17 results about "Mercury intrusion" patented technology

This invention provides a quantitative calculation method for reservoir throat length based on constant-rate mercury intrusion porosimetry (CRMP) experiments, belonging to the field of oil and gas field development data information processing technology. The method includes: calculating the endpoint values ​​of the mercury intrusion intervals of each throat level based on CRMP experimental data; determining the mercury intrusion saturation of each throat level based on the endpoint values ​​of the interval radius and the mercury intrusion curve data determined by CRMP experiments; obtaining the mercury intrusion volume of each interval based on the calculated mercury intrusion saturation and the pore volume of the rock sample; calculating the mercury intrusion volume of a single throat interval using the interval mercury intrusion volume and the number of throats; and finally, quantitatively calculating the length of each throat level based on the throat radius. This invention provides a quantitative calculation method for throat length, offering a new technical approach for determining reservoir throat length and providing strong data support for research on reservoir throat length and its variation patterns, reservoir throat geometry, and reservoir throat network simulation.

The purpose of the present invention is to provide an exhaust gas purification catalyst capable of improving exhaust gas diffusivity and reactivity with respect to diffused exhaust gas, and to provide an exhaust gas purification catalyst (1) provided with a metal honeycomb substrate (10) and a catalyst layer (20) provided on the metal honeycomb substrate (10), the catalyst layer (20) contains a noble metal element, Ce-based oxide particles, and Ce-Zr-based composite oxide particles, and in a logarithmic differential pore volume distribution curve of the catalyst layer (20) obtained by a mercury intrusion method, a first peak value is present in the range of a pore diameter of 5-15 nm inclusive, a second peak value is present in the range of a pore diameter of 200-3200 nm inclusive, the first peak value is 0.060 mL / g or more, the second peak value is not less than 0.060 mL / g, and the third peak value is not less than 0.060 mL / g. The second peak value is 0.018 mL / g or more.

1. A method for making a ceramic honeycomb wall-flow filter substrate supporting an on-wall coating, wherein a section of the on-wall coated filter substrate analyzed by mercury porosimetry has a pore volume of 0.05 to 0.5 μm diameter as a percentage of the mercury intrusion volume of at least 15.0% of the section, and (i) an equivalent spherical diameter D(v,0.5) of 0.5 to 1 μm, which is equal to 10 to 35 wt. % of water, carboxylic acid, inorganic oxide particles, or a particulate insoluble cellulose pore former of heterogeneous morphology, with D(v,0.9) of 8 to 20 μm, relative to 100 wt. % of inorganic oxide particles. 4 μm and having a modal aspect ratio (width / length) of 0.3 to 0.9; (ii) coating the slurry onto at least first channels of a substrate, the substrate having an average pore size (D50) of 6 to 15 μm and a porosity of less than 60% before any coating; and (iii) drying and calcining the slurry-coated substrate, wherein the product of step (iii) has a porosity of 0.07 to 0.4 g / in based on the substrate weight before step (ii). 3 A method wherein sufficient slurry is coated onto a substrate to have a coating loading of (4.3-24.4 g / L) and an average on-wall coating thickness of the coated substrate is 5-70 μm.

The adsorption filter according to the present invention is formed from a molded body including activated carbon and a binder, the pore volume of pores having a diameter of 10 μm or greater in terms of the volume of the adsorption filter as measured through mercury intrusion being 0.10 cm3 / cc to 0.39 cm3 / cc.

A zirconia powder containing a stabilizer, and having a specific surface area of 20 m2 / g or more and 60 m2 / g or less and a particle diameter D50 of 0.1 μm or more and 0.7 μm or less, in which in a range of 10 nm or more and 200 nm or less in a pore distribution based on a mercury intrusion method, a peak top diameter in a pore volume distribution is 20 nm or more and 85 nm or less, a pore volume is 0.2 ml / g or more and less than 0.5 ml / g, and a pore distribution width is 40 nm or more and 105 nm or less.

