66 results about "Rock tapaculo" patented technology

The invention discloses a rock permeability testing system in a high-temperature and high-pressure environment and a using method thereof, and belongs to the technical field of geothermal development or coal in-situ gasification mining. The test system is composed of a stress loading system, a test kettle assembly and a magnetic particle imaging system. When in use, the stress loading system and the test kettle assembly provide conditions such as high temperature, high pressure, seepage fluid and the like for a test piece; and detecting the spatial distribution state of the nano magnetic induction particles added in the seepage fluid through a magnetic particle imaging system to observe the pore and crack distribution characteristics in the test piece or detecting the nano magnetic induction particles added in the pollutant solution to observe the pollutant migration condition. The test system is scientific in design, simple in structure and easy to operate and maintain, can monitor pore fracture distribution and pollutant migration conditions in the test piece in real time under high-temperature and high-pressure conditions, provides accurate dynamic observation data, and provides important technical support for reservoir assessment and optimization in a complex environment.

The invention discloses a rock hydrogen generation potential prediction and evaluation method, system and equipment and a storage medium, and belongs to the technical field of hydrogen source rock evaluation. The method comprises the following steps: calculating the serpentine degree of rock in a research area according to the Fe < 3 + > / FeTot ratio of the rock in the research area and the relationship between the Fe < 3 + > / FeTot ratio of the rock and the serpentine degree; and predicting the hydrogen generation potential of the rock in the research area according to the serpentine degree of the rock in the research area and the relationship between the hydrogen generation potential of the rock and the serpentine degree. According to the method, the prediction of the hydrogen generation potential of the rock in the research area is calculated according to the Fe < 3 + > / FeTot ratio of the rock in the research area, the problem that the prediction and rating of the hydrogen generation potential of the rock in an area with low research degree and deficient basic data are difficult is solved, and more reliable basic data are provided for research on the hydrogen generation potential of the hydrogen source rock, hydrogen resource evaluation and the like.

The invention discloses a simulation method for inherent microfractures in rock based on a discrete element method, which comprises the following steps of: constructing a discrete element numerical model sample, performing static equilibrium calculation on the sample by adopting a linear model, applying fixed confining pressure to an initial sample, and performing servo calculation; a Flat-joint contact model is added, and contact bonding mesoscopic parameters are set for static balance calculation; modifying bonding contact into non-bonding contact, adding a contact gap and performing static balance calculation; carrying out a loading test; processing a test result to obtain mechanical parameters of the sample, comparing the mechanical parameters of the numerical model test with the mechanical parameters of the rock sample obtained by the indoor test, if the two mechanical parameters are matched, outputting the result, and terminating the simulation process, otherwise, modifying the contact bonding mesoscopic parameters. And reloading the test until the mechanical parameters of the numerical test are matched with the mechanical parameters of the indoor test. According to the method, the inherent micro-fracture in the rock is simulated, and the defects of a conventional model in a discrete element method are overcome.

The invention relates to the technical field of mineral analysis, and discloses a rock alternating temperature and pressure characteristic analysis method, system and equipment and a storage medium, a plurality of pressure values and a plurality of temperature values of a spherical cavity are obtained to simulate different actual environmental conditions, and a micro scanning electron microscope, an X-ray diffractometer and an X-ray fluorescence spectrometer are combined to simulate the temperature and pressure characteristics of the spherical cavity. The rock sample to be analyzed can be comprehensively tested and analyzed from multiple angles. Furthermore, the detector is used for collecting the test data set of the rock sample to be analyzed generated by the test, so that the automatic collection of the data is realized, and the test efficiency is improved. Finally, alternating temperature and pressure characteristic analysis is carried out through the data processing subsystem, and characteristic changes of the rock under different temperature and pressure conditions can be obtained. Therefore, by implementing the method, the rock sample to be analyzed is comprehensively tested and analyzed from multiple angles, the limitation that the conventional research method is single is overcome, and meanwhile, the obtained alternating temperature and pressure characteristic analysis result is more comprehensive.

