22 results about "Reservoir modeling" patented technology

The invention belongs to the technical field of oilfield development, and discloses an oil and gas reservoir modeling processing system based on clastic rocks and a use method of the oil and gas reservoir modeling processing system. The data processing system is used for processing fault and logging data, geological stratification data and well perforation data, the grid management system is used for dividing and encrypting grid types, the model building system is used for building a digital-analog model and an oil-gas reservoir relation model, and the digital-analog management system is used for outputting the built model. And the established digital model is convenient to modify and reconstruct, so that the digital model pretreatment work requirement of complex oil and gas reservoir types is met, the historical fitting speed of subsequently realizing numerical simulation is improved, and the modeling treatment of clastic rock oil and gas reservoirs is facilitated.

The embodiment of the invention provides a thin interlayer and phase control physical property cause sand body configuration model construction method and system, and belongs to the technical field of reservoir modeling. The method comprises the following steps: identifying fluvial facies reservoir distribution characteristics based on exploration data, and constructing a corresponding cause sand body reservoir configuration model; obtaining a corresponding small-layer sand body deterministic model based on the cause sand body reservoir configuration model; on the basis of the deterministic model of the small-layer sand body, performing representation of an internal configuration interface of the sand body based on a lateral lamination model and an adaptive triangular mesh generation algorithm; and generating a distribution model of each lithofacies unit based on representation of a configuration interface in the sand body, and constructing a physical property model for fine modeling and heterogeneity description of high and low permeability sections in the configuration based on a phase control stochastic simulation method. According to the scheme, the limitations of insufficient precision, unreasonable transition and low calculation efficiency in traditional modeling are effectively overcome, and high-precision geologic model support is provided for reservoir management and oil reservoir development.

The application discloses a reservoir intelligent inversion method and related device, relates to the technical field of reservoir intelligent inversion, and comprises the following steps: obtaining multi-source heterogeneous data of a target area and preprocessing; constructing an initial geological model generator based on a conditional diffusion model, and optimizing hidden space parameters in a manner of seismic wave forward simulation; constructing a reservoir knowledge graph and adaptively pretraining and migrating the model online; performing task demand analysis, task decomposition and dynamic collaborative execution on a reservoir modeling task based on a thinking chain technology and a language large model technology, and obtaining iteratively optimized hidden space parameters; inputting the iteratively optimized hidden space parameters into the optimized geological model generator, outputting a three-dimensional distribution model, and extracting a confidence interval feature; incrementally updating the reservoir knowledge graph, determining a reservoir model conforming to a geological mode feature and matching a seismic waveform, and realizing reservoir intelligent inversion. The application can improve the accuracy and efficiency of reservoir inversion.

The invention discloses a reservoir porosity real-time prediction method and system based on alkane gas curvature and a storage medium, relates to the technical field of oil and gas reservoir development, and aims to solve the problems of insufficient utilization of dynamic characteristics of alkane gas curvature, poor real-time performance and limited heterogeneous reservoir modeling capability of an existing method. According to the technical key points, the method comprises the following steps: S100, acquiring alkane gas concentration and carbon isotope ratio data in a drilling process in real time, and calculating a curvature characteristic of the alkane gas concentration; s200, performing dynamic feature extraction on the alkane gas curvature; s300, performing dynamic weighted feature fusion on the curvature dynamic feature and the carbon isotope ratio to obtain fusion data; s400, constructing a BiLSTM model, training the BiLSTM model based on the fusion data, generating a hidden state, introducing an attention mechanism to perform dynamic weighting, and combining with an adjacent matrix of a reservoir geological unit to realize space enhancement; and S500, on the basis of the BiLSTM model, in combination with physical constraints, performing real-time prediction on the porosity of the reservoir.

The invention discloses a reservoir modeling task processing method based on a mixed domain parallel perception generative adversarial network, and relates to the technical field of geostatistics, and the method comprises the steps: carrying out the parameter migration and expansion of original sample data through a cross-domain migration-driven lightweight reservoir configuration sample enhancement model on the basis of the training parameters of an existing sample; a multi-dimensional mixed domain joint representation module is utilized, a parallel attention mechanism supporting multi-source features and a multi-scale feature deep fusion mechanism are introduced, and a mixed domain-based parallel perception fusion generative adversarial network is constructed; inputting the sample data into the generative adversarial network, outputting target data, and performing consistency comparison on the target data and the expanded sample data set; and if the comparison is passed and the model evaluation of the generative adversarial network is passed, the reservoir configuration modeling task is processed, so that the problems of large demand of training data and insufficient feature mode mining capability are solved, the multi-scale characterization capability of the model is improved, and the model applicability and accuracy in a complex actual scene are improved.

