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628 results about "Petrology" patented technology

Petrology (from the Ancient Greek: πέτρος, romanized: pétros, lit. 'rock' and λόγος, lógos) is the branch of geology that studies rocks and the conditions under which they form. Petrology has three subdivisions: igneous, metamorphic, and sedimentary petrology. Igneous and metamorphic petrology are commonly taught together because they both contain heavy use of chemistry, chemical methods, and phase diagrams. Sedimentary petrology is, on the other hand, commonly taught together with stratigraphy because it deals with the processes that form sedimentary rock.

Artificially-assisted packing method for sand control and water control in fractured reservoir, and packing effect evaluation method

The present invention belongs to the technical field of oil and gas engineering. Disclosed are an artificially-assisted packing method for sand control and water control in a fractured reservoir, and a packing effect evaluation method. The artificially-assisted packing method for sand control and water control in a fractured reservoir comprises the following steps: S11, calculating a fracture occurrence evaluation index F for a fractured reservoir; S12, calculating an artificially-assisted packing process implementation feasibility index G; and S13, on the basis of the fracture occurrence evaluation index F obtained in step S11 and the artificially-assisted packing process implementation feasibility index G obtained in step S12, selecting one of a natural micro-saturated packing process, an artificially-assisted squeezing supersaturated packing process and an artificially-assisted fracturing strong-saturated packing process for packing. By means of the packing method in the present invention, an appropriate packing mode is correspondingly selected on the basis of the structure of a natural fracture in a reservoir, and the matching degree between the natural fracture and an available proppant, thereby "making the remedy suit the case" and effectively ensuring the effect of sand control and water control.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA) +1

Research method for vanadium enrichment mechanism in diagenetic stage of phosphorus vanadium ore

The invention belongs to the technical field of vanadium enrichment mechanisms of phosphorus vanadium ores, and discloses a research method of a vanadium enrichment mechanism in a diagenetic stage of phosphorus vanadium ores, which comprises the following steps: S1, sample collection and treatment; s2, rock ore identification and mineral composition analysis; s3, analyzing the occurrence state and microcell morphology of vanadium; s4, performing geochemical analysis on the whole rock; s5, in-situ microcell geochemical analysis is carried out; s6, phosphorus nodule analysis; s7, comprehensive analysis and mineralization model establishment; according to the method, mineralogy, total rock geochemistry, micro-area surface scanning and other multi-scale and multi-means research methods are comprehensively utilized, and the vanadium occurrence state, the ore-forming fluid evolution and the phosphorus-vanadium coupling relation are finely described; in-situ microcell geochemical analysis is introduced into phosphorus nodule analysis, the internal structure, the growth sequence and element distribution of the phosphorus nodule are directly revealed, obvious frontier and systematicness are achieved, and reliable theoretical support is provided for accurate exploration of vanadium ore resources and green and efficient dressing and smelting process research and development.
Owner:ANHUI UNIV

Salt lake carbonate rock multi-parameter quantitative classification and reservoir evaluation method

The invention discloses a salt lake carbonate rock multi-parameter quantitative classification and reservoir evaluation method, and relates to the technical field of oil-gas exploration. The method comprises the following steps: selecting a key well in an exploration block, collecting a plurality of salt lake carbonate rock samples, preparing an analysis sample under an anhydrous condition, quantitatively measuring a salinity parameter, a mixing index and a diagenesis strength parameter by utilizing the analysis sample, and determining a salinity code, a mixing code and a diagenesis phase code. And naming the salt lake carbonate rock based on the salinity code, the mixed product code and the lithogenous phase code, directly evaluating the salt lake carbonate rock reservoir according to a naming result, and performing single well comprehensive evaluation on the salt lake carbonate rock reservoir. According to the method, the influence of salinity, mixed accumulation and diagenesis strength on formation and evolution of the salt lake carbonate rocks is fully considered, accurate division of the types of the salt lake carbonate rocks is achieved, the reservoir naming result is directly associated with reservoir evaluation, and technical support is provided for standardized evaluation of the salt lake carbonate reservoir.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Shale oil dessert well logging evaluation method and device based on source reservoir coupling characteristics

