474 results about "Throat" patented technology

The invention relates to a dissolvable food gel gradient-based swallowing ability dynamic quantification method, which comprises the following steps of: constructing a microstructure unit consisting of an instantaneous surface attachment area and a middle-stage debonding layer in dissolvable food gel, and simulating early-stage sensing delay and middle-stage release response in a swallowing process; different material behavior reactions are generated in the front stage, the middle stage and the rear stage of swallowing by regulating and controlling the hydration diffusion rate, the surface tension and the internal cohesion difference value of the gel, and the gel of each stage corresponds to the set micro-viscosity and release coupling ratio, so that swallowing strategies of different stages are adapted; controllable disintegration temperature-sensing microparticles or traceable microcapsules are partially embedded in the food gel, the food gel is detained in a pharyngeal cavity after being swallowed, and the removal efficiency after swallowing is detected according to migration behaviors within a set time window; after swallowing, the reduction behaviors of the oral cavity, the tongue body and the throat muscle group are monitored, and when the characteristic action of reduction delay, secondary mouth opening, repeated swallowing or pharyngeal itching occurs, it is judged that the swallowing behavior closed loop is interrupted.

The invention discloses a bionic TENG sensor unit for an artificial throat and a preparation method thereof, and relates to the field of artificial throats, and the sensor unit comprises a gradient micro-dome friction layer, a strain amplification layer, an electrode layer and a back cavity substrate layer. The gradient micro-dome array realizes gradual contact through gradient change of height and diameter; the strain amplification layer converts vertical vibration into horizontal strain by using a cantilever beam-sliding block structure; the back cavity array selectively amplifies vibration at a specific frequency based on the Helmholtz resonance principle. The invention further provides a corresponding preparation method. The preparation method comprises the steps of back cavity forming, electrode deposition, microstructure manufacturing, surface treatment and the like. The sensor has the advantages of high sensitivity, good frequency selectivity and strong durability, and is particularly suitable for detecting weak laryngeal vibration signals of laryngeal patients.

The invention discloses a macro-micro parameter co-controlled large-scale heterogeneous pore throat network generation method, which comprises the following steps of: partitioning a set simulation region, randomly generating a plurality of mineral particle cores in each partition, simulating the growth of the mineral particle cores by utilizing a four-parameter random growth method, and generating a large-scale heterogeneous pore throat network. Taking the boundary of the core mineral of each mineral particle as potential pores and throats, and carrying out inversion to obtain the position distribution of each pore and throat; extracting position distribution of optimized pores and throats by using a genetic algorithm, matching coordination numbers for each pore and throat, and allocating target growth radius values for the pores and throats of each matching coordination number by setting microscopic pore-throat structure parameters of each partition; and utilizing a four-parameter random growth method to simulate that fluid in the pores and the throats in each partition corrodes the core of the mineral particles until the radiuses of the pores and the throats in each partition reach the target growth radius value one by one, and generating a pore-throat network image of the set simulation area.

The utility model relates to a bronchoscope analog simulation device which comprises a lung mold and a throat mold, the throat mold comprises a shell and a glottis structure arranged in the shell, and the glottis structure is configured to simulate the glottis of a person and can be opened and closed according to a set program; an inlet allowing the insertion end of the bronchoscope to enter is formed in the top of the shell, an outlet allowing the insertion end of the bronchoscope to penetrate out is formed in the bottom of the shell, and the outlet in the bottom of the shell is communicated with a main air pipe of the lung mold. According to the invention, the insertion simulation operation process of the bronchoscope is realized and is closer to the actual operation environment.

The invention discloses a reasonable pore throat segmentation factor selection method for a glutenite reservoir pore network model, and the method comprises the steps: obtaining a three-dimensional grayscale image of a glutenite reservoir sample, and obtaining a three-dimensional digital core model based on the three-dimensional grayscale image; setting a plurality of pore throat segmentation factors, and obtaining a plurality of pore network models of the glutenite reservoir samples according to the three-dimensional digital core models of the glutenite reservoir samples and the pore throat segmentation factors; calculating the theoretical permeability of the pore network model of each glutenite reservoir sample; determining the actually measured permeability of the glutenite reservoir sample through an indoor test, comparing the actually measured permeability with each theoretical permeability, and selecting the pore throat segmentation factor corresponding to the closest theoretical permeability as the reasonable pore throat segmentation factor of the glutenite reservoir pore network model. The reasonable pore throat segmentation factor of the shrinkage pore sample selected through experimental comparison can be well matched with a real reservoir, and the accuracy of a pore network model is improved.

