Wide-azimuth seismic signal processing method and device, equipment and storage medium

Abstract

The invention discloses a wide-azimuth seismic signal processing method and device, equipment and a storage medium. The method comprises the steps of performing pre-stack abnormal energy attenuation on an initial seismic signal, performing spectral analysis on a first signal, and determining a surface wave development frequency band; performing target frequency band surface wave noise attenuation on the first signal to obtain a second signal; determining a signal matched with a first shot point arrangement single shot, a signal matched with a second shot point arrangement single shot and a signal matched with a third shot point arrangement single shot in the second signal according to observation data and earth surface characteristics of the target area; and respectively processing signals matched with the first shot point arrangement single shot, the second shot point arrangement single shot and the third shot point arrangement single shot, and determining a target seismic signal. According to the technical scheme, the problems of poor denoising effect and low fidelity of wide-azimuth seismic signals are solved, the fidelity of deep and ultra-deep seismic signals can be greatly improved, and the imaging precision and the recognition precision of deep thin reservoirs, fractures and cracks can be improved.

Description

Technical Field

[0001] The present invention relates to the field of signal processing technology, and in particular to a method, device, electronic equipment and storage medium for processing wide-azimuth seismic signals. Background Art

[0002] With the continuous deepening of oil and gas exploration, the oil and gas exploration targets are gradually developing towards deep, ultra-deep, deep-water and unconventional oil and gas reservoirs. Wide-azimuth seismic data can obtain a more complete seismic wave field due to the increased acquisition illumination and the reduced blind area of ​​seismic observation, which is conducive to the fine identification of deep oil and gas geological targets and the fine characterization of faults. Deep oil and gas reservoirs are deeply buried and squeezed by high stress. The reservoirs have the characteristics of low porosity, low permeability and strong heterogeneity. Deep complex oil and gas reservoirs face the problems of weak seismic wave energy, low signal-to-noise ratio and low seismic visibility of deep targets.

[0003] At present, the denoising schemes for deep seismic signals mainly include FK domain filtering, FX domain filtering, polynomial fitting, KL transform, vector decomposition, curvelet transform, Radon transform, wavelet transform and other denoising methods. The common feature of the existing denoising schemes is that the seismic signal needs to be converted into a domain, and signal-noise separation and noise suppression are performed in different domains. However, for wide azimuth single shots or far-arranged single shots with large lateral shot-offset distances, the spatial sampling spacing of seismic signals in the conversion process of different domains is very uneven, which makes it difficult to meet the spatial sampling requirements of the conversion algorithms in different domains, which easily leads to damage of effective signals and cannot guarantee high-fidelity conversion of seismic signals. Summary of the invention

[0004] The present invention provides a wide-azimuth seismic signal processing method, device, equipment and storage medium to solve the problems of poor denoising effect and low fidelity of deep seismic signals. The fidelity of deep and ultra-deep seismic signals can be greatly improved, which is beneficial to improving the imaging accuracy and recognition accuracy of deep thin reservoirs, faults and cracks.

[0005] According to one aspect of the present invention, a method for processing wide-azimuth seismic signals is provided, the method comprising:

[0006] Acquire an initial seismic signal of a target area, perform prestack abnormal energy attenuation on the initial seismic signal, and obtain a first attenuated signal;

[0007] Performing spectrum analysis on the first attenuated signal to determine the frequency band of surface wave development;

[0008] According to the surface roll development frequency band, performing target frequency band surface roll noise attenuation on the first attenuated signal to obtain a second attenuated signal;

[0009] According to the observation data and the surface characteristics of the target area, determining the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching and the signal of the third shot point arrangement single shot matching in the second attenuated signal;

[0010] The signal of the single shot matching of the first shot point arrangement, the signal of the single shot matching of the second shot point arrangement and the signal of the single shot matching of the third shot point arrangement are processed respectively to determine the target seismic signal.

