Blar i Institutt for geovitenskap og petroleum på tittel
Viser treff 1858-1877 av 2565
-
Quantitative Seismic Monitoring
(Doctoral theses at NTNU;2022:127, Doctoral thesis, 2022)Seismic data is the main input for reservoir characterization in developing plays, when - in general - only conceptual geological models and few wells are available. When repeated over time, in a process called 4D seismic ... -
Quantitative spatial analysis of rockfalls from road inventories: a combined statistical and physical susceptibility model
(Journal article; Peer reviewed, 2014)Quantitative spatial analyses and statistical susceptibility assessments based on road inventories are often complicated due to the registration of impacts instead of source areas. A rockfall inventory from the Norwegian ... -
A quantitative study of salinity effect on water diffusion in n-alkane phases: from pore-scale experiments to molecular dynamic simulation
(Peer reviewed; Journal article, 2022)Numerous mechanisms have been proposed to untangle the effect of a low concentration of dissolved salts in the water flooding medium. One potential mechanism for enhanced oil movement is proposed with osmosis effect, ... -
Quantitative time lapse seismic analysis - rock physics, repeatability and inversion aspects
(Doctoral thesis at NTNU;2015:127, Doctoral thesis, 2015)Quantitative prediction of pressure as well as saturation effects from time-lapse seismic data is one of the topics of interest for geophysical society since the last decade. Time-lapse amplitude variation with offset ... -
Quartz Fine Particle Processing: Hydrophobic Aggregation by Shear Flocculation
(Peer reviewed; Journal article, 2023)This study investigates the hydrophobic aggregation of fine quartz particles through shear flocculation induced by dodecylamine in aqueous solutions. The effect of stirring speed, collector concentration, flocculation time, ... -
Quick clay monitoring using distributed acoustic sensing: A case study from Rissa, Norway
(Peer reviewed; Journal article, 2023)Quick clay avalanche is one of the most devastating landslide types worldwide. Hence, an early warning system is in demand to mitigate the fatal consequences caused by such events. To address this, distributed acoustic ... -
Rapid post-glacial bedrock weathering in coastal Norway
(Peer reviewed; Journal article, 2021)Quantifying bedrock weathering rates under diverse climate conditions is essential to understanding timescales of landscape evolution. Yet, weathering rates are often difficult to constrain, and associating a weathered ... -
Rate of Hydrate Inhibitor in Long Subsea Pipelines
(Master thesis, 2012)This thesis is divided into several parts. The first part deals with hydrate theory and where hydrates form in the gas-and oil-dominated systems. A review of how hydrate plugs is formed and a method for removing hydrate ... -
Raw Materials Research and Innovation to achieve the EU Green Deal -A Position Paper of the ETP SMR
(Research report, 2022)Foreword With its inclusion into the Horizon 2020 research programme, raw materials supply – for the very first time – became a societal challenge in EU policy making, 2 years after the EU raw materials initiative submission ... -
Real time optimization of systems with fast and slow dynamics using a lookahead strategy
(Chapter, 2020)Systems with fast and slow dynamics give rise to objectives in different time scales which may not be aligned. The existing dynamic optimal control methods might become computationally infeasible due to the fine discretization ... -
Real-Time Data-Driven Drilling Optimization
(Doctoral theses at NTNU;2021;348, Doctoral thesis, 2021)Drilling a well for exploration or production of petroleum resources is a costly and complicated procedure. There is a great potential for cost reduction by drilling safer, faster and with less Non-Productive Time (NPT). ... -
Real-time detection of drilling problems & issues during drilling by listing & using their signs both on the surface and downhole
(Master thesis, 2023)Olje- og gassindustrien er allment anerkjent som en av de farligste sektorene globalt. Prosessen med å utvinne hydrokarboner fra underjordiske reservoarer innebærer betydelige risikoer og usikkerheter. Det er derfor ... -
Real-Time Detection of Karstification Hazards While Drilling in Carbonates †
(Peer reviewed; Journal article, 2022)The nature of carbonate deposition can cause the development of unique geological features such as cavities and vugs called karsts. Encountering karsts while drilling can lead to serious consequences. To improve drilling ... -
Real-time Estimation of Surge and Swab During Running of Casing
(Master thesis, 2010)The importance of ECD prediction was recognized at an early stage of the drilling history. Narrow pressure windows make the ECD prediction even more important.The variation in ECD with respect to surge and swab pressures ... -
Real-Time Minimization of Mechanical Specific Energy with Multivariable Extremum Seeking
(Peer reviewed; Journal article, 2021)Drilling more efficiently and with less non-productive time (NPT) is one of the key enablers to reduce field development costs. In this work, we investigate the application of a data-driven optimization method called ... -
Real-time optimized drilling operation by using Artificial Intelligence
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:27, Doctoral thesis, 2013) -
Recent Advancements in Metallurgical Processing of Marine Minerals
(Peer reviewed; Journal article, 2021)Polymetallic manganese nodules (PMN), cobalt-rich manganese crusts (CRC) and seafloor massive sulfides (SMS) have been identified as important resources of economically valuable metals and critical raw materials. The ... -
Recent developments in generation, detection and application of nanobubbles in flotation
(Peer reviewed; Journal article, 2022)This paper reviews recent developments in the fundamental understating of ultrafine (nano) bubbles (NBs) and presents technological advances and reagent types used for their generation in flotation. The generation of NBs ... -
Recent technological and methodological advances for the investigation of landslide dams
(Peer reviewed; Journal article, 2021)River-damming by landslides is a widespread phenomenon around the world. Recent advances in remote sensing technology and the rising commercial availability of their products enable the assemblage of increasingly more ... -
Recognizing Fracture Networks on Seismic and their Contribution to a Working Petroleum System, with Focus on the Mandal High
(Master thesis, 2014)Fracture networks within the crystalline basement are the main contributors toa promising underexplored petroleum play. Advanced technology and elevatedoil prices have triggered an interest for old prospects to be re-opened ...