Browsing Institutt for geovitenskap og petroleum by Subject "VDP::Teknologi: 500::Berg‑ og petroleumsfag: 510"
Now showing items 1-17 of 17
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Assessment on the Decisive Parameters for Open Pit Slopes – A contribution based on a mine in hard rock environment
(Doctoral theses at NTNU;2018:35, Doctoral thesis, 2018)Rock slope stability has been one of the major operational and safety challenges in the open pit mines throughout the world. Steeper slope angles provide a higher revenue and less waste material. Gentle slope angles are ... -
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 ... -
Experimental Studies of the Acoustic Signal generated by Marine Seismic Sources
(Doctoral theses at NTNU;2019:80, Doctoral thesis, 2019)Marine seismic acquisition is the most commonly used geophysical technique to image the subsurface for different purposes, e.g. exploration of reservoirs or investigation of subduction zones as areas where earthquakes are ... -
Forearc crustal structure and controlling factors on basin formation across the southernmost Northern Andes: Geophysical and Geological Investigations
(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 ... -
Geological parameters and shear strength of dry tills from the southern half of Norway in relation to bedrock geology
(Doctoral theses at NTNU;2018:204, Doctoral thesis, 2018)When excluding floods, it is primarily slope stability issues such as landslides and avalanches, which count for the main geohazards in Norway. Till is the dominant Quaternary sediment, where the till deposits mostly ... -
Geomechanics and Rock Physics of Anisotropic Overburden Shales
(Doctoral theses at NTNU;2023:326, Doctoral thesis, 2023)Shales, with their diverse composition and complex properties, present an interesting research subject and a challenging material to work with. As they constitute a significant portion of the overburden in most currently ... -
Geophysical Mapping and Paleomagnetic Study of the Leka Ophiolite Complex
(Doctoral theses at NTNU;2019:32, Doctoral thesis, 2019)This thesis presents the results of a geophysical study of the Leka Ophiolite Complex (LOC) in central Norway, carried out to refine the understanding of the LOC’s sub surface geometry, fault structure and structural ... -
HyGreGel: A new class of gel systems for water diversion by in-depth reservoir placement
(Doctoral theses at NTNU;2019:336, Doctoral thesis, 2019)High water production is typically a major problem late in the life cycle of a water flooded hydrocarbon reservoir. Reservoir heterogeneity plays a significant role in creating this problem. An example is highly permeable ... -
Pumping iron and manganese: Geochemistry and engineering of groundwater well systems with challenging redox conditions
(Doctoral theses at NTNU;2023:58, Doctoral thesis, 2023)Wells facilitate extraction and injection of groundwater, both for heating/cooling and drinking water purposes. Their ability to supply groundwater of sufficient quantity and quality may be impeded with time. To a large ... -
Real-Time Data-Driven Drilling Optimization
(Doctoral theses at NTNU;2021;348, Doctoral thesis, 2021)Drilling a well for exploration or production of petroleum resources is a costly and complicated procedure. There is a great potential for cost reduction by drilling safer, faster and with less Non-Productive Time (NPT). ... -
Reservoir Characterization and Determination of Residual Oil Saturation Using Single-Well- Chemical-Tracer Test - Significance of Geochemistry, Rock Dissolution, and Surface-Charge Alteration
(Doctoral theses at NTNU;2017:350, Doctoral thesis, 2017)It is generally recognized that the determination of residual oil saturation (Sor) plays a significant role in production forecasting and the selection and management of enhanced oil recovery (EOR) methods. Failure to ... -
Same-Well Enhanced Oil Recovery in Tight Unconventionals
(Doctoral theses at NTNU;2023:67, Doctoral thesis, 2023)This thesis presents a numerical modeling study of two gas-based, same-well, enhanced oil recovery (SWEOR) processes—huff-and-puff (HnP) and fracture-to-fracture (F2F)—applied to tight unconventionals. The processes consist ... -
Seismic Dispersion and the Relation between Static and Dynamic Stiffness of Shales
(Doctoral theses at NTNU;2018:182, Doctoral thesis, 2018)The main focus of this work is on the characterisation of the static and dynamic elastic properties of overburden shales by laboratory experiments; some of the studies were additionally conducted on sandstones. The work ... -
Study of Cuttings Transport Using Water-Based and Oil-Based Drilling Fluids
(Doctoral theses at NTNU;2018:108, Doctoral thesis, 2018)Cuttings transport is a topic of great interest in the oil and gas drilling industry. Insufficient cuttings transport leads to several expensive problems. Knowledge and selection of the drilling fluids is one of the important ... -
Tectonomagmatic Evolution of the Sveconorwegian Orogen: Insights from Geochemical and Isotopic Data
(Doctoral theses at NTNU;2022:123, Doctoral thesis, 2022)The Sveconorwegian orogen has a long, complex geological and tectonic history at the southwestern margin of the Fennoscandian Shield, which took place between 1140 and 920 Ma. For almost 150 million years of that time, ... -
The Influence of Drilling-Fluid Rheology on Cuttings-Bed Behavior
(Doctoral theses at NTNU;2018:2, Doctoral thesis, 2018)Transporting cuttings out of the wellbore is an important part of every drilling operation to ensure efficiency and the reduction of non-productive time. The drilling fluids used for this task are complex fluid systems, ... -
Understanding the impact of stress release on sandstone using sound waves: rock physics, applications and code
(Doctoral theses at NTNU;2024:100, Doctoral thesis, 2024)The acoustic and elastic responses of sandstones vary with changes in effective stress. Laboratory measurements have indicated that among different types of sandstones, velocities and elastic moduli of weakly cemented ...