Estimating the mean permeability: how many measurements do you need?

P. Corbett, J. L. Jensen

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)


The question of the number of permeability measurements that are required to estimate the mean permeability of a reservoir interval is not generally considered during reservoir evaluation. Permeability sampling is traditionally carried out with core plugs (1.0-1.5 inch or 2.5-3.8 cm cylindrical samples) at a spacing of about 1 foot or 0.3 m. This spacing has evolved from considerations of practicality, cost and the need for core conservation, and takes little account of the underlying rock variability.
Original languageEnglish
Pages (from-to)89-94
Number of pages6
JournalFirst Break
Issue number3
Publication statusPublished - Mar 1992

ASJC Scopus subject areas

  • Geophysics


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