[0011] According to another aspect of the present invention, there is provided a device for processing wide-azimuth seismic signals, the device comprising:

[0012] A first signal generating module is used to obtain an initial seismic signal of a target area, and perform prestack abnormal energy attenuation on the initial seismic signal to obtain a first attenuated signal;

[0013] A surface wave frequency band determination module is used to perform spectrum analysis on the first attenuated signal to determine the surface wave development frequency band;

[0014] A second signal generating module is used to perform target frequency band surface roll noise attenuation on the first attenuated signal according to the surface roll development frequency band to obtain a second attenuated signal;

[0015] An arrangement signal determination module is used to determine, in the second attenuated signal, a signal of a first shot point arrangement single shot match, a signal of a second shot point arrangement single shot match, and a signal of a third shot point arrangement single shot match according to the observation data and surface features of the target area;

[0016] The target signal determination module is used to process the signal of the single shot matching of the first shot point arrangement, the signal of the single shot matching of the second shot point arrangement and the signal of the single shot matching of the third shot point arrangement respectively to determine the target seismic signal.

[0017] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0018] at least one processor; and

[0019] a memory communicatively connected to the at least one processor; wherein,

[0020] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for processing wide-azimuth seismic signals described in any embodiment of the present invention.

[0021] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to implement the method for processing wide-azimuth seismic signals described in any embodiment of the present invention when executed by a processor.

[0022] The technical solution of the embodiment of the present invention obtains the initial seismic signal of the target area, performs prestack abnormal energy attenuation on the initial seismic signal, and obtains the first attenuated signal; then performs spectrum analysis on the first attenuated signal to determine the surface wave development frequency band, and performs target frequency band surface wave noise attenuation on the first attenuated signal according to the surface wave development frequency band to obtain the second attenuated signal; then, according to the observation data and surface characteristics of the target area, the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching, and the signal of the third shot point arrangement single shot matching are determined in the second attenuated signal; finally, the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching, and the signal of the third shot point arrangement single shot matching are processed respectively to determine the target seismic signal. The technical solution solves the problems of poor denoising effect and low fidelity of wide azimuth seismic signals, can greatly improve the fidelity of deep and ultra-deep seismic signals, and is conducive to improving the imaging accuracy and recognition accuracy of deep thin reservoirs, faults and cracks.

[0023] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 is a flow chart of a method for processing wide-azimuth seismic signals provided according to Embodiment 1 of the present invention;

[0026] Figure 2A is a flow chart of a method for processing wide-azimuth seismic signals provided according to Embodiment 2 of the present invention;

[0027] Figure 2B 2 is a schematic diagram of noise characteristics of a single shot arranged near the shot point according to the second embodiment of the present invention;

[0028] Figure 2C 2 is a schematic diagram of the noise characteristics of a single shot in a central shot arrangement according to the second embodiment of the present invention;

[0029] Figure 2D Schematic diagram of single shot noise characteristics in a far shot arrangement according to Embodiment 2 of the present invention;

[0030] Figure 2E is a schematic diagram comparing the results of decomposition denoising and non-decomposition denoising provided by the second embodiment of the present invention;

[0031] Figure 3 is a schematic structural diagram of a wide-azimuth seismic signal processing device provided according to Embodiment 3 of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of an electronic device for implementing the method for processing wide-azimuth seismic signals according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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 only 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 should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. The acquisition, storage, use, processing, etc. of data in the technical solution of this application comply with the relevant provisions of national laws and regulations.

[0035] Embodiment 1

[0036] Figure 1 A flowchart of a method for processing wide-azimuth seismic signals is provided for the first embodiment of the present invention. This embodiment is applicable to the interpretation of seismic data, and is particularly applicable to the denoising of seismic signals. The method can be executed by a processing device for wide-azimuth seismic signals, which can be implemented in the form of hardware and / or software, and can be configured in an electronic device. Figure 1 As shown, the method includes:

[0037] S110, acquiring an initial seismic signal of a target area, performing pre-stack abnormal energy attenuation on the initial seismic signal, and obtaining a first attenuated signal.

[0038] This scheme can be executed by a seismic signal processing system, and the seismic signal processing system can obtain the initial seismic signal of the target area. Among them, the initial seismic signal can be a wide-azimuth seismic signal. Due to the increase in the acquisition illumination, wide-azimuth seismic observation can obtain a more complete seismic wave field, reduce the blind area of ​​seismic observation, and is conducive to studying the changes in amplitude with shot offset and azimuth and the changes in formation velocity with azimuth, improving the imaging accuracy and recognition accuracy of deep thin reservoirs, faults and cracks, and having high amplitude fidelity. It has obvious advantages in imaging of high-steep structures and complex fault blocks, and predicting lithology and fracture-type reservoirs. After obtaining the initial seismic signal, the seismic signal processing system can perform pre-stack abnormal energy attenuation on the initial seismic signal to suppress the pre-stack noise and obtain the first attenuated signal.

