02525nmc a2200253 4500 20260520010439.0 260224s xxu 068.82 553.28 C62 15730 Exploración y Sistemas Petroleros REVISIÓN DE LA ESTRATIGRAFÍA Y POTENCIAL PETROLÍFERO DE LA ANTEFOSA PALEÓGENA DE LA CUENCA DE ANTEPAÍS MAGALLANES, CHILE 21/04/2023 ; 18/04/2023 30 p. ; 281-309 During the last few years, interest for oil and gas exploration in the Magallanes Foreland Basin of southern Chile has shifted to Paleogene siliciclastic deposits strata of the foredeep realm. However, the task is made difficult by a remarkable tectono-sedimentary complexity. Based on previous work, seismic and well data, and recent biostratigraphic and detrital-zircon U-Pb dating, the purpose of the present work is to revise the stratigraphic framework and petroleum potential of the foredeep succession. This succession is exposed along the Andes Cordillera and at the subsurface lies at a depth of ~2300-6000 m. In the study area, potential tight-gas reservoirs vary from ~30-100 m in thickness and comprises sandstones and minor conglomerates associated with with gravity-flows. Locally, some overpressured reservoirs has produced gas and condensate from a depth of 2500 m farther east. Interbedded mudrocks may act as effective barriers to fluid flows in structurally simple areas. Thermal maturity of potential source rocks below ~2500 m depth is 0.6 %Ro or higher. Total organic carbon is commonly low (<0.8 wt. %), but range between 0.2-1.8 wt. %, and is mainly associated with gas-prone Type-III kerogens. Traps are said to be structural, stratigraphic, or combined and the quality of the reservoirs is generally poor because moderate to intense diagenetic processes. Nevertheless, tight intervals located in the platform areas of the basin are just recently attracting attention for development with multi-well pad and hydraulic fracturing techniques. CONGTP Pinto, Jesús 61086 González, Danilo 61087 Agurto, Cristóbal 61088 Pérez, Álvaro 61089 Ojeda, Romina 61090 Congreso de Exploración y Desarrollo de Hidrocarburos (11er : 2022 nov. 8 - 11 : Mendoza) 61064 195618 195618 https://biblioteca.iapg.org.ar/ArchivosAdjuntos/Conexplor2022/Expl-y-sist-Petroleros/explora16.pdf 0 0 0 0 263337 BVIAPG BVIAPG 068.82 553.28 C62 15730 2026-03-06 200068032 0 068.82 553.28 C62 15730 200068032 2026-03-06 00:40:41 2026-03-06 ARCHIVO