Application of adsorption isotherm models of methane on a shale sample and their impact on reserves estimation

Cristian Alexis Murillo,
Ovidio Andrez Gomez,
Olga Patricia Ortiz Cancino,
Samuel Fernando Muñoz

Cristian Alexis Murillo
escuela de ingeniería de Petróleos, universidad industrial de santander, Bucaramanga, Colombia.

Ovidio Andrez Gomez
escuela de ingeniería de Petróleos, universidad industrial de santander, Bucaramanga, Colombia.

Olga Patricia Ortiz Cancino
escuela de ingeniería de Petróleos, universidad industrial de santander, Bucaramanga, Colombia.

Samuel Fernando Muñoz
escuela de ingeniería de Petróleos, universidad industrial de santander, Bucaramanga, Colombia.

DOI: https://doi.org/10.18273/revfue.v13n2-2015012

Published 2015-12-03

Keywords

Shale,
Gas,
Reservoir,
Isotherms,
Adsorption

How to Cite

Murillo, C. A., Gomez, O. A., Ortiz Cancino, O. P., & Muñoz, S. F. (2015). Application of adsorption isotherm models of methane on a shale sample and their impact on reserves estimation. Fuentes, El reventón energético, 13(2). https://doi.org/10.18273/revfue.v13n2-2015012

Abstract

Several adsorption isotherm models were analyzed for the purpose of fi tting the experimental data published by Gasparik et al. (2012) obtained in a methane adsorption experiment on a shale sample from the Posidonea formation in the netherlands. the following are the ten models used in this study; some of them consist of two parameters such as Langmuir, temkin and freundlich, the three parameter models: Langmuir, DubininRadushkevich, Toth and Sips, four parameters: Dubinin-Astakhov and Fritz-Schlunder and the fi ve-parameter Fritz Schlunder correlation. The results show a better fi t to the experimental data for those models with the highest number of parameters.

Subsequently, The total gas storage capacity in a hypothetical formation was calculated using some data of the Posidonea formation and the methodology proposed by Ambrose et al (2010), which was modified afterwards by substituting the term taking into account the adsorbed gas for the models mentioned earlier in this article in order to determine their influence in the free and adsorbed gas calculations. In this way, the models with the lowest Average Percentage Error (APE) generally calculated a lower volume of adsorbed and total gas compared to those models with the highest APE, which indicates the importance of a proper model selection for calculating reserves, since it implies high technical and economic impact.

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