[0039] S120: Perform spectrum analysis on the first attenuated signal to determine a surface roll development frequency band.

[0040] It can be understood that the seismic signal processing system performs spectrum analysis on the first attenuated signal and performs frequency division scanning to determine the development frequency band of the surface wave.

[0041] S130 , performing target frequency band surface roll noise attenuation on the first attenuated signal according to the surface roll development frequency band to obtain a second attenuated signal.

[0042] According to the surface wave development frequency band, the seismic signal processing system can perform target frequency band surface wave noise attenuation on the first attenuated signal to remove low-frequency surface wave noise. The target frequency band can be a preset low-frequency frequency range. After performing the target frequency band surface wave noise attenuation, a second attenuated signal containing medium and high-speed noise can be obtained.

[0043] S140, determining, in the second attenuated signal, a signal of a single shot matching of a first shot point arrangement, a signal of a single shot matching of a second shot point arrangement, and a signal of a single shot matching of a third shot point arrangement according to the observation data and the surface characteristics of the target area.

[0044] The seismic signal processing system can obtain observation data through the observation system of the target area, and extract the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching, and the signal of the third shot point arrangement single shot matching from the second attenuated signal according to the observation data and the surface characteristics of the target area. Among them, the first shot point arrangement single shot can be a near shot point arrangement single shot, the second shot point arrangement single shot can be a middle shot point arrangement single shot, and the third shot point arrangement single shot can be a far shot point arrangement single shot.

[0045] S150, respectively process the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching, and the signal of the third shot point arrangement single shot matching to determine the target seismic signal.

[0046] It is easy to understand that, according to the single-shot noise characteristics of different shot point arrangements, the seismic signal processing system can perform noise reduction processing on the signal of the single-shot matching of the first shot point arrangement, the signal of the single-shot matching of the second shot point arrangement, and the signal of the single-shot matching of the third shot point arrangement, respectively, to obtain a high-fidelity target seismic signal.

[0047] The technical solution of the embodiment of the present invention obtains the initial seismic signal of the target area, performs prestack abnormal energy attenuation on the initial seismic signal, and obtains the first attenuated signal; then performs spectrum analysis on the first attenuated signal to determine the surface wave development frequency band, and performs target frequency band surface wave noise attenuation on the first attenuated signal according to the surface wave development frequency band to obtain the second attenuated signal; then, according to the observation data and surface characteristics of the target area, the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching, and the signal of the third shot point arrangement single shot matching are determined in the second attenuated signal; finally, the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching, and the signal of the third shot point arrangement single shot matching are processed respectively to determine the target seismic signal. The technical solution solves the problems of poor denoising effect and low fidelity of deep seismic signals, can greatly improve the fidelity of deep and ultra-deep seismic signals, and is conducive to improving the imaging accuracy and recognition accuracy of deep thin reservoirs, faults and cracks.

[0048] Embodiment 2

[0049] Figure 2A This is a flow chart of a method for processing wide-azimuth seismic signals provided in the second embodiment of the present invention. This embodiment is based on the above embodiment and is refined. Figure 2A As shown, the method includes:

[0050] S210, acquiring an initial seismic signal of a target area, performing pre-stack abnormal energy attenuation on the initial seismic signal, and obtaining a first attenuated signal.

[0051] S220, performing spectrum analysis on the first attenuated signal to determine a surface roll development frequency band.

[0052] S230 , performing target frequency band surface roll noise attenuation on the first attenuated signal according to the surface roll development frequency band to obtain a second attenuated signal.

[0053] S240, determining, in the second attenuated signal, a signal of a single shot matching of a first shot point arrangement, a signal of a single shot matching of a second shot point arrangement, and a signal of a single shot matching of a third shot point arrangement according to the observation data and the surface characteristics of the target area.

