183 results about "Geologic modelling" patented technology

The invention provides a geological modeling method for horizontal wells in ultra-low permeability tight reservoirs, which includes the following steps: (1) the well information data, single-well logging data, well point layer data and sedimentary microfacies data of the horizontal section of a horizontal well are acquired, and the reservoir stratum parameters of the horizontal section of the horizontal well are determined; (2) vertical wells are added on the horizontal section of the horizontal well to control the horizontal section structure, so that an initial structure model is obtained; (3) a reservoir facies model is created by utilizing the sedimentary microfacies data and in combination with geological knowledge and achievements; (4) the reservoir stratum parameters of the horizontal section of the horizontal well are utilized for analysis, and a reservoir property model is created; (5) the actual locus profiles, production performance and numerical simulation of the horizontal well are applied to verify the geological models, so that a three-dimensional geological model of an exploitation area of the horizontal well is obtained. The method provides a data source for the research on the characteristics of the planar distribution of sand, accurately describes the planar distribution trend and vertical facies distribution trend of a reservoir stratum, increases the precision of the prediction model, and lays a foundation for the optimization of an ultra-low permeability oil reservoir exploitation technology policy and fine injection and production adjustment.

A roadmap for a field development strategy for optimal recovery is provided in a high quality 3D geological model. This geological model combines geological attributes, pore and rock properties for an optimum 3D representation of the reservoir thousands feet beneath the surface. The model is based on the pertinent geological facies, derived from well core description and detailed studies of rock, as well as fluid and pore properties (Full Pore System) obtained from laboratory analyses of core material and well log data. These data differentiate various important pore throat and pore body regions and relationships, i.e., macroporosity and microporosity. Understanding hydrocarbon volumes in the various pore type groups and then establishing proper recovery techniques through focused laboratory studies yields a field development strategy that can significantly increase hydrocarbon recovery from a reservoir.

The invention provides a foreland basin deep buried and compressed type complex gypsum-salt rock identification and distribution prediction method. The method comprises the following steps that: according to lithological vertical change in outcrop data, drilling data and logging data, a lithological sequence caused by sedimentary environment change is reserved, and a gypsum-salt rock deformation and overlying sequence caused by tectonic compression and fault repetition is eliminated, and an original lithologic sequence is established, and an ancient landform model of a research area is recovered through the original lithologic sequence, and a current tectonic model is recovered; and three-dimensional gravity, magnetic, electric and seismic joint inversion is carried out, and lithological and lithofacies interpretation of gypsum-salt rock at the surrounding region of a borehole is carried out through electrical methods, seismic facies and density anomaly and by means of the original lithologic sequence and the current tectonic model, and therefore, a lithological sequence plane distribution rule can be determined. According to the method provided by the invention, based on foreland basin gypsum-salt rock deformation characteristics which are obtained through geologic modeling, and geophysical methods such as three-dimensional gravity, magnetic, electric and seismic methods are adopted to perform joint inversion, and therefore, the distribution characteristics of post-deformation gypsum-salt rock can be accurately determined.

The invention relates to a system for conducting computer geological modeling, simulation and analysis according to hydraulic and hydroelectric engineering geologic field exploration data, and discloses a hydraulic and hydroelectric engineering geologic three-dimensional real scene field logging and mapping system. The problem that in a traditional technology, quick data analysis cannot be achieved is solved. The hydraulic and hydroelectric engineering geologic three-dimensional real scene field logging and mapping system comprises a hardware system and a software system, wherein the hardware system comprises an aerial photographic image collecting device, a graph work station, a computer terminal and a portable land photographic image collecting device; the software system comprises a terrain scene building subsystem, a geological logging data subsystem, a geological plotting data subsystem, a three-dimensional visualization and analysis subsystem and an engineering geologic data management and exchange subsystem. According to engineering geologic filed logging requirements, the quick analysis and modeling functions are provided, and a digitized, intelligentized and three-dimensional visualized solution is provided for engineering geologic field logging operation.

