Method and device for intelligently laying uniformly-covered seismic sources and medium

Abstract

The invention discloses an intelligent layout method and equipment for uniformly-covered seismic sources and a medium, and belongs to the technical field of seismic data acquisition in oil exploration. The method comprises the following steps: selecting a first batch of seismic source points from intersection points of road vector data and a three-dimensional grid based on theoretical observation system data, performing encrypted layout according to the requirement of the number of coverage times to obtain a second batch of seismic source points, and laying seismic sources at coordinates of the seismic source points, thereby completing intelligent layout of the seismic sources with uniform coverage. The apparatus and medium of the present invention can store and execute a computer program based on the method. By applying the three-dimensional grid based on theoretical observation system data, the seismic source points are arranged twice, the aim of efficiently, accurately and intelligently arranging the seismic source points in a large obstacle area is achieved while the uniformity of the number of coverage times is ensured, and the method is suitable for three-dimensional seismic exploration of various complex terrains.

Description

Technical Field

[0001] The invention belongs to the technical field of oil exploration seismic data acquisition, and relates to a surface multiple wave suppression method, in particular to a uniformly covered seismic source intelligent layout method, equipment and medium. Background Art

[0002] At present, in onshore seismic exploration, three-dimensional seismic exploration often adopts the method of well-seismic joint mining. Due to the differences in terrain conditions in different work areas, when well-seismic joint mining encounters terrain conditions such as the Sichuan Basin, where there are dense surface obstacles and large obstacle areas, the conventional excitation point offset can no longer meet the design requirements of the observation system. The complex terrain conditions make it difficult to arrange the source in well-seismic joint mining.

[0003] In the past, the deployment of seismic sources in the Sichuan Basin work area was carried out through detailed field surveys, collecting road conditions in the work area, combining the feasibility of controllable source construction, and using grids of different sizes from large to small along the direction of the road according to the simulation results of the number of coverages. However, with the advancement of urbanization, the road network is becoming increasingly complex, and the manual deployment of seismic sources along the road is obviously inefficient. In addition, when faced with large-scale road networks with staggered bifurcations and changing directions, manual deployment also exacerbates the problem of uneven coverage times, making it difficult to meet the needs of quality and efficiency improvement. Summary of the invention

[0004] One object of the present invention is to provide a method for intelligently arranging seismic sources with uniform coverage, which determines the coordinates of the seismic source points by the intersection of the road vector and the three-dimensional grid in the theoretical observation system data, thereby solving the problems of low working efficiency and uneven coverage in the arrangement of seismic source points;

[0005] Another object of the present invention is to provide equipment and media based on the above-mentioned method of intelligent deployment of seismic sources with uniform coverage, so as to achieve the purpose of storing and executing computer programs based on the method.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A method for intelligently arranging seismic sources with uniform coverage, which comprises selecting a first batch of seismic source points from the intersection of road vector data and a three-dimensional grid based on theoretical observation system data, encrypting the arrangement according to the number of coverage requirements, obtaining a second batch of seismic source points, and arranging seismic sources at the coordinates of the first batch of seismic source points and the second batch of seismic source points, thereby completing the intelligent arrangement of seismic sources with uniform coverage;

[0008] The projection intervals of two adjacent first-batch seismic source points in the direction of the shot line are the same;

[0009] The encrypted layout is to add seismic source points at the intervals between adjacent first-batch seismic source points.

[0010] As a limitation, the following steps are included in sequence:

[0011] S1. Obtain road vector data and 3D grid

[0012] Use contour tracing technology to vectorize roads and obtain road vector data;

[0013] Using the shot point information and receiving point information in the theoretical observation system data, a three-dimensional grid consisting of a plurality of mutually parallel shot line direction lines and a plurality of mutually parallel receiving line direction lines is established;

[0014] Among them, the direction line of the shooting line is parallel to the direction of the shooting line, the direction line of the receiving line is parallel to the direction of the receiving line, and the direction line of the shooting line and the direction line of the receiving line are perpendicular to each other;

[0015] The distance between two adjacent gun line direction lines is not greater than the receiving point distance;

