Analysis method, device and equipment for improving attribute quality of two-dimensional survey line inflection point line element

Abstract

The invention belongs to the technical field of seismic exploration, and particularly discloses an analysis method, device and equipment for improving two-dimensional survey line inflection point line element attribute quality, and the method comprises the steps: S1, designing observation systems of survey lines with different arrangement lengths and different deflection angles; s2, measuring the dispersion of the line elements at the inflection point, calculating the ratio of the number of the line elements to the number of all the line elements in a preset range of the center line of the line elements at the inflection point of the two-dimensional measuring line, and judging whether the number of the line elements is increased or not; s3, performing shot point symmetric encryption at different positions at the inflection point on the two-dimensional survey line, and determining the position with the maximum line element number ratio as the optimal shot point symmetric encryption position at the inflection point on the two-dimensional survey line of the observation system; and S4, symmetrically encrypting shot points with different distances at the inflection point on the two-dimensional measuring line, and determining the optimal distance of symmetric encryption of the shot points. The method improves the attribute quality of the line element at the inflection point of the measuring line, avoids the sudden change of the number of coverage times, and guarantees the data quality. The method is suitable for two-dimensional seismic exploration operation under the complex earth surface.

Description

Technical Field

[0001] The invention belongs to the technical field of seismic exploration, and specifically relates to an analysis method, a device and equipment for improving the quality of line element attributes of inflection points of two-dimensional survey lines. Background Art

[0002] Two-dimensional survey lines are an important part of onshore seismic survey line types. In the exploration process of the Ordos Basin in recent decades, a total of 281,000 kilometers of two-dimensional seismic survey lines have been deployed, which have played an important role in increasing oil field reserves. The deployment of survey lines is based on the needs of geological tasks, so how to ensure the construction integrity of the deployed survey lines is of great significance. There are many large obstacles in the Ordos Basin, such as county towns, coal mines, water source protection areas, forest protection areas, large villages, and rivers. When the seismic survey line passes through a large obstacle, the survey line deflection plan is usually adopted for construction to ensure the integrity of the seismic deployment.

[0003] When the two-dimensional survey line is deflected, it will inevitably lead to the discreteness of the line element at the turning point (see Appendix Figure 1 ), which will affect the data quality. The current offset principle of 2D seismic survey lines is: "Generally, the difference between the azimuth of the turning edge and the azimuth of the designed survey line is required to be no more than 8° (no more than 16° in mountainous areas)". In the process of processing 2D seismic straight survey lines, in order to ensure the processing accuracy of seismic data, the line elements outside the range of 200m on both sides of the line element center line are usually eliminated. After the survey line is deflected, the line elements are seriously dispersed. The number of line elements within 200m on both sides of the line element center line at the turning point cannot meet the theoretical design requirements. The number of line elements of some survey lines will be even lower. The low number of line elements within a certain range causes low coverage times (see Appendix Figure 2 ), which has a significant impact on data quality.

[0004] By increasing the number of receiving points, the line element properties at the inflection point can be effectively improved, but this will cause the observation system to change; by increasing the number of shot points, the number of line elements at the inflection point can be increased (see Appendix Figure 3 ), thereby increasing the number of coverage at the inflection point (see Appendix Figure 4 ), although it can effectively improve the uniformity of the line element attributes of the two-dimensional survey line, if the shot density is too high, the line element attributes at the turning point of the survey line will far exceed the standard, which will not only cause an additional increase in the workload of seismic acquisition, but also cause a sudden change in the overall coverage number (see Appendix Figure 5 ) causes a consistency processing effect and reduces data quality. Summary of the invention

[0005] The purpose of the present invention is to provide an analysis method, device and equipment for improving the quality of line element attributes at the inflection points of two-dimensional survey lines, so as to improve the quality of line element attributes at the inflection points of two-dimensional survey lines, avoid sudden changes in coverage times, and ensure data quality.