The invention belongs to the technical field of oil and gas field reservoir geological analysis, in particular to a braided river sedimentary heterogeneous tight sandstone gas reservoir geological modeling method comprising the following steps: establishing a braided river reservoir internal structure model; establishing a braided river reservoir geological knowledge base; and taking the braided river reservoir internal structure model as a framework, applying the stochastic modeling method based on the target, inputting the parameters of the braided river reservoir geological knowledge base,establishing multiple implementation models and selecting the implementation model with the highest coincidence rate as the training image of multi-point geostatistical modeling, and selecting seismicattributes as the soft constraint conditions of the training image to establish multiple implementation models again and selecting the implementation model with the highest coincidence rate as the braided river sedimentary facies model. The problem of low average coincidence rate of establishing the geological model in the prior art can be solved, and the existing mine field data are fully integrated and the coincidence rate of the established geological model can be enhanced.

The invention discloses a staggered mesh wave equation forward modeling method based on actual seismic data. The method performs forward modeling by using a wavelet of actual seismic data in order to overcome a defect of poor seismic data matching in the prior art; performs constraint on a forward modeling parameter by using a high-order difference scheme and multi-source information in order to improve forward modeling precision and overcome a frequency dispersion phenomenon; tightly combines known multi-source data (such as seismic, logging, geological data and the like), optimizes a forward modeling technique process and a geologic modeling process, sets an observation system in advance in order to prevent manual observation system parameter modification in a forward modeling process and improve computational efficiency and computational precision. The method is based on actual seismic, logging, and geological data, uses a wavelet of the actual earthquake data, performs forward modeling on an actual geologic model by using a method of post-stack iterating the geologic model step by step and then after-stack forward modeling, flexibly matches seismic data of various regions, and has high computational precision and computation efficiency.

The invention discloses a parameterized three-dimensional geological modeling method and system and an information data processing terminal, and belong to the technical field of geological modeling. The method is characterized in that the parameterized three-dimensional geological modeling method comprises the following steps: 1, according to drilling data of field exploration, arranging the drilling data into a database table according to a certain data format; 2, automatically importing the sorted data into a modeling space; 3, according to a pre-programmed program, automatically forming a surface in a point-to-point manner, and generating each geological layer; 4, determining an outer boundary in a parameterized manner, creating an outer contour of the geologic model, and automaticallyshearing and combining; and 5, according to the changed drilling data points, executing the steps again, and completing parameterized updating creation of the model. By the adoption of the technical scheme, the complex geological modeling process is parameterized, the labor amount of traditional manual modeling is reduced in a computer programming algorithm mode, and geological modeling is more intelligent.

The invention relates to an engineering geology informatization work system which comprises an engineering geological data acquisition module, a database, a field process platform system, a geological information data management system, a three-dimensional geological modeling system and an engineering geology drafting system. The database is used for storing geological data acquired by the engineering geological data acquisition module. The field process platform system is used for field geological survey work and drafting of a material graph. The geological information data management system is used for the management and application of the geological data in the database. The three-dimensional geological modeling system is used for generating a geological body three-dimensional model according to the geological data acquired by the engineering geological data acquisition module. The engineering geology drafting system is used for generating a standard geological map meeting the requirements of various regulations and norms according to the geological data with a topographic map and an orthophoto map as the background. The engineering geology informatization work system provides a complete solution for engineering geological investigation work, and the functions of the informatization work system can be expanded. By the application of the system, revolutionary change can be brought to the engineering geological investigation work, and the efficiency of the engineering geological investigation work is greatly improved.

The invention relates to the technical field of geological prospecting and discloses a method for calculating secondary migration rate of crude oil driven by overpressure. The method includes: acquiring an overpressure driven fluid flowing basic equation through a continuity equation, a Darcy law, a fluid potential expression and a formation fluid physical property relation, and converting the basic equation into an oil-water two-phase flowing equation by taking capillary pressure and oil-water saturation degree into consideration; discretizing the flowing equation through a finite difference explicit format method to acquire an explicit expression; solving the explicit expression to acquire hole pressure, and calculating on the basis of the hole pressure to acquire the secondary migration rate of the crude oil driven by overpressure. The secondary migration rate of the crude oil driven by overpressure in an overpressure reservoir is calculated by combining flowing characteristics and physical property characteristics of fluid in the overpressure reservoir through geological modeling, mathematical deduction and solving, migration distance of overpressure driven oil gas and crude oil distribution range can be acquired further, and a scientific basis is provided for geological evaluation and exploration of oil gas and finding of new oil gas reserves.

