PhD and Master's theses 1989-2018
Main content
Phd Theses
2010-2018
2015
Mohammad Taghi Vafaei
Reactive transport modelling of hydrate phase transition dynamics in porous media
Supervisor: Prof. Bjørn Kvamme
2014
Bergit Brattekås
Conformance Control for Enhanced Oil Recovery in Fractured Reservoirs
Supervisor: Prof. Arne Graue and Martin Fernø
Jarand Gauteplass
Pore-to-Core Laboratory Upscaling and Visualization of Enhanced Oil Recovery and CO2 Storage
Supervisor: Prof. Arne Graue and Martin Fernø
Ashok Chejara
Gas Hydrates in Porus Media: CO2 Storage and CH4 Production
Supervisor: Prof. Bjørn Kvamme
Øyvind Eide
CO2 Injection for Enhanced Oil Recovery - Production Mechanisms in Fractured Reservoirs
Supervisor: Prof. Arne Graue and Martin Fernø
Khaled Jemai
Modeling Hydrate Phase Transitions in Porous Media Using a Reactive Transport Simulator
Supervisor: Prof. Bjørn Kvamme
2013
Knut Arne Birkedal
Empirical and Numerical Evaluation of Mechanisms in Gas Production from CH4-Hydrates
Supervisor: Prof. Arne Graue
Muhammad Qasim
Microscale modeling of natural gas hydrates in reservoirs
Supervisor: Prof. Bjørn Kvamme
2010
Åsmund Haugen
Fluid Flow in Fractured Carbonates: Wettability effects and Enhanced Oil Recovery
Supervisor: Prof. Arne Graue
2000-2010
2009
Amund Brautaset
In Situ fluid dynamics and CO2 injection in porous rocks
Supervisor: Prof. Arne Graue
2008
Jarle Husebø
Monitoring depressurization and CO2-CH4 exchange production scenarios for natural gas hydrates
Supervisor: Prof. Arne Graue
Geir Ersland
Studies of flow mechanisms and hydrate phase transistions in fractures rocks
Supervisor: Prof. Arne Graue
Martin Fernø
A Study of Capillary Pressure and Capillary Continuity in Fractured Rock
Supervisor: Prof. Arne Graue
Else B. Johannesen
NMR Characterization of Wettability and how it Impacts Oil Recovery in Chalk
Supervisor: Prof. Arne Graue
Thomas Bognø
Impacts on Oil Recovery from Capillary Pressure and Capillary Heterogeneities
Supervisor: Prof. Arne Graue
2007
Eirik Aspenes
Wettability Effects on Oil Recovery Mechanisms in Fractured Chalk
Supervisor: Prof. Arne Graue
Robert Moe
Oil Recovery By Waterflooding Fractured Chalk At Different Wettabilities
Supervisor: Prof. Arne Graue
2000
Kaare Langaas
Modelling of Immiscible Two-Phase Flow in Porous Media with the Binary Fluid Lattice Boltzmann Method
Supervisor: Prof. Kristoffer Kolltveit
Samuel Subbey
Regularizing the Volterra Integral Equation - The Capillary Pressure Case
Supervisor: Prof. Kristoffer Kolltveit
1990-2000
1999 (1)
Alv-Arne Grimstad
On Nonlinearities and Covariance Analysis for the Reservoir Fluid Flow Model
Supervisor: Prof. Kristoffer Kolltveit
1998 (2)
Hege Urkedal
Design of Multiphase Flow Experiments
Supervisor: Prof. Kristoffer Kolltveit
Bjørn Gerry Viksund
Fluid Flow in Fractures Chalk Models at Different Wettabilities
Supervisor: Prof. Arne Graue
1997 (1)
Alex Johne Larsen
Evaluation of Transport Properties for Immiscible Flow in Porous Media
Supervisor: Arne Skauge
1996 (2)
H-M. Helset
Three-Phase Flow and Capillarity in Porous Media
Supervisor: Prof. Kristoffer Kolltveit
Knut Arne Børresen
Experiments and Simulations of Fluid Flow in Heterogeneous reservoirs Models - Emphasis on Impact from Crossbeds and Fractures
Supervisor: Prof. Arne Graue
1995 (1)
O. Eleri Ogbonnia
Application of the Nuclear Tracer Imaging and the Computer Tomography Techniques to Multiphase Flow in Porous Media
Supervisor: Prof. Arne Graue
1993 (3)
Aase Charlotte Bøe Tjøsen
The Effect of Heterogeneity on Fluid Flow: Stochastic Modeling of Absolute and Relative Permeabilities in Oil Reservoirs
Supervisor: Prof. Kristoffer Kolltveit
Øyvind Dugstad
An Experimental Study of Tracers for Labeling of Injection Gas in Oil Reservoirs"
