Anisotropy correction method and device for azimuth amplitude curvature calculation

Abstract

The invention belongs to the technical field of seismic exploration, and particularly discloses an anisotropy correction method and device for azimuth amplitude curvature calculation, and the method comprises the steps: carrying out the superposition of a pre-stack seismic channel set according to a plurality of different azimuth angles, and obtaining a plurality of azimuth superposition bodies; performing fracture inversion based on the pre-stack seismic gather to obtain fracture strength and a fracture development azimuth angle; obtaining the amplitude curvature of each azimuth superposition body based on the fracture strength and the fracture development azimuth angle; and carrying out anisotropy correction on the amplitude curvature. According to the anisotropy correction method for azimuth amplitude curvature calculation, azimuth information in the pre-stack seismic data is fully excavated, the amplitude curvature of each azimuth stack is obtained based on the fracture strength and the fracture development azimuth angle, anisotropy correction is carried out on the amplitude curvature, the amplitude curvature calculation precision is ensured, and the calculation accuracy is improved. And effective characterization of complex geological anomalous bodies such as fractures-cracks and river channels is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of seismic exploration, and in particular relates to an anisotropy correction method and device for azimuth amplitude curvature calculation. Background Art

[0002] Seismic data contains a large amount of relevant stratigraphic information. How to accurately extract various information from seismic data and obtain relevant reservoir information through seismic attribute analysis is one of the current research focuses of geologists. Usually, curvature is widely used in medicine, military, construction and other industries. With the rapid development of computer technology and seismic exploration technology, curvature attributes have been recognized as a very promising technology for predicting fractures.

[0003] Curvature attributes can now be divided into horizon curvature and amplitude curvature. Amplitude curvature is a relatively new attribute analysis technology. Its calculation is a volume attribute calculation and is not controlled by human factors. Therefore, amplitude curvature can provide important information beyond conventional seismic attributes and is often used to identify faults and fractures.

[0004] Normally, when developing amplitude attributes on post-stack seismic data, it is appropriate to calculate the amplitude curvature attribute normally because the amplitude is single. However, for azimuth stacks, due to the presence of cracks, the amplitude is anisotropic in different azimuths, and the difference between the amplitudes in different azimuths caused by the anisotropy of cracks is large, which in turn affects the calculation results of the azimuth amplitude curvature.

[0005] Based on this technical background, the present invention studies an anisotropy correction method and device for azimuthal amplitude curvature calculation.

[0006] Therefore, it is necessary to consider the amplitude curvature calculation technology including anisotropy correction. This is also aimed at the efficient use of "two widths and one height" seismic data, fully mining the azimuth information in pre-stack seismic data, and then realizing the accurate characterization of complex geological anomalies such as faults-cracks and river channels. Summary of the invention

[0007] In view of the shortcomings of the prior art, the present invention provides an anisotropic correction method and device for azimuthal amplitude curvature calculation. The method fully exploits the azimuthal information in pre-stack seismic data, obtains the amplitude curvature of each azimuthal stack based on the fracture intensity and the fracture development azimuth, and performs anisotropic correction on the amplitude curvature, thereby ensuring the accuracy of amplitude curvature calculation and achieving effective characterization of complex geological anomalies such as faults-cracks and river channels.

[0008] In order to achieve the above object, a first aspect of the present invention provides an anisotropy correction method for azimuthal amplitude curvature calculation, comprising:

[0009] The pre-stack seismic gathers are stacked at different azimuth angles to obtain multiple azimuth stack bodies;

[0010] Fracture inversion is performed based on pre-stack seismic gathers to obtain fracture intensity and fracture development azimuth;

[0011] Based on the crack strength and crack development azimuth, the amplitude curvature of each azimuth stacking body is obtained;

[0012] The amplitude curvature is anisotropically corrected.

[0013] A second aspect of the present invention provides an anisotropy correction device for azimuth amplitude curvature calculation, comprising:

[0014] A stacking module is used to stack pre-stack seismic gathers according to different azimuth angles to obtain multiple azimuth stacks;

[0015] Inversion module, used to perform fracture inversion based on pre-stack seismic gathers to obtain fracture intensity and fracture development azimuth;

[0016] A curvature calculation module, used to obtain the amplitude curvature of each azimuth stack based on the fracture strength and fracture development azimuth;

[0017] The correction module performs anisotropic correction on the amplitude curvature except the weakest amplitude curvature.