[0006] In order to achieve the above-mentioned purpose, the technical methods adopted by the present invention are as follows:

[0007] An analysis method for improving the quality of line element attributes of inflection points of a two-dimensional survey line comprises the following steps performed in sequence:

[0008] S1. Design observation systems with different arrangement lengths and different deflection angles;

[0009] S2. Input the SPS file into the seismic exploration professional processing software according to the design scheme of different observation systems, measure the discreteness of the line element at the inflection point, count the number of coverage times and the number of line elements within the preset range of the center line of the inflection point line element of the two-dimensional survey line and the total number of line elements, calculate the ratio of the number of line elements within the preset range of the center line of the inflection point line element of the two-dimensional survey line to the total number of line elements, if the ratio meets the technical quality requirements, there is no need to increase the number of line elements, if the ratio does not meet the technical quality requirements, it is necessary to increase the number of line elements by increasing the number of shot points;

[0010] S3, for the observation system designed in step S1, symmetrical encryption design of shot points is performed for different positions at the inflection points on the two-dimensional survey line of each observation system, and the number of line elements within the preset range of the center line of the inflection point line element of the two-dimensional survey line of the observation system is counted using professional processing software for seismic exploration, and the number of line elements within the preset range of the center line of the inflection point line element on the two-dimensional survey line of each observation system after the shot points are encrypted at different positions at the inflection points, and the ratio of the number of line elements to the number of all line elements of the two-dimensional survey line of the corresponding observation system in step S2 is calculated, and the position with the largest ratio is determined as the optimal position for symmetrical encryption of shot points at the inflection points on the two-dimensional survey line of the observation system;

[0011] S4. For the observation system designed in step S1, symmetrically encrypt shot points of different distances at the inflection points on the two-dimensional survey line of each observation system, use professional seismic exploration processing software to count the number of line elements within a preset range of the center line of the inflection point line element on the survey line after the shot points of different distances are encrypted on the inflection points of each observation system, calculate the number of line elements within a preset range of the center line of the inflection point line element on the two-dimensional survey line after the shot points of different distances are encrypted on the inflection points of each observation system, and calculate the ratio of the number of line elements within a preset range of the center line of the inflection point line element on the two-dimensional survey line of each observation system to the number of all line elements of the two-dimensional survey line of the corresponding observation system in step S2, and determine the shot point encryption distance that makes the ratio meet the technical quality requirements as the optimal distance for symmetrical encryption of shot points.

[0012] As a limitation: the professional processing software for seismic exploration is Promax software.

[0013] As a further limitation: the preset range of the center line of the two-dimensional survey line inflection point line element is determined by the technical indicators and the development of the geological target structure.

[0014] The present invention also provides an analysis device for improving the quality of the inflection point line element attributes of a two-dimensional measurement line, comprising:

[0015] The observation system design module is used to design observation systems with different arrangement lengths and different inflection angles;

[0016] The module for judging the number of line elements to be increased is used to input the SPS file into the professional processing software for seismic exploration according to the design schemes of different observation systems, measure the discreteness of the line elements at the inflection points, count the number of times and the number of line elements covered within the preset range of the center line of the inflection point line elements of the two-dimensional survey line and all the line elements, and calculate the ratio of the number of line elements within the preset range of the center line of the inflection point line elements of the two-dimensional survey line to the number of all line elements. If the ratio meets the technical quality requirements, there is no need to increase the number of line elements. If the ratio does not meet the technical quality requirements, it is necessary to increase the number of line elements by increasing the number of shot points.

[0017] The shot point encryption position determination module, for the observation system designed in the observation system design module, performs symmetrical encryption design of shot points at different positions at the inflection points on each two-dimensional survey line of each observation system, uses seismic exploration professional processing software to count the number of line elements within the preset range of the center line of the inflection point line element of the two-dimensional survey line of the observation system, calculates the number of line elements within the preset range of the center line of the inflection point line element on the two-dimensional survey line of each observation system after the shot points are encrypted at different positions at the inflection points, and calculates the ratio of the number of line elements to the number of all line elements of the corresponding two-dimensional survey line of the observation system in the line element number improvement judgment module, and determines the position with the largest ratio as the best position for symmetrical encryption of shot points at the inflection points on the two-dimensional survey line of the observation system;

[0018] The shot point encryption distance determination module, for the observation system designed in the observation system design module, symmetrically encrypts shot points of different distances at the inflection points on each two-dimensional survey line of the observation system, uses seismic exploration professional processing software to count the number of line elements within a preset range of the center line of the inflection point line element on the survey line after each observation system encrypts shot points of different distances, calculates the number of line elements within a preset range of the center line of the inflection point line element on the two-dimensional survey line after each observation system encrypts shot points of different distances at the inflection point, and calculates the ratio of the number of line elements to the number of all line elements of the corresponding two-dimensional survey line of the observation system in the line element number improvement judgment module, and determines that the shot point encryption distance that makes this ratio meet the technical quality requirements is the optimal distance for symmetrical encryption of shot points.

