Method, device and equipment for displaying common-receiver gather seismic data and medium

Abstract

The present disclosure relates to a method, device, equipment and medium for displaying common-receiver-point gather seismic data, the method comprising: receiving setting information of seismic trace display parameters of an observation system; constructing a regular grid for representing the positional relationship of each shot point according to the setting information; calculating the theoretical coordinates of each shot point corresponding to the regular grid in the form of equidistant distribution; determining the first shot point without correction, the second shot point requiring correction and the corresponding offset distance correction information according to the theoretical coordinates, actual coordinates of each shot point and the actual coordinates of the receiver; performing correction processing on the target seismic trace data corresponding to the second shot point according to the offset distance correction information and the setting information; and displaying the seismic trace gather data in the observation system, the seismic trace gather data containing the seismic trace data of the first shot point and the corrected seismic trace data of the second shot point. The result of the display after correction facilitates subsequent data analysis.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of geological exploration data processing, and particularly relates to a common-receiving-point gather seismic data display method and device, equipment and medium. BACKGROUND

[0002] In seismic exploration, it is often necessary to display and analyze seismic data in different gathers, such as common-shot-point gather, common-center-point gather, common-offset gather, common-receiving-point gather, etc.

[0003] With the application of node seismic acquisition technology, the advantage of displaying seismic data in common-receiving-point gather is more and more obvious. Common-receiving-point gather refers to the gather corresponding to the seismic echo data received by the same receiving point (also described as receiving point) under the excitation of different shot points (also described as excitation points). SUMMARY

[0004] In the process of implementing the present disclosure, it is found that at least the following technical problems exist in the related art: In the seismic data acquisition construction process, the position distribution of the excitation points is usually irregular, which leads to poor continuity of the first arrival wave and effective reflection wave of each seismic trace in the common-receiving-point gather in space; according to the current common-shot-point gather seismic data method, it is difficult to distinguish the first arrival wave and the reflection wave when displaying common-receiving-point gather seismic data, which is not conducive to seismic data analysis.

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the embodiments of the present disclosure provide a common-receiving-point gather seismic data display method, device, equipment and medium.

[0006] In a first aspect, the embodiments of the present disclosure provide a common-receiving-point gather seismic data display method. The display method comprises: receiving setting information of seismic trace display parameters of an observation system; constructing a regular grid for representing the position relationship of each excitation point according to the setting information; calculating the theoretical coordinates of each excitation point corresponding to the regular grid in the form of equidistant distribution; determining a first excitation point that does not need to be corrected, a second excitation point that needs to be corrected, and corresponding offset distance correction information according to the theoretical coordinates, actual coordinates of each excitation point under the regular grid, and the actual coordinates of the receiving point; correcting the target seismic trace data corresponding to the second excitation point according to the offset distance correction information and the setting information; and displaying seismic trace gather data in the observation system, wherein the seismic trace gather data includes seismic trace data of the first excitation point and corrected seismic trace data of the second excitation point.

[0007] In some embodiments, the setting information of the seismic trace display parameter includes: shot line interval setting information, shot point interval setting information, line number of a starting shot point, point number of the starting shot point, and coordinates of the starting shot point. According to the setting information, a regular grid for representing the position relationship of each shot point is constructed, including: determining the point number of the starting shot point as the horizontal number of a grid starting point, and determining the line number of the starting shot point as the vertical number of the grid starting point; determining the shot point interval setting information as the horizontal side length of the grid, and determining the shot line interval setting information as the vertical side length of the grid; determining the coordinates of the starting shot point as the coordinates of the grid starting point; and constructing the regular grid based on the grid starting point, the horizontal side length and the vertical side length of the grid.

[0008] In some embodiments, the setting information of the seismic trace display parameter further includes: shot line number increment setting information and shot point number increment setting information. The theoretical coordinates of each shot point corresponding to the regular grid in the form of equidistant distribution are calculated, including: for each shot point, calculating the horizontal grid number of the current shot point from the grid starting point based on the point number of the current shot point, the point number of the starting shot point, and the shot point number increment setting information; calculating the vertical grid number of the current shot point from the grid starting point based on the line number of the current shot point, the line number of the starting shot point, and the shot line number increment setting information; determining the theoretical horizontal coordinate of the current shot point corresponding to the regular grid according to the coordinates of the grid starting point, the horizontal grid number, and the horizontal side length; determining the theoretical vertical coordinate of the current shot point corresponding to the regular grid according to the coordinates of the grid starting point, the vertical grid number, and the vertical side length; and the theoretical horizontal coordinate and the theoretical vertical coordinate constitute the theoretical coordinates.

