Browsing UiS Brage by Author "Augustsson, Carita"
Now showing items 1-16 of 16
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Architecture of shoreface to deep-water systems in segmented rift systems: Evidence from the southern margin of the Sogn Graben, northern North Sea
Zhong, Xiaoan; Escalona, Alejandro; Augustsson, Carita (Peer reviewed; Journal article, 2020-03)Naturally fractured reservoirs are highly dependent on capillary forces to recover hydrocarbons during water injection. Water can spontaneously imbibe and expel oil if positive capillary forces exist; purely counter-current ... -
Automatic evaluation of wavelength spectra from quartz by means of machine learning
Kvandal, Ove (Master thesis, 2022)I have for this thesis worked on automating the steps in evaluating wavelength spectra from quartz. To do this I have applied different machine learning algorithms suitable to the automation requirement at each step, and ... -
Depositional setting and diagenesis as keys to reservoir quality: Lower Cretaceous in the southwestern Barents Sea
Ärlebrand, Angelica (Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-20)Porosity and permeability are controlled by the interaction of sediment provenance, depositional processes, and diagenesis. This study attempts to determine and predict which role the depositional environment has in enhancing ... -
etrological, geochemical (major, trace, and rare earth elements), and U–Pb zircon data of the Tamatán Group, NE Mexico
Casas-Peña, J. M.; Ramírez-Fernández, J. Alonso; Velasco-Tapia, F.; Alemán-Gallardo, E. A.; Augustsson, Carita; Weber, Bodo; Frei, Dirk; Jenchen, Uwe (Peer reviewed; Journal article, 2021)From samples of the Paleozoic Tamatán Group (Huizachal–Peregrina Anticlinorium, Tamaulipas, Mexico), petrographic (qualitative and modal) and geochemical analyses (major, trace, and rare earth elements) were conducted. The ... -
Geologisk kartlegging av Stavanger Domkirke og mulige opphavskilder ved lokale øyer (i samarbeid med Arkeologisk Museum)
Espedal, Øyvind (Bachelor thesis, 2022)Stavanger Domkirke er en av de eldste domkirkene i Norge. Tross sin status og alder, mangler det dokumentasjon på byggefaser og ressurser brukt i anledning til byggingen av kirken. I dette arbeidet har derfor deler av ... -
Geomorfologisk effekt på den sedimentære sammensetningen i den permiske Rotliegend-guppen i Nordsjøen
Berland, Lars Erik (Bachelor thesis, 2022)Den permiske Rotliegend-gruppen i Nordsjøen er delt inn i to bassenger, det nordlige permiske bassenget og det sørlige permiske bassenget. Det nordlige permiske bassenget, som også omfatter den norske sektoren, er mindre ... -
Influencing factors on petrography interpretations in provenance research – a case-study review
Augustsson, Carita (Peer reviewed; Journal article, 2021)The use of framework petrography is a common initial step in provenance research of sand and sandstone. The data tend to be interpreted based on the three main components quartz, feldspar, and lithic fragments. Surprisingly ... -
Lateral compositional variations in the Upper Jurassic source rock in the southwestern Barents Sea – an organic or inorganic disclosure
Helleren, Solveig (Masteroppgave/UIS-TN-IER/2019;, Master thesis, 2019-06)Prominent high-value gamma-ray spikes in the maximum flooding surfaces of the Alge Member of the Hekkingen Formation display an uncommon stratigraphic and regional variation in the southwestern Barents Sea. The variation ... -
A LSSVR-PSO machine learning model for the estimation of reservoir porosity from petrophysical well logs
Luo, Zongqiang (Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-06-10)Reservoir porosity is a key parameter in the reservoir evaluation and geomechanics. To obtain accurate measurement of porosity can be time-consuming and expensive by core sampling or applying various well logging tools. ... -
Middle to Upper Jurassic Depositional Setting in the Hammerfest Basin, Southwestern Barents Sea
Braut, Tonje Iren (Masteroppgave/UIS-TN-IER/2018;, Master thesis, 2018-07-06)The Middle to Upper Jurassic Fuglen and Hekkingen formations of the southwestern Barents Sea represents both important source rocks and seals in several petroleum plays in the region. The current understanding of this time ... -
North-Sea basement and provenance of the Permian Rotliegend Group
Achterberg, Ann Michelle van (Bachelor thesis, 2022)Conglomerates and sandstones from the Permian Rotliegend Group contain clasts of Caledonian origin that suggests a basement source area and a sediment transport direction connected to the tectonic activity in Carboniferous ... -
Operatør bias i punkttelling
Gingstad, Thomas (Bachelor thesis, 2023)Tynnslip punktelling er en metode for å finne mineral sammensetningen til en bergart. Ulike feil kan påvirke resultatet. Målet med studien er å studere effekten av operatør bias av punkttelling resultater. Operatør bias ... -
Petrophysical Evaluation of the Thinly Bedded Nordmela Formation in the Johan Castberg Field, Barents Sea
Espeli, Susanne (Masteroppgave/UIS-TN-IER/2020;, Master thesis, 2020-07)This study demonstrates how contrasting different distributions of shale in a reservoir determines the petrophysical properties. The Skrugard prospect (Well 7220/8-1), drilled in 2011, confirmed that the western Barents ... -
Provenance of the Upper Cretaceous Lange-Lysing deep-marine sandstone in the Norwegian Sea: with implication for reservoir quality.
Tegle, Kristina Waagbø (Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06)The provenance and reservoir properties of Upper Cretaceous Lange-Lysing sandstone in the Norwegian Sea have been determined by using integrated whole-rock geochemical, petrographic and detrital zircon U-Pb age dating by ... -
Provenance on the Lysing-Lange megasequences on the Dønna Terrace: focus on stratigraphic variability and lateral sandbody connectivity
Olsen, Thomas Meldahl (Masteroppgave/UIS-TN-IER/2019;, Master thesis, 2019-06-29)The Cenomanian to Coniacian-Turonian Lange-Lysing megasequences are located on the Dønna Terrace in the Norwegian Sea. Provenance study using traditional provenance methods such as petrography, whole-rock geochemistry, and ... -
Provenance, depositional setting and diagenesis as keys to reservoir quality of the Lower Cretaceous in the SW Barents Sea
Arlebrand, Berit Angelica; Augustsson, Carita; Escalona, Alejandro; Grundvåg, Sten-Andreas (Peer reviewed; Journal article, 2021-07)This study examines the role of the depositional environment for the final reservoir quality in four Lower Cretaceous sandstone reservoirs in the southwestern Barents Sea by linking facies to the distribution of primary ...