Blar i Institutt for geovitenskap og petroleum på emneord "VDP::Technology: 500::Rock and petroleum disciplines: 510::Petroleum engineering: 512"
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A Laboratory Approach to Investigating Wellbore Instability in Shale during Drilling
(Doctoral thesis at NTNU;2015:233, Doctoral thesis, 2015)Abstract: Over the past few years, laboratory efforts have been increasingly directed towards developing methods to understand more of the wellbore dynamics during drilling, particularly in weak shale. Hollow cylinder ... -
An Experimental Investigation and Process Modeling of Multiphase Flow Through Multiple Restrictions
(Doctoral thesis at NTNU;2015:277, Doctoral thesis, 2015)A methodology for simultaneous estimation of multiphase flow rate and stream composition has been developed to be applied in a multiple restriction assembly composed of two orifice meters and a cage trim valve. These ... -
An Experimental Investigation of Enhanced Oil Recovery Mechanisms in Nanofluid Injection Process
(Doctoral thesis at NTNU;2016:37, Doctoral thesis, 2016)Nanotechnology is recently proposed to increase oil recovery in some literature. Nanoparticles, as part of nanotechnology, are chosen as novel enhanced oil recovery (EOR) agent. Compared with other chemical EOR agents, ... -
Analysis of modelled satellite magnetic data to explore lithospheric magnetization
(Doctoral theses at NTNU;2017:304, Doctoral thesis, 2017)The increasing availability of magnetic satellite measurements in addition to aeromagnetic data, requires new tools and concepts for interpretation and modelling. Realistic forward modelling requires a precise definition ... -
Analysis of Stick-Slip Effects During Oil-Well Drilling
(Doctoral theses at NTNU;2017:127, Doctoral thesis, 2017)The drilling operation is a costly portion of the upstream petroleum industry. It is worth making efforts to reduce unwanted non-productive time (NPT), which is often induced by downhole problems during drilling. In this ... -
Assessment of Undiscovered Mineral Resource Potential at the Northern Mid-Atlantic Ridge (MAR) and on the Norwegian Mainland: Method development and applications
(Doctoral theses at NTNU;2019:137, Doctoral thesis, 2019)Marine mineral resources, such as seafloor massive sulfides (SMS), may address future needs in raw materials for nations aiming to sustain industrial and economic development. Past exploration of these seabed resources, ... -
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 ... -
Cement Plug Integrity for Well Abandonment
(Doctoral theses at NTNU;2020:30, Doctoral thesis, 2020)Permanent abandonment marks the end of the life of an oil or gas well. Accordingly, the penetrated formation must be isolated, preventing fluid flow to the surface or surrounding formation, with a purpose to give long-term ... -
Cement Sheath Integrity During Thermal Cycling
(Doctoral thesis at NTNU;2015:291, Doctoral thesis, 2015)In the construction process of oil and gas wells, primary cementing constitutes a critical procedure of placing a cement sheath in the annulus between casing and formation, or between the casing strings. The main purpose ... -
CO2 fluid flow information from quantitative time-lapse seismic analysis: Illustrated using seismic data from Sleipner, North Sea, Norway
(Doctoral thesis at NTNU;2015:308, Doctoral thesis, 2015) -
Data-driven Borehole Imaging and Monitoring
(Doctoral theses at NTNU;2017:329, Doctoral thesis, 2017) -
Development and Assessment of a Multi-Pipe Oil-Water Bulk Separator Concept for Subsea Applications
(Doctoral theses at NTNU;2019:306, Doctoral thesis, 2019)Subsea produced water separation has emerged as a viable technology for tackling challenges arising from increased water production rates. Removing produced water at the seabed will free up topside capacity constrained ... -
Engineering Geological Considerations for the Planning of TBM Tunnels in Norway
(Doctoral theses at NTNU;2017:169, Doctoral thesis, 2017)The use of tunnel boring machines (TBMs) was extensive in Norway during the larger scale hydropower development between the 1970s and the 1990s, and clients, contractors and research institutions contributed to the ... -
Enhanced oil recovery using silica nanoparticles: An experimental evaluation of oil production, recovery mechanisms and nanofluid stability
(Doctoral theses at NTNU;2017:328, Doctoral thesis, 2017) -
Experimental and Numerical Study of Density-Driven Natural Convection Mechanism During Storage of CO2 in Brine Aquifers
(Doctoral thesis at NTNU;2015:170, Doctoral thesis, 2015)Storage of CO2 into geological formations is a reasonable technical choice for decreasing carbon dioxide emissions to the atmosphere. Brine aquifers are considered as one of the most favorable options for this purpose ... -
Fluid Heterogeneity in Tight Unconventional Reservoirs
(Doctoral theses at NTNU;2020:270, Doctoral thesis, 2020)This thesis deals primarily with layer-wise fluid heterogeneity in tight unconventional reservoirs. The industry has almost exclusively assumed that the fluid system within a well-box, i.e. contributing production to a ... -
Frequency dependent elastic properties of shales – Impact of partial saturation and stress changes
(Doctoral theses at NTNU;2017:151, Doctoral thesis, 2017)Shales are the most common constituent of the overburden of conventional hydrocarbon reservoirs. As such, they have a strong influence on seismic waves and knowledge about overburden mechanical properties is required for ... -
Geophysical Monitoring of CO2 Injection in Saline Aquifers
(Doctoral thesis at NTNU;2014:267, Doctoral thesis, 2014)Carbon capture and storage (CCS) is a prerequisite to meet the internationally agreed upon target of limiting the emissions of CO2. The international energy agency has a goal that CCS should cover 14% of the CO2 emission ... -
Holistic flow and pressure control for underbalanced drilling operations
(Doctoral theses at NTNU;2016:333, Doctoral thesis, 2016)This text is targeted towards engineers and researchers working with drilling automation. Though the selected application domain is underbalanced drilling (UBD) the results are applicable to managed pressure drilling ... -
Implications of Gas Hydrates in Drilling and Completion A Scientific Root Cause Analysis of the Deepwater Horizon Disaster
(Doctoral theses at NTNU;2020:119, Doctoral thesis, 2020)On April 20, 2010 eleven men lost their lives in the explosion and fire on Deepwater Horizon. Previous investigations have assumed that the experienced drilling crew must have missed a cumulative gain of about 1 000 barrels ...