Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

179 results about "Thin section" patented technology

In optical mineralogy and petrography, a thin section (or petrographic thin section) is a laboratory preparation of a rock, mineral, soil, pottery, bones, or even metal sample for use with a polarizing petrographic microscope, electron microscope and electron microprobe. A thin sliver of rock is cut from the sample with a diamond saw and ground optically flat. It is then mounted on a glass slide and then ground smooth using progressively finer abrasive grit until the sample is only 30 μm thick. The method involved using the Michel-Lévy interference colour chart. Typically quartz is used as the gauge to determine thickness as it is one of the most abundant minerals.

Rock slice mineral identification method, medium and equipment

The invention discloses a rock slice mineral identification method, a medium and equipment, and relates to the technical field of mineral identification, the method comprises the following steps: obtaining single polarized light images and orthogonal polarized light images of a rock slice under a plurality of polarized light angles, and carrying out image labeling to obtain a label image set; a rock slice mineral recognition model is constructed based on a U-Net architecture, the left part of the rock slice mineral recognition model of the U-Net architecture is connected with five feature extraction blocks through four downsamples, each feature extraction block is formed by connecting a convolution and a Swing-Transform Stage, and features are output by the Swing-Transform Stage; and training and testing the model by using the label image set, and inputting a to-be-detected rock slice image into the trained model to obtain a mineral segmentation result. According to the scheme of the invention, the method is high in recognition capability for complex mineral images under polarized light of different angles.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Rock image classification method based on edge enhancement and multi-scale feature fusion

The invention provides a rock image classification method based on edge enhancement and multi-scale feature fusion. By combining the edge enhancement and multi-scale feature fusion technology, the accuracy of mineral classification in the rock slice image is remarkably improved. According to the method, rock slice image interference is eliminated through filtering and denoising, and mineral particle edges are enhanced by fusing morphological top-hat transformation and a Laplace operator; and performing multi-scale pyramid decomposition on the enhanced image to extract high-frequency information, performing multi-direction response enhancement to generate a direction feature map, and performing channel-level fusion on the original image, the edge enhanced image and the direction feature map. And finally, inputting the fused image into a convolutional neural network to complete rock type classification. According to the method, mineral boundary expression is effectively enhanced, the classification accuracy is improved, and a reliable technical scheme is provided for geological analysis and lithology identification.
Owner:XI'AN PETROLEUM UNIVERSITY

Method for analyzing sedimentary basin object source based on detrital zircon age

The invention discloses a method for analyzing a sedimentary basin object source based on the detrital zircon age, and belongs to the field of analysis and detection, and the method comprises the following steps: S1, uniformly sampling in a known well and a potential object source area of a target layer to obtain a rock sample; s2, slicing the obtained rock sample to obtain a plurality of common slice samples and casting body slice samples, then performing component identification on slices, and analyzing identification results; s3, performing statistics on sandstone debris components of the Benxi group sample in the research area, and drawing a lithologic triangular diagram; s4, drawing a Qt-F-L diagram according to the debris component data of the research area; s5, representative samples in the research area are selected for heavy mineral analysis; s6, selecting representative samples in the research area, and measuring major elements and rare earth elements in the representative samples to analyze the material source supply condition of the research area; s7, performing U-Pb chronological characteristic analysis on the fragment zircon of the sample; and S8, performing U-Pb dating analysis on the fragment zircon of the sample.
Owner:SHAANXI YANCHANG PETROLEUM GRP

AI mineral automatic identification method based on optical micrograph

The invention relates to the cross technical field of artificial intelligence and mineralogy, and discloses an AI mineral automatic identification method based on an optical microphotograph, comprising the following steps: step S1: data acquisition and preprocessing; s2, data classification and labeling: constructing a rock microscopic image data set by adopting a two-stage labeling process; s3, building and training a deep learning model; s4, model optimization and quantitative feature learning; s5, developing a software platform; and S6, hardware system combination and full-process automation are carried out. In the aspect of operation convenience, a full-automatic slice scanning hardware system is constructed and combined with an intelligent software platform, so that full-process automatic operation from automatic rock slice scanning, automatic mineral analysis to automatic PDF report generation is realized, manual intervention is greatly reduced, the operation difficulty and complexity are reduced, and the working efficiency is improved. And even an operator without rich experience can easily complete complex mineral identification work.
Owner:NANJING HONGCHUANG GEOLOGICAL EXPLORATION TECH SERVICE CO LTD