[0018] A third aspect of the present invention provides an electronic device, the electronic device comprising:

[0019] A memory storing executable instructions;

[0020] A processor runs the executable instructions in the memory to implement the anisotropy correction method for azimuthal amplitude curvature calculation described in the first aspect.

[0021] A fourth aspect of the present invention provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the anisotropy correction method for azimuthal amplitude curvature calculation described in the first aspect.

[0022] The beneficial effects of the present invention include:

[0023] (1) The anisotropic correction method for azimuthal amplitude curvature calculation proposed in the present invention fully exploits the azimuthal information in pre-stack seismic data, obtains the amplitude curvature of each azimuthal stack based on the fracture intensity and fracture development azimuth, and performs anisotropic correction on the amplitude curvature, thereby ensuring the accuracy of amplitude curvature calculation and achieving effective characterization of complex geological anomalies such as faults-cracks and river channels.

[0024] (2) The anisotropic correction method for azimuthal amplitude curvature calculation provided by the present invention determines the weakest amplitude curvature and the strongest amplitude curvature based on the fracture development azimuth and the central azimuth of each azimuthal stack, thereby simplifying the calculation of the correction coefficients of the azimuthal stack that requires anisotropic correction and having strong practicality.

[0025] (3) The anisotropic correction method for azimuthal amplitude curvature calculation provided by the present invention performs anisotropic correction on the amplitude curvature of each azimuthal stack, thereby avoiding the problem that the anisotropy of the cracks causes large differences between the amplitudes in different azimuthal directions, thereby affecting the calculation results of the azimuthal amplitude curvature.

[0026] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings.

[0028] Figure 1 The present invention provides a flowchart of an anisotropy correction method for azimuthal amplitude curvature calculation.

[0029] Figure 2 It is a schematic diagram of slicing along layers of the first orientation stacking body in the first embodiment of the present invention.

[0030] Figure 3 It is a schematic diagram of slicing along layers of the second orientation stacking body in the first embodiment of the present invention.

[0031] Figure 4 It is a schematic diagram of slicing along the layer of the third-dimensional stacking body in the first embodiment of the present invention.

[0032] Figure 5 It is a schematic diagram of slicing along layers of the fourth orientation stacked body in the first embodiment of the present invention.

[0033] Figure 6 It is a schematic diagram of slices along the layer of the amplitude curvature of the second azimuth stack before correction in the first embodiment of the present invention.

[0034] Figure 7 It is a schematic diagram of slices along the layer of the amplitude curvature of the second azimuth stack after correction in the first embodiment of the present invention. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0036] The present invention provides an anisotropy correction method for azimuth amplitude curvature calculation, such as Figure 1 As shown, including:

[0037] The pre-stack seismic gathers are stacked at different azimuth angles to obtain multiple azimuth stack bodies;

[0038] Fracture inversion is performed based on pre-stack seismic gathers to obtain fracture intensity and fracture development azimuth;

[0039] Based on the crack intensity and crack development azimuth, the amplitude curvature of each azimuth stack is obtained;

[0040] Anisotropy correction is performed on the amplitude curvature.

[0041] The method of the present invention fully exploits the azimuth information in pre-stack seismic data, obtains the amplitude curvature of each azimuth stack based on the fracture intensity and fracture development azimuth, and performs anisotropic correction on the amplitude curvature, thereby ensuring the accuracy of amplitude curvature calculation and achieving effective characterization of complex geological anomalies such as faults-cracks and river channels.

[0042] According to the present invention, a plurality of different azimuth angles evenly divide the angle range of 0-360 degrees, or 0-180 degrees;

[0043] When the maximum value of a certain azimuth angle is not greater than 180 degrees, the average value of the azimuth angle is taken as the central azimuth angle of the corresponding azimuth stack;

[0044] When the maximum value of a certain azimuth angle is greater than 180 degrees, the value obtained by subtracting 180 degrees from the average value of the azimuth angle is taken as the central azimuth angle of the corresponding azimuth stack.

[0045] In the present invention, if the azimuth range of the seismic data is 0-360 degrees, it is necessary to perform sector folding correction calculation on the azimuth greater than 180, that is, subtract 180. For example, if the azimuth of a seismic track set is 220 degrees, when superimposing, the azimuth can be calculated as 40 degrees.

