113 results about "Fluid viscosity" patented technology

The invention relates to the technical field of industrial process automation control, and discloses an intelligent adjusting method for an industrial waste liquid low-temperature evaporation process, which comprises the following steps of: superposing pressure step test excitation to a vacuum adjusting valve, synchronously acquiring temperature response data flow, calculating absolute error integral and SIAE and reply time characteristics of a response curve, and calculating the temperature response data flow according to the absolute error integral and SIAE and reply time characteristics of the response curve; substituting into an inverse model to solve an equivalent process gain and a time constant of the controlled object; based on the internal model control principle, PID controller parameters are dynamically calculated and updated through the calculated gain and the time constant, a control law is reconstructed to generate an execution instruction, and the problem of control divergence of a non-linear time-varying object under model mismatch is solved through active energy feature identification and a pole assignment mechanism; decoupling control and self-adaptive adjustment of fluid viscosity sudden change and equipment scaling are achieved, and the stability and control precision of the system are improved.

The invention discloses a BUB bubble conveying system for a semiconductor production process and a control method, and belongs to the technical field of bubble conveying control, and the method specifically comprises the steps: in a fluid conveying pipeline of the semiconductor production process, generating a bubble group through a bubble generator, and adjusting the bubble generation frequency and volume distribution based on a liquid impedance feedback signal, the flow velocity, pressure and bubble distribution parameters of process liquid are collected, a pre-trained flow field prediction model is used for analyzing the bubble gathering trend, when the transmission retardation risk is detected, the opening degree of a micro valve is automatically adjusted, a bubble path is shunted, and a micro-pulse air pressure signal is applied to the throttling section of the semiconductor production process fluid conveying pipeline. Dynamically matching the bubble rupture phase with the fluid viscosity, and switching to a reverse bubbling mode to perform self-cleaning on the pipeline when detecting that the bubble residue exceeds a threshold value; linkage regulation and control of the multi-node micro valve are achieved, and the uniformity, repeatability and safety of fluid conveying can be kept in long-term operation.

The invention relates to the technical field of fluid automation control, and discloses a quantitative filling oil way control method and system based on reinforcement learning, and the method comprises the steps: firstly generating a physical reference opening instruction based on a fluid mechanics model; calculating a rheological hysteresis factor to identify the viscosity characteristic of the fluid by superposing a micro-disturbance signal and analyzing the downstream pressure frequency response; and constructing a flow velocity adaptive state vector by adopting equal-volume interval sampling, and inputting the flow velocity adaptive state vector into the reinforcement learning network to output residual correction. Meanwhile, dynamic transmission time lag is calculated according to the rheological hysteresis factor and the real-time flow velocity, and time axis causal alignment of flow rewards and historical actions is executed. And finally, synthesizing the reference instruction, the correction amount and the micro-disturbance signal, driving the regulating valve after water attack suppression logic constraint, and executing end point braking at the tail section. The problems of time-delay matching and sample distortion under the long-pipeline variable-viscosity working condition are solved, and the quantitative filling precision and the system stability are improved.

The invention discloses a thickener dosing control method and system, and relates to mineral processing. The method comprises the following steps: acquiring concentration values measured by an ith concentration sensor at different depths at a moment t; obtaining the turbidity T of the overflow water, the effective viscosity of the overflow water or underflow, the volume fraction of fine particles and the volume fraction of coarse particles in the overflow water, the Zeta potential of the feeding end, the Zeta potential of the overflow end, the time derivative of the Zeta potential of the overflow end, the equivalent diameter d of the particles, the density of the particles, the density of the fluid and the viscosity of the fluid; calculating the effective settling velocity of the particle swarm; carrying out online correction on the effective settling velocity by utilizing a least square method or a Kalman filtering algorithm; performing time lag correction on the concentration values at different depths by using the corrected effective settling velocity; correcting the turbidity T of the overflow water according to the corrected concentration profile; respectively calculating a flocculant dosing rate and a coagulant dosing rate; according to the invention, accurate cooperative control of the dosing rate of the flocculating agent and the coagulant is improved through the artificial intelligence model.

