62 results about "Fluid inclusions" patented technology

The invention discloses a determination method for different origins of metallogenic fluids in a mountain-building type gold deposit in the south of Jiangsan. According to the method, through innovative sample collection and pretreatment, high-resolution sampling and fine treatment are carried out on specific parts of an ore deposit; advanced fluid inclusion comprehensive analysis is adopted, and inclusion information is accurately obtained in combination with multiple technologies; high-precision stable isotope determination and innovative interpretation in combination with a regional database are applied; element geochemical deep analysis and innovation index application are carried out, and SR-XRF and a machine learning algorithm are introduced; and finally, through comprehensive data fusion and intelligent analysis, constructing an intelligent platform and drawing a three-dimensional evolution model. The method can effectively integrate multi-source data, accurately determine the origin of the ore-forming fluid, overcome the limitation of a traditional method, improve accuracy and reliability, provide powerful support for deep exploration of ore deposit causes and prospecting exploration, and have important theoretical and practical significance.

The invention discloses a method and a device for removing gas-liquid inclusion in quartz sand. The method comprises the following steps: S1, roasting quartz raw ore; s2, carrying out water quenching and high-voltage electric pulse treatment on the quartz ore subjected to roasting treatment in S1; and S3, purifying the quartz ore obtained in the step S2 to obtain the high-purity quartz sand. According to the method, when the quartz is treated through high-voltage electric pulse water quenching, plasma explosion, thermal stress expansion and the like are generated on a mineral interface, then shock waves and a destructive power field are formed, cracks are generated and expanded, and expansion cracks are generated on the mineral interface in ores while monomers dissociate the quartz and gangue minerals are removed; a discharge channel is established for gas-liquid inclusions and impurities wrapped by the gas-liquid inclusions, damage to aggregative fluid inclusions on the surface layers of quartz particles is intensified, and a high-purity quartz sand raw material with higher quality is provided for semiconductors and photovoltaic quartz glass products.

The invention provides a method for quantitatively evaluating tight sandstone oil-gas migration based on multi-physics field simulation numerical simulation, which comprises the following steps: comprehensively judging the reservoir forming period of a research area through a fluid inclusion uniform temperature experiment in combination with a Petromod basin numerical simulation result; on the basis of obtaining the reservoir forming period of the oil reservoir, determining the porosity, permeability and pore pressure of the reservoir forming period of the oil reservoir; on the basis of obtaining the porosity, the permeability and the pore pressure in the reservoir forming period of the oil reservoir, constructing a finite element plane model of the research area by utilizing Comsol multi-physics field simulation software, constructing a porosity, permeability and pore pressure interpolation function, and carrying out fluid migration by adopting a Rietz equation; and comparing the actual distribution condition of the oil reservoir in the research area with the peak convergence area of the fluid pressure field and the fluid velocity field obtained by simulation to judge a potential oil reservoir distribution area. The result obtained by the method provided by the invention is more accurate and more scientific than the result obtained by determining the upper limit of the well drilling burial depth of the favorable area only by experience in the past.

The invention relates to a semi-quantitative fluid inclusion analysis method based on three-dimensional CT (Computed Tomography) scanning, which is applied to the technical field of geological mineral detection and comprises the following steps: acquiring sample data of a sample to be analyzed; performing sample preparation on the to-be-analyzed sample based on the sample data to generate a target sample; performing three-dimensional CT scanning processing on the target sample to generate three-dimensional cross-sectional image data; performing image preprocessing on the three-dimensional cross-sectional image data to generate processed three-dimensional data; extracting a three-dimensional structure of the fluid inclusion based on the processed three-dimensional data to obtain three-dimensional data of the fluid inclusion; performing parameter calculation and semi-quantitative analysis on the three-dimensional data of the fluid inclusion to generate calculation and analysis data; and generating a fluid inclusion analysis result based on the fluid inclusion three-dimensional data and the computational analysis data. The method has the effect of comprehensively and accurately analyzing the fluid inclusion.