[0009] In some embodiments, the calculation expression of the horizontal grid number is:

[0010] The horizontal grid number = (the point number of the current shot point - the point number of the starting shot point) ÷ the shot point number increment setting information;

[0011] The calculation expression of the vertical grid number is:

[0012] The vertical grid number = (the line number of the current shot point - the line number of the starting shot point) ÷ the shot line number increment setting information;

[0013] The calculation expression of the theoretical horizontal coordinate is:

[0014] The theoretical horizontal coordinate = the horizontal coordinate of the grid starting point + the horizontal grid number × the horizontal side length;

[0015] The calculation expression of the above-mentioned theoretical longitudinal coordinate is:

[0016] The above-mentioned theoretical longitudinal coordinate = the longitudinal coordinate of the above-mentioned grid starting point + the longitudinal grid quantity × the longitudinal side length.

[0017] In some embodiments, according to the above-mentioned theoretical coordinates, actual coordinates of each excitation point under the above-mentioned regular grid, and actual coordinates of the receiving point, the first excitation point without correction, the second excitation point with correction, and corresponding offset distance correction information are determined, including: for each excitation point, determining whether the theoretical coordinates and the actual coordinates of the current excitation point are consistent; in the case of consistency, determining that the current excitation point is the first excitation point; in the case of inconsistency, determining that the current excitation point is the second excitation point; for the second excitation point, according to the actual coordinates, the theoretical coordinates of the above-mentioned second excitation point, and the actual coordinates of the above-mentioned receiving point, the offset distance correction quantity is determined.

[0018] In some embodiments, according to the actual coordinates, the theoretical coordinates of the above-mentioned second excitation point, and the actual coordinates of the above-mentioned receiving point, the offset distance correction quantity is determined, including: according to the actual coordinates of the above-mentioned second excitation point and the actual coordinates of the above-mentioned receiving point, the actual offset distance is determined; according to the theoretical coordinates of the above-mentioned second excitation point and the actual coordinates of the above-mentioned receiving point, the theoretical offset distance is determined; the difference between the actual offset distance and the theoretical offset distance is determined as the offset distance correction quantity.

[0019] In some embodiments, the above-mentioned setting information includes: first arrival wave apparent velocity setting information; and the above-mentioned offset distance correction information is an offset distance correction quantity. According to the above-mentioned offset distance correction information and the above-mentioned setting information, the target seismic trace data corresponding to the above-mentioned second excitation point is corrected, including: determining the ratio of the above-mentioned offset distance correction quantity and the above-mentioned first arrival wave apparent velocity setting information as a first arrival time correction quantity; based on the first arrival time correction quantity, the seismic trace time in the target seismic trace data corresponding to the above-mentioned second excitation point is corrected to obtain corrected seismic trace data.

[0020] In a second aspect, embodiments of the present disclosure provide a display device of common receiver point gather seismic data. The display device comprises a receiving module, a grid construction module, a calculating module, a determining module, a correcting module and a display module. The receiving module is configured to receive setting information of seismic trace display parameters of an observation system. The grid construction module is configured to construct a regular grid for representing the relationship between positions of each shot point according to the setting information. The calculating module is configured to calculate theoretical coordinates of each shot point corresponding to the regular grid in the form of equidistant distribution. The determining module is configured to determine a first shot point which does not need to be corrected, a second shot point which needs to be corrected and corresponding offset distance correction information according to the theoretical coordinates, actual coordinates of each shot point under the regular grid and actual coordinates of a receiver point. The correcting module is configured to correct target seismic trace data corresponding to the second shot point according to the offset distance correction information and the setting information. The display module is configured to display seismic gather data in the observation system, wherein the seismic gather data comprises seismic trace data of the first shot point and corrected seismic trace data of the second shot point.

[0021] In a third aspect, embodiments of the present disclosure provide an electronic device. The electronic device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete mutual communication through the communication bus; the memory is configured to store a computer program; and the processor is configured to execute the program stored on the memory to implement the display method as described above.

[0022] In a fourth aspect, embodiments of the present disclosure provide a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the display method as described above.

