Detector unequal sensitivity combined response calculation method, device, equipment and medium

Abstract

The invention belongs to the technical field of seismic physical exploration, and particularly discloses a detector unequal sensitivity combination response calculation method, which comprises the following steps: S1, acquiring basic parameters of a detector unequal sensitivity combination; s2, based on the basic parameters obtained in the step S1, decomposing the unequal sensitivity combination of the detector into at least one sub-combination A and one linear sub-combination B; s3, calculating the response of all the sub-combinations A and the response of all the sub-combinations B; and S4, superposing the response of all the sub-combinations A and the response of all the sub-combinations B obtained in the step S3 to obtain the response of the unequal sensitivity combination of the detector. The method can simplify the calculation formula of the unequal sensitivity combination response of the detector, is suitable for all unequal sensitivity linear combination distribution conditions, and facilitates the realization of a computer program. The method is suitable for interference suppression in seismic exploration.

Description

Technical Field

[0001] The present invention belongs to the technical field of seismic physical prospecting, and specifically relates to a method, device, and equipment for calculating the combined response of geophones with unequal sensitivities. Background Art

[0002] With the continuous development of seismic exploration, the exploration targets have gradually shifted to some special terrains. In these areas, the surface conditions are complex and various interferences are relatively developed. Geophone combination is often used as an important means to improve the signal-to-noise ratio of field data.

[0003] Geophone combination means arranging multiple geophones in a certain form on a seismic trace and simultaneously receiving seismic waves, and then superimposing the signals they receive as the input of the same seismic trace. It weakens coherent or incoherent noise and enhances effective signals according to the difference in apparent velocity when the signal propagates to the combination, and finally distinguishes the effective signal from the noise. There are various forms of geophone combination, such as linear combination, area combination, equal-sensitivity combination, unequal-sensitivity combination, etc. As a key technology for analyzing the combined response of geophone combination patterns at the receiving end, there have been few achievements in simple linear combined response in recent years. The few relevant research results are only comparative analyses of seismic acquisition data of different combined patterns in the field, lacking systematic theoretical analysis. For the response theoretical analysis of complex combined patterns, there are even fewer relevant research results and even fewer practical application results.

[0004] Unequal-sensitivity combination is a linear combination. Geophones are arranged at equal intervals along the survey line, but the sensitivities of the geophones placed at each point are not equal. The traditional methods for calculating the combined response of unequal-sensitivity geophones mainly include: (1) Central weighting method: obtaining its combined response by weighted summation of geophones at different positions; (2) Squaring method: when the distribution of unequal-sensitivity combination conforms to an isosceles triangle distribution, the squaring method can quickly obtain its combined response. However, after the central weighting method is decomposed according to the centrally symmetric geophone pairs, the formula is complex and it is difficult to implement the program. The squaring method is not applicable to all cases of unequal-sensitivity distributions. Summary of the Invention

[0005] The purpose of the present invention is to provide a method, device, equipment, and medium for calculating the combined response of geophones with unequal sensitivities, so as to simplify the calculation formula of the combined response of geophones with unequal sensitivities, adapt to all cases of unequal-sensitivity distributions, and facilitate the implementation of computer programs.

[0006] The technical method adopted by the present invention to achieve the above purpose is as follows:

[0007] A method for calculating the combined response of geophones with unequal sensitivities includes the following steps:

[0008] S1. Obtain the basic parameters of the geophone unequal-sensitivity combination;

[0009] S2. Based on the basic parameters obtained in step S1, decompose the unequal-sensitivity combination of geophones into at least one sub-combination A and a linear sub-combination B;

[0010] S3. Calculate the responses of all sub-combinations A and the response of sub-combination B;

[0011] S4. Superimpose the responses of all sub-combinations A and the response of sub-combination B obtained in step S3, and the response of the unequal-sensitivity combination of geophones is obtained.

[0012] As a limitation: In step S1, the unequal-sensitivity combination is a linear combination, and the basic parameters include the total number N of geophones, the maximum weighting coefficient a, and the group interval Δx.

[0013] As a further limitation: In step S2, the geophones in each sub-combination A are continuous along the survey line direction, the number of geophones in each sub-combination A is the same, the weighting coefficient of each sub-combination A is 1, the number of sub-combinations A is m, and m = a; the number of geophones in each sub-combination A is N a , the group interval of each sub-combination A is Δx a , Δx a = Δx; the number of geophones in sub-combination B is N b , N b = a; the group interval of sub-combination B is Δx b , Δx b = the distance between the centers of adjacent sub-combinations A along the survey line direction, and the distance between the centers of adjacent sub-combinations A along the survey line direction in all sub-combinations A is the same.

[0014] As a further further limitation: In step S3, the responses of all sub-combinations A are the response of sub-combination B wherein, is a combination parameter.

[0015] As a further further further limitation: In step S4, the responses of all sub-combinations A and the response of sub-combination B are superimposed, specifically by obtaining the response of all sub-combinations A as and the response of sub-combination B for convolution, and the calculation formula is:

[0016]

[0017] That is:

[0018]

[0019] wherein, Is the response of the unequal sensitivity combination of geophones.

