Blar i Vitenskapelige publikasjoner (TN-IEP) på emneord "VDP::Teknologi: 500"
Viser treff 41-60 av 107
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Effect of Zn2+ and K+ as Retarding Agents on Rock-Based Geopolymers for Downhole Cementing Operations
(Peer reviewed; Journal article, 2022)Geopolymer material has a potential to function alongside Portland Cement as an efficient cementitious material for well cementing and plug and abandonment applications. Geopolymer material requires retarding agents to be ... -
Emission Mitigation and Energy Security Trade-Off: Role of Natural Gas in the Indian Power Sector
(Peer reviewed; Journal article, 2021-06)India’s Nationally Determined Contributions (NDC) aim to increase the share of non-fossil fuel, especially renewables, in power generation. But at the same time, it mentions that coal is likely to dominate the power ... -
Enabling Increased Delithiation Rates in Silicon-Based Anodes through Alloying with Phosphorus
(Peer reviewed; Journal article, 2022)The capability of battery materials to deliver not only high lithium storage capacity, but also the ability to operate at high charge/discharge rates is an essential property for development of new batteries. In the present ... -
Energy, exergy and environmental analysis of a novel combined system producing power, water and Hydrogen
(Peer reviewed; Journal article, 2017)During last years, absorption heat transformers have been used widely for boosting low-grade heat sources. In this paper, a novel multi-generation system including an open absorption heat transformer (OAHT), an organic ... -
Estimation of shear rate change in vertically oscillating non-Newtonian fluids: Predictions on particle settling
(Peer reviewed; Journal article, 2020)This study investigates the effect of oscillatory motion on velocity and shear rate change within different non-Newtonian, slightly viscoelastic fluids oscillated in a vertical U-shaped circular pipe. An estimation to ... -
Experimental Bench-Scale Study on Cuttings-Bed Erosion in Horizontal Wells
(Peer reviewed; Journal article, 2022)Cuttings-beds formation while drilling wellbores is a common challenge, especially for horizontal wells, as drilled particles have higher area to be deposited and form cuttings-beds, which can cause several problems such ... -
Experimental Evaluation of the Effect of Temperature on the Mechanical Properties of Setting Materials for Well Integrity
(Peer reviewed; Journal article, 2022)A fundamental understanding of the mechanical properties of zonal isolation materials is important for predicting well integrity during well operation conditions. Conventionally, the mechanical properties of zonal isolation ... -
Experimental investigation of laminar and turbulent displacement of residual oil film
(Peer reviewed; Journal article, 2023-11)Residual oil films on pipe walls are a common occurrence in industrial processes, and their presence can significantly impact system efficiency and performance. However, the mechanisms that govern oil film removal by an ... -
Experimental Investigation of the Mechanisms of Salt Precipitation during CO2 Injection in Sandstone
(Peer reviewed; Journal article, 2019)Deep saline reservoirs have the highest volumetric CO2 storage potential, but drying and salt precipitation during CO2 injection could severely impair CO2 injectivity. The physical mechanisms and impact of salt precipitation, ... -
Fixed type-oscillating water column front wall angle variation and impact on chamber performance: CFD numerical wave tank assessment
(Peer reviewed; Journal article, 2023)This study investigates optimizing the front wall geometry of an Oscillating Water Column (OWC) chamber to enhance turbine performance and output efficiency when harnessing energy from progressive waves with consistent ... -
Fundamentals and physical principles for drilled cuttings transport – Cuttings bed sedimentation and erosion
(Peer reviewed; Journal article, 2021)The increasing necessity of challenging wellbore structures and drilling optimization for improved hole cuttings cleaning has been growing along time. As a result, operator companies have been researching and applying ... -
Gel Pills for Downhole Pressure Control during Oil and Gas Well Drilling
(Peer reviewed; Journal article, 2020)During drilling of petroleum or geothermal wells, unforeseen circumstances occasionally happen that require suspension of the operation. When the drilling fluid is left in a static condition, solid material like barite may ... -
Hole cleaning and wet-granular rheology of rock cutting beds: Impact of drilling fluid composition
(Peer reviewed; Journal article, 2022)Cuttings-beds formation is an issue that must be considered during all wellbore drilling operations. This problem increases at highly deviated or horizontal wells, where cuttings removal efficiency becomes one of the most ... -
Holistic management of a smart city thermal energy plant with sewage heat pumps, solar heating, and grey water recycling
(Peer reviewed; Journal article, 2023)This article introduces a modern thermal energy plant consisting of sewage heat pumps, a biogas boiler, thermal solar collectors, and grey water recycling. It further discusses advanced methods to achieve energy efficiency ... -
Hydraulic Behavior in Cased and Open Hole Sections in Highly Deviated Wellbores
(Chapter, 2019)In this paper we present results from flow loop experiments with an oil-based drilling fluid with micronized barite as weight materials. The use of micronized barite allows using lower viscosity drilling fluid, providing ... -
Hydrogen Safety Considerations: Mitigating Risks and Securing Operations in Enclosed Spaces
(Peer reviewed; Journal article, 2023)The increased interest in hydrogen as a versatile and environmentally friendly energy carrier has led to its recognition as a potential solution for addressing environmental concerns and challenges associated with transitioning ... -
A Hydrogen-Fueled Micro Gas Turbine Unit for Carbon-Free Heat and Power Generation
(Peer reviewed; Journal article, 2022)The energy transition with transformation into predominantly renewable sources requires technology development to secure power production at all times, despite the intermittent nature of the renewables. Micro gas turbines ... -
Improving distribution system state estimation with synthetic measurements
(Peer reviewed; Journal article, 2021)Distribution state estimation is a desired feature of modern power systems. The availability of measurements from smart meters has opened the door to extend the application of state estimation techniques down to end ... -
Interfacial Dynamics of Miscible Displacement of Shear-Thinning Fluid in a Vertical Channel
(Peer reviewed; Journal article, 2023)Abstract The displacement of a shear-thinning fluid by a denser and less viscous Newtonian fluid in a vertical duct is investigated using experiments and numerical simulations. We study how shear-thinning and increased ... -
Invasion of CaCO3 particles and polymers into porous formations in presence of fibres
(Peer reviewed; Journal article, 2022)Formation damage can occur through migration of drilling fluid particles and polymers into porous formations. A methodology for assessing formation damage was applied to measure invasion of CaCO3 and polymers into porous ...