[0019] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor implements the above method when executing the computer program.

[0020] Due to the adoption of the above scheme, the present invention has the following beneficial effects compared with the prior art:

[0021] (1) The present invention provides an analysis method for improving the quality of line element attributes at the inflection point of a two-dimensional survey line. By designing an observation system for survey lines with different arrangement lengths and different inflection angles, the line element discreteness and the proportion of line elements within a preset range of survey lines with different arrangement lengths and different inflection angles are quantitatively analyzed to determine the position and distance of the densification of the shot points, thereby improving the quality of line element attributes at the inflection point of the survey line, avoiding sudden changes in the number of coverage times, and ensuring the quality of the data.

[0022] (2) The present invention also provides corresponding devices and electronic devices, which further make the method more practical. The electronic devices and readable storage media have corresponding advantages.

[0023] The invention is suitable for two-dimensional seismic exploration operations under complex surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a schematic diagram of the degree of line element dispersion when the two-dimensional survey line is deflected;

[0026] Figure 2 This is a schematic diagram of the coverage times within 200m of the center of the turning point of the two-dimensional survey line;

[0027] Figure 3 Schematic diagram of improving the number of line elements at the turning point of a 2D survey line in order to increase shot points;

[0028] Figure 4 Schematic diagram of increasing the number of coverage at the turning points of the two-dimensional survey line in order to increase the number of shot points;

[0029] Figure 5 This is a schematic diagram of the sudden change in coverage times caused by excessive gun density;

[0030] Figure 6 This is a flow chart of an analysis method for improving the quality of line element attributes of inflection points of two-dimensional survey lines according to Embodiment 1 of the present invention;

[0031] Figure 7 This is a schematic diagram of the text of the number of line elements of the observation system txt in step S2 of embodiment 1 of the present invention;

[0032] Figure 8 This is a statistical diagram of the number of observation system coverages in step S2 of embodiment 1 of the present invention;

[0033] Fig. 9 This is a statistical diagram of the number of observation system coverages in step S2 of embodiment 1 of the present invention;

[0034] Fig.10Schematic diagram of symmetric encryption of shot points at positions of 0-100m, 100-200m, 200-300m, 300-400m, and 400-500m at the inflection points on the two-dimensional survey line for each observation system in step S3 of Embodiment 1 of the present invention;

[0035] Fig.11 Statistical chart of the coverage times of the observation system in step S3 of Embodiment 1 of the present invention;

[0036] Fig.12 Schematic diagram of the txt text of the number of line elements of the observation system in step S3 of Embodiment 1 of the present invention;

[0037] Fig.13 Effect diagram of the improvement of the number of line elements after symmetric encryption of shot points at positions of 0-100m, 100-200m, 200-300m, 300-400m, and 400-500m at the inflection points on the two-dimensional survey line in step S3 of Embodiment 1 of the present invention;

[0038] Fig.14 Schematic diagram of symmetric encryption of shot points at 0-100m, 0-200m, and 0-500m at the inflection points on the two-dimensional survey line for each observation system in step S4 of Embodiment 1 of the present invention;

[0039] Fig.15 Statistical chart of the coverage times of the observation system in step S4 of Embodiment 1 of the present invention;

[0040] Fig.16 Schematic diagram of the txt text of the number of line elements of the observation system in step S4 of Embodiment 1 of the present invention;

[0041] Fig.17 Effect diagram of the improvement of the number of line elements after symmetric encryption of shot points at 0-100m, 0-200m, and 0-500m at the inflection points on the two-dimensional survey line in step S4 of Embodiment 1 of the present invention;

[0042] Fig.18 Structural block diagram of an analysis device for improving the quality of line element attributes at the inflection points of a two-dimensional survey line in Embodiment 2 of the present invention;

[0043] Fig.19 Structural block diagram of an electronic device in Embodiment 2 of the present invention. Detailed implementation manners

[0044] The present invention will be further described below in conjunction with embodiments. However, those skilled in the art should understand that the present invention is not limited to the following embodiments, and any improvements and equivalent changes made on the basis of the specific embodiments of the present invention are within the scope of protection of the claims of the present invention.