The invention relates to the technical field of first-aid medical engineering and intelligent medical equipment, and discloses a digestive tract hemorrhage patient liquid resuscitation decision support system which comprises a thermal wave signal generation and infusion execution module, a distributed thermal dispersion perception and vascular stiffness resolving module, a multi-physics field coupling modeling module and a double-target game decision control module. By superposing a micro-amplitude thermal wave signal in resuscitation liquid, the system calculates a vascular stiffness parameter of a patient in real time based on a thermal dispersion principle; and predicting the shear stress of the wall surface of the blood vessel at different flow velocities by utilizing a temperature change viscosity and blood vessel elastic mechanics coupling model. In decision control, the system determines the target flow velocity according to the microcirculation perfusion requirement, and reversely solves the required fluid dynamic viscosity according to the shear stress safety threshold value, so as to dynamically adjust the basic temperature of the infusion fluid. The fluid viscosity is reduced through physical field intervention, the high-flow-rate resuscitation requirement is met, meanwhile, the shear stress of the wall face of the blood vessel is effectively restrained, and the rebleeding risk is reduced.

The invention relates to a fractured rock thixotropic fluid seepage diffusion path characterization method, and belongs to the technical field of geotechnical engineering. The method comprises the following steps: constructing a fractured rock mass network geometric model based on geological exploration data; constructing a fluid seepage constitutive equation according to the thixotropic fluid characteristic parameters; grid division is carried out based on the constructed fractured rock mass network model, a one-dimensional fluid seepage channel is assembled, and dimension reduction solving of a complex problem is achieved; fluid pressure and fluid seepage velocity parameters are obtained through iterative solution, and a fluid characteristic parameter change rule is updated in real time; and generating and outputting a fluid seepage diffusion behavior tracking result under a set working condition based on the simulation state quantity. Compared with the prior art, the method has the advantages that the complex fluid diffusion rule caused by the thixotropic fluid viscosity time-varying characteristic can be accurately described, the method is suitable for accurate characterization of the grouting diffusion path in geological engineering, and a scientific basis is provided for optimizing construction parameters.

The invention relates to the technical field of petroleum and natural gas drilling engineering, and particularly discloses a multi-field coupled complex fractured formation fracture width distribution inversion method, which is characterized in that a drilling fluid leakage model considering a fluid-solid coupling effect is constructed based on a porous elastic mechanics theory, and a roughness correction factor is introduced to correct a traditional cubic law; the application of the Darcy law in the matrix is perfected, a matrix and crack coupled drilling fluid leakage mathematical model is established, the influence rule of key parameters such as fluid viscosity, pressure difference and crack width on the drilling fluid leakage amount is obtained through numerical simulation, and on the basis, the drilling fluid leakage amount is calculated. According to the method, the crack width multiple linear regression inversion equation with the fluid viscosity, the pressure difference and the accumulated leakage as independent variables is established, the inversion equation has high prediction precision and practicability and can be used for rapidly and accurately inversing the crack width on site, and theoretical and technical supports are provided for multi-scale fractured formation leakage mechanism understanding and leakage prevention and control optimization.

The invention relates to a low-permeability heavy oil composite nano oil displacement agent, which comprises a surfactant, fatty alcohol-polyoxyethylene ether, polyacrylamide, nano particles and water, and comprises the following components: 40%-60% of betaine, 10%-30% of fatty alcohol-polyoxyethylene ether, 20%-40% of polyacrylamide, 2% of nano particles (the particle size ranges from 5 nm to 50 nm), 0.1% of a pH regulator 0.01 and the balance of water. According to the composite nano oil-displacing agent disclosed by the invention, a stable nano particle solution is formed by optimizing the variety and proportion of the surfactant, the variety and proportion of the fatty alcohol-polyoxyethylene ether, the variety and proportion of the polyacrylamide and the variety, size and proportion of the nano particles through complex interaction among the components. The composite nano oil displacement agent is high in stability, and can change the wettability of rock, remarkably reduce the surface tension of an oil-water interface, improve the fluid viscosity, peel residual oil and weaken hydrogen bonds, so that the composite oil displacement agent can pass through a micro-capillary pore throat and enlarge the swept area. In the exploitation of low-permeability common thickened oil, the method can obviously improve the recovery efficiency, has excellent technical and economic advantages, and achieves an excellent effect in the practical application of a certain oil field.

