Blar i Institutt for geovitenskap og petroleum på tittel
Viser treff 981-1000 av 2528
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Friction Factor Model and Interpretation of Real Time Data
(Master thesis, 2013)The interest in torque and drag issues has over the last years increased when the complexity of wells drilled has become higher. The petroleum industry continually expands the extended reach drilling envelope, which forces ... -
Friction Factors in Oil Wells through Analysis of Hook Load
(Master thesis, 2014)As the easy oil and gas is gone, there is today a need for more complex wells in orderto extract the remaining hydrocarbons. Over recent decades, both inclination andlength of drilled wells have increased significantly. ... -
Friction Reduction by using Nano-Fluids in Drilling
(Master thesis, 2014)The increasing requirements of drilling fluids in long extended reach wells desires for new solutions to solve torque and drag problems in the wellbore. Nanotechnology is an upcoming technology development, which is already ... -
Friction reduction by using nanoparticles in oil-based mud
(Master thesis, 2014)Nowadays, increasing demand on petroleum resources and depletion of easy accessible reservoirs result in exploration of challenging reservoirs. Drilling of deeper reservoirs is an important part of this challenge where ... -
Frictional fluid instabilities shaped by viscous forces
(Peer reviewed; Journal article, 2023)Multiphase flows involving granular materials are complex and prone to pattern formation caused by competing mechanical and hydrodynamic interactions. Here we study the interplay between granular bulldozing and the stabilising ... -
Frictional Pressure vs. Rheological Models
(Master thesis, 2010)When the drilling fluid leaves the mud pump, it circulates through the stand pipe, rotary hose, swivel, Kelly, drill pipe, drill collar, bit and the annulus between the drill string and the open hole or the casing. During ... -
From Caledonian collapse to North Sea Rift: The extended history of a metamorphic core complex
(Peer reviewed; Journal article, 2020)Extensional systems evolve through different stages due to changes in the rheological state of the lithosphere. It is crucial to distinguish ductile structures formed before and during rifting, as both cases have important ... -
From fossil to active hydrothermal outflow in the back-arc of the central Apennines (Zannone Island, Italy)
(Peer reviewed; Journal article, 2022)Post-orogenic back-arc magmatism is accompanied by hydrothermal ore deposits and mineralizations derived from mantle and crustal sources. We investigate Zannone Island (ZI), back-arc Tyrrhenian basin, Italy, to define the ... -
From Integrated Operations to Remote Operations: Socio-technical Challenge for the Oil and Gas Business
(Chapter, 2021)Remote operations started with integrated operations (IO) some years ago where designated tasks and roles were shifted from off- to onshore. Remote operations, however, is more than remote control as the operational model ... -
From Integrated to Remote Operations: Digital Transformation in the Energy Industry as Infrastructuring
(Chapter, 2022)The energy industry in Norway has a long tradition in using information technology to enable integrated operations, namely, remote collaboration between personnel at offshore installations and experts at onshore office ... -
From orogeny to rifting: insights from the Norwegian ‘reactivation phase’
(Peer reviewed; Journal article, 2020)Based on observations from the Mid-Norwegian extensional system, we describe how, when and where the post-Caledonian continental crust evolved from a context of orogenic disintegration to one of continental rifting. We ... -
From Static to Dynamic Stiffness of Shales: Frequency and Stress Dependence
(Peer reviewed; Journal article, 2019)The relation between static and dynamic stiffness in shales is important for many engineering applications. Dynamic stiffness, calculated from wave velocities, is often related to static stiffness through simple empirical ... -
Frost wedging and fracture propagation in hard rock slopes in cold regions
(Master thesis, 2020)In cold regions, the presence of moisture combined with freezing temperatures leads to a phys- ical weathering process in rocks known as frost weathering. Frost weathering is driven by the volumetric expansion of ice and ... -
Frostens utvikling mellom tunnel og bergmasse.: Felt- og laboratoriemålinger med WG Tunnelhvelv T100.
(Master thesis, 2012)I Norge er vinterkulden et problem i forbindelse med tunneldrift. I løpet av vinteren utsettes tunneler for frost i varierende grad, og det kan oppstå problemene med isdannelser som utgjør en trussel for sikkerheten og ... -
Frostlaboratoriet – testing av varme/kuldeutveksling mellom tunnel og omkringliggende bergmasse
(Master thesis, 2010)I forbindelse med Jernbaneverkets utbygging av Gevingåsen jernbanetunnel vurderer Jernbaneverket BASF Masterseal kombinert med sprøytbetong som vann- og frostsikring i tunnelen. I den forbindelse har Jernbaneverket og ... -
Frosttekniske egenskaper for frostsikringsmaterialer og effekt av ulike frostsikringsmetoder
(Master thesis, 2014)Telehivskader er et kjent problem på norske veger og medfører forringet kjørekomfort og unødvendige ekstrakostnader i form av rehabilitering. På bakgrunn av dette ble det i 2011 satt ned en ekspertgruppe som skulle se på ... -
A Full Laboratory Study on the Physical and Mechanical Properties of a Bismuth Plug
(Chapter, 2023)Well plugging and abandonment can be very expensive, time consuming and problematic. This is because it is the least considered process during a well's life cycle. Setting a plug downhole in an efficient and successful ... -
Full waveform inversion and wave equation migration using 4D seismic from the Sleipner Field - A CO2-monitoring study
(Master thesis, 2017)In this study, two surveys from the Sleipner field in the North Sea are investigated. The surveys cover the same area, but are acquired at different times - respectively before and after the initiation of CO2 injection. ... -
Full Waveform Inversion of Wide-Angle Ocean Bottom Seismometer data of a synthetic subduction zone model
(Master thesis, 2021)The water, which penetrated the upper part of the crust gets dragged down in a subduction zone, consecutively it gets released due to increasing heat and migrates in the above tectonic plate. This is believed to be the ... -
Full-scale pullout tests of rock anchors in a limestone quarry focusing on bond failure at the anchor-grout and grout-rock interfaces
(Peer reviewed; Journal article, 2023)Rock anchors are a common safety measure for stabilising large-scale infrastructure, such as bridge towers, retaining walls, rock slopes and windmills. There are four principal failure modes for rock anchors: (a) tensile ...