The invention belongs to the field of unconventional tight sandstone gas reservoir exploration, and discloses a tight sandstone reservoir evaluation method based on high-pressure mercury injection, which comprises the following steps: (1) selecting high-pressure mercury injection experimental data of a tight sandstone reservoir in a research area, and analyzing; (2) establishing a pore-throat distribution curve, classifying experimental results according to a curve form, and determining porosity and permeability distribution ranges corresponding to different types of reservoirs; and (3) reading the pore-throat size corresponding to the pore-throat distribution peak value, making a cross plot of the pore-throat peak value, the porosity and the permeability, and analyzing the influence of pore-throats of different types and sizes on reservoir conditions. Through the method, the influence of pores-throats of different sizes on rock reservoir conditions can be determined, the method has very sufficient basic data support, has positive significance in accurately and considerably evaluating the compact sandstone reservoir, and provides reference for prediction of high-quality reservoirs.

The goal is to enhance the reactivity of the reaction gas by minimizing pressure loss during the flow of the reaction gas while ensuring the efficiency of the reaction site and heating the reaction site. [Solution] The microwave heating element comprises a porous ceramic body that generates heat upon microwave irradiation. The porous ceramic body has a first peak with the largest peak value and a second peak smaller than the first peak in the differential pore volume distribution when the pore size distribution is measured by the mercury intrusion method. One of the first and second peaks is located in the range of pore diameters between 5 μm and 100 μm, and the other of the first and second peaks is located in the range of pore diameters of 1 μm or less.

This plug for a flavor inhalation article comprises a filler. The filler is formed of a sheet-shaped material. When pores inside the plug for a flavor inhalation article are measured by applying a mercury intrusion method to the plug for a flavor inhalation article where the contact angle θ of mercury is 140° and the tension σ of mercury is 0.480 dyn / cm, the pore diameter D of pores into which mercury is intruded at a pressure P is expressed by a value obtained by formula (1) (D = -4σ cosθ / P). During the time in which the pressure P is increased from 1.07 Psia to 423.15 Psia, when a first pore diameter corresponding to the pressure P at which mercury is intruded to a volume equal to 10% of the total volume to which mercury is intruded is D10, a second pore diameter corresponding to the pressure P at which mercury is intruded to a volume equal to 50% of the total volume is D50, a third pore diameter corresponding to the pressure P at which mercury is intruded to a volume equal to 90% of the total volume is D90, and an index S is the value obtained by formula (2) (S = (D10 - D90) / D50), the index S is 2.0 or less.

This invention provides a method, system, device, and storage medium for predicting sandstone permeability. The method includes: acquiring a first or second permeability prediction model; acquiring the geometric mean of the pore radius or the NMR T2 distribution within the range of transverse relaxation time >40ms corresponding to a cumulative mercury saturation of 20% for the target sample, as well as the cumulative mercury saturation distribution of the high-pressure mercury intrusion pore size or the cumulative percentage distribution of the NMR pore size; acquiring the lower limit of the pore size of the movable fluid storage space of the target sample and using it as the boundary point for fractal analysis; combining the aforementioned cumulative mercury saturation distribution of the high-pressure mercury intrusion pore size or the cumulative percentage distribution of the NMR pore size to determine the first or second fractal dimension of the target sample; determining the permeability of the target sample using the first permeability prediction model based on the aforementioned pore radius and first fractal dimension, or determining the permeability of the target sample using the second permeability prediction model based on the aforementioned geometric mean and second fractal dimension.

A porous honeycomb structure including cordierite, having a plurality of cell channels which pass through an interior of the porous honeycomb structure and are partitioned by porous partition walls, wherein the porous partition walls have a porosity of 45 to 60% as measured by a mercury intrusion method, wherein in a volume-based cumulative pore diameter distribution measured by the mercury intrusion method, the porous partition walls have a cumulative 10% pore diameter (D10) and a cumulative 50% pore diameter (D50) calculated from a small pore side, and satisfy a relationship of 0.45≤(D50−D10) / D50, and 3 μm≤D50≤10 μm.

The invention relates to a method and a process for fractal analysis and characterization of dense sandstone pore throat structure heterogeneity, and the method integrates two aspects of pore size distribution heterogeneity and pore throat shape heterogeneity of reservoir pore throats aiming at the characteristic that dense sandstone reservoir pore throats are small and complex. A pore throat radius distribution fractal dimension weighted average result of mercury intrusion test data is utilized to characterize pore throat radius data distribution heterogeneity, slice image multi-fractal spectral width is utilized to characterize pore throat shape heterogeneity, and two heterogeneity parameter charts are established to characterize heterogeneity of a reservoir pore throat structure. According to the method, the pore throat radius and pore throat form factors are comprehensively considered, and compared with a traditional method, the method is simple, convenient and feasible, and the result is visual.