The invention discloses a device for evaluating a swallowing function. The device comprises a point cloud data acquisition module, a three-dimensional modeling and silica gel printing module, a sensor module and a processing and evaluating module, wherein the point cloud data acquisition module is used for acquiring point cloud data of the throat part of a patient; the three-dimensional modeling and silica gel printing module comprises a three-dimensional reconstruction unit and a silica gel 3D printing unit, and a silica gel model is made of a biocompatible silica gel material and has flexibility and plasticity; the sensor module is integrated on the silica gel model and comprises an attitude sensor, a surface myoelectricity sensor, a temperature sensor and a microphone; and the processing and evaluation module is used for performing feature extraction and machine learning analysis according to the data acquired by the sensor module, comprehensively evaluating the coordination, motion range and dynamic features of the swallowing action, generating personalized rehabilitation suggestions for dysphagia, and generating a detailed and comprehensive swallowing ability evaluation report at the same time. The method is non-invasive, real-time, dynamic and highly accurate.

The invention discloses a laryngeal mask airway which comprises a ventilation catheter, the far end of the ventilation catheter is provided with a mask bag, the mask bag is used for forming tight connection conforming to an anatomical structure at the laryngeal entrance of a patient and covering the laryngeal entrance of the patient to form sealing, and the mask bag is filled with a sponge-shaped material. The surface of the mask bag has a fixed shape and is deformable, and the mask bag can be jointed on the anatomical structure of the laryngeal entrance part of a patient. The sponge-shaped material is filled in the mask bag, so that when the mask bag is inserted into the throat position of a patient, the insertion contact pressure with the throat surface of the patient is small, insertion damage to the throat of the patient is avoided, and the mask bag can automatically recover to the original shape after being inserted, can be jointed on an anatomical structure of the throat inlet part of the patient and is in sealing contact with the peripheral side of the throat of the human body; and the sealing performance is better.

The invention provides a multi-mode ear-nose-throat patient rehabilitation scheme optimization method and system, and the method comprises the steps: S1, obtaining the ear-nose-throat pathology data of a patient, carrying out the preprocessing operation of the ear-nose-throat pathology data, carrying out the fusion, generating a rehabilitation feature tensor, comprehensively integrating the physiological signals, image features and clinical text data of the patient, and carrying out the recognition of the rehabilitation feature tensor; the limitation of a single data type is broken through, iterative optimization is carried out through the rehabilitation prediction model constructed in the steps S2 and S3 in combination with an improved genetic algorithm, the rehabilitation effect is accurately predicted, training parameters are dynamically adjusted, the accuracy and effectiveness of rehabilitation treatment are improved, finally, quantitative evaluation indexes and evaluation are combined through the step S4, and the rehabilitation treatment accuracy and effectiveness are improved. And the scientificity of the scheme is judged according to a mean threshold value, so that the fitness, implementation safety and expected effect reasonability of the scheme are guaranteed, the treatment risk is reduced, and a safer and more efficient auxiliary rehabilitation scheme is provided for the patient.

The invention provides an intelligent stomach tube based on optical fiber sensing and image monitoring, and the stomach tube comprises a stomach tube body which is internally integrated with an optical fiber and a miniature camera assembly; at least three FBG (Fiber Bragg Grating) sensing nodes which are respectively positioned in the stomach, the esophagus and the throat section are inscribed on the optical fiber and are used for acquiring pressure and temperature signals; the miniature camera assembly is arranged on the inner wall of the throat section and used for collecting images. A demodulation-edge AI processing terminal is arranged outside the body, connected with the sensing nodes and the camera shooting assembly and used for demodulating signals and conducting multi-mode fusion analysis on the basis of pressure signals and image data, real-time judgment of the situation that the catheter enters the airway by mistake, intelligent evaluation of the risk of aspiration before catheter drawing and early warning output when the risk exceeds the standard are achieved. According to the invention, the FBG sensing node and the miniature camera shooting assembly are integrated in the stomach tube, and the in-vitro demodulation-edge AI processing terminal is combined, so that precise and automatic monitoring and early warning of the whole process from tube indwelling to tube drawing evaluation are realized, and the safety and the medical quality of a patient are fundamentally improved.

