An anisotropy investigation method, device, electronic equipment and storage medium
By combining controlled source excitation of transverse and longitudinal waves with a radial three-component geophone array, single-shot records of seismic waves are recorded and analyzed, solving the problem of seismic wave field simulation errors in anisotropic media and improving the accuracy and reliability of seismic exploration.
Patent Information
- Application Number
- CN202111131916.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-09-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2041-09-26
AI Technical Summary
Existing numerical simulations of seismic wavefields in anisotropic media contain errors, affecting the accuracy and reliability of seismic exploration.
Controlled source excitation using transverse and longitudinal waves, combined with a radial three-component geophone array, was employed to record single-shot data. The amplitude and energy response characteristics in different directions were analyzed using seismic data processing software to determine the anisotropy characteristics of the seismic waves.
This improves the accuracy and reliability of investigating the propagation patterns of seismic waves in anisotropic media, reduces errors in experimental results, and enhances the effectiveness of seismic exploration.
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Figure CN115877443B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of petroleum seismic exploration technology, and in particular to an anisotropic survey method, apparatus, electronic equipment, and storage medium. Background Technology
[0002] The propagation of seismic waves in anisotropic media is one of the most studied and researched topics in seismology today, and also one of the most challenging aspects of the field. Seismic wave anisotropy reflects the dynamic processes within the Earth, and can be used to study various aspects of geological conditions, including hydrocarbon content, stratigraphic development, fracture and porosity development, and stress field orientation analysis.
[0003] Currently, most domestic methods employ the establishment of random media and various corresponding algorithms to conduct numerical simulations of seismic wave fields in anisotropic media, studying the propagation laws of seismic waves in anisotropic media. However, existing anisotropic media investigation methods are based on simulated experiments, and there are still certain errors compared to the anisotropic characteristics of seismic wave propagation observed during actual seismic exploration. Summary of the Invention
[0004] This invention provides an anisotropy investigation method, apparatus, electronic device, and storage medium to improve the accuracy and reliability of anisotropy investigation experimental results.
[0005] To address the aforementioned problems, according to a first aspect of the present invention, an anisotropy investigation method is provided, the method comprising:
[0006] The excitation parameters of the controllable source are obtained, the observation direction and the length of the single-sided receiver array are determined, and the azimuth and number of the single-sided receiver array are determined. The controllable source includes a shear wave controllable source and a longitudinal wave controllable source.
[0007] The three-component geophones are arranged in series with the controllable source excitation point as the center, the single-sided receiving arrangement length as the radius, and the seismic exploration observation direction as the starting point. The three-component geophones are arranged in series with the azimuth angle and the number of rows, filling the entire circle, to obtain a radial three-component geophone receiving arrangement.
[0008] The shear wave controllable source, according to the excitation parameters, excites shear waves according to the arrangement direction of the radial three-component detector receiving array, and records the azimuth angle of the shear wave controllable source excitation. The longitudinal wave controllable source excites longitudinal waves once in any direction, and all radial three-component detector receiving arrays are activated to receive the waves, forming a single-shot record.
[0009] The seismic data processing software processes the single-shot record to obtain first data, extracts the first data of single-shot records in different directions for vector rotation, compares and analyzes amplitude and energy response characteristics of the first data in different directions, and determines variation trends of amplitude and energy response.
[0010] Optionally, the excitation parameters include shear wave excitation parameters and longitudinal wave excitation parameters, the shear wave excitation parameters include a shear wave type, a number of excitation platforms, and a number of times, and the shear wave excitation parameters are obtained according to actual requirements of solving a geological task by shear wave seismic exploration.
[0011] Optionally, the length of the single-side receiving arrangement is determined according to actual requirements of observing a deepest target layer in shear wave seismic exploration.
[0012] Optionally, the determination of the layout azimuth angle and the number of the single-side receiving arrangement includes:
[0013] The layout azimuth angle is not less than 5° and not more than 45°, and the number of the single-side receiving arrangement is calculated according to the following formula:
[0014] N = 360° / θ
[0015] Wherein, N represents the number of the single-side receiving arrangement, and θ represents an included angle between two single-side receiving arrangements.
