Blar i NTNU Open på forfatter "Sangesland, Sigbjørn"
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Design, Implementation and Optimization of an Autonomous Miniature Rig for Directional Drilling
Helgeland, Henrik; Solberg, Mikaela; Alvarez, Luis (Master thesis, 2022)Digitale løsninger og automatiserte prosesser revolusjonerer mange sektorer, inkludert olje- og gassindustrien. Siden 2016 har DSATS og SPE arrangert Drillbotics konkurransen for å engasjere studenter til å løse utfordringer ... -
Detection of Bit Wear in Sandstone and Conglomerate - Analysis of Drilling Data and Formation Characteristics
Sæther, Linda (Master thesis, 2016)When drilling in challenging formations the drill bit experiences wear to some extent, which may lead to a reduced rate of penetration. Since the drilling costs are so high, it is desirable to be able to detect bit wear ... -
Detection of Microannulus by the use of Acoustic Measurements
Lie, Kristine (Master thesis, 2016)Well integrity is crucial to ensure safe operations over the lifecycle of a well. Poor cement bonding between casing and cement is a common problem, yet crucial for the wells integrity. If neglected, it could function as ... -
Development and Assessment of a Multi-Pipe Oil-Water Bulk Separator Concept for Subsea Applications
Skjefstad, Håvard Slettahjell (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 ... -
A digital approach to modeling tubular wear and its effects on well integrity
Teigland, Andreas (Doctoral theses at NTNU;2022:122, Doctoral thesis, 2022)Drilling of wells for exploration and production of petroleum resources requires thorough analysis of well integrity. Well integrity can be defined as the application of technical, operational and organizational solutions ... -
Digital well planning - Well Intervention
Selmer, Håkon (Master thesis, 2021)Dagens olje og gass industrien har sett en formidabel fremgang i teknologi og utstyr som er nødvendig for å kunne gjennomføre stadig mer krevende brønnintervensjoner. Brønnplanleggingsprosessen har ikke sett den samme ... -
Digital Well Planning: Next Generation Workflow
Bareksten, Magnus; Vambheim, Lars Djuve (Master thesis, 2022)Petroleumsnæringen er inne i en periode med høyt fokus på digitalisering og automatisering. Dette fokuset er spesielt drevet av en ambisjon om å redusere kostnader, effektivisere drift og øke sikkerheten. Flere nye ... -
Digital Well Planning: Next Generation Workflow
Bareksten, Magnus; Vambheim, Lars Djuve (Master thesis, 2022)Petroleumsnæringen er inne i en periode med høyt fokus på digitalisering og automatisering. Dette fokuset er spesielt drevet av en ambisjon om å redusere kostnader, effektivisere drift og øke sikkerheten. Flere nye ... -
Directional Drilling - Advanced Trajectory Modelling
Strømhaug, Andreas Holm (Master thesis, 2014)SummaryDrilling operations are a significant cost in the process of recovering hydrocarbons. The operations are advanced and associated with large HSE and financial risks. The main objectives in a successful drilling ... -
Directional Wells in Shallow Reservoirs using Curved Conductors and Hammering - Concept and analysis of a novel installation method for curved conductors
Korvald, Lars Andreas; Schreiner, Jørgen Andre (Master thesis, 2015)One of the challenges encountered when planning wells in shallow reservoirs in the arctic is the development of a plan to drill a relief well. According to NORSOK such a plan is required to be in place prior to the initiation ... -
Downhole Mechanical Isolation Equipment - Analysis of retrieval operations
Sortland, Ole Severin Tønder (Master thesis, 2015)To encounter challenges when retrieving downhole mechanical isolation (DMI) equipment like plugs, junk baskets and prongs, using well intervention techniques, are not uncommon. These deviations result in additional runs, ... -
Downsizing semi-submersible rig by using an electric BOP and riserless drilling system
Ahmadli, Mehman (Master thesis, 2021)Sammenlignet med andre sektorer er petroleumsindustrien mer konservativ for å gjøre betydelige endringer, og for å tilpasse ny teknologi. Olje- og gasselskapene foretrekker å holde seg til de tradisjonelle og velprøvde ... -
Drilling Fluid Volume Change due to Hydrate Formation and its Impact on Well Control
Gunhildrud, Michaela; Helgestad, Bendik (Master thesis, 2017)Natural gas hydrates are crystal structures of water containing gas inside cavities. Hydrates can form if gas and water are present in a system with high pressure and low temperature conditions. Hydrate formation is ... -
Drilling in Karstified Carbonates: Early Risk Detection Technique
Maksimov, Danil; Pavlov, Alexey; Sangesland, Sigbjørn (Peer reviewed; Journal article, 2020)Heterogeneous nature and complex rock properties of carbonate reservoirs makes the drilling process challenging. One of these challenges is uncontrolled mud loss. Caves or a system of cavities could be a high-risk zone for ... -
Effects of Well Temperature on Wellhead Fatigue Assessment
Sevillano, Lucas Cantinelli (Doctoral theses at NTNU;2018:175, Doctoral thesis, 2018)Summary Construction and later re-entering of subsea wells require the use of a tubular component called riser to connect the rig to the wellhead. The motions of the rig and of the riser itself, which are created by the ... -
Electrical casing - Experimental investigation of electric field on casing to improve cement-casing bonding
Alvaro Claver, Carlos Manuel (Master thesis, 2018)Cementing is an essential part of every drilling operation. Protection of the wellbore from formation fluid invasion is one of the primary tasks of a cement job. Failure in this task results in catastrophic events, such ... -
Electrokinetics Application in Concrete and Well Construction
Jafariesfad, Narjes; Geiker, Mette Rica; Sangesland, Sigbjørn; Gawel, Kamila; Torsæter, Malin (Chapter, 2020)Electrically induced or coupled transport processes including electrophoresis, electroosmosis and electromigration in solutions and porous media under an external electric field have been extensively studied and employed ... -
Error and Ellipses of Uncertainty Analysis in Far North
Muhammadali, Shaine (Master thesis, 2017)Drilling in Barents Sea and North Sea proves to be an extremely difficult task, as these regions are situated in auroral zones having higher latitude, where, magnetic interference develop from magnetic field, magnetic ... -
Evaluation and Testing of Thermoset Polymer Resin for Remedial Repair of Sustained Casing Pressure
Øyan, Even Gunnarsson (Master thesis, 2017)The number of petroleum wells exhibiting pressure build-up in the annulus as a result of lost cement integrity is evident, this is known as Sustained Casing Pressure (SCP). There are several factors contributing to lost ... -
Evaluation of a dual relief well operation
Kallhovd, Anders (Master thesis, 2013)The Norwegian petroleum authority initiated a new regulation in 2012. All new wells on the Norwegian shelf originally designed to be killed by two relief wells, in case of a worst case scenario, are rejected. The reason ...