The invention relates to a pore throat structure style analysis method and device based on a fractal theory, and the method comprises the steps: obtaining a rock sample mercury injection curve through a mercury injection experiment, and obtaining mercury intrusion dynamic parameters of a plurality of test points; calculating a mercury intrusion dynamic parameter logarithm value according to the rock sample mercury intrusion curve; fitting the mercury intrusion dynamic parameter logarithm value to obtain a linear regression fitting straight line; calculating the pore fractal dimension of the rock according to the slope of the linear regression fitting straight line; and analyzing the pore throat structure style according to the pore fractal dimension to obtain an analysis result. The fractal theory and the mercury injection experiment are combined, and classification characterization and three-dimensional simulation of the reservoir complex pore throat structure style can be achieved through reservoir pore fractal dimension determination.

The invention discloses a microcosmic visual photoetching model manufacturing method based on image processing. The design scheme comprises the following steps: identifying pores and a rock skeleton in a rock core casting body slice image by utilizing machine learning so as to extract the pores; generating a throat by using a watershed algorithm; extracting a throat by using a contour recognition algorithm; assigning the throat radius to the throat size distribution obtained by high-pressure mercury injection by using an expansion algorithm; combining pore and throat images, extracting pore and throat contours, converting the pore and throat contours into a geometric model, importing the geometric model into COMSOL to calculate porosity and permeability, and verifying physical properties of the model; and finally, connecting a photoetching machine, and manufacturing a microscopic visual photoetching model with a real pore throat structure. The model manufacturing method is programmed, simple and practical, the problem that the throat cannot be extracted from a slice image due to the compact rock core is avoided, meanwhile, the physical properties of the model and the real rock core are compared and verified by using a simulation means, the physical properties of the reservoir can be better represented, and a reliable basis is provided for a microscopic visualization experiment.

The invention discloses an in-vitro magnetic target positioning and navigation method and system for the throat, and belongs to the technical field of medical equipment, and the method comprises the following steps: constructing a three-dimensional anatomical model based on throat image data, and marking the position of a reference magnet; the optimal path of the catheter from an inlet to a target spot is planned, a guiding magnet is arranged in the front end, and an in-vitro magnet is used for traction control. The magnetic sensor array tracks the position in real time, and the deviation is corrected through closed-loop control. Monitoring the distance from the organization in real time, and warning and re-planning the path when the distance is smaller than a threshold value. According to the method, the accuracy and safety of catheter positioning and navigation are improved.

The utility model relates to the technical field of throat ventilation medical treatment, in particular to an inflation extension type oropharynx airway which comprises an oropharynx ventilation part and a telescopic inflation extension part connected with the tail end of the oropharynx ventilation part, the inflation extension part is connected with an inflation catheter, and the inflation catheter is placed along the pipeline wall of the oropharynx ventilation part. The inflatable extension type oropharyngeal airway is used in cooperation with an existing fiber bronchoscope through the inflatable extension piece, the glottis direction of a patient can be accurately found, and the definite operation guiding effect on auxiliary ventilation, auxiliary medicine injection and suction of secretions around the glottis is achieved; the technical problem that secretions around the glottis and in the trachea cannot be effectively removed through an existing oropharyngeal airway is solved.