This invention relates to the field of oil and gas reservoir modeling technology, and discloses a method for real-time calibration and trend prediction of oil and gas reservoir models that integrates dynamic production data. The invention aims to solve the technical problem that the prediction accuracy of existing reservoir models gradually decreases with changes in oilfield production dynamics after a one-time calibration, and lacks an automated, continuous correction mechanism. The method involves initial calibration of the reservoir model and generation of a baseline prediction; continuous monitoring of the deviation between actual production data and the baseline prediction; automatic calibration of the reservoir model to reduce the deviation when the deviation exceeds a preset threshold; and generation of a new production trend prediction based on the calibrated model, which replaces the baseline prediction, forming a closed loop. This invention enables the reservoir model to dynamically reflect production changes, achieves automated and rolling updates of model parameters, and provides a way to generate probabilistic prediction results, improving the timeliness of predictions and the reliability of decision support.

The embodiment of the invention provides a carbon sequestration geological exploration method and device, a storage medium and electronic equipment, and the method comprises the steps: carrying out the three-dimensional reservoir modeling of a carbon sequestration region according to the three-dimensional geophysical prospecting data of a target resolution of the carbon sequestration region, so as to obtain a three-dimensional model of the carbon sequestration region; performing carbon dioxide migration numerical simulation based on a migration rule of supercritical carbon dioxide and the three-dimensional model to obtain a distribution condition of the supercritical carbon dioxide in the carbon sequestration area; and according to the distribution condition, a target horizon is determined in the carbon sequestration area, and the target horizon is the horizon where the supercritical carbon dioxide is injected.

The application provides a three-dimensional reservoir modeling method based on semantic rule guidance and multi-point geostatistics, relates to the geological field, and the method comprises the following steps: arranging strata in reverse order according to deposition time, iteratively executing a finite difference interpolation algorithm from the newest stratum, and taking the current stratum as a normal vector constraint of the next stratum; quantifying the constraint of fault kinematics on the surrounding deformation zone; under the support of an implicit structure model, adopting a two-dimensional parameter optimization strategy to dynamically configure the parameters of a fast sampling algorithm; adaptively matching the local structure features of a training image through a kernel function, and globally searching for an optimal combination in a grid; finally, taking a structural model as a spatial boundary constraint, performing collaborative simulation of lithofacies parameters, generating an attribute field according to the quantile sampling rule of Euclidean distance and Hamming distance, until all grid nodes are simulated and a three-dimensional reservoir model is output. The technical problem of collaborative fusion of multi-source heterogeneous data and geological semantic rules in a complex heterogeneous reservoir is effectively solved.

The application discloses a multi-layered shale reservoir automatic modeling method based on bedding identification, specifically comprising the following steps: obtaining core samples from a shale reservoir, recording interval information, and obtaining core images; carrying out denoising processing on the core images and carrying out contrast enhancement; using a Canny edge detection algorithm to identify bedding edges of the core images; using a Hough line transformation algorithm to detect straight lines and identify bedding structure lines; judging whether the lines are straight by calculating the change of adjacent pixel points on the y-axis, calculating the depth of the lines according to the pixel coordinates of the lines; creating planes representing different beddings according to the depth values of each bedding, generating color of brightness and darkness, and further obtaining a shale multi-layered reservoir model. The automatic modeling method significantly improves the accuracy and efficiency of shale reservoir modeling, accurately identifies shale bedding characteristics by combining the bedding identification technology, and provides more detailed and reliable basic data for reservoir modeling.