The invention relates to the field of oil and gas field exploration and development, in particular to a shale oil dessert well logging evaluation method and device based on source-reservoir coupling characteristics, and the method comprises the steps: determining the reservoir quality according to the effective porosity and effective thickness of a shale oil reservoir in a research area; the effective porosity is greater than a preset porosity lower limit threshold; evaluating the quality of each hydrocarbon source rock stratum section according to the effective points of the total organic carbon content of the kerogen in the research area, the effective thickness of the layer section corresponding to each effective point and the total organic carbon content of the kerogen of the effective point; according to the coupling relation between the reservoir quality and the quality of the hydrocarbon source rock stratum section within the estimated longitudinal distance range of the position of the effective point of the total organic carbon content of the kerogen; according to the coupling relation, shale oil desserts within the longitudinal distance range are evaluated and estimated. On the basis of hydrocarbon source rock quality classification, reservoir quality classification and a source-reservoir coupling relationship, a foundation is laid for accurate classification evaluation of shale oil dessert development sections.
Owner:RICHFIT INFORMATION TECH +1

Shale oil sweet spot logging evaluation method and apparatus based on source-reservoir coupling characteristics

The present description relates to the field of oil and gas field exploration and development, and in particular, to a shale oil sweet spot logging evaluation method and apparatus based on source-reservoir coupling characteristics. The method comprises: on the basis of the effective porosity and effective thickness of a shale oil reservoir in a research area, determining reservoir quality, wherein the effective porosity is greater than a preset porosity lower threshold; on the basis of effective points of kerogen total organic carbon content in the research area, the effective thickness of an interval corresponding to each effective point, and the kerogen total organic carbon content of each effective point, evaluating the quality of source rock intervals; on the basis of an estimated longitudinal distance range of the positions where the effective points of kerogen total organic carbon content are located, determining a coupling relationship between the reservoir quality and the quality of the source rock intervals; and on the basis of the coupling relationship, evaluating a shale oil sweet spot within the estimated longitudinal distance range.
Owner:RICHFIT INFORMATION TECH +1

Prediction method for underground rock fracture risk in carbon dioxide sequestration project

The invention provides a method for predicting an underground rock fracture risk in a carbon dioxide sequestration project, and the method comprises the steps: obtaining carbon dioxide time sequence pressure data of a plurality of monitoring points in a carbon dioxide sequestration region; performing feature analysis on the carbon dioxide time sequence pressure data to obtain spatial features and time features; fusing the spatial features and the time features to obtain space-time fusion features; geological parameters and rock fracture historical data of the carbon dioxide sequestration area are obtained; performing characteristic engineering processing on the geological parameters and the rock fracture historical data to obtain geomechanical characteristics; inputting the space-time fusion features and the geomechanical features into a pre-trained rock fracture prediction model to obtain rock fracture prediction data; wherein the rock fracture prediction model is a CNN-LSTM hybrid model. According to the technical scheme, the underground rock fracture risk in the carbon dioxide sequestration project can be accurately predicted.
Owner:HUANENG CLEAN ENERGY RES INST +1

LSTM-based coal mine gas concentration time sequence prediction method and system

The invention relates to the technical field of coal mine gas concentration prediction, in particular to a coal mine gas concentration time sequence prediction method and system based on LSTM. The method comprises the following steps: collecting multi-source data such as a mining machine pose time sequence, a micro-seismic monitoring event sequence and roadway environment monitoring, constructing a damage-permeability evolution equation by combining geological information, inverting a coal-rock mass dynamic stress damage field, calculating a gas dynamic permeability field and a gushing source intensity field, and finally predicting the gushing source intensity field by combining a space-time prediction model with historical data. And predicting future gas concentration distribution. And real-time space positioning of the coal mine gas emission source is realized.
Owner:CHINA UNIV OF MINING & TECH (BEIJING) +2