Quartz raw ore process mineralogy analysis method and method for judging whether quartz raw ore can serve as high-purity quartz raw ore or not

The invention belongs to the technical field of quartz raw ore process mineralogy analysis, and particularly relates to a quartz raw ore process mineralogy analysis method which is a method for judging whether quartz raw ore can be used as high-purity quartz raw ore or not. The quartz raw ore is subjected to sample preparation, wherein a sample preparation method of a powder sample comprises the steps of crushing, wet grinding, filtering concentration and drying in sequence; carrying out chemical component analysis, phase component analysis and crystal structure analysis on the obtained powder sample; and carrying out electron probe microcell analysis, laser Raman spectrum analysis, lithofacies microscopic analysis and inclusion microscopic analysis on the obtained optical sheet. According to the quartz raw ore process mineralogy analysis method, the preparation method of the powder sample is simple, low in energy consumption and environmentally friendly, meanwhile, the obtained powder sample is slightly polluted by the outside, the obtained quartz raw ore process mineralogy analysis result can be closer to a true value, meanwhile, stable production of high-purity quartz sand can be ensured, and the production cost is reduced. And the loss of manpower, financial resources and material resources is reduced.
Owner:CHINA BUILDING MATERIALS ACADEMY CO LTD +1

Fracturing engineering dessert evaluation method based on mechanical parameter test of rock debris indentation while drilling

The invention discloses a fracturing engineering dessert evaluation method based on a while-drilling rock debris indentation mechanical parameter test. The fracturing engineering dessert evaluation method comprises the following steps: S1, obtaining a while-drilling rock debris sample; s2, processing the rock debris sample while drilling into a casting body sheet; s3, acquiring micro-mechanical parameters of each test point; s4, obtaining macromechanical parameters of the rock debris sample; s5, core triaxial mechanical parameters of reservoir rock are obtained; s6, establishing relevance between micromechanical parameters of the while-drilling debris sample and triaxial mechanical parameters of the rock core, and correcting the micromechanical parameters obtained by a subsequent indentation method to obtain rock mechanical parameters of different well depths of the horizontal well section; S7, respectively carrying out weighted average treatment on the obtained rock mechanical parameters, and proposing a fracturing index; and S8, according to the fracturing indexes, a K-clustering analysis method is adopted, and the horizontal section stratums are classified and evaluated according to the three types of reservoir stratums. The horizontal well mechanical parameter testing and reservoir compressibility evaluation method is formed through the fracturing indexes, and a traditional reservoir evaluation method mainly based on geology is changed.
Owner:PETROCHINA CO LTD

CLSM fluorescence spectrum-based detection and visualization method for density of crude oil in rock slice

The invention discloses a method for detecting and visualizing the density of crude oil in a rock slice based on a laser scanning confocal microscope (CLSM) fluorescence spectrum, and relates to the field of crude oil density detection. The method comprises the following steps: collecting crude oil spectral data by using CLSM, and carrying out baseline correction, data smoothing and standardization processing; spectral features highly related to the density of the crude oil are screened out through the Pearson's correlation coefficient; a density prediction model is established based on an SVM-R model, and parameters are optimized to improve prediction precision. The density prediction and result visualization of the spectral data are realized by utilizing self-developed interactive software. According to the method, the detection precision R2 of a complex sample is remarkably improved to 0.9558, and the method has real-time analysis and dynamic visualization functions and is suitable for crude oil density evaluation and thermal drive optimization scenes in oilfield development.
Owner:NORTHEAST GASOLINEEUM UNIV

Method for determining shale content of tight sandstone

The invention discloses a method for determining the shale content of tight sandstone, and relates to the technical field of exploration and research of tight rock oil and gas reservoirs. The method comprises the following steps: identifying a rock slice identification photo by using a computer image identification method, obtaining the area percentage of debris particles with the diameter greater than a set threshold value in the slice identification photo, and then calculating the area percentage of argillaceous particles in the slice identification photo; according to the area percentage of the argillaceous particles and the corresponding times of the polarizing microscope, displaying the argillaceous particles in a rectangular coordinate system in a scatter mode; fitting all scatter points by using a nonlinear least square method, and establishing a shale content volume percentage change relation curve under different objective lens multiples of the polarizing microscope; and solving the curvilinear equation, and calculating the shale content of the sample by using the curvilinear equation. According to the method, the error caused by the fact that the shale content is calculated by an eye estimation method singly through a slice identifier is avoided, and the analysis result is more consistent with the real content of the sample, so that the accuracy of the shale content determination by an image method is greatly improved.
Owner:PETROCHINA CO LTD

