Blar i Institutt for geovitenskap og petroleum på tittel
Viser treff 56-75 av 2529
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A new approach to dynamic barite sag analysis on typical Field oil-based drilling fluid
(Chapter, 2019)Laboratory and field experiences record that sagging of weighting agents such as barite in drilling fluids is often worse in dynamic conditions, e.g. pumping, tripping or drill pipe rotation, than in static conditions. ... -
A new laboratory apparatus for the measurement of seismic dispersion under deviatoric stress conditions
(Journal article; Peer reviewed, 2016)A better understanding of seismic dispersion and attenuation of acoustic waves in rocks is important for quantitative interpretation of seismic data, as well as for relating seismic data, sonic-log data, and ultrasonic ... -
A novel model-based scheme for kick and loss mitigation during drilling
(Journal article; Peer reviewed, 2013)A model-based in-/out-flux detection scheme for managed pressure drilling is presented. We apply a globally exponentially stable adaptive observer which estimates the unknown states and parameters of the hydraulic system ... -
A Novel Tool for Cement Evaluation
(Master thesis, 2017)The annular casing cement is an important part of the well barrier throughout the life cycle of a well. With the increasing number of plug and abandonment (P&A) operations, increased attention is now given to annular cement ... -
A Numerical and Analytical Investigation of the Relation Between Transport Properties and Grain Size Distribution
(Master thesis, 2018)There have been many and varied attempts describing the relation between transport and rock properties for porous materials, including the work of Kozeny (1927), Carman (1938), and Berg (1970). Common features of these ... -
A petrophysical Evaluation of tidal heterolithic Deposits
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:131, Doctoral thesis, 2004)The main goal of this thesis, A petrophysical evaluation of tidal heterolithic deposits: application of a near wellbore model for reconciliation of scale dependent well data, is to give a better and less uncertain estimate ... -
A Pore Network Investigation of Factors Influencing the Residual Oil Saturation
(Master thesis, 2018)In this thesis a pore network modelling approach is used to investigate the correlation between different pore structure descriptors and the residual oil saturation at the capillary limit. For this study, a range of ... -
A reduced random sampling strategy for fast robust well placement optimization
(Journal article; Peer reviewed, 2019)Model-based decision-making in oilfield development often involves hundreds of computationally demanding reservoir simulation runs. In particular, well placement optimization under uncertainty in the geologic representation ... -
A review on the performance of conventional and energy-absorbing rockbolts
(Journal article; Peer reviewed, 2014)This is a review paper on the performances of both conventional and energy-absorbing rockbolts manifested in laboratory tests. Characteristic parameters such as ultimate load, displacement and energy absorption are reported, ... -
A search for seismic characteristics of vertical fluid leakage along major faults and in the overburden of fault intersections in the Mikkel area with an eye to CO2 storage
(Master thesis, 2010)The gas/condensate Mikkel Field is located in a structurally complex area in the Norwegian Sea, offshore Norway. The Mikkel structure is not filled to its spill point and it is possible that hydrocarbons might have leaked ... -
A Sedimentary Investigation of the Lower Triassic Formations and their Underlying Permo-Carboniferous Units across Spitsbergen, Svalbard
(Master thesis, 2014)This study documents and discusses the detailed sedimentology of the lowermost strata of the Triassic Vikinghøgda Fm. and Vardebukta Fm., and their underlying units, which belong (i) to the Permian Kapp Starostin Fm. in ... -
A sedimentologic description and interpretation of the lower Eocene river dominated deltafront deposits in the Tremp-Graus Basin, NE Spain
(Master thesis, 2011)The lower Eocene siliciclastic deposits within the Tremp-Graus basin was first interpretedfor the field guide of the IAS 9th Congress in Nice, 1975. The interpretation as an overall progradation of two mouth bar complexes, ... -
A Sedimentological and Petrographical Investigation of the Todalen Member and the Boundary Beds of the Endalen Member.: Within the Firkanten Formation (Paleocene) in the Central Basin of Spitsbergen, Svalbard.
(Master thesis, 2013)The Todalen and Endalen members (Firkanten Formation, Paleocene) comprise the earliest clastic sedimentary fill of the Central Basin on Spitsbergen, Svalbard. These two members represent delta plain- and delta front deposits ... -
A Sedimentological Study of the De Geerdalen Formation with Focus on the Isfjorden Member and Palaeosols
(Master thesis, 2016)In this study sedimentological depositional environments of the Upper Triassic De Geerdalen Formation in Svalbard have been investigated. Facies and facies associations of the formation are presented, however the main focus ... -
A sedimentological study of the deltaic De Geerdalen Formation in Fulmardalen and of fluvial deposits in the Snadd Formation on the Finnmark Platform
(Master thesis, 2017)In the Late Paleozoic, Svalbard and the Barents Sea were part of a large, shallow embayment located at the north-western corner of the supercontinent Pangea. During the Triassic this embayment was gradually filled with ... -
A sedimentological study of the organic-rich Botneheia Formation (Middle Triassic) with emphasis on the ichnogenus Thalassinoides, Edgeøya, Svalbard
(Master thesis, 2019)Den midt-triasiske Botneheiaformasjonen på den østlige delen av Svalbard er vurdert til å være den beste kildebergarten i den nordvestlige delen av Barentshavet med et totalt organisk karbon innhold på opptil 12 %. Skifer ... -
A Seismic Modeling Study of Sand Injectites
(Master thesis, 2011)In this thesis 2D seismic modeling of various injectites with the aim of understanding seismic responses better, is performed and documented. A study of sand injectites from the Tampen Spur Area, North Sea, provided a set ... -
A Sensitivity Study of Three-Phase Relative Permeability and Capillary Pressure Models
(Master thesis, 2010)During the exploitation of the hydrocarbon reservoirs the large amount of hydrocarbon is swept my pressure sources. This source can be either natural or artificial. Natural sweep might occur when the reservoir has strong ... -
A Simple Analytical Approach to Simulate Underbalanced-drilling in Naturally Fractured Reservoirs - The Effect of Short Overbalanced Conditions and Time Effect
(Journal article; Peer reviewed, 2010)This paper describes an analytical approach to investigate the nature of short overbalanced conditions and time effects during underbalanced drilling (UBD) in a naturally fractured reservoir. This study uses an analytical ... -
A spatial analysis of sandstone bodies in the De Geerdalen Formation on Edgeøya, Svalbard
(Master thesis, 2019)Denne oppgaven undersøker triassiske sandsteinslegemer i De Geerdalsformasjonen, eksponert på den arktiske Edgeøya på den østlige delen av Svalbard. I trias befant Svalbard og Barentshavregionen seg på en nordlig del av ...