Determination of kerogen activation energy distribution

Modeling of gas generation from the Cameo coal zone in the Piceance Basin, Colorado

“…The kinetic model commonly used for coal thermal decomposition is based on several parallel first-order reactions, with a distribution of activation energies, all occurring simultaneously but independently of each other (Tissot and Welte, 1984;Burnham et al, , 1988Quigely et al, 1987;Tissot et al, 1987;Espitalie et al, 1988;Burnham and Sweeney, 1989;Ungerer, 1990;Sundararaman et al, 1992;Tang et al, 1996). In this study, the pre-exponential factor and activation energies were derived from the above standard kinetics analysis procedures by fitting the calculated values to values from the pyrolysis data.…”

A kinetic model for thermally induced hydrogen and carbon isotope fractionation of individual n-alkanes in crude oil

“…Kinetic parameters (activation energy distribution and frequency factor) were fitted to our experimental data for oil to gas conversion using a deconvolution procedure described by Sundararaman et al (1992). This mathematical treatment is especially suited to working with complex reaction systems and yields a smooth conversion (fraction reacted) vs. temperature profile when extrapolating to typical geological heating regimes.…”

Prediction of petroleum formation: the influence of laboratory heating rates on kinetic parameters and geological extrapolations

“…For all three configurations the range of heating rates appeared to be sufficiently different for deriving a reasonable starting value of the frequency factor from the shift of the peak generation temperatures T max (van Heek & Jüntgen, 1968;Sundararaman, Merz, & Mann, 1992).…”