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46 results about "Tectonic model" patented technology
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Method For Geophysical Imaging
ActiveUS20110264421A1Maintain consistencyComputation using non-denominational number representationElectric/magnetic detectionHydrogen compoundsGeophysical imaging
Method for transforming electromagnetic survey data acquired from a subsurface region to a subsurface resistivity model indicative of hydrocarbon accumulations or lack thereof. In one embodiment, data are selected for two or more non-zero frequencies (100), and a structural model of the region is developed based on available geological or geophysical information. An initial resistivity model of the region is developed based on the structural model (101), and the selected data are inverted to update the resistivity model (106) by iterative forward modeling (103) and minimizing an objective function (105) including a term measuring mismatch between model synthesized data and measured survey data, and another term being a diffusive regularization term that smoothes the resistivity model (104). The regularization term can involve a structure or geology constraint, such as an anisotropic resistivity symmetry axis or a structure axis, determined from the a priori information (102).
Owner:EXXONMOBIL UPSTREAM RES CO
Foreland basin deep buried and compressed type complex gypsum-salt rock identification and distribution prediction method
InactiveCN105510993AImprove forecast accuracyAdd deformation analysisGeological measurementsLithologyOutcrop
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.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Reservoir crack modeling method and system
Disclosed is a reservoir crack modeling method and system. The method comprises steps of: on the basis of a stratum fault model, a stratum tectonic model, and core and / or logging information, dividing multiple layers of single sand body and establishing a 3D distribution model for each layer of single sand body; on the basis of a stratum fracture characteristic and a crack parameter distribution characteristic, acquiring each group of crack planar density distribution intensity of each layer of single sand body; on the basis of the 3D distribution model of each layer of single sand body and the each group of crack planar density distribution intensity of each layer of single sand body and in combination with a crack control factor, establishing each group of crack 3D density model of each layer of single sand body; and on the basis of the crack parameter distribution characteristic, the crack control factor, and the each group of crack 3D density model of each layer of single sand body, acquiring each group of crack 3D discrete model of each layer of single sand body so as to acquire all groups of crack 3D network models of all single sand bodies.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
High-precision tectonic stress field simulation method applicable to turbidite sand low-permeability reservoirs
InactiveCN103838936AHigh precisionSolve rationalitySpecial data processing applicationsStress distributionTectonic stress
The invention provides a high-precision tectonic stress field simulation method applicable to turbidite sand low-permeability reservoirs and belongs to the field of tectonic stress field simulation technologies. The high-precision tectonic stress field simulation method aims at solving the problems that the high-precision simulation can not be carried out on the turbidite sand low-permeability reservoirs to direct well network deployment in the oilfield development process and improve the development effect of the low-permeability reservoirs through an existing tectonic stress field simulation method. The method includes the first step of establishing a turbidite sand reservoir tectonic model and a turbidite sand reservoir interval velocity model in a PETREL system, the second step of obtaining a three-dimensional rock mechanics parameter model through calculation on the turbidite sand reservoir interval velocity model, the third step of converting the turbidite sand reservoir tectonic model in the PETREL system to a turbidite sand reservoir geometric model in an ANSYS system, the fourth step of carrying out independent mesh subdivision on a stratum and a geologic fault; the fifth step of loading rock mechanics parameters through a range scanning mode, and the sixth step of carrying out simulation on a tectonic stress field to obtain stress distribution states of any point in the turbidite sand low-permeability reservoirs. The method is used for simulating the tectonic stress field in the turbidite sand low-permeability reservoirs.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Method for geologic modeling with horizontal well data during drilling
InactiveCN106354893AHigh precisionMake up for uncertaintySpecial data processing applicationsPorosityElectrical resistance and conductance
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.
Owner:CHINA PETROLEUM & CHEM CORP +1
Analysis method of geological tectonic evolution and deformation process
The invention provides an analysis method of a geological tectonic evolution and deformation process. The method of the invention includes the following steps that: the current formation information and geological characteristics of a target area are acquired; a tectonic evolution process and historical formation information are obtained through inversion according to the current formation information and geological characteristics; an initial discrete element model is generated according to the historical formation information of the target area, wherein the initial discrete element model is composed of randomly-generated particles of different radiuses; tectonic deformation is performed on the initial discrete element model according to the tectonic evolution process, so that a tectonic model can be obtained; whether the geological characteristics of the tectonic model and the geological characteristics of the current formation information satisfy preset similarity is judged; and if the geological characteristics of the tectonic model and the geological characteristics of the current formation information do not satisfy the preset similarity, the material parameters of the particles of various historical formations in the initial discrete element model are adjusted, tectonic deformation is performed on the parameter-adjusted initial discrete element model until the geological characteristics of a tectonic model which is obtained through the deformation of the parameter-adjusted initial discrete element model and the geological characteristics of the current formation information satisfy the preset similarity.
