Quantitative evaluation method and system for seismic data cannon first arrival information quality

Abstract

The invention belongs to the technical field of petroleum seismic exploration and acquisition, and particularly relates to a seismic data cannon first arrival information quality quantitative evaluation method and system, and the method comprises the steps: firstly analyzing a seismic observation system, and determining the effective total shot number of seismic data; carrying out cannon first arrival pickup on the seismic data to obtain cannon first arrival information; determining the first arrival pickup effective rate of the seismic data according to the effective total number of shots and the first arrival information of the large shots; and finally, determining a threshold value of the first arrival pickup efficiency, and evaluating the first arrival information of the seismic data cannon according to the threshold value. According to the method, reliable data is provided for subsequent surface stratum chromatography inversion and static correction calculation based on first arrival information based on high-efficiency quantitative evaluation of seismic data first arrival pickup efficiency and seismic data first arrival information quality after automatic pickup of the first arrival information of the cannon, and the seismic data processing efficiency can be further improved; the treatment period is shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum seismic exploration and acquisition, and in particular relates to a method and system for quantitatively evaluating the quality of seismic data cannon first-arrival information. Background Art

[0002] In recent years, with the development of seismic exploration and acquisition technology, the amount of seismic data is very large. In the process of seismic data processing, the technical methods of seismic data first arrival picking have made great progress, especially for low signal-to-noise ratio seismic data, based on data shaping, artificial intelligence deep learning and other technologies, the first arrival information of seismic data can be picked up as much as possible. However, there are few quantitative evaluation methods for whether the picked first arrival information meets the needs of subsequent applications. At present, in the process of seismic data first arrival picking and application, the quality control of seismic data first arrival information is mainly carried out through macroscopic inspection of the intersection diagram of shot offset and recording time, and the optimization of large-scale first arrival information through human-computer interaction. However, in the face of massive data, this method is inefficient and cannot perform quantitative evaluation of large-scale first arrival information.

[0003] The prior art proposes a method for improving the accuracy of picking up the first arrival of a single shot seismic record and a data evaluation method, by excluding the energy anomaly track and the transmission error track in the single shot record; starting from the first boundary, taking the continuous M tracks as a sliding unit, sliding one by one to the second boundary, and recording the coordinates of the middle track when the energy in the sliding unit is the largest; according to the coordinates, re-obtaining the offset distance and the theoretical first arrival information of the cannon; extending the theoretical first arrival information of the cannon by 300 to 500ms along the time direction to obtain the first time window, taking the N continuous sampling points starting from the top of the first time window as the first unit, sliding along the time direction until the bottom of the first time window, and obtaining the actual first arrival information of the cannon. The evaluation method is to pick up the actual first arrival information of the cannon by using the above-mentioned picking method in the process of evaluating seismic data. The main purpose of this method is to improve the accuracy of picking up the first arrival of a single shot seismic record, and it is necessary to exclude the energy anomaly track and the transmission error track individually and independently calculate each actual first arrival information of the cannon. The process is relatively cumbersome and it is impossible to evaluate a large number of data in a short time. Summary of the invention

[0004] In view of the above problems, the present invention provides a method for quantitatively evaluating the quality of first-arrival information of seismic data cannon, which can achieve efficient quality control of the first-arrival information quality and improve the reliability of data for subsequent near-surface layer tomography inversion and static correction calculation based on the first-arrival information. The specific technical solution is as follows:

[0005] The present invention proposes a method for quantitatively evaluating the quality of first arrival information of seismic data cannon, comprising the following steps:

[0006] Analyze the seismic observation system and determine the total effective shot number of the seismic data;

[0007] Performing first arrival detection on the seismic data to obtain first arrival information;

[0008] Determine the first arrival picking efficiency of the seismic data according to the total effective shot number and the first arrival information of the shot;

[0009] A threshold value of the first arrival picking efficiency is determined, and the seismic data cannon first arrival information is evaluated according to the threshold value.