[0046] Preferably, the value of the crack strength is 0-0.3;

[0047] The fracture development azimuth is the true azimuth of the fracture.

[0048] According to the present invention, the amplitude curvature of each azimuth stack body is obtained based on the fracture intensity and the fracture development azimuth, including:

[0049] The weakest amplitude curvature and the strongest amplitude curvature are determined based on the fracture development azimuth and the central azimuth of each azimuth stacking body;

[0050] Anisotropy correction is performed on all but the weakest amplitude curvature.

[0051] In the present invention, the weakest amplitude curvature and the strongest amplitude curvature are determined based on the fracture development azimuth and the central azimuth of each azimuth stack, which simplifies the calculation of the correction coefficient of the azimuth stack requiring anisotropy correction and has strong practicality.

[0052] Preferably, the amplitude curvature of the azimuth stack whose central azimuth is parallel or closest to the fracture development azimuth is taken as the weakest amplitude curvature;

[0053] The amplitude curvature of the azimuth stack whose central azimuth is perpendicular or closest to perpendicular to the fracture development azimuth is taken as the strongest amplitude curvature.

[0054] According to the present invention, the correction coefficient of the amplitude curvature for anisotropy correction is calculated by the following formula:

[0055]

[0056] Among them, K max is the strongest amplitude curvature, ani is the crack intensity, is the central azimuth angle of the azimuth body that needs anisotropic correction; is the crack development azimuth, K ncor Correction factors for azimuthal stacks that require anisotropic correction.

[0057] According to the present invention, the sum of the original amplitude curvature of a certain azimuth stack and the correction coefficient of the amplitude curvature of the azimuth stack is used as the anisotropy-corrected amplitude curvature of the azimuth stack.

[0058] In the present invention, by performing anisotropic correction on the amplitude curvature of each azimuthal stack, the problem of large differences between amplitudes in different azimuthal directions caused by the anisotropy of the crack, which in turn affects the calculation results of the azimuthal amplitude curvature, is avoided.

[0059] The present invention will be described in more detail below by way of examples.

[0060] Embodiment 1:

[0061] This embodiment proposes a specific implementation process of an anisotropy correction method for azimuth amplitude curvature calculation, including the following steps:

[0062] 1) Four azimuth stacks are formed, and the schematic diagram of the slices along the layer of each azimuth stack is as follows: Figure 2-Figure 5 As shown:

[0063] 0 to 45 degrees is the first azimuth stack, and the central azimuth is recorded as 22.5;

[0064] 45 degrees to 90 degrees is the second azimuth stack, and the central azimuth is recorded as 67.5;

[0065] 90 degrees to 135 degrees is the third-party azimuth stack, and the central azimuth is recorded as 112.5;

[0066] 135 degrees to 180 degrees is the fourth azimuth superposition body, and the central azimuth is recorded as 157.5;

[0067] 2) Calculate the fracture intensity and fracture development orientation using pre-stack gathers:

[0068] The fracture intensity and fracture development azimuth of all seismic CDP points were calculated using all pre-stack gathers. The fracture intensity value is between 0 and 0.3, and the fracture development azimuth is the true azimuth of the fracture;

[0069] 3) Calculate the azimuth amplitude difference at different azimuth angles;

[0070] For a certain CDP point, if the fracture development orientation of the CDP point obtained by inversion is According to the anisotropy theory, the amplitude attribute parallel to the azimuth is weaker, and the amplitude attribute perpendicular to the azimuth is stronger. Assuming that the azimuth of a CDP point inversion is 60 degrees, the fracture development intensity is 0.2, and the fracture is developed in the northeast direction, therefore, for the first azimuth stack to the fourth azimuth stack, it is obvious that the amplitude curvature K4 of the fourth azimuth stack is the strongest, and the amplitude curvature K2 of the second azimuth stack is the weakest, so it is necessary to correct the weaker azimuth amplitude curvatures K1, K2, and K3; for HTI media, the Ruger formula of the reflection amplitude can be approximately expressed by the following formula:

[0071]

