10 results about "Capillary number" patented technology

The invention relates to a glass capillary microscopic flaw detection method and system, and relates to the field of material nondestructive testing, and the method comprises the following steps: collecting a capillary detection signal; when the capillary detection signal is consistent with the detection starting signal, collecting a capillary serial number; determining a sound detection number according to the capillary number; obtaining a standard reaction characteristic based on the capillary serial number and the sound detection serial number; generating and transmitting a corresponding sound wave signal to the capillary tube based on the sound detection number, and collecting sound reaction characteristics; when the sound reaction characteristics are inconsistent with the standard reaction characteristics, controlling vibration auxiliary equipment to apply auxiliary vibration to the capillary tube, and collecting post-vibration sound reaction characteristics; if the post-vibration sound reaction characteristics are inconsistent with the sound reaction characteristics, a capillary tube cleaning prompt is reported; if the after-vibration sound reaction characteristics are consistent with the sound reaction characteristics, capillary tube defect prompts are reported. The method has the effect of improving the detection accuracy of the glass capillary.

The invention provides a CO2-water / salt water displacement interface instability characterization system and method based on a microfluidic technology, and belongs to the field of carbon dioxide salt water layer sealing. According to the invention, a micro-fluidic chip with specific pore structure characteristics is designed, a micro-fluidic visual experiment system based on an inverted microscope is established, and characterization parameters including capillary number, viscosity ratio, fractal dimension and the like are extracted by carrying out digital processing on continuously collected image sequences; the interface evolution characteristics of CO2 displacement water / salt water are described through the capillary number and the viscosity ratio, and the interface complexity is quantitatively described by means of fractal dimensions so as to reflect the instability of the interface. According to the method, the interface instability in the displacement process is converted into a numerical value capable of being accurately predicted from traditional qualitative description, the influence mechanism of the pore structure, the viscosity ratio, the capillary tube number and the like on the interface instability can be visually revealed, and key data support is provided for CO2 geological sequestration evaluation.

The invention discloses a condensate gas reservoir horizontal well reverse condensation multiphase flow pseudo-pressure determination method. The method comprises the following steps: determining relative permeability of a gas phase and an oil phase under different pressures based on well flow component data of a condensate gas reservoir horizontal well; determining the gas phase relative permeability under irreducible water saturation based on the relative permeability curve of the condensate gas reservoir horizontal well; correcting the gas phase relative permeability under different pressures and the gas phase relative permeability under irreducible water saturation based on a capillary number effect and a high-speed non-Darcy effect generated by the seepage velocity of condensate gas in the condensate gas well; and based on the oil phase relative permeability under the different pressures, the corrected gas phase relative permeability under the different pressures and the corrected gas phase relative permeability under the irreducible water saturation, utilizing a three-region pseudo-pressure equation to determine the pseudo-pressure of the three regions of the condensate gas well. The pseudo-pressure of the condensate gas reservoir can be calculated more accurately, and a necessary basis is provided for subsequent productivity evaluation and reasonable and efficient development of the condensate gas reservoir.

When laser-irradiation portions of N capillaries with capillary numbers n=1, 2, . . . , and N are arranged on a same plane, a laser-irradiation intensity of each capillary is denoted by L(n), and an output intensity of each capillary by a computer when a light emitting substance having an equal concentration exists inside each capillary is denoted by H(n), an absolute value of an average value of a second derivative of H(n) becomes smaller than an absolute value of an average value of a second derivative of L(n) for any refractive index n3 of a separation medium in a range of 1.33≤n3≤1.41 by digital correction by the computer, which changes according to the refractive index n3 (see FIG. 11).

The present disclosure provides a film for a cell pouch including a first resin layer, a metal layer, and a second resin layer, in which a surface treatment layer is included between the first resin layer and the metal layer, and the surface treatment layer has a capillary number of 0.5 to 5. The present disclosure also provides a method for manufacturing a film for a cell pouch including a first resin layer, a metal layer, and a second resin layer, the method including: forming a surface treatment layer on the metal layer and forming the first resin layer on the surface treatment layer, in which the surface treatment layer has a capillary number of 0.5 to 5.

