Blar i Vitenskapelige publikasjoner (TN-IEP) på tittel
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Digitalization and changes to work organization and management in the Norwegian petroleum industry
(Peer reviewed; Journal article, 2023)This article analyses how implementation and use of digital technologies involve changes in work content, organization, and management in the petroleum industry. This is important, given that the industry is in a phase ... -
Downhole Temperature Modeling for Non-Newtonian Fluids in ERD Wells
(Journal article; Peer reviewed, 2018)Having precise information of fluids' temperatures is a critical process during planning of drilling operations, especially for extended reach drilling (ERD). The objective of this paper is to develop an accurate temperature ... -
Drilling data quality improvement and information extraction with case studies
(Peer reviewed; Journal article, 2020)Data analytics is a process of data acquiring, transforming, interpreting, modelling, displaying and storing data with an aim of extracting useful information, so that decision-making, actions executing, events detecting ... -
Dynamic interfacial tension measurement method using axisymmetric drop shape analysis
(Journal article; Peer reviewed, 2018-06)The current method describes a simple modification to the dynamic and equilibrium interfacial tension (IFT) measurement in a multiphase system (gas-liquid/liquid-liquid) by the Axisymmetric Drop Shape Analysis (ADSA) pendant ... -
Dynamic Performance and Control Strategies of Micro Gas Turbines: State-of-the-Art Review, Methods, and Technologies
(Peer reviewed; Journal article, 2023)The stringent energy and climate change regulations have resulted in a growing share of non-dispatchable renewable energy sources (i.e., solar and wind) in the global energy mix. This has influenced the use of fast and ... -
Early- and Late-Time Prediction of Counter-Current Spontaneous Imbibition, Scaling Analysis and Estimation of the Capillary Diffusion Coefficient
(Peer reviewed; Journal article, 2023-03)Solutions are investigated for 1D linear counter-current spontaneous imbibition (COUSI). It is shown theoretically that all COUSI scaled solutions depend only on a normalized coefficient Λn (Sn) with mean 1 and no other ... -
Effect of buoyancy and inertia on viscoplastic fluid-fluid displacements in a regular and an irregular eccentric annulus
(Peer reviewed; Journal article, 2020-09)Casing strings and liners are important subsurface structural components in petroleum and in geothermal wells. After the casing string has been run in hole, it is cemented to the formation by pumping a sequence of spacer ... -
Effect of Calcium Expansive Additives on the Performance of Granite-Based Geopolymers for Zonal Isolation in Oil and Gas Wells
(Peer reviewed; Journal article, 2023)Geopolymers have emerged as a promising alternative to Portland cement for oil and gas wells. Achieving effective zonal isolation by use of geopolymers may require controlling their expansion. This study investigates the ... -
The Effect of Different Drilling Fluids on Mechanical Friction
(Peer reviewed; Journal article, 2017)A very important aspect in highly inclined wellbores is the mechanical friction. For extended reach drilling (ERD) and through tubing extended reach drilling (TTERD) this can be a limiting factor. Friction caused by the ... -
Effect of Iron Oxide Nanoparticles on the Properties of Water-Based Drilling Fluids
(Peer reviewed; Journal article, 2020-12)In recent years, several studies have indicated the impact of nanoparticles (NPs) on various properties (such as viscosity and fluid loss) of conventional drilling fluids. Our previous study with commercial iron oxide NPs ... -
The Effect of Lost Circulation Material on Herschel-Bulkley Parameters
(Peer reviewed; Journal article, 2023)To hinder loss of drilling fluids into downhole formations while drilling geothermal, CO2 injection or petroleum wells, Lost Circulation Material (LCM) is added to the drilling fluids. These materials consist of many ... -
Effect of Organic Retarders on Fluid-State and Strength Development of Rock-Based Geopolymer
(Chapter, 2023)Granite waste is rich in aluminum and silicate has the potential of turning to geopolymer material after mixing with an alkali solution. One of the challenges in developing a geopolymer is to select a suitable retarder to ... -
The effect of PVA microfiber reinforcement on the mechanical and rheological behavior of class G oil well cement pastes
(Peer reviewed; Journal article, 2023)During the life cycle of an oil well, the annular cement sheath will be exposed to load combinations that can result in failure. To enhance the structural integrity and ductility of the cement paste, and to improve the ... -
Effect of salinity on silica nanoparticle adsorption kinetics and mechanisms for fluid/rock interaction with calcite
(Peer reviewed; Journal article, 2019-02)This study addresses the kinetics of silica nanoparticle adsorption on calcite from a solution at three salinities: deionized water (DIW), synthetic seawater (SSW), and low salinity water (LSW). The nanoparticle adsorption ... -
Effect of Salts on Interfacial Tension and CO2 Mass Transfer in Carbonated Water Injection
(Journal article; Peer reviewed, 2019-02)Carbonated water injection (CWI) is a promising enhanced oil recovery (EOR) and CO2 sequestration method, which overcomes the problems associated with CO2 EOR. CO2 mass transfer and interfacial tension (IFT) are important ... -
Effect of Silica nanoparticles on fluid/rock interactions during low salinity water flooding of chalk reservoirs
(Journal article; Peer reviewed, 2018-07)Abstract: The main objective of this work is to address the adsorption of Silica nanoparticles (NPs) dispersed in different brines on chalk surfaces and their effect on fluid/rock interaction. Isothermal static and dynamic ... -
The effect of temperature on CO2 injectivity in sandstone reservoirs
(Peer reviewed; Journal article, 2022)Carbon Capture, Utilization and Storage (CCUS) is a pragmatic technology that could reduce anthropogenic CO2 and halt climate change. CO2 injectivity is affected by several physicochemical interactions around the injection ... -
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 ... -
Effects of confinement pressure on the mechanical behavior of an oil well cement paste
(Peer reviewed; Journal article, 2021-11)Oil well cement paste is a key structural component in wells that should provide mechanical support to the casing and prevent uncontrolled flow of formation fluids along the wellbore and to the environment. Since the annular ... -
Effects of polymer adsorption on the effective viscosity in microchannel flows: phenomenological slip layer model from molecular simulations
(Journal article; Peer reviewed, 2018-10)Molecular simulations (Dissipative Particle Dynamics - DPD) were used to quantify the effect of polymer adsorption on the effective shear viscosity of a semi-dilute polymer solution in microchannel Poseuille flow. It is ...