Browsing NORCE Energi og teknologi by Title
Now showing items 102-121 of 336
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Ensemble-based constrained optimization using an exterior penalty method
(Peer reviewed; Journal article, 2021)In science and engineering, non-linear constrained optimization has been a useful mathematical technique for many practical applications. Of interest to us is its applicability in the modeling and prediction of hydrocarbon ... -
An ensemble-based decision workflow for reservoir management
(Peer reviewed; Journal article, 2022)It is challenging to make optimal field development and reservoir management decisions with diminishing resources and low-emission requirements. For an optimal exploitation of the reservoir fluids, it is necessary to ... -
Ensemble-based history matching of the Edvard Grieg field using 4D seismic data
(Peer reviewed; Journal article, 2024)The Edvard Grieg field is a highly complex and heterogeneous reservoir with an extensive fault structure and a mixture of sandstone, conglomerate, and shale. In this paper, we present a complete workflow for history matching ... -
Ensemble-Based Well-Log Interpretation and Uncertainty Quantification for Well Geosteering
(Peer reviewed; Journal article, 2022)Hydrocarbon reservoirs are often located in spatially complex and uncertain geologic environments, where the associated costs of drilling wells for exploration and development are notoriously high. These costs may be reduced ... -
Environmental Controls of InSAR-Based Periglacial Ground Dynamics in a Sub-Arctic Landscape
(Peer reviewed; Journal article, 2021)Periglacial environments are characterized by highly dynamic landscapes. Freezing and thawing lead to ground movement, associated with cryoturbation and solifluction. These processes are sensitive to climate change and ... -
Environmental DNA metabarcoding for benthic monitoring: A review of sediment sampling and DNA extraction methods
(Peer reviewed; Journal article, 2021)Environmental DNA (eDNA) metabarcoding (parallel sequencing of DNA/RNA for identification of whole communities within a targeted group) is revolutionizing the field of aquatic biomonitoring. To date, most metabarcoding ... -
Environmental risk assessment of an underwater acoustic mobile network
(Lecture, 2022)Underwater vehicles make inspections and surveillance safer and with a lower carbon footprint than ship-based operations. However, to effectively operate them, they need robust positioning and communication systems. One ... -
Etablering av Digital Innovation Hub - Ocean Technology
(Research report, 2020)Denne rapporten dekker aktiviteter som ble gjort i prosjektet fra og med våren 2019 til og med vinteren 2020. Vi redegjør i denne rapporten for hva en digital innovasjons hub (DIH) er og hvordan den komplementerer det ... -
Evaluation of safe operating envelope for CO2 injection under uncertain rock mechanical parameters and earth stresses
(Journal article; Peer reviewed, 2024)Carbon Capture and Storage (CCS) is a pre-requisite to decarbonize CO2 emissions from industrial sectors and as an industry capable of compensating for hard-to-abate emissions in a net zero scenario. A method was developed ... -
The evolution of the Fram Strait sea ice volume export decomposed by age: estimating with parameter-optimized sea ice-ocean model outputs
(Peer reviewed; Journal article, 2023)Sea ice export through the Fram Strait is crucial in the dynamic evolution of Arctic sea ice and can further modulate Arctic sea ice mass balance as well as the ocean thermohaline circulation. In this study, based on outputs ... -
Examination & interpretation of the seismic tomography data in respect to "up-lift" phenomena and stress-induced anisotropy
(DigiMon ACT2 (NORCE);D2.4, Research report, 2022)In recent years, global concerns about greenhouse gas emissions have stimulated considerable interest in carbon capture and storage (CCS) as a climate change mitigation option that can be used to reduce man-made CO2 ... -
Experimental investigation of the rock cutting process and derivation of the 3D spatial distribution of the formation strength using in-cutter sensing
(Peer reviewed; Journal article, 2023)Recent advances in downhole measurements allow to accurately measure drilling forces at the drill bit, and estimate the evolution of the rock strength along the well profile. This paper presents an experimental methodology ... -
Experimentally assessing the uncertainty of forecasts of geological carbon storage
(Journal article; Peer reviewed, 2024)Geological storage of carbon dioxide is a cornerstone in almost every realistic emissions reduction scenario outlined by the Intergovernmental Panel on Climate Change. Our ability to accurately forecast storage efficacy ... -
The Extended Timing Annotation Dataset for Sentinel-1-Product Description and First Evaluation Results
(Peer reviewed; Journal article, 2022)This article introduces the extended timing annotation dataset (ETAD) product for Sentinel-1 (S-1) which was developed in a joint effort of German Aerospace Center (DLR) and European Space Agency (ESA). It allows to correct ... -
Extremum seeking for real-time optimal drilling control
(Peer reviewed; Journal article, 2019)This paper demonstrate the feasibility and illustrates some challenges of applying extremum seeking control to online optimization of the drilling process. Specifically, we consider the problem of finding the hook-load ... -
Fast robust optimization using bias correction applied to the mean model
(Peer reviewed; Journal article, 2020)Ensemble methods are remarkably powerful for quantifying geological uncertainty. However, the use of the ensemble of reservoir models for robust optimization (RO) can be computationally demanding. The straightforward ... -
Fault Classification of Axial and Radial Roller Bearings Using Transfer Learning through a Pretrained Convolutional Neural Network
(Peer reviewed; Journal article, 2018)Detecting bearing faults is very important in preventing non-scheduled shutdowns, catastrophic failures, and production losses. Localized faults on bearings are normally detected based on characteristic frequencies associated ... -
Fault core thickness: Insights from siliciclastic and carbonate rocks
(Peer reviewed; Journal article, 2019)Fault core accommodates intense deformation in the form of slip surfaces and fault rocks such as fault gouge, cataclasite, breccia, lenses, shale smear, and diagenetic features. The complexity and variation in fault core ... -
Feasibility of using distributed chemical sensing for CO2 leakage monitoring
(DigiMon ACT2 (NORCE);D1.8, Research report, 2021)The feasibility study focused on the development of new fiber for distributed chemical sensing (DCS) that will allow direct detection of CO2 leakages in the environment. This is particularly important for monitoring well ... -
Feature extraction and pattern recognition in time-lapse pressure transient responses
(Journal article; Peer reviewed, 2024)Monitoring of modern wells equipped with permanent downhole gauges and flowmeters provides large datasets of pressure, temperature and flowrate measurements. On a limited scale, selected events from these datasets are ...