Cementing Compositions For Plugging Very Large Fracture Widths

A method of sealing a lost circulation zone may include: circulating a lost circulation treatment composition to a subterranean formation comprising a lost circulation zone, wherein the lost circulation treatment composition comprises: a carrier fluid; a polymeric additive; a fine particulate component; and a composite particulate component containing size and shape selected materials; wherein the cost circulation treatment composition has the property of allowing full volume passage through a 15,000 micron fracture width; flowing the lost circulation treatment composition into the lost circulation zone; and plugging the lost circulation zone using the lost circulation treatment composition.
Owner:HALLIBURTON ENERGY SERVICES INC

Efficient multiphase-flow graded-separation, concentration, and purification system for argillaceous sandstone uranium ore

An efficient multiphase-flow graded-separation, concentration, and purification system for argillaceous sandstone uranium ore includes a hydraulic tossing washing and scattering pretreatment device, a high-frequency linear vibration grading device, a first-stage multiphase-flow swirling grading device, an energy-gathering ultrasonic scrubbing device, a second-stage multiphase-flow swirling grading device, a high-frequency linear vibration dewatering device, an efficient uniform-mixing and activating system and a conditioning and pressing dewatering system. The present disclosure implements intensive mud-sand stripping of crushed argillaceous sandstone uranium ore, fine graded-separation of material, and efficient uniform-mixing and activating and deep efficient dewatering of fine-particle argillaceous material. Finally, four types of core material of coarse sand material, fine sand material, dry tailings residue and a high-concentration uranium ore leaching solution are formed through continuous work. Efficient multiphase-flow graded-separation, concentration and purification of the argillaceous sandstone uranium ore are implemented, and an intensive extraction rate of uranium ore resources is improved.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI

Method for determining spontaneous combustion evolution process of end slope coal of strip mine

The invention provides a method for determining the spontaneous combustion evolution process of end slope coal of a strip mine, and belongs to the field of geotechnical engineering geological disaster prevention and control and the field of mine safety and environmental protection. Updating the porosity, the permeability and the range of the combustion space area in the pre-established three-dimensional geologic model by adopting the three-dimensional distribution of the porosity of the bending subsidence zone, the permeability of the fissure zone, the permeability of the caving zone and the porosity of the caving zone in the combustion space area; performing coal fire evolution simulation again according to the updated pre-established three-dimensional geologic model to obtain a coal fire development range, an updated real-time temperature field range and a gas concentration field; and if the combustion cannot be continued, outputting a final coal fire development range and an updated real-time temperature field range. According to the method, the efficiency and accuracy of open-pit mine end slope coal fire treatment are effectively improved.
Owner:LIAONING TECHNICAL UNIVERSITY

Apparatus and method for controlling flashing in rock drilling

Apparatus, method and computer program product for controlling flushing in rock drilling and rock drilling rigs. The apparatus includes a control unit (CU) and a computer program (22) for controlling the supply of a liquid component (LC) in an air mist flushing system in response to a detected seepage rate (15) of the drilling performed. An operator (22) can set a desired moisture target value (16) for the cuttings (19) removed from the drill hole (12) and the control system automatically adjusts the flushing system to control the supply of the liquid component.
Owner:SANDVIK MINING & CONSTR OY

Remote controllable shock wave combined with hydraulic fracturing for large-scale seam fracture prevention

The application discloses a coal rock anti-burst method of large-range seam forming by remote controllable shock wave and hydraulic fracturing, and comprises the following steps: step one, detecting and recording the stress concentration degree of target coal seam or rock stratum; step two, drilling; step three, withdrawing the hollow drill rod, arranging the discharge electrode connected with the cable at the front end of the hollow drill rod, and sending the discharge electrode into the drill hole through the hollow drill rod; step four, sealing the hole by using a hole sealer and performing hydraulic fracturing; steps five to seven, completing multiple repeated electric pulse discharge operations; and step eight, testing the pressure relief effect of the coal seam or rock stratum. The method uses the drilling cuttings method, high-pressure hydraulic fracturing and high-voltage electric pulse to perform large-range cracking and pressure relief on the coal rock stratum, changes the stress state of the coal rock stratum, and reduces the stress concentration degree, so that the anti-burst purpose is achieved. The method is mainly applied to deep coal rock body tunneling roadways and coal mining working faces containing coal rock body impact tendency.
Owner:CHONGQING UNIV