Owner:PETROCHINA CO LTD
Method and device for simulating tectonic stress field
ActiveCN106815412AAdapt to complexityAccurately determineDesign optimisation/simulationSpecial data processing applicationsTectonic stressDensity curve
The embodiment of the invention provides a method and a device for simulating a tectonic stress field. The method comprises the following steps: utilizing tectonic explaining result information in a target work area to establish a tectonic model; confirming interior physical property parameters by utilizing material attribute information acquired from a rock mechanical test for seismic inversion result data and an objective interval rock sample in the target work area; performing tectonic evolutionary analysis treatment on the tectonic model in combination with geological background information, thereby acquiring bottom margin displacement information; confirming static rock pressure according to objective interval burial depth and logging density curve and confirming an inferior tectonic force in a preset period at a boundary of a target work area on the basis of the geological background information; respectively utilizing the static rock pressure, the inferior tectonic force in the preset period and the bottom margin displacement information as the constraint conditions of the top boundary, the peripheral boundary and the bottom boundary of the tectonic model and performing finite element modeling and calculating treatment in combination with an interior physical property parameter, thereby acquiring the tectonic stress field in the target work area. The technical scheme provided by the embodiment of the invention is utilized to more accurately confirm the tectonic stress field in the work area.
Owner:PETROCHINA CO LTD
Clastic rock fault ancient closure three-dimensional numerical simulation recovery method and device
PendingCN114690243ANo experimental costAdvanced use effectSeismic signal processingThree-dimensional spaceGeologic modelling
The invention relates to a clastic rock fault paleoclosure three-dimensional numerical simulation recovery method and a clastic rock fault paleoclosure three-dimensional numerical simulation recovery device. Manual intervention and iterative correction of numerical simulation of fault paleo-closure through steps of establishing virtual well, establishing current structure model, establishing current lithologic model, establishing current shale content model, numerical simulation of fault current closure, establishing paleo-structure model, establishing paleo-lithologic model, establishing paleo-shale content model, and numerical simulation of fault paleo-closure in sequence and step 2, based on geological modeling software, carrying out inversion by taking the current sealing evaluation result of the fault as a starting point for recovering the fault sealing evolution history. According to the method, the two-dimensional fault paleo-closure evaluation result can be expanded to three-dimensional space distribution, the method can be suitable for a well-free and few-well area, the experiment cost is not needed, and the use effect is more advanced and reliable.
Owner:CNOOC TIANJIN BRANCH +1
Saturation modeling method based on oil-containing boundary and oil-water transition zone constraint
ActiveCN111274694AReduce flow rateReduce Geological Reserve ErrorsDesign optimisation/simulationConstraint-based CADThermodynamicsSoil science
The invention discloses a saturation modeling method based on oil-containing boundary and oil-water transition zone constraint. The method comprises the following steps: (1) establishing a target workarea construction model and a sedimentary microfacies model; (2) establishing an oil-bearing boundary model of a target work area according to a geological oil reservoir research result; (3) establishing an oil-water interface and a height model above the oil-water interface according to an oil-water interpretation result of the logging curve; (4) generating a height logging curve above an oil-water interface, and establishing a cross plot with a water saturation logging interpretation result; (5) establishing a nonlinear fitting function according to the cross plot, and establishing a watersaturation model by utilizing an attribute calculation function; and (6) performing interactive calculation on the model and an oil-containing boundary model to obtain a final oil saturation model ofthe work area. According to the method, the oil saturation model conforming to the underground oil-water distribution rule is established, the repeatability is high, the operability is high, and laterhistorical fitting, scheme prediction and remaining oil research are facilitated.
