85 results about "Tectonic model" patented technology

The invention discloses a geological modeling, crack propagation and fluid-solid coupling production prediction integrated evaluation method, and relates to the field of multiple technologies, and the method comprises the steps: constructing a three-dimensional geological model of a deep shale gas reservoir; according to the construction model, the attribute model, the three-dimensional ground stress model and the rock mechanical parameter model, a hydraulic fracture model is constructed; based on the hydraulic fracture model and the three-dimensional geological model of the deep shale gas reservoir, establishing a fluid-solid coupling productivity simulation mathematical model of the deep shale gas reservoir; according to the fluid-solid coupling productivity simulation mathematical model of the deep shale gas reservoir, the fractured horizontal well yield of the shale gas reservoir is predicted, and a prediction result is comprehensively evaluated and optimized. According to the method, multiple links of geological modeling, fracture propagation simulation, fluid-solid coupling production prediction and the like are integrated, and the geological characteristics of the gas reservoir, the fracture propagation rule and the interaction between fluid flow and solid deformation are comprehensively considered, so that comprehensive evaluation and optimal development of the deep shale gas reservoir are realized.

The invention relates to the technical field of mineral resource exploration. The prospecting method, device and equipment based on the multi-source geological relation data and the medium are provided, the method comprises the steps that space-time alignment and standardization processing are conducted on obtained geological historical evolution data, geophysical field data, geochemical migration data and remote sensing alteration information, and a dynamic knowledge graph is generated; performing mineralization stage division processing on the geological historical evolution data to obtain a mineralization stage division result; integrating the fluid migration space-time path network, performing three-dimensional dynamic modeling processing, and generating a staged three-dimensional metallogenic evolution model; extracting a stage-specific geological mark combination from the staged three-dimensional metallogenic evolution model, performing knowledge reasoning processing based on a preset historical ore deposit rule base, and outputting an ore prospecting target region and a metallogenic process constraint basis which meet a preset confidence coefficient condition, so as to improve the precision of a structural model, generate a staged fluid dynamic field, and improve the precision of the metallogenic process. And the target region prediction confidence is enhanced.

The invention belongs to the technical field of seismic structure models, and discloses a seismic structure model construction method and system, and the method comprises the steps: constructing a database; constructing a three-dimensional digital elevation model; constructing a three-dimensional geological structure model; constructing an earthquake three-dimensional earthquake structure model; constructing a three-dimensional P-wave velocity structure model; and analyzing a pregnancy and earthquake environment. The three-dimensional seismic geologic model of the Changning seismic region is constructed by taking the Changning seismic region in southern Sichuan as a modeling object and integrating superficial geology, landform (DEM), seismic fine positioning data and main fracture distribution, a deep seismic detection result, a two-dimensional seismic reflection profile, drilling data and the like, the spatial distribution and structure of the three-dimensional seismic geologic model are finely determined, and the three-dimensional seismic geologic model of the Changning seismic region is constructed. Analysis of deep and shallow tectonic deformation characteristics and tectonic styles has important guiding significance for discussing the earthquake-pregnancy environment and evaluating the earthquake risk of the deep and shallow tectonic deformation.

The invention belongs to the technical field of shale oil and gas development, and particularly discloses a multi-source information fused horizontal well casing deformation risk section prediction method, which comprises the following steps: representing shaft crack zone information; establishing a work area construction model and an attribute model; with shaft crack zone information as a constraint, disturbance is performed on crack information predicted based on seismic data, and a three-dimensional crack network model is established; a work area geomechanical model is established, and crustal stress distribution characteristics in the shaft direction of the horizontal well are obtained; a work area casing deformation comprehensive database is established by combining casing mechanical attribute data and work area fracturing construction parameters, and fault zone activity factors are obtained based on the Mohr-Coulomb criterion; and establishing a stratum-fracture-wellbore model, obtaining a mathematical model of fracture zone activity factors and casing deformation degrees, and dividing casing deformation risk grades. According to the method, accurate recognition of the well periphery crack network and advanced pre-judgment of the well periphery crack activation risk and the wellbore casing deformation can be achieved, and guidance is provided for formulating targeted casing deformation prevention and control measures.