[0072] Aiso is the isotropic intercept, which can be shown as not considered; Biso is the isotropic gradient, where the amplitude curvature perpendicular to the crack orientation can be K4=Biso; Baio is the amplitude relative coefficient, taking the relative value of isotropy, that is, Bani=K4*ani, that is, the maximum value Bani=K4*0.2;

[0073] In the above formula It is the fracture inversion azimuth. is the central azimuth angle of the azimuth volume amplitude curvature property to be corrected, for example K2 can be regarded as a reliable amplitude curvature and does not participate in the correction;

[0074] In the above formula, since the angle of azimuth stacking is full stacking, according to the current "two widths and one height" seismic data, the incident angle range is generally between 0 and 50. Since the seismic data frequency of far-offset seismic data is low and the frequency coverage of near-offset data is often insufficient, the incident angle can be taken as 20 degrees according to empirical values.

[0075] Therefore, the above formula can be transformed into

[0076]

[0077] By bringing in the above human values ​​and experience perspective, we can get:

[0078]

[0079] Note that the angle needs to be converted into radians for calculation here;

[0080] Separately Bring in You can get Kcor1, Kcor2, Kcor3,

[0081] 4) Calculate the anisotropy-corrected amplitude curvature property:

[0082] All the above results based on amplitude curvature calculation are expressed in K, so we can get

[0083] K1 校正 =K1+K1cor;

[0084] K2 校正 =K2;

[0085] K3 校正 =K3+K3cor;

[0086] K4 校正 =K4+K4cor.

[0087] Since the existence of anisotropy can greatly affect the results of azimuthal amplitude attribute calculations, and amplitude curvature is one of the best attributes to characterize fractures, it is appropriate to perform anisotropy correction on the azimuthal amplitude curvature attribute, which can obtain better and more accurate azimuthal amplitude curvature results. Different seismic attributes are affected by amplitude, time, and phase. It is not very meaningful to perform anisotropy correction on azimuthal attributes that are not greatly affected by amplitude. However, for azimuthal attributes that are more dependent on amplitude, such as azimuthal root mean square amplitude and azimuthal average amplitude attributes, it is also possible to perform anisotropy correction on them.

[0088] Figure 6 and Figure 7 They are respectively a schematic diagram of the slice along the layer of the amplitude curvature of the second azimuth stack volume before correction and a schematic diagram of the slice along the layer of the amplitude curvature of the second azimuth stack volume after correction.

[0089] Embodiment 2:

[0090] This embodiment provides an anisotropy correction method for azimuth amplitude curvature calculation, such as Figure 1 As shown, including:

[0091] The pre-stack seismic gathers are stacked at different azimuth angles to obtain multiple azimuth stack bodies;

[0092] Fracture inversion is performed based on pre-stack seismic gathers to obtain fracture intensity and fracture development azimuth;

[0093] Based on the crack intensity and crack development azimuth, the amplitude curvature of each azimuth stack is obtained;

[0094] Anisotropic correction of amplitude curvature;

[0095] Multiple different azimuth angles evenly divide the angle range of 0-360 degrees or 0-180 degrees;

[0096] When the maximum value of a certain azimuth angle is not greater than 180 degrees, the average value of the azimuth angle is taken as the central azimuth angle of the corresponding azimuth stack;

[0097] When the maximum value of a certain azimuth angle is greater than 180 degrees, the value of the average value of the azimuth angle minus 180 degrees is taken as the central azimuth angle of the corresponding azimuth stack;

[0098] The value of crack strength is 0-0.3;

[0099] The fracture development azimuth is the true azimuth of the fracture;

[0100] Based on the crack intensity and crack development azimuth, the amplitude curvature of each azimuth stack body is obtained, including:

[0101] The weakest amplitude curvature and the strongest amplitude curvature are determined based on the fracture development azimuth and the central azimuth of each azimuth stacking body;

[0102] Anisotropy correction is performed on all but the weakest amplitude curvature;

[0103] The amplitude curvature of the azimuth stack whose central azimuth is parallel or most nearly parallel to the fracture development azimuth is taken as the weakest amplitude curvature;

[0104] The amplitude curvature of the azimuth stack whose central azimuth is perpendicular or closest to perpendicular to the fracture development azimuth is taken as the strongest amplitude curvature.