The utility model relates to the technical field of anesthesia quantitative sprayers, and discloses a throat anesthesia quantitative sprayer which comprises a fixing cylinder, a lifting assembly is fixedly connected to the middle of the surface of the fixing cylinder, a threaded hole is formed in the surface of the fixing cylinder, and a medicine placing bottle is in threaded connection with the interior of the threaded hole. A cavity is formed in the fixing cylinder, a transmission assembly is fixedly connected to the interior of the cavity, and the surface of the transmission assembly is sleeved with a medicine containing cylinder. According to the anesthetic quantitative sprayer for anesthetizing the throat part, through the arrangement of the transmission assembly, when the anesthetic quantitative sprayer is used, a medicine containing bottle is screwed on a fixing cylinder, anesthetic in the medicine containing bottle flows into a medicine containing cylinder, an external power source is connected, a servo motor is turned on, the servo motor drives a transmission rod, the transmission rod drives a lead screw, and the lead screw rotates to enable the anesthetic to flow into a transmission pipe; the situation that medical workers manually add anesthetics is avoided, and therefore the effect of facilitating use of the medical workers is achieved.

The invention discloses a tracheal catheter capable of preventing flushing fluid from entering an esophagus. The tracheal catheter is suitable for operations of oral cavities, nasal cavities, neurosurgical skull bases and the like. Comprising a tracheal catheter module and a partition cuff module, the tracheal catheter module comprises a tracheal catheter body, a connector, an air bag and a first inflation tube. The connector, the air bag and the first inflation tube are arranged on the tracheal catheter body. The partition cuff module comprises a cuff, a diaphragm layer, a second inflation tube and a suction tube, the cuff is arranged at the tongue root position of the tracheal catheter body, and a diaphragm layer hole with an overflowing hole is formed in the upper side face of the cuff; a second inflating tube and a suction tube are arranged on the tracheal catheter body; when the cuff is inflated and expanded, the internal air pressure of the cuff is low pressure, the middle of the cuff is sunken downwards, and the periphery of the cuff is tilted and clings to the mucosa of the throat of a patient. The tracheal catheter effectively blocks the connection between the oral cavity and the esophagus, prevents flushing fluid from entering the esophagus and the stomach, and has important significance for improving the safety and success rate of oral cavity and neurosurgery skull base operations.

The invention relates to the field of medical electronics and rehabilitation engineering, and discloses a throat electromyographic signal synchronous swallowing action monitoring and aspiration early-warning device which comprises a shell, a display screen is fixedly connected to the top of the shell, a connecting end is arranged outside the shell, one end of a connecting wire is arranged in the middle of the connecting end, and the other end of the connecting wire is connected with the display screen. A signal collecting assembly is arranged outside the connecting line at the other end, the collecting assembly is electrically connected with a signal processing assembly and used for receiving collected throat electromyographic signals, analyzing the signals and outputting the signals, and the signal processing assembly comprises a main control circuit board. According to the invention, through the multi-source signal synchronization module, a mechanical acceleration peak value of laryngeal knot movement is captured by using an inertial sensor to serve as a hard time reference point, and a time window is constructed to segment and align throat electromyographic signals, so that the time resolution and the analysis accuracy of swallowing action feature extraction are improved.

The invention provides a recessive gastroesophageal reflux event data analysis system and method based on dynamic changes of abdominal pressure. The system and method are suitable for noninvasive detection of atypical reflux clinically. The system comprises an abdominal pressure dynamic detection unit, a throat vibration detection unit, a multi-mode signal processing module, a reflux event judgment module and a data output module. According to the system, by analyzing time sequence linkage between abdominal pressure mutation and throat vibration, a stomach content countercurrent event is recognized, silent type countercurrent characteristic sound is captured with the assistance of a bone conduction sound wave channel, and multi-path redundancy recognition is achieved. The method is suitable for postoperative patients, children, old people and other people who cannot complain, has the technical advantages of continuous wearing, behavior correlation analysis and clinical verifiability, and significantly improves the recognition rate and diagnosis accuracy of recessive gastroesophageal reflux events.

