Roberto Davila

Petróleo Brasileiro S.A. | PETROBRAS · Exploration and Production - E&P

Campos Basin Turbidites (Oligocene-Miocene) and it´s main facies associations, architectural elements, sequence stratigraphy and evolutive depositional models.

A recurring challenge in geological modeling is bridging the gap between different scales. For example, difficulties arise when connecting outcrop data through production to exploration scale models. An object-based stochastic simulation was performed using outcrop data from the Arroyo La Jardinera area in the southern region of the Neuqu´en Basin,...

Pressure gradients are widely used in the petroleum industry to measure the internal pore pressure regime of rocks, as well as to make inferences about the reservoir fluids. The pressure regime of an area is a very sensible and strategic information, since it is fundamental in all phases of a well, from planning to drilling, as well as for the form...

The use of spectral gamma-ray (SGR) logs helps in the interpretation of depositional environments and in paleoenvironmental reconstitution. To obtain SGR data in wells where they were not originally acquired, a low-cost methodology for acquiring them using cuttings was developed. For this study, we used a portable gamma spectrometer, cuttings of 5...

Roberto d´Avila´s List Of publications

The use of spectral gamma ray logs helps in the interpretation of depositional environments and paleoenvironmental reconstitution. In order to obtain the spectrometry range in wells where these U, Th and K curves were not originally acquired, an inexpensive methodology for acquiring spectral gamma ray (SGR) data was developed using cutting samples,...

The Devonian Period is characterized by an overall mean sea-level higher than is observed today. This pattern is recognized in several basins worldwide and permitted, for example, the flooding of the Rheic ocean through SW Gondwana's cratonic domain. Nonetheless, this flooding was not purely eustatic. The Ordovician-Devonian geodynamic Famatinian e...

The Devonian Period is characterized by an overall mean sea-level higher than is observed today. This pattern is recognized in several basins worldwide and permitted, for example, the flooding of the Rheic ocean through SW Gondwana’s cratonic domain. Nonetheless, this flooding was not purely eustatic. The Ordovician-Devonian geodynamic Famatinian e...

List of my Publications (books, chapters of books, papers, conference papers, Petrobras Internal Reports titles) - 91 titles

The integration of rock and well logs data is fundamental for the interpretation of depositional systems and sequences, a fundamental support for E&P activities. This approach was applied on the low permeability turbidite sandstones and slurries of the Maracangalha Formation, in the Massapê Oil/Gas Field, Recôncavo Basin. Well-log interpretation al...

RESUMO: Os reservatórios turbidíticos do cretáceo superior, presentes no campo de Marimbá, Bacia de Campos, são constituídos por sistemas areno-conglomeráticos canalizados dominantemente amalgamados. Estes depósitos preenchem mini bacias desenvolvidas pela tectônica halocinética, que condicionou depressões deposicionais a partir do final do Albiano...

Macro and micro characterization of fractured dolomitized debri flows and shales resevoirs that are oil producers in the cretaceous rifte Recôncavo Basin in Northeast Brazil

Empty elliptical vesicles are observed in outcrops of Barremian very fine clayey sandstone to siltstone lacustrine slurry deposits of the Pitanga Member (Maracangalha Formation), exposed in the Maré Island, Southern Recôncavo Basin, Brazil. These sedimentary features have been traditionally interpreted as water escape structures triggered by the di...

Empty elliptical vesicles are observed in outcrops of Barremian very fine clayey sandstone to siltstone lacustrine slurry deposits of the Pitanga Member (Maracangalha Forma‑ tion), exposed in the Maré Island, Southern Recôncavo Basin, Brazil. These sedimentary features have been traditionally in‑ terpreted as water escape structures triggered by th...

The integration of regional 3D seismic, well logs, cores, and biostratigraphic data gathered in a sequence stratigraphic approach provide a basis for interpreting the Oligo-Miocene and Miocene system as a whole. This stratigraphic interval, which contains the most of oil reserves in Campos basin turbidites, was divided into third and fourth order s...

Turbidite Systems in the Campos Basin Oligo-Miocene and Miocene, Brazil Arienti, Luci M. e-mail: arienti@petrobras.com.br Santos, Viviane S. S. dos Voelcker, Helga E. Petrobras Research Center Cenpes, Horácio de Macedo Street, 95 Cidade Universitária, Ilha do Fundão Rio de Janeiro, Brazil 21941-915 Mucelini, Hilario Gontijo, Rogério C. d’Avila, Rob...

ABSTRACT This paper is about an almost uninterrupted exposure of the Jurassic Los Molles Formation in the Arroyo La Jardinera region in the southern Neuquén Basin (western Argentina). It is based on the analysis of a high-resolution satellite images linked with extensive field data. Its main goal is to present a conceptual model for the studied tur...

