Institutt for geovitenskap og petroleum
Recent Submissions
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Numerical simulation of pore pressure in rock joints during pressure transient in an unlined hydropower tunnel
(Chapter, 2020)Recent experimental result shows that pressure transients of both short and long time periods; i.e. water hammer and mass oscillation; can travel into the rock mass of an unlined hydropower tunnel through rock joints. It ... -
Cyclic oedometer swelling tests on rocks from North-Central Luzon, Philippines
(Chapter, 2020)Tunnels passing through swelling rocks are subjected to stability problems as moisture changes affect the material properties of the rocks. The drying out process during construction may cause local contraction stresses ... -
Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard
(Peer reviewed; Journal article, 2020)The study describes the depositional development and sediment partitioning in a prograding paralic Triassic succession. The deposits are associated with the advance of large prism‐scale clinoforms across a shallower platform ... -
Forearc crustal structure and controlling factors on basin formation across the southernmost Northern Andes
(Doctoral theses at NTNU;2021:11, Doctoral thesis, 2021)The southernmost region of the Northern Andes was subject to the collision and accretion of the Caribbean Large Igneous Province (CLIP) during Late Cretaceous. A process that led to the entrapment of an oceanic crustal ... -
Processing of S-Wave Data in Orthorhombic Media
(Doctoral theses at NTNU;2020:296, Doctoral thesis, 2020) -
Subsurface structure and hydrothermal fluid circulation at the Mohns mid-ocean ridge: a multi-geophysical investigation
(Doctoral theses at NTNU;2020:283, Doctoral thesis, 2020)Despite the small size of submarine hydrothermal vents exposed on seafloor, the extent and geological significance of hydrothermal systems span over distance of kilometers both laterally and in depth. However, due to ... -
Drilling in Karstified Carbonates: Early Risk Detection Technique
(Peer reviewed; Journal article, 2020)Heterogeneous nature and complex rock properties of carbonate reservoirs makes the drilling process challenging. One of these challenges is uncontrolled mud loss. Caves or a system of cavities could be a high-risk zone for ... -
Integrating rock physics laboratory data and modelling to improve uplift characterization methodology
(Peer reviewed; Journal article, 2020)Modelling changes in elastic wave velocities in sediments and rocks as they undergo burial and uplift can reveal aspects of their burial history. This has implications in the petroleum risking procedures, as aspects such ... -
Towards Bayesian Quantification of Permeability in Micro-scale Porous Structures – The Database of Micro Networks
(Journal article, 2020)This article develops a Bayesian framework to quantify the absolute permeability of water in a porous structure from the geometry and clustering parameters of its underlying pore-throat network. These parameters include ... -
Different aspects of detecting karst with geophysical methods - Tales from the underworld
(Doctoral theses at NTNU;2020:406, Doctoral thesis, 2020)The work in this thesis integrate conventional seismic interpretation, gravity survey data, field data from analogues and state-of-the-art numerical modeling in order to broaden and increase the understanding of the ... -
Modelling and Experimental Study on the Production of Gas Wells with Associated Liquid
(Doctoral theses at NTNU;2020:340, Doctoral thesis, 2020)Once a gas field is developed liquid production may start and persists sometime during the production life of most dry gas wells. This liquid could be condensate, water, or both, resulting from condensate dropout due to ... -
Facilitating microplastic quantification through the introduction of a cellulose dissolution step prior to oxidation: Proof-of-concept and demonstration using diverse samples from the Inner Oslofjord, Norway
(Peer reviewed; Journal article, 2020)Identifying and quantifying microplastic in marine samples can be facilitated by removing natural organic matter (NOM). Cellulosic material, like chitin, however, are a type of NOM that is resistant to chemical digestion, ... -
From Caledonian collapse to North Sea Rift: The extended history of a metamorphic core complex
(Peer reviewed; Journal article, 2020)Extensional systems evolve through different stages due to changes in the rheological state of the lithosphere. It is crucial to distinguish ductile structures formed before and during rifting, as both cases have important ... -
The Sveconorwegian orogeny – reamalgamation of the fragmented southwestern margin of Fennoscandia
(Peer reviewed; Journal article, 2020)The Sveconorwegian orogeny encompasses magmatic, metamorphic and deformational events between ca. 1140 and 920 Ma at the southwestern margin of Fennoscandia. In recent years, the tectonic setting of this nearly 200 Myr-long ... -
Next Generation Subsea Inspection, Maintenance and Repair Operations
(Peer reviewed; Journal article, 2016)This paper presents the latest developments in the project Next Generation Subsea Inspection, Maintenance and Repair (IMR). Subsea IMR operations are frequently carried out in the offshore oil and gas business. Increased ... -
Assessment on the swelling and disintegration potential of weak and weathered rocks in water tunnels of hydropower projects - a contribution based on use of laboratory testing methods
(Doctoral theses at NTNU;2020:354, Doctoral thesis, 2020)Swelling of rocks is a time-dependent phenomenon and a result of multiple and interactive rock characteristics interplaying in a complex picture. Further, the swelling responses of the rock mass are conditioned on the ... -
Framework for automated well planning and Digital Well Management
(Doctoral theses at NTNU;2020:357, Doctoral thesis, 2020)This research was initiated to establish mitigations of the performance gap in well construction. Expert representatives from each discipline spend on average 4,000 to 6,000 manhours of planning for each offshore well, ... -
Observations on and use of curves of current dimensionless potential versus recovery factor calculated from models of hydrocarbon production systems in Journal of Petroleum Science and Engineering
(Peer reviewed; Journal article, 2021)In this work, curves of current dimensionless potential versus recovery factor are computed with models of hydrocarbon production systems. Additionally, a method to estimate production profiles using curves of current ... -
Performance of Unbound Pavement Materials in Changing Moisture Conditions
(Chapter, 2020)Expected climate changes will in many areas represent a shift towards increased precipitation and more intense rainfall events. This may lead to increased moisture within road structures and possible overloading of road ... -
Optimal utilisation of unbound crushed aggregates for road construction
(Doctoral thesis, 2020)Aggregates are construction materials produced from non-renewable rock resources. Because high-quality aggregate resources have limited availability, utilisation of aggregates should be considered carefully to prevent ...
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