The invention discloses a method and a system for constructing a multi-level geologic structure model based on electromagnetic detection, and the method comprises the steps: transmitting electromagnetic signals with different frequencies at all measurement points through an electromagnetic detector, carrying out the resistivity inversion through apparent resistance and impedance phase, obtaining a geologic electrical structure, dividing non-uniform and uniform electrical geology based on electromagnetic static displacement, and obtaining a multi-level geologic structure model. Analyzing an orthogonal component magnetic field to obtain an electromagnetic response parameter and a polarization ellipse parameter; determining an electric field diffusion curve; obtaining an electric field distribution model through finite difference method inversion; deducing underground geological spatial form and distribution law; and finally, calculating an electromagnetic response curved surface to obtain a two-dimensional profile curve, and performing three-dimensional reconstruction to obtain a multi-level geologic structure model. The method not only can improve the precision and reliability of the structure model, but also has good interpretability, and can be directly applied to a construction system of a multilevel geological structure model based on electromagnetic detection.

The invention relates to a gold mine three-dimensional modeling and target prediction method based on multi-source data fusion. Aiming at the problems of low grade and large burial depth span of the layered hydrothermal gold deposit and two-dimensional limitation and distortion caused by single-source data existing in a traditional modeling method, a three-dimensional joint database is constructed by integrating multi-source data. According to the technical scheme, a three-dimensional joint database is utilized, earth surface, geological stratum, fault occurrence and trend information is determined, and a three-dimensional earth surface and structure model is constructed; based on an explicit and implicit combined modeling method, three-dimensional space distribution of two-long-spot rocks is determined, and a three-dimensional lithologic model is constructed; a structure-lithology coupling constraint modeling method is innovatively adopted, and a three-dimensional grade model is constructed by utilizing an implicit modeling method under the common constraint of a structure model and a lithology model; and finally, target area delineation is carried out according to the three-dimensional geologic model. Compared with a traditional method, the method has the advantages that the problem of distortion of model construction caused by a single data type is effectively solved, and accurate depiction of the ore body is realized. And the constraint of the cause mode on the three-dimensional model is highlighted, so that the target region delineation is more in line with geological knowledge.

The invention belongs to the technical field of three-dimensional geologic modeling, and particularly relates to a three-dimensional modeling method for a structural plane based on strike control and occurrence constraint, which comprises the following steps of: extracting strata, fault strike lines and occurrence data based on a plane geologic map of a modeling target area, and extracting coordinates and azimuth angles of points on the strike lines through a curvature-constrained equal-interval sampling method; generating layer control points in batches by changing the sampling depth in combination with occurrence data; expanding a layer control point set by utilizing a stratum or fault layering point disclosed by a drill hole or a geological section, and further creating an irregular triangulation network of a structural plane; and extracting a structural surface intersection line by adopting a collision detection algorithm, reconstructing a stratum contact relation and a fault network space topological relation, finally obtaining a layer data file of the structural model, and completing data storage and three-dimensional visualization of the model. According to the method, the model of the structural plane such as the stratum and the fault can be quickly established, the spatial topological relation is reconstructed, and data file generation and three-dimensional visualization of the structural model are realized.

The invention belongs to the technical field of geophysical exploration, and particularly relates to a two-section type phase control high-precision speed field building method for a complex structure area. A two-section type phase control high-precision speed field building method for a complex structure area comprises the following steps that a shallow surface layer area marker bed in a research area is determined, drilled wells evenly distributed in the research area are screened out, and according to the shallow surface layer area marker bed and well logging data of the drilled wells, the shallow surface layer area marker bed and the well logging data of the drilled wells are determined; establishing a three-dimensional structure model and determining a shallow surface layer velocity field of the research area; determining a geological anomalous body and a marker bed of a middle-deep layer area in the research area through seismic geology combination, establishing a middle-deep layer structure model, and determining a middle-deep layer velocity field of the research area; a shallow surface layer velocity field and a middle-deep layer velocity field are fused, a velocity field of a research area is established, time-depth conversion of a time-domain seismic data volume is completed, and a depth-domain seismic data volume is obtained, so that the structural interpretation precision in the research area is improved, and support is provided for well position deployment and storage increase and production.

