English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Historically, volcanic basins have been avoided by oil and gas companies for hydrocarbon exploration, due to high rates of unsuccessful cases, mainly when magmatic suites were unexpected. Furthermore, igneous rocks have always been considered harmful to petroleum systems. However, in the past two decades, researches regarding these systems in volcanic basins have shown a number of positive effects, as increasing permeability of tight rocks, and generation of traps. This work aims to investigate the occurrence and impacts of igneous intrusions on sedimentary basins regarding the reservoir and trap elements. For that, we use eight 2D seismic lines and five wells within the Papa-Terra field, southern Campos Basin, Brazil. Applying seismic stratigraphy, nineteen sills were identified, most of them have saucer-shaped geometries, but they are also planar. We have identified some possible joint connections in the NW sill complex, as well as a possible feeder dyke. Five sills are located right below two domal structures in the overburden, which were interpreted as forced-folds. There are fractures interpreted in the sills’ boundaries and in folded sediments. Some of the fractures in the sills boundaries were interpreted as hydrothermal vents that were active until Upper Cretaceous. The contribution of this study is a documentation of an offshore volcanic basin related to a proven petroleum system in the south Atlantic, which has been neglected by Brazilian researchers over the years. ATIVIDADE MAGMATICA EM BACIAS SEDIMENTARES: SOLEIRAS E FALHAS ASSOCIADAS QUE AFETAM O SISTEMA PETROLIFERO DA BACIA DE CAMPOS (SE BRASIL) Resumo Historicamente, as empresas de petroleo e gas evitam efectuar propeccao de hidrocarbonetos em bacias afetadas por vulcanismo, devido a elevadas taxas de insucesso, principalmente quando os pacotes magmaticos sao inesperados. Alem disso, as intrusoes de rochas igneas sempre foram consideradas prejudiciais aos sistemas petroliferos. No entanto, nas ultimas duas decadas, pesquisas relacionadas a esses sistemas em bacias vulcânicas mostraram varios efeitos positivos, pois podem contribuir para o aumento da permeabilidade de rochas compactas e geracao de armadilhas. Este trabalho tem como objetivo investigar a ocorrencia e os impactos de intrusoes igneas numa bacia sedimentar. Para isso, foram analisadas oito linhas sismicas 2D e cinco pocos no campo Papa-Terra, no sul da Bacia de Campos, Brasil. Aplicando a estratigrafia sismica, foram identificadas dezanove soleiras, a maioria delas com geometrias em forma de pires, mas tambem planas. Foram identificadas algumas possiveis conexoes no complexo da soleira NW, bem como um possivel dique de alimentacao. Cinco soleiras localizadas logo abaixo de duas estruturas em forma de doma correspondem possivelmente a dobras forcadas. Existem fraturas nos limites das soleiras e em sedimentos dobrados. Algumas das fraturas nos limites das soleiras poderao ter funcionado como ductos circulacao hidrotermal que terao estado ativos ate o Cretaceo Superior. Este estudo contribuiu para um melhor conhecimento de uma bacia vulcânica offshore relacionada a um sistema petrolifero comprovado no Atlântico Sul, a qual tem sido negligenciada por pesquisadores brasileiros ao longo dos anos. Palavras-chave: Vulcânica. Bacia Sedimentar. Soleira em forma de pires. Estratigrafia sismica. Bacia Offshore. Margem Continental. Cretaceo Superior.

UNRAVELING MAGMATIC ACTIVITY IN SEDIMENTARY BASINS: SILLS AND RELATED BRITTLE STRUCTURES AFFECTING CAMPOS BASIN PETROLEUM SYSTEM (SE BRAZIL)