[0045] Embodiment 1 An analysis method for improving the quality of line element attributes at the inflection points of a two-dimensional survey line

[0046] An analytical method to improve the quality of line element attributes of inflection points of two-dimensional survey lines, such as Figure 6 As shown, the following steps are performed in sequence:

[0047] S1. Design an observation system with different arrangement lengths and different inflection angles.

[0048] S2. Input the SPS file into the promax software according to the design scheme of different observation systems, measure the discrete width of the line element at the inflection point, use the Crooked Line Binning and QC line element statistics module of the promax software to count the number of coverage times and line elements within 200m of the center line of the inflection point line element of each observation system two-dimensional survey line and all the coverage times, and export the observation system line element number txt text and the observation system coverage times statistics chart. The observation system line element number txt text is as follows: Figure 7 As shown in the figure, the statistical diagram of the observation system coverage times is as follows Figure 8 and Fig. 9 As shown;

[0049] In the txt text of the number of line elements of the observation system, the first column of data is the serial number of each common center point, the second column of data is the number of line elements at each common center point within 200m of the center line of the inflection point line element of the two-dimensional survey line of the observation system, and the third column of data is the number of all line elements at each common center point of the two-dimensional survey line of the observation system. The ratio of the number of line elements at each common center point within 200m of the center line of the inflection point line element of each two-dimensional survey line of each observation system is calculated to obtain the proportion of line elements within 200m of the center line of the inflection point line element of each two-dimensional survey line of each observation system; the promax software is used to measure the dispersion of line elements within 200m of the center line of the inflection point line element of each two-dimensional survey line of each observation system; the arrangement length of the two-dimensional survey line of each observation system, the inflection angle, the dispersion of line elements within 200m of the center line of the inflection point line element, and the proportion of line elements within 200m of the center line of the inflection point line element are counted to analyze whether the technical requirements are met.

[0050] The line element dispersion and the proportion of line element quantity within 200m of the center line of the inflection point line element of the two-dimensional survey line of the observation system of this embodiment are shown in Table 1;

[0051] Table 1 The discrete width of line elements and the proportion of line element numbers within 200m of the center line of the inflection point line element of the two-dimensional survey line

[0052]

[0053] As shown in Table 1, the length of the two-dimensional survey line arrangement is 3990m, the inflection angle is 4°-8°, the line element dispersion within 200m of the inflection point line element center line is 56-82m, and the line element within 200m of the inflection point line element center line accounts for 100%; the length of the two-dimensional survey line arrangement is 5990m, the inflection angle is 4°-8°, the line element dispersion within 200m of the inflection point line element center line is 75-165m, and the line element within 200m of the inflection point line element center line accounts for 100%; the length of the two-dimensional survey line arrangement is 7190m, the inflection angle is 3°-8°, the line element dispersion within 200m of the inflection point line element center line is 110-310m, and the line element within 200m of the inflection point line element center line accounts for The ratio is 87%-100%; the length of the two-dimensional survey line is 7990m, the turning angle is 3°-8°, the dispersion of the line elements within 200m of the center line of the inflection point line element is 120-340m, and the line elements within 200m of the center line of the inflection point line element account for 86%-100%. The longer the length of the two-dimensional survey line and the larger the turning angle, the more serious the dispersion of the line elements within 200m of the center line of the inflection point line element, and the smaller the proportion of the number of line elements within 200m of the center line of the inflection point line element of the two-dimensional survey line; if the proportion of the number of line elements within 200m of the center line of the inflection point line element of the two-dimensional survey line meets the technical quality requirements, there is no need to increase the number of line elements. If the ratio does not meet the technical quality requirements, the number of line elements needs to be increased.

