28 results about "Laboratory experiment" patented technology

This invention provides a method, system, and storage medium for determining the blasting time interval in open-pit mines. The method includes: determining the disturbance frequency that has the greatest impact on pore water pressure in soil and rock mass based on field monitoring and laboratory experiments, simulating extreme and dangerous working conditions; dynamically disturbing the sample based on this frequency, judging the consolidation state according to the pore pressure dissipation and creep rate after disturbance, and recording the stable consolidation time T when the conditions are met, obtaining time series at different blast center distances; performing a secondary disturbance after time T, quantitatively evaluating the consolidation effect based on the changes in peak pore pressure and permeability coefficient before and after the secondary disturbance; judging and correcting time T based on the evaluation results, and finally determining the safe time interval for macroscopic blasting operations. This invention can simultaneously consider pore pressure dissipation and soil skeleton deformation, accurately identify the consolidation state and structural damage of soil and rock mass, and provide a scientific and safe basis for time interval decision-making for high-frequency blasting operations in open-pit mines.

The utility model relates to the technical field of experimental equipment, in particular to a support for laboratory experimental operation, a plurality of bottom rings and top rings are arranged at the upper end of a bottom plate, the top rings are located above the bottom rings, second clamping grooves are formed in the inner walls of the top rings and the inner walls of the bottom rings, second springs are arranged in the second clamping grooves, and the second springs are arranged in the second clamping grooves. A second clamping block is arranged at one end of the second spring, and through cooperation of the second clamping block and the second spring, the device can adapt to test tubes with different diameters; through cooperation of a third clamping block, a third spring and a third clamping groove, the height of a top ring can be adjusted to adapt to test tubes with different heights, the storage capacity of the test tube support for the test tubes with different specifications is greatly improved, and the applicability is higher.

The invention discloses an intelligent control system based on a laboratory and an animal laboratory, and relates to the technical field of intelligent laboratories, and the system comprises a sensing device which comprises a visual module and an environment information collection module; the vision module covers a laboratory experiment area and an animal feeding area, and the environment information acquisition module is used for acquiring laboratory indoor and animal feeding environment parameters; the central control center establishes data connection with the sensing equipment and at least two basic equipment in the laboratory; the central control center is configured to obtain detection data fed back by the sensing equipment; performing preset emergency judgment analysis according to the detection data to obtain a judgment result; identifying the functions of the basic equipment which establishes the connection, and searching a pre-established database to obtain a matched linkage control scheme in combination with a judgment result; and acquiring real-time operation data fed back by the basic equipment, loading the linkage control scheme, and controlling the basic equipment to respond. According to the invention, the collaboration between laboratory public infrastructures is improved.

The application discloses a kind of multi-station collaborative flow line type ability verification sample online distribution method and system, specifically 1, for each sample preparation mark is made;2, sample is evaluated;3, laboratory mark is set and is associated with laboratory;4, laboratory sets sample combination and is associated with distribution number;5, for laboratory allocation sample and for the sample associated with distribution number of allocation;6, sample associated with distribution is packed express delivery.The application avoids the situation that ability verification sample is sent wrong or wrong mark, provides solid data support for sample traceability, and guarantees confidentiality and impartiality.

The utility model relates to the technical field of concrete production, in particular to a concrete experiment stirring device which comprises a concrete experiment stirring mechanism, and the concrete experiment stirring mechanism comprises a first fixing plate, a supporting column, a supporting base, a movable pulley, a first feeding device and a second feeding device. When the equipment is operated, the concrete storage bin is filled with concrete needing to be mixed, the putting amount of the concrete is set, the concrete is put into the detachable stirring bin, the concrete is stirred through the stirring plate, and the concrete is taken out from the stirring outlet after stirring is completed; the concrete experiment stirring mechanism has the advantages that the concrete experiment stirring mechanism is more convenient to maintain and clean due to the fact that the detachable stirring bin is assembled, the detachable stirring bin can be detached for thorough cleaning after each time of concrete stirring is finished, and the concrete experiment stirring mechanism is more convenient to clean. And mixture residues among different experiments can be avoided.

