US 2013/0152671 A1 · Capillary-Based Calibration Standards For Measurement of Permeability

Abstract

A calibration standard or check plug provides calibration standards in the permeability range of 10-10,000 nanoDarcy. The check plug is of similar exterior dimensions to a core sample that would be used with existing permeameters. The check plug is constructed from an impermeable material that is insensitive to moisture. The check plug has one or more channels of known diameter from which the permeability may be calculated. Methods for use thereof and methods of manufacture thereof are also disclosed.

Claims25

Dependent claims

A method of creating a check plug of known permeability comprising:

creating a cylinder with a diameter D with an impermeable matrix;
creating one or more channels in the cylinder,
wherein the channel has a known diameter d;
and
calculating the permeability through the check plug by the equation
k
effective
=
nd
4
32

D
2
,
wherein n is the number of channels.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/660,922Filed 25 Oct 2012

Priority

20 Dec 2011

Published

20 Jun 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification3 codes

G01N 15/0826
Investigating permeability by forcing a fluid through a sample: and measuring fluid flow rate, i.e. permeation rate or pressure change
G01N 2001/2893
Preparing specimens for investigation including physical details of chemical methods covered elsewhere, e.g. G01N33/50, C12Q: preparing…
G01N
Investigating or analysing materials by determining their chemical or physical properties

Capillary-Based Calibration Standards For Measurement of Permeability

Life of this patent

Capillary-Based Calibration Standards For Measurement of Permeability

Life of this patent

Abstract

Claims25