792 results about "Fluid injection" patented technology

An autonomous agricultural drone system for the precise spraying of pesticides, consisting of: an advanced image recognition camera integrated with an artificial intelligence (AI) module specifically trained on pest and plant health datasets, with the camera configured to detect specific pests, identify pest hotspots, and differentiate between healthy and stressed plants; a real-time decision processor that is operationally connected to the image recognition camera, the processor being configured to: Data received from the image recognition camera is interpreted to assess pest density and plant health. adjusts the pesticide output and spraying patterns of the drone based on real-time field conditions, determines the severity of pest infestation in order to avoid excessive use of pesticides and to apply pesticides precisely and only where they are needed; a multitude of intelligent spray nozzles equipped with sensors and actuators, each nozzle configured to dynamically adjust its spray rate based on pest density and plant species, as determined by the real-time decision processor, thereby minimizing chemical use and environmental impact; characterized by the fact that The drone system includes a multi-liquid injection nozzle system that allows the drone to carry and selectively apply multiple solutions, including pesticides and nutrients, in a single flight, with the system configured to switch between solutions in response to real-time data from the image recognition camera and decision processor.

The invention relates to a non-linear seepage experiment method for gas breaking through a cover layer based on dark field imaging. The method comprises the following steps: placing a microfluidic rock chip on an objective table of a dark field scattering microscope; the injection end of the microfluidic rock chip is connected with a fluid injection module, and the outlet end of the microfluidic rock chip is connected with a downstream outflow pipeline; injecting the formation water solution into the micro-fluidic rock chip until the micro-fluidic rock chip is filled with the formation water solution; opening a gas injection system, and adjusting the dark field scattering microscope until a clear image of a micro-fluidic rock chip pore structure and carbon dioxide displacement formation water is obtained; injecting carbon dioxide with different pressures into the micro-fluidic rock chip, and observing nonlinear seepage migration images of carbon dioxide and formation water in the micro-fluidic rock chip; when it is observed that carbon dioxide migrates to the outlet end of the rock chip, the breakthrough moment is obtained, and the upstream and downstream pressure difference value of the microfluidic rock chip is the breakthrough pressure. According to the method, the nonlinear seepage of the carbon dioxide displacement formation water in the nanopores can be accurately observed, and the breakthrough pressure can be determined.

The invention discloses a Brazilian splitting experiment device and method based on multiple heating modes, and belongs to the technical field of splitting experiments. Comprising a base, a Brazilian splitting clamp, a kettle body, a heating system, a heat transfer fluid injection hole, an axial pressure head, a temperature and pressure monitoring and heat transfer fluid outlet, a magnetic particle imaging system and a high-temperature early warning system, the temperature and pressure monitoring and heat-carrying fluid outlet is used for being connected with an external real-time observation system to conduct temperature and pressure monitoring and serves as an outlet of heat-carrying fluid at the same time. The magnetic particle imaging system is used for observing the distribution state of nano magnetic induction particles in the kettle body; the real-time high-temperature Brazilian splitting experiment can be carried out in multiple heating modes such as convection heating, conduction heating and supercritical fluid heating, the generation and expansion process of cracks in a sample can be monitored in real time, and the device is suitable for testing the strength and crack expansion of rocks under the thermal stress condition possibly encountered in actual engineering.

The invention discloses an experimental device and method for controlling migration and mineralization of ore-forming fluid in a wrinkle deformation process, and belongs to the technical field of ore deposit geology. The device comprises an ore liquid synthesis unit and a mechanical deformation simulation and mineralization analysis unit. The mechanical deformation simulation unit comprises a box body, an extrusion deformation system, a liquid injection system and a heating temperature control system, and can synchronously realize visual analysis of structure extrusion, fluid injection and mineralization precipitation at high temperature. The experimental method comprises the following steps: firstly, preparing a simulated metallogenic fluid containing FeS2 (pyrite); laying simulated surrounding rock and wrinkles in the box body, arranging a separation layer, and heating; extruding the sand layer and injecting fluid to simulate a mineralization process; and slicing, sampling and analyzing after model consolidation, and establishing a mineralization space distribution model. The device is simple in structure and convenient to operate, the whole process of fold extrusion, crack extension, fluid migration and mineral precipitation can be repeatedly represented, and an experimental basis is provided for hydrothermal deposit mineralization mechanism research and prospecting prediction.

