CN117233843B - Multimode stratum contact relation Wheeler transformation method, device and storage medium - Google Patents
Multimode stratum contact relation Wheeler transformation method, device and storage medium Download PDFInfo
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- CN117233843B CN117233843B CN202311499600.2A CN202311499600A CN117233843B CN 117233843 B CN117233843 B CN 117233843B CN 202311499600 A CN202311499600 A CN 202311499600A CN 117233843 B CN117233843 B CN 117233843B
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- 238000011426 transformation method Methods 0.000 title claims abstract description 18
- 230000009466 transformation Effects 0.000 claims abstract description 45
- 238000004458 analytical method Methods 0.000 claims abstract description 26
- 239000013049 sediment Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000004062 sedimentation Methods 0.000 claims abstract description 8
- 230000008021 deposition Effects 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 25
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000005755 formation reaction Methods 0.000 description 18
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention discloses a multimode stratum contact relation Wheeler transformation method, a device and a storage medium, and belongs to the technical field of earthquake deposition analysis. The method comprises the following steps: s1: at the initialization stage, reading at least two seismic horizons and establishing an initial model; s2: a stratum contact relation identification stage, wherein characteristics of seismic data are analyzed, and the type of stratum contact relation is automatically identified; s3: a Wheeler transformation stage, wherein the Wheeler transformation is carried out on the seismic data to generate a multi-mode Wheeler data body; s4: and in the seismic sediment analysis stage, seismic sediment analysis is carried out based on the multi-mode Wheeler data volume, so that geological structure and sediment reservoir distribution information are obtained. The method can process various stratum contact relations, including parallel, top flat, bottom flat, convergence, slope, upper super, lower super, cutting and the like, and is more suitable for earthquake sedimentation analysis under complex geological conditions.
Description
Technical Field
The invention relates to the technical field of seismic sediment analysis, in particular to a multimode stratum contact relation Wheeler transformation method, a multimode stratum contact relation Wheeler transformation device and a storage medium.
Background
Seismic depositional analysis is one method of interpreting the distribution, nature, and depositional environment of a sedimentary layer by seismic reflection profiles. In seismic depositional analysis, through fine processing and analysis of seismic data volumes, more in-depth knowledge about the deposited layers can be obtained. The Wheeler transform is a commonly used method of processing a volume of seismic data that can efficiently extract impulse response and autocorrelation information in the volume of seismic data.
The Wheeler transform of the prior art provides only one transform pattern in parallel, although this is sufficient for analysis of certain depositional environments, such a single transform pattern may not provide sufficient information for complex formation contact relationships.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multimode Wheeler transformation method, a multimode Wheeler transformation device and a storage medium.
The aim of the invention is realized by the following technical scheme: the first aspect of the present invention provides: a multi-mode formation contact relationship Wheeler transformation method comprising the steps of: s1: at the initialization stage, reading at least two seismic horizons and establishing an initial model; s2: a stratum contact relation identification stage, wherein characteristics of seismic data are analyzed, and the type of stratum contact relation is automatically identified; s3: a Wheeler transformation stage, wherein the Wheeler transformation is carried out on the seismic data to generate a multi-mode Wheeler data body; s4: and in the seismic sediment analysis stage, seismic sediment analysis is carried out based on the multi-mode Wheeler data volume, so that geological structure and sediment reservoir distribution information are obtained.
Preferably, said S1: the initialization stage further comprises the following sub-steps: s11: before reading the seismic horizon, denoising and filtering the original seismic data; s12: after an initial model is established, setting a time window solving mode of Wheeler transformation; s13: and setting a sampling point interval value according to the time window size of the time window calculation mode, wherein the unit is ms.
Preferably, the time window calculation mode includes: maximum mode, minimum mode and median mode.
Preferably, said S2: a formation contact relationship identification stage, wherein the types of formation contact relationships comprise: parallel, top flat, bottom flat, converging, ramp, upward supertype, downward supertype, truncated type.
Preferably, said S3: the Wheeler transformation stage further includes the following sub-steps: s31: setting stratum contact modes between two adjacent seismic horizons according to seismic reflection characteristics, and selecting corresponding conversion modes to carry out Wheeler conversion according to stratum contact relation types; s32: according to the selected transformation mode, wheeler transformation is carried out on the seismic data, and a multi-mode Wheeler data body is generated;
preferably, said S4: the seismic sediment analysis stage further comprises the sub-steps of: s41: solving the earthquake horizon between adjacent layers; s42: performing stratum interpretation, deposition environment discrimination and deposition physical parameter calculation, and performing 90-degree phase transformation treatment on the seismic data; s43: and (3) carrying out Wheeler transformation processing on the seismic data, and storing the generated Wheeler transformation data body into a data file.
Preferably, the formation contact relationship is converted into a frequency domain representation.