[0016] Optionally, the radial three-component geophone receiving arrangement is activated for receiving when the longitudinal wave vibroseis and the shear wave vibroseis are excited.
[0017] Optionally, the seismic data processing software processes the single-shot record to obtain first data includes:
[0018] The seismic data processing software extracts X, Y, and Z components from the single-shot record obtained by the single-side receiving arrangement in different directions to form single-shot records of different components, processes the received single-shot records of different components, analyzes data quality of the single-shot records of different components, compares and analyzes data quality appearances and signal-to-noise ratios of seismic waves of the single-shot records of different components, and obtains the first data.
[0019] Wherein, the first data is a component single-shot record with the best data quality appearance in the single-shot records of different components.
[0020] Optionally, the extraction of the first data of single-shot records in different directions for vector rotation includes:
[0021] The first data of different layout directions of the single-side receiving arrangement is vector-rotated to the same direction as the excitation direction of the transverse wave vibroseis according to the recorded excitation direction of the transverse wave vibroseis, Fourier transform is performed on the longitudinal and transverse wave emission information in the main target layer time window, the amplitude spectrum and the frequency spectrum of the first data of different layout directions of the single-side receiving arrangement are taken respectively, and the anisotropy characteristics of different types of seismic waves are plotted according to the amplitude spectrum and the frequency spectrum.
[0022] According to a second aspect of the present application, there is provided an anisotropy investigation device, the device comprising:
[0023] An acquisition module is configured to acquire excitation parameters of a vibroseis, determine an observation direction of seismic exploration and a length of a single-side receiving arrangement, and determine a layout direction angle and a number of the single-side receiving arrangement, wherein the vibroseis comprises a transverse wave vibroseis and a longitudinal wave vibroseis.
[0024] A pre-receiving module is configured to arrange serial three-component geophones on a radial receiving arrangement with the single-side receiving arrangement length as a radius, the layout direction angle and the number of the single-side receiving arrangement, and the vibroseis excitation point as a center, and the observation direction of the seismic exploration as a starting point, so as to obtain a radial three-component geophone receiving arrangement.
[0025] A receiving module is configured to excite a transverse wave by the transverse wave vibroseis according to the excitation parameters and the arrangement direction of the radial three-component geophone receiving arrangement, record the excitation direction angle of the transverse wave vibroseis, excite a longitudinal wave in an arbitrary direction by the longitudinal wave vibroseis, and activate all the radial three-component geophone receiving arrangement to form a single-shot record.
[0026] A processing module is configured to process the single-shot record by seismic data processing software, acquire first data, extract the first data of single-shot records in different directions for vector rotation, compare and analyze amplitude and energy response characteristics of the first data in different directions, and determine a change trend of the amplitude and the energy response.
[0027] According to a third aspect of the present application, there is provided an electronic device, comprising:
[0028] at least one processor; and
[0029] a memory connected with the at least one processor; wherein
[0030] the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the anisotropy investigation method described above.
[0031] According to a fourth aspect of the present application, a computer readable storage medium is provided, which stores a computer program, and the computer program, when executed by a processor, implements the anisotropy investigation method described above.
[0032] Compared with the prior art, the present application uses experimental conditions according to actual needs, uses a specific receiving arrangement device, receives P and S waves simulated by a controllable source, analyzes and processes actual acquired experimental data, and implements specific experiments, so that the experimental results obtained by investigating anisotropy by numerical simulation have much less errors and are more reliable. BRIEF DESCRIPTION OF DRAWINGS
[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0034] Figure 1 A flowchart of an anisotropy investigation method according to an embodiment of the present application;
[0035] Figure 2 A schematic diagram of a radial receiving arrangement distribution with a fixed included angle of 30° according to an embodiment of the present application;
[0036] Figure 3 A schematic diagram of seismic single-shot records of different components of the same layout direction excited by a S-wave controllable source according to an embodiment of the present application;
[0037] Figure 4 A schematic diagram of amplitude spectra of a main target layer of single-shot records of different layout directions according to an embodiment of the present application;
[0038] Figure 5 A schematic diagram of frequency spectra of a main target layer of single-shot records of different layout directions according to an embodiment of the present application;
[0039] Figure 6 A schematic diagram of amplitude spectra of seismic waves of different layout directions according to an embodiment of the present application;
[0040] Figure 7 A schematic diagram of frequency spectrum anisotropy of seismic waves of different layout directions according to an embodiment of the present application;
[0041] Figure 8 A structural schematic diagram of an anisotropy investigation device according to an embodiment of the present application. DETAILED DESCRIPTION
[0042] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.