The invention discloses a high-temperature and high-pressure buried hill abnormal pressure cause analysis method. The method comprises the following steps: determining a Raman spectrum of a methane inclusion of a high-temperature and high-pressure buried hill reservoir to be analyzed, a uniform temperature of a fluid inclusion, a burial history and a thermal history graph; determining the paleo-pressure when the methane inclusion is captured, obtaining the inclusion capturing time, and calculating the paleo-pressure coefficient when the methane inclusion is captured; establishing a two-dimensional profile numerical simulation model of the high-temperature and high-pressure buried hill reservoir, and correcting the model according to the logging pressure coefficient and the inclusion paleopressure coefficient to obtain a reliable numerical simulation model; according to a numerical simulation model, a pressure evolution history is recovered, pressure evolution characteristics of hydrocarbon source rocks, a transport system and a buried hill reservoir are tracked, and the cause of the abnormal pressure of the buried hill is analyzed by combining parameters such as a deposition rate, a hydrocarbon generation rate and a hydrocarbon generation amount, so that the cause of the abnormal pressure of the high-temperature and high-pressure buried hill gas reservoir can be effectively judged, and the result is reliable; reliable reference value can be provided for exploration and development of the oil and gas reservoir of the type.

The invention discloses a method for calculating the homogeneous temperature of a fluid inclusion homogeneous as a liquid phase. The method comprises the following steps: by heating a rock slice of a target fluid inclusion, acquiring multiple groups of fluid inclusion temperature data and corresponding fluid inclusion gas-liquid ratio data after a gas phase in the fluid inclusion begins to change; according to the obtained multiple sets of fluid inclusion temperature data and the corresponding fluid inclusion gas-liquid ratio data, a relation model of the fluid inclusion gas-liquid ratio and the fluid inclusion temperature is established; and calculating the uniform temperature of the target fluid inclusion according to the relation model of the gas-liquid ratio of the fluid inclusion and the temperature of the fluid inclusion. According to the method, the time for obtaining the uniform temperature of the liquid-phase fluid inclusion is shortened, the efficiency for obtaining the uniform temperature of the fluid inclusion is improved, and particularly, the method has good practical value in the field of calculation of the uniform temperature of the high-temperature and ultrahigh-temperature fluid inclusion.

The invention discloses a fluid inclusion analysis method based on a big data structure. The method comprises the following steps: step 1, collecting a sample; step 2, data cleaning and arrangement; step 3, data processing and analysis; 4, identifying the position and morphological characteristics of the inclusion in the image by using YOLOv10; step 5, oil and gas filling period and paleo-pressure evolution analysis: step 5-1, data analysis and feature extraction; 5-2, the oil and gas charging period is recognized; 5-3, palaeopressure change curves of different oil and gas charging periods are drawn, the trend of palaeopressure change is captured, and the future pressure evolution trend is predicted; 5-4, according to the pressure evolution trend and the oil and gas filling period, an oil and gas favorable gathering area is deduced; and step 6, oil and gas accumulation time calibration. According to the method, a large amount of fluid inclusion data can be processed and analyzed, the data can be rapidly processed and analyzed, and the efficiency is improved on the premise that the analysis accuracy and reliability are guaranteed.

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.

The invention provides a screening method of granite pegmatite ore resources for high-purity quartz sand and application of the screening method, and relates to the technical field of preparation of 4N8-grade high-purity quartz sand. Systematic analysis is conducted on the granite pegmatite ore resources according to a purified product test result and microscopic morphology observation, whether the ore resources have the potential of purifying the high-purity quartz sand or not is judged, and whether the ore resources have the potential of purifying the high-purity quartz sand or not is judged. Whether the granite pegmatite ore source can be used as a potential raw material for preparing 4N8-grade high-purity quartz sand or not can be effectively screened out. According to the method, purification and observation are carried out synchronously and supplement each other, and the quartz ore and the embedded minerals and fluid inclusion in the quartz sand are observed and identified, so that the technical effects of efficiently evaluating the feasibility of preparing the 4N8-grade high-purity quartz sand from the granite pegmatite ore source on the whole and reducing time and other cost investments are achieved.