[0010] Furthermore, analyzing the seismic observation system and determining the total effective shot number of the seismic data includes the following steps:

[0011] Obtaining the shot lines, detection lines, shot points and receiving points in the seismic observation system, and clarifying the receiving relationship between the shot points and receiving points;

[0012] Count the number of all shot points and calculate the total number of received channels corresponding to each shot point;

[0013] It is determined whether the receiving point corresponding to each shot point meets the receiving relationship, and the shot points that do not meet the receiving relationship are removed. The number of remaining shot points is the total effective shot number of the seismic data.

[0014] Furthermore, the step of performing cannon first arrival picking on the seismic data to obtain cannon first arrival information comprises the following steps:

[0015] Performing preliminary artillery first arrival information picking for all seismic data in the seismic data;

[0016] Based on the preliminary cannon first arrival information, an intersection diagram of the cannon first arrival information and the offset is drawn, and the cannon first arrival information is screened according to the intersection diagram to obtain accurate cannon first arrival information.

[0017] Furthermore, the cannon first arrival information is filtered according to the intersection graph as follows:

[0018] The first arrival information of the cannons concentrated in the intersection diagram is kept unchanged, and the first arrival information of the cannons outside the concentrated distribution in the intersection diagram is interactively modified and the abnormal values ​​are deleted.

[0019] Furthermore, the cannon first arrival information is the recording time corresponding to the first valid amplitude value recorded in the seismic data.

[0020] Further, determining the first arrival picking efficiency of the seismic data according to the effective total shot number and the first arrival information of the shot comprises the following steps:

[0021] Calculate the number of valid picked-up traces for each shot in the seismic data, where the number of valid picked-up traces is the total number of traces that accurately pick up the first arrival information of the shot in each common shot line record;

[0022] The ratio of the number of effective picked traces for each shot in the seismic data to the total number of traces for each shot is calculated, and the ratio is the first arrival picking efficiency.

[0023] Furthermore, evaluating the first arrival information of the seismic data cannon according to the threshold value includes the following steps:

[0024] Draw a three-dimensional plane map according to all first arrival picking efficiencies in the seismic data;

[0025] The quality of picking up the cannon first arrival information of the seismic data is evaluated with reference to the three-dimensional plane diagram.

[0026] Furthermore, the evaluation of the quality of picking up the first arrival information of the seismic data with reference to the three-dimensional plane map is specifically as follows:

[0027] Determine the first arrival picking efficiency and the threshold value in the seismic data to be evaluated;

[0028] If the first arrival picking efficiency is greater than or equal to the threshold value, the first arrival picking efficiency is subjected to near-surface tomographic inversion and static correction calculation;

[0029] If the first arrival pickup efficiency is less than the threshold value, the first arrival information of the cannon is picked up again.

[0030] Furthermore, the threshold value is set based on experience.

[0031] In a second aspect, the present invention proposes a system for quantitatively evaluating the quality of first arrival information of seismic data cannon, comprising:

[0032] An analysis unit, used for analyzing the seismic observation system and determining the total effective shot number of the seismic data;

[0033] A picking unit, used for performing cannon first arrival picking on the seismic data to obtain cannon first arrival information;

[0034] A determination unit, configured to determine the first arrival picking efficiency in the seismic data according to the total effective shot number and the first arrival information of the shot;

[0035] The evaluation unit is used to determine the threshold value of the first arrival picking efficiency and evaluate the first arrival information of the seismic data cannon according to the threshold value.

[0036] Furthermore, the analyzing unit analyzes the seismic observation system and determines the total effective shot number of the seismic data, including the following steps:

[0037] Obtain the shot lines, detection lines, shot points and receiving points in the observation system, and clarify the receiving relationship between the shot points and receiving points;

[0038] Count the number of all shot points and calculate the total number of received channels corresponding to each shot point;

[0039] It is determined whether the receiving point corresponding to each shot point meets the receiving relationship, and the shot points that do not meet the receiving relationship are removed. The number of remaining shot points is the total effective shot number of the seismic data.