The invention discloses a multifunctional CT triaxial experiment device and method for high-temperature and high-pressure rock, and belongs to the technical field of rock engineering measurement devices. The device comprises a device body, a confining pressure pump, an electric heater, a fluid outflow container, a fluid injection container and a CT radiation device, and the device body can enter an inner cavity of the CT radiation device along a sliding way. The device main body mainly comprises a reaction kettle cover, a reaction kettle barrel, a reaction kettle base, a tip cone type force sensor, a sample assembly and a stepping motor. According to the invention, on the premise that a triaxial compression test can be carried out, the force balance stability, the split-flow infiltration capacity, the scanning sample stability and the test detection means in the shearing process of the triaxial apparatus test device are improved, and the research is beneficial to deeply understanding the mechanical properties and behaviors of rocks under geological conditions; and technical support is provided for exploring deep geological resource development and engineering construction.

The invention discloses a low-permeability rock breakthrough pressure testing method based on schlieren imaging. The method comprises the following steps: putting a test rock sample into a confining pressure cavity of a rock sample holder; the injection end of the rock sample holder is connected with the fluid injection module, the outlet end of the rock sample holder is connected with the schlieren cavity, and the confining pressure cavity is connected with the confining pressure injection module; vacuumizing a pipeline of the testing device, injecting a degassed purified water medium into the schlieren cavity, and then carrying out optical path debugging until a clear schlieren image is acquired; loading confining pressure stress on the test rock sample, injecting water until the test rock sample is saturated, injecting carbon dioxide, observing a schlieren imaging system, recording a schlieren image of carbon dioxide breakthrough by a high-precision camera when the carbon dioxide breaks through the saturated rock sample, recording the breakthrough moment of the carbon dioxide, and recording the upstream and downstream pressure difference value at the moment; the breakthrough pressure is the breakthrough pressure of the carbon dioxide of the tested rock core sample. According to the invention, a trace concentration of carbon dioxide can be visually observed to break through the rock sample, so that the breakthrough pressure of the low-permeability rock can be accurately detected.

The provided is a test system and method for achieving three-directional multiphase seepage in a true triaxial loading process. The test system includes a three-directional multiphase seepage loading cabin including a sample metal frame, a loading frame, an outer plate, a fluid injection module, a fluid recovery module, and six loading indenter modules as well as a fluid injection and measurement system; the sample metal frame is arranged at a center of the loading frame, the outer plate is arranged on the loading frame, the fluid injection module and the fluid recovery module are arranged respectively at an upper part and a lower part of the loading frame, and the fluid injection and measurement system is connected to the three-directional multiphase seepage loading cabin; and the loading indenter modules are arranged in the loading frame from six directions, and the indenters of the loading indenter modules are arranged.

The invention provides a reverse structure and fluid migration integrated experimental device and method.The reverse structure and fluid migration integrated experimental device comprises an experimental box, the experimental box is a rectangular box, and an experimental model for simulating a stratum structure is arranged in the experimental box; the push-pull power mechanism is connected with the experiment box and is used for pushing and pulling the experiment model in the experiment box so as to stretch or extrude the simulated stratum; and the fluid injection mechanism is used for injecting dyeing fluid from the side direction of the experimental model. According to the device and the method, the extrusion structure deformation process can be simulated on the basis of a stretching simulation result of uniform stress transmission, fluid migration simulation is completed under the condition that an elastic polymer used in a stretching simulation experiment is not damaged, and effective combination of reversal structure simulation of stretching first and then extrusion and fluid migration simulation is achieved.

