01562nab a2200205 4500 20260520001755.0 260224s2009 xxu Pazos, Fernando A. 42568 Bhaya, Amit 42569 Martins Compan, André Luiz 42570 Calculation of Klinkenberg permeability, slip factor and turbulence factor of core plugs via nonlinear regression agos. 2009 14/06/2010 ; 11/06/2010 9 p. ; 159-167 Transcripción del resumen del autor. Published methods to determine the Klinkenberg permeability, Klinkenberg slip factor and Forchheimer turbulence factor of core plugs can exhibit considerable error. Jones presented a technique based on gas pressure decay measurements during the transient state, where, with a single run, an algorithm can calculate the parameters with precision. However, this paper shows that Jones' method is based on a linear regression to find a fixed point of a nonlinear error function, and is presented without theoretical justification or convergence conditions. This paper proposes a simple algorithm, based on nonlinear regression, to calculate the unknown parameters, and has the advantage of theoretical justification as well as weaker requirements for convergence. In addition, a strategy to calculate the unknown physical parameters when the measurements are noisy is presented. 3-4 Journal of Petroleum Science & Engineering 67 ARTICULO 170939 170939 0 0 0 0 238758 BAAB BAAB 2026-03-05 200045796 0 200045796 2026-03-05 15:13:19 2026-03-05 ARTICULO