Institutt for geovitenskap og petroleum
Recent Submissions
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Classification and quantification of minor iron-sulfide concentrations in concrete aggregate using automated mineralogy
(Peer reviewed; Journal article, 2025)Iron sulfide concentrations and mineral associations triggering the internal deterioration of concrete structures are still enigmatic. Incidences of internal sulfate attacks induced by iron sulfide-containing concrete ... -
A Comparative Study of UCS Results Obtained from Triaxial Tests Under Multiple Failure State Conditions (Test Type II)
(Journal article; Peer reviewed, 2025)In any rock engineering project, the uniaxial compressive strength (UCS) is one of the most relevant parameters to be determined as it is used for a variety of purposes. Traditionally, the UCS of a rock sample is obtained ... -
Effect of drill string lateral vibrations on wellbore stability and optimal mud pressure determination
(Journal article; Peer reviewed, 2025)Wellbore instability is a critical issue in drilling operations, contributing to significant non-productive time and costly delays. While previous studies have focused on physicochemical and mechanical causes of wellbore ... -
Advancing Responsible Mining: Machine Learning and MWD Data for Blast Optimization in Quarry Operations
(Doctoral theses at NTNU;2025:111, Doctoral thesis, 2025)The PhD project aims to bring substantial advancements to blasting operations in the studied quarries through the application of data analysis and machine learning techniques. This approach will provide significant ... -
Trapdoor Viscous Remanent Magnetization
(Journal article; Peer reviewed, 2024)Viscous remanent magnetization (VRM) in multidomain (MD) particles has many puzzling properties that deviate from the current VRM theory, based on Néel's single-domain model of magnetic particles with an almost symmetric ... -
Investigating the effect of hole size, bottom hole temperature, and composition on cement bonding quality of exploratory wells in Iran
(Journal article; Peer reviewed, 2024)The oil and gas industry’s reliance on well cementing practices to ensure well integrity and productivity is a pressing concern, particularly in exploratory wells where unpredictable conditions can lead to subpar cement ... -
Impact of the Ceria Particle Oxidation State on the Collecting Properties of Sophorolipids and Benzohydroxamic Acid
(Journal article; Peer reviewed, 2024)The search for environmentally friendly alternatives to petroleum-based reagents in mineral processing requires fundamental studies of novel chemicals in model mineral systems. In this study, we evaluate the potential of ... -
Mitigating gas migration with eutectic bismuth alloy plugs
(Journal article; Peer reviewed, 2024)Gas migration is an important concern to address in oil wells, especially in those that are to be abandoned. Stopping a gas leakage is not a simple task, and this can be particularly detrimental when setting a cement plug, ... -
Integration of Rock Physics and Geomechanics to Improve 4D Overburden Monitoring
(Doctoral theses at NTNU;2025:66, Doctoral thesis, 2025)This PhD thesis focuses on integrating rock physics and geomechanics to improve the interpretation of 4D seismic data for monitoring stress and pore pressure changes in the overburden above depleting hydrocarbon reservoirs. ... -
Methods to Design and Manage Energy-Efficient Offshore Hydrocarbon Production Systems
(Doctoral theses at NTNU;2025:83, Doctoral thesis, 2025)The world is facing the urgent challenge of climate change, and Norway is committed to reducing CO2 emissions while maintaining oil and gas production levels. The LowEmission project, which this thesis is a part of, has ... -
Crustal Heterogeneity Onshore Central Spitsbergen: Insights From New Gravity and Vintage Geophysical Data
(Peer reviewed; Journal article, 2025)Gravity data provide constraints on lateral subsurface density variations and thus provide crucial insights into the geological evolution of the region. Previously, gravity data from the Norwegian Arctic archipelago of ... -
Pore-scale Investigations of Fluid Flow and Interfacial Mass Transfer
(Doctoral theses at NTNU;2024:510, Doctoral thesis, 2025)In this thesis, we investigated fluid flow in porous media from a pore-scale perspective and derived continuum-scale properties. This study conducts statistical analysis of single-phase flow and implements experimental and ... -
Color-gradient-based phase-field equation for multiphase flow
(Peer reviewed; Journal article, 2024)In this paper, the underlying problem with the color-gradient (CG) method in handling density-contrast fluids is explored. It is shown that the CG method is not fluid invariant. Based on nondimensionalizing the CG method, ... -
3D Numerical Modeling of Rock Mass Failure in an Uplift Test of a Rock Anchor with Focus on the Role of Rock Joints
(Journal article; Peer reviewed, 2025)This paper aims to numerically study the failure mechanisms of the rock mass during the uplift test of a rock anchor installed in limestone. The rock anchor consisted of a smooth tendon, with short threaded sections at ... -
Performance Evaluation and Optimization of the REFLUX Flotation Cell (RFC) in Processing Kupferschiefer-type Copper Ore
(Doctoral theses at NTNU;2024:499, Doctoral thesis, 2024)The demand for metals continues to surge, necessitating advancements in mineral processing technologies to increase production capacity and efficiency. Flotation, a predominant method for separating valuable minerals from ... -
CO2 Monitoring Design using Value-of-Information Analysis with Applications to the Sleipner Project
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Permanent tunnel support with reinforced shotcrete arches and forepoling in over-consolidated till and weathered rock. A case study based on the construction of the Bergås tunnel, Norway
(Journal article; Peer reviewed, 2025)Ground support in tunnels excavated through weak ground conditions in Norway has normally consisted of reinforced shotcrete methods. However, in cases where exceptionally poor ground or soil tunnel conditions were expected, ... -
Spatial Sediment Erosion and Yield using RUSLE coupled with distributed SDR model
(Journal article; Peer reviewed, 2024)Estimating sediment yield in a river is a challenging task in water resources field. Different methods are available for estimating sediment erosion and yield, but generally they are not spatially distributed in nature. ... -
The Almenningar landslides, northwestern Iceland - detailed characterization of fine-grained material and landslide properties
(Master thesis, 2024)I Almenningar-området nord på Tröllskagihalvøya på Nord-Island går det tre saktegående jordskred. Over skredene går det en viktig vei som forbinder Siglufjörður med resten av Island. Bevegelsene under veien fører til store ... -
Bismuth Metal Alloys: A Possible Future for Well Plugging and Abandonment
(Doctoral theses at NTNU;2024:480, Doctoral thesis, 2024)ALL things must come to an end, and so does the life cycle of a well. Permanent abandonment involves sealing the penetrated formation, or reservoir, to prevent hydrocarbons from migrating to the surface or into surrounding ...
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