Owner:PETROCHINA CO LTD
Fault interpretation method for fault block oil reservoir and structural trap identification method
InactiveCN111474583AImprove accuracyImprove rationalitySeismic signal processingAlgorithmStructural trap
The invention relates to a fault interpretation method for a fault block oil reservoir and a structural trap identification method. The method comprises steps of selecting one structural style to determine a structural model corresponding to the structural style according to the structural style possibly existing in a research area; obtaining original fault interpretation according to the well breakpoint information of the research area; denoising the seismic data information of the research area, and obtaining a corresponding fault description result by using the denoised seismic data information; combining the fault description result with the original fault interpretation to obtain a new fault interpretation, judging whether the new fault interpretation conforms to the structural modelor not, if yes, taking the new fault interpretation as a final fault interpretation; otherwise, re-selecting a construction style to determine the model till the new fault interpretation conforms to the construction model. The method is advantaged in that multiplicity and uncertainty caused by structural interpretation purely depending on seismic data are avoided, and accuracy of fault interpretation is improved.
Owner:CHINA PETROLEUM & CHEM CORP +1
Modeling method of Waterbomb paper folding structure with generalized cylinder geometrical characteristics
The invention discloses a Waterbomb origami structure modeling method with generalized cylinder geometrical characteristics, which comprises the following steps of: S1, designing a two-dimensional profile curve through an interactive model construction method, and performing scanning along a y axis by utilizing the curve to generate a three-dimensional target curved surface with the generalized cylinder geometrical characteristics; s2, paving a Waterbody base on the curved surface of the three-dimensional target to generate a basic grid model; s3, using a numerical optimization algorithm to minimize the flattened foldable residual amount of the basic grid model; s4, adjusting the expanded graph of the optimized model, reducing the flattened folding residual, and ensuring the scale independence of the folding structure; and S5, simulating rigid folding motion controlled by a single variable along the y axis. According to the method, the mirror symmetry and the periodic repeatability of the Waterbomb origami structure are considered, and the modeling efficiency and the numerical optimization efficiency are improved. The method may be used to design folded structures for various engineering purposes, such as foldable blindages, tubular foldable structures, metamaterials, and the like.
Owner:JIANGSU UNIV
Method for quantifying classification reservoir space distribution characteristics
PendingCN111007568AReveal the law of changeEasy to formulateSeismic signal processingEvaluation resultReservoir type
The invention relates to a method for quantifying classification reservoir space distribution characteristics. The method comprises the following steps: 1) determining parameter items for classification reservoir division in a target area and establishing a parameter standard; 2) evaluating a well-drilled single-well small-layer classification reservoir according to the parameter standard to obtain evaluation result data; 3) loading the result data into a three-dimensional structure model of the target area, and discretizing the result data; 4) performing correlation analysis on the discretized data in the three-dimensional construction model, and determining quantitative simulation parameters of each type of reservoir of each small layer; and 5) according to the quantitative simulation parameters, respectively simulating the distribution characteristics of different reservoir types of each small layer in a three-dimensional space by using a geostatistical simulation algorithm. According to the method, the change rules of the classification reservoir in the transverse direction and the longitudinal direction between wells can be well revealed, the distribution characteristics of the classification reservoir in the three-dimensional space are visually displayed, formulation of a development scheme and adjustment and deployment of an injection-production well pattern are facilitated, and the development effect of an oil reservoir is improved.
Owner:CHINA PETROLEUM & CHEM CORP +1
Ore deposit prediction method based on digital geologic model
PendingCN112380674AImprove accuracyImprove visibilityDesign optimisation/simulationProbabilistic CADMetallogenyAlgorithm
The invention belongs to the technical field of metallogenic prediction, and particularly relates to an ore deposit prediction method based on a digital geologic model, which comprises the following steps: 1, establishing the digital geologic model of a research area as required; establishing a digital geologic model according to the actual situation of the research area, wherein the digital geologic model comprises a construction model, an ore model and a rock model; 2, establishing a block model and each prediction element block model according to the digital geologic model; 3, calculating aposterior probability value and an information amount value of the evidence weight method, combining the posterior probability value and the information amount value of the evidence weight method, analyzing, and solving a favorable interval; and step 4, screening out a favorable interval according to the posterior probability value and the information amount value given to the block model, and delineating a target area by combining geological cognition on the next basis.