The present application belongs to the technical field of coal seam CO2 geological storage, and proposes a coal seam CO2 geological storage caprock breakthrough pressure prediction method and system based on mercury injection fractal theory, which comprises obtaining the mercury injection experiment data of the target caprock of CO2 geological storage; based on the mercury injection experiment data, the fractal dimension is calculated, and the mercury injection process is divided into multiple continuous stages according to the change characteristics of the fractal dimension; the critical stage corresponding to the pore structure being penetrated by the non-wetting phase fluid is identified, and the mercury injection pressure corresponding to the end of the critical stage is determined as the breakthrough pressure of the caprock; based on the breakthrough pressure, the evaluation of the sealing capacity of the coal seam CO2 geological storage caprock is realized. The method can not only maintain the high efficiency advantage of the mercury injection method, but also truly reflect the fluid breakthrough process, and realize high-precision breakthrough pressure prediction.

This invention aims to realize hexagonal boron nitride powder and other materials that achieve both excellent thermal conductivity and dielectric strength in resins. [Solution] Hexagonal boron nitride powder in which the ratio (first integrated pore volume / second integrated pore volume) of the first integrated pore volume in the range of pore diameters from 0 μm to 1.0 μm to the second integrated pore volume in the range of pore diameters from more than 1.0 μm to 5.0 μm, measured by the mercury intrusion method in accordance with JIS R 1655:2003, is 0.50 or less.

According to an embodiment, there is provided an electrode comprising an active material, the active material containing an oxide represented by the general formula Li x Ni 1‑a‑b‑ c Co a Mn b M c O2 (in the formula, x, a, b, and c are 0.9≤x≤1.25, 0.05≤a≤0.5, 0.03≤b≤0.5, 0≤c≤0.2, and M contains one or more metal elements other than Ni, Co, and Mn). The electrode satisfies the following formula (1). 0.001 In the formula (1), A is a pore volume (mL / g) of pores having a pore diameter of 0.01 μm or more and 0.3 μm or less in a pore size distribution of the electrode based on a mercury intrusion method, and B is a pore volume (mL / g) of pores having a pore diameter of more than 0.3 μm and 1 μm or less in the pore size distribution of the electrode based on the mercury intrusion method.

This invention relates to a method for quantitative characterization of the full pore size distribution and connectivity of shale. The method includes the following steps: (1) measuring the two-dimensional nuclear magnetic resonance (NMR) T1-T2 spectrum and NMR T2 spectrum of dry core samples and saturated oil core samples respectively; conducting high-pressure mercury intrusion testing on parallel core samples; completing the calibration of T2 and pore throat radius; and determining the distribution of connected pores in the core; (2) splitting the core into sheets along the foliation; measuring the two-dimensional NMR T1-T2 spectrum of sheet-like dry core samples; comparing it with the T1-T2 spectrum of dry core samples; and calculating the distribution of disconnected pores in the core; (3) grinding the core into 200-mesh particles; measuring the two-dimensional NMR T1-T2 spectrum of granular dry core samples; comparing it with the T1-T2 spectrum of sheet-like dry core samples; and calculating the distribution of disconnected pores in the core; and (4) calculating the full pore size distribution and connectivity of shale. This method achieves quantitative characterization of the full pore size distribution and connectivity of different reservoir spaces of shale by conducting NMR tests on shale in different states and morphologies.

Provided is a hexagonal boron nitride powder or the like for obtaining a resin having both excellent thermal conductivity and dielectric strength. The ratio (first cumulative pore volume / second cumulative pore volume) of a first cumulative pore volume in the range of pore diameters of 0-1.0 μm to a second cumulative pore volume in the range of pore diameters of more than 1.0 μm and 5.0 μm or less in the hexagonal boron nitride powder is 0.50 or less as measured by a mercury intrusion method in accordance with JIS R 1655:2003.

This zirconia-based porous body contains 40% by mass or more of zirconia and 5%-60% by mass of an oxide of a rare earth element, wherein (1) and (2) are both satisfied in a pore diameter distribution based on a mercury intrusion method. (1) The maximum value of a peak in a range of 10 nm or more and less than 300 nm is 1.0-4.0 ml / g. (2) The pore volume of 300-100000 nm is 0.05-1.00 ml / g.