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082 _aCD I116 64 0015469
245 0 0 _aAvances en el conocimiento sobre la capacidad generadora de la FM Pozo D-129: aspectos litológicos y geoquímicos. Cuenca del Golfo San Jorge, Argentina
270 _a20/10/2016 ; 20/10/2016
300 _a21 p.
520 _aAdvances in the understanding of the generating capacity of the Fm Pozo D-129: lithological and geochemical aspects. Golfo San Jorge Basin, Argentina The Pozo D-129 Formation is a lower Cretaceous lacustrine unit which is the main source rock in the Golfo San Jorge Basin. The unit thickness varies from a few hundreds of meters to more than 1500 meters in the basin center. Up to now Pozo D-129 Formation has been considered having an homogeneous generation capacity throughout the whole section in basin modeling and volumetric estimations. Exhaustive analyses of recently acquired and revisited geochemical and lithological data from 335 wells unravel a more complex scenario. In the San Bernardo fold belt area three main sections were recognized: Lower, Middle and Upper. The Upper Section is composed by organic matter rich black shales with measured TOC up to 5.5% and HI values typical of type I to I/II kerogens, which we interpret to have sourced most of the hydrocarbons produced in the basin. Secondarily, only thin and isolated black shale layers were identified in the Lower Section with poorer quality organic matter and modest hydrocarbon generation potential. Finally, the Middle Section, despite of being the thickest, shows null potential for hydrocarbon generation. The Upper Section was also recognized in northern and southern flanks of the basin with some slightly different hydrocarbon generation potential related to variations in the organic composition we summarize in this article.
773 _g
942 _cCONGTP
100 1 _aBasile, Yanina A.
_955689
100 1 _aUtgé, Silvana M.
_955690
100 1 _aMartínez Cal, Virginia
_91001
100 1 _aPonce, Cintia
_955691
111 2 _aCongreso de Exploración y Desarrollo de Hidrocarburos (9no. : 2014 nov. 3-7 : Mendoza)
_954287
999 _c189771
_d189771
856 _uhttps://biblioteca.iapg.org.ar/ArchivosAdjuntos/CONEXPLOR2014/265-Avancesenelconocimiento.pdf