Owner:BEIJING RES INST OF URANIUM GEOLOGY
Tectonic altitude determination method based on tectonic model in drilling layering design
ActiveCN111999768ABurial depth is accurateReduce drilling riskSeismic signal processingWell drillingData interpretation
The invention discloses a tectonic altitude determination method based on a tectonic model in drilling layering design. The method comprises the following steps of: 1) determining a stratum frameworkon the basis of high-precision three-dimensional seismic data interpretation, establishing a well connecting time tectonic model of a target area and an existing well area, and directly obtaining wellpassing time values of the known well area and the target area; 2) determining the comprehensive average speed of the existing well area, and calculating the stratum speed; 3) according to the surrounding drilling condition, fitting the speed change trend of different stratums along with the increase of the burial depth; and (4) correspondingly endowing the interval velocity of the target area stratum according to the known well interval velocity and the structure model, correcting the interval velocity of the target area stratum according to the velocity change trend in the step (3), and finally calculating the required structure altitude in the drilling design stratification according to the well passing time value and the interval velocity. The stratum burial depth calculated through the method is more accurate, and the drilling risk caused by design errors is greatly reduced.
Owner:CHINA PETROLEUM & CHEM CORP +1
A fabricated building design device and method
ActiveCN109948241ARealize simulation analysisEasy to detectSpecial data processing applicationsThree dimensional modelPoint release
The invention discloses a fabricated building design device and method. The system comprises a drawing path acquisition module, the input of the painting path acquisition module is connected with outputs of a painting brush path acquisition module and an eraser path acquisition module; the output of the painting path acquisition module is connected with the first input of a central processing unit; the first output of the central processing unit is connected with the input of a three-dimensional model generation module; the second output of the central processing unit is connected with the input of a hard spot file reading module; the output of the hard spot file reading module is connected with the second input of the central processing unit; the third output of the central processing unit is connected with the input of a hard point building construction model building module, the fourth output of the central processing unit is connected with the input of a hard point release module,and the fifth output of the central processing unit is connected with the input of the building component point line model building module. The method has the characteristics of convenience and rapidness; and simulation analysis and detection of the performance of the building are realized while the design is carried out, and the fusion of the building design and the performance design is realized.
Owner:XIJING UNIV
High-precision speed modeling method under fault control and processing terminal
ActiveCN111257969AHigh geological consistencyAccurately characterize changesSeismologyGeomodellingAlgorithmTomography
The invention relates to a high-precision velocity modeling method under fault control and a processing terminal. The method comprises the following steps: 1, establishing a depth domain initial interval velocity model according to seismic data; 2, constructing a geological grid according to a fault grid, a fault block and a horizon grid to establish a construction model; 3, picking up the residual time difference of a common imaging point gather; 4, carrying out at least more than two times of updating iteration processing on a depth domain initial interval velocity model by adopting a tomography inversion method constrained by a construction model; 5, performing pre-stack depth migration calculation to obtain a pre-stack depth migration profile and a common imaging point gather; and 6, repeating the steps 2-5 until the depth domain interval velocity model after optimization iteration meets the imaging geological requirements, and performing pre-stack depth migration body deviation according to the final depth domain interval velocity model to complete velocity modeling. According to the method and the processing terminal, the imaging precision and the precision of the velocity model are improved, and the exploration risk is effectively reduced.
Owner:GUANGZHOU MARINE GEOLOGICAL SURVEY +1
Fault velocity modeling method for eliminating well-to-seismic closure error and processing terminal
The invention relates to a fault velocity modeling method for eliminating well-to-seismic closure error and a processing terminal. The method comprises the following steps: 1, establishing a depth domain initial interval velocity model according to seismic data; 2, establishing a construction model; 3, picking up the residual time difference of the common imaging point gather; 4, updating and iterating the depth domain initial interval velocity model; 5, performing pre-stack depth migration calculation to obtain a pre-stack depth migration profile and a pre-stack depth migration common imagingpoint gather; 6, establishing a structural model containing well information and well stratification through association of the well marks and the layers; 7, maintaining tomography during travel; 8,performing pre-stack depth migration calculation on the updated and iterated interval velocity model again; and 9, repeating depth domain interval velocity model optimization iteration to obtain a final imaging result profile. The method improves the imaging precision and the precision of a speed model, and effectively reduces the exploration risk.