The invention relates to the field of oil and gas resource exploration and development, and discloses a carbonate fractured-vuggy reservoir body modeling method and device, a storage medium and a processor, and the method comprises the steps: explaining a reservoir body corresponding to a first single well in a target area, and obtaining a hierarchical division result of the reservoir body corresponding to the first single well; performing three-dimensional structure analysis to obtain a three-dimensional geologic model corresponding to a strike-slip fracture fracture zone reservoir body in a hierarchical division result; and establishing three-dimensional geologic models corresponding to the rest of the reservoir bodies in the hierarchical division result, and fusing the three-dimensional geologic models corresponding to the reservoir bodies in the hierarchical division result to obtain the three-dimensional geologic model of the carbonate fractured-vuggy reservoir body corresponding to the first single well. According to the scheme provided by the embodiment of the invention, the presentation of the characteristics of the grid-cluster-shaped reservoir structure in the three-dimensional geologic model can be enhanced and refined, so that better modeling can be carried out aiming at the carbonate rock fault control grid-cluster-shaped structure fracture-cavity reservoir body.

The invention relates to the field of underground reservoir modeling and numerical simulation, and provides an oil reservoir model scale upgrading parameter iterative optimization method, which comprises the following steps: executing scale upgrading on a fine-scale oil reservoir model to obtain initial coarse-scale model parameters; taking a flow simulation result of the fine-scale oil reservoir model as input data, performing iterative correction on the initial upscale single-phase flow scale parameter, and generating a corrected upscale single-phase flow scale parameter; on the basis of the corrected upscaling single-phase flow scale parameter, bottom hole pressure difference correction calculation is carried out on the initial upscaling well index, and a corrected upscaling well index is obtained; the corrected upscaling single-phase flow scale parameter and the corrected upscaling well index are utilized to construct a current iteration coarse-scale oil reservoir model, the current iteration coarse-scale oil reservoir model is evaluated through relative errors, and final coarse-scale model parameters are output based on the coarse-scale oil reservoir model meeting a preset precision threshold value. According to the method, coarse scale parameters are dynamically corrected through an iterative optimization mechanism, and the scale upgrading precision is remarkably improved.

A method for generating one or more reservoir models using machine learning is provided. Generating reservoir models is typically a time-intensive idiosyncratic process. However, machine learning may be used to generate one or more reservoir models that characterize the subsurface. The machine learning may use geological data, geological concepts, reservoir stratigraphic configurations, and one or more input geological models in order to generate the one or more reservoir models. As one example, a generative adversarial network (GAN) may be used as the machine learning methodology. The GAN includes two neural networks, including a generative network (which generates candidate reservoir models) and a discriminative network (which evaluates the candidate reservoir models), contest with each other in order to generate the reservoir models.

The invention discloses a thin reservoir modeling method capable of accurately meeting well point and geological map constraints, relates to a geological modeling method, and particularly relates to a thin reservoir modeling method capable of accurately meeting the well point and geological map constraints, which can keep various attribute thicknesses calculated by a model consistent with constrained original maps. Comprising the following steps that basic information of a block is loaded into modeling software, and the basic information comprises a seismic interpretation result, a coordinate well position, well deviation, well logging curve data and well point layering data; according to the method, a logging curve and test analysis data are comprehensively utilized, firstly, making of a four-relation chart and establishment of an interpretation model are completed, then logging data are processed and interpreted, and finally all parameters are subjected to layered statistics; according to the method, the quality of the model can be controlled by adopting a phase control and trend body modeling method, so that the model at the well point is ensured to be consistent with actually measured data, and the model can be matched with a constraint map in a predicted calculation area.

The application discloses a river deposition simulation and data acquisition integrated device for oil and gas reservoir prediction, and relates to the field of petroleum geology.The device comprises a central control unit, wherein the central control unit comprises a water power control system, a sand supply and deposition system, a river evolution observation and data acquisition system, a digital control and analysis system and an oil and gas reservoir prediction coupling module.The river deposition simulation and data acquisition integrated device for oil and gas reservoir prediction has high control precision, can realize linkage regulation and control of multiple parameters such as flow velocity, slope, sand supply amount and water level, can accurately simulate the dynamic process of river deposition under controllable conditions, can collect fluid parameter and deposition form data in real time, and can realize quantitative correlation from the deposition experiment to the reservoir structure prediction by combining digital processing with reservoir modeling technology, thereby providing reliable experimental basis and data support for oil and gas geological research and reservoir prediction.

