|
Match
|
Document |
Document Title |
|
|
4718270 |
Porosimeter and methods of assessing porosity
A porosimeter comprises a gas supply, a gas pressure regulator for the gas supply, a sample holder having an inlet and an outlet, said inlet being connected to the gas pressure regulator, a gas...
|
|
|
4716758 |
Method of predicting and monitoring the imperviousness of an underground cavern
The imperviousness of an underground storage cavern for hydrocarbons in a water-impregnated rock formation is predicted and monitored by progressively increasing the pressure in the cavern and...
|
|
|
4715212 |
Bulk solids property tester
Apparatus and method for testing the internal friction and yield strength properties of bulk solids, for use in the design of material handling equipment. A sample of the solids is confined under...
|
|
|
4713975 |
Dense star polymers for calibrating/characterizing sub-micron apertures
In a substance such as a membrane, a cell or virus having at least one aperture of a diameter of about 10,000 Angstroms or less, a process for measuring and characterizing the diameter of the...
|
|
|
4710948 |
Geologic core holder with composite barrel
A geologic core holder includes an elongated barrel constructed of a composite of wound and longitudinally extending nonmetallic fibers embedded in a resin matrix to provide a high strength...
|
|
|
4701861 |
Filter test device
A filter test device comprises an inlet which communicates with a gas source, an outlet which communicates with the inlet of a filter vessel, a pneumatic valve apparatus disposed between the inlet...
|
|
|
4686848 |
High temperature particulate filter media test unit
A portable test device for evaluating the effectiveness of different filtering media, preferably metallic filtering media, in removing particulates from the gas stream of an exhaust stack at...
|
|
|
4688238 |
Method for determining lithological characteristics of a porous material
A substantially cylindrical sample of a porous material is surrounded by an elastic jacket and placed in a confining pressure cell. Pressure is supplied to the cell to press the jacket into contact...
|
|
|
4686849 |
Method for determining mine roof competency
Mine roof competency is determined by injecting a pressurized gas into a borehole drilled in the roof of the mine and measuring the rate of pressure loss. A high rate of pressure loss is indicative...
|
|
|
4685326 |
Resonant determination of saturation changes in rock samples
Mass, or changes in mass, of a rock specimen are measured to determine the changes in saturation of a rock specimen. Measurements can be obtained in test environments of high temperature or high...
|
|
|
4679422 |
Method and apparatus for steady-state measurement of liquid conductivity in porous media
In the operation of the present invention, a compacted porous medium is provided with a supply of the desired liquid and is subjected to centrifugal force until the measurement of the flow rate of...
|
|
|
4679421 |
Automated gas-liquid relative permeameter
An automated system for instantaneously measuring the production rates of gas and liquid produced from a sample core for automatically determining gas-liquid relative permeability. An apparatus is...
|
|
|
4676091 |
Method and device for continuous measurement of porosity
The porosity of a strip of material is continuously computed by causing air to be drawn through the material as the strip moves across a perforated head situated atop a chamber in which the...
|
|
|
4676092 |
Filter test method and apparatus
The invention consists of a method and apparatus for very rapid, assembly-line inspection of fluid filters for manufacturing flaws; which, when the filter is in service, would pass particles...
|
|
|
4672841 |
Measuring head for measuring the porosity of a moving strip
The invention relates to a measuring head for measuring the porosity of a moving strip of porous material. The measuring chamber of the measuring head is covered by a measuring plate in which...
|
|
|
4672840 |
Method and system for determining fluid volumes of a two-phase effluent fluid flow through a porous material
A liquid hydrocarbon and an insoluble displacing fluid are passed through a core sample from a subsurface formation. The two-phase effluent flow out of the core sample is collected in a container...
|
|
|
4671100 |
Permeameter
A process and apparatus for measuring the permeability of solid samples involves applying a constant differential pressure between the end faces of a sample disposed in a measuring cell,...
