Browsing Master's theses (TN-IPT 2007-2017) by Issue Date
Now showing items 61-80 of 533
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Multiphase-flow correlations' ability to model vertical lift performance
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)The Statfjord Field has entered a drainage strategy where the reservoir will be depleted such that gas liberates from the remaining oil in the reservoirs. Adequate modelling of vertical lift performance is needed to predict ... -
Evaluation of hydro acoustic condition monitoring of subsea processing equipment
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)The project described in this thesis is based on the perceived fact that a need for advancements in monitoring technology results from the development of more complex subsea equipment. An existing type of hydro acoustic ... -
An analysis of drilling operation efficiency
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Seadrill’s constant strive to achieve their goal in setting the standard in drilling pursues the focus on operations excellence. The company’s fleet is expanding with frequent new Mobile Offshore Drilling Units (MODU) ... -
Alternative production scenarios of the Gyda field
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)The Gyda field has been on stream since June 1990. Water injection commenced Feb. 1991. Currently Gyda is suffering from high water cuts. Having in mind that water injection is very costly, environmentally pollutant and ... -
A study of pressure decay in a closed CO2-water system
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Analytical and semi-analytical solutions to the diffusion equation have been obtained in an effort to model pressure decay in a closed CO2-water system. Various boundary conditions that include different physical effects ... -
EOR in chalk: Optimized oil recovery with modified seawater
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)The effect of using seawater or modified seawater as a wettability modifier in chalk has been previously investigated at higher temperatures. This work has shown that “smart water” improves the oil recovery due to ... -
Torque & drag analyses of North Sea Wells using new 3D model.
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Excessive drill string torque and drag is one of the major limitations of extended-reach and horizontal drilling. The torque and drag models are used in the planning phase and during the drilling of a well, as a tool used ... -
Mechanistic study of CO2 flooding of asphaltenic oil reservoir
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Carbon dioxide (CO2) injection is one of the most common enhanced oil recovery (EOR) techniques to increase the oil production. CO2 is injected into the reservoir to displace the residual oil left and mobilize the oil to ... -
CO2-foaming agent retention in fractured chalk models: Experiments and simulations
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Injection of CO2-gas can improve the oil recovery. In naturally fractured reservoirs such as chalk, injection of CO2-gas can result in early gas breakthrough because the gas can use the fractures as pathways from the ... -
Laboratory evaluation of sodium silicate for zonal isolation
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)A common problem for maturing oil fields is excessive water production. Ultimate oil recovery could be increased considerably by implementing an appropriate water production management. Solutions for managing excess water ... -
Numerical simulation of chemical flow-zone isolation
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Silicate gel has been mostly used for near well treatment. A field test in the Snorre reservoir on the Norwegian Continental Shelf (NCS) has been planned, where the object of the test is to technically qualify silicate gel ... -
Effect of IFT on gravity segregation in mixed wet reservoir
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)The effects of water-oil interfacial tension (IFT) on gravity segregation and its implication on oil recovery have been investigated by numerical simulations and steady state upscaling. Eclipse surfactant model was used ... -
New methodology for foam cement mixing to better reflect onsite mixing method
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Foamed cement has become a well established cementing method for many applications in oilwell cementing all over the world. A key factor to a successful foam cement job is an optimized cement slurry design. To achieve ... -
The tectono-stratigraphic evolution of the greater Mandal High area, Southern North Sea, Norway
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)A 3D seismic cube combined with well data from ten exploration wells are used to form a model of the tectono-stratigraphic evolution of the Greater Mandal High Area, Southern North Sea, Norway. The data defines the ... -
Final field permanent plug and abandonment - methodology development, time and cost estimation, risk evaluation
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Quote from Douglas C. Nester, COO Prime Offshore LLC: “P&A obligation is like death; you can try to delay it for as long as possible, but sooner or later it will occur.”[1] Many wells on the NCS (Norwegian Continental ... -
Water and surfactant flooding at different wettability conditions
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)In a surfactant flooding of oil reservoirs, surfactant products are added to the injected water to reduce the oil-water interfacial tension (IFT) and thereby mobilize capillary trapped oil. The theory in classic surfactant ... -
Core-scale simulation of polymer flow through porous media
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)From a multitude of laboratory studies conducted by various researchers during roughly the last 40 years (e.g. Hirasaki and Pope 1974, Heemskerk et al. 1984, Stavland et al. 2010), it has been identified that the behavior ... -
Adsorption of quinoline onto illite at high temperature in relation to low salinity water flooding in sandstone reservoirs
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Laboratory tests, as well as field tests, have shown that low salinity water flooding in sandstone reservoirs can improve the water wetness of the rock and thereby increase the oil recovery. Many mechanisms have been ... -
Analysis of borehole failure related to bedding plane
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Borehole instabilities during drilling are more common in shale formations than in most other rock formations. Shale make up more than 80% of sediments and rocks in siliciclastic environments and about three quarters of ... -
A mechanical study of the effect of sulphate
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)In this study the presence of sulphate in seawater was examined from a mechanical point of view. As test material an outcrop chalk from the Hallembaye area in Belgium called Liegé was used. This is a high porosity outcrop ...