[0054] In this solution, the first gun point arrangement single gun may be a near gun point arrangement single gun, the second gun point arrangement single gun may be a middle gun point arrangement single gun, and the third gun point arrangement single gun may be a far gun point arrangement single gun.

[0055] S250, the signal of the single shot matching of the first shot point arrangement is processed according to the first process to obtain a first target signal, the signal of the single shot matching of the second shot point arrangement is processed according to the second process to obtain a second target signal, and the signal of the single shot matching of the third shot point arrangement is processed according to the third process to obtain a third target signal.

[0056] It is understandable that the signal of the first shot point arrangement single shot matching contains the near shot point arrangement single shot noise. Figure 2B Schematic diagram of the noise characteristics of a single shot arranged near the shot point according to the second embodiment of the present invention. Figure 2B As shown, the noise of a single shot near the shot point arrangement is linearly distributed. Therefore, the seismic signal processing system can perform noise reduction processing on the signal of the single shot matching of the first shot point arrangement according to the linear noise processing process to obtain the first target signal.

[0057] The signal of the second shot point arrangement single shot matching contains the middle shot point arrangement single shot noise. Figure 2C 1 is a schematic diagram of the noise characteristics of a single shot arranged in a central shot point according to the second embodiment of the present invention. Figure 2C As shown, the single shot noise of the middle shot point arrangement is approximately linearly distributed. Therefore, the seismic signal processing system can perform noise reduction processing on the signal matched by the single shot of the second shot point arrangement according to the approximately linear noise processing process to obtain the second target signal.

[0058] The signal of the third shot point arrangement single shot matching contains the noise of the distant shot point arrangement single shot. Figure 2D Schematic diagram of the noise characteristics of a single shot arranged at a long distance according to the second embodiment of the present invention. Figure 2D As shown, the single shot noise of the distant shot point arrangement is approximately hyperbolic distribution. Therefore, the seismic signal processing system can perform noise reduction processing on the single shot matching signal of the third shot point arrangement according to the approximately hyperbolic noise processing process to obtain the third target signal.

[0059] In this solution, optionally, the signal of the single shot matching of the first shot point arrangement is processed according to the first process to obtain the first target signal, including:

[0060] Perform linear noise attenuation on the signal of single shot matching of the first shot point arrangement to obtain the first target signal.

[0061] For the single shot noise of close shot point arrangement, the seismic signal processing system can perform linear noise attenuation on the signal matched by the single shot of the first shot point arrangement to reduce linear noise interference and obtain the first target signal, that is, the high-fidelity effective signal of the single shot of close shot point arrangement.

[0062] In a feasible solution, the signal of the second shot point arrangement single shot matching is processed according to the second process to obtain the second target signal, including:

[0063] Performing linear noise attenuation on the signal of the second shot point arrangement single shot matching to obtain an attenuated signal of the second shot point arrangement single shot matching and an attenuated noise of the second shot point arrangement single shot matching;

[0064] Performing dynamic correction processing on the attenuated noise of the second shot point arrangement single shot matching, and extracting the target correction signal of the second shot point arrangement single shot matching from the dynamic correction noise;

[0065] A second target signal is determined according to the target correction signal and the attenuated signal of the second shot point arrangement single shot matching.

[0066] For the single shot noise of the middle shot point arrangement, the seismic signal processing system can perform linear noise attenuation on the signal matched by the single shot of the second shot point arrangement. Since the single shot noise of the middle shot point arrangement is not completely linear noise, the attenuated signal and attenuated noise can be obtained after linear noise attenuation on the signal matched by the single shot of the second shot point arrangement.

[0067] The seismic signal processing system can perform dynamic correction processing on the attenuated noise of the second shot point arrangement single shot matching to obtain the dynamic correction noise. In the dynamic correction noise, the seismic signal processing system can extract the target correction signal of the second shot point arrangement single shot matching, that is, the weak effective signal. According to the target correction signal and the attenuated signal of the second shot point arrangement single shot matching, the seismic signal processing system can obtain the second target signal, that is, the high-fidelity effective signal of the middle shot point arrangement single shot.

