Browsing Institutt for geovitenskap og petroleum by Title
Now showing items 1585-1604 of 2535
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Nytt løp ved Oslofjorden ved bruk av TBM som drivemetode
(Master thesis, 2014)Det planlagte nye løpet ved Oslofjordtunnelen blir prosjektert for driving med boring og sprengning. Samtidig finnes det mye data fra drivingen av dagens løp som gir et godt grunnlag for å lage en sammenligning av driving ... -
Nytteverdi av 3D-modellering og BIM i forbindelse med ingeniørgeologiske problemstillinger ved Follobanen
(Master thesis, 2019)BIM-modellering av grunnforholdene er på vei inn i tunnel- og anleggsbransjen. En BIM-modell kan gi en detaljert oversikt over grunnforholdene, og enkelt visualisere hvilke geologiske forhold som befinner seg bak ... -
Nytteverdi av ingeniørgeologiske undersøkelser ved driving av tunnelene på Nordøyvegen
(Master thesis, 2020)I perioden 2019-2022 bygges Fv. 659 Nordøyvegen for å gi fastlandsforbindelse til Nordøyane i Ålesund kommune. Som en del av prosjektet bygges tre undersjøiske tunneler; Haramsfjordtunnelen, Nogvafjordtunnelen og ... -
Nytteverdi av styrt kjerneboring for planlegging av E39 i tunnel under Romsdalsfjorden
(Master thesis, 2016)I forbindelse med fergefri E39 mellom Kristiansand og Trondheim er det planlagt å krysse Romsdalsfjorden med bru og undersjøisk tunnel. Tunnelen vil med sine 16 km bli den lengste undersjøiske vegtunnelen som noensinne er ... -
Observations on and use of curves of current dimensionless potential versus recovery factor calculated from models of hydrocarbon production systems in Journal of Petroleum Science and Engineering
(Peer reviewed; Journal article, 2021)In this work, curves of current dimensionless potential versus recovery factor are computed with models of hydrocarbon production systems. Additionally, a method to estimate production profiles using curves of current ... -
Observed and Estimated Effects of Cuttings on Equivalent Circulating Density
(Master thesis, 2014)More extended reach wells, highly deviated and ultra deep are being drilled to meet the world s continuously increasing energy demand. Hole cleaning remains one of the greatest challenges throughout drilling operations, ... -
Obtaining the Source Wavefield from Multicomponent Data and its Application in Full Waveform Inversion
(Master thesis, 2015)In full waveform inversion (FWI) we need to know the seismic source signature. In practice this is generally unknown, and it must be estimated using statistical methods or inversion. However, these methods rely on assumptions ... -
Oedometer Tests for Assessing Possible Impact of Fluid-Shale Interactions on a Shale Barrier Formation
(Master thesis, 2017)The focus of the research for this thesis was shale as a barrier. A hole must be permanently plugged and abandoned (PP\&A) at the end of a its lifetime. Regulations require that the annulus is properly sealed off so that ... -
Offset dependence of overburden time-shifts from ultrasonic data
(Journal article; Peer reviewed, 2020)Depletion or injection into a reservoir implies stress changes and strains in the reservoir and its surroundings. This may lead to measurable time-shifts for seismic waves propagating in the subsurface. To better understand ... -
Offset-Dependent Overburden Time-Shifts from Ultrasonic Data
(Chapter, 2019)Depletion or injection into a reservoir implies stress and strain changes in the reservoir and its surroundings. This may lead to measurable time-shifts for seismic waves propagating in the subsurface. We have measured ... -
Offshore Gravimetric and Subsidence Monitoring
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:183, Doctoral thesis, 2008) -
Oil agglomeration of metal-bearing shale in the presence of mixed cationic-anionic surfactants
(Journal article; Peer reviewed, 2018)This paper reports oil agglomeration of fine metal-bearing shale particles in the presence of cationic (dodecylamine hydrochloride) and anionic (sodium dodecyl sulfate) surfactants and their mixture. The experimental results ... -
Om dagbruddsveggen ved Elkem Tana
(Master thesis, 2014)Elkem Tana AS produserer i overkant av 1 million tonn kvartsitt fra dagbruddet i Austertana, og er dermed Norges største kvartsittprodusent. I forbindelse med den planlagte utvidelsen av bruddet har det vært nødvendig med ... -
Om tommelfingerregler og konusplassering i norske kraftverk
(Chapter, 2019)Et sentralt designprinsipp for uforede trykktunneler er at bergspenningene må overstige det innvendige vanntrykket i tunnelen. I motsatt fall kan man få hydraulisk jekking av tunnelen med store vannlekkasjer og tilhørende ... -
On Linking of Task Analysis in the HRA Procedure: The Case of HRA in Offshore Drilling Activities
(Journal article; Peer reviewed, 2018)Human reliability analysis (HRA) has become an increasingly important element in many industries for the purpose of risk management and major accident prevention; for example, recently to perform and maintain probabilistic ... -
On low frequencies emitted by air guns at very shallow depths - An experimental study
(Journal article; Peer reviewed, 2019)In marine seismic acquisition, the enhancement of frequency amplitudes below 5 Hz is of special interest because it improves imaging of the subsurface. The frequency content of the air gun, the most commonly used marine ... -
On occurrence of point singularities in orthorhombic media
(Journal article; Peer reviewed, 2019)Degeneracies of the slowness surfaces of shear (and compressional) waves in low‐symmetry anisotropic media (such as orthorhombic), known as point singularities, pose difficulties during modelling and inversion, but can be ... -
On Processing and Inversion of Marine Magnetotelluric Data
(Doctoral theses at NTNU;2017:311, Doctoral thesis, 2017) -
On Regional Distribution and Characterization of The Klippfisk Formation Limestone
(Master thesis, 2016)This study documents and discusses the detailed sedimentology of the Berriasian to Early Barremian Klippfisk Formation on the western Barents Sea, at Bjarmeland Platform, northern part of the Bjørnøya Basin, northeastern ... -
On technologies for shale barrier evaluation in the North Sea
(Chapter, 2018)Cement evaluation tools have been used in the oil industry for decades to examine the integrity of cement bonding to the well casing and openhole. It has been suggested that such tools also can be used to verify the presence ...