incremented by the optimal offset distance-first arrival time relation of situation, as target offset is away from-first arrival
Time relationship.Target offset is away from a certain single-shot data that the shot point corresponding to-first arrival time relation is in above-mentioned steps (1)
Correct excitation position (alternatively referred to as blowing out position).
For example, it is offset distance-first arrival time relation schematic diagram of B shot points in Fig. 4；In Fig. 5 for A shot points offset distance-just
To time relationship schematic diagram.Obviously, first arrival time increases with offset distance and is incremented by situation and is better than in Fig. 4 in Fig. 5.According to class
As mode, can also draw offset distance-first arrival time relation schematic diagram of C, D shot point.Through comparing, first arrival time in Fig. 5 with
Offset distance increases and incremental situation is optimal, then the offset distance in Fig. 5-first arrival time relation is target offset away from-first arrival time pass
System, A shot points are correctly excitation position.
In the present example embodiment, first arrival time is found out with offset distance to increase and be incremented by the optimal target offset of situation
The step of away from-first arrival time relation, it is specifically as follows：Determine each offset distance-first arrival time relation in the set of step (3)
Incremental relation value；Using the offset distance of incremental relation value maximum-first arrival time relation as target offset away from-first arrival time pass
System.However, the method not limited to this of the present invention, for example, also can be by each offset distance-first arrival in the set of step (3) when
Between relation plane coordinates figure, found out by way of counting or drawing first arrival time with offset distance increase and be incremented by situation it is optimal
Target offset away from-first arrival time relation.
Wherein it is determined that the mode of the incremental relation value of each offset distance-first arrival time relation can be：A, incremental pass is provided
(it is one normal that the initial value of the incremental relation value of i.e. each offset distance-first arrival time relation is constant to the original constant value of set occurrence K
Number), for example, it is zero that the original constant value that can set incremental relation value K is constant；B, for any inclined in the set of step (3)
Move away from for-first arrival time relation, for example, having n first arrival time in any offset distance-first arrival time relation, by the beginning of i-th
To time (i can be selected 1 into n-1) and each first arrival time thereafter successively respectively compared with and i-th of first arrival
Time and any one first arrival time thereafter all only compared with once, if i-th of first arrival time is often less than at the beginning of thereafter one
To time, then incrementally relation value increase by 1, otherwise incrementally relation value is constant (for example, original constant value K is zero, if i-th of first arrival
Time is less than i+1 first arrival time, then K increases by 1, K=1；If i-th of first arrival time is less than the i-th+2 first arrival times, K
Increase by 1, K=2, until i-th of first arrival time, compared with each initial time thereafter after 1 time, obtained K values can be i.e.
For the K values corresponding to i-th of first arrival time)；And so on, until will be each in any offset distance-first arrival time relation
(that is, each or i in n-1 first arrival time seeks each in n first arrival time all over to first arrival time before i is sought all over, seeks all over
Mode can carry out out of order；Certainly, because not having first arrival time after n-th of first arrival time, therefore the scope of seeking all over of i is
It is no including n-th of first arrival time (i.e. last first arrival time), do not influence to be incremented by the size of relation value K) with institute thereafter
There is first arrival time relatively to finish, that is, obtain the incremental relation value K of any offset distance-first arrival time relation；C, with step b's
Mode, draws the incremental relation value K of each offset distance-first arrival time relation.That is, the mode of abovementioned steps b can also
For：In any offset distance-first arrival time relation in the set of step (3), by the 1st first arrival time and thereafter each
First arrival time (for example, the 2nd, 3 ..., n first arrival time) once compared respectively successively, if the 1st first arrival time is per small
In a first arrival time thereafter, then incrementally relation value increase by 1, otherwise incrementally relation value is constant；By the 2nd first arrival time and its
Afterwards each first arrival time (for example, the 3rd, 4 ..., n first arrival time) once compared respectively, if during the 2nd first arrival
Between be often less than a first arrival time thereafter, then incrementally relation value increase by 1, otherwise incrementally relation value is constant；And so on, until
Each first arrival time in any offset distance-first arrival time relation is relatively finished with all first arrival times thereafter, i.e.,
Obtain the incremental relation value K of any offset distance-first arrival time relation.