The embodiment of the invention provides a method for displaying the content distribution of metal elements in rock based on a random forest, and can solve the technical problem that the extraction capability of geochemical elements is poor. The method comprises the following steps: confirming spectral data and metal element content of a sample, and preprocessing to obtain an effective wave band; re-sampling the effective wave band according to each sampling interval; establishing a first random forest model according to the resampling wave band and a one-leaving cross validation method, and confirming the optimal spectral width of the target element; based on the optimal spectral width, a second random forest model is established, and the element content value of the target element is obtained through inversion; performing interpolation processing on the element content values to obtain a prediction distribution diagram of the element content values; according to the element content actual measurement value of the target element, an actual measurement distribution diagram of the element content value is obtained through interpolation processing; and if the coincidence value between the predicted distribution diagram and the actually measured distribution diagram accords with a preset range, obtaining an abnormal region based on the predicted distribution diagram.

The invention discloses a method for constructing a rock dynamic damage constitutive relation under the freeze-thaw-load effect, and belongs to the technical field of rock damage, and the method comprises the following steps: determining a dynamic damage evolution equation based on evolution characteristics of a rock dynamic damage rate under the freeze-thaw-load effect and a macromechanical parameter change rule; the method comprises the following steps: abstracting a rock under the action of freeze-thaw-load into four parts, namely freeze-thaw damage, load-bearing damage, coupling damage and non-damage, bearing effective stress by the non-damage part, bearing residual stress by the damage part, and establishing a rock constitutive model based on a dynamic damage rate; freeze-thaw cycle and conventional triaxial compression tests of the red sandstone are carried out, and the rationality of the model is verified through test results. According to the method, the model is established in a mode of combining theoretical derivation and test verification, the goodness of fit between the obtained theoretical curve and the test curve is high, the mechanical behavior of rock freeze-thaw load damage can be well reflected, and theoretical guidance can be provided for design and construction of cold region engineering.

The invention discloses a karst reservoir geometric heterogeneity evaluation method based on a continuous coherence theory, and the method comprises the steps: obtaining a rock sample pore image through a tomography technology, converting the spatial distribution of a pore body into sphere cloud data, and constructing a Rips complex through the continuous coherence theory, the birth time and the death time of the topological features of the data set are captured, then the duration of the topological features is calculated and output to obtain a PD graph, and probability density function weighted average is applied to determination of the PD mass center; and then the complexity and heterogeneity of the reservoir pore structure are quantified and represented by calculating the mean value and variance of the duration, the higher the mean value and variance are, the higher the heterogeneity of the rock pore structure is, and the proposed heterogeneity quantitative index H verifies that the analysis index has reasonability. According to the method, the quantitative evaluation capability of the heterogeneity of the pore structure of the geological reservoir is improved, and assistance is provided for research and production in the field of karst reservoirs.

This invention relates to a method for characterizing the distribution of primordial water in rocks and its application. The method includes: preparing particles from fresh rock cores as fresh samples and particles from dried rock cores as dried samples; calculating the scattering length density of the rock to be tested based on the dried sample, and preparing a deuterated toluene contrast-matching fluid with the same scattering length density as the rock to be tested; immersing the fresh sample and the dried sample in the deuterated toluene contrast-matching fluid respectively to obtain immersion samples; performing small-angle neutron scattering (SANS) experiments on the dried sample and the immersion samples respectively; obtaining pore structure information before and after immersion based on the experimental results; and determining the distribution of primordial water in the rock to be tested based on the pore structure information. This invention, based on SANS experiments, provides a novel experimental technique for characterizing the distribution and water saturation of primordial water in sedimentary rocks, with advantages such as being non-destructive, efficient, time-saving, and highly accurate.