[0043] The specific implementation manners of the embodiments of the present application will be described in further detail below with reference to the drawings.
[0044] The first embodiment of the present application relates to an anisotropy investigation method, a flow chart of which is shown in Figure 1 The method comprises the following steps:
[0045] S101, acquiring excitation parameters of a controllable source, determining an observation direction and a single-side receiving arrangement length of seismic exploration, and determining a layout azimuth angle and a number of the single-side receiving arrangement, wherein the controllable source comprises a transverse wave controllable source and a longitudinal wave controllable source.
[0046] It should be noted that the controllable source in the embodiments of the present application comprises a transverse wave controllable source and a longitudinal wave controllable source. There are great differences between the excitation of the transverse wave controllable source and the excitation of the longitudinal wave controllable source in seismic exploration, and the differences between SH wave and SV wave are also great. In the process of exciting longitudinal and transverse waves by the source and receiving by the receiving arrangement, the energy of the transverse wave excitation source is mainly concentrated in the shallow layer relative to the longitudinal wave excitation source. Therefore, there are certain differences between the excitation parameters of the transverse wave source and the excitation parameters of the longitudinal wave source. In addition, since the transverse wave source exploration has a relatively shallow exploration depth in the longitudinal direction, the effective receiving arrangement of the receiving arrangement is relatively short relative to the longitudinal wave. Therefore, it is necessary to determine appropriate transverse wave excitation parameters and receiving arrangement length. Thus, the accuracy, reliability and effectiveness of the experiment can be ensured.
[0047] The single-side arrangement receiving length is determined according to the actual depth of seismic exploration. The seismic exploration direction can be in any horizontal ground direction. The layout azimuth angle and the number of the single-side receiving arrangement are set as follows:
[0048] The layout azimuth angle is not less than 5° and not more than 45°. The number of the single-side receiving arrangement is calculated as shown in formula 1:
[0049] N = 360° / θ (Formula 1)
[0050] It should be noted that N in formula 1 represents the number of the single-side receiving arrangement, and θ represents the included angle between two single-side receiving arrangements.
[0051] S102, the three-component geophone is arranged on the radial receiving array with the controllable source excitation point as the center, the length of the single-side receiving array as the radius, the seismic exploration observation direction as the starting point, the arrangement azimuth and the number of the stringed three-component geophones, and the entire circle is covered to obtain the radial three-component geophone receiving array.
[0052] In field operation, the excitation of the shear wave generates the shear wave, the converted longitudinal and shear wave, and the like, which have great differences in different observation directions, so it is necessary to arrange the receiving array in multiple directions, and the included angle between the arranged receiving arrays is required to be not less than 5° and not greater than 45°, so as to ensure that there is a receiving array in the vertical direction of the controllable source excitation direction, and the anisotropy characteristics can be accurately judged when the data are compared.
[0053] S103, the shear wave controllable source excites the shear wave according to the excitation parameters and the arrangement direction of the radial three-component geophone receiving array, records the azimuth of the shear wave controllable source excitation, the longitudinal wave controllable source excites the longitudinal wave in any one direction, and the radial three-component geophone receiving array is activated to receive to form the single-shot record.
[0054] The radial three-component geophone receiving array activates to receive the longitudinal and shear waves excited by the controllable source, so as to ensure the accuracy and reliability of the experiment.
[0055] When the shear wave is excited, various types of waves are generated in the wave propagation process, and the types of the converted waves generated by the shear waves excited in different directions also have certain differences, so it is necessary to activate the receiving array of the three-component geophone to receive the shear wave excited in different directions, and to perform a detailed experiment to investigate the anisotropy characteristics of the amplitude spectrum of the seismic wave excited and received in different directions, so as to ensure the reliability of the experimental results.
