Pseudoporosity Calculation based on Seismic Attributes Analysis in Albian Carbonate Reservoirs – SW of Campos Basin (Rio de Janeiro – Brazil)

2017 ◽  
Author(s):  
Luana Fernandes do Nascimento ◽  
Maria Gabriela Castillo Vincentelli
2017 ◽  
Vol 35 (2) ◽  
Author(s):  
Milena Cristina Rosa ◽  
Maria Gabriela Castillo Vincentelli

ABSTRACT. The geological complexity of carbonate reservoirs formed by coquinas at the rift section of Campos and Santos basins has been directing the studies aiming efforts to understand this type of reservoir, even in an analogue form. The application of this analysis intends to help the understanding of the main physical properties distribution and the geometric permo-porous system associated to the potential reservoir levels located in carbonate reservoirs formed by coquinas in the Upper Barremian – Lower Aptian in Campos Basin. The method uses seismic attributes generated from 3D seismic and their correlation with the petrophysical property as porosity from well logs. Considering two pre-defined reservoir levels (CI-A and CS), the correlation between the main physical properties (well logs and petrophysical analysis) and the seismic attributes of amplitude and sweetness showed correlation coefficients ranging from R2≥0.7 to R2≤0.92. This integration of this petrophysical analysis with the seismic interpretation concludes that the porosity distribution at the reservoir level CI-A has higher influence of the tectonic structure, when compared to the reservoir level CS, with the best porosities (8% to 24%) following the main structures with NW-SE direction. The porosity values from reservoir level CS has a homogeneous distribution and reduces porosity towards South-Southeast, following the thickness decrease of these coquinas reservoir level. Keywords: seismic interpretation, reservoir-levels, petrophysics, coquinas. RESUMO. A complexidade geológica dos reservatórios carbonáticos formados por coquinas da seção rifte das bacias de Campos e Santos tem direcionado estudos, mesmo que de uma forma análoga, para entender a distribuição de suas principais propriedades físicas e o comportamento geométrico do seu sistema permo-poroso. O método proposto contempla o uso de atributos sísmicos que são gerados a partir de um volume sísmico de amplitude e a sua correlação com a porosidade, calculada a partir dos perfis de poço, e tem como objetivo contribuir para a definição de potenciais níveis-reservatório de interesse e na definição da geometria do sistema permo-poroso associado a reservatórios carbonáticos formados por coquinas do neobarremiano-eoaptiano da Bacia de Campos. Considerando dois níveis-reservatório predefinidos (CI-A e CS), a correlação entre as principais propriedades físicas (perfil de poço e petrofísica) e os atributos sísmicos de amplitude e Sweetness apresentaram coeficientes de correlação que vão de R2≥0.7 até R2≤0.92. Finalmente a análise da distribuição da porosidade para o nível-reservatório CI-A mostra uma alta influência da estruturação tectônica na distribuição dessa propriedade, se comparado com o nível CS, com as melhores porosidades (8% a 24%) seguindo as principais estruturas com direção NW-SE. Os valores de porosidade para o nível CS se distribuem de modo mais homogêneo e diminuem para sul e sudeste juntamente com a diminuição das espessuras dos níveis-reservatórios de coquinas. Palavras-chave: interpretação sísmica, níveis-reservatório, petrofísica, coquinas.


2020 ◽  
Vol 68 (5) ◽  
pp. 446-464
Author(s):  
Norbert Clauer ◽  
Jan Środoń ◽  
Amélie Aubert ◽  
I. Tonguç Uysal ◽  
Theofilos Toulkeridis

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 109-118 ◽  
Author(s):  
MARIANA DA FONSECA CAVALCANTI ◽  
MARIA CRISTINA DA SILVA ◽  
VERÔNICA DA FONSÊCA-GENEVOIS

A new genus and species of Desmodoridae was found in deep-sea sediments of the Campos Basin. Although the cuticle annulation of the new species is similar to members of Desmodorinae, many morphological features are strong enough to classify it within the Spiriniinae. Spirodesma magdae nov. gen. nov. sp. is characterized mainly by the presence of a unique form of unispired amphids, with circular amphideal fovea, and a buccal cavity with three equal teeth, one dorsal and two ventrosublateral.


Zootaxa ◽  
2007 ◽  
Vol 1402 (1) ◽  
pp. 39 ◽  
Author(s):  
ALESSANDRA PRATES BOTELHO ◽  
MARIA CRISTINA DA SILVA ◽  
ANDRÉ MORGADO ESTEVES ◽  
VERÔNICA FONSÊCA-GENEVOIS

Sabatieria is the most abundant genus along the Campos Basin, Rio de Janeiro (Brazil). Four new species of Sabatieria (Nematoda-Comesomatidae) from the Continental Slope of Atlantic Southeast are described. Sabatieria spiculata sp.nov. is characterized by the size of spicule and the presence of dorsal tooth ; S. paraspiculata sp. nov. by tail shape and the maximum diameter; S. bitumen sp. nov. by spicule shape with an arrow-like distal part and the S. subrotundicauda sp.nov. by a round tail and reflected ovary.


Zootaxa ◽  
2009 ◽  
Vol 2081 (1) ◽  
pp. 31-45 ◽  
Author(s):  
MARIA CRISTINA DA SILVA ◽  
FRANCISCO JOSÉ VICTOR DE CASTRO ◽  
MARIANA DA FONSECA CAVALCANTI ◽  
VERÔNICA DA FONSÊCA-GENEVOIS

In deep-sea sediments from Campos Basin two new species of Spirinia were found. Spirinia lara sp. n. is mainly characterized by the presence of paired somatic papillae linked to gland cells and distributed all over the body while Spirinia sophia sp. n. possesses an irregular distribution of these glandular somatic papillae.


Zootaxa ◽  
2013 ◽  
Vol 3626 (1) ◽  
pp. 146-172
Author(s):  
ORLEMIR CARRERETTE ◽  
JOÃO MIGUEL DE MATOS NOGUEIRA

Four new species of Polycirrus were collected at the Campos Basin, state of Rio de Janeiro, during a survey coordinated by CENPES/PETROBRAS under the scope of the project, "Environmental Heterogeneity in the Campos Basin". These species are P. nonatoi sp. nov., P. papillosus sp. nov., P. breviuncinatus sp. nov., and P. habitats sp. nov. All these species are herein described and compared with the morphologically most similar congeners. In addition, a key is provided for the identification of the species of Polycirrus which have been originally described for the Brazilian coast.


Author(s):  
Melayne M. Coimbra ◽  
Cátia F. Barbosa ◽  
Abı́lio Soares-Gomes ◽  
Cleverson G. Silva ◽  
Aristóteles Rios-Netto ◽  
...  

1988 ◽  
Vol 1 (21) ◽  
pp. 17 ◽  
Author(s):  
Maria Helena Severo De Souza ◽  
Carlos Eduardo Parente Ribeiro

The offshore area northern off Rio de Janeiro State (fig. 1a) is a big oil production region known as Campos basin. In some locations oil is being exploited in water depths of A00 meters, among the largest in the world and new promising fields shall be exploited above 1000 meters. The design and operation of structures and other oceanic systems for such depths is being a big challenge for ocean engineers and the knowledge of environmental conditions is of paramount importance. Wave data is still scarce in the area mainly that concerned with directional spectra.


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