The invention relates to the technical field of geological modeling, in particular to a multi-source geological data coupling modeling method based on drill holes and complex geological sections, which is characterized by comprising the following steps: S1, modeling data preparation: performing data standardization processing on modeling data to generate three-dimensional data, and performing dataconsistency processing; S2, constructing a fault surface: determining a three-dimensional space form of the fault surface, and generating a three-dimensional fault surface; S3, constructing a groundlevel: generating a ground surface according to the ground surface elevation data; sequentially constructing complete stratum surfaces of all the stratums from top to bottom according to the corresponding relation of the stratums; S4, ground level intersection processing: performing curved surface intersection processing, and segmenting a ground level according to an intersection line; after the segmentation is completed, removing surplus stratum surfaces to obtain stratum surfaces conforming to stratum distribution; and S5, constructing geologic body. According to the method, the modeling result is more consistent with the actual situation, and meanwhile, the modeling efficiency of the complex geologic body is improved.

The invention discloses a numerical simulation method for a heterogeneous formation stress field, and relates to the technical field of geology. The method comprises totally four steps: establishing a specialized geologic model, obtaining a three-dimensional spatial data body comprising formation structural configuration and lithological distribution research information, generating an ANSYS command stream file on the basis of the three-dimensional spatial data body and reading the command stream file for numerical simulation of the stress field in ANSYS software. According to the method, the three-dimensional geologic model generated by specialized geologic modeling software is read, a data structure is analyzed and matched to obtain the three-dimensional spatial data body comprising the formation structural configuration and lithological distribution research information, and the three-dimensional spatial data body is maximally utilized to generate the ANSYS command stream file and establish a mathematical model consistent with geologic knowledge in the ANSYS software by adopting the modeling concept of breaking up the whole into parts, so that the authenticity and the reliability of a simulation result are improved.

The invention relates to the field of three-dimensional geological modeling, and in particular to a mesh generation and visualization method and system based on a three-dimensional urban geological model, and the method is characterized in that the method comprises the steps: S1, mesh generation: calculating an outer bounding box of a structural model, carrying out the regular mesh generation of the outer bounding box, and generating a regular mesh regular hexahedron attribute model; S2, data storage: storing a central point coordinate value and an attribute value of each subdivided regular hexahedron unit grid in the bounding box; S3, visualization: extracting an outer contour frame of the structure model, pasting a texture picture to the contour frame model, and representing the same geologic model by adopting a plurality of grid units in combination with a multi-detail-level LOD technology; S4, efficiently positioning the grid information; and S5, grid attribute query: dynamically generating a grid according to the returned result set and submitting the grid to the user, wherein the grid attribute query comprises multiple query modes. According to the method, the storage mode ofthe three-dimensional urban geological model is optimized, and visualization of large data volume is supported.

The invention relates to a three-dimensional geological rapid modeling method for long and large strip-shaped linear engineering. The method comprises the following steps of acquiring basic data; dividing a modeling unit; drawing an exploration profile sketch; modeling a wireframe model; modeling a geological interface; geologic body modeling; modeling a special geologic body; geologic body post-treatment; three-dimensional geologic model assembly. According to the method, curve element data of line lines are deeply analyzed, so rapid and accurate partitioning of a geological modeling area isrealized; a shared profile is preset in advance to ensure the connection of stratums at joints of the geologic body blocks; for a geological body with a complex special structure, a flexible and rapidinteractive modeling mode is adopted, so that the modeling efficiency is greatly improved, and a problem that the geological body cannot be created manually is solved; a solution is provided for thecollaborative problem of geologic modeling carried out by multiple persons, large-scale geologic modeling work can be carried out according to the method, working efficiency is improved, and the modeling quality is guaranteed.

The invention discloses a compact sandstone reservoir refined description method and system; the method comprises the following steps: using known geology rules and drilling and logging data as constraints according to post-stack three dimensional earthquake data, and carrying out wave impedance inversion so as to obtain a wave impedance inversion data body; determining lithology division standards of the wave impedance inversion data body according to logging lithology and wave impedance inversion data body intersections; using the geologic body identification technology to automatically identify the geologic body according to deposition microfacies and the lithology division standards; using a high resolution sequence stratum division result as a hierarchy interface so as to analyze thegeologic body configurations according to the geologic body, thus obtaining reservoir configuration parameters; using the geologic body as constraints and combining the reservoir configuration parameters so as to carry out three dimensional geology modeling, thus finishing reservoir refined descriptions.