[0016] The distance between two adjacent receiving line direction lines is not greater than the shot point distance;

[0017] Among them, the spacing between two adjacent shot line direction lines and the spacing between two adjacent receiving line direction lines, that is, the unit grid width of the three-dimensional grid, can be customized according to needs:

[0018] The distance between two adjacent gun line direction lines is 1, 1 / 2, or 1 / 4 of the receiving point distance, etc.;

[0019] The distance between two adjacent receiving line direction lines is 1 times, 1 / 2 times or 1 / 4 times the shot point distance, etc.;

[0020] S2. Obtain the first batch of earthquake source points

[0021] Import the road vector data into the three-dimensional grid, and select the intersection of the specific receiving line direction line and the road vector data as the first batch of source points;

[0022] Wherein, the specific receiving line direction line is a receiving line direction line whose spacing between two adjacent lines is the same as the shot point spacing;

[0023] S3. Obtain the second batch of earthquake source points

[0024] Carry out coverage simulation. If the coverage does not meet the requirements of the theoretical observation system, the second batch of source points are obtained by reducing the spacing of the specific receiving line direction lines to 1 / 4-1 / 2 (i.e. 25%-50%) of the shot point spacing, and encrypting the layout of the source points.

[0025] S4. Get the coordinates of the earthquake source point

[0026] The coordinates of the first batch of seismic source points and the second batch of seismic source points are calculated using a theoretical observation system, and seismic sources are arranged at the coordinates, thus completing intelligent arrangement of seismic sources with uniform coverage.

[0027] As a further limitation, the encrypted layout may also select the intersection points of specific shot line direction lines and road vector data as the second batch of epicenter points;

[0028] The specific gun line direction line is a gun line direction line where the distance between two adjacent lines is smaller than the gun point distance.

[0029] Preferably, the spacing between adjacent specific shot line direction lines is 25-50% of the shot point spacing.

[0030] Preferably, the shot point spacing is an integer multiple of a unit grid width in the three-dimensional grid, and more preferably, the shot point spacing is 40 m.

[0031] The present invention also provides a device for intelligent deployment of seismic sources with uniform coverage, which is an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, and is characterized in that the processor implements the above-mentioned method for intelligent deployment of seismic sources with uniform coverage when executing the computer program.

[0032] The present invention also provides a computer-readable storage medium storing a computer program for executing the above-mentioned method for intelligent deployment of seismic sources with uniform coverage.

[0033] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0034] The method for intelligently laying out seismic sources with uniform coverage provided by the present invention makes full use of road vector data and theoretical observation system data, selects the intersection of a specific receiving line direction line and road vector data as the first batch of seismic source points, maintains the consistency of the laying direction with the direction of the original theoretical shot point, and avoids the situation where the coverage times are strip-shaped and uneven; when the first batch of seismic source points cannot meet the requirement of uniform coverage times, the spacing between specific receiving lines is reduced, and the seismic source points are densely laid out to improve the uniformity of coverage times;

[0035] Due to the complex terrain and the winding urban roads, the direction of the road vector also changes after vectorization. The first batch of source points on the road closer to the direction of the gun line are densely distributed, which contributes more to the coverage times. The first batch of source points on the road with a larger angle with the direction of the gun line are sparsely distributed, which contributes less to the coverage times. When the overall requirement of uniform coverage times cannot be met, the present invention can also select the intersection of a specific gun line direction line and the road vector data as the second batch of source points to encrypt the layout of the source points, thereby further improving the uniformity of coverage times.

[0036] The present invention utilizes the theoretical observation system to intelligently calculate the coordinates of the earthquake source point, and can specifically and quickly calculate the coordinates of the earthquake source points along the road in batches, thus significantly improving work efficiency.