[0105] According to the present invention, the correction coefficient of the amplitude curvature for anisotropy correction is calculated by the following formula:

[0106]

[0107] Among them, K max is the strongest amplitude curvature, ani is the crack intensity, is the central azimuth angle of the azimuth body that needs anisotropic correction; is the crack development azimuth, K ncor Correction coefficients for azimuthal stacks that require anisotropic correction;

[0108] The sum of the original amplitude curvature of a certain azimuth stack and the correction coefficient of the amplitude curvature of the azimuth stack is taken as the anisotropically corrected amplitude curvature of the azimuth stack.

[0109] Embodiment three:

[0110] This embodiment provides an anisotropy correction device for azimuth amplitude curvature calculation, such as Figure 1 As shown, including:

[0111] A stacking module is used to stack pre-stack seismic gathers according to different azimuth angles to obtain multiple azimuth stacks;

[0112] Inversion module, used to perform fracture inversion based on pre-stack seismic gathers to obtain fracture intensity and fracture development azimuth;

[0113] The curvature calculation module is used to obtain the amplitude curvature of each azimuth stack based on the fracture intensity and fracture development azimuth;

[0114] A correction module performs anisotropic correction on the amplitude curvatures except the weakest one;

[0115] Multiple different azimuth angles evenly divide the angle range of 0-360 degrees or 0-180 degrees;

[0116] When the maximum value of a certain azimuth angle is not greater than 180 degrees, the average value of the azimuth angle is taken as the central azimuth angle of the corresponding azimuth stack;

[0117] When the maximum value of a certain azimuth angle is greater than 180 degrees, the value of the average value of the azimuth angle minus 180 degrees is taken as the central azimuth angle of the corresponding azimuth stack;

[0118] The value of crack strength is 0-0.3;

[0119] The fracture development azimuth is the true azimuth of the fracture;

[0120] Based on the crack intensity and crack development azimuth, the amplitude curvature of each azimuth stack body is obtained, including:

[0121] The weakest amplitude curvature and the strongest amplitude curvature are determined based on the fracture development azimuth and the central azimuth of each azimuth stacking body;

[0122] Anisotropy correction is performed on all but the weakest amplitude curvature;

[0123] The amplitude curvature of the azimuth stack whose central azimuth is parallel or most nearly parallel to the fracture development azimuth is taken as the weakest amplitude curvature;

[0124] The amplitude curvature of the azimuth stack whose central azimuth is perpendicular or closest to perpendicular to the fracture development azimuth is taken as the strongest amplitude curvature.

[0125] According to the present invention, the correction coefficient of the amplitude curvature for anisotropy correction is calculated by the following formula:

[0126]

[0127] Among them, K max is the strongest amplitude curvature, ani is the crack intensity, is the central azimuth angle of the azimuth body that needs anisotropic correction; is the crack development azimuth, K ncor Correction coefficients for azimuthal stacks that require anisotropic correction;

[0128] The sum of the original amplitude curvature of a certain azimuth stack and the correction coefficient of the amplitude curvature of the azimuth stack is taken as the anisotropically corrected amplitude curvature of the azimuth stack.

[0129] Embodiment 4:

[0130] An embodiment of the present invention provides an electronic device including a memory and a processor.

[0131] A memory storing executable instructions;

[0132] The processor runs the executable instructions in the memory to implement an anisotropy correction method for azimuthal amplitude curvature calculation.

[0133] The memory is used to store non-temporary computer-readable instructions. Specifically, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may, for example, include random access memory (RAM) and / or cache memory (cache), etc. The non-volatile memory may, for example, include read-only memory (ROM), hard disk, flash memory, etc.

[0134] The processor may be a central processing unit (CPU) or other forms of processing units with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions. In one embodiment of the present invention, the processor is used to run the computer-readable instructions stored in the memory.

[0135] Those skilled in the art should be able to understand that in order to solve the technical problem of how to obtain a good user experience, the present embodiment may also include well-known structures such as a communication bus and an interface, and these well-known structures should also be included in the protection scope of the present invention.

[0136] For detailed description of this embodiment, reference may be made to the corresponding descriptions in the aforementioned embodiments, which will not be repeated here.

[0137] Embodiment five:

[0138] An embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the anisotropy correction for azimuthal amplitude curvature calculation is implemented.

[0139] The computer-readable storage medium according to the embodiment of the present invention stores non-transitory computer-readable instructions, and when the non-transitory computer-readable instructions are executed by a processor, all or part of the steps of the above-mentioned methods of the embodiments of the present invention are executed.

