000			02947nmc a2200253 4500
005			20260520010440.0
008			260224s xxu
082			_a068.82 553.28 C62 15730
210			_aExploración y Sistemas Petroleros
245	0	0	_aRESERVORIOS CLÁSTICOS NO COMPACTOS EN EL PLAY DE GAS DE CENTRO DE CUENCA DEL GOLFO SAN JORGE, FORMACIÓN MINA DEL CARMEN
270			_a21/04/2023 ; 20/04/2023
300			_a22 p. ; 527-547
520			_aThe Golfo San Jorge gas play located at the center basin constitutes a frontier area for exploration and development, compared with its flanks, where the hydrocarbon production is concentrated. Ninety percent of this play is situated at the Gran Bajo Oriental block (2650 km2) operated by Tecpetrol since 2018, and includes Estancia La Mariposa (ELMA) and Lomita de la Costa-Cerro Mangrullo (LDLCCEMA) oil fields. Studies done in cores and cuttings on exploratory wells in GBO, together with the integration of oilfield data from the ELMA and LDLC wells, allowed identifying and characterizing uncompacted reservoirs in the Mina del Carmen Formation (MEC) at critical range depths of 3.500 mbbp. These reservoirs are clastic, mainly composed of friable conglomerates to medium-grained sandstones deposits, associated to sandy-gravelly channel facies, reaching 10-12 m layer thickness, and with porosities of 15% and permeabilities close to 3 mD in reservoir conditions. The porosity is intergranular and intra-cement, with a diagenetically early phase characterized by chlorite rims, which prevents siliceous cement formation. These reservoirs have presented in productive wells important shows while drilling, mud density decrease up to 100 gr/l, and andoccasionally field gas burning. Initial flow, ranges from 80.000 m3/d pre-frac up to 130.000 m3/d post-frac. Additionally, reservoir facies with worse petrophysics conditions were also identified; these are related to very fine sandstones associated to shallow channels and unconfined flows deposits. They reach up to 5-7 m layer thickness, and present porosities of 5% and permeabilities of 0.03 mD in reservoir conditions. These reservoirs present proved development ing in the uppermost 800 m of Mina del Carmen Formation (reaching up to 80 m of total thickness). At deeper intervals CO2 presence and the proportional increment of layers with poorer reservoirs conditions constitute an economic limit for this play.
773			_g
942			_cCONGTP
100	1		_aMariñelarena, Rodrigo _961106
100	1		_aMosquera, Alfonso _92082
100	1		_aAlonso-Muruaga, Pablo Joaquín _961107
100	1		_aGalán, Alejandra _9677
100	1		_aPeano, Javier _9673
111	2		_aCongreso de Exploración y Desarrollo de Hidrocarburos (11er : 2022 nov. 8 - 11 : Mendoza) _961064
999			_c195630 _d195630
856			_uhttps://biblioteca.iapg.org.ar/ArchivosAdjuntos/Conexplor2022/Expl-y-sist-Petroleros/explora28.pdf