[0054] S3, for the observation system designed in step S1, such as Fig.10 As shown in FIG. 1 , the same number of shot points are symmetrically encrypted at the positions of 0-100m, 100-200m, 200-300m, 300-400m, and 400-500m at the turning point of each observation system on the two-dimensional survey line, and the number of line elements within 200m of the center line of the turning point line element is increased. The Crooked Line Binning and QC line element statistics module of the promax software is used to count the number of coverage times and the number of line elements within 200m of the center line of the line element after the symmetrically encrypted shot points at different positions at the turning point of the two-dimensional survey line. The observation system coverage times statistical graph and the observation system line element number txt text data are exported. The observation system coverage times statistical graph is shown in FIG. Fig.11 As shown; the observation system line element number txt text is as follows Fig.12 As shown, after the shot points at different positions of the inflection point on the two-dimensional survey line of each observation system are encrypted, the number of line elements within 200m of the center line of the line element at the inflection point on the two-dimensional survey line is calculated, and the ratio of the number of line elements to the number of all line elements at each common center point of the two-dimensional survey line of the corresponding observation system in step S2 is calculated, and the position with the largest ratio is determined as the best position for symmetrical encryption of the shot points at the inflection point on the two-dimensional survey line of the observation system; the effect diagram of the improvement of the number of line elements after the symmetrical encryption of the shot points at the inflection point at 0-100m, 100-200m, 200-300m, 300-400m, and 400-500m on the two-dimensional survey line of this embodiment is shown in Fig.13As shown, after statistical analysis, the position range of 0-100m at the inflection point on the two-dimensional survey line is symmetrically encrypted, and the ratio of the number of line elements is 113%. It is determined that the position range of 0-100m at the inflection point on the two-dimensional survey line of the observation system is the best position for symmetrical encryption of shot points to increase the number of line elements within 200m of the center line of the inflection point line element of the two-dimensional survey line.

[0055] S4, for the observation system designed in step S1, such as Fig.14 As shown in the figure, on each observation system two-dimensional survey line, the inflection points 0-100m, 0-200m, and 0-500m are symmetrically encrypted. The Crooked Line Binning and QC line element statistics module of the promax software is used to count the number of encrypted shot points and the number of coverage and line elements within 200m of the center line of the inflection point line element on the survey line after encrypting the shot points at different distances. The observation system coverage number statistics chart and the observation system line element number txt text are exported. The observation system coverage number statistics chart is shown in the figure below. Fig.15 As shown; the observation system line element number txt text is as follows Fig.16 As shown, the number of line elements within 200m of the center line of the inflection point line element on each two-dimensional survey line of each observation system after encrypting shot points of different distances on the inflection point and the ratio of the number of line elements to the number of all line elements at each common center point of the two-dimensional survey line of the corresponding observation system in step S2 are calculated, and the shot point encryption distance that makes the ratio meet the technical quality requirements is determined as the optimal distance for symmetrical encryption of shot points; the ratio of the number of line elements after symmetrical encryption of shot points within the range of 0-100m, 0-200m, and 0-500m of the inflection point of the two-dimensional survey line in this embodiment is as follows Fig.17 As shown, the two-dimensional survey line is arranged with a length of 7190m, and the observation system with a deflection angle of 7° densifies the shot points in the range of 0-100m, and the ratio of the number of line elements is more than 98.9%, which meets the technical quality requirements.

[0056] Embodiment 2 An analysis device and electronic device for improving the quality of line element attributes of two-dimensional measurement line inflection points

[0057] An analysis device for improving the quality of line element attributes of two-dimensional line inflection points, such as Fig.18 As shown, including:

[0058] The observation system design module is used to design observation systems with different arrangement lengths and different inflection angles;

[0059] The module for judging the number of line elements to be increased is used to input the SPS file into the professional processing software for seismic exploration according to the design schemes of different observation systems, measure the discreteness of the line elements at the inflection points, count the number of times and the number of line elements covered within the preset range of the center line of the inflection point line elements of the two-dimensional survey line and all the line elements, and calculate the ratio of the number of line elements within the preset range of the center line of the inflection point line elements of the two-dimensional survey line to the number of all line elements. If the ratio meets the technical quality requirements, there is no need to increase the number of line elements. If the ratio does not meet the technical quality requirements, it is necessary to increase the number of line elements by increasing the number of shot points.

