Blar i Institutt for geovitenskap og petroleum på emneord "VDP::Technology: 500::Rock and petroleum disciplines: 510::Petroleum engineering: 512"
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Joint Optimization of Well Placement and Controls for Petroleum Field Development
(Doctoral thesis at NTNU;2014:369, Doctoral thesis, 2014)In this thesis we optimize the drilling location and operational controls of wells in a joint manner to improve the overall development strategy for a petroleum field. In particular, in this thesis we treat the integrated ... -
Machine learning procedures for automatic well planning in reservoir simulation models
(Doctoral theses at NTNU;2021:404, Doctoral thesis, 2021)Simulation of reservoir models is a tool to optimize the development of an oil and gas reservoir. Part of the development is placement of wells in the reservoir, and this well placement optimization process is performed ... -
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 ... -
Modeling and characterizing acoustic signals from cavity clouds generated by marine seismic air-gun arrays: Implications for marine mammals
(Doctoral theses at NTNU;2018:239, Doctoral thesis, 2018)Marine seismic air-gun arrays generate not only low-frequency (<∼300 Hz) acoustic waves which benefit seismic imaging, but also high-frequencies up to tens of kilohertz. Although such high-frequencies are much weaker than ... -
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 ... -
Regional Tectonic and Environmental Assessments of the Norwegian Polar Regions using Potential Field Methods
(Doctoral theses at NTNU;2021:421, Doctoral thesis, 2021)Interest for the polar regions has increased during the last few decades. New technologies now allow to conduct research in this hostile environment. Tectonic history and timing of the opening of the Arctic is the key to ... -
Reservoir modeling of water production in two unconventional resources - North American Tight Gas and South American Heavy Oil
(Doctoral theses at NTNU;2017:141, Doctoral thesis, 2007)This dissertation investigates methodologies for reservoir simulation and model tuning of wells producing water with hydrocarbon in two particular and extreme reservoir environments: cases of extremely small and very large ... -
Seismic data processing in orthorhombic anisotropic media
(Doctoral theses at NTNU;2018:243, Doctoral thesis, 2018)Describing the directional dependence of the wave velocity, seismic anisotropy has dramatically been gaining attention from both academic and industry, thanks to advances in the wider offset and azimuthal coverage of 3D ... -
Source-Depth Diversity for Enhanced Marine Seismic Imaging
(Doctoral theses at NTNU;2016:319, Doctoral thesis, 2016) -
Statistical Analysis of MWD Aata in a Geometallurgical Perspective: A case study on an industrial mineral deposit
(Doctoral theses at NTNU;2019:191, Doctoral thesis, 2019) -
System Design for the Next Generation Subsea IMR Vehicles
(Doctoral theses at NTNU;2018:196, Doctoral thesis, 2018)This thesis is about how to unlock the full potential of unmanned underwater vehicles to save cost and increase quality in inspection maintenance and repair (IMR) services for subsea petroleum extraction equipment. Today ... -
Three Dimensional Elastic Full Waveform Inversion
(Doctoral thesis at NTNU;2015:212, Doctoral thesis, 2015)The full waveform inversion (FWI) method is a technique for estimating subsurface elastic parameters using inverse theory. FWI is formulated as an optimization problem that seeks to minimize the dissimilarities between ... -
Topics on Integrated Asset Modelling, Production Systems Boosting and Virtual Metering
(Doctoral thesis at NTNU;2015:293, Doctoral thesis, 2015)This thesis addresses four existing gaps and missing facilities in the route to improve the capabilities to model an entire oil and gas field extending from the reservoir to the field sales point. Such a model, referred ... -
Transmission Wave- Equation Envelope Tomography Towards automated seismic travel-time waveform inversion
(Doctoral theses at NTNU;2016:270, Doctoral thesis, 2016) -
Transmission-Propagation Operator Theory and Tip-Wave Superposition Method for sub-salt shadow wavefield description
(Doctoral thesis at NTNU;2015:266, Doctoral thesis, 2015)TPOT&TWSM. Synthetic wave modeling in media with interfaces of complex geometrical shape is one of the main problems in the mathematical wave theory and its applications. Oil companies are concerned with increasing the ... -
Two-Phase Slug Flow Experiments with Viscous Liquids
(Doctoral thesis at NTNU;2016:109, Doctoral thesis, 2016)The challenges behind the multiphase transport of oil and gas mixtures are increasing as the oil and gas industry is moving towards production from non-conventional reservoirs and in remote locations. Transport of high ... -
Ultrasonic Studies of Stressed Sand and Clay: Roles of Lithology, Anisotropy and Saturating Fluid
(Doctoral thesis at NTNU;2015:208, Doctoral thesis, 2015)The main objective of the work presented in this thesis is to improve our understanding of elastic wave velocities in uncemented sediments, such as sand, clay and mixtures of sand and clay. The focus here has been on ... -
Unlocking the Potential of Hydrophilic Nanoparticles as Novel Enhanced Oil Recovery Method: An Experimental Investigation
(Doctoral thesis at NTNU;2015:202, Doctoral thesis, 2015)available inorganic nanoparticle candidates that are long time stable at a high temperature and in a high-salinity water/oil environment, easily prepared in a large-scale production with a relatively low cost, and ... -
Well test analysis, application to thermal recovery processes for reservoir characterization
(Doctoral thesis at NTNU;2015:41, Doctoral thesis, 2015)Thermal recovery by steam injection is considered to be a promising method for achieving a high ultimate recovery. A composite reservoir may occur during any enhanced oil recovery (EOR) project like steam injection into ...