The utility model discloses a magnetic suspension type pipeline fluid viscosity detection device, which relates to the field of liquid detection, and comprises a material conveying pipe and a rotary viscometer body, the side wall of the material conveying pipe is communicated with a material taking pipe, the upper surface of the material conveying pipe is fixedly connected with a detection box, and the lower side of the detection box is communicated with the material taking pipe through an L-shaped pipe. The piston is driven by the two shifting plates to move in the material taking pipe, then the threaded rod is rotated, the threaded rod is in threaded connection with the threaded sleeve to drive the plug cover and the piston to move together till the end opening connecting position of the material taking pipe is completely plugged by the plug cover, at the moment, part of flowing liquid enters the material taking pipe, and then through pushing and extracting, the material taking pipe is opened. The whole operation process is rapid and convenient, outward sampling is not needed, the sampling time of a traditional testing method is saved, normal conveying of materials is not affected, more importantly, waste of the tested materials is avoided, and practicability is improved.

A system for determining the flow properties of a fluid in a fluid unit, comprising: a light source configured to generate a plurality of optical signals; marker elements suspended in a fluid; a plurality of photonic units, each comprising a photonic element and a flow channel; and a measuring unit configured to: determine a first measurement based on the plurality of optical signals and the marker elements in a flow channel of a first photonic unit of the plurality of photonic units, determine a second measurement based on the plurality of optical signals and the marker elements in a flow channel of a second photonic unit of the plurality of photonic units, wherein the flow channel of the first photonic unit and the flow channel of the second photonic unit are fluidically connected.and a property relating to a flow of the fluid or the marker elements is determined based on the first and second measured values, wherein the determination of the property further comprises determining a macroscopic flow velocity (U) of a fluid containing the marker elements, wherein the macroscopic flow velocity (U) is determined as a function of a flow rate (Q) of the fluid through a cross-sectional area (A) of the fluid unit, wherein Q depends on an applied pressure gradient (VP) such that U = Q / A, wherein the determination of the property further comprises determining a permeability (κ) of a channel of the fluid unit as a function of a viscosity of the fluid (µ), the macroscopic flow velocity (U) and a pressure gradient VP such that κ = µU / (-∇P).

The invention discloses a method for predicting the erosion rate of a control manifold of an offshore oil and gas exploration well. The method comprises the following steps: constructing a support vector machine model; wherein the input parameters of the support vector machine model are the manifold diameter, the manifold bending angle, the fluid speed, the fluid density and the fluid viscosity, and the output parameter of the support vector machine is the maximum erosion rate of the well control manifold; optimizing penalty function coefficients and kernel function parameters of the support vector machine model by adopting a genetic algorithm to obtain an optimized support vector machine model; training the optimized support vector machine model to obtain a well control manifold erosion rate prediction model; and acquiring the manifold diameter, manifold bending angle, fluid velocity, fluid density and fluid viscosity of the to-be-predicted well control manifold, and inputting into the well control manifold erosion rate prediction model to obtain the maximum erosion rate of the to-be-predicted well control manifold. According to the well control manifold erosion rate prediction method provided by the invention, the maximum erosion rate of the well control manifold can be accurately predicted.

The utility model relates to a tubular static mixer. Comprising a tubular mixer main body and a plurality of mixing units which are sequentially arranged along the axial direction of the mixer main body, each group of mixing units comprises a group of spiral twisted blades and a splitter plate; the screw pitch and the twisting angle of the twisted blade are dynamically adjusted according to the fluid viscosity; a left-handed structure and a right-handed structure are arranged at the two ends of the mixing unit respectively and are connected in a cross shape through clamping grooves to form four flow channels; adjustable connectors are arranged at the two ends of each mixing unit and are used for adjusting the distance between the mixing units or replacing the modularized mixing units. The problems that in the prior art, a tubular static mixer still has a certain improvement space in the aspects of mixing efficiency, applicable fluid type range, blockage prevention and the like, for example, when some fluids with large viscosity difference are mixed, ideal mixing uniformity is difficult to achieve, meanwhile, a mixing element is prone to blockage, and the mixing efficiency is poor are solved. And normal operation of equipment is influenced.