The invention belongs to the technical field of oil and gas field development, and discloses a method for determining the lower limit of the CO2 content in CO2 flooding development reinjection gas, which comprises the following steps: S1, investigating the CO2 content range in the block output gas; s2, designing gas reinjection schemes with different CO2 contents; s3, through a crude oil component model / indoor test, MMP after the reinjection gas with different CO2 contents is in contact with the in-situ crude oil is obtained; s4, drawing an intersection by taking the CO2 content as an x axis and MMP as a y axis; and S5, analyzing to obtain the lower limit of the CO2 content when the reinjection gas is in contact with the in-situ crude oil to achieve a mixed phase. According to the method, the process of judging whether the produced gas containing CO2 can be used as the reinjection gas or not is systematically elaborated on the basis of actual data of the mine field in a numerical simulation or indoor experiment development mode, the judgment hysteresis in the mine field practice process is eliminated, the problem that CO2 is used as a newly-developing large thermal oil displacement medium but is insufficient in experience is solved to a certain extent, and the method is suitable for popularization and application. And a new thought is provided for treating CO2-containing output gas in a subsequent mine field.

This invention discloses a design method for profile control systems and performance indicators, including establishing an application template for the profile control system; initially selecting the type of profile control system; determining the profile control system; determining the profile control system indicators; and optimizing the profile control system product. The method of this invention is applicable to the design of profile control systems and performance indicators for all oilfields. The method is universal and helps to standardize the design process and improve design quality. This invention organically combines laboratory experiments with field practice, making the design more able to meet the requirements of field reservoir applications, and also contributing to the timely summarization and improvement of profile control technology.

The utility model discloses a laboratory quantitative infusion control system, and relates to the field of laboratory experiments, the laboratory quantitative infusion control system comprises a base, a supporting rod is fixed on the base, a supporting block is arranged on the supporting rod, a stirring motor is fixed on the supporting block, a plurality of quantitative pumps are arranged on the stirring rod, and the quantitative pumps are arranged on the stirring rod. A plurality of metering pumps are arranged on the base, a lifting adjusting mechanism is arranged between the metering pumps and the supporting block, a water bath kettle is fixed on the base, a stirring tank is arranged in the water bath kettle, and a water bath adjusting mechanism is arranged between the stirring tank and the water bath kettle. The stirring tank is supported by the water bath adjusting mechanism, then the height of the supporting block is adjusted by the lifting adjusting mechanism, the stirring rod extends into the stirring tank, and then the height of the metering pump is adjusted by the lifting adjusting mechanism, so that the stirring rod can conveniently adapt to stirring tanks with different depths, and the metering pump can adapt to the height of the stirring tank.

A constitutive model and parameter calibration method for permafrost considering temperature and time effects are proposed, including: construction of the basic model framework; laboratory experiments and construction of core equations; construction of elastoplastic constitutive relations; construction of stress-strain relations considering temperature and time effects; and inversion calibration of model parameters. Through the progressive and synergistic implementation of the above steps, this method realizes a systematic R&D process from theoretical framework to experimental verification and then to parameter calibration, effectively solving the problem of modeling the complex mechanical behavior of permafrost under the coupled effects of temperature and time.

