Metal and hydrocarbon behavior in sediments from Brazilian shallow waters drilling activities using nonaqueous drilling fluids (NAFs)

The impact of drilling oil activities in the Brazilian Bonito Field/Campos Basin (Rio de Janeiro) shell drilling (300 m) using nonaqueous fluids (NAFs) was investigated with respect to Al, Fe, Mn, Ba, Co, Pb, Cu, As, Hg, Cr, Ni, Zn, Cd, V, and aliphatic and polynuclear aromatic hydrocarbons concentr...

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Published in:Environmental monitoring and assessment 2010-08, Vol.167 (1-4), p.33-47
Main Authors: Peralba, Maria do Carmo R, Pozebon, Dirce, dos Santos, João H. Z, Maia, Sandra M, Pizzolato, Tânia M, Cioccari, Giovani, Barrionuevo, Simone
Format: Article
Language:English
Subjects:
Aluminum
Analysis
Anthropogenic factors
Aromatic hydrocarbons
Atmospheric Protection/Air Quality Control/Air Pollution
Brazil
Cadmium
Chromium
Copper
Cruises
Drilling
Drilling fluids
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental monitoring
Environmental Monitoring - methods
Extraction and Processing Industry
Fluids
Geologic Sediments - analysis
Hydrocarbons
Investigations
Iron
Laboratories
Marine sediment
Metals
Metals - analysis
Mineral oils
Monitoring/Environmental Analysis
NAFs
Nickel
Offshore drilling
Oil and gas exploration
Petroleum
Pollution
Polynuclear aromatic hydrocarbons
Sediments
Shallow water
Studies
Toxicity
Water Pollutants - analysis
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cited_by cdi_FETCH-LOGICAL-c459t-eaaa09db122f58459b0d602d2785b62c37e8711b2c99672e06fc81f52c0f2f53
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creator Peralba, Maria do Carmo R
Pozebon, Dirce
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Cioccari, Giovani
Barrionuevo, Simone
description The impact of drilling oil activities in the Brazilian Bonito Field/Campos Basin (Rio de Janeiro) shell drilling (300 m) using nonaqueous fluids (NAFs) was investigated with respect to Al, Fe, Mn, Ba, Co, Pb, Cu, As, Hg, Cr, Ni, Zn, Cd, V, and aliphatic and polynuclear aromatic hydrocarbons concentrations in the sediment. Sampling took place in three different times during approximately 33 months. For the metals Al, As, Co, Cr, Cu, Cd, Fe, Ni, Mn, V, and Zn, no significant variation was observed after drilling activities in most of the stations. However, an increase was found in Ba concentration—due to the drilling activity—without return to the levels found 22 months after drilling. High Ba contents was already detected prior to well drilling, probably due to drilling activities in other wells nearby. Hydrocarbon contents also suggest previous anthropogenic activities. Aliphatic hydrocarbon contents were in the range usually reported in other drilling sites. The same behavior was observed in the case of polyaromatic hydrocarbons. Nevertheless, the n-alkane concentration increased sharply after drilling, returning almost to predrilling levels 22 months after drilling activities.
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High Ba contents was already detected prior to well drilling, probably due to drilling activities in other wells nearby. Hydrocarbon contents also suggest previous anthropogenic activities. Aliphatic hydrocarbon contents were in the range usually reported in other drilling sites. The same behavior was observed in the case of polyaromatic hydrocarbons. 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Sampling took place in three different times during approximately 33 months. For the metals Al, As, Co, Cr, Cu, Cd, Fe, Ni, Mn, V, and Zn, no significant variation was observed after drilling activities in most of the stations. However, an increase was found in Ba concentration—due to the drilling activity—without return to the levels found 22 months after drilling. High Ba contents was already detected prior to well drilling, probably due to drilling activities in other wells nearby. Hydrocarbon contents also suggest previous anthropogenic activities. Aliphatic hydrocarbon contents were in the range usually reported in other drilling sites. The same behavior was observed in the case of polyaromatic hydrocarbons. 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subjects Aluminum
Analysis
Anthropogenic factors
Aromatic hydrocarbons
Atmospheric Protection/Air Quality Control/Air Pollution
Brazil
Cadmium
Chromium
Copper
Cruises
Drilling
Drilling fluids
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental monitoring
Environmental Monitoring - methods
Extraction and Processing Industry
Fluids
Geologic Sediments - analysis
Hydrocarbons
Investigations
Iron
Laboratories
Marine sediment
Metals
Metals - analysis
Mineral oils
Monitoring/Environmental Analysis
NAFs
Nickel
Offshore drilling
Oil and gas exploration
Petroleum
Pollution
Polynuclear aromatic hydrocarbons
Sediments
Shallow water
Studies
Toxicity
Water Pollutants - analysis
title Metal and hydrocarbon behavior in sediments from Brazilian shallow waters drilling activities using nonaqueous drilling fluids (NAFs)
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