[0037] The computer-readable storage medium and device of the present invention include a computer program for running a method for intelligently placing seismic sources with uniform coverage, and are suitable for efficiently, accurately and intelligently placing seismic source points in large obstacle areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The high-definition image data diagram in Embodiment 1 of the present invention;

[0039] Figure 2 The road vector data in Embodiment 1 of the present invention, wherein the line is a road vector;

[0040] Figure 3 The road vector data for the deployment of the seismic source in Embodiment 1 of the present invention, wherein the four lines are road vectors;

[0041] Figure 4 This is a schematic diagram of obtaining the first batch of earthquake source points in Example 1 of the present invention, wherein the black dots are the first batch of earthquake source points;

[0042] Figure 5 This is a schematic diagram of obtaining the second batch of earthquake source points in Example 1 of the present invention. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below by specific examples. It should be understood that the described examples are only used to explain the present invention, and are not intended to limit the present invention.

[0044] Example 1 A method for intelligently deploying seismic sources with uniform coverage

[0045] This embodiment is a method for intelligently deploying seismic sources with uniform coverage. This method is used to deploy seismic sources in a certain work area in the Sichuan Basin. The specific operation steps of this method are as follows:

[0046] S1. Obtain road vector data and 3D grid

[0047] The contour extraction technology is used to extract high-definition image data of a work area in the Sichuan Basin, such as Figure 1 , perform road vectorization and obtain road vector data, such as Figure 2 ;

[0048] Using the theoretical observation system data, a three-dimensional grid composed of multiple shot line direction lines and receiving line direction lines is obtained. The minimum cell size of the three-dimensional grid is 20m×20m, that is, the directions of the shot line direction lines and the receiving line direction lines are perpendicular to each other; the multiple shot line direction lines are parallel to each other, and the interval between adjacent shot line direction lines is 20m; the multiple receiving line direction lines are also parallel to each other, and the interval between adjacent receiving line direction lines is 20m;

[0049] S2. Obtain the first batch of earthquake source points

[0050] Import the 4 road vector data into the 3D grid, such as Figure 3 , the direction line of the firing line is the oblique line in the northwest direction, the direction line of the receiving line is the oblique line in the northeast direction, the firing point position is the position of the square point in the figure, and the firing point distance is 40m;

[0051] The first receiving line direction line in the upper left corner of the three-dimensional grid is taken as the first specific receiving line direction line, and the receiving line direction line 40m away from it is taken as the second receiving line direction line. And so on, all specific receiving line direction lines are determined. The intersection of the specific receiving line direction line and the road vector data is the first batch of source points. Figure 3 The black dots in the middle are the first earthquake source points;

[0052] S3. Obtain the second batch of earthquake source points

[0053] The coverage times simulation was carried out and the results showed that the coverage times did not meet the requirements of the theoretical observation system. Figure 3 It can also be seen that the first batch of source points on the two roads with larger angles to the direction of the gun line are sparsely distributed, so it is necessary to encrypt the layout of the source points;

[0054] First, by reducing the spacing of the specific receiving line direction lines to 50% of the shot point spacing, that is, 20m, the source points are densely arranged to obtain new source points;

[0055] Secondly, due to the large angle between the two roads and the direction of the gun line, the number of new source points still does not meet the requirements of the theoretical observation system, so the dense layout of the source points will continue;

[0056] The first shot line in the upper right corner of the three-dimensional grid is taken as the first specific shot line direction line, and the shot line direction line 20m away from it is taken as the second shot line direction line, and so on, to determine all specific shot line direction lines, and the intersection of the specific shot line direction line and the road vector data is the newly added source point;

[0057] All newly added epicenters are from the second batch of epicenters, such as Figure 4 The first and second batch of earthquake source points are Figure 4 In the middle, they are indicated by black dots;

[0058] After simulation of coverage times, the coverage times of earthquake source points have met the requirements of theoretical observation system.

[0059] S4. Get the coordinates of the earthquake source point

[0060] The coordinates of the first batch of seismic source points and the second batch of seismic source points are calculated using a theoretical observation system, and seismic sources are arranged at the coordinates, thus completing intelligent arrangement of seismic sources with uniform coverage.

[0061] In another embodiment, since two new seismic source points appear in one minimum cell, in order to prevent the seismic source points from being too densely arranged and causing unnecessary waste of resources, the seismic source points intersecting with the specific gun line direction line are selected to be removed;

[0062] In other embodiments, reducing the spacing between specific receiving line directions to 25% or 30% of the shot point spacing can also achieve intelligent deployment of seismic sources with uniform coverage.

