Validating Compositional Chemical Kinetics for Basin Modeling of the Vaca Muerta Formation in the Neuquen Basin
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Laboratory-derived chemical kinetic models have been challenged to match the compositions of oil and gas accumulations in the subsurface for a variety of reasons, including fractionation during expulsion. Measured oil and gas compositions in the subsurface of the Neuquen Basin were used to refine a laboratory-based chemical reaction network coupled to a sorption-based expulsion model. Model calculations included a reconstructed burial history model for the Vaca Muerta formation. Besides source-rock Rock-Eval parameters, agreement was obtained for polar content, saturates to aromatics ratio, gas to oil ratio, and gas wetness.
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Mei Mei (Alumni)