Browsing Institutt for geovitenskap og petroleum by Title
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Methods for Attenuation of Seismic Ground Roll and 4D Traveltime Inversion Using Diving Waves
(Doctoral thesis at NTNU;, Doctoral thesis, 2014)The thesis comprises methods for seismic data processing, namely seismic ground roll attenuation, as well as a method for 4D traveltime inversion. Ground roll, also known as Rayleigh waves, in land surveys as well as mud ... -
Methods for early-phase planning of offshore fields considering environmental performance
(Peer reviewed; Journal article, 2022)Extraction and processing of oil and gas with current technologies is energy- and carbon-intensive as well as are the manufacture, transport and installation of the facilities needed for oil and gas production. Nowadays, ... -
Methods of Pore Pressure Detection from Real-time Drilling Data
(Master thesis, 2012)The knowledge of formation pore pressure, and how it changes throughout the length of a well, is crucial in terms of maintaining control of the wellbore. Failure to recognize deviations from the expected pressures can lead ... -
Metodikk for driving og sikring gjennom svakhetssoner ved Rogfast
(Master thesis, 2013)Rogfast er planlagt bygget fra Randaberg til Vestre Bokn i Rogaland. Tunnelen vil med en lengde på omtrent 25km og 380 m dyp, bli verdens lengste og dypeste undersjøiske tunnel. I denne masteroppgaven gjøres en systematisk ... -
Micro-Oscillations in Seismic Signals - An Investigation Into Possible Multi-Bubble Origins
(Master thesis, 2018)Since its first use in the early 20th century, seismic acquisition has become the most utilised method of marine hydrocarbon exploration. At its core, the method relies upon pressure imbalances between a bubble of pressurised ... -
Micro-Testing While Drilling for Rate of Penetration Optimization
(Chapter, 2020)The Rate of Penetration (ROP) is one of the key parameters related to the efficiency of the drilling process. Within the confines of operational limits, the drilling parameters affecting the ROP should be optimized to drill ... -
Micro-Testing While Drilling for Rate of Penetration Optimization: Experiments and Simulations
(Peer reviewed; Journal article, 2021)The rate of penetration (ROP) is one of the key parameters related to the efficiency of the drilling process. Within the confines of operational limits, the drilling parameters affecting the ROP should be optimized to drill ... -
Microfluidics for Petroleum Reservoir Engineering Applications
(Master thesis, 2020)Polymer-coated silica nanoparticles (PSiNP) have been proposed for enhanced oil recovery (EOR) owing to their improved properties such as stability, emulsion formation, low retention, etc. over bare nanoparticles. Even ... -
Micromagnetic Modes of Anisotropy of Magnetic Susceptibility in Natural Magnetite Particles
(Peer reviewed; Journal article, 2022)Anisotropy of magnetic susceptibility (AMS) is commonly used to assess sedimentation, deformation, tectonics, rock fabric, and texture. Using focused-ion beam nanotomography, we develop a micromagnetic method to investigate ... -
Microscale Magnetic Inversion of Remanent Magnetization Mineral Sources From the Black Hill Norite, South Australia
(Peer reviewed; Journal article, 2023)Inverse modeling of regional-scale aeromagnetic data is complicated due to the non-uniqueness principle and interference of anomalies, especially with increased source-sensor separation. This is why in situ data and ... -
Middle to late Holocene paleoproductivity reconstructionsfor the western Barents Sea: a model-data comparison
(Journal article; Peer reviewed, 2015)In this study we focus on late Holocene primary productivity (PP) variability in the western Barents Sea and its response to variable sea ice coverage by combining PP reconstructed from several sediment cores with ... -
Migration Study of the Uranus Prospect in the Barents Sea: Evaluation of Velocity Sensitivity, Wave Equation Migration and Acquisition Geometry
(Master thesis, 2012)Imaging of salt is a known geophysical challenge, since salt has complex geology, with varying lithology and complicated structures. Salt diapir can have steep dips and obtaining a correct velocity models are some of the ... -
Million node fracture: size matters?
(Peer reviewed; Journal article, 2021)Transmissivity of self-affine fractures was computed numerically as a function of the grid size. One-million-node fractures (1024 × 1024 nodes) with fractal dimensions of 2.2–2.6 were cut into successively smaller fractures ... -
Mineral characterization as a tool in the implementation of geometallurgy into industrial mineral mining
(Journal article; Peer reviewed, 2018)Industrial minerals play an important role in the Norwegian mining industry. The presented research focuses on defining marble deposit variability in order to evaluate parameters that can potentially be related to downstream ... -
Mineral Magnetic Characterization of High-Latitude Sediments From Lake Levinson-Lessing, Siberia
(Peer reviewed; Journal article, 2021)Levinson-Lessing Lake in northern Central Siberia is a sedimentary archive characterized by continuous, widely constant sedimentation at high rates (0.7 m ka−1 for >32 ka). This study provides the first evidence of the ... -
Mineralogical and textural characterization for increased iron oxide recovery. Exemplified on the Storforshei iron formation
(Doctoral theses at NTNU;2019:309, Doctoral thesis, 2019)Process mineralogy is increasingly becoming an important part of quality control in mining operations, and chemical assays are not sufficient for predicting metallurgical performance of complex ore deposits. Knowledge of ... -
Mineralogical assessment of rocks of hydropower tunnels subjected to swelling
(Master thesis, 2022)Vannkraft tunneler lokalisert i svakt og svellende bergmasse er utsatt for stabilitets problemer og kollaps. Samarbeidspartneren Statkraft ønsker å støtte videre forskning som skal identifisere og vurdere svellende mineraler ... -
Mineralogiens betydning for materialbalansen i ulike produktstrømmer ved prosessanlegget til Rana Gruber
(Master thesis, 2018)er enda ikke skrevet -
Mineralogiens betydning for materialbalansen i ulike produktstrømmer ved prosessanlegget til Rana Gruber
(Master thesis, 2019)Dette masterprosjektet ble gjennomført i samarbeid med Rana Gruber for å skaffe innsikt i mineralbalanser i oppredningsprosessen deres for hematitt. Som del av oppgaven ble det tegnet opp et forenklet flytskjema for ... -
Mineralogy and texture of the Storforshei iron formation, and their effect on grindability
(Journal article; Peer reviewed, 2018)Investigating how ore mineralogy and texture affect the recovery from the processing plant is important for any mining operation. The results will assist in production planning and optimising the utilisation of a deposit. ...