Geophysical Research AbstractsVol. 14, EGU2012-9402, 2012EGU General Assembly 2012© Author(s) 2012 Turbidite Systems in Brazil: From Outcrops to Deep WatersR. S. F. d′Avila (1), L. M. Arienti (1), F. F. Vesely (1,2), S. F. Santos (1), and H. E. Voelcker (1)(1) Petrobras - Petroleo Brasileiro S.A., (2) UFPr - Federal University of Paraná State - Bra...

This presentation characterizes the main facies associations (turbidites, mass transport deposits / chaotic beds, rain-out deposits and background pelitic sedimentation) and the sequence stratigraphic interpretation of the Permocarboniferous Itararé Group, Paraná Basin (Gondwana Carboniferous Glaciation deposits) in Dr. Pedrinho Area, Santa Catarin...

abstract A new classification of carbonate rocks is proposed seeking to cover the entire spectrum of their occurrence in Brazilian basins. Emphasis is given to those in oil exploration and production locations, especially since the discovery of giant oil fields in the so called Pre-Salt section. This classification is a synergy between the various...

abstract A new classification of carbonate rocks is proposed seeking to cover the entire spectrum of their occurren - ce in Brazilian basins. Emphasis is given to those in oil exploration and production locations, especially since the discovery of giant oil fields in the so called Pre-Salt section. This classification is a synergy between the...

Clastic deposits produced by turbidity currents and related gravity flows are responsible for almost 90% of petroleum produced in Brazil. The study of Turbidite Systems from Itajaí, Paraná, Santos and Campos Basins, from outcrops and subsurface, early cambrian to recent deposits, formed in different tectonic settings and systems tracts, allowed a c...

A new classification of carbonate rocks is proposed seeking to cover the entire spectrum of their occurrence in Brazilian basins. Emphasis is given to those in oil exploration and production locations, especially since the discovery of giant oil fields in the so called Pre-Salt section. This classification is a synergy between the various existing...

Fluidos e fluxos; processos no ambiente marinho profundo; turbiditos; sistemas turbidíticos e depósitos associados; exemplos brasileiros

Outcrops of sedimentary strata from Mafra and Rio do Sul formations (Itararé Group, Paraná Basin) constitutes the record of the Gondwana permocarboniferous glaciation in Santa Catarina state, southern Brazil. These deposits were mainly deposited in glacially influenced prodeltaic and in relatively deep and distal settings related to marine glaciers...

ABSTRACT The Pliensbachian to Early Callovian Cuyo Group in the Arroyo La Jardinera area reflects a shelf-slope-basin plain physiography. A major unconformity defines the onset of a thick turbidite succession and represents a 2nd order sequence boundary. The older 2nd order depositional sequence comprises the base of Los Molles Formation and inclu...

The Pliensbachian to Early Callovian Cuyo Group in the Arroyo La Jardinera area reflects a shelf-slope-basin plain physiography. A major unconformity defines the onset of a thick turbidite succession and represents a 2nd order sequence boundary. The older 2nd order depositional sequence comprises the base of Los Molles Formation and includes a tran...

The Pliensbachian to Early Callovian Cuyo Group in the arroyo La Jardinera area reflects a shelf-slope-basin plain physio-graphy. A major unconformity defines the onset of a thick turbidite succession and represents a 2 nd order sequence boundary. The older 2 nd order depositional sequence comprises the base of Los Molles Formation and includes a t...

The Jubarte oil field, about three billion barrels oil in place, is located in the Northern Campos Basin, in water depths ranging around 1250m. Deep troughs created by salt-rooted growth faults were the preferential pathways for the Maastrichtian sediment-rich gravity flows. The Jubarte trough, 8 to 14km long and 1.5 to 5.5km wide, was filled in by...

The sedimentological characterization of gas-prone Santos Basin upper Cretaceous turbidite systems was obtained from 3D-seismic attribute maps, well logs cores and biostratigraphic data. Cores from Santonian and Campanian sand-rich turbidite systems are characterized by metric normal graded beds of compositional/textural immature sands. The most co...

ABSTRACT In the continental portion of the Almada Basin outcrops of canyon filling deposits are represented by turbidite channels and associated facies from Urucutuca Formation. The canyon - semi-exumated – eroded basement and pre-Cenomanian sedimentary rocks. The field study of the outcrops and cores obtained in adjacent perforations lead to the u...

The Lapa Sandstone, an informal stratigraphic unit of the Itararé Group, dated as westphalian/stephanian age, is a sinuous N-S oriented channelized body, measuring more than 50km in lenght and SOOm in width. This sandstone crops out as elongated cliffs, up to 150m in height, in the region between Lapa (PR) and Rio Negrinho (SC) cities. Outcrops of...

The deep sea environment includes a great variety of clastic, biogenic, authigenic, volcanogenic and cosmogenic sediments. Of special importance are those clastic deposits produced by turbidity currents and related gravity f lows, which form the turbidite systems. Turbidite sandstone reservoirs are responsible for almost 90% of petroleum produced f...