[0020] The present invention also discloses a device for calculating the response of an unequal sensitivity combination of geophones, including:

[0021] A basic parameter acquisition module, configured to acquire the basic parameters of the unequal sensitivity combination of geophones;

[0022] A decomposition module, based on the acquired basic parameters, decomposes the unequal sensitivity combination of geophones into at least one sub-combination A and a linear sub-combination B;

[0023] A sub-combination response calculation module, calculates the responses of all sub-combinations A and the response of sub-combination B;

[0024] An unequal sensitivity combination response calculation module, superimposes the responses of all sub-combinations A and the response of sub-combination B, and then obtains the response of the unequal sensitivity combination of geophones.

[0025] The present invention also discloses an electronic device, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor. When the processor executes the computer program, the above method is implemented.

[0026] The present invention also discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the above method is implemented.

[0027] Due to the adoption of the above solution, compared with the prior art, the beneficial effects obtained by the present invention are:

[0028] (1) A method for calculating the response of an unequal sensitivity combination of geophones provided by the present invention, by decomposing the unequal sensitivity combination of geophones and then performing convolution calculation on the responses of the decomposed sub-combinations to calculate the response of the unequal sensitivity combination of geophones, can present each control parameter in a digital form, greatly facilitating the implementation of computer programs, and having a wide range of applications, applicable to all cases of unequal sensitivity linear combination distributions;

[0029] (2) The present invention also provides corresponding implementation devices, electronic devices, and readable storage media, further making the method more practical, and the devices, electronic devices, and readable storage media have corresponding advantages.

[0030] The present invention is applicable to interference suppression in seismic exploration. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0032] Figure 1Flow chart of the calculation method for the combined response of geophones with unequal sensitivities in Embodiment 1 of the present invention;

[0033] Figure 2 Schematic diagram of the decomposition of the combined geophones with unequal sensitivities in Embodiment 2 of the present invention;

[0034] Figure 3 Response curve of the combined geophones with unequal sensitivities in Embodiment 2 of the present invention;

[0035] Figure 4 Schematic diagram of the decomposition of the combined geophones with unequal sensitivities in Embodiment 3 of the present invention;

[0036] Figure 5 Response curve of the combined geophones with unequal sensitivities in Embodiment 3 of the present invention;

[0037] Figure 6 Structure block diagram of the calculation device for the combined response of geophones with unequal sensitivities in Embodiment 4 of the present invention;

[0038] Figure 7 Structure block diagram of the electronic device in Embodiment 4 of the present invention. Detailed implementation manners

[0039] The present invention will be further described below in conjunction with the 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 the claims of the present invention.

[0040] Embodiment 1 A calculation method for the combined response of geophones with unequal sensitivities

[0041] A calculation method for the combined response of geophones with unequal sensitivities, as Figure 1 shown, includes the following steps:

[0042] S1. Obtain the basic parameters of the combined geophones with unequal sensitivities. The combined geophones with unequal sensitivities are a linear combination, and the basic parameters include the total number N of geophones, the maximum weighting coefficient a, and the in-group distance Δx;

[0043] S2. Based on the basic parameters obtained in step S1, decompose the combined geophones with unequal sensitivities into at least one sub-combination A and a linear sub-combination B; the geophones in each sub-combination A are continuous along the survey line, the number of geophones in each sub-combination A is the same, the weighting coefficient of each sub-combination A is 1, the number of sub-combinations A is m, and m = a; the number of geophones in each sub-combination A is N a , the in-group distance of each sub-combination A is Δx a , Δx a = Δx; the number of geophones in the sub-combination B is N b , Nb = a; The intra-group distance of sub-combination B is Δx b , Δx b = The distance between the centers of adjacent sub-combinations A along the survey line direction, and the distances between the centers of adjacent sub-combinations A along the survey line direction in all sub-combinations A are the same;

[0044] S3. Calculate the responses of all sub-combinations A and the response of sub-combination B; The response of all sub-combinations A is The response of sub-combination B wherein, is a combination parameter;

[0045] S4. Superimpose the responses of all sub-combinations A and the response of sub-combination B obtained in step S3, specifically by obtaining the response of all sub-combinations A as and the response of sub-combination B The convolution of, that is, the response of the unequal-sensitivity geophone combination is obtained, and the calculation formula is:

[0046]

[0047] That is:

[0048]

[0049] wherein, is the response of the unequal-sensitivity geophone combination.

[0050] Example 2 An example of calculating the response of an unequal-sensitivity geophone combination

[0051] In this example, the form of the geophone combination is 12321. The calculation method of Example 1 is used to calculate the response of the unequal-sensitivity geophone combination. The total number of geophones N in the geophone combination = 9, the maximum weighting coefficient a = 3, and the intra-group distance Δx = 5. The geophone combination is decomposed into three sub-combinations A and a linear sub-combination B. The decomposition schematic diagram is as Figure 2 shown. The number of geophones in each sub-combination A is 3, and the intra-group distance Δx of each sub-combination A a = 5. The number of geophones in sub-combination B is 3, and the intra-group distance Δx of sub-combination B b = 5. Substitute the above parameters into the calculation formula of the response of the unequal-sensitivity geophone combination in Example 1 to obtain the response curve of the unequal-sensitivity geophone combination as shown in Figure 3 shown.

