Characterizing average permeability in oil and gas formations Academic Article

abstract

• Permeability in a formation frequently follows a unimodal probability distribution. In many formations, particularly sedimentary ones, the permeability distribution is similar to the log-normal distribution. Theoretical considerations, field cases, and a reservoir simulation example show that the medium, rather than the arithmetic mean, is the appropriate measure of central tendency or average value of the permeability distribution in a formation. Use of the correct estimate of average permeability is of particular importance in the classification of tight gas formations under statutes in the 1978 Natural Gas Policy Act (NGPA).

authors

• Lee, W. John

published proceedings

• SPE Formation Evaluation

author list (cited authors)

• Rollins, J. B., Holditch, S. A., & Lee, W. J.

complete list of authors

• Rollins, JB||Holditch, SA||Lee, WJ

publication date

• March 1992

published in

• SPE Formation Evaluation  Journal

start page

• 99

end page

• 105

volume

• 7

issue

• 1