02629nmc a2200241 4500 20260520010440.0 260224s xxu 068.82 553.28 C62 15730 Exploración y Sistemas Petroleros PATRONES DE LA ACUMULACIÓN DE HIDROCARBUROS GASEOSOS EN LA CUENCA AUSTRAL BASADOS EN LA GEOQUÍMICA ISOTÓPICA DEL GAS Y EL MODELADO DE ROCA MADRE 21/04/2023 ; 20/04/2023 18 p. ; 495-511 To better understand the distribution of gas within the Austral Basin, Compañía General de Combustibles (CGC), collected production gas samples from 26 wells, ranging from El Puma to the Northwest, Campo Indio – Ea. Agua Fresca to the East, and An Aike – Barda Las Vegas to the South, within the Springhill and Magallanes reservoirs levels. The gas samples were analyzed compositionally (% HC and non-HC) and isotopically (d13C from C1 to C5 and d2H for C1). Such analysis revealed significant variability in origin and thermal maturity. A key difference is between An Aike and Ea. Agua Fresca, where the former shows a mixed thermogenic origin (possible contribution of humic origin), while the latter is interpreted as a mixture with biogenic gas. The rest of the gases are also thermogenic with variations indicating differences in thermal maturity and subtle biogenic admixtures. The source rock appears to be a common type II kerogen with different transitions to humic origins, depending on the area. Core samples of Palermo Aike Inferior were measured for d13C in isolated kerogen and used as reference. The thermal stage for all of the samples ranges from late mature to postmature (VRE ~1.0-1.6%), where in El Puma is the most mature, while the least mature samples are found between Campo Boleadoras and Campo Indio. These groups of gases, and their resulting genetic identity, were compared to the geochemical basin model and interpreted locally as potential pods with horizontal or vertical migration processes. This work aims to provide both gassource rock correlations and their migration pattern from the kitchen to the accumulations along the Austral basin CONGTP Villalba, Damián 61104 Jait, Damián 60595 Villar, Héctor J. 4764 Cevallos, Martín 5846 Congreso de Exploración y Desarrollo de Hidrocarburos (11er : 2022 nov. 8 - 11 : Mendoza) 61064 195628 195628 https://biblioteca.iapg.org.ar/ArchivosAdjuntos/Conexplor2022/Expl-y-sist-Petroleros/explora26.pdf 0 0 0 0 263347 BVIAPG BVIAPG 068.82 553.28 C62 15730 2026-03-06 200068042 0 068.82 553.28 C62 15730 200068042 2026-03-06 00:40:41 2026-03-06 ARCHIVO