The application discloses a fluid inclusion homogenization temperature processing method and system, and relates to the technical field of resource exploration. The method comprises the following steps: obtaining fluid inclusion homogenization temperature data of a research block, constructing a fluid inclusion homogenization temperature data set, and performing preprocessing of sorting and grouping to obtain a plurality of fluid inclusion homogenization temperature data subsets; determining the filling period of fluid inclusions in a thermal history burial history diagram according to the quantity of the fluid inclusion homogenization temperature data in each fluid inclusion homogenization temperature data subset; extracting the fluid inclusion homogenization temperature values at the beginning of oil and gas filling and at the end of oil and gas filling in combination with a preset temperature gradient; obtaining the oil and gas filling start time and the oil and gas filling end time in the thermal history burial history diagram; and obtaining the oil and gas filling duration of the research block. The application effectively improves the accuracy and efficiency of fluid inclusion homogenization temperature data processing, and is beneficial to accurately restoring the thermal evolution process and burial history of a geological body.

The present invention discloses a method and apparatus for purifying high-purity quartz sand from granite pegmatite. The process of the present invention can deeply remove impurities from quartz sand concentrate made from granite pegmatite, effectively removing both fluid inclusion impurities and lattice impurities, which are difficult to remove in quartz. The process is particularly effective in removing interstitial ions such as alkali metals, and also has a certain degree of removal effect on stubborn impurity elements such as aluminum and titanium. This method can enable the purity of high-purity quartz sand to break through the bottleneck of 5N. The present invention has the advantages of simple operation, a short process, and good impurity removal effect.

This invention provides a cryo-laser ablation chamber for reflected light fluid inclusions, belonging to the field of geosciences for the analysis of the composition of single fluid inclusions. The device mainly consists of an outer shell, a cryo chamber, an ablation chamber, and a top cover. The cryo chamber, located at the bottom of the outer shell, is made of pure silver, and its top is mirror-polished and connected to a liquid nitrogen tank and pump via a Teflon hose. The ablation chamber, located above the liquid nitrogen chamber, has a standard sample mounting hole. The chamber is spindle-shaped and has inlet and outlet ports at both ends, connected to a carrier gas pipeline. The top cover is equipped with a calcium fluoride glass viewing window, allowing 193nm laser light to pass through. This invention uses a silver cryo chamber to ensure the required cooling effect; simultaneously, the mirror design at the top of the cryo chamber converts the light emitted by the reflected light microscope into transmitted light, thus enabling precise observation and positioning of the fluid inclusions under test without relying on conventional transmitted light systems.

The invention discloses a pegmatite high-purity quartz purification method and an extraction purity evaluation method.The purification method comprises the steps that S1, a quartz sample C is selected from pegmatite high-purity quartz samples collected in the field through naked eye observation, slice observation under a microscope and total rock analysis in sequence; s2, performing laser confocal Raman spectrum measurement on the quartz sample C to obtain typical characteristic peak data and lattice Al data of a fluid inclusion in the quartz sample C, and rejecting quartz samples which do not meet requirements based on the lattice Al data to obtain a quartz sample D; s3, performing fluid inclusion temperature measurement on the screened quartz samples D, and selecting quartz samples E with the uniform temperature less than 600 DEG C from the quartz samples D; and bursting the quartz sample E to obtain a final purified product. The invention further provides a pegmatite high-purity quartz extraction purity evaluation method. According to the invention, purification of pegmatite high-purity quartz is realized, and grading evaluation of the purified quartz is realized.

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.

The present invention belongs to the field of petroleum geology and fluid geochemistry, and discloses a method for limiting the duration of opening of natural horizontal hydraulic fractures in a reservoir. By determining that horizontal tensile fractures are developed in the rock, collecting the rock sample and making fluid inclusion thin sections, determining the characteristics of the massive crystals filling the fractures, combining fluid inclusion petrographic observation with laser Raman spectroscopy analysis technology, selecting a methane-rich fluid inclusion combination as the research object, conducting subsequent microthermometry analysis and PVT simulation, combining the PVT simulation results with the basin evolution history, and finally obtaining the duration of opening of natural horizontal hydraulic fractures based on the identification of the existence of ultra-static rock fluid pressure. The method of the present invention is low in cost and highly operational, and provides a certain basis for judging the enrichment and loss of shale gas and tight sandstone gas.

The application discloses a fluid inclusion standard sample for in-situ isotopic analysis and a preparation and application thereof. The preparation method comprises the following steps: obtaining silicate glass powder with uniform components, carrying out high-temperature and high-pressure reaction on the glass powder and an equal mass of a fluid salt solution in a closed Cu-Au tube, taking out a reaction product after the reaction and drying the reaction product, and obtaining the fluid inclusion standard sample for isotopic analysis. The application can rapidly capture fluid inclusions in the silicate glass with uniform components, and accurately measure and control Cu isotopes in the fluid inclusions by the degree of Cu isotope fractionation between the acid salt melt and the fluid.