The invention discloses a sedimentary facies model construction method and device, equipment and a storage medium. The method comprises the following steps: acquiring regional geological parameters of a target construction region; and determining structure interpretation data according to the regional geological parameters, and constructing a three-dimensional structure model according to the structure interpretation data. And analyzing distribution information of each lithofacies in the three-dimensional structure model according to regional logging data, and constructing a lithofacies framework model. A target sedimentary facies model corresponding to the target construction area is constructed according to the three-dimensional sedimentary point cloud and the lithofacies framework model based on a multi-point geostatistics algorithm, and the three-dimensional sedimentary point cloud is obtained by performing actual sedimentary simulation on the target sedimentary construction model obtained through pre-training based on the area geological parameters of the target construction area. According to the technical scheme, the three-dimensional sedimentary point cloud of the research area can be accurately extracted, high geological objectivity and physical authenticity are achieved, and therefore the objectivity and geological reliability of the sedimentary facies model are remarkably improved.

The invention discloses a multi-source data fusion-oriented comprehensive geological cause analysis method and system. The method comprises the following steps of 1, generating semantic mapping data; 2, constructing a cause characteristic pedigree tree, and outputting cause main chain data; step 3, generating geological space-time interlacing data; 4, limiting a time window and a space window, and generating spectrum fusion modeling data through a spectrum-guided fusion converter; 5, constructing a three-dimensional voxel grid, and carrying out dynamic clustering to generate a three-dimensional construction model; step 6, generating geological evolution field data; and 7, inputting the geological evolution field data into the improved CrossViT model, setting an interlayer cross attention unit, reconstructing a Token interaction mode, introducing a cause field constraint attention modulation mechanism, and outputting a geological cause analysis result. According to the method, high-precision analysis of complex geological causes is realized through multi-source data semantic mapping, cause pedigree reasoning and CrossViT model improvement.

A method, apparatus, electronic device, and storage medium for identifying the connectivity of a fault zone provided by the present disclosure. The method includes obtaining three-dimensional seismic data of a target fault zone and establishing a three-dimensional structural model of the target fault zone based on the three-dimensional seismic data; obtaining logging data and core data of the target fault zone and determining the geomechanical parameters of the target fault zone based on the logging data and the core data; establishing a three-dimensional geomechanical model of the target fault based on the three-dimensional structural model and the geomechanical parameters; performing finite element analysis on the three-dimensional geomechanical model to obtain a stress field model; and calculating the connectivity coefficients of different attitudes of the target fault zone based on the stress field model, so as to evaluate the connectivity of different attitudes of the target fault zone. This method can give a quantitative judgment on the connectivity degree of the fault zone, which is of great significance.

The invention belongs to the field of oil and gas field exploration and development, and discloses a numerical reservoir model optimization and history fitting method and related device.The method comprises the steps that firstly, geological exploration data are utilized, a spatial clustering algorithm is adopted to automatically determine the local updating range of a structural model, and structural layers and stratums are optimized through spatial interpolation; outputting an optimized construction model and uncertainty measurement; based on the model and logging lithofacies attribute data, adaptively identifying a lithofacies updating key area and variation function parameters by applying a machine learning algorithm, and performing lithofacies simulation to output an optimized lithofacies model; combining the porosity, permeability and saturation attribute data, adaptively determining an attribute optimization range and variation function parameters by adopting a probabilistic neural network, and outputting an optimized attribute model through phase control attribute modeling; a three-dimensional oil-water two-phase black oil seepage model is constructed, a global optimization algorithm is adopted to automatically adjust parameters based on a target function, simulation data is calculated until convergence, optimal parameters are output to complete historical fitting, and efficient and reliable intelligent support is provided for complex oil reservoir development.

