Blar i Department of Energy and Petroleum Engineering (TN-IEP) på tittel
Viser treff 554-573 av 575
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Using ceramic discs to evaluate fluid loss and formation damage
(Bachelor thesis, 2021)To prevent kicks and possible blowout of the well, the pressure from the drilling fluid must be kept above the pore pressure of the formation. This differential pressure forces the fluid into the porous formation, which ... -
Utvikling av ny tetthets - hastighet og kompresjon - skjærbølgehastighetsmodell basert på NCS-feltdata: Empirisk og kunstig neuronettverksbasert
(Bachelor thesis, 2021)Denne oppgaven presenterer utviklingen av nye tetthet- og hastighets- regresjonsmodeller (enkel- og multivariate-baserte) og artificial neural network (ANN) basert modellering ved bruk av data hentet fra Barentshavet, ... -
Utvikling av ny tetthets - hastighet og kompresjon - skjærbølgehastighetsmodell basert på NCS-feltdata: Empirisk og kunstig neuronettverksbasert
(Bachelor thesis, 2021)Denne oppgaven presenterer utviklingen av nye tetthet- og hastighets- regresjonsmodeller (enkel- og multivariate-baserte) og artificial neural network (ANN) basert modellering ved bruk av data hentet fra Barentshavet, ... -
Validation study of water weakening research from outcrop chalks performed on Eldfisk reservoir cores
(Peer reviewed; Journal article, 2020-11)Seawater injection for Enhanced Oil Recovery (EOR) purposes can increase the hydrocarbon recovery factor in carbonate reservoirs but are also responsible for weakening their mechanical strength. This study investigates the ... -
Validation study of water weakening research from outcrop chalks performed on Eldfisk reservoir cores
(Peer reviewed; Journal article, 2020-03)Seawater injection for Enhanced Oil Recovery (EOR) purposes can increase the hydrocarbon recovery factor in carbonate reservoirs but are also responsible for weakening their mechanical strength. This study investigates the ... -
Value of Digitizing Well Interventions and its impact on business and working processes
(Master thesis, 2021)The oil and gas industry continuously enters a phase with new challenges and new ways of thinking, the rise of a digitalization revolution can be the key answer to creating new opportunities to overcome the industry's ... -
Value of Information Analysis in CO2 Sequestration Projects
(Master thesis, 2021)As one of the main risks related to CO2 storage is leakage, it is important to consider the impact of the reservoir uncertainties on the long-term CO2 migration and leakage which affecting the decisions in CO2 storage ... -
Valuing abandonment decisions: Maximizing an oil and gas fields Net Present Value
(Master thesis, 2021)The oil and gas sector in the North Sea is mature and consists primarily of brownfields that have passed their peak production or are close to the end of their lives. Many of these fields will have to be abandoned in the ... -
Vibration-assisted annular fluid displacement for rig-less well abandonment operations
(Peer reviewed; Journal article, 2022-06)Through-tubing abandonment is the operation where the production tubing is cut or punched and cemented inside the production casing. This can establish a full cross-sectional barrier or isolation in wells where the cement ... -
Viscosity Models for Drilling Fluids: Herschel-Bulkley Parameters and Their Use
(Peer reviewed; Journal article, 2020-10)An evaluation is presented of the practical usage of the Herschel-Bulkley viscosity model for drilling fluids. If data from automatic viscosity measurements exist, the parameters should be selected from relevant shear rate ... -
Wall Temperature Analyses of Sandwiches Sections Using Infrared Thermography to Evaluate Micro-Annuli size
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-07-15)This study mainly focuses on the detection and characterization of micro-annuli at the interface of cement and casing, usually caused by changes in pressure, temperature, or volume change of zonal isolation material. For ... -
Water flooding of Eldfisk reservoir cores
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)Enhanced Oil Recovery (EOR) and the effect of the aqueous chemistry on the mechanical strength of chalk have been extensively studied over the years. This is simply because the stability of the reservoir system is affected ... -
Water Injection in Wisting - importance of barrier management
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-07)A preselected Wisting well injector design has been used as a basis for this study. Because of the challenges following an ultra shallow reservoir and an almost negligible stress contrast between the reservoir and cap rock, ... -
Well Barrier Restoration Across Dual Cemented Liners
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06)In the past years there has been an increased focus on decommissioning of wells in the NCS. Decommissioning of wells introduces significant investments with no financial returns and has for those reasons historically had ... -
Well Design With an Environmental Focus
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-08)The decisions made during well planning have mainly been focused on safety, cost efficiency and applicability of the design. As the climate have been getting more attention the past years, environment is now high up on the ... -
Well Modelling of H2S Production on a Field in the North Sea
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06)Hydrogen sulphide production can prove to be a very costly affair for exploration and production companies. Failure to implement efficient H2S control and mediation strategies can lead to a decrease in production assets, ... -
Wellbore Collapse Failure Criteria and Drilling Optimization
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-15)Design and planning in drilling a well are a key for successful before to execute drilling operation. A good understanding of wellbore stability, design mud, casing, cementing, BHA & drillstring, drilling bit, hole cleaning ... -
Wellbore stability analysis for an extended-reach well on Ekofisk
(Master thesis, 2022)The drilling of extended-reach wells is an increasingly common practice to reduce costs in exploration and development of mature fields. Extended-reach wells are technically challenge, as high inclination trajectories may ... -
Wet Drilled Cuttings Bed Rheology
(Peer reviewed; Journal article, 2021)The cuttings transport efficiency of various drilling fluids has been studied in several approaches. This is an important aspect, since hole cleaning is often a bottleneck in well construction. The studies so far have ... -
Wet-granular rheology to measure cuttings-bed strength
(Peer reviewed; Journal article, 2021)Drilled cuttings-bed formation is a natural process during wellbore drilling operations, although it is not desired. To optimally remove the drilled cuttings out of the wellbore it is important to break the formed beds. ...