The invention belongs to the field of petroleum geological exploration, particularly relates to a method for determining the reservoir forming time of a deep concave area of a continental facies fault lake basin, and aims to solve the problems that the reservoir forming time of the deep concave area of the continental facies fault lake basin can only be obtained in a semi-quantitative manner and the reservoir forming time of the deep concave area of the continental facies fault lake basin is easily misjudged in the prior art. The method comprises the following steps: determining an oil-containing well section, selecting sandstone with developed calcite cement as a sample, and making the sandstone into slices; determining the type of a fluid inclusion, and further determining the type of an oil inclusion; obtaining the rare earth element partition mode similarity of the slices, and confirming the cementation period of the slices; selecting slices which contain the native inclusion and are in the same cementation period, and making the slices into a circular target sample; and performing U and Pb element scanning on the circular target sample, and performing U-Pb age calculation through a graphical method to obtain the reservoir forming age of the deep concave area of the continental disruption lake basin. According to the method, quantitative analysis of the reservoir forming time of the deep concave area of the continental fault lake basin is realized, and the correctness of reservoir forming time judgment is improved.

The invention discloses a volcanic rock reservoir saturation calculation method based on basin simulation paleo-pressure recovery, which comprises the following steps of: firstly, recovering paleo-pressure of hydrocarbon source rock in a target area by utilizing basin simulation and a fluid inclusion method, and calculating filling pressure of a reservoir in a reservoir forming period by combining hydrocarbon column buoyancy of an oil and gas reservoir and hydrostatic pressure of a stratum; then oil (gas) saturation of each capillary pressure sample is determined by using a filling pressure and core mercury injection experiment, and a nuclear magnetic resonance logging T2 cut-off value is calibrated; and finally, the oil (gas) saturation of the whole well section is calculated by using the calibrated nuclear magnetic resonance logging information. According to the method, the combined action of buoyancy filling and source rock overpressure in the volcanic rock reservoir formation process is comprehensively considered and used for mercury injection experiment data analysis, nuclear magnetic resonance logging information is calibrated through the core mercury injection experiment result to achieve reservoir saturation calculation, and the saturation evaluation accuracy of the volcanic rock reservoir is effectively improved.

To provide a method capable of easily estimating a position of a deepest part of a mineral vein in a short period.SOLUTION: A depth estimation method of a hydrothermal vein such as a hydrothermal vein-type gold deposit, includes the steps of: measuring a temperature of each of a plurality of fluid inclusions contained in quartz collected from different depths of a target vein under prescribed conditions, for example, by microthermometry to calculate a temperature and a salt concentration of hydrothermal water when the hydrothermal water is incorporated into the quartz; calculating a boiling curve representing a relation between a boiling point and a depth of the hydrothermal water having the salt concentration; and estimating a position of a deepest part of the target vein by collating the boiling curve with a relation curve between the temperature and the depth of the hydrothermal water using an ancient groundwater surface as a reference, under geological conditions including the target vein.SELECTED DRAWING: Figure 1

The invention provides an identification method for late formed rock corrosion of carbonate rocks. The method comprises the following steps: collecting a sampling sample from an underground rock core and a field outcrop sample; performing first observation treatment on the sampled sample to establish a sedimentary-diagenesis sequence, and preliminarily determining the type of the late diagenesis corrosion hole; performing second observation treatment on the sampled sample to identify the hydrocarbon inclusion state of the sampled sample; performing third observation treatment on the sampled sample to identify the uniform temperature and freezing point temperature of the gas-liquid two-phase fluid inclusion in the sampled sample; determining the content of main trace elements in the sampled sample; measuring the carbon and oxygen isotope value of the sampled sample; according to the sedimentary-diagenesis sequence, the type of the corrosion hole, the state of the hydrocarbon inclusion, the uniform temperature and freezing point temperature of the gas-liquid two-phase fluid inclusion, the content of main trace elements and the carbon and oxygen isotope value, the identification basis of late diagenesis corrosion of the carbonate rock is determined; the method is used for achieving the effect of improving the carbonate rock late formation rock corrosion identification efficiency.

