Omnibearing spiral gather residual dynamic calibration pickup method and device
Through the non-rigid matching displacement field leveling and single-parameter fitting picking, the problems of low accuracy and data loss in the residual dynamic picking of all-round spiral track sets are solved, the picking quality and quantity are improved, and high-quality data is provided for subsequent tomographic inversion.
Patent Information
- Application Number
- CN202411697856.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-02-28
AI Technical Summary
In the comprehensive spiral track set residual dynamic calibration pickup in the prior art, single-parameter fitting pickup accuracy is low, while multi-parameter static correction pickup is prone to losing some data and cannot fully reflect complex underground changes.
Through the acquisition and application of non-rigid matching displacement fields, the spiral features of all-round seismic track collection are flattened, single-parameter fitting is used to pick it up, and the non-rigid matching displacement field is used to react to the pickup result to restore the spiral features.
The quality and quantity of residual dynamic calibration of all-round spiral track sets are improved, high-quality input data is provided, and good basic data is provided for subsequent all-round tomography inversion modeling and other processing.
Smart Images
Figure CN119535559A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of oil and gas exploration seismic data processing, and in particular, relates to a method and a device for picking up residual dynamic correction of omnidirectional spiral gathers. Background Art
[0002] In order to fully tap the potential of omnidirectional three-dimensional seismic data and further improve the accuracy of the velocity model in the depth domain, it is often necessary to perform omnidirectional tomographic inversion on the basis of conventional common offset domain tomographic inversion. For the residual NMO picking of omnidirectional spiral gathers, the methods commonly used in actual production are single parameter fitting picking and multi-parameter static correction picking, each with its own limitations. Single parameter fitting picking can pick the residual NMO of all data in the omnidirectional gather and fit it according to linear or parabolic curves and then apply it to the entire gather, but this method sacrifices the spiral characteristics in the fitting process, resulting in low accuracy of residual NMO picking. Although multi-parameter static correction picking can retain some spiral characteristics of omnidirectional gathers, it is easily limited by the uneven quality of data in the gather, resulting in the failure to effectively pick up some seismic traces, and the spiral characteristics picked by NMO also have some details erased, which cannot fully reflect the complex changes in the underground. Summary of the invention
[0003] In view of the shortcomings of the conventional single-parameter fitting picking and multi-parameter static correction picking methods in actual production, such as poor fidelity and easy loss of some data, the embodiment of the present application provides a method and device for picking residual dynamic correction of omnidirectional spiral gathers, which can improve the quality and quantity of residual dynamic correction picking of omnidirectional spiral gathers, and then provide high-quality input data for subsequent omnidirectional tomography inversion.
[0004] In a first aspect, an embodiment of the present application provides a method for picking up residual moving averages of an omnidirectional spiral gather, comprising:
[0005] By obtaining and applying the non-rigid matching displacement field, the spiral characteristics of the omnidirectional seismic gathers are flattened, and the single parameter fitting is adopted to pick up, and the non-rigid matching displacement field is used to respond to the picking result to restore the spiral characteristics of the omnidirectional seismic gathers.
[0006] Among them, the spiral characteristics of the omnidirectional seismic gathers are flattened by obtaining and applying the non-rigid matching displacement field, including: sorting the omnidirectional seismic gathers according to the three attributes of common center point, offset distance and azimuth to obtain omnidirectional seismic spiral gathers; obtaining the non-rigid matching displacement field of the omnidirectional seismic spiral gather reference model traces; and obtaining the non-rigid matching displacement field of the omnidirectional seismic spiral gathers through time-sharing window related applications to obtain the flattened omnidirectional seismic spiral gathers.
[0007] Among them, the spiral characteristics of the omnidirectional seismic gather are flattened by obtaining and applying the non-rigid matching displacement field. The process of obtaining the non-rigid matching displacement field includes: superimposing each omnidirectional seismic spiral gather to form a model trace, and performing space-variant correlation matching on each data in the omnidirectional seismic spiral gather and the model trace to obtain the non-rigid matching displacement field.
[0008] The single parameter fitting picking includes: performing residual NMO picking on each track of the flattened all-directional seismic spiral gathers, and performing linear or parabolic feature fitting on the picking to obtain a stable single parameter residual NMO picking.
[0009] Among them, the non-rigid matching displacement field is used to recover the spiral characteristics of the full-range seismic gather in response to the picking result, including: first reversing the polarity of the generated single-parameter residual dynamic correction picking, and then applying the non-rigid matching displacement field to obtain the residual dynamic correction picking of the full-range seismic spiral gather.