However, determine that the incremental relation value mode of each offset distance-first arrival time relation is not limited to foregoing lead in the present invention
The mode for crossing a, b, c carries out, for example, can also be carried out by other statisticals.
(4) judge big gun inspection relation and determine correct excitation position
By the target offset found out in step (3) away from the shot point corresponding to-first arrival time relation with it is described in step (1)
The shot point recorded in the trace header of a certain single-shot data is contrasted, if the two coordinate position is not met, then it is assumed that the big gun inspection of the big gun
Relation mistake, while correct excitation position is used as away from the shot point corresponding to-first arrival time relation using the target offset.
Fig. 2 shows the stream for the exemplary embodiment that correct excitation location method is positioned in the seismic prospecting of the present invention
Journey schematic diagram.
In another exemplary embodiment of the present invention, correct excitation is positioned as shown in Figures 2 to 5, in seismic prospecting
Location method can pass through step：(1) first arrival time of single-shot data is picked up, (2) are obtained in seismic data corresponding to each shot point
Offset distance-first arrival time relation and (3) find out target offset away from-first arrival time relation and provide correct excitation position and come
Realize.
Each step is described in detail as follows：
(1) first arrival time of single-shot data is picked up
The first arrival time of a certain single-shot data is picked up, which is making a reservation for by being excited in a shot point
Arrangement piece receive and obtain.In general, each shot point excitation, has arrangement piece set in advance to receive signal, so as to be formed
Single-shot data.For example, as shown in figure 3, it can be excited by A points and signal is received by the arrangement piece of "+" symbolic layout, to be formed
Single-shot data.In general, single-shot data include the corresponding first arrival time in each road, which have recorded seismic wave and is energized into from shot point
Wave detector receives the time used in signal.Shot position, line are such as excited in addition, also can record in the trace header of single-shot data
Number, the basic information such as period.For example, can be by the first arrival time of automatic Picking single shot record (for example, edge detection can be used to calculate
Method etc. carrys out automatic Picking), obtain the corresponding first arrival time of per pass, which, which have recorded seismic wave and be energized into wave detector from shot point, connects
Receive the time used in signal.
(2) offset distance-first arrival time relation corresponding to each shot point in seismic data is obtained
For the serial shot point comprising the shot point corresponding to above-mentioned a certain single-shot data and geophone station position relationship data (example
Such as, can be SEG-sps data formats etc.) in each shot point (for example, A, B, C, D shot point in Fig. 3), utilize the shot point
Offset distance and above-mentioned first arrival time between above-mentioned predetermined arrangement piece, build the first arrival time of the shot point with offset distance
Variation relation, so as to obtain offset distance-first arrival time relation corresponding to each shot point.That is, for comprising upper
In serial shot point and the geophone station position relationship data of stating the shot point (for example, A shot points) corresponding to the single-shot data in step (1)
Any one shot point, the first arrival time being employed in above-mentioned steps (1) and the shot point and the row in above-mentioned steps (1)
Offset distance between column-slice, to build the first arrival time of the shot point with offset distance variation relation, so as to form each shot point institute
Corresponding offset distance-first arrival time relation.For example, offset distance-first arrival time relation can be using offset distance as abscissa and with first arrival
Time portrays the relation that first arrival time changes with offset distance for ordinate.
(3) target offset is found out away from-first arrival time relation
In the set that offset distance-first arrival time relation in by above-mentioned steps (2) corresponding to each shot point is formed, look for
Go out first arrival time with offset distance to increase and be incremented by the optimal offset distance-first arrival time relation of situation, as target offset is away from-first arrival
Time relationship.Target offset is away from a certain single-shot data that the shot point corresponding to-first arrival time relation is in above-mentioned steps (1)
Correct excitation position (alternatively referred to as blowing out position).
For example, it is offset distance-first arrival time relation schematic diagram of B shot points in Fig. 4；In Fig. 5 for A shot points offset distance-just
To time relationship schematic diagram.Obviously, first arrival time increases with offset distance and is incremented by situation and is better than in Fig. 4 in Fig. 5.According to class
As mode, can also draw offset distance-first arrival time relation schematic diagram of C, D shot point.Through comparing, first arrival time in Fig. 5 with
Offset distance increases and incremental situation is optimal, then the offset distance in Fig. 5-first arrival time relation is target offset away from-first arrival time pass
System, A shot points are correctly excitation position.