[0052] Example 3 An example of calculating the response of an unequal-sensitivity geophone combination

[0053] In this embodiment, the form of the geophone combination is 123444321. The calculation method of Example 1 is used to calculate the response of the unequal-sensitivity geophone combination. The total number of geophones N in the geophone combination is 24, the maximum weighting coefficient a is 4, and the intra-group distance Δx is 5. The geophone combination is decomposed into four sub-combinations A and a linear sub-combination B. The decomposition schematic diagram is as shown in Figure 4 shown. The number of geophones in each sub-combination A is 6, and the intra-group distance Δx of each sub-combination A is a = 5. The number of geophones in the sub-combination B is 4, and the intra-group distance Δx of the sub-combination B is b = 5. Substituting the above parameters into the calculation formula of the response of the unequal-sensitivity geophone combination in Example 1, the response curve of the unequal-sensitivity geophone combination as shown in Figure 5 is obtained.

[0054] Example 4 A device, equipment, and medium for calculating the response of an unequal-sensitivity geophone combination

[0055] A device for calculating the response of an unequal-sensitivity geophone combination, the structural schematic diagram of which is as shown in Figure 6 shown, includes:

[0056] A basic parameter acquisition module for acquiring the basic parameters of the unequal-sensitivity geophone combination;

[0057] A decomposition module for decomposing the unequal-sensitivity geophone combination into at least one sub-combination A and a linear sub-combination B based on the acquired basic parameters;

[0058] A sub-combination response calculation module for calculating the responses of all sub-combinations A and the response of the sub-combination B;

[0059] An unequal-sensitivity combination response calculation module for superimposing the responses of all sub-combinations A and the response of the sub-combination B to obtain the response of the unequal-sensitivity geophone combination.

[0060] This embodiment also provides an electronic device, the structure of which is as shown in Figure 7 shown, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor. When the processor executes the computer program, the method described in Example 1 is implemented.

[0061] This embodiment also provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the method described in Example 1 is implemented.

Claims

1. A calculation method for the combined response of unequal sensitivities of geophones, characterized in that, It includes the following steps: S1. Obtain the basic parameters of the unequal-sensitivity combination of geophones; S2. Based on the basic parameters obtained in step S1, decompose the unequal-sensitivity combination of geophones into at least one sub-combination A and a linear sub-combination B; S3. Calculate the responses of all sub-combinations A and the response of sub-combination B; S4. Superimpose the responses of all sub-combinations A and the response of sub-combination B obtained in step S3, and the response of the unequal-sensitivity combination of geophones can be obtained.

2. The calculation method for the combined response of unequal sensitivities of geophones according to claim 1, characterized in that, In step S1, the unequal-sensitivity combination is a linear combination, and the basic parameters include the total number N of geophones, the maximum weighting coefficient a, and the group interval Δx.

3. The method for calculating the combined response of unequal sensitivities of a geophone according to claim 2, wherein, In step S2, the geophones in each sub - combination A are continuous along the survey line direction, the number of geophones in each sub - combination A is the same, the weighting coefficient of each sub - combination A is 1, the number of sub - combinations A is m, and m = a; the number of geophones in each sub - combination A is N a , The intra - group distance of each sub - combination A is Δx a , Δx a = Δx; the number of geophones in sub - combination B is N b , N b = a; the intra - group distance of sub - combination B is Δx b , Δx b = the distance between the centers of adjacent sub - combinations A along the survey line direction, and the distance between the centers of adjacent sub - combinations A along the survey line direction in all sub - combinations A is the same.

4. A method for calculating the combined response of unequal sensitivities of a geophone according to claim 3, characterized in that, The responses of all sub - combinations A in step S3 are The response of sub - combination B wherein, is a combination parameter.

5. The method for calculating the combined response of unequal sensitivities of geophones according to claim 4, wherein In step S4, the responses of all sub - combinations A and the responses of sub - combination B are superimposed. Specifically, it is to obtain the responses of all sub - combinations A as and the responses of sub - combination B for convolution. The calculation formula is: That is: Among them, is the response of the unequal sensitivity combination of geophones.

6. A computing device for the combined response of unequal sensitivities of geophones, characterized in that, It includes: A basic parameter acquisition module for obtaining the basic parameters of the unequal-sensitivity combination of geophones; A decomposition module for decomposing the unequal-sensitivity combination of geophones into at least one sub-combination A and a linear sub-combination B based on the obtained basic parameters; A sub-combination response calculation module for calculating the responses of all sub-combinations A and the response of sub-combination B; An unequal-sensitivity combination response calculation module for superimposing the responses of all sub-combinations A and the response of sub-combination B to obtain the response of the unequal-sensitivity combination of geophones.

7. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored on the memory and capable of running on the processor. When the processor executes the computer program, the method described in any one of claims 1-5 is implemented.

8. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium. When the computer program is executed by the processor, the method described in any one of claims 1-5 is implemented.

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