The present invention relates to a dispersion comprising i) a dispersant; ii) at least one polythiophene dispersed in the dispersant i); and the Ostwald de l / l / ae / e relationship for the dispersion. T =Ky n The exponent n in the power law is in the range of 0.62 to 0.92. T The present invention relates to a dispersion in which is the shear stress, K is the fluid viscosity constant, Y is the shear rate dy / dt, and the dispersion has a solid content of at least 1.5% by weight based on the total weight of the dispersion. The present invention also relates to a process for preparing a dispersion, a dispersion obtained by the process, a process for preparing a laminate, a laminate obtained by the process, and the use of the dispersion for forming a solid electrolyte layer in a capacitor.

This invention provides a circular caisson resonant pool combination structure, comprising an upper circular caisson, a lower circular caisson, and a resonant pool. The upper and lower circular caissons are stacked, with the resonant pool positioned on their rear sides. The wave-facing sides of both the upper and lower circular caissons are arc-shaped curved surfaces, and the top-view outline of the upper caisson overlaps that of the lower caisson. Along the wave-facing direction, the upper and lower circular caissons are staggered with the resonant pool. This invention, through its two-layer stacked circular caisson and resonant pool combination structure, achieves superior stress performance, reduces wave reflection, and significantly weakens wave energy accumulation through scattering, maintaining a stable harbor surface. Addressing the strong penetrating characteristics of medium- and long-period waves, the resonant pool allows the internal fluid to approach a resonant state, utilizing fluid viscosity and vortex structures to dissipate wave energy, further enhancing the wave-damping effect.

A fluid ejection head that includes a semiconductor substrate containing a plurality of fluid ejectors thereon and a fluid supply via etched therethrough. A flow feature layer is attached to the semiconductor substrate. The flow feature layer has a plurality of fluid channels and fluid chambers for the plurality of fluid ejectors, wherein the fluid channels are configured to provide fluid from the fluid supply via through the fluid channels to the fluid chambers for ejection of fluid through fluid nozzles associated with the fluid chambers. The fluid channels further include inlet channels and expansion channels that are configured to compensate for fluid viscosity variations. A nozzle plate containing the fluid nozzles is attached to the flow feature layer.

The application discloses a kind of based on NiTi alloy's chip liquid cooling plate flow channel topological optimization design method, comprising: obtaining chip heat source distribution, determine two-dimensional design domain and establish flow-thermal coupling numerical model;Determine material, environment and boundary parameter;Based on solid isotropic material interpolation format, express physical property parameter as the function of design variable, construct topological optimization mathematical model;With minimum fluid viscosity energy dissipation rate and design domain average temperature as joint target, with fluid volume fraction and temperature interval as constraint, carry out iterative solution, obtain two-dimensional optimal flow channel topological configuration.Wherein, NiTi shape memory alloy unit is arranged on the wall surface of flow channel, adaptive flow regulation based on temperature sensing can be realized.The application realizes the collaborative optimization of heat dissipation performance and flow resistance, can effectively suppress hot spot, and design efficiency is high.

The application discloses a high-hydrogen silicone oil mixing device for building ceramic antifouling agents, which is characterized by the following technical scheme: a stirring cylinder is arranged on a support frame; a feeding port and a discharging port are arranged on the side and bottom end of the stirring cylinder respectively; a raw material temporary storage cavity is arranged on the upper half side of the stirring cylinder; the feeding port is communicated with the raw material temporary storage cavity; a first motor is arranged on the top of the stirring cylinder; the first motor is connected with a stirring shaft; a stirring intensity adjusting mechanism is arranged on the stirring shaft; the stirring intensity adjusting mechanism comprises a shell fixed on the stirring shaft; a filter screen is horizontally slidably arranged in the shell; a first gear rack is fixedly connected to the filter screen; a first spring is arranged between the end of the first gear rack and the shell; a first spur gear is rotatably arranged on the sidewall of the shell; the first spur gear is meshingly connected with the first gear rack; the rotating shaft of the first spur gear penetrates through and extends into the stirring shaft; and an adjusting plate is connected with the first spur gear through a gear mechanism. According to the application, the stirring intensity and the raw material supplementing amount are automatically adjusted according to the fluid viscosity, so that the stirring is stable and uniform.