[0010] This also includes: analyzing and comparing the residual dynamic correction picking of the obtained omnidirectional seismic spiral gathers with the seismic gathers and multi-parameter static correction picking results to monitor the picking effect.
[0011] In a second aspect, the present application provides an omnidirectional tomographic inversion method, using the residual NMO picking of an omnidirectional seismic spiral gather obtained by any of the above-mentioned methods for residual NMO picking of an omnidirectional spiral gather as input data.
[0012] On the third aspect, an embodiment of the present application provides a device for picking up residual dynamic correction of an omnidirectional spiral gather, including: a flattening unit, used to flatten the spiral characteristics of the omnidirectional seismic gather by obtaining and applying a non-rigid matching displacement field; a recovery unit, used to adopt a single parameter fitting picking, and use up the non-rigid matching displacement field in response to the picking result to restore the spiral characteristics of the omnidirectional seismic gather.
[0013] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of any of the above methods when executed by a processor.
[0014] In a fifth aspect, an embodiment of the present application provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the above methods when executing the program.
[0015] The method and device for picking up residual dynamic correction of omnidirectional spiral gathers in the embodiment of the present application have the following beneficial effects:
[0016] This application combines the stability of single-parameter fitting picking, while also avoiding the disadvantage of multi-parameter picking that is prone to losing some data. It can improve the quality and quantity of residual dynamic correction picking of omnidirectional spiral gathers, thereby providing better basic data for subsequent omnidirectional tomography inversion modeling and other processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a flow chart of a method for picking up residual dynamic correction of omnidirectional spiral gathers according to an embodiment of the present application;
[0018] Figure 2 It is a schematic diagram of omni-directional three-dimensional spiral gather;
[0019] Figure 3 Schematic diagram of non-rigid matching displacement field obtained for omnidirectional 3D spiral gathers;
[0020] Figure 4 Schematic diagram of the flattened omnidirectional 3D spiral gather obtained by applying the non-rigid matching displacement field to the omnidirectional 3D spiral gather;
[0021] Figure 5 Schematic diagram of the residual NMO picking for stable single parameter fitting on the flattened omnidirectional 3D spiral gather;
[0022] Figure 6 Schematic diagram of the residual NMO picking of the omni-directional 3D spiral gather obtained by reversely applying the non-rigid matching displacement field to the single parameter residual NMO picking;
[0023] Figure 7 A schematic diagram of directly using conventional multi-parameter fitting picking for omni-directional 3D spiral gathers;
[0024] Figure 8 Schematic diagram of the device for picking up residual dynamic correction of omnidirectional spiral gathers in an embodiment of the present application. DETAILED DESCRIPTION
[0025] The present application is further described below in conjunction with the accompanying drawings and embodiments.
[0026] In the following introduction, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The following introduction provides multiple embodiments of the present invention, and different embodiments can be replaced or combined, so this application can also be considered to include all possible combinations of the same and / or different embodiments recorded. Therefore, if one embodiment includes features A, B, and C, and another embodiment includes features B and D, then this application should also be considered to include embodiments containing one or more of all other possible combinations of features A, B, C, and D, even though the embodiment may not be clearly recorded in the following text.
[0027] Embodiment 1
[0028] like Figure 1 As shown, the method for picking up residual dynamic correction of omnidirectional spiral gathers in the present application includes: S101, flattening the spiral characteristics of the omnidirectional seismic gathers by obtaining and applying the non-rigid matching displacement field; S103, adopting single parameter fitting picking, using the non-rigid matching displacement field to respond to the picking results to restore the spiral characteristics of the omnidirectional seismic gathers.
[0029] The present application obtains and applies a non-rigid matching displacement field to flatten the spiral characteristics of an omnidirectional seismic gather to improve the consistency between data, and then adopts a single parameter fitting picking with higher stability, and then uses the non-rigid matching displacement field to respond to the picking to restore the spiral characteristics of the omnidirectional seismic gather. The present application can significantly improve the quality and stability of residual dynamic correction picking of omnidirectional spiral gathers, and avoids the shortcomings of the two methods of single parameter fitting picking and multi-parameter static correction picking, such as poor fidelity of spiral characteristics and loss of some data.