The invention discloses an exposed high and steep slope microtopography reconstruction method for improving vegetation colonization ability, which comprises the following steps: screening rocks with high weathering sensitivity, and establishing a weathering rate quantitative evaluation model; the weathering process of the rock with high weathering sensitivity is accelerated; constructing a micro-topographic space; based on the micro-topographic space, designing a three-stage compound matrix through the nutritional defects of the weathered product of the high-weathering-sensitivity rock, and carrying out layered fusion on the three-stage compound matrix and the micro-topographic structure; and carrying out vegetation planting and weathering-growth synergistic maintenance. According to the method, permeation of a weathering agent is guided through preset cracks, rock is converted into a nutrient matrix through an enhanced weathering technology, and the problem that traditional physical transformation depends on an external matrix and is prone to being deficient in the later period is solved; according to the method, the climate areas are graded, different treatment is conducted on the different climate areas according to the grading result, the water retention rate of the arid area is increased, the drainage efficiency of the wet area is improved, the overall structure is still stable when the gradient is larger than 60 degrees, and the gradient limitation of vegetation bags is broken through.

The present invention discloses a method and system for predicting the tensile strength of layered rock masses based on the Brazilian splitting test, which relates to the technical fields of rock mechanics and geotechnical engineering, and includes: performing Brazilian splitting tests on multiple groups of shale disc specimens with different bedding dip angles respectively to obtain initial experimental data; calculating the theoretical tensile strength based on the principle of the Brazilian splitting test; performing normalization processing on the initial experimental data and the theoretical tensile strength to obtain the experimental data after preprocessing; constructing a target relationship between the dynamic increase factor and the relative strain rate based on the experimental data after preprocessing; constructing a dynamic fracture pressure model based on the dynamic strength criterion of layered rock masses based on the target relationship and a preset static layered strength criterion to predict the tensile strength of layered rock masses. The present invention can not only perfectly fit the strength characteristic that the strength of layered rocks first decreases and then increases with the increase of the bedding dip angle, but also predict the dynamic tensile strength of layered rock masses within a certain strain rate range.

The invention discloses a device and a method for testing anisotropic mechanical properties of strong heterogeneity rocks, the device comprises a rotatable rock sample fixing device, a workbench and a sliding track, and a scratching cutter control and data monitoring system, the workbench and the sliding track device main body are fixed on a table top and are convenient to support and move; the slidable scratching system moving track supports the slidable scratching system to move left and right; the rotatable rock sample fixing device is located on the left side above the table top and can fix the position of a rock sample and change the rock scratch angle. The scratching tool control and data monitoring system is located on the right side of the table top and connected with the sliding rail, the slidable scratching system can scratch rocks, and the data monitoring system can monitor and collect tangential force data borne by a tool bit and displacement data of the tool bit in real time; the device and the method for testing the anisotropy of the shale based on the scratches can be researched so as to judge the anisotropy mechanical property of the strong heterogeneity rock.

The invention provides an efficient rock heat conductivity coefficient test device and test method for simulating a natural confining pressure environment, the test device comprises an upper computer, and also comprises a confining pressure loading system and a test measurement system, and the confining pressure loading system and the test measurement system are arranged up and down and are controlled by the upper computer. An efficient and accurate test method can be provided for simulating the change rule of the heat conductivity coefficient of the rock in the natural stress environment, the confining pressure loading system is designed and adopted, true triaxial confining pressure can be applied to the sample, and the stress environment where the natural rock mass is located is simulated; the confining pressure loading system comprises four confining pressure loading bins, four samples can be measured at the same time, the test efficiency is improved, and a contrast test is formed; the heat conductivity coefficient of the sample is tested by adopting an optical scanning technology based on a moving point heat source principle, the test speed is high, and the precision is high; the test requirements can be met when the cubic test piece is small in height difference of a test surface and the size is larger than that of a scanning channel.

The invention relates to the technical field of deep rock mechanics, and provides a deep in-situ environment rock parameter acoustic electromagnetic fidelity test system and method.The deep in-situ environment rock parameter acoustic electromagnetic fidelity test system comprises a cabin, a test space is formed in the cabin, and a rock core sample enters the test space from one end of the cabin through a displacement unit; the temperature and pressure control unit is communicated with the cabin body and is used for adjusting the temperature and the pressure in the cabin body to reach target values and keeping the target values stable; the acoustic electromagnetic testing module is arranged in the cabin body and used for calculating the wave velocity, the resistivity and the apparent resistivity of the rock core sample, and the acoustic electromagnetic testing module is connected with an external acoustic electromagnetic data acquisition system; and the remote control system is electrically connected with the acoustic electromagnetic test module and the temperature and pressure control unit. According to the method, the original occurrence state of the rock can be restored in a fidelity manner, the physical and mechanical parameters of the rock in a deep in-situ real environment are tested and analyzed, the evolution law of the physical and mechanical parameters along with the deep environment is analyzed, and reliable data support is provided for revealing the constitutive relation, the failure mechanism and the disaster breeding mechanism of the deep rock mass.

