CN-121995533-A - Dynamic simulation method for layer sequence configuration evolution

CN121995533ACN 121995533 ACN121995533 ACN 121995533ACN-121995533-A

Abstract

The invention relates to the technical field of evolution dynamic simulation, in particular to a layer sequence configuration evolution dynamic simulation method. The method comprises the steps of collecting geological data of a research area, determining a research area structure evolution sequence and research area basic geological data based on the geological data, constructing an initial stratum geological model, performing multi-period structure deformation numerical simulation on the initial stratum geological model based on the research area structure evolution sequence to generate an interval stratum space configuration model, performing seismic forward modeling based on the interval stratum space configuration model to generate a forward seismic data body, comparing the forward seismic data body with an acquired actual seismic data body, and performing iterative correction on simulation parameters of multi-period structure deformation numerical simulation according to a comparison result.

Inventors

CHEN CHENG
HUO JUNZHOU
ZHANG HAO
FANG XINXIN
ZHANG DONGXU

Assignees

中国地质科学院地质力学研究所

Dates

Publication Date: 20260508
Application Date: 20260123

Claims (10)

1. The dynamic simulation method for the layer sequence configuration evolution is characterized by comprising the following steps of: Step S1, collecting geological data of a research area, determining a research area structure evolution sequence and research area basic geological data based on the geological data, and constructing an initial stratum geological model; s2, carrying out multi-period structural deformation numerical simulation on an initial stratum geological model based on a research area structural evolution sequence to generate an interval stratum space configuration model; s3, performing forward modeling of the earthquake based on the layer sequence stratum space configuration model to generate a forward earthquake data volume; And S4, comparing the forward seismic data volume with the acquired actual seismic data volume, carrying out iterative correction on simulation parameters of multi-period structural deformation numerical simulation according to the comparison result, and outputting the layer sequence configuration dynamic evolution process data of the full geological period of the research area when the errors of the forward seismic data volume and the actual seismic data volume meet the preset threshold.
2. The method of dynamic simulation of layer sequence configuration evolution according to claim 1, wherein step S1 comprises the steps of: S11, collecting geological data of a research area; Step S12, data arrangement and preprocessing are carried out on geological data, and geological data of geological modeling are obtained; s13, determining a structural evolution sequence of a research area and basic geological data based on the geological data; and S14, constructing an initial stratum geologic model of the research area through a three-dimensional geologic modeling technology according to the structure evolution sequence and the basic geologic data.
3. The method of dynamic simulation of layer sequence configuration evolution according to claim 2, wherein step S12 comprises the steps of: S121, performing data format unification and standardization processing on geological data, and performing quality inspection and outlier rejection; And step S122, performing interpolation operation and space reconstruction on the processed geological data, and establishing a data index to generate the geological data.
4. The method of dynamic simulation of layer sequence configuration evolution according to claim 2, wherein step S14 comprises the steps of: step S141, based on basic geological data, establishing a three-dimensional geological grid structure of a research area, and determining the initial position of each layer sequence interface according to a structure evolution sequence; And S142, giving lithology and physical mechanical parameters of each layer sequence unit in the three-dimensional geological grid structure based on the basic geological data to form an initial stratum geological model.
5. The dynamic simulation method of layer sequence configuration evolution according to claim 3, wherein step S2 comprises the steps of: s21, determining the number of multi-stage structural deformation stages and deformation parameters of each stage based on a structural evolution sequence of a research area; s22, carrying out stage-by-stage construction deformation numerical simulation on the initial stratum geological model based on the number of multi-stage construction deformation stages and deformation parameters of each stage; S23, obtaining simulation results of each stage in the stage-by-stage construction deformation numerical simulation, and recording stratum deformation data of the simulation results of each stage; And step S24, integrating the multi-stage structural deformation numerical simulation results based on the stratum deformation data of the simulation results of each stage, and generating a stratum space configuration model of the stratum sequence.
6. The method of dynamic simulation of layer sequence configuration evolution according to claim 4, wherein step S21 comprises the steps of: S211, extracting a construction event sequence in a construction evolution sequence of a research area, and determining the number of multi-stage construction deformation stages; And S212, acquiring stress field characteristics, denudation rate and sedimentation rate parameters of each construction event based on the construction event sequence to form deformation parameters of each stage in the multi-stage construction deformation stage.
7. The method of dynamic simulation of layer sequence configuration evolution according to claim 4, wherein step S22 comprises the steps of: Step S221, determining a phase-by-phase construction deformation numerical simulation flow based on the number of multi-phase construction deformation phases and deformation parameters of each phase; step S222, performing phase-by-phase construction deformation numerical simulation on the initial stratum geological model based on the phase-by-phase construction deformation numerical simulation flow.
8. The method of dynamic simulation of layer sequence configuration evolution according to claim 4, wherein step S23 comprises the steps of: Step S231, obtaining simulation results of each stage in the stage-by-stage construction deformation numerical simulation process, and extracting stratum deformation data in the simulation results of each stage; and S232, integrating the extracted stratum deformation data of the simulation results of each stage according to the sequence of the corresponding deformation stages, and recording the stratum deformation data of the simulation results of each stage.
9. The dynamic simulation method of layer sequence configuration evolution according to claim 1, wherein step S3 comprises the steps of: S31, extracting position data of each interval interface and physical parameter data of each interval unit based on an interval stratum space configuration model, and calculating a seismic wave impedance value of each interval unit; And S32, performing forward modeling calculation on the seismic wave field based on the seismic wave impedance values of each layer sequence unit to generate a forward seismic data volume.
10. The method of dynamic simulation of layer sequence configuration evolution according to claim 1, wherein step S4 comprises the steps of: s41, quantitatively comparing a forward seismic data volume with an actual seismic data volume, obtaining a comparison error, and judging whether the comparison error is larger than a preset threshold value or not; Step S42, when the comparison error is larger than a preset threshold value, adjusting simulation parameters of multi-period structural deformation numerical simulation according to the comparison result, and carrying out multi-period structural deformation numerical simulation again; And S43, extracting model data of each stage of multi-stage structural deformation numerical simulation when the comparison error is smaller than or equal to a preset threshold value, and integrating and generating layer sequence configuration dynamic evolution process data of the whole geological period of the research area.