[0140] The above-mentioned computer-readable storage media include, but are not limited to: optical storage media (e.g., CD-ROM and DVD), magneto-optical storage media (e.g., MO), magnetic storage media (e.g., magnetic tape or mobile hard disk), media with built-in rewritable non-volatile memory (e.g., memory card) and media with built-in ROM (e.g., ROM box).

[0141] The anisotropic correction method for azimuthal amplitude curvature calculation proposed in the embodiment of the present invention fully exploits the azimuthal information in pre-stack seismic data, obtains the amplitude curvature of each azimuthal stack based on the fracture intensity and the fracture development azimuth, and performs anisotropic correction on the amplitude curvature, thereby ensuring the accuracy of amplitude curvature calculation and realizing effective characterization of complex geological anomalies such as faults-cracks and river channels.

[0142] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An anisotropy correction method for azimuthal amplitude curvature calculation, It is characterized in that include: The pre-stack seismic gathers are stacked at different azimuth angles to obtain multiple azimuth stack bodies; Fracture inversion is performed based on pre-stack seismic gathers to obtain fracture intensity and fracture development azimuth; Based on the crack strength and crack development azimuth, the amplitude curvature of each azimuth stacking body is obtained; The amplitude curvature is anisotropically corrected.

2. The method according to claim 1, It is characterized in that The multiple different azimuth angles are evenly divided into an angle range of 0-360 degrees, or 0-180 degrees; When the maximum value of a certain azimuth angle is not greater than 180 degrees, the average value of the azimuth angle is taken as the central azimuth angle of the corresponding azimuth stack; When the maximum value of a certain azimuth angle is greater than 180 degrees, the value obtained by subtracting 180 degrees from the average value of the azimuth angle is taken as the central azimuth angle of the corresponding azimuth stack.

3. The method according to claim 2, It is characterized in that The value of the crack strength is 0-0.3; The fracture development azimuth is the true azimuth of the fracture.

4. The method according to claim 1, It is characterized in that The amplitude curvature of each azimuth stack body obtained based on the crack strength and crack development azimuth includes: The weakest amplitude curvature and the strongest amplitude curvature are determined based on the fracture development azimuth and the central azimuth of each azimuth stacking body; Anisotropy correction is performed on all but the weakest amplitude curvature.

5. The method according to claim 4, It is characterized in that The amplitude curvature of the azimuth stack whose central azimuth is parallel or most nearly parallel to the fracture development azimuth is taken as the weakest amplitude curvature; The amplitude curvature of the azimuth superposition body whose central azimuth is perpendicular or closest to perpendicular to the fracture development azimuth is taken as the strongest amplitude curvature.

6. The method according to claim 5, It is characterized in that The correction coefficient of the amplitude curvature for anisotropy correction is calculated by the following formula: Among them, K max is the strongest amplitude curvature, ani is the crack intensity, is the central azimuth angle of the azimuth body that needs anisotropic correction; is the crack development azimuth, K ncor Correction factors for azimuthal stacks that require anisotropic correction.

7. The method according to claim 6, It is characterized in that The sum of the original amplitude curvature of a certain azimuth stack and the correction coefficient of the amplitude curvature of the azimuth stack is taken as the anisotropically corrected amplitude curvature of the azimuth stack.

8. An anisotropy correction device for azimuth amplitude curvature calculation, It is characterized in that include: A stacking module is used to stack pre-stack seismic gathers according to different azimuth angles to obtain multiple azimuth stacks; Inversion module, used to perform fracture inversion based on pre-stack seismic gathers to obtain fracture intensity and fracture development azimuth; A curvature calculation module, used to obtain the amplitude curvature of each azimuth stack based on the fracture strength and fracture development azimuth; The correction module performs anisotropic correction on the amplitude curvature except the weakest amplitude curvature.

9. An electronic device, It is characterized in that The electronic device comprises: A memory storing executable instructions; A processor, wherein the processor runs the executable instructions in the memory to implement an anisotropy correction method for azimuthal amplitude curvature calculation according to any one of claims 1-7.

10. A computer-readable storage medium, It is characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the anisotropy correction method for azimuthal amplitude curvature calculation according to any one of claims 1 to 7 is implemented.

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