Owner:GUANGZHOU MARINE GEOLOGICAL SURVEY +1
Method for helping explanation of seismic document
ActiveCN110764142AResolve identifiabilitySolve problems that are relatively difficult to judgeSeismic signal processingGeological sectionLandform
The invention discloses a method for helping explain seismic document. The method comprises the steps of (1) building a geological section on a geological section measurement line needed to be explained, and obtaining drawing data of the geological section; and (2) converting a geological section form line onto the geological section to form a seismic geological section form line according to a replacement speed of seismic document processing and coordinate and altitude data of each sampling point on a processing reference surface and the geological section form line, converting an apparent dip angle of a stratum and fault interface on the geological section to a time dip angle on the seismic geological section, downwards extending a length value along a straight line according to a position of a boundary point of the stratum and fault interface on the seismic geological section form line and according to the time dip angle and an inclination direction, implementing artificial explanation on a downward extension line on the seismic section, drawing positions and faults of a seismic geological structure model, and forming the seismic geological section to help explain the seismic document. By the method, the seismic document of a mountain land can be accurately and effectively explained.
Owner:SOUTHWEST PETROLEUM UNIV +1
Method for constructing theoretical three-dimensional structure model based on wireframe model
ActiveCN113689557AQuickly understand the spatial distributionFast modeling3D modellingAlgorithmTheoretical computer science
The invention discloses a method for constructing a theoretical three-dimensional structure model based on a wireframe model. The method comprises the following steps: S1, reasoning from a structure sequence to obtain a structure element and a semantic-level topological relation; S2, carrying out data preprocessing; S3, forming a work area boundary skeleton according to a model boundary line in combination with the attribute of the geological surface corresponding to the surface wireframe model; S4, determining the up-down sequence of the horizon surface according to the adjacency relation of the geological blocks; S5, according to the adjacency relation between the fault plane and the horizon plane, determining the fault plane sequence, and determining the sub-plane sequence of the horizon plane; and S6, assigning coordinates to the points on the fault surface, and updating coordinates of other points on the horizon surface to obtain a whole model framework. A wireframe model method is adopted, and construction cognition knowledge, including construction elements and a semantic-level topological relation, recognized by geological experts from a construction sequence is visualized in a visual and simplified mode, so that people can rapidly know the spatial distribution condition of the geological structure, a theoretical three-dimensional construction model can be rapidly formed, and the modeling speed is increased.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Construction Method of 3D Conceptual Model of Trap and Reservoir
The invention proposes a method for constructing a three-dimensional conceptual model of traps and reservoirs, constructing fault lines, assigning elevation values to fault lines, and using fault lines to create fault planes, converting fault planes into faults in corresponding models; creating fault-free According to the fault throws of different faults, the corresponding structural planes are constructed. According to the faults, the structural planes are divided into the structural planes of each fault block. The sandstone top surfaces of different fault blocks are combined into one structural plane. Layer top structural map; set sandstone pinch-out area, construct sandstone isopach map, use sandstone top surface and sandstone isopach map to construct sandstone bottom structural surface; use caprock top surface, sandstone top surface and sandstone bottom surface to construct three-dimensional trap structure The three-dimensional lithological attributes are constructed in the model; on the basis of the three-dimensional trap structure model, the oil-water interface is set, and the corresponding lithological attributes and fluid attributes are created. The above method can quickly and accurately establish three-dimensional trap and reservoir models.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Depicting method for constraining small-scale sedimentary microfacies by using large-scale seismic data
InactiveCN111665564AImprove explorationIncrease success rateSeismic signal processingWell drillingSeismic attribute
The invention relates to a depicting method for constraining a small-scale drilling sedimentary microfacies by using large-scale seismic data. The depicting method comprises the following steps: 1, establishing a construction model of a work area; 2, resampling seismic data into a structural model, and establishing a grid model of the seismic data; 3, acquiring seismic data of each small layer according to a network model; 4, establishing a fitting function model according to the seismic data of each small layer; 5, thinning the seismic attribute points; and 6, according to the step 4 and thestep 5, carrying out fine depiction of the sedimentary microfacies. According to the method, the large-scale seismic data is small-scale and is enabled to be in one-to-one correspondence with small-scale drilling wells in the longitudinal direction, the distribution of the sedimentary microfacies is truly described by using the seismic data, and the description precision of the sedimentary microfacies is greatly improved. By application of the method, mutual combination of well earthquakes under the same scale is realized, and earthquake quantitative constraint geology is truly realized.