Ore prospecting exploration method for ion adsorption type heavy rare earth ore in middle and low mountainous areas

The invention discloses a prospecting exploration method for ion adsorption type heavy rare earth ore in middle and low mountainous areas, and belongs to the technical field of geological mineral exploration. According to Y, Dy and Nb abnormity and Y-Nb combination abnormity areas such as water chemical exploration and soil chemical exploration of a working area, high-silicon, potassium-rich, alkali-rich and sphene-rich heavy rare earth secondary mineral mineralization mother rocks are preferably selected, and a favorable mineralization area of the ion adsorption type heavy rare earth ore is delineated by combining characteristic parameters that Y / Ce is greater than 0.9 and Dy / Ce is greater than 0.2; screening south and east-south-east abrupt slope (gradient of about 30 degrees) areas by utilizing a GIS spatial analysis technology, overlapping favorable mineralization areas of the ion adsorption type heavy rare earth ore, and comparing and determining an ion adsorption type heavy rare earth ore prospecting target area in a working area; whether mineralization abnormity exists in the heavy rare earth ore prospecting target area or not is verified by using a manual impact sampling drill and a rare earth ion leaching-titration qualitative analysis method; chemical samples are preliminarily collected, 15 components of ion phases are analyzed, whether heavy rare earth ore bodies exist or not is judged and evaluated, the prospecting exploration range of the ion adsorption type heavy rare earth ore is determined, and the prospecting efficiency of the ion adsorption type heavy rare earth ore is improved. According to the method, the mineralization prospective area of the ion adsorption type heavy rare earth ore can be rapidly delineated in a large range, the prospecting target area is narrowed, and the prospecting efficiency of the ion adsorption type heavy rare earth ore is improved.
Owner:YUNNAN UNIV

Efficient mineral selective flotation reagent and application thereof

The invention discloses an efficient mineral selective flotation reagent and application thereof, and aims to improve the selectivity and recovery rate of mineral flotation. The composition comprises a first precursor (P1), a second precursor (P2), and a resonance activation adjuvant (Aux). The first precursor P1 has an anchoring group capable of acting on the surface of a target mineral and a first reactive functional group; the second precursor P2 includes a hydrophobic group and a second reactive functional group capable of a ligation reaction with the first reactive functional group of P1. The application method comprises the following steps: adding P1 and Aux into ore pulp to react with minerals; and applying an external energy field (such as ultrasonic wave or illumination with specific wavelength) to activate P1 and Aux adsorbed on the surface of the mineral. Through an in-situ interface reaction strategy assisted by an external energy field, directional adsorption and effective coverage of the agent on the surface of the mineral are remarkably improved, flotation dynamics is improved, flotation requirements of different mineral types can be met, and a new technical approach is provided for efficient utilization of complex and refractory ores.
Owner:ZHENGZHOU UNIV

Coal rock hydraulic fracturing crack dynamic evolution monitoring equipment and method

The invention discloses coal rock hydraulic fracturing crack dynamic evolution monitoring equipment and method, and the method comprises the steps: firstly applying three-way independent stress to a coal rock test piece through a true triaxial loading module, and simulating an underground true stress environment; then an ultrasonic excitation module is started, an ultrasonic physical field excitation environment is applied to the coal rock test piece, and development of microcosmic fractures in the coal body is promoted; and the high-pressure pump injection module is started, high-pressure water is injected into the coal rock test piece at constant flow or constant pressure, and more efficient hydraulic fracturing is achieved under excitation of the ultrasonic physical field. In the whole process, the acoustic emission monitoring module captures an elastic wave signal generated by coal rock fracture in real time, and the microcrack initiation position is accurately positioned; the CT scanning module obtains the three-dimensional expansion morphology of the macroscopic crack through scanning; and finally, through a multi-physical field cooperative loading and multi-scale monitoring technology, the whole-process dynamic representation from microcrack initiation to macroscopic crack penetration is realized, and a theoretical support and a technical means are provided for efficient development of coal bed gas.
Owner:CHONGQING UNIV