The invention provides a capillary array electrophoresis device. The laser irradiation units of N capillary tubes having capillary tube numbers n = 1, 2,..., N are arranged on the same plane, and when the laser irradiation intensity of each capillary tube is set as L (n) and the output intensity of each capillary tube obtained by a computer when a light-emitting substance having the same concentration is present in each capillary tube is set as H (n), the laser irradiation intensity of each capillary tube is set as L (n) and the output intensity of each capillary tube is set as H (n). The absolute value of the average value of the second derivative of H (n) is made smaller than the absolute value of the average value of the second derivative of L (n) for any refractive index (n3) on the basis of digital correction obtained by a computer that varies in accordance with the refractive index (n3) of the separation medium (1.33 < = n3 < = 1.41) (fig. 11).

The application discloses a kind of based on dimensionless array combination's heavy oil steam flooding main control factor analysis and recovery factor prediction method.The method includes: obtaining fluid property, interface property and core physical property parameter;Carry out heavy oil steam flooding experiment under different working conditions, obtain recovery factor data;Capillary number, bond number and gravity number are calculated, the relative action of viscous force, capillary force and gravity is characterized;Dimensionless array combination parameter including bond number, capillary number and viscosity ratio before and after oil displacement is constructed;Quantitative prediction model of recovery factor and dimensionless array combination parameter is established by determining correction coefficient through experimental data regression;The model is applied to the recovery factor prediction and process parameter optimization of steam drive under different preheating temperature, steam dryness, injection speed and injection dip angle and other working conditions.The application realizes the unified quantitative characterization of heavy oil steam flooding multi-acting force, establishes recovery factor quantitative prediction method, and provides theoretical basis for steam drive development plan optimization.

This invention provides a system and method for analyzing the relationship between capillary number and energy loss. It relates to the field of reservoir development experimental technology. The system includes: a confining pressure and core holding module, comprising at least two core holders connected in series, and pressure monitoring units located at the inlet and outlet of each core holder; each core holder holds a core sample containing pre-fabricated fractures filled with proppant, and the core samples are arranged sequentially along the displacement direction in descending order of proppant density; an injection module for injecting displacement fluid into the confining pressure and core holding module; a backpressure module for acquiring the backpressure of the outflowing displacement fluid from the confining pressure and core holding module; and a data acquisition and processing module, connected to the pressure monitoring unit and the backpressure module, for acquiring differential pressure data at the inlet and outlet of each core holder and velocity data of the outflowing displacement fluid, and obtaining the energy loss and capillary number corresponding to each core holder based on the differential pressure data and velocity data; and establishing a capillary number-energy loss chart.

The application discloses a kind of based on correction capillary number thickened oil water drive main control factor analysis and recovery factor prediction method.The method includes: obtaining fluid property parameters, interface property parameters and core physical property parameters in thickened oil water drive process;Carry out thickened oil water drive experiment under different working conditions, obtain recovery factor data;Calculate correction capillary number, the correction capillary number includes oil-water viscosity ratio and core physical property parameters, for representing the relative action of viscous force and capillary force under high oil-water viscosity ratio condition;Quantitative prediction model between recovery factor and correction capillary number is established by determining correction coefficient through experimental data regression;The model is applied to thickened oil water drive recovery factor prediction and injection parameter optimization under different injection rates, temperature and permeability conditions.The application realizes the unified quantitative characterization of thickened oil water drive main control force under high oil-water viscosity ratio condition, establishes recovery factor quantitative prediction method, and provides theoretical basis for thickened oil water drive development plan optimization.

The invention provides a medium Reynolds number viscoelastic liquid film fluctuation stability simulation method and device, and the method comprises the steps: carrying out the nondimensionalization processing of related parameters, and obtaining nondimensionalized parameters; based on the dimensionless parameters, performing dimensionless processing on each equation and condition; respectively substituting the scaled capillary number and Reynolds number into the x-direction momentum equation, the y-direction momentum equation and the normal stress balance condition which are subjected to dimensionless processing, and removing a small quantity by using magnitude analysis to obtain a second x-direction momentum equation, a second y-direction momentum equation and a second normal stress balance condition; a small amount is removed through magnitude analysis; obtaining a differential equation set; based on different mass jump flows, evaporation rates and capillary numbers, a curve of the disturbance instability growth rate changing along with the wave number and a neutral stability curve of the critical wave number changing along with the Reynolds number are obtained, and the influence rule of physical property and environmental parameters on the fluctuation stability of the viscoelastic liquid film with the medium Reynolds number is determined.