Deep carbonate rock lithology identification method based on gamma-ray spectrum logging

The invention relates to the technical field of geological rock type identification, and discloses a deep carbonate rock lithology identification method based on gamma-ray spectrum logging, and the method comprises the steps: S1, collecting a large number of rock cores, slices and the like as verification data; s2, performing statistics on slice identification results of 4, 6, 7 and 8 well carbonate rock coring layer sections of the ancient city in the research area, and dividing the carbonate rock in the research area into five types, namely grit limestone, mud crystal, bright crystal grit limestone, mud crystal limestone, cloud limestone and dolomite; and S3, calibrating on a single well histogram, and counting gamma-ray energy spectrum (U, K, TH, PE) values corresponding to the slice samples. According to the method provided by the invention, the lithology of the carbonate rocks in the fourth, sixth, seventh and eighth wells of the ancient city is identified with relatively high accuracy, fine lithology changes are further identified in the originally explained large set of limestone, the accuracy is far higher than that of logging and debris logging through rock core inspection, and the accuracy of identifying the lithology of the carbonate rocks is greatly improved.
Owner:DAQING OILFIELD CO LTD +1

Method and system for identifying grain boundaries and minerals in a sample

A method for generating a training dataset for determining grain boundaries and minerals in a thin section of a rock sample, includes receiving the thin section of the rock sample, generating optical images of the thin section with an optical tool, generating mineral phase images of the thin section with an electron microscopy tool, computing first and second pseudo-images based on different features extracted from the optical images, generating the training dataset based on (1) the optical images, (2) the mineral phase images, and (3) the pseudo-images, and training a single deep neural network, DNN, based on the training dataset to simultaneously determine a mineral type and grain boundaries in the thin section of the rock sample.
Owner:CGG SERVICES SAS

Prediction method for vertical evolution of compacted diagenetic fracture of glutenite reservoir

The invention provides a method for predicting vertical evolution of compacted diagenetic fractures of glutenite reservoirs. Main rock types and rock components of the glutenite reservoirs in an actual work area are obtained through rock core observation and slice identification; the method comprises the following steps: preparing artificial rock samples which have the same rock components as those of an actual work area and are in different burying and compacting stages by compacting physical diagenesis simulation experiment equipment; measuring fracture parameters of an artificial rock sample in a simulation experiment and fracture parameters of a rock sample in an actual work area, respectively calculating the surface fracture ratios of the artificial rock sample and the rock sample and the brittleness index of each rock sample in the actual work area, and establishing a prediction model for quantitatively evaluating the vertical evolution of the glutenite reservoir compaction diagenesis fracture. The method is used for predicting the development conditions of the compacted diagenetic fractures of glutenite reservoirs with different depths in the actual work area. According to the method, the established prediction model can well predict the development condition of the compacted diagenesis fracture of the glutenite reservoir, especially the development degree of the compacted diagenesis fracture in a BZ19-6 region can be well predicted, and reference is provided for exploration of oil and gas reservoirs.
Owner:CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +1

Rock slice analysis method for quantitative discrimination of shale sedimentary structure

The invention discloses a rock slice analysis method for quantitative discrimination of a shale deposition structure, and the method comprises the steps: scanning and splicing a plurality of rock slice pictures, generating a complete scanning and splicing image, obtaining a corresponding RGB image, carrying out the sharpening of the image, converting the image into a gray image, carrying out the Gaussian blurring, and carrying out the recognition of the image, thereby achieving the quantitative discrimination of the shale deposition structure. Carrying out binarization processing to obtain a binarized image, carrying out morphological reconstruction operation on the binarized image to obtain a reconstructed image, and identifying a closed boundary or contour of rock particles in the reconstructed image; and constructing, analyzing and observing a rock mineral particle total number change trend chart, a rock mineral particle total area change trend chart and a rock mineral particle average area change trend chart, and performing sedimentary structure type division according to the three trend charts. According to the method, the inherent uncertainty of manual statistics is effectively avoided, and the accurate judgment of the long quartz deposition structure type of the shale is remarkably improved.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Rock slice detail identification and slice text description generation method