[0023] The above technical solutions provided by the embodiments of the present disclosure have at least some or all of the following advantages:

[0024] By constructing a regular grid for representing the position relationship of each shot point according to the setting information of the seismic trace display parameters of the observation system, the regular grid is in the form of equidistant distribution between each shot point, the theoretical coordinates of other shot points in the regular grid can be determined according to the initial shot point, and the theoretical coordinates are the standard positions of the corresponding shot points in the equidistant display process of the common receiver gather seismic data. If there is a difference between the actual coordinates of a shot point and the theoretical coordinates, the shot point needs to be corrected for offset distance. The idea of offset distance correction is to correct the shot point to the grid point (the position corresponding to the theoretical coordinates) in the equidistant distribution, and then display the seismic traces in the equidistant manner. Through the correction processing, the problem of discontinuity of effective signals such as refraction waves and reflected waves in the display of common receiver gather seismic data can be effectively solved, which helps to improve the display effect of common receiver gather seismic data and meets the requirements of common receiver gather seismic data analysis. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the disclosure.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the accompanying drawings needed to be used in the embodiments or related description will be briefly introduced. Obviously, those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0027] Figure 1 The schematic diagram of the irregular scene of the common receiver gather data display caused by the actual position distribution of the shot points deviating from the theoretical position in the related art is schematically shown, wherein (a) is a schematic diagram of regular shot point distribution, (b) is a schematic diagram of the common receiver gather shown by the observation system of the regular shot point distribution, (c) is a schematic diagram of irregular shot point distribution, and (d) is a schematic diagram of the common receiver gather shown by the observation system of the irregular shot point distribution;

[0028] Figure 2 The flowchart of the display method of the common receiver gather seismic data according to the embodiments of the present disclosure is schematically shown;

[0029] Figure 3 The schematic diagram of the regular grid constructed according to the embodiments of the present disclosure is schematically shown;

[0030] Figure 4 The detailed implementation flowchart of step S230 according to the embodiments of the present disclosure is schematically shown;

[0031] Figure 5A schematic diagram of offset correction is shown according to an embodiment of the present disclosure;

[0032] Figure 6 A structural block diagram of a display device of common-receiver-point gather seismic data is shown according to an embodiment of the present disclosure; and

[0033] Figure 7 A structural block diagram of an electronic device is shown according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] To make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some but not all of the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

[0035] In the process of implementing the present disclosure, it is found that at least the following technical problems exist in the related art: In the display of common-receiver-point gather seismic data, each seismic trace of each shot point is usually displayed at equal intervals. However, in seismic acquisition construction, the distribution of shot points is usually irregular, which leads to poor continuity of the first arrival and effective reflection wave of each seismic trace in the common-receiver-point gather. If the common-receiver-point gather seismic data is displayed according to the current common-shot-point gather seismic data method, it is difficult to distinguish the first arrival and reflection wave, which is not conducive to seismic data analysis.

[0036] Figure 1 A schematic diagram of an irregular common-receiver-point gather data display scenario caused by the actual position distribution of shot points deviating from the theoretical position in the related art is shown, wherein (a) is a schematic diagram of regular shot point distribution, (b) is a schematic diagram of common-receiver-point gather presented by regular shot points in an observation system, (c) is a schematic diagram of irregular shot point distribution, and (d) is a schematic diagram of common-receiver-point gather presented by irregular shot points in an observation system. Figure 1 In (b) and (d) of the above, the echo waveform corresponding to each seismic trace is presented in the observation system, the horizontal coordinate represents the seismic trace number corresponding to different shot points, and the vertical coordinate represents the time corresponding to the echo waveform of each seismic trace.

[0037] Referring to Figure 1 As shown in (a) and (b) of the above, when the shot points are regularly distributed, the common-receiver-point gather seismic data display is regular. Figure 1As shown in (c) and (d), when the distribution of the shooting points is irregular, the common-receiver gather seismic data shows irregularity, for example, the 5th shooting point from left to right is offset, causing the 5th trace in the common-receiver gather to be lowered, thus causing the refraction wave and the reflected wave in the gather to be discontinuous, which brings difficulties to the analysis of the common-receiver gather seismic data.

[0038] Based on the discovery and analysis of the above problems, the embodiments of the present disclosure provide a display method, device, equipment and medium for common-receiver gather seismic data, by constructing a regular grid corresponding to the shooting points, correcting the offset shooting points to the grid points (theoretical positions) of the equidistant distribution, realizing the correction of the offset distance, and displaying the seismic trace data of each shooting point in the equidistant manner, which can effectively solve the problem of discontinuity of effective signals such as refraction wave and reflected wave in the display of common-receiver gather seismic data, help to improve the display effect of common-receiver gather seismic data, and meet the requirements of common-receiver gather seismic data analysis.

[0039] The first exemplary embodiment of the present disclosure provides a display method for common-receiver gather seismic data.

[0040] Figure 2 A flowchart of the display method for common-receiver gather seismic data according to the embodiments of the present disclosure is schematically shown.