The application discloses a kind of quantitative evaluation method and device of oil and gas along fault to river channel sand body filling capacity, first, according to fluid inclusion analysis, oil and gas reservoir forming period is identified, and oil and gas reservoir forming period and time are determined;Then, according to the result of seismic data interpretation, the configuration relationship of fault and hydrocarbon source rock is analyzed, and gas source fault is determined;Then, in combination with the configuration relationship of fault and sand body, its evolution and the recovery result of porosity evolution, and the historical data of porosity-permeability relationship, the filling capacity evaluation parameter of key reservoir forming period is obtained;Then, in combination with the relationship between filling capacity evaluation parameter and sand body gas content, the weight coefficient of different parameters on the influence of natural gas filling is determined, and then the filling capacity coefficient of each river channel sand body is calculated, so that the selective filling strength of oil and gas along fault to each river channel sand body is obtained.The application realizes the quantitative evaluation of oil and gas along fault to river channel sand body filling capacity, and based on the evaluation result, favorable gas-bearing river channel sand body can be further predicted.

The application provides a clastic rock gas reservoir paleo-pressure calculation method. Through analysis of test data of overburden porosity and formation compaction coefficient of sandstone samples in a test area, in combination with definitions of rock formation compaction coefficient and effective pore volume compression coefficient, a formula for characterizing pore volume change in a geological history period is established. The effective pore volume compression coefficient is calculated through measured data and a rock physical model, and then the change of the pore volume in each history period is obtained. When the reservoir is a dry gas or wet gas reservoir, the measured pressure and temperature of the present reservoir are taken as a starting point, in combination with a simulated formation thermal evolution history paleo-temperature curve, and then the reservoir paleo-pressure value in each history period is calculated. To some extent, the problem that the previous calculation method relies on microfluid inclusion observation and test and is difficult to continuously calculate the paleo-pressure in each history period is solved, which plays an important role in basin analysis and oil and gas accumulation dynamics research, and has important industrial application value in oil and gas exploration and evaluation.

This invention belongs to the field of geological and mineral survey technology, specifically involving a comprehensive survey system for the rubidium enrichment mechanism of metamorphic rocks based on micro-area in-situ technology. It includes a module for precise characterization of rubidium occurrence state through in-situ petrography, a module for multi-dimensional isotopic mass spectrometry combined with analysis, a module for quantitative inversion of rubidium migration and enrichment behavior, and a module for spatiotemporal coupling and mineralization prediction of multi-stage metamorphic events. These four modules adopt a dual-closed-loop coupling architecture. This invention achieves a significant improvement in spatial characterization accuracy and comprehensiveness, completely overcoming the limitations of existing two-dimensional characterization techniques. By establishing an X-Y-Z three-dimensional coordinate system through a three-dimensional spatial coordinate calibration unit, it achieves full-dimensional characterization of rubidium in the plane and depth directions of metamorphic rock samples. Combined with hierarchical chemical extraction and time-of-flight secondary ion mass spectrometry nanoscale surface scanning technology, it achieves for the first time precise decoupling of the three occurrence states of rubidium: lattice state, adsorption state, and fluid inclusion state, breaking through the technical bottleneck of traditional methods being unable to distinguish the occurrence states of rubidium.

The application discloses a pegmatite high-purity quartz purification method and a purity extraction evaluation method, wherein the purification method comprises the following steps: S1, selecting a quartz sample C from a pegmatite high-purity quartz sample collected from the field by means of naked eye observation, microscopic slice observation and whole rock analysis; S2, performing laser confocal Raman spectrum determination on the quartz sample C to obtain typical characteristic peak value data and lattice Al data of fluid inclusions in the quartz sample C, removing the quartz sample that does not meet the requirements based on the lattice Al data to obtain a quartz sample D; S3, performing fluid inclusion temperature measurement on the screened quartz sample D, and selecting a quartz sample E with a homogenization temperature less than 600 DEG C from the quartz sample D; and performing explosion on the quartz sample E to obtain a final purified product. The application also provides a purity extraction evaluation method for the pegmatite high-purity quartz. The application realizes purification of the pegmatite high-purity quartz and grading evaluation of the purified quartz.