[0068] On the basis of the above scheme, determining the second target signal according to the target correction signal and the attenuated signal of the second shot point arrangement single shot matching includes:

[0069] Performing a reaction correction process on the target correction signal to obtain a target attenuation signal;

[0070] The target attenuated signal is superimposed with the attenuated signal of the second shot point arrangement single shot matching to obtain a second target signal.

[0071] The seismic signal processing system can perform reaction correction processing on the target correction signal to obtain a weak effective signal with noise removed. The target correction signal is reconstructed with the attenuated signal of the second shot point arrangement single shot matching to obtain a second target signal.

[0072] In this embodiment, optionally, the signal of single shot matching of the third shot point arrangement is processed according to a third process to obtain a third target signal, including:

[0073] Linearizing the signal of the single shot matching of the third shot point arrangement to obtain a linear signal of the single shot matching of the third shot point arrangement;

[0074] Performing linear noise attenuation on the linear signal of the third shot point arrangement single shot matching to obtain the linear attenuated signal of the third shot point arrangement single shot matching and the linear attenuated noise of the third shot point arrangement single shot matching;

[0075] A third target signal is determined based on a linear attenuation signal of a single shot matching of the third shot point arrangement and a linear attenuation noise of a single shot matching of the third shot point arrangement.

[0076] Since the single shot noise of the middle shot point arrangement is approximately hyperbolic in distribution, the seismic signal processing system can perform linear processing on the single shot matching signal of the third shot point arrangement to obtain the linear signal of the single shot matching of the third shot point arrangement.

[0077] After obtaining the linear signal of the third shot point arrangement single shot matching, similar to the signal processing of the second shot point arrangement single shot, the seismic signal processing system can perform linear noise attenuation on the linear signal of the third shot point arrangement single shot matching to obtain the linear attenuation signal of the third shot point arrangement single shot matching and the linear attenuation noise of the third shot point arrangement single shot matching. According to the linear attenuation signal of the third shot point arrangement single shot matching and the linear attenuation noise of the third shot point arrangement single shot matching, the seismic signal processing system can obtain the third target signal, i.e., the high-fidelity effective signal of the far shot point arrangement single shot.

[0078] On the basis of the above scheme, the method of determining the third target signal according to the linear attenuation signal of the single shot matching of the third shot point arrangement and the linear attenuation noise of the single shot matching of the third shot point arrangement includes:

[0079] Performing inverse linearization processing on the linear attenuation signal of the third shot point arrangement single shot matching to obtain an attenuated signal of the third shot point arrangement single shot matching, and performing inverse linearization processing on the linear attenuation noise of the third shot point arrangement single shot matching to obtain an attenuated noise of the third shot point arrangement single shot matching;

[0080] Performing dynamic correction processing on the attenuated noise of the single shot matching of the third shot point arrangement, and extracting the target correction signal of the single shot matching of the third shot point arrangement from the dynamic correction noise;

[0081] A third target signal is determined according to the target correction signal and the attenuated signal of the single shot matching of the third shot point arrangement.

[0082] The seismic signal processing system can perform inverse linearization processing on the linear attenuation signal of the third shot point arrangement single shot matching and the linear attenuation noise of the third shot point arrangement single shot matching, and obtain the attenuated signal and attenuated noise of the third shot point arrangement single shot matching respectively. By performing dynamic correction processing on the linear attenuation signal of the third shot point arrangement single shot matching, the target correction signal of the third shot point arrangement single shot matching can be extracted from the dynamic correction noise, that is, the weak effective signal in the far shot point arrangement single shot noise.

[0083] The seismic signal processing system can perform reaction correction processing on the target correction signal of the third shot point arrangement single shot matching to obtain a target attenuation signal, that is, a weak effective signal corresponding to the third shot point arrangement single shot with noise removed. The target attenuation signal is superimposed and reconstructed with the attenuated signal of the third shot point arrangement single shot matching to obtain a third target signal.

[0084] S260. Determine a target seismic signal according to the first target signal, the second target signal, and the third target signal.

[0085] The first target signal, the second target signal and the third target signal are superimposed to obtain a target seismic signal.

