44 results about "Fluid inclusions" patented technology

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 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 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 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.

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.

This invention discloses a method for deep removal of fluid inclusions from quartz sand using molten salt electrolysis, belonging to the field of quartz sand purification technology. This method uses vein quartz as raw material, which undergoes crushing, sieving, magnetic separation, and flotation followed by high-temperature calcination and ice-water quenching pretreatment to induce microcracks on the quartz sand surface. A molten salt electrolysis cell is then prepared under a dry nitrogen atmosphere using a nickel alloy as the cathode, graphite as the anode, and a lithium-based electrolyte salt as the electrolyte. The pretreated quartz sand is placed near the cathode and electrolyzed for 2-30 minutes using a 2-24V DC pulse voltage. The electric field causes dielectric breakdown and rupture of the fluid inclusions, driving the directional migration of impurity ions. Finally, the sand is washed with boiling water, leached with mixed acid, washed again, and dried to obtain high-purity quartz sand with a SiO2 purity of not less than 4N8. This invention solves the problem of removing tiny fluid inclusions using traditional methods through the synergistic effect of thermal explosion and molten salt electrolysis. It has low energy consumption, high purification effect, and the prepared high-purity quartz sand can meet the application needs of high-end industries such as semiconductors and photovoltaics.

The present invention discloses a method for correcting formation erosion using two-dimensional simulation, comprising: 1: restoring the formation erosion thickness during a typical tectonic movement period in a study area; 2: obtaining a plane contour map of the erosion thickness of the top surface of a typical structure in the study area, selecting a typical well, and obtaining the formation erosion thickness of each typical well during the typical tectonic movement period; 3: performing a one-dimensional oil and gas accumulation simulation on each typical well; 4: intercepting a two-dimensional seismic profile through the typical well and performing a two-dimensional oil and gas accumulation simulation to obtain a two-dimensional dynamic oil and gas accumulation evolution process map of the intercepted profile; 5: setting a virtual well, comparing its one-dimensional oil and gas accumulation simulation results with the fluid inclusion analysis results of the actual target layer in the study area, and if the results do not match, correcting the formation erosion thickness, and repeating steps 2-5 based on the corrected formation erosion thickness until the formation erosion thickness is accurate. The present invention effectively solves the technical problem that the existing technology cannot accurately calculate the formation erosion amount.

The present invention provides a method for calculating the paleopressure of clastic gas reservoirs based on the rock skeleton compression coefficient. By analyzing the porosity of rock samples at normal pressure, the rock skeleton compression coefficient under different effective stresses, and the whole-rock XRD test data, combined with the definition of the rock formation compaction coefficient and the rock skeleton compression coefficient, a formula is established to characterize the change in pore volume during geological history, thereby obtaining the change in pore volume during each historical period. When the reservoir is a dry gas or wet gas reservoir, the paleopressure of each historical period is calculated based on the current measured pressure and temperature of the reservoir and the paleotemperature curve of the simulated formation thermal evolution history. To a certain extent, this method solves the problem that the previous paleopressure quantitative calculation method relied on microscopic fluid inclusion observation and testing and was difficult to continuously calculate the paleopressure of each geological historical period. It can accurately calculate the paleopressure value of gas reservoirs, has stronger applicability and practicality, and can continuously calculate the paleopressure value of each historical period, and has certain industrial application value.

The invention discloses a stratum denudation thickness calculation method, which comprises the following steps: acquiring different-depth ground temperature data of a target stratum through a thermal advection coupling ground temperature field inversion model, extracting paleo-temperature data of a fluid inclusion in a rock core sample by using a fluid inclusion paleo-temperature scale denudation model, and determining paleo-ground temperature gradient change characteristics; processing mudstone porosity data by adopting a mudstone compaction curve dynamic fitting algorithm, establishing a dynamic relationship between the porosity and the buried depth, and optimizing a compaction curve; the data are input into a three-dimensional stratum denudation modeling analysis platform, a target stratum three-dimensional space structure model is constructed, modeling parameters are adjusted in combination with ground temperature gradient change and ancient ground temperature evolution characteristics, and the stratum denudation process is simulated; and finally, according to a simulation result and mudstone compaction degree parameters, calculating denudation thicknesses of different positions of the target stratum. According to the method, through cooperative application of multiple models and an algorithm, the accuracy of stratum denudation thickness calculation is improved.