The invention relates to the technical field of petroleum geophysical exploration, and particularly discloses a porosity prediction method and device based on seismic lithofacies constraint, and the method comprises the steps: recognizing a sandstone facies and a mudstone facies of a target layer based on a sand mudstone sensitive rock factor; aiming at a sandstone phase, calculating an elastic modulus of a dry rock skeleton by utilizing a dual-pore medium rock physical model; based on the elastic modulus of the dry rock skeleton, calculating the elastic modulus of the fluid saturated rock through a Gassmann equation, and further calculating to obtain the longitudinal and transverse wave velocity and the volume density of the saturated rock; and under the constraint of the sandstone phase, the porosity is inverted based on a simulated annealing algorithm. According to the method, the rock physical model suitable for the compact sandstone reservoir is constructed, and the seismic lithofacies are used as constraints to be added into rock physical inversion, so that the heterogeneity of the underground reservoir can be reasonably reflected under the seismic lithofacies constraints, the reservoir modeling precision is improved, the multiplicity of solutions of the rock physical inversion is reduced, and the reservoir physical property parameter prediction precision is improved.

The application discloses a kind of fracture-cave carbonate gas reservoir modeling methods, it is related to carbonate rock oil and gas geology and development technical field, solve the simple, lack of systematicness of existing fracture-cave modeling method;The simulation result of cave and fracture is not reasonable enough, and then it is difficult to be applied to guide gas field exploration and development and the like problem, the method of the present application establishes fine structure model comprehensively stratum correlation and seismic interpretation result.On the basis of the fine structure model, matrix attribute model, fracture model and cave model are established, and finally a dual medium model is constructed through the matrix attribute model, the fracture model and the cave model.The method of the present application establishes a fine geological model to depict the distribution space of the preferred reservoir based on the integration of the distribution patterns of matrix, fractures and caves. By analyzing the controlling factors of fractures and caves and establishing a fracture-cave model, more accurate decision-making basis can be provided for gas field development, and the exploration and development of gas fields can be guided.

The invention belongs to the technical field of crossing of oil and gas reservoir geophysics and artificial intelligence, and particularly relates to a micro-tomography method based on a physical information graph neural network and a neural level set. The method comprises the following steps: modeling a reservoir into a graph structure; deploying a physical information neural network at each node to solve a pressure and saturation field; constructing a neural level set for the potential micro-fault edge to dynamically represent the geometry and closure of the potential micro-fault edge; calculating a fault transmission coefficient through an edge network, carrying out message transmission, and updating a node state; constructing a graph neural network; and finally, through optimizing a comprehensive loss function, synchronously inverting pressure-saturation field and micro fault parameters. According to the method, the physical information graph neural network and the neural level set are combined for the first time, dynamic production data are utilized, the resolution limitation of a traditional seismic method is broken through, real-time, high-precision and physically-credible inversion imaging of meter-scale micro-faults is achieved, and core technical support is provided for intelligent regulation and control of oil and gas fields.

A method for predicting petrophysical properties of a three-dimensional (3D) volume includes receiving input data related to the 3D volume. The method includes determining a clustering scheme for the input data based on the input data, clustering the input data based on the clustering scheme to generate a plurality of clusters, and associating the plurality of clusters with a plurality of CRTs based on the input data. The method also includes generating predicted training sets for the petrophysical properties based on the clustering of the input data, the plurality of CRTs, or a combination thereof, selecting a representative predicted training set from the predicted training sets based on the input data, generating a model based on the representative predicted training set, and predicting the petrophysical properties of the 3D volume based on the model.

The embodiment of the invention provides a modeling method and device for a three-phase fluid saturated fractured reservoir. The method comprises the steps that the equivalent bulk modulus, the equivalent shear modulus and the equivalent viscosity of oil-water mixed liquid fluid in the fractured reservoir, the jet flow action numerical value and the patch saturation action numerical value in a rock matrix and the equivalent bulk modulus of three-phase mixed fluid in the fractured reservoir are obtained; the rock physical model of the three-phase fluid saturated fractured reservoir is constructed according to the equivalent shear modulus, the equivalent viscosity and the disturbance quantity caused by the fractures. According to the method, multiple physical mechanisms of seismic waves in the propagation process of the three-phase saturated fractured reservoir are fused, the reasonability and feasibility of modeling of the three-phase saturated fractured reservoir are improved, and the purpose of constructing the rock physical model of the three-phase fluid saturated fractured reservoir is achieved.