[0056] S104, the seismic data processing software processes the obtained single-shot record to obtain first data, extracts the first data of the single-shot record in different directions to perform vector rotation, compares and analyzes the amplitude and energy response characteristics of the first data in different directions, and determines the change trend of the amplitude and energy response.
[0057] The single-shot record processing is the processing of the seismic data processing software, and the seismic data processing software includes promax, cgg, KL seis II, GeoEast seismic data processing software, and the like.
[0058] The seismic data processing software extracts X, Y and Z components respectively to form single-shot records of different components from the single-shot records obtained by different azimuth single-sided receiving arrangements, processes the received single-shot records of different components, analyzes the data quality of the single-shot records of different components, and compares and analyzes the data quality and signal-to-noise ratio of the seismic waves of the single-shot records of different components. The single-shot record of the best component in terms of data quality is the first data.
[0059] The seismic waves of different components are not consistent in anisotropic performance due to different propagation characteristics, and therefore, comprehensive analysis of the seismic waves of different components is required to obtain the first data. The first data of different layout azimuths of the single-sided receiving arrangement is selected, vector rotation is performed according to the excitation azimuth of the recorded shear wave vibrator to the same direction as the excitation azimuth of the shear wave vibrator, Fourier transform is performed on the longitudinal and transverse wave emission information in the time window of the main target layer, the amplitude spectrum and the frequency spectrum of the first data of different layout azimuths of the single-sided receiving arrangement are taken respectively, and the amplitude spectrum and the frequency spectrum variation characteristics of different azimuths are plotted on a plan view. The anisotropic characteristics of the stratigraphic seismic wave amplitude frequency response can be clearly understood on the plan view.
[0060] As can be seen from the flowchart of Figure 1 , the embodiment of the present application uses a shear wave source to excite seismic waves, a single-sided receiving arrangement receives reflected seismic waves from all directions, and the first data of the X, Y and Z components of seismic waves of different azimuths are compared and analyzed to determine the anisotropic characteristics of the shear wave excitation seismic waves in the area.
[0061] In an embodiment of the present application, when S102 is implemented, the minimum included angle between the two single-sided receiving arrangements is not greater than 45°, so as to track the change trend of the optimal receiving direction of the shear wave excitation in the range of 360°, and the included angle is divisible by 90°, so as to ensure that the vertical direction of the shear wave excitation direction is also a direction with strong reflected shear waves. The specific implementation is as shown in Figure 2 , the number of single-sided receiving arrangements is calculated according to the following formula 1:
[0062] N = 360° / θ (formula 1)
[0063] In formula 1, θ represents the fixed included angle between the two single-sided receiving arrangements, and N represents the number of single-sided receiving arrangements.
[0064] In an embodiment of the present application, an anisotropy investigation method comprises:
[0065] obtaining excitation parameters of a controllable vibrator excitation, determining an observation direction and a single-sided receiving arrangement length of seismic exploration, determining a layout azimuth angle and a number of the single-sided receiving arrangement, and
[0066] The three-component geophone is arranged on the radial receiving array with the controllable source excitation point as the center, the single-side receiving array length as the radius, and the seismic exploration observation direction as the starting point, and the three-component geophone is arranged in the layout azimuth and number to cover the entire circle to obtain a radial three-component geophone receiving array.
[0067] The controllable source excites the shear wave in the array direction according to the excitation parameters and the radial three-component geophone receiving array, records the azimuth of the controllable source excitation, and excites the longitudinal wave in any direction once, and the radial three-component geophone receiving array is activated to receive to form a single-shot record.
[0068] The seismic data processing software processes the obtained single-shot record to obtain first data, extracts the first data of single-shot records in different directions for vector rotation, compares and analyzes the amplitude and energy response characteristics of the first data in different directions, and determines the change trend of the amplitude and energy response.
[0069] The single-shot records obtained in the above steps are extracted for X, Y, and Z components using the seismic data processing software for comparison and analysis to determine the first data.