[0041] Referring to Figure 2 As shown in the figure, the display method for common-receiver gather seismic data provided by the embodiments of the present disclosure includes the following steps: S210, S220, S230, S240, S250 and S260.

[0042] In step S210, the setting information of the seismic trace display parameters of the observation system is received.

[0043] In some embodiments, the setting information of the seismic trace display parameters includes but is not limited to the following: shooting line distance setting information Ay, shooting point distance setting information Ax, line number L0 of the starting shooting point, point number P0 of the starting shooting point, coordinates (east0, north0) of the starting shooting point, shooting line number increment setting information AL, shooting point number increment setting information AP, and first arrival wave apparent velocity setting information v.

[0044] Wherein, each shooting point and receiving point has a line number, a point number, and a measured planar coordinate, etc. These attributes are recorded in the trace header information of the seismic data trace. The coordinates (east0, north0) of the starting shooting point can be set based on the coordinate information recorded in the trace header information of the starting shooting point.

[0045] For example, the specific setting information is: the shot line distance setting information Ay is 200 m, the shot point distance setting information Ax is 40 m, the line number L0 of the initial shot point is 5220, the point number P0 of the initial shot point is 4324, the east0 (the horizontal coordinate, for example, the coordinate east in the exploration process) of the coordinate (east0, north0) of the initial shot point is 430560.2, the north0 (the vertical coordinate, for example, the coordinate north in the exploration process) of the coordinate (east0, north0) of the initial shot point is 4234559.5, the shot line number increment setting information AL is 2, the shot point number increment setting information AP is 1, and the first arrival wave apparent velocity setting information v is 2000 m / s.

[0046] The apparent velocity is the propagation velocity observed along the survey line direction, and is to regard the reflected wave propagating along the ray in the underground as the wave propagating along the ground survey line with the apparent velocity. In the embodiment, the first arrival wave apparent velocity setting information can be a reasonable range set by a person, and the first arrival wave apparent velocity setting information has a corresponding relationship with different ground surface types.

[0047] In step S220, a regular grid for representing the position relationship of each shot point is constructed according to the setting information.

[0048] The setting information used in step S220 includes: the shot line distance setting information Ay (for example, 200 m), the shot point distance setting information Ax (for example, 40 m), the line number L0 of the initial shot point, the point number P0 of the initial shot point, and the coordinate (east0, north0) of the initial shot point.

[0049] In step S220, a regular grid for representing the position relationship of each shot point is constructed according to the setting information, including:

[0050] The point number of the initial shot point is determined as the horizontal number of the grid starting point, and the line number of the initial shot point is determined as the vertical number of the grid starting point.

[0051] The shot point distance setting information is determined as the horizontal side length of the grid, and the shot line distance setting information is determined as the vertical side length of the grid.

[0052] The coordinate of the initial shot point is determined as the coordinate of the grid starting point.

[0053] The regular grid is constructed based on the grid starting point, the horizontal side length and the vertical side length of the grid.

[0054] Figure 3 A schematic diagram of the regular grid constructed according to the embodiment of the present disclosure is schematically shown.

[0055] For example, in the embodiment, the setting information is referred to as Figure 3As shown, the point number P0:4324 of the starting shot point is taken as the horizontal number of the grid starting point, the line number L0:5220 of the starting shot point is taken as the vertical number of the grid starting point, the shot point distance setting information Δx:40m is taken as the horizontal grid side length, the shot line distance setting information Δy:200m is taken as the vertical grid side length, and the coordinates (east0, north0) of the starting shot point are determined as the coordinates of the grid starting point. It should be understood that only part of the grid is shown in the regular grid in Figure 3 The grid can be extended to the right and upward according to actual needs.

[0056] In step S230, the theoretical coordinates of each shot point in the form of equal-interval distribution are calculated corresponding to the regular grid.

[0057] In some embodiments, in the process of performing step S230, the setting information of the seismic trace display parameter used includes shot line number increment setting information ΔL and shot point number increment setting information ΔP. Referring to Figure 3 As shown, in the regular grid, the point number and line number corresponding to each grid point are also shown according to the shot line number increment setting information ΔL (for example, 2) and the shot point number increment setting information ΔP (for example, 1).

[0058] Figure 4 A detailed implementation flowchart of step S230 according to an embodiment of the present disclosure is shown schematically.

[0059] Referring to Figure 4 As shown, in step S230, the theoretical coordinates of each shot point in the form of equal-interval distribution are calculated corresponding to the regular grid, including steps S410, S420, S430 and S440.

[0060] In step S410, for each shot point, the horizontal grid number of the current shot point from the grid starting point is calculated based on the point number of the current shot point, the point number of the starting shot point, and the shot point number increment setting information.

