Browsing Master's theses (TN-IMN, 2007-2017) by Subject "teknisk miljøvern"
Now showing items 21-40 of 105
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CO2 and H2S corrosion in oil pipelines
(Masteroppgave/UIS-TN-IMN/2010;, Master thesis, 2010)This study has been conducted to find the corrosion behavior and corrosion rates of carbon steel in the presence of CO2 and H2S at various pH levels using classical electrochemical techniques. It was found that in a ... -
Cold water coral Lophelia Pertusa biosensor
(Masteroppgave/UIS-TN-IMN/2014;, Master thesis, 2014-06-30)The oil and gas industry is required to have a monitoring capacity that makes it possible to fulfill the regulatory requirements in the areas they operate today and intend to operate in the future. Because of the relative ... -
Design and cost evaluation of anaerobic bioreactor for industrial waste
(Masteroppgave/UIS-TN-IMN/2017;, Master thesis, 2017-06-21)Industrial wastewater with very high Total Organic Carbon (TOC) is a potential substrate for anaerobic treatment. Continuous Flow Stirred Tank Reactor (CSTR) is the common model of reactor used to treat various kind of ... -
Destabilization and separation of drilling mud by utilizing chemicals and mechanical equipment
(Masteroppgave/UIS-TN-IMN/2014;, Master thesis, 2014-06-25)The research of this thesis was aimed to test new chemical mixtures for drilling fluid waste treatment and optimize them for different type of oil-based drilling muds. The research included two steps: pre-screening and ... -
Determination of the Effect of Constructed Wetlands on the Bioavailability of Phosphorus
(Masteroppgave/UIS-TN-IMN/2016;, Master thesis, 2016-06): Phosphorus is the limiting nutrient in most freshwater aquatic environments. When a large amount of phosphorus enters a freshwater environment, such as a lake, this causes a rapid increases in primary production which ... -
DREAM (Dose-related Risk and Exposure Assessment Model) as a tool to predict biomarker responses in offshore produced water discharge situations
(Masteroppgave/UIS-TN-IMN/2009, Master thesis, 2009-11-25)Every year, approximately 200 million tones of produced water are discharged into the sea by the Norwegian oil industry. Although rapidly diluted, due to its large amount and possible long term (chronic) effects, the ... -
Drift og optimalisering av flash separatoren i en glykol reclamation enhet
(Masteroppgave/UIS-TN-IMN/2009;, Master thesis, 2011)Monoetylenglykol (MEG) benyttes ofte som inhibitor for å unngå hydrater i subsea gasstransportrør. MEG er en miljøvennlig inhibitor, som kan resirkuleres om regenerering benyttes. Regenerering av MEG involverer to trinn; ... -
Effect of pre-exposure of sulfur and iron sulfide on H2S corrosion at different temperatures
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)The study has been carried out to investigate the effect of elemental sulfur and iron sulfide on corrosion behavior of carbon steel in sour environment. It was found that both compounds could form a protective layer of ... -
Effect of precorrosion by galvanostatic anodic polarization and temperature on the formation rate of iron (ii) carbonate film
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)Corrosion on the inside walls of steel pipelines and process equipment is mostly caused by CO2 which can cause property damage on the production and the transport of oil and natural gas. In order to control corrosion of ... -
Effect of salinity on biological treatment of wastewater from oil industry
(Masteroppgave/UIS-TN-IMN/2009, Master thesis, 2009)High salinity may affect biological wastewater negative by reducing the growth rate of microorganisms. Wastewater from oil industry often contains high salinity which could be problematic to treat. This thesis is to evaluate ... -
Effect of temperature, bicarbonate, and MEG concentration on pre-corroded carbon steels
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)CO2 corrosion in carbon steel has been a major problem in many of oil and gas fields for years. One method that has been known to be effective for corrosion control especially in pipeline is pH stabilization. This method ... -
Effect studies of different oil and dispersant exposures on keystone pelagic zooplankton species in arctic environments
(Masteroppgave/UIS-TN-IMN/2013;, Master thesis, 2013)Expanding petroleum activities into northern marine areas have resulted in need for tools that specify Arctic specific characteristics when assessing environmental risks for these regions. In order to estimate the environmental ... -
Effects of spiking phosphate on NF ion separation of sea water for designed water
(Masteroppgave/UIS-TN-IMN/2015;, Master thesis, 2015-06)The thesis investigates the Effects of spiking phosphate on nanofiltration (NF) membrane ion separation for production of phosphate-containing designed water. Enhanced oil recovery in carbonate reservoir by seawater injection ... -
Environmental consequences associated with a large-scale blowout of oil in the former disputed area between Norway and Russia in the Barents Sea (a case study)
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)The former disputed area between Norway and Russia in the Barents Sea is of increasing interest when it comes to oil and gas exploration and production. The area is likely to open for exploration in the near future as the ... -
Establishing a new high pressure steel multi-cell rocker rig for kinetic hydrate inhibitor testing
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011)Low dosage hydrate inhibitors (LDHIs) is a cost-effective alternative to traditional thermodynamic inhibitors (THIs), like methanol and glycols, to prevent the occurrence of natural gas hydrates in gas and oilfield operations. ... -
Establishment of new equipment for testing low dosage hydrate inhibitors
(Masteroppgave/UIS-TN-IMN/2013;, Master thesis, 2013)Gas hydrate formation posses a notorious concern for the oil and gas industry, and it only gets bigger because of that the never-ending pursuit of oil and gas compels the industry into deeper and colder waters. Here gas ... -
Evaluation and testing of different pre-treatment procedures for making sludge liquor suitable as a nutrient source for growth of microalgae
(Masteroppgave/UIS-TN-IMN/2010;, Master thesis, 2010)The objective for this thesis is to find a proper pre-treatment for sludge liquor for the purpose of growing microalgae in the treated solution. Sludge liquor (also called reject water) is the reject/centrate after the ... -
Evaluation of kinetic hydrate inhibitors in 1.1 s.g. DW WBM
(Masteroppgave/UIS-TN-IMN/2011;, Master thesis, 2011-06)Intention: This thesis is written as a finishing part of my master degree at the University of Stavanger (UiS). The project has been in collaboration with MI-SWACO, A Schlumberger Company, with Irene M. Færgestad as my ... -
Evaluation of metal- and PAH toxicity of thermo treated oil-based drill cuttings by the use of DREAM sediment model
(Masteroppgave/UIS-TN-IMN/2015;, Master thesis, 2015-06-28)Dose-related Risk and Exposure Assessment Model (DREAM) is a risk assessment tool used for modulations of offshore waste discharges effects on the marine environment. The model was first developed in order to estimated the ... -
Evaluation of Radio Frequency Heating and Microwave Radiation for Treatment of Oil Contaminated Drill Cuttings
(Masteroppgave/UIS-TN-IMN/2017;, Master thesis, 2017-06)Current market challenges make the improvement in drill cuttings treatment technology necessary. Oil companies strive towards robust and environmental friendly treatment solution that allow for high treatment capacity and ...