The invention discloses a layered lithology identification method and device and a storage medium, and relates to the technical field of petroleum engineering. The method comprises the following steps: clustering basic categories into a plurality of macroscopic categories according to lithology similarity of rock basic categories; determining the macroscopic category of the rock of which the lithology is to be identified according to the category features of the macroscopic category; in the category features of the macroscopic category, determining the distinguishing features of the basic category under the macroscopic category; according to the parameter relationship of the distinguishing features of each basic category, obtaining the recognition features of each basic category; and in the macroscopic category, determining the basic category of the rock of which the lithology is to be identified according to the identification features of the basic category. According to the method, after rocks are classified and recognized through macroscopic categories with high accuracy and recall rate, hierarchical recognition of basic categories is performed on the rocks through recognition features with large differences; and through classification identification and hierarchical identification, the identification precision of the rock lithology is obviously improved.

The present invention discloses a system and method for measuring the in-situ gas diffusion coefficient and permeability of rocks. The measurement system includes: a diffusion and permeability measurement unit, which includes: a gas cylinder assembly, including a first target gas cylinder, a reference gas cylinder and a second target gas cylinder connected in parallel with each other; a first diffusion chamber and a second diffusion chamber, the first end of the first diffusion chamber is connected to the first output node, and the second end of the first diffusion chamber is connected to the input port of the high-temperature and high-pressure reactor; the first end of the second diffusion chamber is connected to the second output node, and the second end of the second diffusion chamber is connected to the output port of the high-temperature and high-pressure reactor; a gas chromatograph, configured to detect the gas content and composition information connected thereto; and a pressure difference sensor, configured to detect the pressure difference between a fourth common node and a fifth common node.

This invention relates to an impact-type Brazilian rock splitting and in-situ observation experimental apparatus and method, comprising a frame, lifting mechanism, impact hammer, spring, externally threaded iron bar, synchronous motor, upper vise, lower vise, piezoelectric force sensor, charge amplifier, computer, CT scanning device, infrared heater, infrared thermometer, inlet valve, outlet valve, and gas cylinder. The piezoelectric force sensor is connected to the computer via the charge amplifier for real-time acquisition, recording, and analysis of dynamic load signals during the splitting process. The chamber integrates a miniature CT scanning device, infrared heating and temperature measurement device, and protective atmosphere pipeline, enabling in-situ, non-destructive scanning imaging of rock samples before and after the experiment under controlled conditions. This invention obtains dynamic mechanical parameters and failure evolution images of rocks while efficiently and stably splitting rock cores, providing an integrated scientific research device for studying the dynamic failure mechanism of rocks under complex conditions, combining efficient loading, environmental simulation, and real-time observation.

The invention provides a method and device for measuring the cuttable property of rock and a tunneling machine, and relates to the technical field of rock tunneling, and the method comprises the following steps: obtaining the invasion force and the invasion depth of the rock to be measured; obtaining a rock invasion change curve according to the invasion force and the invasion depth; and calculating according to the rock invasion change curve to obtain cutting force and cutting specific energy consumption, and determining the cuttable property of the rock to be tested according to the cutting force and the cutting specific energy consumption. According to the method, more accurate rock strength parameters can be obtained by measuring the invasion force and the invasion depth of the rock, meanwhile, the cutting force and the cutting specific energy consumption are directly predicted based on the rock strength parameters through an established mathematical model and an empirical formula, the influence of personal errors and experimental conditions is reduced to a certain extent, and the method is suitable for large-scale popularization and application. Therefore, the test speed is improved. By accurately calculating the two parameters of the cutting force and the cutting specific energy consumption, the cutting performance of the rock can be more accurately tested, and the test accuracy is effectively improved.

