Distribution and origin of organic compounds in the condensates from a Mexican high-temperature geothermal field

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Authors	SANCHEZ AVILA Juan Ignacio ESTELA GARCIA-SANCEHZ Brenda MICHEL VARA-CASTRO Gabriela KRETZSCHMAR Thomas
Year of publication	2021
Type	Article in Periodical
Magazine / Source	Geothermics
MU Faculty or unit	Faculty of Science
Citation
Web	https://doi.org/10.1016/j.geothermics.2020.101980
Doi	http://dx.doi.org/10.1016/j.geothermics.2020.101980
Keywords	Organic dissolved fraction; SPE-GC-MS analysis; Biogenic and abiogenic origin; Super-hot geothermal system; Los humeros geothermal field
Description	We report herein for the first time, the presence and relative composition of medium volatility organic compounds in samples from a super-hot geothermal field in Mexico. We sampled ten water/vapor condensates from active exploitation wells from Los Humeros Geothermal field. We identified 48 compounds, being alkanes, aromatics and S-bearing the predominant homologues, followed by O-bearing. Evidence suggests that the origin of the hydrocarbons is mainly thermogenic derived from hydrothermal alteration of buried organic matter, supported by the presence of aromatics, S-bearing and an alkane CPI below 1. The results of this study increase the scarce knowledge of dissolved organic fraction in hydrothermal systems.
Related projects:	Postdoc@MUNI