The invention discloses a fault sample generation method based on oil and gas field seismic data, and belongs to geophysical exploration and machine learning data engineering.The technical scheme includes the steps that seismic exploration data, well data and actual geological data of an actual work area are obtained; establishing an initial structure model based on seismic exploration data, well data and actual geological data; iteratively adjusting the initial structure model according to a forward modeling result to obtain a calibration structure model; performing process simulation based on the calibration structure model, and outputting a plurality of geologic bodies according to time steps; and converting the geologic body into a forward modeling parameter model, carrying out seismic forward modeling to generate a seismic data body, and carrying out data enhancement and sample amplification. The method has the advantages that compared with other sample generation methods, the generated samples better conform to the actual geological law, so that the sample quality is improved, and meanwhile, the number of the samples can be greatly increased by simulating the forward modeling process of the actual body.

The present invention discloses a method for correcting well logging curves of a deviated well, comprising the following steps: analyzing and interpreting seismic profiles to obtain structural interpretation data; drilling and measuring relevant geological parameters to obtain original data of the deviated well and performing analysis and comparison to obtain well point layering data; establishing a structural framework model and performing three-dimensional grid division to obtain a three-dimensional structural model; importing the well logging curves that need to be corrected into the three-dimensional structural model; uniformly interpolating under the constraints of the three-dimensional structural model; establishing an equivalent virtual vertical well, extracting parameters of the geological parameter model to the equivalent virtual vertical well, and obtaining corrected well logging curves. The present invention also discloses an application of a method for correcting well logging curves of a deviated well. The present invention realizes the description of the three-dimensional spatial distribution characteristics of the well logging data of the deviated well by means of three-dimensional modeling, and creates an equivalent virtual vertical well to sample the logging data in the three-dimensional space to the equivalent virtual vertical well, thereby realizing the correction of the well logging curves of the deviated well.

The invention discloses a three-dimensional geological modeling method and system for a gas reservoir of a gas storage. The method comprises the steps of modeling data preprocessing, wherein layering and well track errors are analyzed and corrected, a denudation area range is represented, stratigraphic structure data are processed, logging data and experimental data are processed and analyzed, model and constraint body data are determined, and a database is formed; building a construction model: building the construction model based on a plane gridding method, and carrying out local construction adjustment and verification; establishing an attribute model: simulating the physical property parameters based on the sedimentary microfacies type of the position of the physical property parameter point and forming the attribute model; and reserve calculation and uncertainty analysis: calculating the reserve of the gas reservoir based on the construction model and the attribute model, and performing cross check by using the average reservoir thickness and the attribute value of the model input data in comparison with the calculation value based on the planar graph. According to the method, a plurality of modeling methods are adopted for interactively processing the contact relation between the fault and the stratum, and the problems of high and steep recoil structures, thin reservoir denudation area characterization and the like can be effectively solved.

This disclosure relates to the field of seismic exploration technology, and particularly to a method, equipment, and medium for depth domain velocity model analysis based on well-seismic co-processing. The method includes: extracting stratigraphic and fault information from seismic data to construct a three-dimensional depth domain structural model of the target three-dimensional work area; smoothing well logging velocities and extrapolating the smoothed well logging velocities across the entire work area based on the three-dimensional depth domain structural model; inverting an initial velocity model based on the three-dimensional depth domain structural model and the overall work area well logging velocity model; iterating the initial depth domain velocity model based on the structural properties of the three-dimensional depth domain structural model to obtain an isotropic depth domain velocity model; analyzing the anisotropic parameters and anisotropic velocities of the target three-dimensional work area, and iterating the isotropic velocity model based on the anisotropic parameters and anisotropic velocities to obtain the depth domain velocity model. This invention can improve the accuracy of depth domain velocity model analysis.

The invention provides a carbon dioxide sequestration potential assessment method and device based on grid attribute assignment, and relates to the technical field of carbon dioxide capture, utilization and sequestration, and the method comprises the steps: respectively constructing a three-dimensional structure model and a sedimentary facies model of a carbon dioxide sequestration region through structure characteristic analysis and sedimentary facies analysis; further establishing a coarsening model of the carbon dioxide sequestration geologic body; multi-source and multi-scale data are obtained, carbon sequestration attribute information in the multi-source and multi-scale data is mined, a carbon sequestration attribute prediction model is constructed, and the prediction model is used for predicting the carbon sequestration attribute information corresponding to the grids; according to the carbon sequestration attribute information predicted by the carbon sequestration attribute prediction model, assigning values to each grid in the coarsening model of the carbon dioxide sequestration geologic body to obtain a three-dimensional carbon sequestration attribute model of the carbon dioxide sequestration region; and performing carbon dioxide sequestration potential evaluation by using the three-dimensional carbon sequestration attribute model of the carbon dioxide sequestration area to obtain sequestration potential evaluation data.