The invention relates to the technical field of oil and gas development, and discloses an experimental device for simulating the heterogeneous migration and fractionation of oil and gas under geological conditions, comprising a bottom plate, a height adjustment mechanism is provided on the bottom plate, the height adjustment mechanism is used to adjust the height of a simulated warehouse pipe, the height adjustment mechanism is connected to an angle adjustment mechanism, the angle adjustment mechanism is used to adjust the angle of a rotating frame, a connection adjustment mechanism is provided on the rotating frame, the connection adjustment mechanism is used to adjust the connection relationship between warehouse pipes, the connection adjustment mechanism is connected to a clamping mechanism, and various types of lithology rocks are filled in parallel to achieve synchronous simulation of the migration and fractionation effect of oil and gas in different rock formations; a multi-fluid quantitative collector is used to achieve full-component collection of oil, gas and water after migration and fractionation; and accurate temperature and pressure control of the simulation system is used to simulate the heterogeneous migration and fractionation effect of oil and gas under different geological environments.

The invention relates to the technical field of geological exploration equipment, and discloses a bionic geological hammer based on bird tail mantis shrimp jaw feet, which is used for knocking an underwater geological structure and comprises a submarine with a containing cavity; a first driving motor is fixedly connected into the accommodating cavity; the supporting arm is fixedly connected with the exterior of the submarine; the interior of the supporting arm is of a hollow structure, and the interior of the supporting arm communicates with the containing cavity. The rotating part is fixedly connected with the supporting arm; the first driving motor is in transmission connection with the rotating part; one end of the elastic arm is fixedly connected with the supporting arm, and the other end of the elastic arm is fixedly connected with a hammer head; the output end of the rotating piece can rotate to enable the elastic arm to be bent and deformed. And the situation that the rock is knocked by hand waving can be avoided, and the arm syndrome of a worker is avoided.

The invention relates to the technical field of rock water absorption testing, in particular to a testing device for monitoring the real-time water absorption amount of rock and an application method of the testing device. The test device comprises a test bed, a bearing assembly, a water container, an electronic scale and pressurization equipment, the bearing assembly comprises a sleeve and a pull rope, the rock sample is placed in the sleeve, the sleeve has water permeability, the upper end of the pull rope is connected to the test bed, and the lower end of the pull rope is connected with the sleeve; the water container is placed on the electronic scale, water is injected into the water container, the sleeve is placed in the water container and does not make contact with the water container, and the rock sample is completely immersed in the water; the pressurizing device is used for pressurizing water in the water container, and the electronic scale monitors the weight change in real time. The problems that in a traditional water absorption test, water absorption amount data cannot be continuously and automatically collected in real time, the whole water absorption process cannot be dynamically monitored, weak rock easy to disintegrate cannot be tested, and the water pressure environment borne by the rock cannot be simulated and regulated and controlled are solved.

The invention discloses a rock constitutive characteristic VG model parameter solving method, which comprises the following steps: S1, placing a rock sample soaked in water on a flat test bed, keeping the surface of the rock in a saturated state all the time by supplementing water, wiping the surface at set intervals, weighing, and calculating the mass increment of the rock sample; s2, converting the mass increment of the rock sample into the volume delta V of water, solving to obtain the depth change delta zf of the wetting peak according to the sectional area S of the rock and the measured porosity epsilon, measuring a plurality of groups of data, fitting a Greep-Ampt model according to the data, and solving to obtain the matrix suction Sfi of the wetting peak of the rock under the water content; s3, i equations and four unknown quantities m, n, l and alpha are obtained; solving the equation set to obtain VG model parameters; according to the method, the parameters of the Green-Ampt infiltration model are measured, and the parameters of the Van-Genuchten model are indirectly solved by utilizing the conversion relation between the parameters and the parameters of the VG model, so that the soil-water characteristics of the rock are obtained.

