Blar i Institutt for geovitenskap og petroleum på dokumenttype "Doctoral thesis"
Viser treff 121-140 av 223
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Nano-Enabled Cement System for Well Cementing
(Doctoral theses at NTNU;2017:213, Doctoral thesis, 2017)The main goal of primary cementing is to provide zonal isolation in oil and gas wells. In general, the failure of the cement sheath to maintain long-term zonal isolation is due to: Low tensile properties ... -
Non-linear Bayesian inversion of seismic reflection amplitudes
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:146, Doctoral thesis, 2009)Seismic amplitudes can be used to assess subsurface information beyond a structural image through an amplitude-versus-angle (AVA) inversion. It is an application with challenging pre-processing and a difficult inversion ... -
Nonhyperbolic velocity analysis and improved demultiple for seismic data
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:300, Doctoral thesis, 2011)Reflection seismology is a widely used geophysical method to image and delimit underground oil and gas prospects using seismic data illumination from the surface. The collected information in acquisition contains reflected ... -
Nonlinear Elastic Waves for Estimation of Rock Properties
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:375, Doctoral thesis, 2013)Nonlinear elasticity is a well-known feature that reveals in many phenomena and at different scale, depending on the material. Many independent studies have shown that the nonlinear response of geomaterials differs ... -
Norwegian value creation beyond oil and gas: Strategic opportunities in sustainable Norwegian energy production to secure European energy supplies
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:210, Doctoral thesis, 2009) -
Novel reagent system in metal sulphide flotation
(Doctoral theses at NTNU;2020:214, Doctoral thesis, 2020) -
Numerical modelling of the longwall mining and the stress state in Svea Nord Coal Mine
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:349, Doctoral thesis, 2012)This thesis presents numerical and analytical investigation of the geomechanics underlying longwall mining. It was tried out to study the disturbances induced by longwall mining in nearby rocks and their influence on the ... -
Numerical Simulation of Fracture Geomechanics: Geothermal, CCS and Petroleum applications
(Doctoral theses at NTNU;2019:370, Doctoral thesis, 2019) -
Offshore Gravimetric and Subsidence Monitoring
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:183, Doctoral thesis, 2008) -
On Processing and Inversion of Marine Magnetotelluric Data
(Doctoral theses at NTNU;2017:311, Doctoral thesis, 2017) -
One-way wave-equation migration for wide-angle propagation in anisotropic media
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:140, Doctoral thesis, 2010)Seismic depth migration is a major component in the search for hydrocarbons. As new prospects for oil and gas often are found in areas with challenging subsurface structures, more advanced methods to find and evaluate these ... -
Onshore to offshore correlation of ore-forming hydrothermal systems: Geological investigations of the Reinfjord Ultramafic Complex and Southwestern Barents Sea
(Doctoral theses at NTNU;2023:76, Doctoral thesis, 2023)Demand for mineral resources continues to grow, while political pressure, legitimate environmental concerns, and important ethical questions slow the development of new mineral resources. Simultaneously, emerging technologies ... -
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 ... -
Optimization of ThermalProcesses in Heavy Oil Recovery
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:338, Doctoral thesis, 2013)The past few years has been marked by high oil prices, apparent inability of traditional oil supplies to meet world energy demands, and a move towards evaluating untraditional (higher-cost) energy resources such as heavy ... -
Particle scale reservoir mechanics
(Doktoravhandlinger ved NTNU, 1503-8181; 116, Doctoral thesis, 2002)When a petroleum reservoir is produced, the mechanical state of stress is changing, which leads to alteration of rock mechanical behaviour, of fluid flow, and of geophysical parameters. Numerical schemes have been developed ... -
Pavement wear and airborne dust pollution in Norway
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:133, Doctoral thesis, 2008)In several large cities in Norway the traffic volume is high. The use of studded tires and other friction enhancing measures during winter leads to significant pavement wear, which in turn leads to an increase in the amount ... -
Permian-Triassic Depositional Systems in the Norwegian Sea Areas
(Doctoral theses at NTNU;2020:195, Doctoral thesis, 2020)Upper Permian deposits from the eastern margin of the Helgeland Basin, offshore Norway, are known to contain two organic-carbon-rich (OCR) intervals within the Lower Turbidite Unit. These intervals were so far not proven ... -
Physical Effects Controlling Mass Transfer in Matrix Fracture System during CO2 Injection Into Chalk Fractured Reservoirs
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:72, Doctoral thesis, 2007)Tertiary recovery or Improved Oil Recovery (IOR) methods are key processes to replace or upgrade reserves, which can be economically recovered, beyond conventional methods. Therefore, the application of IOR methods offers ... -
Physics of Strain Burst in Hard Rock – Fracture characteristics and influences of the stiffness of the host rock mass
(Doctoral theses at NTNU;2022:242, Doctoral thesis, 2022)Rock burst is a phenomenon in which rock disintegrates, accompanied by the ejection of debris. Strain burst is a type of rock burst. It is directly associated with stress concentration after rock excavation. Overstressed ... -
Pore pressure estimation from single and repeated seismic data sets
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:31, Doctoral thesis, 2005)Høye poretrykk utgjør en risiko for boreoperasjoner på Norsk Sokkel og internasjonalt. Denne risikoen kan reduseres dersom man har kjennskap til poretrykksforholdene før boring. Poretrykk er også en viktig parameter for ...