The invention discloses an intelligent classification and recognition method for ear-nose-throat lesion images, and relates to the technical field of image recognition, and the method comprises the steps: synchronously collecting a nasopharynx white light image and an i-Scan image, screening an image meeting a quality standard, carrying out the correlation of pathology and grading labeling, and constructing a data set containing a multi-center case; the white light image and the i-Scan image are subjected to denoising processing, key mark points are extracted, image registration is completed, a mucous membrane surface area, a submucous membrane blood vessel area and a lymphatic tissue enrichment area are divided through semantic segmentation, and feature enhancement is carried out on different areas; extracting morphological features and textural features from the enhanced image, calculating feature importance weights and fusing the feature importance weights into low-dimensional feature vectors; the benign and malignant dichotomy model and the pathological type multi-classification model are respectively constructed, and classification results are output in combination with a doctor diagnosis rule base and verification indexes, so that the accuracy and clinical practicability of ear-nose-throat lesion diagnosis are remarkably improved.

The invention discloses a method and a device for assisting oral tracheal intubation based on sound wave signals, which can further improve the success rate of oral tracheal intubation and confirm whether intubation succeeds or not in real time. The method comprises the following steps: (1) placing a guide wire into a tracheal catheter, penetrating one end of the tracheal catheter through a small hole of a plastic interface, and inserting a sound wave receiver into a large hole of the plastic interface; (2) a loudspeaker connected with a sound wave signal generator is turned on and placed on the throat of the patient, and a specific sound wave signal sent by the sound wave signal generator is transmitted to the airway and vocal cord of the patient through the surrounding cartilage vibration of the patient; (3) the sound wave receiver obtains a signal through the other end of the tracheal catheter; (4) the signal processing unit performs filtering and analog-to-digital conversion on the signal, and compares the signal with the signal at the previous moment in real time; (5) the display receives the comparison result of the step (4) and displays the result; and (6) if the comparison result is that the current moment signal is greater than or equal to the previous moment signal, determining that the tracheal catheter intubation is accurate, otherwise, determining that the intubation is wrong.

The invention discloses a throat and upper digestive tract foreign matter taking-out device and a foreign matter taking-out method.The throat and upper digestive tract foreign matter taking-out device comprises an outer shell, an inner shell is nested in the outer shell, the inner shell is in sliding fit with the outer shell, a moving assembly used for pushing the inner shell to slide is arranged on the surface of the outer shell, an operating rod is arranged in the inner shell, and a clamping assembly is hinged to the operating rod; a plurality of supporting petals are hinged to the surface of the outer shell, first connecting rods are hinged to the inner walls of the supporting petals, first hinge bases are hinged to the middles of the first connecting rods, second connecting rods are hinged to the first connecting rods, and the second connecting rods are hinged to the inner shell. Through opening and closing of the multiple supporting petals, expansion of the throat or the upper digestive tract and wrapping operation during taking out of the foreign matter are completed, the foreign matter clamping efficiency is improved, and meanwhile the possibility of secondary damage to the throat or the upper digestive tract caused by the foreign matter in the process of taking out the foreign matter from the throat or the upper digestive tract after the foreign matter is clamped is reduced; and the safety and efficiency of the foreign matter extraction process are improved.

The invention discloses a glutenite reservoir pore throat structure quantitative identification method and device, a medium and computing equipment, and the method comprises the steps: analyzing a pre-processed sample based on nuclear magnetic resonance and mercury intrusion test, and obtaining a full-scale pore throat radius data set corresponding to a full-band nuclear magnetic resonance spectrum; analyzing the full-scale pore throat radius data set to obtain a turning point of the fractal dimension curve; based on the turning point of the fractal dimension curve, determining the pore throat space type of the pre-treated sample; and based on the pore throat space type and the content corresponding to the pore throat space type, quantitatively identifying different modal pore throat structures of the pre-treated sample. The method and the device aim at improving the accuracy of quantitative recognition of different modal pore throat structures by performing full-scale characterization on the pre-processed sample.

The invention provides a throat motion monitoring method based on stereoscopic perception and a hybrid coding Transform model. The method comprises the following steps: acquiring throat epidermis motion characteristics through a mechanical motion sensing unit; acquiring features of deep muscle groups of the throat through an electrical characteristic measuring unit; performing data preprocessing on the laryngeal epidermis motion features and the laryngeal deep muscle group features to obtain a data set; the data set is input into an HE-Transform model for feature analysis, and a classification result is obtained; the HE-Transform model is composed of an embedded layer, a Patch division layer, a position coding layer, a Transform layer and a linear layer which are connected in sequence. According to the method, all-directional tracking of the physiological activity of the throat is achieved through the three-dimensional perception technology from the epidermis to the deep layer, and global information and local features of signals are considered through a Transform frame with mixed codes.