In the present example embodiment, first arrival time is found out with offset distance to increase and be incremented by the optimal target offset of situation
The step of away from-first arrival time relation, it is specifically as follows：Determine each offset distance-first arrival time relation in the set of step (3)
Incremental relation value；Using the offset distance of incremental relation value maximum-first arrival time relation as target offset away from-first arrival time pass
System.However, the method not limited to this of the present invention, for example, also can be by each offset distance-first arrival in the set of step (3) when
Between relation plane coordinates figure, found out by way of counting or drawing first arrival time with offset distance increase and be incremented by situation it is optimal
Target offset away from-first arrival time relation.
Wherein it is determined that the mode of the incremental relation value of each offset distance-first arrival time relation can be：A, incremental pass is provided
(it is one normal that the initial value of the incremental relation value of i.e. each offset distance-first arrival time relation is constant to the original constant value of set occurrence K
Number), for example, it is zero that the original constant value that can set incremental relation value K is constant；B, for any inclined in the set of step (3)
Move away from for-first arrival time relation, for example, having n first arrival time in any offset distance-first arrival time relation, by the beginning of i-th
To time (i can be selected 1 into n-1) and each first arrival time thereafter successively respectively compared with and i-th of first arrival
Time and any one first arrival time thereafter all only compared with once, if i-th of first arrival time is often less than at the beginning of thereafter one
To time, then incrementally relation value increase by 1, otherwise incrementally relation value is constant (for example, original constant value K is zero, if i-th of first arrival
Time is less than i+1 first arrival time, then K increases by 1, K=1；If i-th of first arrival time is less than the i-th+2 first arrival times, K
Increase by 1, K=2, until i-th of first arrival time, compared with each initial time thereafter after 1 time, obtained K values can be i.e.
For the K values corresponding to i-th of first arrival time)；And so on, until will be each in any offset distance-first arrival time relation
(that is, each or i in n-1 first arrival time seeks each in n first arrival time all over to first arrival time before i is sought all over, seeks all over
Mode can carry out out of order；Certainly, because not having first arrival time after n-th of first arrival time, therefore the scope of seeking all over of i is
It is no including n-th of first arrival time (i.e. last first arrival time), do not influence to be incremented by the size of relation value K) with institute thereafter
There is first arrival time relatively to finish, that is, obtain the incremental relation value K of any offset distance-first arrival time relation；C, with step b's
Mode, draws the incremental relation value K of each offset distance-first arrival time relation.That is, the mode of abovementioned steps b can also
For：In any offset distance-first arrival time relation in the set of step (3), by the 1st first arrival time and thereafter each
First arrival time (for example, the 2nd, 3 ..., n first arrival time) once compared respectively successively, if the 1st first arrival time is per small
In a first arrival time thereafter, then incrementally relation value increase by 1, otherwise incrementally relation value is constant；By the 2nd first arrival time and its
Afterwards each first arrival time (for example, the 3rd, 4 ..., n first arrival time) once compared respectively, if during the 2nd first arrival
Between be often less than a first arrival time thereafter, then incrementally relation value increase by 1, otherwise incrementally relation value is constant；And so on, until
Each first arrival time in any offset distance-first arrival time relation is relatively finished with all first arrival times thereafter, i.e.,
Obtain the incremental relation value K of any offset distance-first arrival time relation.
However, determine that the incremental relation value mode of each offset distance-first arrival time relation is not limited to foregoing lead in the present invention
The mode for crossing a, b, c carries out, for example, can also be carried out by other statisticals.
In conclusion the present invention can be carried out by relation between first arrival time data and offset distance big gun detection partially and
Positioning correctly excitation position, it is achieved thereby that efficiently, accurate big gun inspection relation monitoring method, improve production efficiency；And
The method of the present invention disclosure satisfy that the needs of field single-shot scene Quality Control, before being had a wide range of applications in the wild in collection project
Scape.
Although having been combined attached drawing and exemplary embodiment above, the invention has been described, those of ordinary skill in the art
It will be apparent to the skilled artisan that in the case where not departing from spirit and scope by the claims, various modifications can be carried out to above-described embodiment.
