Summary The theory, design, and operation of a new probe permeameter based on a pressure-decay technique are discussed. Its useful range is from 0.001 to 30,000 md. Measurement time varies from ≈2 to 35 seconds. Slip-corrected (Klinkenberg) and conventional gas permeabilities, both of which are free from inertial flow-resistance effects, and measurement-position coordinates are obtained automatically. Computer-stored data facilitate generation of permeability "profiles" (permeability/depth logs), permeability contour plots, or "calibration" of wireline logs that imply permeability.
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Stanley Jones (1994) studied this question.
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