Owner:CHINA PETROLEUM & CHEM CORP +1
Identification and distribution prediction method of deep-buried and extruded complex gypsum-salt rock formations in foreland basins
InactiveCN105510993BImprove forecast accuracyAdd deformation analysisGeological measurementsLithologyOutcrop
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
A Modeling Method for Complex Fault Block Structure
ActiveCN112327365BReasonable coordinationSmooth connectionSeismic signal processingSeismology for water-loggingSuperimpositionDepth conversion
The invention relates to the technical field of fault block oil and gas field exploration and development, in particular to a complex fault block structure modeling method. The method includes the establishment of velocity model and timely depth conversion; fine characterization of faults in complex occurrence and shape; determining the intersection and truncation relationship between two adjacent faults; Intersection relationship processing between faults and layers; fine adjustment of well-seismic combined structural horizons; processing of complex fault intersection relationships; superimposition and inversion processing; establishment of oil layer group-level structural model; Consistent treatment of inheritance relationship; establishment of unit-level structural models according to oil reservoir groups, and establishment of overall structural models by using the simulation results as constraints. The modeling method provided by the present invention utilizes wells to control the exact positions of faults and structures, utilizes earthquakes to determine the structure form and trend, and reasonably coordinates the relationship among wells, faults and structural layers.
Owner:DAQING OILFIELD CO LTD +1
A Fusion Geological Structure Modeling Method Based on Semantic Description
ActiveCN109035398BSolving the problem of missing geological meaning3D modellingAlgorithmTheoretical computer science
The invention discloses a fusion geological structure modeling method based on semantic description. In order to solve the problem of lack of geological meaning in the traditional three-dimensional geological structure modeling process, the invention proposes a semantic description of the structure model, which is obtained by geological workers according to the interpretation data A preliminary semantic description, interpreting the data as the basic semantics as a constraint to generate a preliminary structural model; then proposes an extraction algorithm for the semantic network of the corresponding structural model, and with the assistance of the preliminary model, the semantics are edited by geologists to extract more Meticulous semantic description, the extracted semantic description constrains the structural topology of the model in the next traversal; through cyclic traversal until the complete structural framework model is obtained; finally, a fusion geological structure modeling method based on semantic description is proposed, according to the complete structural framework model Restructure the surface.
Owner:成都爱为贝思科技有限公司
Three-dimensional flow cell model building method, device and equipment
ActiveCN109783944BEffective regulationIncrease productivityDesign optimisation/simulationPermeability/surface area analysisPorosityFlow cell
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Development later-stage complex fault block fine stratigraphic comparison method based on well-to-seismic alternation
ActiveCN114594518AAccurate comparisonClear distribution rulesSeismic signal processingSeismology for water-loggingSeismic attributeFault block
The invention relates to a complex fault block fine stratigraphic comparison method in the later period of oil reservoir development, in particular to a well-to-seismic alternation-based complex fault block fine stratigraphic comparison method in the later period of development. The method comprises the steps of establishing a preliminary construction model; performing stratum preliminary comparison by means of regional and local marks; well seismic fine horizon calibration is carried out, all-region horizon tracking is carried out, seismic attributes are utilized to guide identification and description of low-order faults, and a fine structure model is established; well-seismic combination is carried out, well-seismic alternate fine stratigraphic comparison is carried out, and well-seismic contradiction is solved; carrying out whole-region fine closing interpretation, and drawing a structural map; and drawing a small-layer plane graph, checking stratigraphic comparison data, and if problems exist, adjusting layering or structure to solve oil-water development contradictions. The method provided by the invention solves the problems of difficult well comparison and serious well-to-seismic contradiction of a complex fault block area with high sand-to-ground ratio and no marker bed, more finely and accurately divides the stratum, and clarifies the distribution rule of the remaining oil of the complex fault block.