Drill hole quality and stratum characteristic inversion method and device based on dynamics and rock debris form and medium

The invention discloses a drilling quality and stratum characteristic inversion method and device based on dynamics and rock debris morphology and a medium, and relates to the field of artificial intelligence, and the method comprises the steps: synchronously collecting a drilling dynamics signal and a rock debris image sequence in a drilling process; extracting a drilling dynamics high-frequency characteristic spectrum based on the drilling dynamics signal; extracting a rock debris morphological parameter sequence based on the rock debris image sequence; inputting the drilling dynamics high-frequency characteristic spectrum and the rock debris morphological parameter sequence which are aligned in time into a pre-trained multi-task deep learning model; and a hole wall quality evaluation result and a stratum characteristic identification result synchronously generated by the multi-task deep learning model are obtained, the hole wall quality evaluation result is used for representing the hole wall state, and the stratum characteristic identification result is used for representing the stratum attribute. According to the method, the drilling quality and the stratum characteristics can be inversed in real time based on deep fusion and synchronization of the multi-source while-drilling information.
Owner:SHENZHEN XIANHE WATER CONSERVANCY & HYDROPOWER ENG CO LTD

Method for preventing and treating overlying strata separation layer water disasters during mining of Jurassic coal seam

The invention relates to the technical field of coal mining, and provides a Jurassic coal mining overlying strata separation layer water disaster prevention and control method which comprises the following steps: S1) acquiring and analyzing geological and hydrological conditions of a stoping mining area, and determining whether a separation layer exists on a top plate of overlying strata or not; s2) if it is determined that there is a separation layer, obtaining separation layer parameters, and determining a separation layer type and a separation layer water disaster type according to the separation layer parameters; s3) if the separation layer type is determined to be a disaster type, cutting off the aquifer of the top plate or cutting off a water channel flowing to the separation layer through the surrounding rock strong runoff fault zone; s4) guiding and discharging accumulated water in the separation layer through the upper flow guide hole and / or the lower flow guide hole; according to the prevention and control method, the hidden danger of separation water storage can be found as soon as possible, then the measures of cutting off a water source and guiding and draining water storage are adopted to reduce the separation water disaster in the germination stage, and the problem that in the prior art, a separation water disaster prevention and control system is lacked is solved.
Owner:CHINA ENERGY GRP NINGXIA COAL IND CO LTD

Lead zinc ore intelligent exploration method and system based on data fusion modeling

The invention discloses an intelligent lead-zinc ore exploration method and system based on data fusion modeling, and relates to the technical field of geological exploration and mineral resource prediction, and the method comprises the following steps: collecting and preprocessing multi-source heterogeneous geological data; constructing a three-dimensional geological geophysical model; extracting three-dimensional ore control elements and an ore prospecting information body; fusing three-dimensional multivariate information and constructing a three-dimensional metallogenic favorable degree model; and delineating a three-dimensional mineral target area and estimating the resource quantity. The exploration success rate and efficiency of the hidden lead-zinc ore in the miscellaneous rock area can be improved.
Owner:SICHUAN PROVINCIAL INST OF NONMETALLIC (SALT) GEOLOGICAL SURVEY

Ore body prediction method based on three-dimensional geological modeling and geological big data analysis