[0060] The shot point encryption position determination module, for the observation system designed in the observation system design module, performs symmetrical encryption design of shot points at different positions at the inflection points on each two-dimensional survey line of each observation system, uses seismic exploration professional processing software to count the number of line elements within the preset range of the center line of the inflection point line element of the two-dimensional survey line of the observation system, calculates the number of line elements within the preset range of the center line of the inflection point line element on the two-dimensional survey line of each observation system after the shot points are encrypted at different positions at the inflection points, and calculates the ratio of the number of line elements to the number of all line elements of the corresponding two-dimensional survey line of the observation system in the line element number improvement judgment module, and determines the position with the largest ratio as the best position for symmetrical encryption of shot points at the inflection points on the two-dimensional survey line of the observation system;

[0061] The shot point encryption distance determination module, for the observation system designed in the observation system design module, symmetrically encrypts shot points of different distances at the inflection points on each two-dimensional survey line of the observation system, uses seismic exploration professional processing software to count the number of line elements within a preset range of the center line of the inflection point line element on the survey line after each observation system encrypts shot points of different distances, calculates the number of line elements within a preset range of the center line of the inflection point line element on the two-dimensional survey line after each observation system encrypts shot points of different distances at the inflection point, and calculates the ratio of the number of line elements to the number of all line elements of the corresponding two-dimensional survey line of the observation system in the line element number improvement judgment module, and determines that the shot point encryption distance that makes this ratio meet the technical quality requirements is the optimal distance for symmetrical encryption of shot points.

[0062] This embodiment also provides an electronic device, whose structure is as follows: Fig.19 As shown, it includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor implements the method described in Example 1 when executing the computer program.

[0063] Example 3: An analysis method for improving the quality of line element attributes of two-dimensional line inflection points

[0064] In a 2D survey in the Ordos Basin, a total of 28 survey lines were implemented, with a total length of 2,700 km. Due to the wide deployment range and many large obstacles, a total of 23 deflections were generated, with deflection angles ranging from 3° to 8°, and the line element dispersion reached 56-340m. According to the requirements of the oilfield company, the plan of "symmetrically encrypting 1km along the survey line with the inflection point as the center and doubling the shot density" was strictly implemented. The proportion of line elements within 200m of the inflection point center far exceeded the requirement of 95%, which not only caused a sudden change in the number of coverage times, but also increased the work of 184km of shot points. The amount of additional acquisition costs of tens of millions of yuan was increased. The analysis method of Example 1 was used to conduct a detailed statistical analysis on the discrete width and quantity proportion of the line elements within 200m of the inflection point center of each inflection scheme. Finally, only the shot points of a certain distance were encrypted for the survey lines with large arrangements and large inflection angles, as shown in Table 2. The technical quality index requirements of the oil field company on the inflection of the survey line were met. Finally, only 12km of shot point workload was increased, which was reduced by 172km of shot point workload compared with the traditional shot point encryption scheme, achieving cost reduction and efficiency improvement in seismic exploration.

[0065] Table 2 The proportion of line elements within 200 m of the center line of the inflection point line element of a 2D survey line in the Ordos Basin and the density of shot points

[0066]

[0067]