Supervisor: Prof. Kristoffer Kolltveit
P. Ingsøy
Gravity Segregated Displacement in Stratified Porous Media
Supervisor: Prof. Kristoffer Kolltveit
1991 (1)
Eirik Søndenå
Studies of Capillary Pressure and Electrical Resistivity in Porous Rock Samples at Reservoir Conditions
Supervisor: Prof. Kristoffer Kolltveit
1980-1990
1989 (2)
Jan-Eirik Nordtvedt
Using the Inverse Problem Formulation to Calculate Characteristic Properties of the Porous Medium
Supervisor: Prof. Kristoffer Kolltveit
First Job Affiliation: Statoil
J.R. Ursin
Gammatomografi med anvendelse innenfor værskeflømming i porøse medier
Supervisors: J.R. Lien and Prof. Kristoffer Kolltveit
Master's Theses
2014
Sunniva Brudvik Fredriksen
Supervisors: Martin Fernø and Arne GraueFirst Job Affiliation: UiB
Ingrid Eikemo Opdal
Mobility Control by CO2-foam Injection for Intergrated EOR
Supervisors: Martin Fernø and Arne GraueFirst Job Affiliation: Halliburton
Kristine Bø
Mobility Control for CO2 EOR in Heterogeneous Reservoirs
Supervisors: Martin Fernø and Arne GraueFirst Job Affiliation: National Oilwell Varco
Vegard Havre Paulsen
An Experimental Study of CO2 Sequestration in Saline Aquifers and Gas Hydrates
Supervisors: Geir Ersland and Arne GraueFirst Job Affiliation: ?
Julia Selvåg
Vanninjektivet og svekking av kalk under injeksjon av kaldt vann
Supervisors: Bergit Brattekås and Arne GraueFirst Job Affiliation: ?
2013
Christian Hågenvik
CO2 Injection in Hydrate Bearing Sandstone with Excess Water
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: Statoil
Ary Ahmed
En eksperimentell studie av CO2 injeksjon for økt oljeutvinning i oppsprukket kalk
Supervisors: Martin Fernø and Arne Graue
First Job Affiliation: Wintershall
Hans Berge
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: ?
Thomas Mathiassen
En eksperimentell studie av CO2 lagring i sedimentære bergarter ved bruk av ulike avbildingsteknikkerSupervisors: Geir Ersland and Arne GraueFirst Job Affiliation: ?
Kamal Ahmed
CO2 injeksjon for økt oljeutvinning i kalk
Supervisors: Martin Fernø and Arne Graue
First Job Affiliation: Wintershall
Stuart Baird
CO2 EOR by Diffusion in Fractured Chalk
Supervisors: Martin Fernø and Arne Graue
First Job Affiliation: -
Reza Hossainpoor
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: Wintershall
Stig Andre Winter Langlo
Enhanced Oil Recovery by CO2 and CO2-foam Injection in Fractured Limestone Rocks
Supervisors: Martin Fernø and Arne Graue
First Job Affiliation: Statoil
Truls Håheim Hamre
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: Halliburton
Tom Ydstebø
Enhanced Oil Recovery by CO2 and CO2-Foam in Fractured Carbonates
Supervisors: Martin Fernø and Arne Graue
First Job Affiliation: -
Stig Holme Lie
Diffusion as an Oil Recovery Mechanism During CO2 Injection in Fractured
Supervisors: Martin Fernø and Arne Graue
First Job Affiliation: Eni
2012
Glenn Andre Dåtland Kvinge
En eksperimentell studie av CO2 lagring i sandstein og kalkstein med bruk av ulike avbildningsteknikker (In norwegian)
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: Ross Offshore
Malin Haugen
CO2 Injection in Fractured Chalk for Enhanced Oil Recovery
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: ConocoPhillips
Ane Skibenes
Injeksjon av CO2-skum for økt oljeutvinning i oppsprukket karbonatbergart under ulike fuktforhold
Supervisors: Martin Fernø and Arne Graue
First Job Affiliation: Statoil
Torstein Fjelltveit Skagseth
An Experimental Study of CO2 Injection for Improved Oil Recovery in Fractured Chalk
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: Schlumberger
Eirik Fosse
Et Eksperimentelt Studie av CO2-injeksjon for Oljeutvinning i Kalk.