The present invention discloses a thermal-mechanical coupling loading test system for a rock Brazilian disc specimen, which includes an installation frame. A pressure bar assembly penetrates through the top of the installation frame, and a cushion bar is installed at the bottom of the pressure bar assembly. Two heating components are slidably installed on the bottom surface of the installation frame, and the two heating components are symmetrically arranged. The specimen is installed between the two heating components; specimen clamping components are provided on both the left and right sides of the heating components. The specimen clamping components penetrate through the side walls of the corresponding installation frame. Installation boxes are provided on both the left and right sides of the installation frame, and a transverse turbine damping device matching the specimen clamping components is provided in the installation boxes; a laser detector is also installed on the inner side wall of the installation frame, and the laser detector corresponds to the top of the specimen. The present invention can solve the technical difficulties in the prior art that the rock Brazilian disc specimen cannot be effectively positioned, the temperature field cannot meet the preset temperature requirements, and the heating device interferes with the mechanical loading device, and is convenient to operate and has a relatively high test accuracy.

The invention discloses a decision tree determination method, a subsea tunnel surrounding rock impermeability grading method and a product, and relates to the technical field of subsea tunnel surrounding rock impermeability grading, the determination method comprises the following steps: obtaining training data of a tunnel section; the training data comprises surrounding rock parameter data and corresponding impermeability level data; the surrounding rock parameters comprise the rock covering layer thickness, the water head height, the rock uniaxial saturated compressive strength and the surrounding rock volume joint number; classifying the training data by adopting a dichotomy to obtain a plurality of division points and corresponding division results; calculating the information gain of each division point in combination with an information gain criterion; and selecting the division point with the maximum information gain and the corresponding division result, respectively taking two data sets in the division result as training data, and repeatedly executing the steps to obtain the decision tree for impermeability grading. According to the method, surrounding rock impermeability grading can be accurately carried out, surrounding rock impermeability grading is simple and visual, and rock mass impermeability can be objectively reflected.

The present invention belongs to the field of geophysical exploration data processing and interpretation technology, and specifically discloses a method for evaluating reservoir oil content by using complex resistivity response, comprising the following steps: S1, establishing a rock complex conductivity model taking into account pore wettability; S2, using observed electromagnetic response to obtain complex conductivity characteristic parameters of the rock formation to achieve quantitative evaluation of reservoir oil saturation. The established relationship model between reservoir oil saturation and complex conductivity parameters can be used to jointly identify the oil content of the reservoir using the resistivity and electrical susceptibility parameters of the reservoir, so as to reduce the multiple solutions of interpretation based solely on resistivity anomalies, and greatly increase the reliability of reservoir fluid identification.

The invention relates to the technical field of rock mechanics, in particular to a real-time measurement and prediction device and method for thermal expansion force and deformation of high-temperature rock. The real-time measurement and prediction device comprises a base, a computer control system and a prediction machine. The high-temperature-resistant resistance stress ring, the differential axial extensometer and the differential circumferential extensometer upload measured data to the resistance-type strain tester in real time, the resistance-type strain tester synchronously transmits the received data to the computer control system, and the computer control system transmits the collected data to the prediction machine. The prediction machine extracts predictive characteristics in various data, a prediction result is output to the computer control system through the prediction model, the computer control system calculates the thermal expansion force and deformation of the rock in real time based on the prediction result, by adopting the structure, the thermal expansion force and deformation of the rock can be automatically, synchronously and accurately measured in real time in a real high-temperature environment, and the rock thermal expansion force and deformation measurement accuracy is improved. And large difference between a measurement result and an actual working condition is avoided.