[0063] The method for intelligently arranging seismic sources with uniform coverage of the present invention can avoid the situation where the coverage times are strip-shaped and uneven; when the first batch of seismic source points cannot meet the requirement of uniform coverage times, the seismic source points are densely arranged by reducing the spacing between specific receiving lines to improve the uniformity of coverage times; and in the case where the angle between the road and the direction of the gun line is large, the intersection of the specific gun line direction line and the road vector data is obtained as a new seismic source point, and the dense arrangement of the seismic source points is further realized, which significantly improves the uniformity of coverage times.

[0064] Example 2: Intelligent deployment method of seismic sources with uniform coverage

[0065] This embodiment is another method for intelligently arranging seismic sources with uniform coverage. This method is used to arrange seismic sources in a work area in the Sichuan Basin. The method is basically the same as that in Embodiment 1. The difference is that in the road vector data, the angle between the road direction and the direction of the shot line is small. Therefore, the requirement of uniform coverage can be met by only reducing the spacing between the specific receiving line direction lines in the dense arrangement, and there is no need to add a new seismic source point through the specific shot line direction line.

[0066] The specific steps are as follows:

[0067] S1. Obtain road vector data and 3D grid

[0068] The contour tracking technology is used to analyze the high-definition image data of a work area in the Sichuan Basin. Figure 1 , perform road vectorization and obtain road vector data, such as Figure 2 ;

[0069] Using the theoretical observation system data, a three-dimensional grid consisting of multiple shot line direction lines and receiving line direction lines is obtained. The minimum cell size of the three-dimensional grid is 20m×20m, that is, the shot line direction lines and the receiving line direction lines are perpendicular to each other; the multiple shot line direction lines are parallel to each other, and the interval between adjacent shot line direction lines is 20m; the multiple receiving line direction lines are also parallel to each other, and the interval between adjacent receiving line direction lines is 20m;

[0070] S2. Obtain the first batch of earthquake source points

[0071] Import the four road vector data into the three-dimensional grid. The direction of the shot line is the northwest oblique line, the direction of the receiving line is the northeast oblique line, the shot point position is the position of the square point in the figure, and the shot point distance is 40m.

[0072] The first receiving line in the upper left corner of the three-dimensional grid is taken as the first specific receiving line direction line, and the receiving line direction line 40m away from it is taken as the second receiving line direction line, and so on, to determine all the specific receiving line direction lines, and the intersection of the specific receiving line direction line and the road vector data is the first batch of source points;

[0073] S3. Obtain the second batch of earthquake source points

[0074] The simulation of coverage times showed that the coverage times did not meet the requirements of the theoretical observation system, so it was necessary to encrypt the layout of the earthquake source points.

[0075] By reducing the spacing of the specific receiving line direction lines to 40% of the shot point spacing, i.e. 16m, the focal points were densely arranged to obtain the second batch of focal points;

[0076] After simulation of coverage times, the coverage times of earthquake source points have met the requirements of theoretical observation system.

[0077] S4. Get the coordinates of the earthquake source point

[0078] The coordinates of the first batch of seismic source points and the second batch of seismic source points are calculated using a theoretical observation system, and seismic sources are arranged at the coordinates, thus completing intelligent arrangement of seismic sources with uniform coverage.

[0079] Embodiment 3 A computer device

[0080] This embodiment provides a computer device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, so as to implement the method for intelligent deployment of seismic sources with uniform coverage of Embodiment 1.

[0081] The memory is used to store non-temporary computer-readable instructions. Specifically, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may, for example, include random access memory (RAM) and / or cache memory (cache), etc. The non-volatile memory may, for example, include read-only memory (ROM), hard disk, flash memory, etc.

[0082] The processor may be a central processing unit (CPU) or other forms of processing units with data processing capability and / or instruction execution capability, and may control other components in the electronic device to perform desired functions. The processor is used to run the computer-readable instructions stored in the memory.

