Browsing Institutt for geovitenskap og petroleum by Title
Now showing items 502-521 of 2587
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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, ... -
Deep Crustal Flow Within Postorogenic Metamorphic Core Complexes: Insights From the Southern Western Gneiss Region of Norway
(Journal article; Peer reviewed, 2019)Viscous crustal flow can exhume once deeply buried rocks in postorogenic metamorphic core complexes (MCCs). While migmatite domes record the flow dynamics of anatectic crust, the mechanics and kinematics of solid‐state ... -
Deep learning of terrain morphology and pattern discovery via network-based representational similarity analysis for deep-sea mineral exploration
(Journal article; Peer reviewed, 2021)The race to explore valuable metals in the deep ocean recently emerged, and nations now seek to secure prospective areas for minerals that may support the low-carbon transition, from electric vehicles to wind turbines. ... -
Deep processes in the Reinfjord Ultramafic Complex, Nord-Troms A study of chromian Spinels and fractionation idicators in a layered ultramafic intrusion
(Master thesis, 2019)Reinfjord Ultramafiske Kompleks er et av flere magmatiske rot-systemer i Seiland Magmatiske Provins i Nord Norge. Ved 25-45 km dybde passerte flere tusen km3 med ultramafisk astenosfærisk magma gjennom rot-systemet på vei ... -
Deep Sea Mining: Towards Conceptual Design for Underwater Transportation
(Chapter, 2020)This paper presents the first steps towards conceptual design for the underwater transportation of minerals from seabed to shore for deep sea mining (DSM). The methodology is based on conceptual design using a systematic ... -
Deep structure and sub-basalt exploration of the mid-Norwegian margin with emphasis on the Møre margin
(Doctoral Theses at NTNU, 1503-8181; 2010:154, Doctoral thesis, 2010)This thesis addresses the use of potential field data in two main topics: sub-basalt exploration and structure of the deeper crust. Synthetic models and forward models of the Møre margin were constructed to test the ... -
Deep water Riserless Drilling
(Master thesis, 2011)This master thesis presents different techniques for riserless drilling in deep waters. The objective has been to see advantages and challenges as well as limitations concerning the different solutions presented and identify ... -
Deep-Sea Mining–A Bibliometric Analysis of Research Focus, Publishing Structures, International and Inter-Institutional Cooperation
(Journal article; Peer reviewed, 2022)Deep-sea mining is a multidimensional concept that requires interdisciplinary research and development to close the current knowledge gaps. This study conducts a bibliometric analysis of the research focus, publishing ... -
Deep-seated faults and hydrocarbon leakage in the Snøhvit Gas Field, Hammerfest Basin, Southwestern Barents Sea
(Peer reviewed; Journal article, 2016)High-quality 3D seismic data are used to analyze the history of fault growth and hydrocarbon leakage in the Snøhvit Field, Southwestern Barents Sea. The aim of this work is to evaluate tectonic fracturing as a mechanism ... -
Deep-seated faults and hydrocarbon leakage in the Snøhvit Gas Field, Hammerfest Basin, southwestern Barents Sea
(Master thesis, 2015)Abstract High-quality 3D seismic data are used to analyze the history of fault growth and hydrocarbon leakage in the Snøhvit Field, southwestern Barents Sea. The aim of this work is to evaluate role of tectonic fracturing ... -
Deepwater Drilling: Return Flow Through Hose
(Master thesis, 2010)As the petroleum industry enhances their efforts to locate and produce fields in more and more challenged areas, bigger and deeper boreholes are required. The hydraulics of the borehole suddenly becomes the major power ...