The present invention relates to the technical field of oil and gas field development, and discloses a method for evaluating the mobility of crude oil in rocks. The method comprises the following steps: (1) measuring the nuclear magnetic resonance T of a plurality of fluids in the rocks; <subgt;1< / subgt;‑T<subgt;2< / subgt;谱;(2)将所述岩石进行离心,测量离心后的岩石中流体的核磁共振T<subgt;1< / subgt;‑T<subgt;2< / subgt;谱;(3)将离心前后的岩石中流体的核磁共振T<subgt;1< / subgt;‑T<subgt;2< / subgt;谱对比,计算所述岩石中原油的可动性;(4)接着对所述岩石进行洗油处理,然后测量所述岩石的物性参数,分析所述岩石中原油的可动性和物性参数的关系,并进行拟合得到关系曲线;(5)测量待测岩石的所述物性参数并根据所述关系曲线判断所述待测岩石中原油的可动性。本发明的技术方案能够解决传统地下取心技术中原始油水分布易受干扰的问题,提高原油可动性测量准确性。

The invention relates to the technical field of geological survey, and provides a method for quantitatively evaluating the diffusivity of gas in rock, which comprises the following steps: under the conditions of target temperature and pressure, introducing a gas a with a preset molar weight into a first diffusion chamber positioned on one side of a rock sample, introducing a gas b with a preset molar weight into a second diffusion chamber positioned on the other side of the rock sample, at least one of the gas a and the gas b is gas to be detected; detecting the molar weight of the gas b diffused into the first diffusion chamber and the molar weight of the gas a diffused into the second diffusion chamber at set time intervals; and determining the diffusion index of the to-be-detected gas based on a pre-constructed diffusion index model and the molar concentration change condition of the gas a and the gas b between the first diffusion chamber and the second diffusion chamber. According to the technical scheme, the diffusivity of the gas in the rock can be more objectively, scientifically and quantitatively represented, and reliable geological theoretical data is provided for the sealing performance of a cover layer in a resource gas reservoir and gas storage medium evaluation.

The invention discloses a rock deformation characteristic testing device and method under a controllable periodic confining pressure impact condition, and belongs to the field of ocean rock mechanical parameter measurement, the rock deformation characteristic testing device comprises a water tank, the water tank is internally provided with a base located at the bottom of the water tank, and the base is used for bearing a rock sample; the strain gauge is arranged on the surface of the rock sample and is used for measuring a strain signal; the axial compression rod is arranged at the upper end of the rock sample and used for applying an axial load to the rock sample, and an acoustic emission probe is arranged in the axial compression rod and used for detecting an elastic wave signal of the rock sample; the scale guide rail is vertically arranged, the bottom of the scale guide rail is fixed to the water tank, a confining pressure impact component is slidably arranged on the scale guide rail, a lifting controller is arranged on the scale guide rail and used for controlling the confining pressure impact component to ascend, and the confining pressure impact component simulates confining pressure impact of sea waves on the rock sample through free falling into water; and the data collection and control device is used for receiving the elastic wave signal and the strain signal. According to the method, the real restoration of the rock multi-field coupling mechanical behavior in the marine environment is realized.

The invention belongs to the technical field of petroleum and natural gas exploration and development, and discloses a tidal waterway earthquake multi-attribute description method and device under the gypsum salt-carbonate rock symbiosis background. According to the method, rock physical parameters are calibrated based on logging data, a parameterized model is established for forward modeling, and the seismic recognition lower limit of a tidal passage is quantitatively determined; adaptive optimization and multi-dimensional fusion are carried out on various seismic attributes by using an integrated learning model, and fine and reliable identification of the tidal tract is realized; in combination with a tidal tract-mudstone shielding reservoir forming mode, favorable lithologic traps are screened and quantitatively evaluated from identification results; the oil-gas possibility is verified through well drilling, and the model is driven to be continuously optimized by actually measured geological data feedback. According to the method, the influence of interference factors such as faults is effectively inhibited, the continuity and boundary definition of tidal passage display are improved, and hidden lithologic trap identification is successfully guided.

This application provides a sampling system and application for rock geological environment management, including sampling tool components. This application uses electromagnetic control to direct the magnetic poles of a third electromagnet. When the magnetic poles of the third electromagnet are opposite to those of a fourth magnet, a repulsive force is generated between the third electromagnet and the fourth magnet, pushing the fourth magnet away from the third electromagnet. This, in turn, drives a second gear to rotate via a first toothed plate, which in turn drives the first gear to rotate. The first gear then moves the second toothed plate, pushing out a second arc-shaped toothed plate. The second arc-shaped toothed plate engages with a fixed tooth to fix the fixed tooth.