The invention provides a rock slice detail identification and slice text description generation method, and relates to the technical field of geological analysis. On the basis of constructing a picture and corresponding text description database under the rock polarizing microscope, matching the image under the rock polarizing microscope with a rock name, a mineral composition and a polarizing microscope type by utilizing a fine-tuned CNCLIP contrast learning network; and a text generation model is combined to directly generate slice description from the picture under the rock polarizing microscope. By adopting the method disclosed by the invention, the organization, classification and identification of the rock picture data under the polarizing microscope can be effectively realized, the rock slice image under the microscope can be directly read by the method constructed by the invention, and the content in the picture is matched with the rock name, the mineral and the polarizing microscope type; and on the basis, a text generation model is combined, and finally, the function of automatically carrying out text description on the image under the rock polarizing microscope is realized.
Owner:NORTHEASTERN UNIV CHINA

Diagenesis prediction based on thin section image analysis and open-hole logs

Systems and methods for determining a diagenesis level in a reservoir for performing hydrocarbon extraction include receiving a set of open hole (OH) log data from one or more wells in the reservoir, the OH log data representing a subsurface of the reservoir; executing a diagenesis model to process the set of OH log data, the diagenesis model trained by thin-section image data correlated to labeled OH log data, the labeling identifying values for a quartz overgrowth rate (QOR), a clay coating rate (CCR), or a thin-section porosity in the subsurface based on a value in the OH log data; determining a prediction of a porosity of the reservoir, a permeability of the reservoir, or both the porosity and the permeability; and generating a control signal representing a recommendation to drill a well at a location in the reservoir.
Owner:SAUDI ARABIAN OIL CO

Shale rock slice analysis and identification method based on combination of light microscope and field emission electron microscope

The invention relates to the technical field of material analysis, in particular to a light microscope-field emission electron microscope combined shale rock slice analysis and identification method, which comprises the following steps of: firstly, combining a brightness distribution condition represented by a bright field image of a shale rock slice and a birefringence deviation condition represented by a cross polarization image from an optical angle; determining a mineral discrimination index representing an atomic number agent; applying offsets of different sizes based on the distribution condition of mineral discrimination indexes and the surface fluctuation condition of shale rock slices, and determining a position offset vector by combining gray scale gradient distribution on the basis; and finally, determining the cross-scale positioning and more accurate electron microscope objective table coordinates corresponding to each pixel point in combination with a position offset vector in a pixel coordinate conversion process based on an image physical distance scale and rotation translation processing, so that the cross-scale positioning accuracy of the optical microscope and the field emission scanning electron microscope is higher. The reliability of analyzing and identifying the shale rock slice is obviously improved.
Owner:DAQING OILFIELD CO LTD +1

Method for identifying hydrothermal cause calcite in shale

The invention relates to a method for identifying hydrothermal calcite in shale. The method comprises the following steps: preparing sample slices from calcite samples at the same layer and in different occurrence states; carrying out cathodoluminescence observation on the sample slice to obtain a cathodoluminescence picture; determining rare earth element data of each sample slice by utilizing an element geochemical analysis method; determining a forming mode of a sample slice according to the cathode luminescence photograph and the rare earth element data; wherein the formation mode comprises a later diagenesis mode and a hydrothermal deposition calcite mode.
Owner:PETROCHINA CO LTD

Method for limiting opening duration of natural horizontal hydrofracture tensional fracture in reservoir

The invention belongs to the field of petroleum geology and fluid geochemistry, and discloses a method for limiting opening duration of a natural horizontal hydraulic fracturing tensible fracture in a reservoir. The method comprises the following steps: determining that a horizontal tensional fracture is developed in rock, collecting a rock sample, making a fluid inclusion slice, determining the characteristics of filling blocky crystals in the fracture, combining fluid inclusion lithofacies observation and laser Raman spectroscopy analysis technologies, and selecting a methane-rich fluid inclusion combination as a research object. And carrying out subsequent microscopic temperature measurement analysis and PVT simulation, combining a PVT simulation result with a basin evolution history, and finally obtaining the opening duration of the natural horizontal hydraulic fracturing tensible fracture on the basis of judging the existence of the ultra-quiet rock fluid pressure. The method is low in cost and high in operability, and a certain judgment basis is provided for enrichment and loss of shale gas and tight sandstone gas.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Method and system for automatically identifying cathodic luminescence colors of different minerals in rock