[0040] Furthermore, the picking unit performs cannon first arrival picking on the seismic data to obtain cannon first arrival information, including the following steps:

[0041] Performing preliminary artillery first arrival information picking for all seismic data in the seismic data;

[0042] Based on the preliminary cannon first arrival information, an intersection diagram of the cannon first arrival information and the offset is drawn, and the cannon first arrival information is screened according to the intersection diagram to obtain accurate cannon first arrival information.

[0043] Furthermore, the picking unit selects the cannon first arrival information according to the intersection graph as follows:

[0044] The first arrival information of the cannons concentrated in the intersection diagram is kept unchanged, and the first arrival information of the cannons outside the concentrated distribution in the intersection diagram is interactively modified and the abnormal values ​​are deleted.

[0045] Furthermore, the cannon first arrival information is the recording time corresponding to the first valid amplitude value recorded in the seismic data.

[0046] Further, the determining unit determines the first arrival picking efficiency of the seismic data according to the effective total shot number and the first arrival information of the shot, including the following steps:

[0047] Calculate the number of valid picked-up traces for each shot in the seismic data, where the number of valid picked-up traces is the total number of traces that accurately pick up the first arrival information of the shot in each common shot line record;

[0048] The ratio of the number of effective picked traces for each shot in the seismic data to the total number of traces for each shot is calculated, and the ratio is the first arrival picking efficiency.

[0049] Furthermore, the evaluation unit evaluates the seismic data cannon first arrival information according to the threshold value, including the following steps:

[0050] Draw a three-dimensional plane map according to all first arrival picking efficiencies in the seismic data;

[0051] Furthermore, the evaluation unit evaluates the seismic data cannon first arrival information according to the threshold value specifically as follows:

[0052] Determine the first arrival picking efficiency and the threshold value in the seismic data to be evaluated;

[0053] If the first arrival picking efficiency is greater than or equal to the threshold value, the first arrival picking efficiency is subjected to near-surface tomographic inversion and static correction calculation;

[0054] If the first arrival pickup efficiency is less than the threshold value, the first arrival information of the cannon is picked up again.

[0055] Furthermore, the threshold value is set based on experience.

[0056] In a third aspect, the present invention provides an electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0057] Memory for storing computer programs;

[0058] The processor is used to implement the quantitative evaluation method of the quality of the first arrival information of the seismic data cannon when executing the program stored in the memory.

[0059] In a fourth aspect, the present invention proposes a computer-readable storage medium storing a computer program, which, when executed, executes the method for quantitatively evaluating the quality of first-arrival information of seismic data.

[0060] Beneficial effects of the present invention:

[0061] The present invention realizes efficient quantitative evaluation of the quality of the first arrival information of seismic data by picking up effective parameters based on the first arrival of seismic data after the first arrival information of the cannon is automatically picked up, thereby improving reliable data for subsequent near-surface layer tomography inversion and static correction calculation based on the first arrival information, and further improving the efficiency of seismic data processing and shortening the processing cycle.

[0062] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0064] Figure 1 A flowchart of a method for quantitatively evaluating the quality of first arrival information of seismic data proposed in an embodiment of the present invention is shown;

[0065] Figure 2 It shows the effective plane diagram of the first arrival picking of the cannon of the seismic data in the work area in the embodiment of the present invention;

[0066] Figure 3 A histogram showing the efficiency of first arrival picking of the cannon of seismic data in the work area according to an embodiment of the present invention is shown;

[0067] Figure 4 A schematic diagram of the framework of a system for quantitatively evaluating the quality of first-arrival information of seismic data proposed in an embodiment of the present invention is shown;

[0068] Figure 5 An exemplary structural diagram of an electronic device for quantitatively evaluating the quality of first-arrival information of seismic data proposed in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] The present invention proposes a seismic data first-arrival picking efficiency parameter and calculation method, and further realizes efficient quantitative evaluation of the quality of seismic data first-arrival picking based on the parameter, thereby ensuring the reliability of seismic data cannon first-arrival picking, and laying the foundation for the subsequent near-surface tomography inversion and static correction calculation based on cannon first-arrival information. The specific technical solution is as follows: Figure 1 As shown, the following steps are included:

[0071] S1: Analyze the seismic observation system and determine the total effective shot number of the seismic data;

[0072] The specific steps include:

[0073] Analyze the design of the seismic observation system, obtain the shot lines, detection lines and shot points, and clarify the receiving relationship between the shot points and receiving points;

[0074] Count the number of all shot points and calculate the total number of received channels corresponding to each shot point;

[0075] It is determined whether the receiving point corresponding to each shot point meets the receiving relationship. The number of remaining shot points after removing the shot points that do not meet the receiving relationship is the total effective shot number of the seismic data.

[0076] It should be noted that the total number of effective shots is the number of effective shot points, which refers to the number of shot points that satisfy the receiving relationship between the shot points and the receiving points. The seismic observation system refers to the need to continuously track the seismic waves of each interface in order to find out the underground structure. Therefore, it is necessary to stimulate seismic waves at multiple shot points on the survey line and conduct multiple consecutive observations. During each observation, the relative position relationship between the shot point and the receiving point must maintain a certain relationship. This relationship is called the seismic observation system.

[0077] S2: Performing cannon first arrival picking on the seismic data to obtain cannon first arrival information;

[0078] The specific steps include:

[0079] Perform preliminary cannon first arrival information picking for all seismic data in the seismic data; it should be noted that when performing preliminary cannon first arrival picking for seismic data, the cannon first arrival information picking of all data is completed on the principle of picking as much as possible; wherein the cannon first arrival information refers to the recording time corresponding to the first valid amplitude value of the seismic data recording track.

[0080] Based on the preliminary cannon first arrival information, an intersection diagram of the cannon first arrival information and the offset is drawn, and the cannon first arrival information is screened according to the intersection diagram to obtain accurate cannon first arrival information.

[0081] The intersection diagram is an intuitive expression method that uses two parameters with practical significance as the ordinate and the abscissa, and then presents it in the form of a scatter diagram; for example, a scatter diagram is drawn with the first arrival information of the cannon as the ordinate and the gun offset as the abscissa, and the scatter diagram can be used as an intersection diagram.

[0082] The first arrival information of cannons is screened according to the intersection diagram to obtain accurate first arrival information of cannons. Specifically, in the intersection diagram, the first arrival information of cannons with high quality is convergently distributed in the intersection diagram, and this part of the data remains unchanged. The first arrival information of cannons outside the concentrated distribution is interactively modified to delete abnormal values ​​to obtain accurate first arrival information of cannons.

[0083] S3: Determine the first arrival picking efficiency of each seismic data in the seismic data according to the total effective shot number and the first arrival information of the shot; specifically:

[0084] According to the first arrival information of the cannon, the number of valid picked-up traces of each shot in the seismic data is calculated; the number of valid picked-up traces refers to the total number of traces of the first arrival information of the cannon accurately picked up in each common shot line record;

[0085] Combined with the total number of channels of each shot of the seismic data in step S1, the data sorting ratio method is applied to calculate the ratio of the first arrival picking information in the seismic data (i.e., the number of channels picked with the first arrival information of the shot) to the total number of channels, and this ratio is defined as the first arrival picking efficiency of the single shot record of the seismic data.

[0086] S4: Determine the threshold value of the first arrival picking efficiency, and evaluate the first arrival information of the seismic data cannon according to the threshold value.

[0087] Specifically, according to the calculated first-arrival picking efficiency of a single shot record of seismic data, the first-arrival picking efficiency parameter of all seismic data is extracted, and the parameter is plotted in a three-dimensional plane, and the quality of the first-arrival picking of all seismic data is evaluated in the form of a chart, and an effective picking rate threshold value M is defined. If the first-arrival picking efficiency is greater than or equal to M, it is considered that the first-arrival picking can meet the subsequent near-surface tomography inversion and static correction calculations. If the first-arrival picking efficiency is less than M, the seismic data first-arrival information needs to be re-picked. The value of M is generally determined based on experience, and in some embodiments of the present invention, M=0.9.