[0061] Here, in the actual execution process for each shot point, since the starting shot point has been taken as the grid starting point when the regular grid is constructed, the calculation of the theoretical coordinates can be performed only for the shot points other than the starting shot point, or the theoretical coordinates corresponding to the starting shot point can be set as the coordinates of the grid starting point by default.

[0062] In some embodiments, the horizontal grid number is represented as row, and the calculation expression is:

[0063] The horizontal grid number row=(point number P of the current shot point current- the point number P0 of the starting shot point) ÷ the shot point number increment setting information ΔP. (1)

[0064] For example, a certain shot point S is the current shot point, the shot point S corresponds to a line number L current is 5222, the point number P current is 4328, the plane coordinate east current is 430680.2, the plane coordinate north current is 4234759.5;

[0065] These shot points correspond to the same receiving point R, the receiving point R corresponds to a receiving point line number L1 is 5217, a point number P1 is 4297, a plane coordinate east1 is 430580.1, a plane coordinate north1 is 4234140.3.

[0066] In this embodiment, the horizontal grid number row of the current shot point can be calculated according to expression (1): row = (4328-4324) ÷ 1 = 4.

[0067] In step S420, based on the line number of the current shot point, the line number of the starting shot point and the shot line number increment setting information, the vertical grid number of the current shot point from the grid starting point is calculated.

[0068] In some embodiments, the vertical grid number is represented as col, and the calculation expression is:

[0069] The vertical grid number col of the current shot point = (the line number L current - the line number L0 of the starting shot point) ÷ the shot line number increment setting information ΔL. (2)

[0070] In the embodiment corresponding to the shot point S, the vertical grid number col of the current shot point can be calculated according to expression (2): col = (5222-5220) ÷ 2 = 1.

[0071] In step S430, according to the coordinates of the grid starting point, the horizontal grid number and the horizontal side length, the theoretical horizontal coordinate of the current shot point corresponding to the regular grid is determined.

[0072] In some embodiments, the calculation expression of the theoretical horizontal coordinate east* is:

[0073] The theoretical horizontal coordinate east* = the horizontal coordinate east0 of the grid starting point + the horizontal grid number row × the horizontal side length Δx. (3)

[0074] In the embodiment corresponding to the firing point S, the theoretical east coordinate east* of the firing point S corresponding to the regular grid can be calculated according to expression (3): east* = 430560.2 + 4 x 40 = 430720.2.

[0075] In step S440, the theoretical north coordinate north* of the current firing point corresponding to the regular grid is determined according to the coordinate of the grid starting point, the number of longitudinal grids and the longitudinal side length.

[0076] The theoretical east coordinate and the theoretical north coordinate constitute the theoretical coordinate.

[0077] In some embodiments, the calculation expression of the theoretical north coordinate north* is:

[0078] The theoretical north coordinate north* of the current firing point corresponding to the regular grid is determined according to the coordinate of the grid starting point, the number of longitudinal grids and the longitudinal side length.

[0079] In the embodiment corresponding to the firing point S, the theoretical north coordinate north* of the firing point S corresponding to the regular grid can be calculated according to expression (4): north* = 4234559.5 + 1 x 200 = 4234759.5.

[0080] In step S240, the first firing point without correction, the second firing point with correction and the corresponding offset distance correction information are determined according to the theoretical coordinate, the actual coordinate of each firing point under the regular grid and the actual coordinate of the receiving point.

[0081] The actual coordinate refers to the position coordinate corresponding to the shot point (firing point) and the receiver point (receiving point) in the exploration process.

[0082] In some embodiments, in step S240, the first firing point without correction, the second firing point with correction and the corresponding offset distance correction information are determined according to the theoretical coordinate, the actual coordinate of each firing point under the regular grid and the actual coordinate of the receiving point, including: for each firing point, determining whether the theoretical coordinate and the actual coordinate of the current firing point are consistent; in the case of consistency, determining that the current firing point is the first firing point; in the case of inconsistency, determining that the current firing point is the second firing point; for the second firing point, the offset distance correction amount is determined according to the actual coordinate, the theoretical coordinate of the second firing point and the actual coordinate of the receiving point.