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: Halliburton
Andreas Lien
Investigating the Effect of Oil Composition, Fractures, Intial Saturation and Wettability on C02-EOR in Chalk Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: Statoil
Anders Cristophersen
Økt oljeutvinning ved injeksjon av CO2-skum i en oppsprukket karbonatbergart ved forskjellige fuktforhold (In norwegian)
Supervisors: Martin Fernø and Arne Graue
First Job Affiliation: Statoil
Jorn-Anders Fløysand Tveit
An Experimental Study of Water Mixing in Carbonate Rocks Using Different Imaging Techniques
Supervisors: Martin Fernø and Arne Graue
First Job Affiliation: ENI
Nicolai-Ivar Majlaton
A Visual Study of CO2 Injection at the pore-scale Using Micromodes
Supervisors: Martin Fernø
First Job Affiliation: ?
Håvard Nakken Follesø
Fluid Displacements during Multiphase Flow Visualized at the Pore Scale Using Micromodels
Supervisors: Arne Graue and Martin Fernø
First Job Affiliation: Statoil
2011
Stina Pedersen
Supervisor: Arne Graue
First Job Affiliation: Statoil
Nima Mani
Supervisors: Arne Graue and Martin Fernø
First Job Affiliation: Statoil
Lars Petter Hauge
Resistivity measurements during gas hydrate formation and subsequent CO2 injection in porous sandstone
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: UiB
Sondre Svenningsen
An experimental study of CO2 injection for enhanced oil recovery
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: Statoil
Kjell-Rune Hoff
Eksperimentell og numerisk studie av CO2 injeksjon for økt oljeutvinning
Supervisors: Geir Ersland and Arne Graue
First Job Affiliation: Baker Hughes
Bjarte Børve
Økt oljeutvinning i kalk basert på potensialbestemmende ioner for endring av fukt
Supervisors: Arne Graue and Martin Fernø
First Job Affiliation: Statoil
Sigurd Nybø
Skaleringskriterier for vannflømming i sandstein og tertiær oljeutvinning ved bruk av CO2
Supervisors: Arne Graue and Martin Fernø
First Job Affiliation: ?
Hilde Tokheim Nistov
En eksperimentell studie av økt oljeutvinning i oppsprukne reservoar ved bruk av polymergelè og surfaktanter
Supervisors: Arne Graue and B. Brattekås
First Job Affiliation: Halliburton
Øyvind Eide
Integrated EOR and Waterflood Stability Criteria in Carbonate Rock
Supervisors: Arne Graue and Martin Fernø
First Job Affiliation: UiB
Jarand Gauteplass
Primærdreneringsprosesser ved bruk av gass målt med porøs plate, sentrifuge og under skuminjeksjon for økt oljeutvinning
Supervisors: Arne Graue and Martin Fernø
First Job Affiliation: UiB
2010
Nyheim, Arita
Supervisor: Arne Graue
First Job Affiliation: Roxar
Grønsdal, Reidar
Økt oljeutvinning I kalk basert på vannkjemi og potensialbestemmende ioner for endring av fukt
Supervisor: Arne Graue
First Job Affiliation: Baker Hughes
2009
Birkedal, Knut ArneThesis: “Hydrate Formation and CH4 Production from Natural Gas Hydrates - Emphasis on Boundary Conditions and Production Methods. Bergen: University of Bergen.”