Description

Dynamic simulation method for layer sequence configuration evolution Technical Field The invention relates to the technical field of evolution dynamic simulation, in particular to a layer sequence configuration evolution dynamic simulation method. Background The dynamic evolution deformation process of the layer sequence stratum configuration is a core foundation for understanding basin formation and resource distribution rules, and has important guiding significance for mineral resource exploration of oil gas and the like. In the prior art, simulation methods for layer sequence formation evolution have focused on static simulation of a deposition process or a single structural event, or simulation analysis of layer sequence formation mechanisms through basin settlement and filling processes. However, the prior art has the obvious defects that on one hand, the continuous transformation process of the stratum in the sequence by the deformation of the multi-stage structure (such as multi-stage stress effect, alternating lifting and denudation and settlement) in different geological periods is difficult to completely reproduce, the dynamic evolution track from the early initial state to the current configuration of the stratum cannot be accurately depicted, and on the other hand, the simulation result is matched with the actual geological conditions due to the lack of an effective verification means, so that the reliability and the precision of the simulation result are difficult to ensure, and the accurate theoretical support cannot be provided for the subsequent geological exploration. Therefore, a method capable of completely simulating the multi-stage structural deformation process and verifying the simulation result through actual data is needed, so that the dynamic evolution deformation process of the layer sequence configuration is precisely and clearly determined. Disclosure of Invention Based on this, it is necessary to provide a dynamic simulation method for layer sequence configuration evolution to solve at least one of the above technical problems. In order to achieve the purpose, the dynamic simulation method for the layer sequence configuration evolution comprises the following steps: Step S1, collecting geological data of a research area, determining a research area structure evolution sequence and research area basic geological data based on the geological data, and constructing an initial stratum geological model; s2, carrying out multi-period structural deformation numerical simulation on an initial stratum geological model based on a research area structural evolution sequence to generate an interval stratum space configuration model; s3, performing forward modeling of the earthquake based on the layer sequence stratum space configuration model to generate a forward earthquake data volume; And S4, comparing the forward seismic data volume with the acquired actual seismic data volume, carrying out iterative correction on simulation parameters of multi-period structural deformation numerical simulation according to the comparison result, and outputting the layer sequence configuration dynamic evolution process data of the full geological period of the research area when the errors of the forward seismic data volume and the actual seismic data volume meet the preset threshold. The method has the advantages that the continuous modification process of multi-stage structural deformation to the layer sequence stratum can be completely simulated through key links such as stress loading, lifting, denudation and settlement in the structural evolution process in a staged reproduction mode, the limitation of single-stage simulation or static simulation in the prior art is broken through, and the accurate reproduction of the dynamic evolution process of the layer sequence configuration is realized. The link of seismic forward modeling and actual seismic data comparison verification is introduced, dynamic optimization of simulation parameters is realized through quantitative comparison, reliability and precision of a layer sequence evolution simulation result are remarkably improved, and the problem that an effective verification means is lacking in a simulation result in the prior art is solved. The method can be used for determining the corresponding relation between the structural deformation parameters (stress direction and magnitude) and the layer sequence configuration change in different geological periods, provides accurate theoretical basis for deep understanding of the structural evolution mechanism and layer sequence development rule of a research area, and has important guiding value for exploration and deployment of mineral resources such as oil gas. Drawings FIG. 1 is a schematic flow chart of a dynamic simulation method for layer sequence configuration evolution; FIG. 2 is a flowchart illustrating the detailed implementation of step S2 in FIG. 1; FIG. 3 is a schematic illustration of geolog