The utility model discloses a liquid adding device, relates to the field of laboratory instruments, and aims to solve the problem that the surface flatness of an adsorbent column is damaged due to traditional direct liquid adding. According to the liquid adding device, a first flow guide component comprises a connecting pipe with one end leading in liquid and a drainage piece, the drainage piece is arranged in the connecting pipe, a circulation gap is formed between the drainage piece and the inner wall of the connecting pipe, and the drainage piece is used for draining the liquid to the circulation gap to flow out; one end of the second flow guide part is communicated with the other end of the connecting pipe, the second flow guide part is a hollow cylinder with a conical inner wall close to one end of the connecting pipe, and the other end of the second flow guide part is close to the inner wall of the chromatographic column and enables liquid to flow out along the edge of the bottom end. After being poured, liquid falls to the drainage piece along the connecting pipe and is blocked by the drainage piece, and downwards flows to the conical surface of the second flow guide part from the circulating gap by clinging to the inner wall of the connecting pipe, so that the speed of the liquid flowing to the edge of the bottom end of the second flow guide part is slowed down, and the damage to the surface flatness of an adsorbent column caused by the liquid flowing into the chromatographic column after liquid adding is reduced.

The present application relates to the technical field of oilfield production engineering, and particularly relates to a wellbore plugging agent evaluation method and a wellbore sealing integrity evaluation device. The present application mainly solves the problem that the existing wellbore plugging agent evaluation method cannot evaluate the performance of the plugging agent under the working conditions of high pressure, high CO2 and other acid gas wells. The present application comprises the following steps: selecting a plurality of plugging agents with different formulations according to the working conditions of the experimental area, and respectively performing basic performance testing, injection performance testing, interfacial cementation strength evaluation and corrosion performance evaluation; performing long-term corrosion resistance experiment on the plugging agent; and using the wellbore sealing integrity evaluation device to perform full-size wellbore sealing integrity evaluation experiment on the plugging agent. The wellbore plugging agent evaluation method optimizes different plugging agents through laboratory experiments, and simulates the actual production conditions through full-size experiments, so as to finally screen out the plugging agent that meets the field working conditions, thereby providing guarantee for efficient treatment of gas wells.

This invention relates to a safe handling, fixing, and physiological measurement device for facilitating the fixing of a mouse / rat used as a laboratory animal in experiments and enabling precise measurements to be made during laboratory experiments, characterized in that it comprises: body (7) made of transparent material to allow easy observation of laboratory animal movements from the outside, ventilation holes (7.1) formed to facilitate blood collection at the desired area, an outer cover (1) which can be opened and closed upwards to prevent the mouse / rat from escaping, an inner cover (2) that provides the clamping action necessary to fix the laboratory animal, a fixing mechanism (4) that prevents movement of the head of the laboratory animal, a rail (6) that allows the inner cover (2) and the fixing mechanism (4) to move up and down in a vertical direction, a sensor system (5) that enables accurate measurement of physiological parameters and wireless transmission of data.

This invention relates to an indoor experimental apparatus and method for optimizing the structure of a bottom-hole alternating flow field generator. A lifting device is fixed at the center of the top of the test frame, and a top drive device is suspended at the lower end of the lifting device. A drill pipe is connected to the lower end of the top drive device, and a pulse generator and a PDC drill bit are screwed onto the lower end of the drill pipe. A transparent return channel is located below the PDC drill bit. The drain outlet of the transparent return channel is connected to a vibrating screen via a drain pipe and a drain valve. The vibrating screen is fixed above the mud tank. The inlet pipe of the mud pump is inserted into the lower part of the mud tank, and the outlet of the mud pump is connected to a high-pressure manifold. The outlet of the high-pressure manifold is connected to the inlet of the top drive device. A rock sample is placed below the PDC drill bit and fixed in the transparent return channel. Drilling mode experiments are conducted first, followed by bottom-hole flow field characteristic testing mode experiments to evaluate the performance of the pulse generator. This invention obtains the pulse jet-assisted rock-breaking effect under different parameters through experiments, which is beneficial for structural optimization and improving drilling speed.

Techniques of the present disclosure relate to validating data for a composition design. A method comprises applying a machine learning model to at least two inputs comprising parameters of a cement composition and experimental conditions such that the machine learning model outputs at least one predicted property of the cement composition; performing a laboratory experiment to determine at least one experimental property of the cement composition; calculating an error between the at least one predicted property and the at least one experimental property; and recording the experimental data in a cement property database if the error is within an error range or repeating the performing the laboratory experiment if the error is outside the error range.