The invention provides an oil shale formation temperature field simulation method and system for fluid injection heating mining, a storage area is divided into a plurality of unit mining spaces according to geologic feature data of the storage area to be mined, a mass conservation operation model corresponding to fluid injection in-situ mining is constructed for each unit mining space based on the principle of mass conservation, and the temperature field of the oil shale formation is simulated. According to the principle that high-temperature fluid carries heat to conduct heat transfer and exchange with a rock mass system in a conduction and convection mode and the influence on a temperature field in a rock mass, an energy operation model corresponding to fluid injection in-situ mining is built; preset initial parameters are introduced, the mass conservation operation model and the energy operation model are solved based on the discrete process, initial mass field data and energy field data are calculated, and then temperature field data of subsequent time are calculated in combination with a Newton iteration method. According to the scheme, the limitation of low precision of existing temperature field simulation is overcome, and rigorous and accurate temperature field space-time distribution of the oil shale under fluid injection heating is obtained.

The invention belongs to the technical field of sand control well completion in the natural gas hydrate development industry, and particularly relates to a natural gas hydrate reservoir gravel packing sand control long-period simulation experiment device and a sand control chart construction method. The simulation experiment device comprises a sand production and prevention and control integrated simulation system, a fluid injection system, a confining pressure pump, a liquid recovery tank and a data acquisition system, wherein the sand production and prevention and control integrated simulation system comprises a reservoir simulation module, a shaft annulus gravel layer simulation module and a screen pipe pre-filling layer simulation module; the fluid injection system and the confining pressure pump are connected with the reservoir simulation module, the liquid recovery tank is connected with the screen pipe pre-filling layer simulation module, and the data acquisition system is in signal connection with the sand production and prevention and control integrated simulation system. The simulation experiment device designed by the invention can truly simulate different production working conditions of the hydrate well, can accurately simulate the structure of the hydrate well bottom gravel packing sand control system, and can truly reduce the flow process of the hydrate well bottom fluid, so that the obtained experiment result is more authentic.

The invention discloses a CCUS experimental device and method for carbon dioxide flooding and storage, and relates to the technical field of petroleum engineering. The device comprises a three-dimensional oil reservoir physical model, a fluid injection system, a fluid collecting and metering system, a resistivity monitoring system and a fluid migration observation system. The three-dimensional oil reservoir physical model is used for constructing a simulated stratum, and a development well pattern system is installed on the simulated stratum; the fluid injection system is connected with the injection well; the fluid collecting and metering system is connected with the production well; the resistivity monitoring system is provided with a plurality of monitoring points on the simulated stratum; the fluid migration observation system is used for observing a migration path of supercritical carbon dioxide in the three-dimensional oil reservoir physical model; and the distributed optical fiber monitoring system is arranged in the simulated stratum. According to the device and the method, oil reservoir water injection exploitation and CO2 injection oil displacement and CO2 storage stability simulation experiments in the later development period can be realized.

The invention provides a dynamic strength test system and method for a soft rock biaxial Hopins compression bar, and the system comprises an axial impact loading unit which is used for generating an axial impact load; the confining pressure loading unit is used for applying radial confining pressure to the sample; the high-pressure fluid injection unit is used for injecting high-pressure fluid into the sample and simulating different internal water pressure and water saturation conditions; the data acquisition unit is used for recording impact load, confining pressure, internal water pressure and sample dynamic response data in real time; the control system is used for coordinately controlling the axial impact speed, the confining pressure and the internal water pressure value; by integrating the axial impact loading unit, the hydraulic servo confining pressure loading unit and the high-pressure fluid injection unit, a test platform capable of truly simulating a complex stress-seepage coupling environment where the deep soft rock is located is formed; therefore, the synchronous, independent and accurate control of axial dynamic load, constant or dynamic confining pressure and internal pore water pressure is realized.

