scholarly journals Alguns parâmetros utilizados na avaliação hidrogeoquímica de um campo petrolífero na Bacia de Campos (RJ): estudos preliminares

1994 ◽  
Vol 17 ◽  
pp. 132-156
Author(s):  
Sergio Luiz Nogueira de Azevedo ◽  
Carla Valéria Martins Rodrigues ◽  
Antonio Carlos Jacome de Castro
Keyword(s):  
Clay Minerals ◽  
Oil Field ◽  
Formation Water ◽  
Circulation Zone ◽  
Isotopic Data ◽  
Genetic Classification ◽  
Strong Point ◽  
Campos Basin ◽  
Basic Facts

The study of the formation water is receiving a great importance, as a tool in the studies of migration, weathering and accumulation of hidrocarbons. The present study is based on the interpretation of chemical and isotopic data of formation water belonging to Lagoa Feia and the Macae Formations of the Campos Basin oil field. The purpose of mecanisms for evolution and genetic classification of formation water, that was intended in the recent study, determined theirs sources and hydrogeological environments in question. Finnaly, these basic facts were related with the possibility, or not, of accumulation of hydrocarbons. The sample from Campo X point towards existence of "stagnated environments" with low circulation of water, inclined for accumulation of hydrocarbons, shuting out sample 4 (four), belong to Lagoa Feia Formation, is described how indued in the hydrodinamic circulation zone. The strong point of dolomitization and water reaction with clay minerals shows an influence of the meteoric diagenetic environments, proving that before the establishment of estagnated condition observed, probably the water of Campo X received a strong meteoric influence. The waters studied are resulted of one mixture of waters from different brines among these waters originated by evaporation are included. It's possible, because high brines of Lagoa Feia Formation could have some vulcanic contribution.

scholarly journals Diagenesis Processes Impact on Reservoir Quality in Carbonate Yamama Formation /Faihaa Oil Field

2020 ◽  
pp. 92-102
Author(s):  
Mohammed A. Ahmed ◽  
Madhat E. Nasser ◽  
Sameer N. AL Jawad
Keyword(s):  
Oil Field ◽  
Reservoir Quality ◽  
Genetic Classification ◽  
Thin Sections ◽  
Positive Effects ◽  
Diagenetic Processes ◽  
Porosity And Permeability ◽  
Cretaceous Period ◽  
The Impact

The Yamama Formation is a significant reservoir in the southern part of Iraq. This formation consists of limestone deposited throughout the Lower Cretaceous period within main retrogressive depositional series. This study aims to identify the impact of the diagenesis processes on the reservoir’s characteristics (porosity and permeability). Diagenesis processes’ analysis and the identification of Yamama Formation depended on the examination of more than 250 thin sections of the core samples from two wells that were used to determine different diagenetic environments and processes. The three identified diagenetic environments that affected Yamama reservoir were the marine, meteoric and burial environments. Eight diagenetic processes were recognized in Yamama Formation and showed positive and destructive effects on the reservoir quality; Dissolution and fracture had highly positive effects through creating and improving porosity and permeability that led to improving reservoir quality. Cementation and compaction had destructive effects, through reducing porosity and permeability, that led to reducing reservoir quality. Other processes such micritization, dolomitization, bioturbation and neomorphism did not have strong effects on reservoir quality. Based on genetic classification of porosity, most of porosity within Yamama Formation in this field was formed by diagenesis processes, implying that Yamama reservoir is a type of diagenetic reservoir.

Abstract 2276: Genetic classification of colorectal cancer

2021 ◽  
Author(s):  
Yoshikage Inoue ◽  
Nobuyuki Kakiuchi ◽  
Kenichi Yoshida ◽  
Yasuhito Nanya ◽  
Yusuke Shiozawa ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Genetic Classification

DNA relatedness of oil-field isolates of Shewanella putrefaciens

1989 ◽  
Vol 35 (10) ◽  
pp. 925-931 ◽  
Author(s):  
Kathleen M. Semple ◽  
James L. Doran ◽  
D. W. S. Westlake
Keyword(s):  
Iron Reduction ◽  
Shewanella Putrefaciens ◽  
Oil Field ◽  
The Other ◽  
Nucleic Acid Hybridization ◽  
Dna Relatedness ◽  
Field Isolates ◽  
Shewanella Species ◽  
Sulfide Production

Classification of several oil-field isolates of Shewanella putrefaciens was assessed by nucleic acid hybridization techniques. The results of DNA – DNA hybridization analysis generally confirmed the phenetic characterization of these isolates and supported the classification of oil-field isolates of S. putrefaciens groups 1, 3, and 4. However, two group 2 isolates were considered to be mistakenly classified. Strain ESSO 1-1 appeared to belong to group 3, a result which was supported by the pattern of 5S rRNA hybridization to restriction digests of genomic DNA, and strain 213 appeared to be a member of group 1. Several of the oil-field strains of S. putrefaciens were found to possess indigenous plasmids, a feature which was not shared by the other strains of S. putrefaciens examined. This study indicates mat these oil-field isolates were more closely related to strains of S. putrefaciens isolated from various environments than to the other Shewanella species (S. benthica and S. hanedai) that shared the important metabolic characteristics of iron reduction and sulfide production from thiosulfate. There was very little genetic relationship found between Shewanella spp. and the other species studied.Key words: Shewanella putrefaciens, DNA relatedness, oil-field iron reduction, sulfide production, taxonomy.

The Challenges of Developing a Deep Offshore Heavy-Oil Field in Campos Basin

2007 ◽  
Author(s):  
Fernando Pacifico Figueiredo ◽  
Celso Cesar M. Branco ◽  
Fabio Prais ◽  
Marcelo Curzio Salomao ◽  
Cristina Cledia Mezzomo
Keyword(s):  
Heavy Oil ◽  
Oil Field ◽  
Campos Basin
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