The invention discloses a rock cross-cut rubidium deposit rubidium occurrence state and deposit cause analysis method and device and a medium, and belongs to the technical field of deposit cause analysis. A first strain mode sample and a second strain mode sample are distinguished based on divergence characteristics of strain space distribution, and a first-class rubidium occurrence horizon and a first-class enrichment mechanism are judged by utilizing a space lag relationship between an isotope fractionation peak position and a strain peak position; and judging a second-class rubidium occurrence layer and a second-class enrichment mechanism according to a rubidium concentration gradient mutation position around the fluid inclusion, and coupling an enrichment direction of a sample scale with a fracture structure or a permeable stratum to delineate a mineralization area. According to the method, the lattice position quantitative judgment of the rubidium occurrence state, the dynamic process distinguishing of the mineralization mechanism and the geologic structure constraint delineation of the mineralization area are realized.

The present application belongs to the technical field of determining the evolution period of strike-slip faults in the edge of craton, and particularly relates to a method for determining the evolution period of strike-slip faults in the edge of craton based on multi-source data analysis. Three-dimensional reflection seismic data, well logging data and core samples from multiple wells in the target area are collected, and the core samples are from Sinian, Cambrian, Permian and Triassic strata. The seismic data is interpreted to determine the seismic reflection layer and make a coherent attribute map and a time domain structure map, and the fracture plane distribution characteristics and profile structure style are analyzed. The petrology of the core samples is characterized, including scanning electron microscope observation, energy spectrum testing, cathodoluminescence microscope observation, identification of fracture filling characteristics, cutting relationship and diagenetic mineral filling generation, and fluid inclusion analysis of the fracture filling vein samples.

The invention discloses a method for acquiring paleopressure of a CO2-CH4 mixed gas inclusion through Fourier transform infrared spectroscopy. The method comprises the following steps: S1, preparing CO2-CH4 mixed gases with different components; s2, calibrating components of the mixed gas by gas chromatography; s3, Fourier transform infrared spectrograms of the mixed gas under different pressures are collected; s4, extracting a methane peak position, and establishing a quantitative model of the methane peak position, the pressure and the methane content; and S5, acquiring the Fourier transform infrared spectrogram of the natural CO2-CH4 mixed gas inclusion, extracting the methane peak position, calculating the methane content according to the peak area ratio, substituting the methane content and the methane peak position into the quantitative model, and calculating the paleopressure of the CO2-CH4 mixed gas inclusion. According to the method, the CH4-CO2 fluid inclusion quantitative model is established based on the Fourier transform infrared spectrum, the paleopressure of the related fluid inclusion can be determined, the method is also suitable for quantitative analysis in all laboratories, and errors caused by different laboratories are avoided.

The invention discloses a quantitative evaluation method and device for the filling capacity of oil gas to a river channel sand body along a fault, and the method comprises the steps: firstly, carrying out the recognition of an oil gas reservoir forming period according to the analysis of a fluid inclusion, and determining the oil gas reservoir forming period and time; according to the seismic data interpretation result, the configuration relation between the fault and the hydrocarbon source rock is analyzed, and a gas source fault is determined; then combining the configuration relation and evolution of the fault and the sand body, the porosity evolution recovery result and the historical data of the porosity-permeability relation to obtain the filling capacity evaluation parameters of the key reservoir forming period; and then combining the filling capacity evaluation parameters with the gas content relationship of the sand bodies, determining weight coefficients of influences of different parameters on natural gas filling, and further calculating the filling capacity coefficient of each river channel sand body, so as to obtain the selective filling strength of oil gas to each river channel sand body along the fault. According to the method, quantitative evaluation of the filling capacity of oil gas to the river channel sand body along the fault is achieved, and the river channel sand body with favorable gas content can be further predicted based on the evaluation result.

The invention discloses a magma-hydrothermal drive far-end ore deposit fluid migration path tracing method, and belongs to the technical field of geology and geochemistry, and the method comprises the following steps: S1, collecting geological data, and carrying out summary analysis; s2, performing field geological mapping and structural analysis on the typical fluid migration profile; s3, analyzing fluid inclusion and quartz in-situ trace elements in the quartz veins; s4, recovering the migration path of the ore-forming fluid; the magma-hydrothermal driven far-end ore deposit fluid migration path tracing method provided by the invention provides a solution thought for research on the fluid migration path of a far-end magma hydrothermal deposit.