[0070] The first data in different directions are subjected to vector rotation in combination with the excitation direction of the controllable source and the receiving array direction, and the recorded azimuth of the shear wave source excitation, the longitudinal and transverse wave emission information in the main target layer time window is subjected to Fourier transform, the amplitude spectrum and frequency spectrum of the first data in different excitation directions are taken respectively, amplitude spectrum and frequency spectrum analysis is performed, the amplitude values in different excitation directions are obtained after data analysis, a radar chart is formed in an excel table according to the data values and the angles corresponding to different excitation directions, and an amplitude spectrum and frequency spectrum plane distribution map of single-shot in different directions is drawn to analyze the anisotropy characteristics.
[0071] In the above embodiments of the present application, the three-component geophone receives three-component seismic waves, the same component of each trace is extracted to form a single-shot record of the component in the comparison of single-shot records, and the first data is determined by comparing the data appearance and signal-to-noise ratio of different components. Figure 3 In the above embodiments of the present application, the three-component geophone receives three-component seismic waves, the same component of each trace is extracted to form a single-shot record of the component in the comparison of single-shot records, and the first data is determined by comparing the data appearance and signal-to-noise ratio of different components.
[0072] It should be noted that in the embodiments of the present application, single-shot records of three components in different directions are obtained by different direction receiving arrays, and the amplitude spectrum and frequency spectrum of single-shot records of different components in different directions are compared and analyzed to draw an anisotropy plane map of different types of seismic waves.
[0073] Figure 4 Fig. 1 is a schematic diagram of amplitude spectrum of single shot record of main target layer in different layout directions according to an embodiment of the present application, Figure 5 Fig. 2 is a schematic diagram of frequency spectrum of single shot record of main target layer in different layout directions according to an embodiment of the present application, as shown in Figure 4 Figure 5 The best receiving component record in the single shot record in different directions is processed by vector rotation to form a single shot record, and the amplitude spectrum and the frequency spectrum are calculated. The amplitude spectrum and the frequency spectrum variation characteristics in different directions are plotted on a plan view through the analysis results of the amplitude spectrum and the frequency spectrum characteristics of the single shot record of the best receiving component record in different directions.
[0074] Further, Figure 6 Fig. 3 is a schematic diagram of amplitude spectrum of seismic wave in different layout directions according to an embodiment of the present application, Figure 7 Fig. 4 is a schematic diagram of frequency spectrum anisotropy of seismic wave in different layout directions according to an embodiment of the present application, as shown in Figure 6 Figure 7 The schematic diagram can clearly understand the anisotropy characteristics of the amplitude frequency response of the seismic wave in the stratum.
[0075] In an embodiment of the present application, an anisotropy investigation device 800 is disclosed, as shown in Figure 8 comprises:
[0076] The acquisition module 801 is configured to acquire an excitation parameter of a controllable source, determine an observation direction of seismic exploration and a single-side receiving arrangement length, determine a layout direction angle and a number of the single-side receiving arrangement, and the controllable source comprises a transverse wave controllable source and a longitudinal wave controllable source.
[0077] The pre-receiving module 802 is configured to arrange the serial three-component geophones on the radial receiving arrangement with the controllable source excitation point as the center, the single-side receiving arrangement length as the radius, the observation direction of the seismic exploration as the starting point, and the layout direction angle and the number, so as to cover the whole circle to obtain the radial three-component geophone receiving arrangement.
[0078] The receiving module 803 is configured to excite the transverse wave according to the arrangement direction of the radial three-component geophone receiving arrangement according to the excitation parameter of the controllable source, record the direction angle of the transverse wave controllable source excitation, excite the longitudinal wave along any one direction once, and the radial three-component geophone receiving arrangement is activated to receive to form a single shot record.
[0079] The processing module 804 is configured to process the single-shot record obtained by the seismic data processing software, obtain first data, extract the first data of the single-shot record in different directions for vector rotation, compare and analyze amplitude and energy response characteristics of the first data in different directions, and determine variation trends of the amplitude and energy response.