The invention discloses a method and a system for automatically identifying cathodic luminescence colors of different minerals in rock in the technical field of rock and mineral identification. The method comprises the following steps: step 1, preparing a rock slice sample; step 2, acquiring a first fluorescence image through a cathode luminescence microscope, and establishing a basic model; 3, acquiring a second fluorescence image by using different optical filters, determining a brightness change value and a light wavelength mark based on the second fluorescence image and the first fluorescence image, and marking the light wavelength into the basic model; step 4, sequentially comparing the brightness change value with a set brightness reference value to obtain a difference value, and obtaining a fluorescent color area corresponding to the difference value smaller than a threshold value; acquiring a third fluorescence image by using a polarizing microscope, determining a fluorescence color mark corresponding to the fluorescence color area based on cathode luminescence characteristics corresponding to different minerals, and adding the fluorescence color mark into the basic model; the fluorescent colors are distinguished according to weak color changes, so that the cathodic luminescence colors of different minerals of the rock are automatically identified.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Rock slice image component identification method based on deep learning

The invention discloses a rock slice image component identification method based on deep learning. According to the method, a data set is constructed through PCA dimension reduction and normalization, segmentation parameters are generated by utilizing ResNet50 and a self-attention mechanism, automatic classification of quartz, rock debris, kaolinite, pores and matrixes is realized by combining a VGG16 model, two-stage segmentation is performed by adopting AGLFIF and Otsu algorithms, and high-precision identification and geological analysis automation of rock slice images are realized. According to the method, real-time component identification of the rock slice image can be realized, and automation and reliability of geological analysis are improved.
Owner:XI'AN PETROLEUM UNIVERSITY

Method for in-situ leaching mining of sandstone uranium ore

The invention discloses a method for in-situ leaching mining of sandstone uranium ore, the concentration of bicarbonate radical ions in ore bed water in the sandstone uranium ore is lower than 0.5 g / L, the sandstone uranium ore comprises yttrium-containing uranium ore, and the carbonate content is 1.5%-2.5%; the ore bed water serves as a solvent, 500 mL of leaching agents with different pH values adjusted through sulfuric acid are prepared, and the concentration of hydrogen peroxide in the leaching agents is 2 g / L; and determining the maximum pH value when the uranium ore in the slice sample is corroded by using the leaching agents with different pH values, and taking the maximum pH value as a critical pH value. The leaching agent with the critical pH value is used for exploiting the sandstone uranium ore, corrosion to gangue minerals in the leaching process can be reduced, the number of formed colloids and CaSO4 precipitates is reduced, the precipitates are prevented from blocking an ore bed, in addition, the method can be used for target corrosion of the refractory uranium ore, and therefore efficient leaching is achieved.
Owner:BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY

Method and device for quantitatively characterizing influence intensity of ancient volcanic activities

The invention discloses a method and a device for quantitatively characterizing the influence intensity of ancient volcanic activities, which can be used in the field of geophysical exploration, and the method comprises the following steps: determining the compaction recovery coefficient of vacant tuff according to the sorting coefficient and the current porosity; according to the compaction recovery coefficient and the thickness of the bare slice hollow falling type tuff, the original deposition thickness of the hollow falling type tuff is determined; according to the original deposition thickness and the number of layers of the empty tuff, determining the volcanic activity influence intensity of the to-be-detected area; wherein the sorting coefficient is the sorting coefficient of the empty tuff and is obtained by carrying out particle size analysis on a polished thin section; the current porosity is the current porosity of the empty tuff corresponding to the polished section and is obtained by measuring the porosity of the polished section; the thickness and the number of layers of the empty tuff corresponding to the bare slice are obtained by identifying the bare slice. According to the method, evaluation standards of the volcanic activity influence can be established, and the intensity of the volcanic activity influence on the to-be-detected area can be quantitatively represented.
Owner:CHINA NAT PETROLEUM CORP

Volcanic rock lithology identification method and device based on latent attribute characterization and Bayesian inference, and electronic equipment

The invention discloses a volcanic rock lithology identification method based on latent attribute characterization and Bayesian inference. According to the method, volcanic rock core / rock debris slice identification and related geochemical data are taken as calibration basis, multiple groups of logging curves sensitive to the lithologic characteristics of volcanic rock are preferably selected, and quality control and normalization processing are carried out; the method comprises the following steps: learning from a multi-logging curve through an encoder-decoder to obtain a group of mutually decoupled latent attribute representations, and respectively constructing a silicon dioxide content Bayesian classification model and a volcanic rock cause Bayesian classification model by taking the latent attributes as input; the probability prediction based on the silicon dioxide content range (basic / neutral / acidic) and the volcanic rock cause type is realized, the two prediction results are combined, and finally the volcanic rock lithology of the corresponding well section is determined. Meanwhile, the quantitative output uncertainty is used for multi-solution risk prompt, so that the accuracy, the stability and the credibility of a prediction result are improved.
Owner:YANGTZE UNIVERSITY