The invention provides an experimental method and system for researching the hydraulic fracturing crack propagation process, and the method comprises the steps: employing a true triaxial stress simulation module to load stress in the X, Y and Z directions of a sample to simulate an in-situ stress state; a fluid injection control module is adopted to simulate the fluid injection process of the sample in actual fracturing construction; acquiring pressure data acquired by the pressure sensor array and acoustic emission data acquired by the acoustic emission probe; performing timestamp synchronization on the pressure data and the acoustic emission data, and performing feature extraction and time-space association on the pressure data and the acoustic emission data subjected to timestamp synchronization to obtain pressure dynamic response feature information and acoustic emission feature information meeting time-space association conditions; and based on the pressure dynamic response characteristic information and the acoustic emission characteristic information which meet the space-time correlation condition, performing crack propagation process identification on the sample. According to the method, the problem of synchronous association of pressure fluctuation and crack behaviors under the multi-field coupling condition can be solved.

The invention provides a real rock polydimethylsiloxane micro-fluidic chip and a preparation method thereof. The preparation method comprises the following steps: pouring a rock slice by using liquid PDMS to obtain the top layer of the micro-fluidic chip; a second microfluidic chip layer comprising a first L-shaped pressure-bearing pipe, a second L-shaped pressure-bearing pipe and a PDMS sheet layer provided with a fluid injection flow channel and a fluid extraction flow channel is constructed, and the fluid injection flow channel and the fluid extraction flow channel are each provided with an input hole and an output hole which are communicated with the outside of the PDMS sheet layer. Long-distance pipelines of the first L-shaped pressure-bearing pipe and the second L-shaped pressure-bearing pipe respectively extend into the fluid injection flow channel and the fluid extraction flow channel and are attached to the inner walls of the flow channels, and short-distance pipelines respectively extend out of the PDMS sheet layer; assembling and bonding the layers of the micro-fluidic chip in sequence to obtain the real rock polydimethylsiloxane micro-fluidic chip; the injection flow channel output hole and the fluid extraction flow channel input hole make contact with the bottom face of the rock slice. The real rock polydimethylsiloxane micro-fluidic chip provided by the invention is high in reliability and pressure resistance.

Provided is a fluid injection device (10) capable of efficiently administering a drug. A first transport body (11) has a first transport flow path through which a first fluid (21) flows, and a second transport body (12) has a second transport flow path through which a second fluid (22) flows. Positive-side microneedles (13) provided to the first transport body (11) have a first opening and a first flow path to which a positive charge is fixed. Negative-side microneedles (14) provided to the second transport body (12) have a second opening and a second flow path to which a negative charge is fixed. When a current / voltage application means (15) applies a current or voltage between a first electrode (24) disposed in the first transport flow path and a second electrode (25) disposed in the second transport flow path, an ion current flows through the first fluid (21) and the second fluid (22), and the first fluid (21) flows from the first opening toward the outside and the second fluid (22) flows from the second opening toward the outside by electroosmotic flow.

The utility model discloses a microfluid device and a system for researching abnormal migration of solute of a fractured porous medium system. The microfluid device for studying abnormal migration of the solute of the fractured porous medium system comprises a chip and a substrate, wherein the lower surface of the chip is bonded with the upper surface of the substrate; a crack and a porous medium area distributed around the crack are patterned on the lower surface of the chip; the porous medium area comprises a plurality of cylinders, gaps are reserved among the cylinders, and flow channels communicated with the cracks are formed; and a part or all of the cylinders in the porous medium area are provided with notches serving as blind ends. The microfluid system for studying abnormal migration of the solute of the fractured porous medium system comprises a fluid injection device, the microfluid device and a fluid collection device which are connected in sequence.