The embodiment of the invention provides a reservoir reserve prediction method and device and a storage medium. The method comprises the steps of obtaining geological parameters of a target oil and gas field; the geological parameters comprise core data, logging data and seismic data; generating a structure model according to the geological parameters; the structural model is formed by matching a layer model and a fault model; the structural model is used for determining a stratigraphic relation and a fault relation; obtaining a phase model through phase simulation based on the logging data; the phase model is used for indicating the sand body distribution condition; constructing an attribute model based on the logging data and a facies simulation result corresponding to the facies model; determining an oil-gas system and an oil-gas-water interface through comprehensive oil reservoir geological analysis; combining the structure model, the phase model, the attribute model, the oil-gas system and the oil-gas-water interface to construct a reserve model; the reserve model is used for predicting oil and gas reserves of the target oil and gas field. The method objectively and accurately predicts the oil and gas reserves of the reservoir, and has good practical application value.

The invention relates to the technical field of oil and gas field development, in particular to a three-dimensional fine geologic model vertical grid optimization method, which comprises the following steps of: analyzing the relative position of an interlayer in a small layer according to a logging interpretation data table, and judging the plane distribution range of the interlayer according to an adjacent well; the relative positions of the sand body and the interlayer interface are calculated, the relative position sorting data are screened, and stratigraphic grid division is completed; carrying out vertical grid division on the geological model according to the screened relative position sorting data, and establishing a three-dimensional structure model capable of depicting a minimum sand body and an interlayer; and predicting the sand body and the interlayer by adopting a sequential indication method to obtain a three-dimensional lithofacies model reflecting the sand body, the mudstone and the interlayer. According to the method, the problems of thin interbed reservoir and interlayer information loss and incompleteness and the like in a traditional geologic model can be effectively solved; a thin interbed reservoir and an interlayer can be better displayed in a reservoir model according to a structural model established by a fine geologic model vertical grid optimization method.

The invention belongs to the technical field of reservoir geological modeling, and provides a clastic rock oil and gas reservoir key interface characterization modeling method, device, equipment and medium, and the method comprises the steps: constructing a geological modeling basic database; key interface identification and representation are carried out based on the constructed geological modeling basic database; constructing a construction model based on the recognition and representation results of the key interface, the seismic data volume and the well data; checking whether a geological interface in the tectonic model is consistent with well data and seismic interpretation, and if not, optimizing the tectonic model; based on the sedimentary microfacies data, a deterministic assignment method is adopted to construct a sedimentary microfacies model; based on the sedimentary microfacies model, a sequential indication method is adopted for simulation, and a lithologic model is constructed; constructing an attribute model based on the lithologic model; according to the method, the structure model is optimized, so that the structure model restores the structure characteristics as much as possible, and reliable spatial constraints are provided for coarsening and modeling of attributes such as lithology, porosity, permeability and saturation.

The invention discloses a seismic inversion method and system, a storage medium and equipment, and relates to the technical field of geophysical exploration interpretation, and the method introduces various adaptive prior information through learning, and improves the interpretability and controllability of an inversion process. According to the system, based on a multi-scale feature fusion and dictionary learning method, macroscopic features in a construction model, transverse features in seismic data and vertical features in logging data are integrated together, and seismic constraint inversion is carried out. Model testing verifies that compared with a traditional inversion constraint method, the method has higher resolution and better stability. The validity of the method is also verified through actual data. In conclusion, according to the method provided by the embodiment of the invention, the existing prior information is fully mined and utilized, and the resolution, the precision and the stability of the inversion result are remarkably improved.