|
|
|
4671102 |
Method and apparatus for determining distribution of fluids
Method and apparatus are provided to determine the distribution of fluids in a sample employing a centrifuge. The apparatus is an automated centrifuge which may employ a plurality of X-ray energies...
|
|
|
4671098 |
Delta P instrument for oxidation measurement
An apparatus for measuring ΔP in coal is described which comprises: (a) a plurality of closed metallic coal sample cups; (b) a gas manifold flow connected to each of said sample cups by way of a...
|
|
|
4669299 |
Measuring relative permeability to steam in cores of water and oil containing reservoir formations
Relative permeabilities to flowing steam water and/or oil phases within cores of earth formations are determined by flowing such fluids at reservoir conditions, sealing them within the cores, X-ray...
|
|
|
4667504 |
Flow through device for determination of the penetration rate of chemicals across biological membranes in vitro
An apparatus for determining in vitro the penetration rate of chemicals across a biological membrane. The apparatus comprises two housings, one holding a reservoir of test chemical, and the other...
|
|
|
4665689 |
Exhaust system for the combustion gases of an internal combustion engine
An exhaust system for the combustion gases of an internal combustion engine is provided comprising a pressure sensor detecting the increase of the back pressure of the gases inside an exhaust...
|
|
|
4663969 |
Measuring water vapor transmission through materials
The method and apparatus for testing the vapor transmission characteristics of a sheet material which comprises disposing said material at an interface between an aqueous solution and a plenum...
|
|
|
4662214 |
Method and apparatus for testing rod-shaped articles of the tobacco processing industry
The wrappers of filter cigarettes are tested during transport in the peripheral flutes of a drum-shaped conveyor through a testing station where at least one end of the wrapper receives air at a...
|
|
|
4660412 |
Three fluid method for non-mercury intrusion porosimetry
A three-fluid method of non-mercury liquid intrusion porosimetry. The sample to be tested and a quantity of non-wetting intrusion liquid other than mercury are introduced into a sealable,...
|
|
|
4659674 |
Quality control method for containers
A method is provided for determining the impermeability of a polymeric article to a fluid by the steps of: (a) allowing a permeant to diffuse through the polymeric article for a preselected...
|
|
|
4656865 |
System for analyzing permeation of a gas or vapor through a film or membrane
The invention is a system for measuring the permeation of a vapor or gas through a film or membrane. The device comprises a test cell which has two chambers which are separated by a membrane...
|
|
|
4651557 |
Apparatus for measuring the flow-pressure characteristics of the gas passing through a product sample having two faces
An apparatus is provided for measuring the flow-pressure characteristics of gas passing through a product sample with two faces, for example for measuring the permeability of a sample of air...
|
|
|
4649737 |
Apparatus and method for automatic testing of core samples
An apparatus for automatically determining the permeability and porosity for a plurality of core samples. The apparatus includes a carousel capable of carrying a plurality of core samples, a piston...
|
|
|
4649738 |
Fluidic permeability measurement bridge
Physical properties relating to permeability and porosity of a material in a conveying fluid medium are determined in a device designed to measure the pressure differential between a first stream...
|
|
|
4648261 |
Method for determining physical properties of a porous sample using capillary pressure measurement
A method for determining pore-dependent properties, such as electrical conductivity and absolute permeability, of a porous sample by use of capillary pressure measurements. Capillary pressure data...
|
|
|
4644779 |
Method and equipment to perform porosimetric analyses
A method for performing porosimetric analyses and apparatus therefor are disclosed. In particular, a method for performing porosimetric anaylses by the so-called mercury method is disclosed,...
|
|
|
4643019 |
Porous end plug disk for testing core samples
Improved end plugs for abutting core samples during porosity and permeability testing. The end plug has a face having at least one circular channel and a plurality of radial channels formed on its...