This invention discloses a perfluorohexanone (PFH) fire extinguishing performance testing system and method, comprising a PPH storage tank and a laboratory. The PPH storage tank is located outside the laboratory and is connected to the laboratory via a pipeline. An oil pan is located in the center of the laboratory to simulate a fire source. A thermocouple tree is connected to the upper side of the oil pan to measure the temperature at different flame heights. Multiple first thermocouples are installed at different heights on the side walls of the laboratory to measure temperature changes at different heights. Nozzles are detachably connected to the ends of the pipelines. The nozzles are evenly arranged at a designed spacing, and the spray coverage of the nozzles completely covers the protected area of ​​the laboratory. A high-definition camera and a thermal imaging camera are installed in the laboratory. This invention can monitor the fire extinguishing performance of PPH under different spray pressures and nozzle types, and the test data is accurate.

The application discloses a kind of simulation methods of carbonate rock pore retention mechanism under super deep thermal fluid-solid coupling, it is related to rock physics technical field.The application is prepared by preparing carbonate rock sample, obtains its CT scanning slice image extraction three-dimensional pore information, after laboratory preparation plunger sample is carried out pseudo triaxial experiment, laboratory test result is used to calibrate micro parameter after construction carbonate rock model, cooperate in carbonate rock model and layout measuring ball, dynamically monitor porosity and pore pressure variation, by laboratory experiment, determine the strength reduction function of carbonate rock after, carbonate rock model is applied temperature field and stress field collaborative change true triaxial compression servo environment, using carbonate rock model carries out true triaxial experiment numerical simulation, obtains the pore condition inside carbonate rock of each stage evolution, determines the pore retention mechanism of carbonate rock under super deep thermal fluid-solid coupling, provides technical support for carbonate rock reservoir research.

This invention discloses a method and system for calculating fluid parameters in thick, light oil reservoirs, comprising: performing conventional pressure tests and production profile tests on the target reservoir and creating a pressure curve varying with depth; determining, based on the pressure curve, whether the influence of gravity differentiation on fluid properties reaches a preset level; calculating a pressure gradient estimate based on the pressure curve and calculating a first estimated gradient corresponding to the current fluid parameter to be analyzed; selecting a fluid sample from the deepest wellbore and conducting laboratory experiments to obtain the corresponding starting data of the fluid parameters; then, combining the interpretation results of the production profile and the first estimated gradient, using a gradient iteration method to calculate the vertical distribution data of the current fluid parameter to be analyzed. This invention improves the calculation accuracy of the vertical distribution of fluids while reducing the uncertainty risk of fluid prediction.

A method includes placing a metal silicate material in a path of a pre-occurring or co-occurring force. The metal silicates have a first carbon capture rate. A change in at least one of a physical property or a chemical property of the metal silicates are allowed over a period of time to cause the metal silicates to have a second carbon capture rate greater than the first carbon capture rate. In some implementations, an amount of CO2 captured by the metal silicates is quantified through direct measurement, laboratory experiments, modelling, and / or mass balance of the reactants and / or products.

The invention relates to a stress sensitivity evaluation method for a shale reservoir with a lamina, which comprises the following steps of: 1, establishing a two-dimensional standard rock core column geometric model with different lamina angles and different lamina thicknesses on the basis of a pore elastic-plastic seepage model; 2, based on geophysical interpretation, literature investigation and laboratory experiments, obtaining geomechanical parameters such as reservoir crustal stress, pore pressure, elastic modulus and Poisson's ratio; 3, different effective confining pressures are applied to the rock core in finite element software, and the change process of ground stress borne by the stratum is simulated; 4, applying seepage pressure difference to the upper end face and the lower end face of the rock core column, and monitoring the total flow flowing out of the end face of the rock core, 5, calculating to obtain the equivalent permeability of the strata-containing shale according to the Darcy law, and 6, drawing a stress sensitivity curve according to the obtained data, and evaluating the stress sensitivity of the strata-containing shale reservoir. And quantitative and accurate evaluation on the reservoir permeability sensitivity of the simulated strata shale reservoir under different effective stress conditions is realized.