Supervisor: Arne Graue
First Job Affiliation: UiB (PhD)
Brattekås, BergitThesis: “EOR by Polymer Gel Extrusion through Fractures: An Experimental Study of Water Leakoff as Function of Flow Rate, Wettability and Relative Permeability.”
Supervisor: Arne Graue
First Job Affiliation: UiB (PhD)
Hansen, BeateThesis: “Evaluating tertiary water based EOR methods on the Veslefrikk field, with emphasis on analyzing sodium silicate injection by numerical simulation.”
Supervisor: Arne Graue
First Job Affiliation: Statoil
Ngo, ThyThesis: “Hydrate formation, permeability and CH4 production from CH4-hydrates.”
Supervisor: Arne Graue
Første jobb etter eksamen: -
Odland, JonasThesis: “Hydratdannelse og metanproduksjon fra naturlig gasshydrat - produksjonsmetoder og resistivitetsutvikling.” .
Supervisor: Arne Graue
First Job Affiliation: Sea drill A/S
2008
Marianne Berge
Thesis: “ Waterbased EOR in Carbonates by Adding Sulphate or Surfactants to Injection Water, and Determine the Impacts on the Oil Recovery at V arious Wettabilities Using NMR Technology"
Supervisor: Arne Graue
First Job Affiliation: ResLab Integration AS
Lejla Tipura
Thesis: “EOR in Fractured Carbonate Reservoirs by Wettability Reversal"
Supervisor: Arne Graue
First Job Affiliation: Odin Petroleum
Haldis Riskedal
Thesis: "Wettability and Rock Characterization of Heterogeneous Limestone Utilizing NMR"
Supervisor: Arne Graue
First Job Affiliation: StatoilHydro
Jorunn Åsheim
Thesis: " EOR in Fractured Carbonate Reservoirs by Wettability Reversal (In English)"
Supervisors: Arne Graue
Første jobb etter eksamen: StatoilHydro
Oskar Johansen
Thesis: " Experimental and Numerical Study of Mixing of Injection Water and In-Situ Water During Oil Production Using an NTI Technique, and Determening Oil Recovery in a Tertiary Miscible CO2 Flood Using MRI"
Supervisor: Arne Graue
First Job Affiliation: ResLab Integration AS
Sjur Wiggo Jensen
Thesis: "An Experimental Study of Miscible Displacement in Carbonate Rocks"
Supervisor: Arne Graue
First Job Affiliation: Halliburton
2007
Åsmund Haugen
Thesis: “ Experimental and Numerical Study of Two Phase Flow in Fractured Limestone"
Supervisor: Arne Graue
First Job Affiliation: UiB (PhD)
Øyvind Bull
Thesis: "An Experimental and Numerical Study of Oil Recovery Mechanisms in Fractured Chalk at Neutral Wettability Conditions"
Supervisor: Arne Graue
First Job Affiliation: Hydro
2005
Martin Fernø
Thesis: "Experimental investigation of Rock Characteristics and Waterflood Oil Recovery in Outcrop Carbonate Rock at Various Wettability Conditions"
Supervisor: A. Graue
First Job Affiliation: UiB (PhD)
Amund Brautaset
Thesis: " Experimental an Numerical Investigation of the Dynamic Relationship between In-Situ Pressure and Fluid Saturation During Waterfloods at Different Wettabilities"
Supervisor: A. Graue
First Job Affiliation: UiB (PhD)
Jarle Husebø
Thesis: " Methane Production from Hydrates in Porous Media During CO2 Sequestration"
Supervisor: A. Graue
First Job Affiliation: UiB (PhD)
Geir Ersland
Thesis: "Experimental Investigation of Fluid Flow in Fractured Reservoirs Utilizing Nuclear Tracer- and Magnetic Resonance Imaging"
Supervisor: A. Graue
First Job Affiliation: UiB (PhD)
2004
Jostein Skretting
Thesis: " Experimental and Numerical Study of Mixing of Connate Water and Injection Water in Oil Production by Water Injection at Various Rates"
Supervisor: A. Graue
First Job Affiliation: UiB (PhD)
Pål-Ove Sukka
Thesis: “Improving the Nuclear Tracer Imaging Centrifuge Method for Measuring In-Situ Capillary Pressure and Comparison with Other Methods"