[0088] In order to more clearly illustrate the above method, this embodiment takes the processing area located in the northwest edge of the Junggar Basin as an example for explanation, and the specific execution steps are as follows:

[0089] (1) Obtain the original seismic data of the work area, which covers an area of ​​700 square kilometers and has a data volume of 3.5 TB. The field acquisition observation system is 24L6S240R, the maximum number of receiving channels recorded by a single shot is 5760, and the total number of shots is 34044.

[0090] (2) Automatically pick the first arrival of the cannon for the seismic data in the work area, and then interactively modify the first arrival of the cannon through the intersection diagram of the first arrival of the cannon and the offset, remove abnormal points, and obtain the picked first arrival of the cannon;

[0091] (3) Based on the picked cannon first arrival information, the number of record channels with cannon first arrival information in the single shot record is calculated, and then the single shot first arrival picking efficiency parameter is calculated based on the data sorting ratio method by using the number of record channels and the maximum number of channels in the single shot record; the plane diagram of the cannon first arrival picking efficiency of the seismic data in the work area is as follows: Figure 2 As shown in the figure, the horizontal and vertical coordinates in the figure are the geodetic coordinates, and each data point in the figure is the first arrival picking efficiency of each shot point in the entire work area. The value of the color bar on the right side of the figure is the effective picking rate threshold value, and different colors in the figure correspond to different threshold values.

[0092] (4) The single shot first arrival picking efficiency is calculated for the seismic data of the entire area, and then a quantitative analysis is conducted on the parameter. The quality control is visually checked through the plane diagram and bar chart. The results are as follows: Figure 3 As shown, it is found that the single shot first arrival picking efficiency in the work area reaches above 0.95, accounting for 96% of the total data in the work area, indicating that the first arrival picking information of the large gun of this seismic data can meet the subsequent processing requirements. The application of the present invention greatly improves the processing efficiency compared with the conventional processing flow and shortens the processing cycle by 1 month.

[0093] Based on the same concept as the embodiment of the method of the present invention, the embodiment of the present invention also provides a system for quantitatively evaluating the quality of the first arrival information of the seismic data cannon, specifically, Figure 4 As shown, the evaluation system 4 includes:

[0094] An analysis unit 401 is used to analyze the seismic observation system and determine the total effective shot number of the seismic data;

[0095] A picking unit 402 is used to perform cannon first arrival picking on the seismic data to obtain cannon first arrival information;

[0096] A determination unit 403, configured to determine the first arrival picking efficiency in the seismic data according to the total effective shot number and the first arrival information of the shot;

[0097] The evaluation unit 404 is used to determine the threshold value of the first arrival picking efficiency, and evaluate the first arrival information of the seismic data cannon according to the threshold value.

[0098] Based on the same inventive concept, another exemplary embodiment of the present invention provides an electronic device. Figure 5 As shown, the electronic device includes at least one processor 501, at least one communication interface 502, at least one memory 503 and at least one communication bus 504; wherein the processor 501, the communication interface 502 and the memory 503 communicate with each other through the communication bus 504;

[0099] Memory 503, used for storing computer programs;

[0100] The processor 501 is used to implement the quantitative evaluation method of the quality of the first arrival information of the seismic data cannon when executing the program stored in the memory 503.

[0101] Optionally, the communication interface may be an interface of a communication module, such as an interface of a GSM module; the processor may be a processor CPU, or an application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention. The memory may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The memory stores a program, and the processor calls the program stored in the memory to execute some or all of the above method embodiments.

