Blar i Institutt for geovitenskap og petroleum på dokumenttype "Journal article"
Viser treff 121-140 av 628
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Decision support method for early-phase design of offshore hydrocarbon fields using model-based optimization
(Journal article; Peer reviewed, 2019)This paper presents the development of a method to provide decision support in the feasibility studies and concept planning phases of oil and gas field development. The objective in developing the methodology was to provide ... -
Deconvoluting complex structural histories archived in brittle fault zones
(Journal article; Peer reviewed, 2016)Brittle deformation can saturate the Earth’s crust with faults and fractures in an apparently chaotic fashion. The details of brittle deformational histories and implications on, for example, seismotectonics and landscape, ... -
Deep Crustal Flow Within Postorogenic Metamorphic Core Complexes: Insights From the Southern Western Gneiss Region of Norway
(Journal article; Peer reviewed, 2019)Viscous crustal flow can exhume once deeply buried rocks in postorogenic metamorphic core complexes (MCCs). While migmatite domes record the flow dynamics of anatectic crust, the mechanics and kinematics of solid‐state ... -
Deep learning of terrain morphology and pattern discovery via network-based representational similarity analysis for deep-sea mineral exploration
(Journal article; Peer reviewed, 2021)The race to explore valuable metals in the deep ocean recently emerged, and nations now seek to secure prospective areas for minerals that may support the low-carbon transition, from electric vehicles to wind turbines. ... -
Deep-Sea Mining–A Bibliometric Analysis of Research Focus, Publishing Structures, International and Inter-Institutional Cooperation
(Journal article; Peer reviewed, 2022)Deep-sea mining is a multidimensional concept that requires interdisciplinary research and development to close the current knowledge gaps. This study conducts a bibliometric analysis of the research focus, publishing ... -
Deep-seated faults and hydrocarbon leakage in the Snøhvit Gas Field, Hammerfest Basin, Southwestern Barents Sea
(Peer reviewed; Journal article, 2016)High-quality 3D seismic data are used to analyze the history of fault growth and hydrocarbon leakage in the Snøhvit Field, Southwestern Barents Sea. The aim of this work is to evaluate tectonic fracturing as a mechanism ... -
Deformation mechanisms of blueschist facies continental metasediments may offer insights into deep episodic tremor and slow slip events
(Peer reviewed; Journal article, 2022)Exhumed fossil subduction zones are archives of the deformation conditions and mechanisms from depths not directly accessible. Microstructural analysis of samples exhumed therefrom offers insights into the micromechanics ... -
Deliverability of Wells in Shallow Confined Aquifers of Non-Integer Spatial Dimensions
(Journal article; Peer reviewed, 2015)We propose a generalized methodology to predict the deliverability of wells in fractional drainage areas. A fractional model is characterized by a single term power-law variation of the rock properties. Such a model may ... -
Derivative-free trust region optimization for robust well control under geological uncertainty
(Peer reviewed; Journal article, 2022)A Derivative-Free Trust-Region (DFTR) algorithm is proposed to solve the robust well control optimization problem under geological uncertainty. Derivative-Free (DF) methods are often a practical alternative when gradients ... -
Description of Free Energy for Immiscible Two‐Fluid Flow in Porous Media by Integral Geometry and Thermodynamics
(Journal article; Peer reviewed, 2018)In integral geometry, intrinsic volumes are a set of geometrical variables to characterize spatial structures, for example, distribution of fluids in two‐fluid flow in porous media. McClure et al. (2018, https://doi.org/ ... -
Design considerations for borehole thermal energy storage (BTES): A review with emphasis on convective heat transfer
(Journal article; Peer reviewed, 2019)Borehole thermal energy storage (BTES) exploits the high volumetric heat capacity of rock-forming minerals and pore water to store large quantities of heat (or cold) on a seasonal basis in the geological environment. The ... -
Design of Groundwater Heat Pump Systems. Principles, Tools, and Strategies for Controlling Gas and Precipitation Problems
(Journal article; Peer reviewed, 2019)The utilization of groundwater heat pump systems is increasing in Norway, which are currently widely employed for heating and cooling applications in the town center of Melhus. The investigations of the Melhus installations ... -
Design of multi-luminescent silica-based nanoparticles for the detection of liquid organic compounds
(Journal article; Peer reviewed, 2024)Tracer testing in reservoir formations is utilised to determine residual oil saturation as part of optimum hydrocarbon production. Here, we present a novel detection method of liquid organic compounds by monodisperse SiO2 ... -
Design review of the headrace system for the Upper Tamakoshi project, Nepal
(Journal article; Peer reviewed, 2017)One way to reduce the cost of construction of hydroelectric projects with underground waterway systems is to allow the rock mass to act as natural concrete and to adopt unlined/shotcrete-lined pressure tunnels to the extent ... -
Detailed engineering geological assessment of a shotcrete lined pressure tunnel in the Himalayan rock mass conditions: a case study from Nepal
(Peer reviewed; Journal article, 2020)The complex topography, geology, and tectonicenvironment prevailingin the Himalaya are the mainchallengeswhile applying theunlinedorshotcretelinedpressuretunnelconcept for hydropowerprojects.Inaddition,rockmassesintheHim ... -
Detecting gas leakage using high-frequency signals generated by air-gun arrays
(Journal article; Peer reviewed, 2017)Recent field experiments have demonstrated that marine air-gun arrays create acoustic energy greater than 1 kHz. We have suggested to use the high-frequency signal as a source to look for gas leakage at, for instance, a ... -
Detecting multiscale karst features including hidden caves using microgravimetry in a Caledonian nappe setting: Mefjell massif, Norway.
(Journal article; Peer reviewed, 2018)Cave passages and karst features form negative density contrasts expressed in gravity field anomalies. We present an interpretation approach for microgravimetry, applicable for challenging geological settings with heterogeneous ... -
Detrital zircons of the vast Triassic Snadd and De Geerdalen formations, Barents Shelf, reveal temporal changes in sediment source
(Peer reviewed; Journal article, 2023)Studies of detrital-zircon age distributions from Triassic sedimentary rock successions on the Arctic Barents Shelf have resulted in different provenance interpretations. Here, we provide new U–Pb/Hf detrital-zircon data ... -
Development of a 3D structural model of a mine by consolidating different data sources
(Journal article; Peer reviewed, 2017)Joints and faults are inherent parts of the rock mass. In the vast majority of mining slopes, discontinuity structures play an important role in slope stability and may trigger a slope failure. The most important step in ... -
Development of an Ultraviolet-Spectrophotometric Method for Analysis of Esterquat-Containing Flotation Collectors in Aqueous Solutions
(Journal article; Peer reviewed, 2018)In this study, a rapid and simple ultraviolet‐spectrophotometric method was developed and validated for the quantitative determination of esterquat‐containing flotation collector FLOT 2015 in aqueous solutions. This method ...