Supervisor: A. Graue
First Job Affiliation: Hydro
Magne Torsvik
Thesis: " Wettability Alteration for Studies of Oil Recovery at Less Water-Wet Conditions and at Various Differential Pressures" (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: Reslab
Else B. Johannesen
Thesis: " NMR Characterization of Wettability Alterations Using Different Crude Oils" (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: UiB (PhD)
Marianne Steinsbø
Thesis: " Oil Recovery by Spontaneous Imbibition and Waterfloods of Transition Zones in Chalk" (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: UiB (PhD)
2001
Kjartan Nesse
Thesis: " A Numerical and Experimental Study of Waterflood Properties for Fractured Chalk at Moderately-Water-Wet Conditions" (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: Norsk Hydro
2000
Johannes Ramsdal
Thesis: " Experimental Studies of Oil Recovery Mechanisms in Fractured Chalk at Various Wettabilities" (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: Norsk Hydro
Eirik Aspenes
Thesis: " Impacts of Wettability on In-Situ Water Mobility and Oil recovery in Chalk Reservoirs"
Supervisor: A. Graue
First Job Affiliation: UiB (PhD)
Harald Krüger
Thesis: " NMR Chararcterization of Methane in an Artificial Porous Medium "
Supervisor: Jan R. Lien
First Job Affiliation: UiB (PhD)
1999
Robert Moe
Thesis: " Numerical and Experimental Investigation of Oil Recovery in Fractured Chalk"
Supervisor: A. Graue
First Job Affiliation: UiB (PhD)
Randi Valestrand
Thesis: " The Impact of permeability Heterogeneities on Flow Function Estimation"
Supervisor: K. Kolltveit
First Job Affiliation: UiB (PhD)
Thomas Bognø
Thesis: " Numerical and Experimental Investigations of Waterfloods in Chalk Emphasizing Impacts of Wettability and Fractures"
Supervisor: A. Graue
First Job Affiliation: UiB (PhD)
1998
Svein Olav Dyrhol
Thesis: " Studie av to-og trefase relativ permeabilitet i reservoar materiale"
Supervisor: A. Skauge
First Job Affiliation: Teacher
1997
Anne Elisabeth Indrebø Haga
Thesis: "Instrumentation of a Vertical Flow-Rig and Studies of Horizontal and Vertical Three-Phase Flow in Chalk " (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: Teacher (Navy)
1996
Nina E. Bjørnevoll (Dept. of Geology)
Thesis: " Experimental Developement of Fractures in Porous Sandstone, and the effect of Fractures on Permeability" (in Norwegian)
Supervisor: A. Graue (co-sup)
First Job Affiliation: PPCo Norway
Geir S. Håskjold
Thesis: "Estimering av relativ permeabilitet og kapillartrykk frå tyngdedrenering"
Supervisor: K. Kolltveit
First Job Affiliation: Norsk Hydro
Kari Nordås
Thesis: "Capillary Pressure Determined from Centrifuge Data "
Supervisor: K. Kolltveit / J.E. Nordtvedt
First Job Affiliation: Texas A&M
Sverre Hetland
Thesis: " Experimental Studies of Oil Production by Waterflooding in Fractured Chalk" (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: ResLab A.S.
1995
Steinar Takvam
Thesis: "Analyse av tyngdedrenering"
Supervisor: K. Kolltveit
First Job Affiliation:
Erik S. Pedersen
Thesis: "Two Dimensional Saturation Imaging in Heterogeneous Media" (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: Statoil
Marianne Kjøde Lie
Thesis: " Evaluation of Outcrop Chalk as Analogues for North Sea Chalk Reservoirs"
Supervisor: A. Graue
First Job Affiliation: Geco
Egil Boye Petersen
Thesis: "A Study of Multiphase Flow in Dania Outcrop Chalk " (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: ResLab A.S.