Claims (4)
1. the inclined detection method of big gun in a kind of seismic prospecting, it is characterised in that the described method comprises the following steps：
Pick up the first arrival time of a certain single-shot data, a certain single-shot data in a certain shot point by exciting, and predetermined
Arrangement piece is received and obtained；
For each shot point in the serial shot point comprising a certain shot point and geophone station position relationship data, the big gun is utilized
Offset distance and the first arrival time between point and the predetermined arrangement piece, build the first arrival time of the shot point with offset
Away from variation relation, so as to obtain offset distance-first arrival time relation corresponding to each shot point；
In the set being made of offset distance-first arrival time relation corresponding to each shot point, find out first arrival time with
Offset distance increases and is incremented by the optimal target offset of situation away from-first arrival time relation；
By the target offset away from the shot point corresponding to-first arrival time relation and the shot point that is recorded in the trace header of the single-shot data
Contrasted, if the two coordinate position is not met, then it is assumed that the big gun of big gun inspection relation mistake, while with the target offset away from-
Shot point corresponding to first arrival time relation is correct excitation position.
2. the inclined detection method of big gun in seismic prospecting according to claim 1, it is characterised in that it is described find out first arrival time with
Offset distance increases and be incremented by the optimal target offset of situation includes away from the step of-first arrival time relation：Determine in the set
The incremental relation value of each offset distance-first arrival time relation；Using the offset distance of incremental relation value maximum-first arrival time relation as
Target offset away from-first arrival time relation,
Wherein, the mode of the incremental relation value for determining each offset distance-first arrival time relation is：
Provide the original constant value of incremental relation value；In any offset distance-first arrival time relation in the set, by i-th
Compared with a first arrival time only carries out once respectively with each first arrival time thereafter, if i-th of first arrival time is often less than it
A first arrival time afterwards, then incrementally relation value increase by 1；I seeks each in any offset distance-first arrival time relation all over
First arrival time seeks the first arrival time of each in addition to last in any offset distance-first arrival time relation all over,
The incremental relation value of any offset distance-first arrival time relation is obtained, wherein, i is more than or equal to 1 and is less than described any inclined
Move away from the first arrival time number in-first arrival time relation；In the same way, each offset distance in the set-just is drawn
To the incremental relation value of time relationship.
3. the correct method for blowing out position is positioned in a kind of seismic prospecting, it is characterised in that the described method comprises the following steps：
Pick up the first arrival time of a certain single-shot data, a certain single-shot data in a certain shot point by exciting, and predetermined
Arrangement piece is received and obtained；
For each shot point in the serial shot point comprising a certain shot point and geophone station position relationship data, the big gun is utilized
Offset distance between point and the predetermined arrangement piece, and the first arrival time, build the first arrival time of the shot point with offset
Away from variation relation, so as to obtain offset distance-first arrival time relation corresponding to each shot point；
In the set being made of offset distance-first arrival time relation corresponding to each shot point, find out first arrival time with
Offset distance increases and is incremented by the optimal target offset of situation away from-first arrival time relation, and the target offset is away from-first arrival time relation
Corresponding shot point is correct excitation position.
4. the correct method for blowing out position is positioned in seismic prospecting according to claim 3, it is characterised in that described to find out
First arrival time increases with offset distance and be incremented by the optimal target offset of situation includes away from the step of-first arrival time relation：Determine institute
State the incremental relation value of each offset distance-first arrival time relation in set；During with offset distance-first arrival of incremental relation value maximum
Between relation as target offset away from-first arrival time relation,
Wherein, the mode of the incremental relation value for determining each offset distance-first arrival time relation is：
Provide the original constant value of incremental relation value；In any offset distance-first arrival time relation in the set, by i-th
Compared with a first arrival time only carries out once respectively with each first arrival time thereafter, if i-th of first arrival time is often less than it
A first arrival time afterwards, then incrementally relation value increase by 1；I seeks each in any offset distance-first arrival time relation all over
First arrival time seeks the first arrival time of each in addition to last in any offset distance-first arrival time relation all over,
The incremental relation value of any offset distance-first arrival time relation is obtained, wherein, i is more than or equal to 1 and is less than described any inclined
Move away from the first arrival time number in-first arrival time relation；In the same way, each offset distance in the set-just is drawn
To the incremental relation value of time relationship.
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