The application discloses a kind of drilling fluid viscosity detection device and method, belong to drilling fluid viscosity detection device technical field.A kind of drilling fluid viscosity detection device and method, including fixed pedestal, fixed pedestal rear side top surface is equipped with support plate, support plate upper end is equipped with top seat, top seat rear side top surface is equipped with rotating rod, rotating rod front side is equipped with pressure rod, fixed pedestal front side upper end is equipped with hopper, hopper upper end rear side inside is equipped with filter, moving plate left side is equipped with adjusting plate, fixed pedestal left end upper side is equipped with stopwatch, fixed pedestal upper end front side is equipped with top rod, fixed pedestal upper side is equipped with placing plate, placing plate front end upper side is equipped with measuring cylinder, by setting top plate, can be placed funnel, do not need manual holding, more labor-saving, simultaneously using pressure rod, can play to the fixation of funnel, positioning block on funnel is convenient for the quick positioning of funnel, convenient and fast, simultaneously, the use of electrical components of this device is reduced, greatly reduces manufacturing cost, so that the selling price is more popular, it is convenient for promotion.

The utility model discloses a kind of honeycomb beam-column interseismic structure, including vertical column, horizontal crossbeam is connected on the vertical column, anti-seismic mechanism is arranged between the vertical column and horizontal crossbeam, the anti-seismic mechanism includes triangular support frame, slot and fixed slot, the triangular support frame is connected with plug-in block, the plug-in block is inserted in the inside of fixed slot, plug-in block is connected with locating block, internal thread hole is opened on the locating block.The utility model fills in the frame of triangular support frame by honeycomb array module formed by the interlaced stacking of multilayer regular hexagon honeycomb unit, shear thickening fluid is injected in its honeycomb unit, the structure is deformed by the three-stage energy dissipation mechanism of elastic deformation, plastic buckling and fluid viscosity of honeycomb unit, cooperate plastic hinge deformation of triangular support frame, realize efficient anti-seismic, honeycomb hollow design makes component weight reduction more than 45%, and only damaged honeycomb module needs to be replaced after earthquake, and it can be quickly repaired.

The utility model discloses a kind of stirring devices for automobile interior surface treating agent, including stirring container and apron, the apron is provided with vacuum hole, the vacuum hole is connected vacuum pipe, the vacuum pipe is connected vacuum pump assembly, the top of apron is equipped with first motor, the first motor connects stirring assembly, the stirring assembly includes stirring rod, the stirring rod is provided with spiral stirring vane and anchor stirring vane, the apron is driven by linear drive assembly. The utility model stirring assembly integrates spiral stirring vane and anchor stirring vane, combined use, give consideration to radial flow and axial flow, can give full play to the advantage of both, make up the limitation of single design, combination design optimizes fluid flow, motor load is more balanced, improve stirring quality while reducing energy consumption, vacuum by vacuum pump assembly, fluid viscosity dynamic reduces under vacuum environment, improve stirring mixing uniformity.

1. The name of the design product: viscometer (KU viscometer BEVS1133U). 2. The use of the design product: instrument for measuring fluid viscosity. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention provides a spanwise length prediction method for numerical calculation of cylindrical streaming of oscillatory flow, and belongs to the field of computational fluid mechanics. According to an oscillatory flow incoming flow velocity field, a cylinder diameter and fluid viscosity of a to-be-simulated problem, a two-dimensional oscillatory flow cylinder streaming numerical calculation model is established based on a direct numerical simulation method, and a fully developed two-dimensional periodic base flow is obtained; and further based on a Floquet stability analysis method, establishing a three-dimensional stability analysis model, applying linear perturbation of different wavelengths to the base flow, and obtaining a relation curve of a Floquet multiplier mu and a wavelength lambda by solving a linearized Navier-Stokes equation, thereby determining a characteristic wavelength lambda enabling the mu to be the maximum value, and taking the characteristic wavelength lambda as the spanwise characteristic length of cylindrical streaming of the oscillatory flow under the working condition. According to the method, a theoretical basis is provided for setting of the spanwise length in three-dimensional numerical simulation, the precision and reliability of oscillating flow cylinder streaming numerical simulation are effectively improved, and the method is suitable for hydrodynamic analysis and design of structures such as a floating tunnel in ocean engineering.