[0083] In this context, if either the x-coordinate or y-coordinate of the actual coordinates of the current excitation point is inconsistent with the theoretical coordinates, it is considered that the theoretical and actual coordinates are inconsistent. For example, for the example excitation point S, the theoretical coordinates of excitation point S are (east*, north*) corresponding to (430720.2, 4234759.5); the actual coordinates of excitation point S are (east*, north*) corresponding to (430720.2, 4234759.5). current north current The corresponding values ​​are (430680.2, 4234759.5). By comparison, it can be seen that the actual x-coordinate of the excitation point S is inconsistent with the theoretical x-coordinate, while the actual y-coordinate is consistent with the theoretical y-coordinate. Therefore, the excitation point S can be determined as the second excitation point, and offset correction needs to be performed for the second excitation point.

[0084] In some embodiments, determining the offset correction amount based on the actual coordinates, theoretical coordinates, and actual coordinates of the second excitation point includes: determining the actual offset distance based on the actual coordinates of the second excitation point and the actual coordinates of the receiving point; determining the theoretical offset distance based on the theoretical coordinates of the second excitation point and the actual coordinates of the receiving point; and determining the difference between the actual offset distance and the theoretical offset distance as the offset correction amount.

[0085] Taking excitation point S as an example of the second excitation point, the actual offset of excitation point S is... M Satisfy the following expression:

[0086]

[0087] Theoretical offset of excitation point S * Satisfy the following expression:

[0088]

[0089] The offset correction Δoffset satisfies the following expression:

[0090] Δoffset = |offset M -offset * |, (7)

[0091] The values ​​of the excitation point S and the receiver point R: east current 430680.2, north current The values ​​are 4234759.5, east1 is 430580.1, north1 is 4234140.3, east* is 430720.2, and north* is 4234759.5. Substituting these values ​​into formulas (5)-(7), we obtain the offset. M =627.24, offset* = 635.06; offset = 7.82, and the actual offset distance is less than the theoretical offset distance.

[0092] In step S250, the target seismic trace data corresponding to the second shot point is corrected according to the offset distance correction information and the setting information.

[0093] Figure 5 A schematic diagram of the principle of offset distance correction according to an embodiment of the present disclosure is shown.

[0094] Referring to Figure 5 In the case where there is a second shot point deviating from the regular grid among the shot points on the shot line, as shown in FIG. 1, taking shot point S as an example of the second shot point, the offset distance correction amount calculated in step S240 can be used to correct the target seismic trace data corresponding to the second shot point.

[0095] The setting information includes first arrival wave apparent velocity setting information v. The offset distance correction information is an offset distance correction amount.

[0096] In step S250, the target seismic trace data corresponding to the second shot point is corrected according to the offset distance correction information and the setting information, including: determining the ratio of the offset distance correction amount to the first arrival wave apparent velocity setting information as a first arrival time correction amount; and correcting the seismic trace time in the target seismic trace data corresponding to the second shot point based on the first arrival time correction amount to obtain corrected seismic trace data.

[0097] For example, in the case where offset M > offset * , it is indicated that the actual offset distance is greater than the theoretical offset distance, and the correction needs to be implemented by subtracting the first arrival time correction amount from the seismic trace time of the target seismic trace data.

[0098] In the case where offset M < offset * , it is indicated that the actual offset distance is less than the theoretical offset distance, and the correction needs to be implemented by adding the first arrival time correction amount to the seismic trace time of the target seismic trace data.

[0099] In step S260, seismic trace gather data is displayed in the observation system, and the seismic trace gather data includes the seismic trace data of the first shot point and the corrected seismic trace data of the second shot point.

[0100] In the embodiment comprising the steps S210-S260, the regular grid for representing the position relationship of each shot point is constructed according to the setting information of the seismic trace display parameters of the observation system, the regular grid is in the form of equidistant distribution between each shot point, the theoretical coordinates of other shot points in the regular grid can be determined according to the initial shot point, the theoretical coordinates are the standard positions of the corresponding shot points in the equidistant display process of the common receiver gather seismic data, if the actual coordinates of a shot point are different from the theoretical coordinates, the offset correction of the corresponding shot point is needed, the idea of the offset correction is to correct the shot point to the grid point in the form of equidistant distribution (the position corresponding to the theoretical coordinates), and then display the seismic traces in the form of equidistant distribution, through the correction processing, the problem of discontinuity of effective signals such as refraction wave and reflection wave in the display of the common receiver gather seismic data can be effectively solved, which helps to improve the display effect of the common receiver gather seismic data and meets the requirement of the analysis of the common receiver gather seismic data.

[0101] The second exemplary embodiment of the present disclosure provides a display device of common receiver gather seismic data.

[0102] Figure 6 The structure block diagram of the display device of common receiver gather seismic data according to the embodiment of the present disclosure is schematically shown.

[0103] Referring to Figure 6 The display device 600 of common receiver gather seismic data provided by the embodiment of the present disclosure comprises a receiving module 601, a grid construction module 602, a calculation module 603, a determination module 604, a correction module 605 and a display module 606.