[0083] Those skilled in the art should be able to understand that in order to solve the technical problem of how to obtain a good user experience, the present embodiment may also include well-known structures such as a communication bus and an interface, and these well-known structures should also be included in the protection scope of the present disclosure.

[0084] For detailed description of this embodiment, reference may be made to the corresponding descriptions in the aforementioned embodiments, which will not be repeated here.

[0085] Embodiment 4 A computer readable storage medium

[0086] This embodiment provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the method for intelligent deployment of seismic sources with uniform coverage of embodiment 1 is implemented.

[0087] The computer-readable storage medium stores non-transitory computer-readable instructions. When the non-transitory computer-readable instructions are executed by a processor, all or part of the steps of the above-mentioned methods of various embodiments are executed.

[0088] The above-mentioned computer-readable storage media include, but are not limited to: optical storage media (e.g., CD-ROM and DVD), magneto-optical storage media (e.g., MO), magnetic storage media (e.g., magnetic tape or mobile hard disk), media with built-in rewritable non-volatile memory (e.g., memory card) and media with built-in ROM (e.g., ROM box).

[0089] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A method for intelligent deployment of seismic sources with uniform coverage, characterized in that: It selects the first batch of seismic source points from the intersection of road vector data and the three-dimensional grid based on theoretical observation system data, and performs dense layout according to the coverage times requirement to obtain the second batch of seismic source points, and arranges seismic sources at the coordinates of the first batch of seismic source points and the second batch of seismic source points, thus completing the intelligent layout of seismic sources with uniform coverage; The projection intervals of two adjacent first-batch seismic source points in the direction of the shot line are the same; The encrypted layout is to add seismic source points at the intervals between adjacent first-batch seismic source points.

2. The method for intelligent deployment of seismic sources with uniform coverage according to claim 1, characterized in that: The process includes the following steps: S1. Obtain road vector data and 3D grid Use contour extraction technology to vectorize roads and obtain road vector data; Using the shot point information and receiving point information in the theoretical observation system data, a three-dimensional grid consisting of a plurality of mutually parallel shot line direction lines and a plurality of mutually parallel receiving line direction lines is established; Among them, the direction line of the shooting line is parallel to the direction of the shooting line, the direction line of the receiving line is parallel to the direction of the receiving line, and the direction line of the shooting line and the direction line of the receiving line are perpendicular to each other; The distance between two adjacent gun line direction lines is not greater than the receiving point distance; The distance between two adjacent receiving line direction lines is not greater than the shot point distance; S2. Obtain the first batch of earthquake source points Import the road vector data into the three-dimensional grid, and select the intersection of the specific receiving line direction line and the road vector data as the first batch of source points; Wherein, the specific receiving line direction line is a receiving line direction line whose spacing between two adjacent lines is the same as the shot point spacing; S3. Obtain the second batch of earthquake source points Carry out coverage simulation. If the coverage does not meet the requirements of the theoretical observation system, the second batch of source points are obtained by reducing the spacing of the specific receiving line direction lines to 1 / 4-1 / 2 of the shot point spacing, and encrypting the layout of the source points. S4. Get the coordinates of the earthquake source point The coordinates of the first batch of seismic source points and the second batch of seismic source points are calculated using a theoretical observation system, and seismic sources are arranged at the coordinates, thus completing intelligent arrangement of seismic sources with uniform coverage.

3. The method for intelligent deployment of seismic sources with uniform coverage according to claim 2, characterized in that: The encrypted layout may also select the intersection of a specific gun line direction line and road vector data as the second batch of epicenter points; The specific gun line direction line is a gun line direction line where the distance between two adjacent lines is smaller than the gun point distance.

4. The method for intelligent deployment of seismic sources with uniform coverage according to claim 2 or 3, characterized in that: The shot point spacing is an integer multiple of the unit grid width in the three-dimensional grid.

5. An intelligent deployment device for seismic sources with uniform coverage, characterized in that: An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for intelligent deployment of seismic sources with uniform coverage as described in any one of claims 1 to 4 when executing the computer program.

6. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program for executing the method for intelligent deployment of seismic sources with uniform coverage as described in any one of claims 1 to 4.

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