[0086] Figure 2E FIG. 1 is a schematic diagram comparing the results of decomposition denoising and non-decomposition denoising provided by the second embodiment of the present invention. Figure 2E As shown in FIG. 1 , in a specific example, compared with the denoising results obtained by processing the wide-azimuth seismic signals of region A using denoising methods such as FK domain filtering and FX domain filtering, the seismic signal fidelity obtained by the decomposition denoising method of this scheme is higher, especially in Figure 2E The middle arrow indicates the position. The seismic signal processing method of this scheme is more capable of protecting the weak effective signals in deep or ultra-deep layers and improving the signal-to-noise ratio of seismic signal noise attenuation.

[0087] The technical solution of the embodiment of the present invention obtains the initial seismic signal of the target area, performs prestack abnormal energy attenuation on the initial seismic signal, and obtains the first attenuated signal; then performs spectrum analysis on the first attenuated signal to determine the surface wave development frequency band, and performs target frequency band surface wave noise attenuation on the first attenuated signal according to the surface wave development frequency band to obtain the second attenuated signal; then, according to the observation data and surface characteristics of the target area, the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching, and the signal of the third shot point arrangement single shot matching are determined in the second attenuated signal; finally, the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching, and the signal of the third shot point arrangement single shot matching are processed respectively to determine the target seismic signal. The technical solution solves the problems of poor denoising effect and low fidelity of deep seismic signals, can greatly improve the fidelity of deep and ultra-deep seismic signals, and is conducive to improving the imaging accuracy and recognition accuracy of deep thin reservoirs, faults and cracks.

[0088] Embodiment 3

[0089] Figure 3 This is a schematic diagram of the structure of a wide-azimuth seismic signal processing device provided in Embodiment 3 of the present invention. Figure 3 As shown, the device comprises:

[0090] The first signal generating module 310 is used to obtain an initial seismic signal of a target area, and perform prestack abnormal energy attenuation on the initial seismic signal to obtain a first attenuated signal;

[0091] A surface roll frequency band determination module 320 is used to perform spectrum analysis on the first attenuated signal to determine a surface roll development frequency band;

[0092] The second signal generating module 330 is used to perform target frequency band surface roll noise attenuation on the first attenuated signal according to the surface roll development frequency band to obtain a second attenuated signal;

[0093] Arrangement signal determination module 340, for determining a signal of single shot matching of the first shot point arrangement, a signal of single shot matching of the second shot point arrangement, and a signal of single shot matching of the third shot point arrangement in the second attenuated signal according to the observation data and the surface characteristics of the target area;

[0094] The target signal determination module 350 is used to process the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching and the signal of the third shot point arrangement single shot matching respectively to determine the target seismic signal.

[0095] In this solution, optionally, the target signal determination module 350 includes:

[0096] an arrangement signal processing unit, configured to process the signal of the first shot point arrangement single shot matching according to a first process to obtain a first target signal, process the signal of the second shot point arrangement single shot matching according to a second process to obtain a second target signal, and process the signal of the third shot point arrangement single shot matching according to a third process to obtain a third target signal;

[0097] The target seismic signal determination unit is used to determine the target seismic signal according to the first target signal, the second target signal and the third target signal.

[0098] On the basis of the above scheme, optionally, the arrangement signal processing unit includes a first arrangement signal processing subunit, and the first arrangement signal processing subunit is used to perform linear noise attenuation on the signal of single-shot matching of the first shot point arrangement to obtain a first target signal.

[0099] In a feasible solution, the arrangement signal processing unit includes a second arrangement signal processing subunit, and the second arrangement signal processing subunit is used to:

[0100] Performing linear noise attenuation on the signal of the second shot point arrangement single shot matching to obtain an attenuated signal of the second shot point arrangement single shot matching and an attenuated noise of the second shot point arrangement single shot matching;

[0101] Performing dynamic correction processing on the attenuated noise of the second shot point arrangement single shot matching, and extracting the target correction signal of the second shot point arrangement single shot matching from the dynamic correction noise;

[0102] A second target signal is determined according to the target correction signal and the attenuated signal of the second shot point arrangement single shot matching.

[0103] On the basis of the above solution, the second arrangement signal processing subunit is specifically used for:

[0104] Performing a reaction correction process on the target correction signal to obtain a target attenuation signal;

[0105] The target attenuated signal is superimposed with the attenuated signal of the second shot point arrangement single shot matching to obtain a second target signal.

