Blar i Institutt for geovitenskap og petroleum på tittel
Viser treff 1072-1091 av 2529
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Gradient-based production optimization with simulation-based economic constraints
(Journal article; Peer reviewed, 2017)In reservoir management, production optimization is performed using gradient-based algorithms that commonly rely on an adjoint formulation to efficiently compute control gradients. Often, however, economic constraints are ... -
Graphical User Interface for Petroleum Field Optimization Software (FieldOpt) - Development of Interface for Configuring Driver Files
(Master thesis, 2016)This Master's thesis concerns the further development of FieldOpt, a petroleum field optimization software, in close collaboration with the Petroleum Cybernetics Group at NTNU. This particular part of the development has ... -
The graphite occurrences of Northern Norway, a review of geology, geophysics, and resources
(Peer reviewed; Journal article, 2020)There are three provinces in Northern Norway in which occurrences of graphite are abundant; the Island of Senja, the Vesterålen archipelago, and the Holandsfjorden area. From these provinces, we report graphite resources ... -
Gravitational reactivation of a pre-existing post-Caledonian fault system: the deep-seated gravitational slope deformation at Middagstinden, western Norway
(Journal article; Peer reviewed, 2016)The origin of linear features in mountain terrain that form distinct vertical steps is generally not obvious and has been discussed to be related to either tectonic faulting or gravitational slope deformation. A strong ... -
Gravity and magnetic separation of sulphides from the Akselberg calcite marble
(Master thesis, 2014)Calcite marble from Brønnøy Kalk AS’ Akselberg deposit is raw material for production of Ground Calcium Carbonate (GCC) used as filler and coating pigment in paper industry. One of the most important parameters for GCC ... -
Green EOR - Numerical and Experimental Studies on Nanoparticle Induced Wettability Alternation of Rock
(Master thesis, 2016)Considering the fact that the number of new discoveries is decreasing and the current resources are rapidly consuming, the application of new technologies to sustain the production rates is essential. Nanotechnology due ... -
Green foam-based methods of mineral and ion separation
(Chapter, 2020)We discuss an important gap in the literature on progress toward the development of green (microbial-derived) reagents in conventional (froth flotation) and emerging (foam flotation)separation methods. For comparison, we ... -
Gro Field Assessment: A Lean Gas Condensate, Low Permeability Simulation Study
(Master thesis, 2011)New technologies increase the development of deep water fields and a significant portion of these undeveloped deep discoveries are gas condensates in low permeability reservoirs. This study is aimed at investigating the ... -
Ground source energy in crystalline bedrock - increased energy extraction by using hydraulic fracturing in boreholes
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:161, Doctoral thesis, 2004)The use of improved equipment and methodology can result in considerable reductions in the drilling costs for medium- to large sized ground source heat pump system in crystalline bedrock. The main point has been to use ... -
Groundwater Effect on Faulted Rock Mass: An Evaluation of Modi Khola Pressure Tunnel in the Nepal Himalaya
(Journal article; Peer reviewed, 2014)Groundwater has a negative impact not only in construction activity, but also in stability of a tunnel. Severity increases particularly in tunnels passing through fault gouge and breccia, where rock material is completely ... -
Groundwater heat pump systems. New insights on system design and on fluid flow in unconsolidated aquifers
(Doctoral theses at NTNU;2021:336, Doctoral thesis, 2021)This PhD thesis concerns groundwater heat pump (GWHP) systems in Norway, which are systems that utilize groundwater as a source of thermal energy for heating and cooling applications in buildings. GWHP systems can typically ... -
Groundwater quality of crystalline bedrock aquifers in Norway
(Dr. ingeniøravhandling, 0809-103X; 2002:53, Doctoral thesis, 2002)In cooperation with the Geological Survey of Norway, the Norwegian Radiation Protection Authority, and local health authorities, 1604 groundwater samples collected from Precambrian and Palaeozoic crystalline bedrock aquifers ... -
Grunnvanns- og løsmassekartlegging med georadar for etablering av et akvakulturanlegg på Frya i Gudbrandsdalen
(Master thesis, 2021)En åpen akvifer på Frya er blitt kartlagt systematisk med georadar for å kartlegge grunnvannsstrømmen, interaksjonen mellom akviferen og elvene Frya og Gudbrandsdalslågen, samt løsmassemektigheten og -sammensetningen. ... -
Grunnvannsbevegelse: forskning og praksis for energibrønner med lukket kollektor
(Master thesis, 2011)I denne tredelte oppgaven er det undersøkt ulike virkninger grunnvannsbevegelse kan ha på energibrønner med lukket kollektor. Det er også forsket på mulige metoder for å enkelt påvise hvor vidt en energibrønn tilføres ... -
Grunnvannstrykk på en delvis drenert tunnelkledning: Simulering av sprekkevannstrykket bak sprøytebetongkledningen i Gevingåstunnelen ved bruk av "finite element"-metoden og "distinct element"-metoden
(Master thesis, 2019)Én måte å kontrollere vanninnlekkasjen i en tunnel er ved bruk av en udrenert vanntett tunnelkledning. Når en slik kledning prosjekteres må man ta hensyn til muligheten for høye grunnvannstrykk i bergmassen bak kledningen. ... -
Grunnvasstrøyming i breelvavsettingar i Mølmannsdalen, Røros
(Master thesis, 2017)I Mølmannsdalen omlag 3,5 km søraust for Røros sentrum er der bora to produksjonsbrønnar og åtte peilebrønnar i eit drikkevassreservoar. Vasskjelda er samansett av eit grovt lag i botn med eit nettverk av mektige grusåsar ... -
Grusressurs i Ringerike kommune
(Master thesis, 2022)Ringerike kommune er rik på byggeråstoffer, spesielt grus. Kommunen har tre forekomster av nasjonal betydning som er viktig for nasjonal forsyning. Kommunen må være flink til å prioritere riktig slik at viktige ressurser ... -
Grusressurser i Ringerike kommune
(Master thesis, 2022)Ringerike kommune er rik på byggeråstoffer, spesielt grus. Kommunen har tre forekomster av nasjonal betydning som er viktig for nasjonal forsyning. Kommunen må være flink til å prioritere riktig slik at viktige ressurser ... -
Gruve 7, Svalbard - Kartlegging av grunnforurensning og vurdering av spredning av forurensning
(Master thesis, 2015)Den industrielle aktiviteten som kullgruvedrift representerer, kan være en kilde til grunnforurensning med negative konsekvenser både helse- og miljømessig. For å kunne drive kulldrift på Svalbard, må derfor driften ... -
Guidelines and best available techniques for submarine tailings disposal in Norwegian fjords: Recommendations from the NYKOS project
(NIVA-rapport;, Research report, 2019)The NYKOS project aimed at addressing some of the main knowledge gaps on the environmental impacts of submarine tailing disposal (STD) to facilitate the development of techniques, practices and management measures that ...