[0030] Embodiment 2
[0031] The method for picking up residual dynamic correction of omnidirectional spiral gathers in this application comprises the following steps:
[0032] (1) Figure 2 This is a schematic diagram of an omnidirectional three-dimensional spiral gather. The reflection event on the gather shows periodic changes with the offset and azimuth, which means that the velocity accuracy is not high or there are anisotropic characteristics. This is a typical omnidirectional seismic spiral gather, such as Figure 2 As shown in FIG. 1 , the omnidirectional seismic gathers are sorted according to the order of the three attributes of common center point, offset distance and azimuth angle to obtain omnidirectional seismic spiral gathers.
[0033] (2) Figure 3 Schematic diagram of non-rigid matching displacement field obtained for omnidirectional 3D spiral gathers, as shown in Figure 3 As shown in the figure, the non-rigid matching displacement field is obtained by referring to the model trace of the omnidirectional seismic spiral gather. First, each omnidirectional seismic spiral gather is superimposed to form a model trace, and then each trace data in the omnidirectional seismic spiral gather is matched with the model trace by space-variant correlation to obtain the non-rigid matching displacement field.
[0034] (3) Figure 4 The schematic diagram of the flattened omnidirectional 3D spiral gather is obtained by applying the non-rigid matching displacement field to the omnidirectional 3D spiral gather, as shown in Figure 4 As shown, the non-rigid matching displacement field obtained by applying step (2) to the omnidirectional seismic spiral gather through time-sharing window correlation is used to obtain a flattened omnidirectional seismic spiral gather.
[0035] (4) Figure 5The schematic diagram of the residual NMO picking for stable single parameter fitting on the flattened omnidirectional 3D spiral gather is shown in the figure. Figure 5 As shown, the flattened omnidirectional seismic spiral gathers obtained in step (3) are subjected to residual NMO picking one by one, and linear or parabolic feature fitting is performed on the picking to obtain a stable single-parameter residual NMO picking.
[0036] (5) Figure 6 The schematic diagram of the residual NMO picking of the omnidirectional 3D spiral gather is obtained by reversely applying the non-rigid matching displacement field to the single parameter residual NMO picking, as shown in Figure 6 As shown, the polarity of the residual NMO pick generated in step (4) is first reversed, and then the non-rigid matching displacement field obtained in step (2) is eliminated through space-variant correlation to obtain the residual NMO pick of the omnidirectional seismic spiral gather.
[0037] (6) Analyze and compare the residual dynamic correction picking of the omnidirectional seismic spiral gather obtained in step (5) with the seismic gather and multi-parameter static correction picking results to monitor the picking effect of the method of the present application, Figure 7 This is a schematic diagram of directly using conventional multi-parameter fitting to pick the omnidirectional 3D spiral gather in step (1), as shown in Figure 7 As shown, it can be seen that the patented technology can significantly improve the picking quality and quantity of omnidirectional spiral gathers, and can provide high-quality basic data for various subsequent processing based on omnidirectional residual dynamic correction picking.
[0038] The present application flattens the spiral characteristics of the omnidirectional seismic gather by obtaining and applying the non-rigid matching displacement field; picks and fits the flattened omnidirectional seismic spiral gather to obtain the single-parameter residual dynamic correction picking; uses the non-rigid matching displacement field for the single-parameter residual dynamic correction picking reaction to obtain the residual dynamic correction picking of the omnidirectional seismic spiral gather.
[0039] This solution uses the application and reaction of non-rigid matching displacement field to cleverly flatten and restore the spiral characteristics of omnidirectional seismic gathers, and then can exert the stability of single parameters, avoiding the disadvantage of easy loss of some data when directly picking multiple parameters. Compared with conventional methods, this application can perform residual dynamic correction picking on all omnidirectional spiral gathers without losing some data, and the picking process is more stable, which can improve the quality and quantity of residual dynamic correction picking of omnidirectional spiral gathers, which is more conducive to subsequent omnidirectional tomography inversion modeling and other processing.
[0040] In some embodiments, the spiral characteristics of the omnidirectional seismic spiral gathers can be obtained, applied and reacted based on time difference, amplitude, phase and frequency methods, so that higher quality residual dynamic correction picking for the omnidirectional seismic spiral gathers can be easily obtained, thereby improving the accuracy of the depth domain velocity model.
[0041] The present application also provides an omnidirectional tomographic inversion method, using the residual NMO picking of an omnidirectional seismic spiral gather obtained by using any of the above-mentioned methods for residual NMO picking of an omnidirectional spiral gather as input data.
[0042] like Figure 8 As shown, the device for picking up residual dynamic correction of omnidirectional spiral gathers in the present application includes: a flattening unit 10, which is used to flatten the spiral characteristics of the omnidirectional seismic gathers by obtaining and applying a non-rigid matching displacement field; a recovery unit 20, which is used to adopt a single parameter fitting picking, and use up the non-rigid matching displacement field in response to the picking result to restore the spiral characteristics of the omnidirectional seismic gathers.