[0080] In one embodiment of the present application, an electronic device is provided, comprising:
[0081] at least one processor; and
[0082] a memory in communication with the at least one processor; wherein
[0083] The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the following steps:
[0084] obtaining excitation parameters of controlled source excitation, determining an observation direction and a single-side receiving arrangement length of seismic exploration, determining a layout azimuth and a number of strips of the single-side receiving arrangement;
[0085] a three-component geophone is arranged on a radial receiving arrangement with the controlled source excitation point as the center, the single-side receiving arrangement length as the radius, the observation direction of the seismic exploration as the starting point, and the layout azimuth and the number of strips, so as to cover the entire circle and obtain a radial three-component geophone receiving arrangement;
[0086] the controlled source excites a shear wave in the arrangement direction of the radial three-component geophone receiving arrangement according to the excitation parameters, records the azimuth angle of the controlled source excitation of the shear wave, excites a longitudinal wave in any one direction once, and the radial three-component geophone receiving arrangement is activated to receive to form a single-shot record;
[0087] The processing module 804 is configured to process the single-shot record obtained by the seismic data processing software, obtain first data, extract the first data of the single-shot record in different directions for vector rotation, compare and analyze amplitude and energy response characteristics of the first data in different directions, and determine variation trends of the amplitude and energy response.
[0088] In one embodiment, a computer readable storage medium is provided, and a computer program is stored on the computer readable storage medium, and the computer program is executed by a processor to implement the following steps:
[0089] obtaining excitation parameters of controlled source excitation, determining an observation direction and a single-side receiving arrangement length of seismic exploration, determining a layout azimuth and a number of strips of the single-side receiving arrangement;
[0090] The three-component geophones are arranged on the radial receiving array with the controllable source excitation point as the center, the single-side receiving array length as the radius, the seismic exploration observation direction as the starting point, and the number and arrangement azimuth of the three-component geophones arranged in series, so as to cover the whole circle and obtain the radial three-component geophone receiving array.
[0091] The controllable source excites the shear wave according to the excitation parameters and the arrangement direction of the radial three-component geophone receiving array, records the azimuth of the controllable source excitation, excites the longitudinal wave in any direction once, and activates all the radial three-component geophone receiving arrays to form a single-shot record.
[0092] The seismic data processing software processes the obtained single-shot record to obtain first data, extracts the first data of single-shot records in different directions for vector rotation, compares and analyzes the amplitude and energy response characteristics of the first data in different directions, and determines the change trend of the amplitude and energy response.
[0093] It should be noted that the seismic data processing software and data analysis used can be basically achieved by all seismic data processing software, such as promax, cgg, etc., and the KL seis II and GeoEast seismic data processing software used in the embodiment experiment of the present application;
[0094] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. An anisotropy survey method characterized by, The method comprises: acquiring excitation parameters of a controllable source, determining an observation direction and a single-side receiving array length of seismic exploration, determining a layout azimuth and a number of the single-side receiving array, the controllable source comprising a transverse wave controllable source and a longitudinal wave controllable source; a three-component geophone is arranged on a radial receiving array with the controllable source excitation point as the center, the single-side receiving array length as the radius, the seismic exploration observation direction as the starting point, and the layout azimuth and the number, to obtain a radial three-component geophone receiving array; the transverse wave controllable source excites a transverse wave according to the excitation parameters and the layout direction of the radial three-component geophone receiving array, and records the azimuth angle of the transverse wave controllable source excitation, the longitudinal wave controllable source excites a longitudinal wave in any direction once, and the radial three-component geophone receiving array is activated to receive to form a single-shot record; seismic data processing software processes the obtained single-shot record to obtain first data, extracts the first data of single-shot records in different directions for vector rotation, compares and analyzes the amplitude and energy response characteristics of the first data in different directions to determine the change trend of the amplitude and energy response; the determination of the layout azimuth and the number of the single-side receiving array comprises: the layout azimuth is not less than 5° and not more than 45°, and the number of the single-side receiving array is calculated according to the following formula: N = 360° / θ wherein N represents the number of the single-side receiving array, and θ represents the included angle between two single-side receiving arrays; the processing of the seismic data processing software on the obtained single-shot record to obtain first data comprises: the seismic data processing software extracts X, Y and Z components of the single-shot record obtained by the single-side receiving array in different directions to form single-shot records of different components, processes the received single-shot records of different components, analyzes the data quality of the single-shot records of different components, compares and analyzes the data quality appearance and signal-to-noise ratio of the seismic wave of the single-shot records of different components to obtain the first data, wherein the first data is the component single-shot record with the best data quality appearance in the single-shot records of different components.