Claims

1. An analytical method for improving the quality of line element attributes of inflection points of two-dimensional survey lines. It is characterized in that The process includes the following steps: S1. Design observation systems with different arrangement lengths and different deflection angles; S2. Input the SPS file into the seismic exploration professional processing software according to the design scheme of different observation systems, measure the discreteness of the line element at the inflection point, count the number of coverage times and the number of line elements within the preset range of the center line of the inflection point line element of the two-dimensional survey line and the total number of line elements, calculate the ratio of the number of line elements within the preset range of the center line of the inflection point line element of the two-dimensional survey line to the total number of line elements, if the ratio meets the technical quality requirements, there is no need to increase the number of line elements, if the ratio does not meet the technical quality requirements, it is necessary to increase the number of line elements by increasing the number of shot points; S3, for the observation system designed in step S1, symmetrical encryption design of shot points is performed for different positions at the inflection points on the two-dimensional survey line of each observation system, and the number of line elements within the preset range of the center line of the inflection point line element of the two-dimensional survey line of the observation system is counted using professional processing software for seismic exploration, and the number of line elements within the preset range of the center line of the inflection point line element on the two-dimensional survey line of each observation system after the shot points are encrypted at different positions at the inflection points, and the ratio of the number of line elements to the number of all line elements of the two-dimensional survey line of the corresponding observation system in step S2 is calculated, and the position with the largest ratio is determined as the optimal position for symmetrical encryption of shot points at the inflection points on the two-dimensional survey line of the observation system; S4. For the observation system designed in step S1, symmetrically encrypt shot points of different distances at the inflection points on the two-dimensional survey line of each observation system, use professional seismic exploration processing software to count the number of line elements within a preset range of the center line of the inflection point line element on the survey line after the shot points of different distances are encrypted on the inflection points of each observation system, calculate the number of line elements within a preset range of the center line of the inflection point line element on the two-dimensional survey line after the shot points of different distances are encrypted on the inflection points of each observation system, and calculate the ratio of the number of line elements within a preset range of the center line of the inflection point line element on the two-dimensional survey line of each observation system to the number of all line elements of the two-dimensional survey line of the corresponding observation system in step S2, and determine the shot point encryption distance that makes the ratio meet the technical quality requirements as the optimal distance for symmetrical encryption of shot points.

2. According to claim 1, a method for analyzing the quality of the line element attributes of the inflection point of a two-dimensional survey line is provided. It is characterized in that The professional processing software for seismic exploration is Promax software.

3. According to the analysis method for improving the quality of the line element attribute of the inflection point of a two-dimensional survey line according to claim 1 or 2, It is characterized in that The preset range of the center line of the two-dimensional survey line inflection point line element is determined by technical indicators and the development of geological target structures.

4. An analysis device for improving the quality of line element attributes of inflection points of two-dimensional survey lines, It is characterized in that include: The observation system design module is used to design observation systems with different arrangement lengths and different inflection angles; The module for judging the number of line elements to be increased is used to input the SPS file into the professional processing software for seismic exploration according to the design schemes of different observation systems, measure the discreteness of the line elements at the inflection points, count the number of times and the number of line elements covered within the preset range of the center line of the inflection point line elements of the two-dimensional survey line and the total number of line elements, and calculate the ratio of the number of line elements within the preset range of the center line of the inflection point line elements of the two-dimensional survey line to the total number of line elements. If the ratio meets the technical quality requirements, there is no need to increase the number of line elements. If the ratio does not meet the technical quality requirements, it is necessary to increase the number of line elements by increasing the number of shot points. The shot point encryption position determination module, for the observation system designed in the observation system design module, performs symmetrical encryption design of shot points at different positions at the inflection points on each two-dimensional survey line of each observation system, uses seismic exploration professional processing software to count the number of line elements within the preset range of the center line of the inflection point line element of the two-dimensional survey line of the observation system, calculates the number of line elements within the preset range of the center line of the inflection point line element on the two-dimensional survey line of each observation system after the shot points are encrypted at different positions at the inflection points, and calculates the ratio of the number of line elements to the number of all line elements of the corresponding two-dimensional survey line of the observation system in the line element number improvement judgment module, and determines the position with the largest ratio as the best position for symmetrical encryption of shot points at the inflection points on the two-dimensional survey line of the observation system; The shot point encryption distance determination module, for the observation system designed in the observation system design module, symmetrically encrypts shot points of different distances at the inflection points on each two-dimensional survey line of the observation system, uses seismic exploration professional processing software to count the number of line elements within a preset range of the center line of the inflection point line element on the survey line after each observation system encrypts shot points of different distances, calculates the number of line elements within a preset range of the center line of the inflection point line element on the two-dimensional survey line after each observation system encrypts shot points of different distances at the inflection point, and calculates the ratio of the number of line elements to the number of all line elements of the corresponding two-dimensional survey line of the observation system in the line element number improvement judgment module, and determines that the shot point encryption distance that makes this ratio meet the technical quality requirements is the optimal distance for symmetrical encryption of shot points.

5. An electronic device, It is characterized in that The method comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein when the processor executes the computer program, the method according to any one of claims 1 to 3 is implemented.

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