[0106] In a preferred embodiment, the arrangement signal processing unit includes a third arrangement signal processing subunit, and the third arrangement signal processing subunit is used to:

[0107] Linearizing the signal of the single shot matching of the third shot point arrangement to obtain a linear signal of the single shot matching of the third shot point arrangement;

[0108] Performing linear noise attenuation on the linear signal of the third shot point arrangement single shot matching to obtain the linear attenuated signal of the third shot point arrangement single shot matching and the linear attenuated noise of the third shot point arrangement single shot matching;

[0109] A third target signal is determined based on a linear attenuation signal of a single shot matching of the third shot point arrangement and a linear attenuation noise of a single shot matching of the third shot point arrangement.

[0110] Based on the above solution, optionally, the third arrangement signal processing subunit is specifically used to:

[0111] Performing inverse linearization processing on the linear attenuation signal of the third shot point arrangement single shot matching to obtain an attenuated signal of the third shot point arrangement single shot matching, and performing inverse linearization processing on the linear attenuation noise of the third shot point arrangement single shot matching to obtain an attenuated noise of the third shot point arrangement single shot matching;

[0112] Performing dynamic correction processing on the attenuated noise of the single shot matching of the third shot point arrangement, and extracting the target correction signal of the single shot matching of the third shot point arrangement from the dynamic correction noise;

[0113] A third target signal is determined according to the target correction signal and the attenuated signal of the single shot matching of the third shot point arrangement.

[0114] The wide-azimuth seismic signal processing device provided in the embodiment of the present invention can execute the wide-azimuth seismic signal processing method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0115] Embodiment 4

[0116] Figure 4 A schematic diagram of an electronic device 410 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0117] like Figure 4As shown, the electronic device 410 includes at least one processor 411, and a memory connected to the at least one processor 411 in communication, such as a read-only memory (ROM) 412, a random access memory (RAM) 413, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 411 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 412 or the computer program loaded from the storage unit 418 to the random access memory (RAM) 413. In the RAM 413, various programs and data required for the operation of the electronic device 410 can also be stored. The processor 411, the ROM 412, and the RAM 413 are connected to each other via a bus 414. An input / output (I / O) interface 415 is also connected to the bus 414.

[0118] Multiple components in the electronic device 410 are connected to the I / O interface 415, including: an input unit 416, such as a keyboard, a mouse, etc.; an output unit 417, such as various types of displays, speakers, etc.; a storage unit 418, such as a disk, an optical disk, etc.; and a communication unit 419, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 419 allows the electronic device 410 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0119] The processor 411 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 411 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 411 performs the various methods and processes described above, such as a method for processing wide-azimuth seismic signals.

[0120] In some embodiments, the method for processing wide azimuth seismic signals may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 418. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 410 via the ROM 412 and / or the communication unit 419. When the computer program is loaded into the RAM 413 and executed by the processor 411, one or more steps of the method for processing wide azimuth seismic signals described above may be performed. Alternatively, in other embodiments, the processor 411 may be configured to perform the method for processing wide azimuth seismic signals in any other appropriate manner (e.g., by means of firmware).

[0121] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0122] The computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer or other programmable wide-azimuth seismic signal processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0123] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0124] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0125] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0126] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0127] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0128] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for processing wide-azimuth seismic signals, characterized in that: The method comprises: Acquire an initial seismic signal of a target area, perform prestack abnormal energy attenuation on the initial seismic signal, and obtain a first attenuated signal; Performing spectrum analysis on the first attenuated signal to determine the frequency band of surface wave development; According to the surface roll development frequency band, performing target frequency band surface roll noise attenuation on the first attenuated signal to obtain a second attenuated signal; According to the observation data and the surface characteristics of the target area, determining the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching and the signal of the third shot point arrangement single shot matching in the second attenuated signal; The signal of the single shot matching of the first shot point arrangement, the signal of the single shot matching of the second shot point arrangement and the signal of the single shot matching of the third shot point arrangement are processed respectively to determine the target seismic signal.