|
|
|
4638447 |
Method for determining consistent oil relative permeability values from dynamic displacement data
Corrected oil relative permeability values for a core sample are determined from dynamic displacement measurements by the steps of plotting a ratio of oil rate output (q o ) to calculated oil...
|
|
|
4635470 |
Apparatus and method for permeability measurement
The invention relates to an apparatus and a method for determining the drainability by permeability measurements. The apparatus is provided for taking a sample of a suspension, particularly a fibre...
|
|
|
4630466 |
Apparatus for testing rod-shaped articles of the tobacco processing industry
A cigarette testing apparatus wherein the cigarettes are transported in axially parallel peripheral flutes of a testing drum toward, past and beyond a testing station. A wobble plate is adjacent to...
|
|
|
4631677 |
Method for determining the placement of perforations in a well casing
A method for determining the productivity of a well site includes extracting a core with sponge coring techniques and measuring the parameters of the core. The parameters measured are porosity,...
|
|
|
4627448 |
Tobacco smoke article holder and method therefor
A tobacco smoke article holder for a testing machine and a method of mounting a tobacco smoke article in the holder to simulate the human smoking process including an inflatably lined flow-through...
|
|
|
4625544 |
Determining saturation and permeability using mercury capillary pressure curves
A method using mercury capillary pressure curves for determining various characteristics of formations. The mercury capillary pressure curve is amplified and small changes are used to compute...
|
|
|
4623263 |
Apparatus for the thermal measurement of the texture of a porous body
An apparatus for the thermal measurement of the texture of a porous body, including a measuring head, a measuring assembly and a processing and control circuit. The measuring head is provided with...
|
|
|
4622643 |
Method for determining consistent water relative permeability values from dynamic displacement data
Corrected water relative permeability values for a core sample are determined from dynamic displacement measurements by the steps of plotting a ratio of water rate output (q w ) to calculated water...
|
|
|
4619136 |
Apparatus for measuring the decontamination factor of a multiple filter air-cleaning system
An apparatus for measuring the overall decontamination factor of first and second filters located in a plenum. The first filter separates the plenum's upstream and intermediate chambers. The second...
|
|
|
4614109 |
Method and device for testing the permeability of membrane filters
The invention pertains to a method and device for testing the permeability of membrane filters by submitting a wetted membrane filter on its inlet side to a predetermined testing gas pressure...
|
|
|
4601336 |
Process for selecting a steam foam forming surfactant
A steam-foam-forming surfactant effective for displacing the oil in a particular reservoir is selected by comparing the capabilities of foams formed by different surfactants for both flowing...
|
|
|
4599891 |
TCH--tri-axial core holder
A core holder is described which shows a rock core in a resilient sleeve within a hollow housing. A longitudinal axial force is applied on the core independently of pressure applied radially on the...
|
|
|
4596134 |
Method and apparatus for simulating smoking through cigarette filter tips to determine percentage of collapse
Method and apparatus for simulating smoking through a cigarette filter tip by metering a controlled amount of heated water vapor for a controlled period of time through a cigarette filter tip and...
|
|
|
4587857 |
Method for mounting poorly consolidated core samples
A method of mounting and confining poorly and/or unconsolidated core samples for subsequent handling and testing is disclosed. The preferred method comprises the steps of inserting a poorly...
|
|
|
4586376 |
Determining the effect of fluid flow through permeable media
A method and apparatus for determining the effect of the flow of a fluid through a permeable particulate medium wherein a sample of the fluid is maintained as nearly as possible in the same...
|
|
|
4584870 |
Manufacture of cigarettes
Apparatus for testing the wrappers of cigarettes for leaks includes means for producing a series of first electrical signals indicative of the leakage flow through the wrappers of successive...
|
|
|
4573342 |
Apparatus and method for the automatic porosity and permeability testing of multiple core samples
An apparatus automatically determining the permeability and porosity for a plurality of core samples. The apparatus includes a carousel capable of carrying a plurality of core samples, a piston...
|