The invention discloses a deep coal seam and geothermal resource combined mining method which comprises the following steps: S1, sample preparation: mixing different rock powders according to a particle size ratio, and pressing into a rock test piece; s2, preparing the device; loading the processed rock test piece into a supporting sleeve, then loading the supporting sleeve into a clamping structure, sealing through a sealing structure, then connecting an injection system and a temperature monitoring system with the clamping structure, and setting test conditions; s3, starting a test, injecting a fluid into the sample through an injection system to complete the test, and recording the temperature change condition of the test piece in the whole test process and the temperature change condition of the fluid flowing through the test piece at the same time; s4, repeating the test, respectively changing the proportion of the rock test piece, the heating temperature of the test piece, the injection pressure and the water injection rate, repeating the test, obtaining a heat exchange change rule in the hot dry rock mining process through comparison, simulating the coal seam water injection process through an indoor test, and analyzing the prevention and control effect of coal seam water injection by changing the water injection condition. And a basis is provided for improving the heat exchange efficiency.

The application discloses a kind of cross-tectonic period diagenesis simulation device and method.The device includes fluid driving system, reaction solution supply system and at least two groups of tectonic period reaction system connected in sequence, and different reaction systems are used to simulate the temperature and pressure conditions when geological fluid passes through each target layer during cross-tectonic period.The method first restores the geological conditions when geological fluid passes through each target layer during cross-tectonic period according to petrology and geochemistry analysis, combined with tectonic evolution history, burial history and fluid injection history, establishes cross-tectonic period diagenesis model, determines geological fluid type, and then determines the process of geological stress driving high-pressure layer fluid to migrate to low-pressure layer, restores the geological conditions when geological fluid passes through each target layer during cross-tectonic period;According to the restored geological process and geological conditions, the forward simulation of fluid dissolution, cementation, metasomatism and other diagenesis during cross-tectonic period is carried out by using cross-tectonic period diagenesis simulation device.Provide basis for judging the diagenetic mechanism of reservoir rock after high temperature and high pressure and multi-stage tectonic evolution.

The invention relates to the technical field of coalbed methane development engineering, and discloses a multi-layer stacked thin coal seam coalbed methane commingling production experimental device and method.The multi-layer stacked thin coal seam coalbed methane commingling production experimental device comprises a pressure cavity, coal rock physical models are arranged in the pressure cavity in the axial direction, and every two adjacent coal rock physical models are communicated; the fluid injection system comprises a plurality of fluid injection pieces, and the plurality of fluid injection pieces are respectively communicated with one ends of the plurality of coal rock physical models and are used for injecting fluid into the coal rock physical models; the fluid metering system comprises a plurality of metering pieces, the plurality of metering pieces are respectively communicated with the other ends of the plurality of coal rock physical models, and the plurality of metering pieces are communicated with one another; the processing system comprises a control and data analysis system and a signal acquisition and processing device, and the coal rock physical model, the fluid injection part, the metering part and the control and data analysis system are electrically connected with the signal acquisition and processing device. According to the method, the output characteristics of the multi-layer commingled production coal bed gas of the multi-layer stacked thin coal seam can be realized, and interlayer fluid channeling and fluid and pressure distribution rules can be quantitatively represented.

A compressor includes a housing, a first compression mechanism and a second compression mechanism disposed in the housing, and a housing cover fixed to the housing. Both the first compression mechanism and the second compression mechanism are configured to compress a working fluid from a suction pressure to a discharge pressure. The first compression mechanism includes a first cylinder housing having a first fluid storage plenum. The second compression mechanism includes a second cylinder housing having a second fluid storage plenum. The housing cover defines an intermediate-fluid port in fluid communication with the first fluid storage plenum via a first intermediate-fluid passage and the second fluid storage plenum via a second intermediate-fluid passage. Working fluid at an intermediate pressure enters the intermediate-fluid port. The intermediate pressure is greater than the suction pressure and less than the discharge pressure.