This application relates to the technical field of pipe-segment ultrasonic flow measurement methods, and more specifically, to a pipe-segment ultrasonic flow measurement method and system based on multi-parameter coupled dynamic compensation. It includes the following steps: data acquisition and preprocessing; constructing a multi-level dynamic compensation model for sound velocity: compensating and correcting the sound velocity based on temperature, fluid viscosity, and pipe wall roughness to establish a multi-level dynamic compensation model for sound velocity; then performing ultrasonic flow velocity calculation: calculating the ultrasonic measurement velocity based on the calculated compensated sound velocity c; calculating the Reynolds number to classify the flow regime; generating a velocity distribution coefficient based on the flow regime; and flow compensation output: calculating the compensated instantaneous flow rate based on the velocity distribution coefficient and the ultrasonic flow velocity. This invention significantly improves measurement accuracy by dynamically correcting the sound velocity and velocity distribution coefficient by real-time fusion of parameters such as temperature, viscosity, Reynolds number, and pipe material characteristics.

The application relates to the technical field of fluid regulation, and discloses a flow adaptive compensation control method for a fluid conveying object, which comprises the following steps: obtaining a rated flow given value of a flow regulation loop, superimposing a carrier excitation signal of a preset frequency, outputting a combined excitation signal to a flow regulation execution unit, exciting a perturbation fluctuation signal carrying dynamic physical characteristics in a fluid pipeline, collecting a feedback flow signal in real time and extracting a same-frequency response component, calculating a response transmission ratio representing a physically effective bandwidth of the controlled pipeline, reconstructing a regulation gain of a flow adaptive control law according to the numerical fluctuation of the response transmission ratio, correcting the rated flow given value by using the regulation gain, and outputting a flow compensation instruction to the flow regulation execution unit. The application establishes a coupling mechanism of the control law and the pipeline physical constraint, effectively solves the regulation deviation caused by the viscosity drift of the fluid, and eliminates the pump body surge or dynamic pressure shock fluctuation induced by the regulation overshoot.

The utility model belongs to the technical field of drilling fluid, and particularly relates to a feeding device of a liquid lubricant for drilling fluid, which comprises a bottom table. Supporting columns are fixedly connected to the bottom of the bottom table, universal wheels are fixedly connected to the bottoms of the supporting columns, a material tank is fixedly connected to the middle of the top of the bottom table, a precise control device is fixedly connected to the other side of the top of the material tank, and a stirring device is arranged in the middle of the material tank. The surface of the stirring device is fixedly connected with a cleaning device, and the inner wall of the middle part of the bottom of the material tank is fixedly connected with a liquid inlet pipe; through the arrangement of the precise control device, it is ensured that the amount of a lubricant injected every time is accurate, real-time monitoring and adjusting can be achieved, the situation of excessive or insufficient feeding can be effectively prevented, the stability and reliability of the drilling fluid performance are ensured, and therefore the situation that the viscosity, the lubricating effect and the like of the drilling fluid are changed due to improper feeding can be avoided; and smooth drilling operation is ensured.

The invention discloses a device for testing the influence of fluid viscosity on the precision of Coriolis flow meters, and relates to the technical field of fluid measurement and testing equipment.The device comprises two Coriolis flow meters, the end of one Coriolis flow meter is connected with a viscosity adjusting assembly, and the viscosity adjusting assembly comprises a mounting shell; a magnetic driving assembly is mounted on the outer wall of the mounting shell, a rotating assembly is rotationally connected to the interior of the mounting shell, the rotating assembly is fixedly connected with a shearing assembly, the shearing assembly is slidably connected with a heating assembly, and a magnetic induction assembly is coaxially mounted on the shearing assembly. Non-contact synchronous driving of an internal rotating assembly is achieved, a Rifle sleeve is driven to do spiral linear movement, switchable contact between a heating cylinder and fluid or a shearing assembly is achieved, and two physical action environments of a pure heat heating field and a rotary shearing disturbance field can be constructed through bidirectional regulation and control of a brushless motor; and the regulation and control precision and the functional diversity of the experimental device are enhanced.