The invention discloses an ore body prediction method based on three-dimensional geological modeling and geological big data analysis. The method comprises the following steps: S1, establishing a database of a deep edge research area of a mine; s2, establishing a three-dimensional geological model of the research area; s3, constructing a three-dimensional intelligent prediction model of the demonstration area, taking a known ore body model as prior information and geology and geophysical variables as three-dimensional integrated information based on three-dimensional variable data of strata, ore bodies, fractures, geochemical exploration and geophysical exploration in the three-dimensional geologic model, and carrying out target area prediction work; and S4, delineating a prospecting target area, and delineating a favorable prospecting target area by utilizing the constructed three-dimensional intelligent prospecting prediction model and combining geological information of the research area. According to the method, the complementarity of multi-source heterogeneous data is fully utilized, and scientific basis and technical support are provided for quantitative prediction of the deep concealed ore body in combination with the spatial analysis capability of three-dimensional geological modeling and the high efficiency of big data analysis.
Owner:CHINA GEOLOGICAL SURVEY YANTAI COASTAL ZONE GEOLOGICAL SURVEY CENT

Quantitative evaluation method for microbial residual coal mining and settlement reduction effects

The invention discloses a quantitative evaluation method for microbial residual coal mining and settlement reduction effects, and relates to the technical field of mining area resource mining and ecological control. The quantitative evaluation method for the microbial residual coal mining and subsidence reduction effects comprises the following steps: acquiring gas extraction data and ground surface subsidence data of a target goaf region within a set time period after microbial treatment; respectively inputting into a pre-trained time sequence analysis model, and extracting gas extraction time sequence characteristics and ground surface settlement time sequence characteristics of the target goaf region; analyzing a residual coal heat release conversion index and a ground surface settlement control index, and analyzing a collaborative evaluation index of the target goaf region; based on the collaborative evaluation index, the microbial residual coal mining and settlement reduction treatment effect grade of the target goaf region in the set time period is judged, an automatic and objective microbial residual coal mining and settlement reduction effect judgment system is formed by constructing the time sequence characteristics and the evaluation index, and the evaluation accuracy and the application reliability are improved.
Owner:COAL GEOLOGY BUREAU OF NINGXIA HUI AUTONOMOUS REGION

Filtering device and mineral water mineralization equipment

The utility model provides a filter equipment and mineralization equipment of mineral spring, filter equipment includes shell and sets up first filter core subassembly in the shell, is equipped with mineralization cavity, first adjusting cavity and second adjusting cavity in first filter core subassembly, is equipped with mineralization filter core in mineralization cavity, first adjusting cavity sets up in the upstream of mineralization cavity, second adjusting cavity sets up in the downstream of mineralization cavity, is equipped with first one -way conducting structure between first adjusting cavity and mineralization cavity, is equipped with second one -way conducting structure between second adjusting cavity and mineralization cavity, first one -way conducting structure and second one -way conducting structure are used for under the opening of one -way water pressure to open to the mineralization cavity and the corresponding adjusting cavity. The opening and closing of two one -way conducting structures depend on water flow pressure, and the operator can flexibly adjust the flow and residence time of water body in mineralization cavity, and the water body with high mineral content in mineralization cavity and the water body with low mineral content in first adjusting cavity and second adjusting cavity are mixed with each other, thereby obtaining the water body with moderate mineral content.
Owner:GUANGDONG LIZI TECH CO LTD

Application of magnetic separation method for improving lithium ore grade

The invention relates to the technical field of lithium ore grading, in particular to application of a magnetic separation method for improving the grade of lithium ore. The method has the beneficial effects that a new application field of the dry magnetic separation method is provided; the flotation amount is reduced, and the cost is reduced.
Owner:XINJIANG RES INST OF NON FERROUS METALS