[0102] Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium storing a computer program, which implements part or all of the above method embodiments when the program is executed by a processor. Optionally, the storage medium may be a non-temporary computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0103] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for quantitatively evaluating the quality of first arrival information of seismic data cannon, characterized in that: The following steps are involved: Analyze the seismic observation system and determine the total effective shot number of the seismic data; Performing first arrival detection on the seismic data to obtain first arrival information; Determine the first arrival picking efficiency of the seismic data according to the total effective shot number and the first arrival information of the shot; A threshold value of the first arrival picking efficiency is determined, and the seismic data cannon first arrival information is evaluated according to the threshold value.

2. The method for quantitatively evaluating the quality of first arrival information of seismic data cannon according to claim 1, characterized in that: Analyzing the seismic observation system and determining the total effective shot number of the seismic data includes the following steps: Obtaining the shot lines, detection lines, shot points and receiving points in the seismic observation system, and clarifying the receiving relationship between the shot points and receiving points; Count the number of all shot points and calculate the total number of received channels corresponding to each shot point; It is determined whether the receiving point corresponding to each shot point meets the receiving relationship, and the shot points that do not meet the receiving relationship are removed. The number of remaining shot points is the total effective shot number of the seismic data.

3. The method for quantitatively evaluating the quality of first arrival information of seismic data cannon according to claim 1, characterized in that: The method of performing cannon first arrival detection on the seismic data to obtain cannon first arrival information comprises the following steps: Performing preliminary artillery first arrival information picking for all seismic data in the seismic data; Based on the preliminary cannon first arrival information, an intersection diagram of the cannon first arrival information and the offset is drawn, and the cannon first arrival information is screened according to the intersection diagram to obtain accurate cannon first arrival information.

4. The method for quantitatively evaluating the quality of first arrival information of seismic data cannon according to claim 3, characterized in that: The specific method of filtering the first arrival information of the cannon according to the intersection diagram is as follows: The first arrival information of the cannons concentrated in the intersection diagram is kept unchanged, and the first arrival information of the cannons outside the concentrated distribution in the intersection diagram is interactively modified and the abnormal values ​​are deleted.

5. The method for quantitatively evaluating the quality of first arrival information of seismic data cannon according to claim 1, characterized in that: The cannon first arrival information is the recording time corresponding to the first valid amplitude value recorded in the seismic data.

6. The method for quantitatively evaluating the quality of first arrival information of seismic data cannon according to claim 1, characterized in that: Determining the first arrival picking efficiency of the seismic data according to the effective total shot number and the first arrival information of the shot comprises the following steps: Calculate the number of valid picked-up traces for each shot in the seismic data, where the number of valid picked-up traces is the total number of traces that accurately pick up the first arrival information of the shot in each common shot line record; The ratio of the number of effective picked traces for each shot in the seismic data to the total number of traces for each shot is calculated, and the ratio is the first arrival picking efficiency.

7. The method for quantitatively evaluating the quality of first arrival information of seismic data cannon according to claim 1, characterized in that: Evaluating the first arrival information of the seismic data cannon according to the threshold value includes the following steps: Draw a three-dimensional plane map according to all first arrival picking efficiencies in the seismic data; The quality of picking up the cannon first arrival information of the seismic data is evaluated with reference to the three-dimensional plane diagram.

8. The method for quantitatively evaluating the quality of first arrival information of seismic data cannon according to claim 7, characterized in that: The evaluation of the quality of picking up the first arrival information of the seismic data by referring to the three-dimensional plane map is specifically as follows: Determine the first arrival picking efficiency and the threshold value in the seismic data to be evaluated; If the first arrival picking efficiency is greater than or equal to the threshold value, the first arrival picking efficiency is subjected to near-surface tomographic inversion and static correction calculation; If the first arrival pickup efficiency is less than the threshold value, the first arrival information of the cannon is picked up again.

9. The method for quantitatively evaluating the quality of first arrival information of seismic data cannon according to claim 1, characterized in that: The threshold value is set based on experience.