The present application relates to the field of oil and gas exploitation, and in particular, to a method for obtaining electrochemical properties in the process of oil and gas exploitation, comprising: constructing a chemical reaction network between shale and external fluid; constructing a surface complexation model and a diffusion double layer model, setting initial values of thermodynamic equilibrium constant and initial values of charge density of shale; obtaining theoretical values of Zeta potential through the surface complexation model and the diffusion double layer model; when the theoretical values of Zeta potential and actual values of Zeta potential meet the convergence condition, obtaining electrochemical properties of shale after contacting with external fluid; wherein the actual values of Zeta potential are measured through laboratory experiments. The theoretical values of Zeta potential obtained by the above method are relatively accurate, and multiple electrochemical properties of shale after contacting with external fluid can be efficiently and conveniently obtained based on the theoretical values of Zeta potential, which provides analysis data and scientific guidance for subsequent efficient development of shale oil reservoirs.

The invention provides an integrated learning-based unsaturated soil-water characteristic curve prediction method and system, and belongs to the technical field of machine learning, and the method comprises the steps: collecting test data, and constructing a soil-water characteristic curve data set of a wide-suction-range unsaturated soil body; performing logarithmic transformation on the data in the data set to obtain input features; performing importance analysis and dimension reduction processing on the input features based on an average impurity reduction principle to screen out key features; training and optimizing a plurality of machine learning basic models by adopting the key features, and constructing an integrated learning prediction model by adopting a stacking generalization strategy according to prediction results of the basic models; and inputting key features of a to-be-predicted soil body into the integrated learning prediction model to obtain a saturation prediction value, and drawing to obtain a soil-water feature curve. According to the method, the soil-water characteristic curve in a wide suction range can be efficiently predicted, and the complexity and the aging cost of a traditional laboratory experiment are remarkably reduced.

The roof air supply structure of the constant-temperature and constant-humidity laboratory comprises the laboratory, and a first annular pipe and a second annular pipe are installed on the upper inner wall and the lower inner wall of the laboratory respectively. In summer, when the temperature in a laboratory is higher than the air supply temperature, the inner pipe rotates to enable the second ventilation groove above the inner pipe to be aligned with the first ventilation groove and enable the second ventilation groove below the inner pipe to be staggered with the second ventilation groove, so that when the roof constant-temperature and constant-humidity air conditioner supplies air, cold air enters the first annular pipe through the air pipe and the inner pipe; in winter, when the temperature in the laboratory is lower than the air supply temperature, the second ventilation groove below the inner pipe is aligned with the second ventilation groove, warm air enters the second annular pipe and then is sprayed out through the air outlet, air can be output from the upper portion or the lower portion of the laboratory according to seasons through the air supply structure, cold air sinks or warm air floats upwards, and the air supply efficiency is improved. And air in the laboratory can be rapidly mixed, and the constant temperature and humidity effect in the laboratory is effectively improved.

1. The name of the design product: multi-functional signal generator. 2. The use of the design product: can produce sine wave, square wave, triangle wave, can be used for laboratory experiments. 3. The design points of the design product: in the perspective view. 4. The picture or photo that best indicates the design points: perspective view.

The present application relates to the technical field of rubber material, in particular to a rubber aging life prediction method. The rubber aging prediction model parameters are weighted by the rubber natural environment test and the laboratory thermal aging accelerated test; the regression algorithm is used to fit the relationship function of the rubber aging prediction model parameters and the temperature, the parameters in the rubber aging prediction model are determined according to the temperature of the rubber to be measured in the actual storage environment, and finally the aging prediction model of the rubber in the actual storage environment is established. The present application uses the rubber natural environment test data and the laboratory thermal aging accelerated test data as the certain parameter data samples of the rubber aging prediction model, and retains the advantages of the certain parameter method based on the rubber natural environment test data and the certain parameter method based on the laboratory thermal aging accelerated test data; the time span of the rubber aging test is reduced, the test cost is reduced, and the rubber aging prediction model obtained is closer to reality and more accurate.