A combustor for a turbine engine. The combustor includes a fuel injector and a fluid injection system in fluid communication with the combustor. The fuel injector includes a mixer assembly with a pilot mixer and a main mixer. The pilot mixer and the main mixer operate during high power operation of the turbine engine. The fluid injection system injects a fluid into the combustor during high power operation of the turbine engine. The fluid is shut off during low power operation of the turbine engine and during mid-level power operation of the turbine engine.

The invention discloses a shale gas reservoir proppant fracture conductivity testing device and a using method, and relates to the technical field of petroleum engineering, the shale gas reservoir proppant fracture conductivity testing device comprises a conductivity testing device and a data acquisition module, and the data acquisition module is used for acquiring pressure data, flow data and temperature data in the testing process of the conductivity testing device. Pressure, flow and temperature data in the testing process are accurately acquired through the integrated data acquisition module, the actual stratum condition can be comprehensively simulated by combining a pressure applying device, a fluid injection and output system and oil liquid supply with the adjustable temperature in the flow guide testing device, and meanwhile, the flow guide testing device can be used for testing the pressure, the flow and the temperature. Through the arrangement of the upper fixing plate and the pressure applying device, the upper simulation rock stratum and the lower simulation rock stratum are used for clamping the proppant, and the pressure sensor is arranged in the proppant layer in an embedded mode, so that accurate testing and analysis of the fracture conductivity of the proppant are achieved, and reliable data support is provided for effective development of a shale gas reservoir.

The invention discloses a visual experimental device for simulating the migration process of plugging agent particles in rock fracture.The visual experimental device comprises a fluid injection system, a fracture fluid simulation system and a data collection system, the fluid injection system is connected with the fracture fluid simulation system, and the fluid injection system injects experimental base fluid into the fracture fluid simulation system; the crack fluid simulation system is used for placing a rock sample with cracks and through holes and enabling the rock sample to be soaked in the experimental base fluid, and the data collection system is used for recording the migration, accumulation and bridging process of particles of the experimental base fluid in the cracks of the rock sample. The migration, accumulation and bridging mechanism of the plugging agent particles in the crack under the real rock crack condition is explored, the understanding of the mechanical behavior of the plugging agent particles in the natural crack is improved, and an important theoretical basis is provided for drilling plugging site construction operation.

A fluid monitoring system includes at least one injection wellbore formed from a terranean surface into a subterranean formation; a fluid injection assembly configured to circulate a fluid through the at least one injection wellbore and into the subterranean formation; at least one monitor wellbore formed from the terranean surface into or near the subterranean formation, where the at least one monitor wellbore is separated from the at least one injection wellbore by the subterranean formation; at least one acoustic energy source positioned in the at least one monitor wellbore and configured to emit acoustic energy from the at least one monitor wellbore into the subterranean formation; and at least one acoustic energy receiver positioned in the at least one monitor wellbore and configured to receive acoustic energy reflected from the fluid circulated into the subterranean formation to the at least one acoustic energy receiver.

A valve assembly for downhole completion operations and method for using the assembly is described. The valve assembly relies on non-polymeric interfaces between the valve components for sealing the valves without elastomeric materials, thereby making the valve assembly suitable for high temperature well operations, such as 320° C. to 600° C. which are typically encountered in geothermal well operations. The valve assembly includes a first seat which receives an actuating member to actuate the opening of ports in the housing, thereby allowing for fluid injection into the formation adjacent the valve assembly through the ports. A seal assembly suitable for use in high temperature well operations is also described.

The invention discloses a saline water layer CO2 geological storage salting-out quantitative evaluation device and method. The saline water layer CO2 geological storage salting-out quantitative evaluation device comprises a fluid injection system, a rock core reaction system, a confining pressure system, a back pressure system, a pulse measurement system, a drainage system and a data analysis system. The fluid injection system, the confining pressure system, the back pressure system and the liquid drainage system are respectively communicated with the rock core reaction system, and the pulse measurement system and the data analysis system are respectively and electrically connected with the rock core reaction system. According to the embodiment of the invention, the rock core reaction system provides an experiment environment, the fluid injection system provides scCO2 and saline water required by an experiment, the pulse measurement system provides a sound wave signal for a rock sample, and the data analysis system analyzes various data acquired by the experiment and obtains a saline water layer CO2 geological storage salting-out quantitative evaluation result. And a scientific basis is provided for an injection process and storage safety of geological storage of CO2.