A second aspect of the invention provides: a multi-mode formation contact relationship Wheeler transformation apparatus for implementing any one of the multi-mode formation contact relationship Wheeler transformation methods described above, comprising: the initialization module can read the seismic horizon and establish an initial model; the stratum contact relation recognition module can analyze the characteristics of the seismic data and automatically recognize the type of the stratum contact relation; the Wheeler transformation module can carry out Wheeler transformation on the seismic data to generate a multi-mode Wheeler data body; the earthquake sedimentation analysis module can be used for carrying out earthquake sedimentation analysis based on the multimode Wheeler data volume to obtain geological structure and sediment reservoir distribution information.
A third aspect of the invention provides: a computer readable storage medium having stored therein computer executable instructions which when loaded and executed by a processor implement any of the above-described multi-mode formation contact relationship Wheeler transformation methods.
The beneficial effects of the invention are as follows:
1) The method can process various stratum contact relations, including parallel, top flat, bottom flat, convergence, slope, upper super, lower super, cutting and the like, and is more suitable for earthquake sedimentation analysis under complex geological conditions.
2) By using the multi-mode Wheeler transformation technique, the characteristics of the subsurface formations can be more finely analyzed, improving the accuracy and reliability of geological exploration.
3) According to the method, the stratum contact relation type is automatically identified, the corresponding transformation mode is selected, automatic processing of the seismic data is achieved, the requirement of manual operation is reduced, and the working efficiency is improved.
Drawings
FIG. 1 is a flow chart of a multi-mode formation contact relationship Wheeler transformation method;
FIG. 2 is a schematic diagram of a multi-mode formation contact relationship.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
The invention develops a multimode Wheeler transformation technology by means of a VS2017+QT development platform and by applying a computer language. Various formation contact relationships are contemplated, including parallel, top flat, bottom flat, converging, sloped, up-and-down, truncated, and other transformation modes. The Wheeler data transformed by the technology can carry out seismic sediment analysis more finely, and improves the accuracy and reliability of geological exploration.
As shown in fig. 2, the parallel formula: the top layer and the bottom layer are parallel, and the internal reflection layer is parallel to the top layer and the bottom layer; top flat type: the top and bottom layers are not parallel, and the internal reflection layer is parallel to the top layer; bottom flat type: the top layer and the bottom layer are not parallel, and the internal reflection layer is parallel to the bottom layer; converging type: the top layer and the bottom layer are not parallel, and the internal reflection layer converges to one side; upward super type: the top layer and the bottom layer are not parallel, and the internal reflection layer and the bottom layer are in an upward super mode; the following superstration: the top layer and the bottom layer are not parallel, and the internal reflection layer and the bottom layer are in a lower super mode; cutting-off type: the top layer and the bottom layer are not parallel, and the internal reflection layer and the top layer are in a cutting mode; ramp type: the top and bottom layers are not parallel, and the internal reflection layer is thinned towards the upward slope direction.
Referring to fig. 1-2, a first aspect of the present invention provides: a multi-mode formation contact relationship Wheeler transformation method comprising the steps of: s1: at the initialization stage, reading at least two seismic horizons and establishing an initial model; s2: a stratum contact relation identification stage, wherein characteristics of seismic data are analyzed, and the type of stratum contact relation is automatically identified; s3: a Wheeler transformation stage, wherein the Wheeler transformation is carried out on the seismic data to generate a multi-mode Wheeler data body; s4: and in the seismic sediment analysis stage, seismic sediment analysis is carried out based on the multi-mode Wheeler data volume, so that geological structure and sediment reservoir distribution information are obtained.
In some embodiments, the step S1: the initialization stage further comprises the following sub-steps: s11: before reading the seismic horizon, denoising and filtering the original seismic data; s12: after an initial model is established, setting a time window solving mode of Wheeler transformation; s13: and setting a sampling point interval value according to the time window size of the time window calculation mode, wherein the unit is ms.
In some embodiments, the time window calculation mode includes: maximum mode, minimum mode and median mode.
In some embodiments, the step S2: a formation contact relationship identification stage, wherein the types of formation contact relationships comprise: parallel, top flat, bottom flat, converging, ramp, upward supertype, downward supertype, truncated type.
In some embodiments, the step S3: the Wheeler transformation stage further includes the following sub-steps: s31: setting stratum contact modes between two adjacent seismic horizons according to seismic reflection characteristics, and selecting corresponding conversion modes to carry out Wheeler conversion according to stratum contact relation types; s32: according to the selected transformation mode, wheeler transformation is carried out on the seismic data, and a multi-mode Wheeler data body is generated;
in some embodiments, the step S4: the seismic sediment analysis stage further comprises the sub-steps of: s41: solving the earthquake horizon between adjacent layers; s42: performing stratum interpretation, deposition environment discrimination and deposition physical parameter calculation, and performing 90-degree phase transformation treatment on the seismic data; s43: and (3) carrying out Wheeler transformation processing on the seismic data, and storing the generated Wheeler transformation data body into a data file.
In some embodiments, the formation contact relationship is converted to a frequency domain representation.