The present specification relates to the field of oil and gas field exploration and development, and particularly relates to a structure modeling method and device based on horizontal well layering. The method comprises: determining logging characteristics and logging identification marks of a straight well section according to logging data of the straight well section in a study area; determining layer-penetrating point information of a horizontal well according to logging curves of the horizontal well and comparing with the logging characteristics; constructing a well trajectory one section of the horizontal well according to seismic interpretation data and the logging identification marks; extracting corresponding isostatic elevation data of the layer-penetrating point on the well trajectory one section according to the logging identification marks; determining a correction amount according to the elevation of the layer-penetrating point and the isostatic elevation data; and correcting structure surfaces of each small layer according to the correction amount to obtain a structure model. The present scheme solves the problem that it is difficult to establish an accurate, reliable and fine structure model due to the small amount of small layer interface data in structure modeling of an oil and gas reservoir developed mainly by horizontal wells.

The invention relates to the technical field of oil field development, in particular to a high-precision three-dimensional velocity field establishment method and device, equipment and a medium, and the method comprises the steps: obtaining a time domain structure interpretation result according to the corresponding relation between an earthquake and a geologic horizon, and obtaining a high-precision three-dimensional velocity field according to time domain geologic stratified data by taking the time domain structure interpretation result as a constraint; establishing a time domain three-dimensional construction model; obtaining a depth domain structure interpretation result through time-depth conversion, and building a depth domain three-dimensional structure model by taking the depth domain structure interpretation result as a constraint according to the depth domain geological stratified data; according to the three-dimensional structure model, the layer velocity of seismic waves propagating in the geologic horizon is determined, and according to the layer velocity, a three-dimensional space velocity field is established by adopting a stacked velocity field modeling method. The problems that an existing velocity field establishing method is large in longitudinal error, the geologic body layer penetrating phenomenon is prone to occurring, and the requirements for three-dimensional seismic information body high-precision time-depth conversion and small-layer-scale well-seismic combined reservoir characterization cannot be met are solved.

This invention belongs to the field of seismic exploration technology, specifically a near-surface node seismic exploration system and its data collaborative acquisition method; it includes miniaturized intelligent node units, adaptive mesh network base stations, and a cloud-based collaborative processing platform. Each node integrates a three-component sensor, a hybrid timing module, an edge computing unit, and a multimodal communication interface, employing an adaptive coupling mechanism to adapt to complex terrain. The acquisition method includes intelligent deployment planning, adaptive network construction, multimodal data acquisition, edge-cloud collaborative processing, and dynamic quality control. The nodes are buried shallowly below the surface, receiving reflected seismic wave signals from deep underground targets without being affected by the complex shallow surface strata above. The node units can also receive direct signals from ground-based seismic sources, used to calibrate and detect near-surface velocities and tectonic models. This invention offers advantages such as high density and low cost, high-precision synchronization across all scenarios, efficient data transmission, and multi-physics field fusion.

The present invention provides a geological modeling method for a carbonate reservoir with permeable interlayers, the geological modeling method comprising the following steps: (1) selecting a target work area, and sequentially establishing a structural model, a sedimentary phase model, and an attribute model; (2) determining the lower limit standard of the effective thickness of the reservoir, and establishing a net-to-gross ratio model; (3) fitting the geological reserves of the reservoir according to the attribute model obtained in step (1) and the net-to-gross ratio model obtained in step (2); (4) establishing a plate of pore volume and geological reserves according to the reserve fitting standard; (5) defining the upper limit of the pore volume based on the constant volume principle and the plate obtained in step (4), and establishing a variable net-to-gross ratio model; (6) outputting the specific attributes of the model based on the variable net-to-gross ratio model obtained in step (5), and performing numerical simulation fitting. The method provided by the present invention improves the accuracy of the numerical simulation of the formation pressure and water content fitting of the reservoir, thereby ensuring the rationality of the prediction of the indicators of the reservoir development plan.

