Abstract
Previous organic geochemical studies of crude oils and possible source sediments from the Neuquen Basin, Argentina (e.g., Leenheer, 1982, 1984) have shown that crude oils produced in this basin were generated from source rocks deposited in a characteristically marine depositional environment with one exception, the Puesto Flores Oeste (PFO) X-1 oil. Furthermore, the Upper Jurassic/Lower Cretaceous Vaca Muerta Formation was determined to be the source of these marine oils. However, certain facies of the Lower Jurassic Los Molles Formation were rated as good to excellent possible source rocks (generally below 2500 m in the PFO X-1 well). In fact, oil recovered from PFO X-1 appeared to have been generated from the Los Molles Formation, which exhibited a relatively large lateral variability in organofacies. Also, the Los Molles Formation contains abundant organic matter of terrigenous origin, allowing for a relatively straightforward differentiation between oils generated from these disparate source rocks.
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References
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© 1993 Springer Science+Business Media New York
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Zumberge, J.E. (1993). Organic Geochemistry of Estancia Vieja Oils, Rio Negro Norte Block. In: Engel, M.H., Macko, S.A. (eds) Organic Geochemistry. Topics in Geobiology, vol 11. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-2890-6_20
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DOI: https://doi.org/10.1007/978-1-4615-2890-6_20
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