The invention belongs to the technical field of microcosmic interface dynamic research, and relates to a method and system for predicting the imbibition behavior of a microcosmic two-phase interface of a porous medium, and the method comprises the steps: obtaining a pore network composed of pores and throats according to a target porous medium; calculating the flow of the two-phase fluid injected into the throat; according to the flow of the two-phase fluid injected into the throat, the flow of the fluid in the main interface displacement mode and the flow of the fluid in the wetting mode displacement mode are calculated; determining the displacement mode of the two-phase fluid interface according to the fluid flow ratio under the two displacement modes; according to the displacement mode of the two-phase fluid interface, the flow resistance corresponding to the throat is calculated; according to the flow resistance, a motion control equation of the two-phase fluid is updated, and therefore prediction of the imbibition behavior of the micro two-phase interface of the porous medium is completed. According to the method, the preferential flow paths and the dynamic evolution modes of different types of interfaces in the displacement process in the pore structure of the complex porous medium are defined, and the types of the fluid interfaces are accurately judged under the transient condition.

The invention discloses a throat mucosa intelligent state evaluation and inflammation early warning management system and method. The method comprises the following steps: synchronously acquiring a throat mucosa image, breath sound / cough sound / sounding signals, airflow data and body temperature or environment relative humidity data, evaluating image definition, shielding degree and coverage rate, and outputting acquisition guide superposition information and triggering re-acquisition when the image does not reach the standard; reliability is calculated for the multi-modal features, weight fusion output state vectors and confidence coefficients are determined in combination with quality gating, and cross-modal consistency verification is executed to trigger re-sampling or strategy adjustment; generating a risk index based on the change of the sliding time window, and outputting an early warning level by adopting hysteretic classification; and writing the threshold, the weight and the sampling and guiding strategy into a parameter library and a fusion model configuration area to form a closed loop. According to the system, improper electroencephalogram fusion and multi-terminal collaborative optimization can be selected, and daily scene evaluation stability and early warning reliability are improved.

The invention relates to the technical field of child nursing, in particular to a sputum aspirator for child nursing and a sputum aspiration method thereof.The sputum aspirator comprises an air suction device and a basic negative pressure bottle, the basic negative pressure bottle is arranged on the air suction device and connected with the air suction device through an air suction pipe, a sputum aspiration pipe is arranged on the basic negative pressure bottle, and the sputum aspiration pipe is connected with the basic negative pressure bottle. The sputum suction pipe is provided with an opening supporting mechanism capable of opening the mouth of a child and forming supporting. Through the combined action of the rotating assembly, the opening supporting mechanism and the sputum suction pipe, when the rotating assembly drives the sputum suction pipe to slide out of the throat and the trachea of a child, an external thread winding column is pulled to rotate through a connecting pull rope; the connecting pipe sleeve and the sputum suction pipe attached to the inner side of the connecting pipe sleeve are driven to rotate synchronously through the linkage effect of the linkage gear set, the sputum suction pipe is kept in a spinning state when penetrating through the opening supporting mechanism to slide outwards, the defect caused when a worker manually operates a pipeline to rotate is overcome, and the sputum suction process is better completed.

A computer-implemented method is provided. The computer-implemented method can include receiving one or more input NMR measurements at a first neural network; transforming the one or more input NMR measurements to a predicted pore throat size distribution or one or more predicted pore throat size parameters; receiving the predicted pore throat size distribution or the one or more predicted pore throat size parameters at a second neural network; transforming the predicted pore throat size distribution or the one or more predicted pore throat size parameters to a predicted NMR T2 distribution or one or more predicted NMR T2 parameters; and applying one or more physics based equations to the predicted NMR T2 distribution or the one or more predicted NMR T2 parameters to forward model the predicted NMR T2 distribution or the one or more predicted NMR T2 parameters to one or more simulated NMR measurements.