Terje Eilertsen
Thesis: " Experiments and Simulation of Immiscible Flow in Crossbedded Reservoir Models"
Supervisor: A. Graue
First Job Affiliation: Fina
1994
Elisabeth Rose
Thesis: " Studies of Capillary Numbers by Fluid Displacement in Porous Rocks, Simulations and Experiment Studies of Gravity Drainage " (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: Total
Hege Urkedal
Thesis: "Sensitivity Analysis and Estimation of Relative Permeability and Capillary Pressure Functions from Transient and Equilibrium Steady State Data"
Supervisor: K. Kolltveit
First Job Affiliation: Rogalandforskning
Elisabeth Tonheim
Thesis: "Establishing Various Wettability Conditions in Outcrop Chalk " (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: Teacher (Gymnas)
Bjørn Gerry Viksund
Thesis: "Imbibitions Properties in Chalk during Waterfloods" (in Norwegian)
Supervisor: A. Graue
First Job Affiliation: Statoil
André Sylte
Thesis: " Tre-Fase strøm i porøse medier: En simuleringsanalyse"
Supervisor: K. Kolltveit
First Job Affiliation: Rogalandsforskning
Johne Alex Larsen
Thesis: "Tre-Fase strøm i porøse medier: En simuleringsanalyse"
Supervisor: K. Kolltveit
First Job Affiliation: Norsk Hydro
1991
Frank Hovland
Thesis: "Et studie av gravitasjons- og viskøse krefters innvirkning på fortrengningsprosesser i lagdelte reservoarstrukturer ved hjelp av en analytisk og numerisk modell"
Supervisor: K. Kolltveit / J.E. Nordtvedt
First Job Affiliation: Rogalandsforskning
Magnar Aga
Thesis: "Bruk av Levenberg-Marquardt algoritme og B-spline parameterisering til å bestemme de karakteristiske funksjonene til det porøse mediet"
Supervisor: K. Kolltveit / J.E. Nordtvedt
First Job Affiliation: Statoil
1990
Per Mongstad
Thesis: " "
Supervisor: A. Skauge
First Job Affiliation: Norsk Hydro
Erling Nikolai Kindem
Thesis: "En undersøkelse av økt oljeutvinning fra en sandsteinsblokk ved hjelp av akustisk og termisk stimulering "
Supervisor: J.R. Lien
First Job Affiliation: Hydro
Einar Ebeltoft
Thesis: " Eksperimentelle studier av Zanthanflømming i porøse medium"
Supervisor: J.R. Lien
First Job Affiliation: Rogalandsforskning
1989
Bjørn Matre
Thesis:
Supervisor: A. Skauge
First Job Affiliation: Rogalandsforskning
Bjørn Arne Kvanvik
Thesis: "Bestemmelse av relative permeabiliteter ved fortrengningsprosesser i lange kjerner; to-fase systemer"
Supervisor: K. Kolltveit
First Job Affiliation: Rogalandsforskning
1988
Eirik Søndenå
Thesis: "Utvikling av utstyr for måling av kapillartrykkskurven ved reservoar-betingelser"
Supervisor: K. Kolltveit
First Job Affiliation: Geco
1986
Aase Charlotte Bøe Tjølsen
Thesis: "Eksperimentelle studier av olje/vann fortrengninger i sandsteinskjerner. Deteksjon og beregning av metningsprofiler ved bruk av radioaktiv merkingsmetode"
Supervisor: J.R. Lien / K. Kolltveit
First Job Affiliation: Norsk Hydro
Jan-Eirik Nordtvedt
Thesis: "Eksperimentelle studier av olje/vann fortrengninger i sandsteinskjerner. Fortrengningseksperiment gjort ved bruk av radioaktiv merkingmetode sammenholdes med matematiske studier"
Supervisor: J.R. Lien / K. Kolltveit
First Job Affiliation: Statoil