CMS™-300 Core Measurement System, Model 300 Stage4.00, integrated, automated
computer-directed, unsteady state pressure decay Permeameter and Porosimeter. Determines
Sample Length, Sample Diameter, Porosity (0.01 to 40 percent), Pore Volume, equivalent
air permeability at a specified mean pressure, Klinkenberg Permeability (equivalent
liquid permeability) Forchheimer Inertial Factor (Beta & Alpha), and Klinkenberg
measured slippage correction factor at programmable, net sequential overburden pressures
from 250 to 9,800 psig on 1" and ½" diameter cylindrical plugs ¾" to
31/8" in length. (Custom Sizes including 30mm sample diameter).
Version 4.50 is available as an upgrade to existing systems and provides the following
improvements in performance:
The instrument uses an integrated form of the combined Darcy, Klinkenberg and Forchheimer
equations to accurately determine permeability from >15 Darcies to <0.05 microdarcies
(0.00005mD). Data collected during this measurement is used to determine non-reactive
liquid permeability (Klinkenberg), calculate an equivalent air permeability at a
specified mean pressure, Klinkenberg slip factor, Forchheimer inertial (formally
turbulence) factor (Beta) and Jones pore system Reynold’s number (alpha).
Pore Volume measurements are made using an advanced Boyle’s Law method combined
with advanced calibration technique for improved accuracy.
An advanced algorithm allows actual confining pressure to be matched with requested
confining pressure resulting in improved accuracy of measurements. An integrated
digital caliper workstation allows for the automatic input of sample dimensions
and allows the operator to automatically make corrections for irregular shaped samples.
The patented loading system allows unattended operation, the operator not being required
to remove analyzed samples from the system.
The CMS™-300 uses helium as its measurement
fluid under normal operating conditions with automatic switching to nitrogen for
low permeability determinations. The permeability only options allow for the rapid
screening of samples for permeability and Forchheimer factor without requirement
to perform lengthy pore volume determinations. Data is both printed and stored on
hard disk along with Quality Control data allowing improved evaluation of data.