A method for determining the initial porosity of mixed sedimentary rocks

This invention relates to the field of oil and gas exploration technology research, specifically to a method for determining the initial porosity of mixed sedimentary rocks. The method includes the following steps: establishing a classical porosity model for the mixed sedimentary rock reservoir to obtain the initial porosity formula for terrigenous clastic sediments; determining the effective storage of snail-like biocavities in the mixed sedimentary rock reservoir through simulation experiments, thereby obtaining the initial porosity of bioclastic sediments in the mixed sedimentary rock; and combining the initial porosity of terrigenous clastic sediments and the initial porosity of bioclastic sediments to obtain the initial porosity of the mixed sedimentary rock. Compared with existing methods, the calculation method of this invention includes biocavity porosity, and particularly, comprehensively considers the influence of terrigenous clastic sediments and bioclastic sediments during deposition, effectively increasing the accuracy of the initial porosity calculation for mixed sedimentary rocks.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Quantitative recovery method for shale clay mineral composition

The invention relates to the field of organic matter-rich shale mineral type and cause research, and discloses a shale clay mineral composition quantitative recovery method, which comprises: S1, cutting and polishing a shale sample, and carrying out argon ion polishing; s2, based on SEM-EDS combined analysis, collecting morphology and energy spectrum characteristics of clay minerals with different causes, and constructing a clay mineral cause standard library; s3, AMICS analysis parameters are optimized, and 2-4 vision fields are selected for scanning to generate original data; s4, processing the scanning data, calculating the mineral content, and performing cross validation with an XRD-Rietveld result; and S5, in combination with a diagenetic evolution sequence and a mass conservation principle, inverting the contents of original montmorillonite and clastic clay minerals. According to the method, clay minerals of different causes are distinguished through the SEM-EDS double-constraint model, AMICS parameters are optimized, the recognition precision is improved, and quantitative recovery of original components is achieved in combination with diagenetic inversion.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Method for analysing the quantity of clay in a sand

Disclosed is use of a compound of formula (I) to determine the quantity of clay in a sand and / or to determine the amount of CMA compound to be added to a hydraulic binder composition using a sand:R1—(OA)n—XR2  (I)where: R1 is a linear or branched C1 to C4 alkyl groups, or a coloured compound; R2 is a coloured compound; A, each the same or different, are independently a —CH2—CH2— group or —CH(CH3)—CH2— group; n is an integer of between 1 and 500, preferably between 4 and 250; and X is O or NH.
Owner:STARCIN HOLDING FRANCE

Graded support decision-making method and system for surrounding rock of water-rich tunnel

The invention discloses a hierarchical support decision-making method and system for surrounding rock of a water-rich tunnel, and relates to the technical field of geotechnical engineering.The method comprises the steps that data of different sections of a target tunnel are collected, and space-time dual alignment is conducted; calculating a water pressure index and a corrosion index according to the collected data, and calculating a baseline value based on physical and mechanical parameters of the surrounding rock; correcting the baseline value according to the water pressure index and the corrosion index, generating a regression label and a grading label, and forming a training sample; constructing edges by taking the sections as nodes to obtain a space diagram, and constructing environment time sequence embedding; the space diagram and the environment time sequence are embedded and fused to serve as input, a water pressure correction coefficient, a corrosion correction coefficient, a regression label and a grading label serve as output, a space-time diagram attention network is trained, and a prediction model is obtained; and inputting the data of the to-be-evaluated section into the prediction model to obtain a prediction result, and generating a support suggestion. The method can effectively improve the surrounding rock stability evaluation precision in the complex water-rock coupling environment.
Owner:CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP +1

Recognition and prediction method for petroliferous basin mixed rock

PendingCN121051484ABiological modelsWell loggingDiamictite
The invention provides an identification and prediction method for petroliferous basin mixed rock. The identification and prediction method comprises the following steps: S1, identifying single well lithofacies; s2, the sedimentary facies type and the sedimentary microfacies type of the sand-mud mixed accumulation area are recognized and divided; s3, establishing a lithofacies combination classification scheme, and forming a matching relationship between the lithofacies combination and the sedimentary microfacies; s4, establishing a well logging database of the mixed rock stratum section of the sand-mud mixed zone; s5, establishing rock physical phase classification by using an SOM neural network clustering analysis method; s6, establishing a lithofacies combination type and sedimentary microfacies identification model; and S7, establishing a spatial distribution model of the sedimentary microfacies and lithofacies combination of the mixed rock. And the mixed rock reservoir is classified and predicted, and the prediction result has higher geological causes and rationality.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Multivariate information fusion method for geochemical data of sandstone type uranium deposit