Method for judging existence form of associated gallium in sandstone type uranium deposit

The invention belongs to the field of basic research of sandstone type uranium ore associated resource evaluation, and particularly relates to a method for judging the existence form of associated gallium in a sandstone type uranium deposit, which comprises the following steps of: measuring the contents of major elements and trace elements of a plurality of uranium ore samples, and judging whether gallium meets the lowest grade requirement of associated resources of the uranium deposit; for uranium ore samples exceeding the lowest grade requirement of gallium associated resources, correlation analysis of gallium elements, main elements and trace elements is carried out, and possible key mineral types closely related to gallium are preliminarily speculated; carrying out slice analysis, and circling an approximate range of speculated possible key mineral types; carrying out scanning electron microscope and energy spectrum analysis combined observation, and determining the existence form of gallium in the uranium deposit; the position exceeding the associated grade gallium is determined through laser in-situ analysis; the gallium-related mineral type is directly determined through electron probe analysis; and comprehensively judging the existence form of gallium in the uranium deposit. According to the method, the existence form of associated gallium in the sandstone type uranium deposit can be accurately and quickly judged.
Owner:BEIJING RES INST OF URANIUM GEOLOGY

Calculation method for chlorite coating coverage rate

A chlorite coating coverage rate calculation method relates to the technical field of geological exploration and comprises the following steps: collecting a typical rock core sample of a clastic rock stratum in a research area, observing sedimentary characteristics, judging sedimentary microfacies, testing physical properties of the rock core sample and chlorite content data, and preparing a sample slice for high-precision observation. Identifying and shooting the particles with chlorite coatings, calculating the coating coverage rates of the sample sheet particles by adopting a cross proportion method, a perimeter proportion method and an angle proportion method respectively, and then taking the mean value of the coating coverage rates of the three methods as the total coating coverage rate of the sample particles; carrying out linear coupling on the calculated total coating coverage rate of the sample particles and the chlorite content, and establishing a relationship between the chlorite coating coverage rate and the chlorite content; according to the method, under the condition that comprehensive actual geological conditions of the clastic rock reservoir containing the chlorite coating are fully considered, the content calculation method of the chlorite coating in the clastic rock reservoir is emphatically solved, and the coverage degree of the chlorite coating can be accurately judged.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Chlorite growth process reconstruction method

A chlorite growth process reconstruction method relates to the technical field of geological exploration, and mainly comprises the following steps: collecting well drilling core sample analysis related data, and preparing rock slices; analyzing the relationship between different deposition periods and environmental conditions and chlorite generation and growth; representing the composition and content of chlorite and other minerals in the rock slice; establishing the relationship between chlorite components and diagenesis evolution stages; collecting rock core sample diagenesis environment sediment samples; the method comprises the following steps: evaluating the influence of organic matters in sediments on chlorite formation, performing multi-scale coupling numerical simulation modeling, establishing a chlorite growth model, and reconstructing a chlorite growth process by using the chlorite growth model; according to the method, core sample analysis, sedimentary environment parameters and multi-scale coupling numerical simulation are comprehensively combined, so that growth evolution of chlorite in each diagenesis stage is clearly reconstructed, and a more accurate and reliable chlorite growth process is obtained.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Rock thin section image data management method, device and equipment

PendingCN122416191AEngineeringData management
The application provides a rock slice image data management method, device and equipment, and relates to the technical field of geological exploration. The method comprises the following steps: acquiring image data and original identification data of a rock slice to be managed, which have first annotation information; identifying key features of the rock through machine learning based on the first annotation information and an identification standard to obtain second annotation information, wherein the second annotation information contains information carrying a first annotation information label; preliminarily checking the original identification data by using the second annotation information carrying the first annotation information label to obtain a checking result and annotation deviation information; performing secondary checking on the original identification data by using the second annotation information not carrying the first annotation information label to obtain annotation missing information; and managing the image data based on the checking result, the annotation deviation information and the annotation missing information in combination with double-expert collaborative identification. The application can improve the accuracy of rock slice image data management.
Owner:LANGFANG INTEGRATED NATURAL RESOURCES SURVEY CENTER CHINA GEOLOGICAL SURVEY