[0104] The receiving module 601 is used for receiving the setting information of the seismic trace display parameters of the observation system.

[0105] The grid construction module 602 is used for constructing the regular grid for representing the position relationship of each shot point according to the setting information.

[0106] The calculation module 603 is used for calculating the theoretical coordinates of each shot point corresponding to the regular grid in the form of equidistant distribution.

[0107] The determination module 604 is used for determining the first shot point without correction, the second shot point needing correction and the corresponding offset correction information according to the theoretical coordinates, the actual coordinates of each shot point in the regular grid and the actual coordinates of the receiver.

[0108] The correction module 605 is used for correcting the target seismic trace data corresponding to the second shot point according to the offset correction information and the setting information.

[0109] The display module 606 is configured to display the seismic trace data in the observation system, the seismic trace data including the seismic trace data of the first shot point and the corrected seismic trace data of the second shot point.

[0110] The details, advantages and the like of each of the embodiments included in the present embodiment can be referred to the description of the first embodiment, which will not be repeated here.

[0111] Any of the functional modules included in the display device 600 can be combined in one module, or any of the modules can be split into multiple modules. Alternatively, at least part of the functions of one or more of the modules can be combined with at least part of the functions of other modules, and implemented in one module. At least one of the functional modules included in the display device 600 can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on chip, a system on board, a system on package, an application specific integrated circuit (ASIC), or any other reasonable manner of integrating or packaging a circuit, or implemented by hardware or firmware, or implemented in any one of software, hardware and firmware or in a proper combination of any of them. Alternatively, at least one of the functional modules included in the display device 600 can be at least partially implemented as a computer program module which, when executed, can perform the corresponding functions.

[0112] A third exemplary embodiment of the present disclosure provides an electronic device.

[0113] Figure 7 A structural block diagram of the electronic device provided by the embodiments of the present disclosure is schematically shown.

[0114] Referring to Figure 7 As shown in the figure, the electronic device 700 provided by the embodiments of the present disclosure includes a processor 701, a communication interface 702, a memory 703 and a communication bus 704, wherein the processor 701, the communication interface 702 and the memory 703 complete communication with each other through the communication bus 704; the memory 703 is configured to store a computer program; the processor 701 is configured to execute the program stored on the memory to implement the display method of the common-receiving-point trace set seismic data as described above.

[0115] A fourth exemplary embodiment of the present disclosure also provides a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the display method of the common-receiving-point trace set seismic data as described above.

[0116] The computer readable storage medium can be included in the devices / apparatuses described in the above embodiments; it can also exist independently, and is not assembled into the devices / apparatuses. The computer readable storage medium described above bears one or more programs, when the one or more programs are executed, the method according to the embodiments of the present disclosure is implemented.

[0117] According to the embodiments of the present disclosure, the computer readable storage medium can be a non-volatile computer readable storage medium, for example, can include but is not limited to: a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any appropriate combination thereof. In the present disclosure, the computer readable storage medium can be any tangible medium that contains or stores a program, which can be used by or in connection with an instruction execution system, apparatus or device.

[0118] It should be noted that, in this document, the relationship terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0119] The above description is only a specific implementation of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A method of displaying common-receiver-point gather seismic data, characterized by, The method comprises the following steps: receiving setting information of seismic trace display parameters of an observation system; the setting information comprises first arrival apparent velocity setting information; constructing a regular grid for representing the position relationship of each shot point according to the setting information; calculating theoretical coordinates of each shot point in the form of equidistant distribution corresponding to the regular grid; determining a first shot point without correction, a second shot point requiring correction and a corresponding offset distance correction amount according to the theoretical coordinates, actual coordinates of each shot point and actual coordinates of a receiver point; comprising: for each shot point, determining whether the theoretical coordinates and the actual coordinates of the current shot point are consistent; in the case of consistency, determining that the current shot point is the first shot point; in the case of inconsistency, determining that the current shot point is the second shot point; for the second shot point, determining an actual offset distance according to the actual coordinates of the second shot point and the actual coordinates of the receiver point; determining a theoretical offset distance according to the theoretical coordinates of the second shot point and the actual coordinates of the receiver point; determining the offset distance correction amount as the difference between the actual offset distance and the theoretical offset distance; performing correction processing on target seismic trace data corresponding to the second shot point according to the offset distance correction amount and the setting information, comprising: determining the ratio of the offset distance correction amount to the first arrival apparent velocity setting information as a first arrival time correction amount; correcting the seismic trace time in the target seismic trace data corresponding to the second shot point based on the first arrival time correction amount to obtain corrected seismic trace data; displaying seismic trace gather data in the observation system, wherein the seismic trace gather data comprises seismic trace data of the first shot point and corrected seismic trace data of the second shot point.