The invention relates to the technical field of medical data monitoring and early warning, in particular to a dynamic monitoring and early warning system for abnormal function of Eustachian tube. The system is characterized in that a data acquisition module acquires time sequence data of various eustachian tube state parameters such as tympanic chamber vibration, pharyngeal vibration and tympanic chamber air pressure, when a human body is yawn or swallowed, the eustachian tube is opened, the larger the opening is, the stronger the vibration of the tympanic membrane and the pharyngeal is, and the transmission decibel to an external auditory canal is increased, so that a eustachian tube opening section positioning module analyzes the characteristics to determine the auditory canal opening section; the opening amplitude of the Eustachian tube is accurately obtained, and an opening section is accurately cut out; after the Eustachian tube is opened, the air pressure in the tympanic chamber approaches and tends to the external auditory canal air pressure, the health index analysis module divides an approaching section and a leveling section in an opening section based on the air pressure change consistency, analyzes the air pressure change correlation by fusing multi-aspect information, and obtains health indexes by combining section length difference and air pressure difference characteristics; and finally, monitoring and early warning are performed on the Eustachian tube of the monitored object based on the health indexes in a monitoring and early warning module.

The invention discloses a calibration method and system of a throat area detection device. The calibration method comprises the following steps: manufacturing a standard sample piece, wherein the standard sample piece comprises a guider sample piece and a standard mounting disc; mounting the standard mounting disc on a rotary table of the detection device; the throat area S1 of the guider sample piece is measured at the position P1; the throat area Sn of the guider sample piece is measured at the position Pn; whether the error between the S1 and the Sn exceeds a first preset threshold value or not is determined, if yes, the detection device is checked, and the areas of the guider sample piece at all the radial positions are the same. The calibration method further comprises the steps that the average value Svt1 of the throat area of the guider sample piece measured at the time t1 is determined; determining the throat area Svtm of the guider sample piece measured at the time tm different from t1; and determining whether the error between the Svt1 and the Svtm exceeds a second predetermined threshold, and if so, checking the detection device. The invention further discloses a corresponding calibration system.

The invention discloses a quantitative evaluation method and device for pore throat heterogeneity of a tight sandstone reservoir and a storage medium, and belongs to the technical field of oil exploration, and the quantitative evaluation method comprises the following steps: based on a core mercury injection experiment, obtaining mercury injection experiment data required for pore throat heterogeneity evaluation; processing mercury injection experiment data, calculating to obtain Lg (1-SHg) and LgPc, and drawing a cross plot of the Lg (1-SHg) and the LgPc; fractal intervals corresponding to different pore throats are intercepted through the cross plot; fitting the trend line of each fractal interval to obtain fractal dimensions corresponding to different fractal intervals; obtaining a relative fractal dimension of each fractal interval relative to the whole reservoir; based on the relative fractal dimension, parameters capable of comprehensively representing the anisotropism of the overall pore throat of the reservoir are obtained. The new parameters obtained by the method and used for characterizing the anisotropism of the whole pore throat of the reservoir provide technical support for comprehensively, accurately and quantitatively characterizing the anisotropism of the microscopic pore throat structure of the compact sandstone reservoir.

The invention belongs to the technical field of oil and gas field development engineering, and particularly relates to a construction method of an emulsion generation kinetic model. The method is based on a micro-fluidic experiment, comprehensively considers seven factors of pore throat radius, pore throat form, pore throat coordination number, displacement environment temperature, surfactant concentration, injection speed and crude oil viscosity, and determines an undetermined coefficient of a function by utilizing a least square method through single factor analysis and orthogonal experiment scheme design; therefore, the functional relationship among the pore throat radius, the pore throat form, the pore throat coordination number, the displacement environment temperature, the surfactant concentration, the injection speed, the crude oil viscosity and the emulsion generation rate and the generation radius is defined, and an emulsion generation kinetic model is constructed, so that an emulsion generation theoretical system under the multi-factor coupling effect is perfected; and reference is provided for other similar chemical flooding.