2. The method of claim 1, wherein, the excitation parameters comprise transverse wave excitation parameters and longitudinal wave excitation parameters, the transverse wave excitation parameters comprise a transverse wave type, a number of excitation platforms and a number of times, and the transverse wave excitation parameters are acquired according to the actual needs of transverse wave seismic exploration to solve geological tasks.
3. The method of claim 1, wherein, The single-side receiving array length is determined according to the actual requirements of seismic exploration to observe the deepest target layer.
4. The method of claim 1, wherein, The radial three-component geophone receiving array is activated to receive when the transverse wave controllable source and the longitudinal wave controllable source are excited.
5. The method of claim 1, wherein, the extraction of the first data of single-shot records in different directions for vector rotation comprises: The first data of different layout directions of the single-side receiving arrangement is vector-rotated to the same direction as the excitation direction of the transverse wave vibroseis according to the recorded excitation direction of the transverse wave vibroseis, Fourier transform is performed on the longitudinal and transverse wave emission information in the main target layer time window, the amplitude spectrum and the frequency spectrum of the first data of different layout directions of the single-side receiving arrangement are taken respectively, and the anisotropy characteristics of different types of seismic waves are plotted according to the amplitude spectrum and the frequency spectrum.
6. An anisotropy investigating apparatus characterized by comprising: The device comprises: An acquisition module is configured to acquire excitation parameters of a vibroseis, determine an observation direction of seismic exploration and a length of a single-side receiving arrangement, and determine a layout direction angle and a number of the single-side receiving arrangement, wherein the vibroseis comprises a transverse wave vibroseis and a longitudinal wave vibroseis; A pre-receiving module is configured to arrange serial three-component geophones on a radial receiving arrangement with the single-side receiving arrangement length as the radius, the vibroseis excitation point as the center, and the seismic exploration observation direction as the starting point, and cover the entire circle to obtain a radial three-component geophone receiving arrangement; A receiving module is configured to excite transverse waves by the transverse wave vibroseis according to the excitation parameters and the arrangement direction of the radial three-component geophone receiving arrangement, record the excitation direction angle of the transverse wave vibroseis, excite longitudinal waves in any direction by the longitudinal wave vibroseis, and activate all the radial three-component geophone receiving arrangement to form single-shot records; A processing module is configured to process the single-shot records by seismic data processing software, acquire first data, extract the first data of single-shot records in different directions, compare and analyze the amplitude and energy response characteristics of the first data in different directions, and determine the change trend of the amplitude and energy response; The determination of the layout direction angle and the number of the single-side receiving arrangement comprises: The layout direction angle is not less than 5° and not more than 45°, and the number of the single-side receiving arrangement is calculated according to the following formula: N = 360° / θ Wherein, N represents the number of the single-side receiving arrangement, and θ represents the included angle between two single-side receiving arrangements. The processing of the single-shot records by the seismic data processing software to acquire first data comprises: The seismic data processing software extracts X, Y and Z components of the single-shot records obtained by different direction single-side receiving arrangements to form single-shot records of different components, processes the received single-shot records of different components, compares and analyzes the data quality appearance and signal-to-noise ratio of the seismic waves of the single-shot records of different components, and acquires the first data. The first data is the component single-shot record with the best data quality appearance in the single-shot records of different components.
7. An electronic device, comprising: Comprise: At least one processor; And The memory in communication connection with the at least one processor; wherein The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the anisotropy investigation method of any one of claims 1 to 5.
8. A computer readable storage medium storing a computer program, characterized in that, The computer program, when executed by a processor, implements the anisotropy investigation method of any one of claims 1 to 5.
Citation Information
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Method and equipment for detecting uniformity of vibroseis excitation wave field
CN103592699A