A second aspect of the invention provides: a multi-mode formation contact relationship Wheeler transformation apparatus for implementing any one of the multi-mode formation contact relationship Wheeler transformation methods described above, comprising: the initialization module can read the seismic horizon and establish an initial model; the stratum contact relation recognition module can analyze the characteristics of the seismic data and automatically recognize the type of the stratum contact relation; the Wheeler transformation module can carry out Wheeler transformation on the seismic data to generate a multi-mode Wheeler data body; the earthquake sedimentation analysis module can be used for carrying out earthquake sedimentation analysis based on the multimode Wheeler data volume to obtain geological structure and sediment reservoir distribution information.
A third aspect of the invention provides: a computer readable storage medium having stored therein computer executable instructions which when loaded and executed by a processor implement any of the above-described multi-mode formation contact relationship Wheeler transformation methods.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (7)
1. A multimode stratum contact relation Wheeler transformation method is characterized in that: the method comprises the following steps:
s1: at the initialization stage, reading at least two seismic horizons and establishing an initial model;
s2: a stratum contact relation identification stage, wherein characteristics of seismic data are analyzed, and the type of stratum contact relation is automatically identified;
the types of formation contact relationships include: parallel, top flat, bottom flat, converging, slope, upward supertype, downward supertype, truncated; the parallel type is that the top layer and the bottom layer are parallel, and the internal reflection layer is parallel to the top layer and the bottom layer; the top flat type is that the top layer and the bottom layer are not parallel, and the internal reflection layer is parallel to the top layer; the bottom plane is formed by non-parallel top and bottom layers, and the internal reflection layer is parallel to the bottom layer; the convergence type is that the top layer and the bottom layer are not parallel, and the internal reflection layer converges to one side; the upper super type is that the top layer and the bottom layer are not parallel, and the internal reflection layer and the bottom layer are in an upper super mode; the lower super type is that the top layer and the bottom layer are not parallel, and the internal reflection layer and the bottom layer are in a lower super mode; the cutting mode is that the top layer and the bottom layer are not parallel, and the internal reflection layer and the top layer are in the cutting mode; the slope type is that the top layer and the bottom layer are not parallel, and the internal reflection layer is thinned towards the upward slope direction;
s3: a Wheeler transformation stage, wherein the Wheeler transformation is carried out on the seismic data to generate a multi-mode Wheeler data body;
s4: in the seismic sediment analysis stage, seismic sediment analysis is carried out based on a multi-mode Wheeler data body to obtain geological structure and sediment reservoir distribution information;
s3: the Wheeler transformation stage further includes the following sub-steps:
s31: setting stratum contact modes between two adjacent seismic horizons according to seismic reflection characteristics, and selecting corresponding conversion modes to carry out Wheeler conversion according to stratum contact relation types;
s32: and carrying out Wheeler transformation on the seismic data according to the selected transformation mode to generate a multi-mode Wheeler data body.
2. The multi-mode formation contact relationship Wheeler transformation method of claim 1 wherein: the S1: the initialization stage further comprises the following sub-steps:
s11: before reading the seismic horizon, denoising and filtering the original seismic data;
s12: after an initial model is established, setting a time window solving mode of Wheeler transformation;
s13: and setting a sampling point interval value according to the time window size of the time window calculation mode, wherein the unit is ms.
3. The multi-mode formation contact relationship Wheeler transformation method of claim 2 wherein: the time window solving mode comprises the following steps: maximum mode, minimum mode and median mode.
4. The multi-mode formation contact relationship Wheeler transformation method of claim 1 wherein: the S4: the seismic sediment analysis stage further comprises the sub-steps of:
s41: solving the earthquake horizon between adjacent layers;
s42: performing stratum interpretation, deposition environment discrimination and deposition physical parameter calculation, and performing 90-degree phase transformation treatment on the seismic data;
s43: and (3) carrying out Wheeler transformation processing on the seismic data, and storing the generated Wheeler transformation data body into a data file.
5. The multi-mode formation contact relationship Wheeler transformation method of any one of claims 1-4 wherein: the formation contact relationship is converted to a frequency domain representation.
6. A multi-mode stratum contact relationship Wheeler transformation device, characterized by: a method for implementing a multi-mode formation contact relationship Wheeler transformation as claimed in any one of claims 1 to 4, comprising:
the initialization module can read the seismic horizon and establish an initial model;
the stratum contact relation recognition module can analyze the characteristics of the seismic data and automatically recognize the type of the stratum contact relation;
the Wheeler transformation module can carry out Wheeler transformation on the seismic data to generate a multi-mode Wheeler data body;
the earthquake sedimentation analysis module can be used for carrying out earthquake sedimentation analysis based on the multimode Wheeler data volume to obtain geological structure and sediment reservoir distribution information.
7. A computer-readable storage medium, characterized by: the computer readable storage medium stores computer executable instructions that, when loaded and executed by a processor, implement the multi-mode stratum contact relationship Wheeler transformation method of any one of claims 1-4.
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