The present disclosure relates to a method for assessing injection of a fluid into a borehole (11) defined by a borehole wall (12) extending into a body (10), the method comprising: - initiating (S1) the injection of the fluid into the borehole (11) using a fluid injection arrangement, - detecting (S2) fluid outside the borehole (11) and the fluid injection arrangement (20) using a detection device (30), and - on the basis of at least one of the following: - a detected position of the detected fluid outside the borehole (11) and the fluid injection arrangement (20), - an injection volume of the fluid, and - a time lapse (TL) from the time of initiation of fluid injection into the borehole (11) to the time of fluid detection outside the borehole (11) and the fluid injection arrangement (20), assessing (S3) the injection of fluid.

The invention discloses a fluid injection induced earthquake experiment method under a true triaxial stress condition, which comprises the following steps of: manufacturing a cube rock model containing a fault, beveling to form a fault surface, arranging water injection and water pressure detection holes, injecting water to infiltrate the fault surface until the fault surface is saturated, applying three-way unequal stress by using a true triaxial device, and keeping the stress stable. Then, fault spontaneous instability is driven through displacement, the inter-earthquake instability period is calculated, finally, a circulating or constant-rate water injection scheme is set, industrial fluid activity is simulated, and a water injection induced earthquake mechanism is explored. The fluid injection induced earthquake experiment method under the true triaxial stress condition can accurately simulate the true stratum stress and the water injection condition, provides a reliable means for researching the water injection induced earthquake, and is of great significance for earthquake prediction, geological disaster prevention and control and related industrial safety.

The present invention seeks to protect a renal pelvic pressure monitoring device, which includes a ureteroscope, an operation channel is provided in the ureteroscope, the ureteroscope is used to enter the renal pelvis from the ureter, a pressure detection ring is arranged around the outer wall of the ureteroscope, a pressure measuring channel is provided on the pressure detection ring, a pressure measuring pipe is arranged in the pressure measuring channel, one end of the pressure measuring pipe is flush with the pressure measuring channel, and the other end extends outside the body and is connected to the pressure detector, and a fixing bag is arranged around the outer wall of the pressure detection ring, and the fixing bag is used to fix the position of the ureter. In summary, the above technical scheme has the following beneficial effects: the ureteroscope is consistent with the existing surgical soft mirror, and has functions such as lighting, lithotripsy and liquid injection. The pressure detection ring on the ureteroscope can detect the pressure after the liquid is injected into the renal pelvis, and then the pressure in the renal pelvis can be further adjusted by adjusting the injection speed and injection amount through the ureteroscope.

A kind of high temperature and high pressure conditions under the fracture of compacted rock permeation resistivity measuring device and method, including: core holder, fluid injection system, resistivity measurement system, pressure applying device and heating device;The device can be carried out under the condition of high temperature and high pressure simultaneously, simulate the fluid permeation process of fractured rock under different temperature and pressure conditions, wherein resistivity measurement system can measure the rock resistivity of permeation process in real time.The device has high measurement accuracy, the test result is intuitive, the device structure is simple, the sealing property, corrosion resistance and heat insulation effect are excellent, can be applied to rock fracture permeation resistivity measurement under different conditions, can quantitatively analyze the influence of temperature, pressure, fluid properties and rock fracture on rock permeability and resistivity, establish the mathematical model of the relationship between permeability and resistivity of fractured rock, can provide theoretical basis for geothermal development reservoir permeability resistivity prediction and evaluation.