[0043] In the present application, an embodiment of the device for picking up residual dynamic correction of an omnidirectional spiral track gather is basically similar to an embodiment of the method for picking up residual dynamic correction of an omnidirectional spiral track gather. For relevant matters, please refer to the introduction of the embodiment of the method for picking up residual dynamic correction of an omnidirectional spiral track gather.
[0044] The embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the method steps of the above-mentioned omnidirectional spiral track gather residual dynamic correction picking are implemented. The computer-readable storage medium may include, but is not limited to, any type of disk, including a floppy disk, an optical disk, a DVD, a CD-ROM, a micro drive, and a magneto-optical disk, a ROM, a RAM, an EPROM, an EEPROM, a DRAM, a VRAM, a flash memory device, a magnetic card or an optical card, a nano system (including a molecular memory IC), or any type of medium or device suitable for storing instructions and / or data.
[0045] The present application also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, any of the above-mentioned method steps for picking up residual dynamic correction of an omnidirectional spiral track gather is implemented.
[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A method for picking up residual moving averages of omnidirectional spiral gathers, characterized in that: include: By obtaining and applying the non-rigid matching displacement field, the spiral characteristics of the omnidirectional seismic gathers are flattened, and the single parameter fitting is adopted to pick up, and the non-rigid matching displacement field is used to respond to the picking result to restore the spiral characteristics of the omnidirectional seismic gathers.
2. The method for picking up residual dynamic correction of omnidirectional spiral gathers according to claim 1, characterized in that: The spiral characteristics of the omnidirectional seismic gathers are flattened by obtaining and applying the non-rigid matching displacement field, including: sorting the omnidirectional seismic gathers according to the three attributes of common center point, offset distance and azimuth to obtain omnidirectional seismic spiral gathers; obtaining the non-rigid matching displacement field of the reference model trace of the omnidirectional seismic spiral gathers; obtaining the non-rigid matching displacement field of the omnidirectional seismic spiral gathers through the time-sharing window related application to obtain the flattened omnidirectional seismic spiral gathers.
3. The method for picking up residual dynamic correction of omnidirectional spiral gathers according to claim 2, characterized in that: By obtaining and applying the non-rigid matching displacement field, the spiral characteristics of the omnidirectional seismic gather are flattened. The process of obtaining the non-rigid matching displacement field includes: superimposing each omnidirectional seismic spiral gather to form a model trace, and performing space-variant correlation matching on each data in the omnidirectional seismic spiral gather and the model trace to obtain the non-rigid matching displacement field.
4. The method for picking up residual dynamic correction of omnidirectional spiral gathers according to any one of claims 1 to 3, characterized in that: The single parameter fitting picking includes: performing residual NMO picking on each track of the flattened omnidirectional seismic spiral gathers, and performing linear or parabolic feature fitting on the picking to obtain a stable single parameter residual NMO picking.
5. The method for picking up residual dynamic correction of omnidirectional spiral gathers according to any one of claims 1 to 3, characterized in that: The picking result response uses the non-rigid matching displacement field to restore the spiral characteristics of the omnidirectional seismic gather, including: first reversing the polarity of the generated single-parameter residual NMO picking, and then applying the non-rigid matching displacement field to obtain the residual NMO picking of the omnidirectional seismic spiral gather.
6. The method for picking up residual dynamic correction of omnidirectional spiral gathers according to any one of claims 1 to 3, characterized in that: It also includes: analyzing and comparing the residual dynamic correction picking of the obtained omnidirectional seismic spiral gather with the seismic gather and multi-parameter static correction picking results to monitor the picking effect.
7. A full-scale tomographic inversion method, characterized in that: The residual dynamic correction picking of the omnidirectional seismic spiral gather obtained by using the method for residual dynamic correction picking of the omnidirectional spiral gather described in any one of claims 1-6 is used as input data.
8. A device for picking up residual dynamic correction of omnidirectional spiral gathers, characterized in that: include: The flattening unit is used to flatten the spiral characteristics of the omnidirectional seismic gathers by obtaining and applying the non-rigid matching displacement field; the recovery unit is used to adopt single parameter fitting picking, and use the non-rigid matching displacement field to respond to the picking results to restore the spiral characteristics of the omnidirectional seismic gathers.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method described in any one of claims 1 to 6 are implemented.
10. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method described in any one of claims 1 to 6 are implemented.