Geology and fractures in the San Pedro Structure, Sierra Alto del Rio Seco, Sierras Subandinas, Province of Salta

The San Pedro structure is located at the north-central section of the Subandean Ranges morphostructural unit. Its stratigraphic column is characterized by a complex geologic history and a over position of a different origins sedimentary basins, with a total backfill of more than 10,000 m developed...

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Publicado:	2005
Materias:	Naturally fractured reservoir Subandean ranges Tarija basin anticline Carboniferous faulting fracture fracture geometry geological record morphostructure outcrop reservoir rock sedimentary basin Argentina Bolivia Paraguay Salta [Argentina] San Pedro [Paraguay] South America Tarija [Bolivia]
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v60_n4_p696_DiMarco http://hdl.handle.net/20.500.12110/paper_00044822_v60_n4_p696_DiMarco
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00044822_v60_n4_p696_DiMarco
record_format	dspace
spelling	paper:paper_00044822_v60_n4_p696_DiMarco2023-06-08T14:25:56Z Geology and fractures in the San Pedro Structure, Sierra Alto del Rio Seco, Sierras Subandinas, Province of Salta Naturally fractured reservoir Subandean ranges Tarija basin anticline Carboniferous faulting fracture fracture geometry geological record morphostructure outcrop reservoir rock sedimentary basin Argentina Bolivia Paraguay Salta [Argentina] San Pedro [Paraguay] South America Tarija [Bolivia] The San Pedro structure is located at the north-central section of the Subandean Ranges morphostructural unit. Its stratigraphic column is characterized by a complex geologic history and a over position of a different origins sedimentary basins, with a total backfill of more than 10,000 m developed at different geological ages and under different environments. The San Pedrito reservoir (Devonian levels) located at the Acambuco Block of the Tarija Basin can be studied like a naturally fractured reservoir due to the fracturing and faulting features present in the the anticline core. A fracture study has been done, focused on Las Peñas and San Telmo Formations outcrops to analyze the links with subsurface units (Carboniferous basal levels) which compose the reservoir rocks of the San Pedro field. The overlap of major zones of intense fractures on surface with high accumulated production values permit to postulate that the deformation affected all Carboniferous deposits like a single package developed in a consistent way. The Carboniferous deposits may show minor discontinuities but the tectonic stress does not decouple the upper and lower Carboniferous deposits. The orthogonal fractures (type I) have their major intensity values at the ridge sections and the parallel fractures (type II) have their mayor intensity values at the forelimb sections. This last set keeps a close relationship with the bend fold model and to the accumulated production of the San Pedro Oil field. © 2005 Asociación Geológica Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v60_n4_p696_DiMarco http://hdl.handle.net/20.500.12110/paper_00044822_v60_n4_p696_DiMarco
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Naturally fractured reservoir Subandean ranges Tarija basin anticline Carboniferous faulting fracture fracture geometry geological record morphostructure outcrop reservoir rock sedimentary basin Argentina Bolivia Paraguay Salta [Argentina] San Pedro [Paraguay] South America Tarija [Bolivia]
spellingShingle	Naturally fractured reservoir Subandean ranges Tarija basin anticline Carboniferous faulting fracture fracture geometry geological record morphostructure outcrop reservoir rock sedimentary basin Argentina Bolivia Paraguay Salta [Argentina] San Pedro [Paraguay] South America Tarija [Bolivia] Geology and fractures in the San Pedro Structure, Sierra Alto del Rio Seco, Sierras Subandinas, Province of Salta
topic_facet	Naturally fractured reservoir Subandean ranges Tarija basin anticline Carboniferous faulting fracture fracture geometry geological record morphostructure outcrop reservoir rock sedimentary basin Argentina Bolivia Paraguay Salta [Argentina] San Pedro [Paraguay] South America Tarija [Bolivia]
description	The San Pedro structure is located at the north-central section of the Subandean Ranges morphostructural unit. Its stratigraphic column is characterized by a complex geologic history and a over position of a different origins sedimentary basins, with a total backfill of more than 10,000 m developed at different geological ages and under different environments. The San Pedrito reservoir (Devonian levels) located at the Acambuco Block of the Tarija Basin can be studied like a naturally fractured reservoir due to the fracturing and faulting features present in the the anticline core. A fracture study has been done, focused on Las Peñas and San Telmo Formations outcrops to analyze the links with subsurface units (Carboniferous basal levels) which compose the reservoir rocks of the San Pedro field. The overlap of major zones of intense fractures on surface with high accumulated production values permit to postulate that the deformation affected all Carboniferous deposits like a single package developed in a consistent way. The Carboniferous deposits may show minor discontinuities but the tectonic stress does not decouple the upper and lower Carboniferous deposits. The orthogonal fractures (type I) have their major intensity values at the ridge sections and the parallel fractures (type II) have their mayor intensity values at the forelimb sections. This last set keeps a close relationship with the bend fold model and to the accumulated production of the San Pedro Oil field. © 2005 Asociación Geológica Argentina.
title	Geology and fractures in the San Pedro Structure, Sierra Alto del Rio Seco, Sierras Subandinas, Province of Salta
title_short	Geology and fractures in the San Pedro Structure, Sierra Alto del Rio Seco, Sierras Subandinas, Province of Salta
title_full	Geology and fractures in the San Pedro Structure, Sierra Alto del Rio Seco, Sierras Subandinas, Province of Salta
title_fullStr	Geology and fractures in the San Pedro Structure, Sierra Alto del Rio Seco, Sierras Subandinas, Province of Salta
title_full_unstemmed	Geology and fractures in the San Pedro Structure, Sierra Alto del Rio Seco, Sierras Subandinas, Province of Salta
title_sort	geology and fractures in the san pedro structure, sierra alto del rio seco, sierras subandinas, province of salta
publishDate	2005
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v60_n4_p696_DiMarco http://hdl.handle.net/20.500.12110/paper_00044822_v60_n4_p696_DiMarco
_version_	1768543111714177024

Geology and fractures in the San Pedro Structure, Sierra Alto del Rio Seco, Sierras Subandinas, Province of Salta

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