Method, system and device for automatically identifying carbonate rock lithology based on well logging curves

PendingCN122314155ALithologyRock core
This invention relates to the field of carbonate rock lithology identification technology, and particularly to a method, system, and apparatus for automatically identifying carbonate rock lithology based on well logging curves; comprising the following steps: S1, acquiring well logging curve data, core data, and thin section data from multiple wells in the area to be identified; S2, standardizing and environmentally correcting the well logging curve data; S3, using an optimization model to solve for the lithological profile of the area to be identified, thereby determining the clay content, porosity, and water saturation; S4, constructing rock structure curves and formation fracture porosity curves; S5, constructing a machine learning model, setting a learning sample set, and inputting the learning sample set into the machine learning model for training, so that the trained machine learning model can automatically identify carbonate rock lithology; this invention improves the accuracy of carbonate rock lithology identification.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

A method for preparing a fluid-inclusion microtherm ore slice

The embodiment of the application provides a preparation method of a fluid inclusion microthermometric ore slice, comprising the following steps: providing a fluid inclusion slice which has been observed and circled under an optical microscope in detail for microthermometric target fluid inclusion position; putting the whole fluid inclusion slice into a glass culture dish, injecting a slice adhesive dissolving solution into the culture dish, and immersing the whole fluid inclusion slice in the slice adhesive dissolving solution to dissolve the slice adhesive and separate the fluid inclusion ore slice from the bonding surface of the glass slide; after the separation, placing the fluid inclusion ore slice with the adhesive surface upward on the surface of the glass slide and immersing it in the slice adhesive dissolving solution; after the slice adhesive on the surface of the fluid inclusion ore slice is completely dissolved, cutting the fluid inclusion ore slice according to the position of the target inclusion to be measured and thermometric, and preparing a rock and mineral fragment containing the target fluid inclusion which is suitable in size to be placed in a cold and hot stage quartz crucible.
Owner:GUANGZHOU INSTITUTE OF GEOCHEMISTRY CHINESE ACADEMY OF SCIENCES

Method and device for quickly identifying shale formation phase

The invention relates to the technical field of strata facies type identification, in particular to a method and device for rapidly identifying shale strata facies, and the method comprises the following steps: obtaining a to-be-detected strata-containing shale sample; the method comprises the following steps: scanning a to-be-detected shale sample containing the strata by using a portable handheld X-ray fluorescence spectrometer, constructing a measuring point position, and measuring elements in the sample point by point at the measuring point position to obtain the mass percent content of the elements; performing contrast microscopic analysis, selecting corresponding part of point positions at the element measuring point positions to prepare rock slices, and identifying the exact lamina phase type of the rock slices under a microscope; according to the method, the element content in the to-be-detected shale sample containing the lamina is measured through the portable handheld X-ray fluorescence spectrophotometer, the lamina phase type is judged and identified through the element content, identification of a single lamina can be completed within one minute, identification of the lamina phase type can be rapidly completed in a field environment in a lossless and low-cost mode, and the identification accuracy is high. And the identification efficiency of the lamina phase type is improved.
Owner:NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS

Carbonate rock seismic lithology depicting method and system, storage medium and equipment

The invention provides a carbonate rock seismic lithology depicting method and system, a storage medium and equipment. The method comprises the following steps: collecting basic geological data of a research area; lithology identification is carried out on the rock core and the slice of the target layer based on drilling and logging data, the calibration relation between different lithology and a logging curve is obtained, and the content of different lithology in the target layer is calculated; establishing a through-well seismic synthesis record based on the logging curve data, performing target stratum top and bottom stratum tracking in the three-dimensional seismic data volume, and extracting the internal seismic attributes of the target stratum; performing correlation analysis on the contents of the different lithologies and the seismic attributes, obtaining a correlation coefficient between the lithology contents and the seismic attributes, selecting the seismic attributes based on the correlation coefficient, and determining a lithology regression equation; and calculating and acquiring content ratio results of different lithologic components, and integrating the content ratio results to obtain stratum lithofacies distribution characteristics of the target stratum. According to the carbonate rock seismic lithology depicting method, the depicting accuracy is improved.
Owner:CHINA NAT PETROLEUM CORP +2