The invention discloses a horizontal well inter-section interference coefficient calculation method integrating multiple factors. The method comprises the steps that differential pressure, permeability, fluid viscosity, interlayer distribution and injection-production ratio data are collected; calculating a permeability variation coefficient, a viscosity ratio and an injection-production ratio deviation coefficient; calculating a permeability difference, a fluid viscosity difference, oil reservoir heterogeneity and a well pattern arrangement correction coefficient according to correction coefficients determined by experiment or historical data; calculating a traditional inter-segment interference coefficient based on the pressure difference; and integrating the correction coefficient and the pressure difference coefficient to obtain a multi-factor inter-segment interference coefficient, and the like. According to the method, the calculation precision is remarkably improved, scientific decision is supported, parameters can be flexibly adjusted to adapt to different oil reservoir environments, inter-section interference is effectively reduced, and the recovery efficiency is improved.

The invention discloses an electroosmosis drying mixer and a use method thereof, and relates to the technical field of electroosmosis drying mixing. A storage chamber is formed in the mixer, the titanium alloy electrode group is arranged on the outer wall of the mixer, the vibrating viscometer is arranged in the storage chamber, the control host is electrically connected with the vibrating viscometer and the titanium alloy electrode group, and the control host receives a viscosity signal of the vibrating viscometer. The intensity and the frequency of an alternating electric field applied to the titanium alloy electrode group are adjusted through a self-adaptive algorithm, so that the mixing efficiency is improved; the problem that a traditional mixer is low in efficiency is solved. A closed-loop control system is adopted, and the fluid viscosity is detected in real time through a built-in vibration type viscometer. And when the viscosity is lower than a set threshold value, the self-adaptive algorithm of the control host can automatically enhance the intensity and frequency of the electric field applied to the electrodes, and a chaotic flow field is generated by utilizing an electroosmosis effect, so that the mixing efficiency is remarkably improved.

This invention relates to a method for calculating oil friction loss in the rotor of a high-speed oil-filled motor, belonging to the field of motors. The method involves: establishing a finite element simulation model coupling the electromagnetic and temperature fields of the motor; using this model to obtain a multivariate functional relationship with the motor's optimizeable parameter [E] as the independent variable and the motor's operating temperature T as the dependent variable; establishing a composite functional relationship between fluid viscosity and the motor's optimizeable parameter [E]; based on the analysis mechanism of fluid-rotor friction loss, obtaining the functional relationship between Reynolds number Re and fluid viscosity, and the functional relationship between Reynolds number Re and the motor's optimizeable parameter [E]; combining the analytical expression of Reynolds number Re to obtain an analytical calculation model for fluid friction loss; setting an axial flow velocity in the simulation model, comparing it with the analytical calculation results, and introducing a correction coefficient to obtain an analytical calculation model for oil friction loss considering axial flow; and using the multivariate function extremum theory to obtain the relationship between oil friction loss and the motor's optimizeable parameter [E]. This invention is used for calculating oil friction loss in the rotor of a high-speed oil-filled motor.

The invention discloses an overpressure elimination detection method and equipment in a formation testing process, and the method comprises the steps: S1, pumping a certain volume of formation fluid at a fixed speed, expanding a flow line, enabling a pressure gauge in the flow line to be stable, and determining that an instrument seat is effective; s2, under the condition that the instrument setting is effective and the drilling fluid is isolated, continuously sucking the formation fluid in unit volume for multiple times at the pump speed from low to the pump speed, enabling the pumping flow pressure of each time to be stable, and recording the stable flow pressure and the fluid viscosity of each time; and S3, according to the steady flow pressure and the fluid viscosity of each time, whether the difference value between the formation pressure and the steady flow pressure under the current pumping condition and the next pumping condition meets a threshold value or not is calculated, and when the difference value meets the threshold value, it is represented that the overpressure is eliminated, and pumping is stopped. The problem how to eliminate the overpressure phenomenon caused by pressure rise of a near wellbore zone due to drilling fluid invasion is solved, and the balance efficiency of near wellbore pressure and formation pressure is improved.