The invention provides a fluvial facies log facies rapid interpretation method and a fluvial facies three-dimensional sedimentary facies model deterministic modeling method. The fluvial facies three-dimensional sedimentary facies model deterministic modeling method comprises the steps of based on single layer interpretation data of each well, firstly performing log facies identification by using thickness and oil bearing property data and then performing log facies rapid correction based on the shape, amplitude and top/bottom contact relations of a natural gamma or natural potential curve of each single layer; by using the synthetic seismogram calibration technology, determining the seismic horizon corresponding to each single layer and extracting the corresponding root mean square attributes in a certain time window of the seismic horizons; by using the obtained log facies of each single layer and the corresponding root mean square attribute of each single layer, drawing a fluvial facies sedimentary facies map; inputting the sedimentary facies boundaries of fluvial facies river channels in the digital sedimentary facies map into geologic modeling software and establishing a three-dimensional sedimentary facies model by directly using the assignment method. The log facies interpretation is more efficient and rapid and sedimentary facies maps are more accurate; nondeterminacy of sedimentary facies models caused by random modeling is prevented; sedimentary facies models established by using the method can be used for constraining three-dimensional geologic model modeling such as porosity and permeability.

The invention discloses a sequential collaborative simulation geological modeling method based on phase control. The method includes the following steps: obtaining original data, constructing a phasemodel and setting parameters, performing interpolation on well data and horizon data, constructing a variation function of a master variable and a secondary variable, adopting the least square methodto calculate contribution proportions of sedimentary facies Kriging estimations to to-be-estimated points, generating a random path on each of simulation planes, and carrying out collaborative simulation on the basis of the random paths on the simulation planes. Different sedimentary facies belonging to points within a to-be-simulated neighborhood are found and weights are reasonably distributed to Kriging estimations, so that during a whole random simulation process, control over correlation (variation) can be carried out through a variation function, and also regional control can be carriedout through sedimentary facies which belong to discrete attributes. Therefore, constraints over the to-be-estimated points can be realized from the above two aspects, and a simulation result can reflect actual geological situations more accurately.

The invention belongs to the technical field of geological modeling, and particularly relates to a three-dimensional geological model modeling method. The three-dimensional geologic model modeling method comprises the following steps: acquiring exploration data of a plurality of exploration holes, extracting drilling data, performing data interpolation according to the drilling data to obtain interpolation data, and integrating the interpolation data and the drilling data into modeling data; generating point cloud data through the modeling data, and generating a stratum curved surface throughthe point cloud data; searching a convex envelope curve by adopting a convex hull algorithm, and cutting the stratum curved surface according to the convex envelope curve to obtain a cut stratum curved surface; and generating a stratum entity through the stratum curved surface, extracting soil layer data from the exploration data, taking the soil layer data as project parameters of the stratum entity, and generating a three-dimensional geological model through the stratum entity. The stratum curved surface generated by the method is smoother and is completely controlled by parameters, and themethod has a good effect on stratum simulation.

The invention discloses an intelligent three-dimensional geological modeling method based on drilling data. Firstly, drilling group data are integrated, an adjacency relation matrix of a drilling group is determined according to a Voronoi algorithm, drilling geological disclosure information is converted into character string data, and a character string similarity algorithm is applied to identifya common subsequence of adjacent drilling character strings. And determining the growth path of the plane domain of the borehole group according to the Voronoi diagram, and solving the distribution form of each geosome in the projection area of the geodetic plane; introducing a new control point to the non-continuous through body in the adjacent drilling interval, connecting the continuous through geologic body and the control point, creating geological sections of the adjacent drilling interval, converting all the geological sections into a three-dimensional space to generate a three-dimensional geological skeleton network, and finally assembling to form a three-dimensional geological model. According to the method, automatic three-dimensional geological modeling can be directly carriedout on the complex geologic body based on the drilling data, the three-dimensional topological relation of the drilling group is comprehensively considered, the data utilization rate and the model precision are improved, and the method can be applied to BIM development and smart city construction.

