Browsing Institutt for geovitenskap og petroleum by Title
Now showing items 512-531 of 2656
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Dagbruddsalternativer i en industrimineralforekomst
(Master thesis, 2013)I denne oppgaven er det gjort et forsøk på å optimalisere utvidelsen av marmorbruddet til Brønnøy Kalk AS og dele det inn i pushbacker. Dataverktøyet NPV Scheduler er brukt for å generere optimaliserte bruddalternativer ... -
Dagbruddsdesign med diskontering av kontantstrøm
(Master thesis, 2016)«Dagbruddsdesign med diskontering av kontantstrøm» er en masteroppgave skrevet at Eirik Hjelle. Oppgaven er utført ved Institutt for geologi og bergteknikk (IGB) ved Norges teknisk-naturvitenskapelige universitet (NTNU). Rana ... -
Dagbruddsstabilitet i Norcem Kjøpsvik
(Master thesis, 2019)Sammendrag Dagbruddsområdet til Norcem Kjøpsvik er i en situasjon hvor en optimalisering av dagbruddets vegg er av interesse. Denne oppgavens mål er å undersøke total- og detaljstabilitetsforholdene for endelig planlagt ... -
Dannelse av sulfidforekomster i Reinfjord og Lokkarfjord, Seiland magmatiske provins - En svovelisotopstudie av økonomisk interessante sulfid-forekomster dannet i forbindelse med ultramafisk magmatisk aktivitet.
(Master thesis, 2013)En systematisk petrografisk-geokjemisk oversikt av sulfidforekomstene i Reinfjord (Troms) og Lokkarfjord (Finnmark) i Nord-Norge blir her gitt. Hensikten med oppgaven er å øke forståelsen for geologien i området, spesielt ... -
Dannelse av sulfidforekomster i Reinfjord og Lokkarfjord, Seiland magmatiske provins: En svovelisotopstudie av økonomisk interessante sulfid-forekomster dannet i forbindelse med ultramafisk magmatisk aktivitet.
(Master thesis, 2013)En systematisk petrografisk-geokjemisk oversikt av sulfidforekomstene i Reinfjord (Troms) og Lokkarfjord (Finnmark) i Nord-Norge blir her gitt. Hensikten med oppgaven er å øke forståelsen for geologien i området, spesielt ... -
Data analysis on numerical simulation results to determine the effectiveness of mitigation measures for hydrodynamic slugging in an oil and gas asset on the Norwegian Continental Shelf.
(Master thesis, 2022)Multi-phase flow-related issues in subsea pipelines and risers may cause a lot of problems in oil and gas production. One of these issues is hydrodynamic slugging. This unwanted phenomenon which is an oscillatory flow may ... -
Data descriptor: A chemical, crystallographic and magnetic characterisation of individual iron-oxide grains in Hawaiian lavas
(Journal article; Peer reviewed, 2018)Our knowledge on the behaviour of the geomagnetic field through time critically depends on how information of the past state of the field is recorded by, and stored in iron-bearing minerals such as magnetite. For small, ... -
Data Ming of Exploration and Production Data for Well Planning - A prototype illustrating how data mining can be useful in well planning
(Master thesis, 2016)This thesis investigates data mining and the well planning process in field development. It will first provide some background on data mining, two data mining algorithms and areas where data mining can be applied in the ... -
Data-driven Borehole Imaging and Monitoring
(Doctoral theses at NTNU;2017:329, Doctoral thesis, 2017) -
Data-driven derivative-free trust-region model-based method for resource allocation problems
(Peer reviewed; Journal article, 2023)Allocating a limited available resource between a set of units is a problem that arises in several application areas. We propose an online derivative-free trust-region model-based method to tackle a fairly general version ... -
Data-Driven Optimization of Multiple Gas-Lifted Wells by Using Extremum Seeking Control
(Master thesis, 2023)Denne oppgaven utforsker anvendelsen av Extremum Seeking Control (ESC) for å optimalisere gassløfteoperasjoner i olje- og gassindustrien. Gassløft er en mye brukt kunstig løftemetode som øker produksjonshastigheten til ... -
Data-Driven Reservoir Modeling: Application of Proxy Models in Reservoir Management
(Doctoral theses at NTNU;2023:183, Doctoral thesis, 2023)This Ph.D. thesis consists of 8 papers that summarize the main contents of the research work done over the past 3 years. Due to the ability of machine learning (ML) in capturing high nonlinearity, the thesis mainly touches ... -
Dating of Late Jurassic Black Shales on the Norwegian Shelf by Magnetic Cyclostratigraphy
(Master thesis, 2020)Dette prosjektet undersøker de organisk rike svartskifrene fra Sen Jura fra Spekk og Hekkingen Formasjonene i to kjerner på norsk sokkel. Sen Jura til Tidlig Kritt organisk rik svartskifer ble avsatt på norsk sokkel under ... -
Decay estimation in nonlinear hyperbolic system of conservation laws
(Journal article; Peer reviewed, 2011)In this paper we study some decay estimates in nonlinear hyperbolic system of conservation laws. This research is not only interesting in itself but also crucial in studying the large time behavior problem. By introducing ... -
Deciphering magmatic processes in the 565 Ma Umbukta gabbro, Rødingsfjellet Nappe Complex, Northern Norway
(Master thesis, 2017)The Umbukta gabbro, emplaced in Rødingsfjellet nappe complex in Nordland, have been investigated, with focus on the geochemistry, field observations and petrography. This tholeiitic gabbro has an intrusive age of 565 ± 20 ... -
Decision Framework for Well Delivery Processes - Application of Analytical Methods to Decision Making
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:30, Doctoral thesis, 2007)A major portion of unproduced oil and gas resources are located in deep-water areas, often at sea level depths between 1500 and 3000 metres. Development of these fields with conventional technology necessitates increasing ... -
Decision support method for early-phase design of offshore hydrocarbon fields using model-based optimization
(Journal article; Peer reviewed, 2019)This paper presents the development of a method to provide decision support in the feasibility studies and concept planning phases of oil and gas field development. The objective in developing the methodology was to provide ... -
Decision support methods for optimizing subsea hydrocarbon production systems with processing equipment
(Doctoral theses at NTNU;2024:111, Doctoral thesis, 2024)As the use of subsea processing increases and technology advances, subsea layout possibilities and configurations diversify and get more complex, causing manual design processes to be cumbersome and often suboptimal. ... -
Decision-Support Methods for Early Offshore Field Planning Based on Optimization and Proxy Modelling
(Master thesis, 2021)Field development planning is an essential phase in the life of an offshore field as many vital decisions, such as type of platform, production and drilling schedule, and capacity of processing facilities, are made during ... -
Deconvoluting complex structural histories archived in brittle fault zones
(Journal article; Peer reviewed, 2016)Brittle deformation can saturate the Earth’s crust with faults and fractures in an apparently chaotic fashion. The details of brittle deformational histories and implications on, for example, seismotectonics and landscape, ...