2. The method according to claim 1, characterized in that The method of processing the signal of the first shot point arrangement single shot matching, the signal of the second shot point arrangement single shot matching and the signal of the third shot point arrangement single shot matching to determine the target seismic signal comprises: The signal of the first shot point arrangement single shot matching is processed according to the first process to obtain a first target signal, the signal of the second shot point arrangement single shot matching is processed according to the second process to obtain a second target signal, and the signal of the third shot point arrangement single shot matching is processed according to the third process to obtain a third target signal; A target seismic signal is determined according to the first target signal, the second target signal and the third target signal.

3. The method according to claim 2, characterized in that The signal of the first shot point arrangement single shot matching is processed according to the first process to obtain the first target signal, including: Perform linear noise attenuation on the signal of single shot matching of the first shot point arrangement to obtain the first target signal.

4. The method according to claim 2, characterized in that: The signal of the single shot matching of the second shot point arrangement is processed according to the second process to obtain the second target signal, including: Performing linear noise attenuation on the signal of the second shot point arrangement single shot matching to obtain an attenuated signal of the second shot point arrangement single shot matching and an attenuated noise of the second shot point arrangement single shot matching; Performing dynamic correction processing on the attenuated noise of the second shot point arrangement single shot matching, and extracting the target correction signal of the second shot point arrangement single shot matching from the dynamic correction noise; A second target signal is determined based on the target correction signal and the attenuated signal of the second shot point arrangement single shot matching.

5. The method according to claim 4, characterized in that The step of determining a second target signal according to the target correction signal and the attenuated signal of the second shot point arrangement single shot matching comprises: Performing a reaction correction process on the target correction signal to obtain a target attenuation signal; The target attenuated signal is superimposed with the attenuated signal of the second shot point arrangement single shot matching to obtain a second target signal.

6. The method according to claim 2, characterized in that The signal of the single shot matching of the third shot point arrangement is processed according to the third process to obtain the third target signal, including: Linearizing the signal of the single shot matching of the third shot point arrangement to obtain a linear signal of the single shot matching of the third shot point arrangement; Performing linear noise attenuation on the linear signal of the third shot point arrangement single shot matching to obtain the linear attenuated signal of the third shot point arrangement single shot matching and the linear attenuated noise of the third shot point arrangement single shot matching; A third target signal is determined based on a linear attenuation signal of a single shot matching of the third shot point arrangement and a linear attenuation noise of a single shot matching of the third shot point arrangement.

7. The method according to claim 6, characterized in that The determining of the third target signal according to the linear attenuation signal of the single shot matching of the third shot point arrangement and the linear attenuation noise of the single shot matching of the third shot point arrangement includes: Performing inverse linearization processing on the linear attenuation signal of the third shot point arrangement single shot matching to obtain an attenuated signal of the third shot point arrangement single shot matching, and performing inverse linearization processing on the linear attenuation noise of the third shot point arrangement single shot matching to obtain an attenuated noise of the third shot point arrangement single shot matching; Performing dynamic correction processing on the attenuated noise of the single shot matching of the third shot point arrangement, and extracting the target correction signal of the single shot matching of the third shot point arrangement from the dynamic correction noise; A third target signal is determined according to the target correction signal and the attenuated signal of the single shot matching of the third shot point arrangement.

8. A processing device for wide-azimuth seismic signals, characterized in that: include: A first signal generating module is used to obtain an initial seismic signal of a target area, and perform prestack abnormal energy attenuation on the initial seismic signal to obtain a first attenuated signal; A surface wave frequency band determination module is used to perform spectrum analysis on the first attenuated signal to determine the surface wave development frequency band; A second signal generating module is used to perform target frequency band surface roll noise attenuation on the first attenuated signal according to the surface roll development frequency band to obtain a second attenuated signal; An arrangement signal determination module is used to determine, in the second attenuated signal, a signal of a first shot point arrangement single shot match, a signal of a second shot point arrangement single shot match, and a signal of a third shot point arrangement single shot match according to the observation data and surface features of the target area; The target signal determination module is used to process the signal of the single shot matching of the first shot point arrangement, the signal of the single shot matching of the second shot point arrangement and the signal of the single shot matching of the third shot point arrangement respectively to determine the target seismic signal.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the method for processing wide-azimuth seismic signals according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for processing wide-azimuth seismic signals according to any one of claims 1 to 7 when executed.

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