This invention proposes a method for determining the source of large-particle slag inclusions at defects in rolled steel plates, belonging to the field of iron and steel metallurgy technology. The method includes: determining the optimal tracer and its content through laboratory experiments; based on the laboratory results, adding the optimal tracer to the slag in a predetermined manner at a specific process stage in industrial steelmaking, controlling the addition ratio to ensure tracer effectiveness; finally, collecting samples from the defects in the rolled steel plates and analyzing the inclusion composition using an electron microscope; if tracer elements are detected, the inclusion is determined to originate from the process stage where the tracer was added. This invention, by combining laboratory pre-screening with industrial testing, improves the accuracy and efficiency of inclusion source location, providing key support for steelmaking process optimization.

The application provides a method and device for determining the operation time of expanding a borehole while drilling based on the creep law of a salt-gypsum layer, and relates to the technical field of oil and gas drilling. The method comprises the following steps: recording salt-gypsum layer creep data through a salt-gypsum layer creep test experiment; drawing a creep displacement versus creep time graph according to the salt-gypsum layer creep data; obtaining drilling log data, and determining the creep section depth, drilling fluid density and creep section deformation according to the drilling log data; determining the operation time of expanding a borehole while drilling according to the creep section depth, drilling fluid density, creep section deformation and creep displacement versus creep time graph. The application comprehensively uses laboratory experiments and field data analysis, improves the operation effect of expanding a borehole while drilling in a salt-gypsum layer, reduces the accident complexity of the salt-gypsum layer section, shortens the construction period of the salt-gypsum layer section, and saves the drilling cost.

The laboratory experiment table comprises a table board and table legs arranged on the two sides of the bottom of the table board, a power socket electrically connected with an external power source is arranged on one side of the upper end of the table board, the power socket is in conductive insertion connection with an experiment tool, and a plurality of clamping jaw mechanisms are arranged at the upper end of the table board. The clamping jaw mechanism comprises two clamps, a transmission screw rod and a fixed shell, the transmission screw rod is in transmission connection with the two clamps to drive the clamps to move, the transmission screw rod is arranged in the fixed shell, the fixed shell is arranged at the upper end of the table board, and a conductive cable of an experimental tool penetrates through the space between the two clamps and is connected with the fixed shell. According to the utility model, through the arrangement of the clamps, the transmission screw rod and the fixed housing, after the two sides of the cable are clamped and fixed by the two clamps, the redundant cable is separated from the experimental tool and is blocked behind the clamping jaw mechanism, so that when a user moves the experimental tool, the stacked cable is not driven to move, and the experimental tool is convenient to use. Therefore, the problem that the conductive circuit is exposed is avoided.

This invention discloses a method, apparatus, equipment, medium, and product for analyzing the delayed initiation time of natural fractures based on Type II subcritical fracture toughness, relating to the field of rock mechanics. It includes: obtaining a fitting curve of the Type II subcritical fracture toughness of the target reservoir corresponding to the actual burial depth of the natural fractures through laboratory experiments; determining the second variation curve of the Type II stress intensity factor at the tip of the natural fracture in the target reservoir with time t during the well-closing process; and considering the timing of the well-closing process... t m Determined from the second change curve t m The corresponding Type II stress intensity factor; based on the Type II stress intensity factor, determine the time from the fitted curve. t si ;like t si Earlier t m ,Will t si The natural fractures identified as the target reservoir correspond to the delayed fracture initiation time at the actual burial depth under the first type II stress intensity factor, thus scientifically and accurately quantifying the delayed fracture initiation time during the well-clogging process.