Owner:CHINA PETROLEUM & CHEM CORP +1
Complex fault block structure modeling method
ActiveCN112327365ASmooth connectionReasonable coordinationSeismic signal processingSeismology for water-loggingClassical mechanicsStructural engineering
The invention relates to the technical field of fault block oil and gas field exploration and development, in particular to a complex fault block structure modeling method. The method comprises the following steps of: establishing a speed model and performing time-depth conversion; carrying out fault fine depiction on complex occurrence and form; determining an intersection and cutting relation between two adjacent faults; processing the intersection relation between the fault and the stratum of a fault dense area; processing the intersection relation between the reverse fault and the stratum;finely adjusting the position of a well-to-earthquake combined structure; processing the complex fault intersection relation; carrying out overlapping inversion processing; establishing an oil layergroup level construction model; establishing a unit-level construction model; carrying out consistency processing on the upper and lower inheritance relationship; and respectively establishing unit-level construction models according to the oil layer groups, and establishing an overall construction model by taking simulation results as constraint conditions. According to the modeling method provided by the invention, the fault and the accurate position of the structure are controlled by a well, and the structure form and trend are determined by earthquake; and the relationship among the well,fault and structural layer is reasonably coordinated.
Owner:DAQING OILFIELD CO LTD +1
High-precision tectonic stress field simulation method for turbidite sand low-permeability reservoirs
InactiveCN103838936BHigh precisionImprove development efficiencySpecial data processing applicationsStress distributionNetwork deployment
The invention provides a high-precision tectonic stress field simulation method applicable to turbidite sand low-permeability reservoirs and belongs to the field of tectonic stress field simulation technologies. The high-precision tectonic stress field simulation method aims at solving the problems that the high-precision simulation can not be carried out on the turbidite sand low-permeability reservoirs to direct well network deployment in the oilfield development process and improve the development effect of the low-permeability reservoirs through an existing tectonic stress field simulation method. The method includes the first step of establishing a turbidite sand reservoir tectonic model and a turbidite sand reservoir interval velocity model in a PETREL system, the second step of obtaining a three-dimensional rock mechanics parameter model through calculation on the turbidite sand reservoir interval velocity model, the third step of converting the turbidite sand reservoir tectonic model in the PETREL system to a turbidite sand reservoir geometric model in an ANSYS system, the fourth step of carrying out independent mesh subdivision on a stratum and a geologic fault; the fifth step of loading rock mechanics parameters through a range scanning mode, and the sixth step of carrying out simulation on a tectonic stress field to obtain stress distribution states of any point in the turbidite sand low-permeability reservoirs. The method is used for simulating the tectonic stress field in the turbidite sand low-permeability reservoirs.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
A METHOD FOR ANALYSIS OF GEOLOGICAL STRUCTURE EVOLUTION AND DEFORMATION PROCESS
The invention provides an analysis method of a geological tectonic evolution and deformation process. The method of the invention includes the following steps that: the current formation information and geological characteristics of a target area are acquired; a tectonic evolution process and historical formation information are obtained through inversion according to the current formation information and geological characteristics; an initial discrete element model is generated according to the historical formation information of the target area, wherein the initial discrete element model is composed of randomly-generated particles of different radiuses; tectonic deformation is performed on the initial discrete element model according to the tectonic evolution process, so that a tectonic model can be obtained; whether the geological characteristics of the tectonic model and the geological characteristics of the current formation information satisfy preset similarity is judged; and if the geological characteristics of the tectonic model and the geological characteristics of the current formation information do not satisfy the preset similarity, the material parameters of the particles of various historical formations in the initial discrete element model are adjusted, tectonic deformation is performed on the parameter-adjusted initial discrete element model until the geological characteristics of a tectonic model which is obtained through the deformation of the parameter-adjusted initial discrete element model and the geological characteristics of the current formation information satisfy the preset similarity.
Owner:PETROCHINA CO LTD
Structural interpretation method for fault block oil and gas field
The invention relates to a structural interpretation method for a fault block oil and gas field, which comprises the following steps of: collecting seismic data and logging data of a research area, and performing preliminary fault interpretation and preliminary structural interpretation; on the basis of the preliminary fault interpretation, the backbone section is interpreted, and an initial framework is formed; the backbone section comprises a section corresponding to a well passing main measuring line and a well connecting line; on the basis of the initial framework, selecting a section every N main measuring lines, selecting a section every M connecting lines, and explaining the sections to obtain a fault initial explaining model; on the basis of the fault initial interpretation model, more sections are interpolated step by step, interpretation is carried out, and a fault final interpretation model is obtained; according to the preliminary structural interpretation and the fault final interpretation model, establishing a structural model; and verifying according to the seismic data and the logging data. According to the interpretation method, the interpretation precision can be improved by gradually interpolating the section.
Owner:CHINA PETROLEUM & CHEM CORP +1
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