The present invention discloses a method, system and storage medium for evaluating the degree of fit between a structural model and seismic data, and relates to the technical field of data processing. The method comprises: obtaining an original structural model and original seismic data; performing a flattening operation on the original structural model to obtain a flattened structural model; comparing the flattened structural model with the original structural model to obtain a structural conversion amount, and migrating the structural conversion amount to seismic data to obtain flattened seismic data; identifying and obtaining a target layer seismic axis based on the flattened seismic data, and traversing the target layer seismic axis to perform a seismic axis continuous length analysis to obtain a seismic axis continuous length data set; calculating a corresponding degree of fit evaluation index based on the seismic axis continuous length data set to obtain a degree of fit evaluation value; and outputting a degree of fit evaluation result based on the degree of fit evaluation value, thereby achieving the technical effects of improved intuitiveness, improved work efficiency and quantified results.

The invention relates to a tectonic evolution method and device for recovering denudation strata through trend-structure extrapolation of an extended fractured basin, and the method comprises the steps: collecting geology, earthquake and logging information of the extended fractured basin, and building a three-dimensional geologic model of the extended fractured basin; carrying out horizon interpretation on a two-dimensional earthquake and a three-dimensional earthquake in a research area through seismic event stratum tracking by combining seismic reflection characteristics and drilling data on the basis of a synthetic seismic record calibration stratum; carrying out unconformity interface and fracture interpretation on the stretching fault basin, establishing a construction model, dividing stratums corresponding to the unconformity interface of the stretching fault basin, and determining formation time, distribution and evolution of the stratums; establishing a typical structure style, and selecting a typical profile; the denudated syngenetic fault and / or boundary fault and the stratum are / is recovered; and extrapolating and recovering the denudation fault and the stratum through a trend-structure external technology, and recovering a structure evolution history diagram. According to the method, the denudated stratum can be reliably recovered.

The invention discloses a tight gas reservoir river sandstone geology modeling method and device, and the method comprises the steps: firstly building a seismic interpretation speed model through logging data and seismic data, and converting a seismic interpretation result and inversion data from a time domain to a depth domain; the method comprises the steps that firstly, a stratigraphic structure model of a river channel sand body is established on the basis of accurate stratigraphic and sand layer structure data, then under the control of the structure model, lithofacies are subjected to phase conversion through depth domain sensitive seismic data to obtain a seismic inversion lithofacies body, and then lithofacies simulation is carried out on the basis of ground lithofacies division data; attribute values of well point calculation are used as basic data in the attribute model, seismic inversion attribute data are used as trends to carry out coKriging simulation calculation, and porosity, permeability and saturation models under different phase types are established. The model constructed by the method can well guide well position deployment, and meanwhile, a high-quality geologic model is provided for gas reservoir numerical simulation.

The present application relates to a kind of shale gas well thin layer structure modeling method and modeling system.Shale gas well thin layer structure modeling method, by well seismic data combination actual drilling data, introduce "nail point" layer control method to establish standard layer horizon, and utilize thickness constraint to combine well layering data correction to generate remaining horizon, then, by Petrel software, establish structure model."Nail point" layer control method can obtain more control point data without adding virtual well, and can reduce the uncertainty of control point data, and then improve the control precision of standard layer.The present application method can avoid the phenomenon of shale gas well thin layer crossing in the process of geological modeling, and ensure the drilling rate of horizontal well, ensure the accuracy of structure model.The method can be widely used in the deployment and scheme adjustment of exploration and development, and has important guiding significance for later drilling and fracturing simulation on the same platform.The present application is also suitable for the update of shale gas well thin layer structure model and the use of other geological modeling software.

The application provides a large-scale coupling network simulation generation method and system based on three-dimensional geological structure, and belongs to the field of geological modeling and numerical simulation. The method comprises the following steps: integrating multi-source exploration data and constructing a structured geological database; performing geological interpretation based on the database to generate a stratum contour line; reconstructing three-dimensional entity models of strata, main faults and roadways respectively by using a triangular mesh modeling method based on the contour line, and coupling to generate a comprehensive three-dimensional hydrogeological structure model; converting model data into a standardized format compatible with multi-physical field simulation software through a special data interface and importing the model data into the simulation environment, giving the model physical properties, setting boundary conditions and coupling mechanisms, and completing large-scale coupling network simulation. The application solves the problems of insufficient multi-source data fusion, model distortion caused by artificial generalization and the fragmentation of modeling and simulation processes in traditional methods, and significantly improves the accuracy of the geological model and the reliability of the simulation analysis.