10. A quantitative evaluation system for the quality of first arrival information of seismic data, characterized in that: include: An analysis unit, used for analyzing the seismic observation system and determining the total effective shot number of the seismic data; A picking unit, used for performing cannon first arrival picking on the seismic data to obtain cannon first arrival information; A determination unit, configured to determine the first arrival picking efficiency in the seismic data according to the total effective shot number and the first arrival information of the shot; The evaluation unit is used to determine the threshold value of the first arrival picking efficiency and evaluate the first arrival information of the seismic data cannon according to the threshold value.

11. The seismic data cannon first arrival information quality quantitative evaluation system according to claim 10, characterized in that: Analyzing the seismic observation system and clarifying the total effective shot number of the seismic data in the analysis unit includes the following steps: Obtain the shot lines, detection lines, shot points and receiving points in the observation system, and clarify the receiving relationship between the shot points and receiving points; Count the number of all shot points and calculate the total number of received channels corresponding to each shot point; It is determined whether the receiving point corresponding to each shot point meets the receiving relationship, and the shot points that do not meet the receiving relationship are removed. The number of remaining shot points is the total effective shot number of the seismic data.

12. The seismic data cannon first arrival information quality quantitative evaluation system according to claim 10, characterized in that: The picking unit performs cannon first arrival picking on the seismic data to obtain cannon first arrival information, including the following steps: Performing preliminary artillery first arrival information picking for all seismic data in the seismic data; Based on the preliminary cannon first arrival information, an intersection diagram of the cannon first arrival information and the offset is drawn, and the cannon first arrival information is screened according to the intersection diagram to obtain accurate cannon first arrival information.

13. The seismic data cannon first arrival information quality quantitative evaluation system according to claim 12, characterized in that: The picking unit selects the first arrival information of the cannon according to the intersection graph in detail as follows: The first arrival information of the cannons concentrated in the intersection diagram is kept unchanged, and the first arrival information of the cannons outside the concentrated distribution in the intersection diagram is interactively modified and the abnormal values ​​are deleted.

14. The seismic data cannon first arrival information quality quantitative evaluation system according to claim 13, characterized in that: The cannon first arrival information is the recording time corresponding to the first valid amplitude value recorded in the seismic data.

15. The seismic data cannon first arrival information quality quantitative evaluation system according to claim 10, characterized in that: The determination unit determines the first arrival picking efficiency of the seismic data according to the total effective shot number and the first arrival information of the shot, including the following steps: Calculate the number of valid picked-up traces for each shot in the seismic data, where the number of valid picked-up traces is the total number of traces that accurately pick up the first arrival information of the shot in each common shot line record; The ratio of the number of effective picked traces for each shot in the seismic data to the total number of traces for each shot is calculated, and the ratio is the first arrival picking efficiency.

16. The seismic data cannon first arrival information quality quantitative evaluation system according to claim 10, characterized in that: The evaluation unit evaluates the seismic data cannon first arrival information according to the threshold value, including the following steps: Draw a three-dimensional plane map according to all first arrival picking efficiencies in the seismic data; The quality of picking up the cannon first arrival information of the seismic data is evaluated with reference to the three-dimensional plane diagram.

17. The seismic data cannon first arrival information quality quantitative evaluation system according to claim 16, characterized in that: The evaluation unit evaluates the seismic data cannon first arrival information according to the threshold value specifically as follows: Determine the first arrival picking efficiency and the threshold value in the seismic data to be evaluated; If the first arrival picking efficiency is greater than or equal to the threshold value, the first arrival picking efficiency is subjected to near-surface tomographic inversion and static correction calculation; If the first arrival pickup efficiency is less than the threshold value, the first arrival information of the cannon is picked up again.

18. The seismic data cannon first arrival information quality quantitative evaluation system according to claim 16, characterized in that: The threshold value is set based on experience.

19. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory for storing computer programs; The processor is used to implement the method for quantitatively evaluating the quality of the first arrival information of the seismic data cannon as described in any one of claims 1-9 when executing the program stored in the memory.

20. A computer-readable storage medium, characterized in that: A computer program is stored, and when the computer program is run, the method for quantitatively evaluating the quality of the first arrival information of the seismic data cannon as described in any one of claims 1 to 9 is executed.

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