The application discloses a metallogenic prediction method and device based on fluid parameters and fluid field modeling, a medium and a product, and relates to the field of metallogenic prediction. First, petrographic study is carried out on fluid inclusion samples of a target area to determine the metallogenic stage; the fluid inclusion samples of different metallogenic stages are analyzed and tested to obtain multiple fluid parameters; exploratory data analysis is performed on the multiple fluid parameters to screen out key fluid parameters closely related to the content of main ore-forming elements; a machine learning or deep learning algorithm is used to model the numerical relationship between the key fluid parameters and the main ore-forming elements to determine an optimal numerical model; the key fluid parameters are processed by using different spatial interpolation algorithms to establish a three-dimensional fluid field model; according to the three-dimensional fluid field model and the optimal numerical model, three-dimensional metallogenic prediction is carried out in combination with metallogenic geological elements to determine a prospecting target area; since the fluid parameters are introduced as prediction variables, the accuracy of metallogenic prediction is improved.

The invention discloses a superimposed basin multi-stage reservoir formation probabilistic identification method based on fluid inclusion and U-Pb dating coupling and a Bayesian network, and relates to the technical field of geological analysis, and the method comprises the steps: collecting and preprocessing basic data including fluid inclusion parameters, U-Pb isotope age of reservoir cement, hydrocarbon source rock data, tectonic activity periods and cover layer parameters; establishing a multi-dimensional geological database; and establishing a time-temperature coupling calibration model by utilizing an inclusion uniform temperature and U-Pb age matching equation, and calibrating paleo-temperature to reflect reservoir forming thermodynamic conditions. According to the method, the dynamic parameters of the fluid inclusion and the U-Pb dating technology are combined, accurate and quantitative recognition of the multi-stage reservoir forming process of the superimposed basin is achieved, the time-temperature coupling calibration model is constructed, the paleotemperature is calibrated to reflect the reservoir forming thermodynamic condition, the recognition error caused by a single data source in a traditional method is effectively avoided, and the recognition accuracy is improved. And the accuracy and the reliability of multi-stage reservoir formation identification are obviously improved.

The present invention discloses a method for analyzing the causes of abnormal pressure in high-temperature and high-pressure buried hills, comprising the following steps: determining the Raman spectrum, fluid inclusion homogenization temperature, burial history and thermal history map of methane inclusions in the high-temperature and high-pressure buried hill reservoir to be analyzed; determining the paleopressure at the time of methane inclusion capture, obtaining the inclusion capture time, and calculating the paleopressure coefficient at the time of capture; 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; restoring the pressure evolution history according to the numerical simulation model, tracking the pressure evolution characteristics of the hydrocarbon source rock, transport system and buried hill reservoir, and analyzing the causes of abnormal pressure in the buried hill in combination with parameters such as sedimentation rate, hydrocarbon generation rate and hydrocarbon generation amount, so as to effectively judge the causes of abnormal pressure in the high-temperature and high-pressure buried hill gas reservoir, with reliable results, and providing a reliable reference value for the exploration and development of this type of oil and gas reservoir.

The invention relates to a method for measuring the gas-liquid ratio of a fluid inclusion, which comprises the following steps: sample preparation: cutting a rock sample into temperature measuring sheets, polishing, and positioning a target fluid inclusion; sound tweezers are locked, wherein a standing wave sound field is generated by combining high-frequency sound waves with a piezoelectric transducer array and a holographic acoustic lens or phased array technology, and bubbles in the inclusion are locked; raman spectrum verification: before and after the acoustic tweezers are locked, scanning the inclusion by adopting a Raman spectrum technology, and verifying that the sound field operation does not cause phase change or component loss by comparing peak position offset; performing Raman three-dimensional CT scanning and deformation correction: performing layer-by-layer scanning on the inclusion by utilizing a Raman microscope, constructing three-dimensional component distribution information of the inclusion, analyzing and simulating the influence of sound radiation pressure on the bubble form through a finite element, establishing a relation model of bubble deformation and sound field intensity, and correcting an initial volume calculation result; and gas-liquid ratio calculation: calculating a gas phase volume, a liquid phase volume and a sub-mineral volume in combination with the corrected three-dimensional model.

The invention discloses a method, a device and equipment for determining the multi-stage crude oil filling time of a superimposed basin, and the method comprises the steps: carrying out the preliminary division of the crude oil filling periods of the superimposed basin based on the physical property parameters of hydrocarbon inclusions in rock samples corresponding to oil reservoirs in the superimposed basin; based on the burial depth and thickness of the current stratum, the burial type of the superimposed basin is recovered in a mechanical compaction correction mode; projecting the uniform temperatures of the saline water inclusions in different charging periods to a superimposed basin burial history by using a fluid inclusion method so as to obtain the possible time of crude oil charging in different charging periods; and determining the U-Pb geological age of the diagenetic mineral corresponding to the charging period in the rock slice sample based on a U-Pb dating test result of the diagenetic mineral corresponding to the charging period comprising at least two possible times of crude oil charging. And correcting the possible time of crude oil filling based on the U-Pb geological age of the diagenetic minerals and determining the multi-stage crude oil filling time of the superimposed basin.