Automated gas permeameter

Details Automated gas permeameter Automated gas permeameter

1997-04-25

1998-11-03

Voeltz, Emanuel Todd

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

702 50, 702 47, 702 45, 73 38, 7315205, 7386301, 73861, 16625002, 1662525, 324376, G01N 1508, G01N 3500, G06F 1900

Patent

active

058324097

ABSTRACT:
An automated gas permeameter measures permeabilities of porous samples, such as rocks, ranging from 0.1 milliDarcys to 10 Darcys within 0.5% under dry and humid conditions. The automated gas permeameter includes a program for estimating a coarse permeablity value. The program uses the coarse value to determine settling time for pressure to reach steady state within 0.1% and optimal operating conditions, such as the setting of mass flow rates imposed on the sample. Operating conditions of the permeameter are set by the program according to the resolution and range of flow controllers, accuracy of a pressure transducer, and the limit of applicability of Darcy's law for a sample.

REFERENCES:
patent: 4191046 (1980-03-01), Baker et al.
patent: 4198854 (1980-04-01), Washington et al.
patent: 4679421 (1987-07-01), Barree
patent: 4864845 (1989-09-01), Chandler et al.
Gas Permeameter Manual of Porous Materials, Inc. (1992) describing the principles of operation, features and applications of the Gas Permeameter.

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