PendingCN121935811AReduce the influence of external interference factorsImprove exception contrastComplex mathematical operationsCorrelation coefficientOriginal data
The invention belongs to a uranium mine multivariate information fusion method, and particularly relates to a sandstone type uranium mine geochemical data multivariate information fusion method. The method comprises the following steps: (1) carrying out standardization processing on original geochemical analysis element data of the sandstone type uranium mine; (2) calculating a correlation coefficient matrix of the original data, and screening elements with correlation coefficients greater than 0.4 as sample data of information fusion; step (3), calculating a covariance matrix of the sample data; step (4), calculating; (5) calculating an accumulated variance contribution rate; (6) calculating the score coefficient of each principal component, and calculating the score of each principal component; and step (7), according to the comprehensive principal component data, making a comprehensive principal component map, and carrying out geological anomalous body identification. The method has the remarkable effects that multi-information fusion is carried out, the influence of external interference factors can be reduced, the purpose of improving the geochemical data abnormal contrast and the data processing reliability is achieved, and a reliable basis is provided for delineation of the prospective area of the sandstone type uranium mine.
Owner:NUCLEAR IND CORPS 216

Mineral geological exploration sample sorting device

The invention belongs to the technical field of exploration sample crushing and sorting, and particularly relates to a mineral geological exploration sample sorting device which comprises a shell, a feeding port, a crushing device, a conveying device, a screening device, a plurality of nozzles, a collecting device and an X-ray scanning mechanism arranged above the screening device, and the feeding port, the crushing device, the conveying device, the screening device, the nozzles and the collecting device are sequentially arranged in the shell in the material conveying direction. The screening device is arranged at the discharging end above the conveying device, a flow gathering channel of the screening device enables materials to gather towards the center, and the channel is communicated with a plurality of output channels with the diameters gradually increased at the feeding end. The scanning area of the X-ray scanning mechanism is located in the middle of the screening device. The nozzles correspond to the discharging ends of the output channels one to one and are connected with the high-pressure gas storage assembly. The collecting device comprises a plurality of collecting grooves with dust collecting parts, and the dust collecting parts communicate with the air inlet end of the high-pressure air storage assembly. Multi-dimensional precise sorting and dust control under a single process are achieved, and the sorting efficiency and the automation degree are remarkably improved.
Owner:INNER MONGOLIA DIBO MINING IND CO

A mine roadway surrounding rock fissure rock mass bearing capacity while drilling detection equipment

PendingCN122361103APressure responseCoal
The application discloses a kind of mine roadway surrounding rock fissure rock mass bearing capacity detection equipment with drilling, and the application relates to the technical field of coal mine drilling survey, including drill rod, one end of the drill rod is provided with comprehensive drilling bit, water inlet pipe is arranged in the drill rod, and the water inlet pipe is used to supply water to the inside of comprehensive drilling bit, the inside of the drill rod is also provided with detection mechanism, the detection mechanism includes: pressure storage tank, one side of the pressure storage tank is fixedly connected with first connecting pipe, the first connecting pipe is fixedly connected with the output end of water pump at the end away from the pressure storage tank, the present application is provided with pressure detection module, flow rate detection module and high-frequency dynamic pressure sensing module, and combined with multi-parameter synchronous acquisition and coupling analysis, the pressure decay characteristic, flow change characteristic and transient pressure response characteristic can be obtained simultaneously, so as to construct surrounding rock fissure equivalent permeation response parameter, with the advantages of realizing the continuous acquisition of surrounding rock fissure permeation characteristic and its spatial distribution.
Owner:JIANGXI PROVINCIAL EXPRESSWAY INVESTMENT GRP CO LTD