2. The display method according to claim 1, wherein The setting information of the seismic trace display parameters comprises shot line distance setting information, shot point distance setting information, line number of a starting shot point, point number of the starting shot point and coordinates of the starting shot point; wherein, constructing a regular grid for representing the position relationship of each shot point according to the setting information comprises: determining the point number of the starting shot point as the horizontal number of a grid starting point, and determining the line number of the starting shot point as the vertical number of the grid starting point; determining the shot point distance setting information as the horizontal side length of the grid, and determining the shot line distance setting information as the vertical side length of the grid; determining the coordinates of the starting shot point as the coordinates of the grid starting point; constructing the regular grid based on the grid starting point, the horizontal side length and the vertical side length of the grid.

3. The display method according to claim 2, wherein The setting information of the seismic trace display parameters further comprises shot line number increment setting information and shot point number increment setting information; calculating theoretical coordinates of each shot point in the form of equidistant distribution corresponding to the regular grid comprises: for each shot point, calculating the horizontal grid number of the current shot point from the grid starting point based on the point number of the current shot point, the point number of the starting shot point and the shot point number increment setting information; calculating a longitudinal grid number of the current firing point from the grid start point based on the line number of the current firing point, the line number of the start firing point, and the firing line number increment setting information; determining a theoretical horizontal coordinate of the current firing point corresponding to the regular grid based on the coordinate of the grid start point, the horizontal grid number, and the horizontal side length; determining a theoretical vertical coordinate of the current firing point corresponding to the regular grid based on the coordinate of the grid start point, the longitudinal grid number, and the longitudinal side length; the theoretical horizontal coordinate and the theoretical vertical coordinate constitute the theoretical coordinate.

4. The display method of claim 3, wherein, the calculation expression of the horizontal grid number is: the horizontal grid number = (the point number of the current firing point - the point number of the start firing point) ÷ the firing point number increment setting information; the calculation expression of the longitudinal grid number is: the longitudinal grid number = (the line number of the current firing point - the line number of the start firing point) ÷ the firing line number increment setting information; the calculation expression of the theoretical horizontal coordinate is: the theoretical horizontal coordinate = the horizontal coordinate of the grid start point + the horizontal grid number × the horizontal side length; the calculation expression of the theoretical vertical coordinate is: the theoretical vertical coordinate = the vertical coordinate of the grid start point + the longitudinal grid number × the longitudinal side length.

5. A display device for co-receiver gather seismic data, characterized in that, comprising: a receiving module configured to receive setting information of seismic trace display parameters of an observation system; the setting information comprises: first arrival wave apparent velocity setting information; a grid construction module configured to construct a regular grid for representing position relationship of each firing point according to the setting information; a calculation module configured to calculate theoretical coordinates of each firing point corresponding to the regular grid in the form of equidistance distribution; a determination module configured to determine a first firing point without correction, a second firing point requiring correction, and a corresponding offset distance correction amount according to the theoretical coordinates, actual coordinates of each firing point in the regular grid, and actual coordinates of a receiving point, comprising: determining whether the theoretical coordinates and the actual coordinates of a current firing point are consistent for each firing point; determining the current firing point as the first firing point in the case of consistency; determining the current firing point as the second firing point in the case of inconsistency; determining an actual offset distance according to the actual coordinates of the second firing point and the actual coordinates of the receiving point; determining a theoretical offset distance according to the theoretical coordinates of the second firing point and the actual coordinates of the receiving point; determining a difference value between the actual offset distance and the theoretical offset distance as the offset distance correction amount; a correction module configured to correct target seismic trace data corresponding to the second firing point according to the offset distance correction amount and the setting information, comprising: determining a ratio of the offset distance correction amount to the first arrival wave apparent velocity setting information as a first arrival time correction amount; correcting a seismic trace time in the target seismic trace data corresponding to the second firing point based on the first arrival time correction amount to obtain corrected seismic trace data; a display module configured to display seismic gather data in the observation system, the seismic gather data including seismic trace data of the first shot point and corrected seismic trace data of the second shot point.

6. An electronic device, comprising: The system comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; The memory is configured to store a computer program; The processor is configured to execute the program stored in the memory to implement the display method in any one of claims 1-4.

7. A computer-readable storage medium having stored thereon a computer program, characterized in that The computer program is executed by the processor to implement the display method in any one of claims 1-4.

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