The invention provides a method for geologic modeling with horizontal well data during drilling. The method includes the steps that according to vertical well data, a tectonic framework is established and locally strained and corrected, and a tectonic model is established; by the utilization of a target work area core hole logging data and core indoor experiment analysis results, a relation curve formula of shale content and a well logging GR value is fitted, a relation formula of porosity and shale content is fitted, and a relation formula of permeability and porosity is fitted; porosity data and permeability data needed for three-dimensional geologic modeling are obtained through calculation; in combination with a resistance curve while drilling, abnormal data, not according with corresponding geological recognition, in the porosity data and the permeability data is recognized and corrected; attribute modeling is conducted, and a precise three-dimensional geological mode of a target work area is established. According to the method for geologic modeling with the horizontal well data during drilling, hierarchical data and attribute data involved in modeling are encrypted, uncertainty caused by too large vertical well distance is compensated for, and the precision of three-dimensional geological modeling is improved.

The invention belongs to the technical field of three-dimensional geologic modeling, and discloses a geologic structure three-dimensional modeling method and system based on a fault generation time sequence, and the method comprises the steps: calculating a bounding box of a fault surface model and a geologic model, and judging a geologic model data object; carrying out bounding box collision detection on the fault surface model and the geologic model, and determining the geologic model with intersected fault surfaces; taking one geologic model from the geologic models with the intersected fault planes to perform cutting operation with the fault planes, and calculating intersection points to obtain cutting intersection lines; subdividing triangles on two sides of a fault surface cutting intersection line, and determining a fault hanging wall boundary and a fault footwall boundary; reading fault attribute information, and moving the boundaries of the hanging wall and the footwall; judging whether new revealed data exists or not; dynamically optimizing the cut geological model; and judging whether a geologic model intersected with the fault surface exists in the geologic models intersected with the fault surface or not. According to the method, the three-dimensional model is dynamically optimized by fully utilizing the revealed data, so that the geological model is matched with the revealed data, and accurate modeling of tectonic geology is achieved.

The invention provides a fractured-vuggy carbonate reservoir corrosion hole hierarchical classification modeling method, which comprises the steps of determining a corrosion hole seismic facies levelaccording to a corrosion hole seismic prediction range; dividing the cause types of the corrosion holes; integrating seismic facies classification and cause classification methods of the corrosion holes, and determining three-dimensional geological models of different types of corrosion holes through hierarchical classification; and fusing different types of corrosion holes to form a corrosion hole three-dimensional distribution model. According to the fractured-vuggy carbonate reservoir corrosion hole hierarchical classification modeling method, the fractured-vuggy carbonate reservoir corrosion hole modeling precision is effectively improved, and the fractured-vuggy carbonate reservoir geologic modeling method is perfected.

A roadmap for a field development strategy for optimal recovery is provided in a high quality 3D geological model. This geological model combines geological attributes, pore and rock properties for an optimum 3D representation of the reservoir thousands feet beneath the surface. The model is based on the pertinent geological facies, derived from well core description and detailed studies of rock, as well as fluid and pore properties (Full Pore System) obtained from laboratory analyses of core material and well log data. These data differentiate various important pore throat and pore body regions and relationships, i.e., macroporosity and microporosity. Understanding hydrocarbon volumes in the various pore type groups and then establishing proper recovery techniques through focused laboratory studies yields a field development strategy that can significantly increase hydrocarbon recovery from a reservoir.

An embodiment of the invention provides a track traffic geotechnical engineering three-dimensional intelligent information system which comprises an engineering geological modeling subsystem, an engineering geological visualization subsystem and an engineering geological attribute subsystem. The engineering geological modeling subsystem is used for recording, sorting and storing engineering data information, stratum data information and drilling data information, which are involved in track traffic geotechnical engineering, according to unified formats and codes; the engineering geological visualization subsystem is used for carrying out stratification analysis processing according to logic relations between strata and the stratum data information, and generating computer geometric mesh models of stratum structures; the engineering geological attribute subsystem is used for forming stereoscopic stratum models according to the drilling data information and the computer geometric mesh models of the stratum structures. The track traffic geotechnical engineering three-dimensional intelligent information system has the advantage that the integrity and the utilization efficiency of datacan be improved by the aid of the track traffic geotechnical engineering three-dimensional intelligent information system.