Blar i Department of Energy and Petroleum Engineering (TN-IEP) på tittel
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Prediction, interpolation and extrapolation of drilling data with Deep Learning
(Doctoral thesis, 2022-11)Directional drilling is an established technology within the petroleum industry. In this traditionally conservative and risk averse environment application of artificial intelligence encounters difficulties at various ... -
Predictive accuracy of data-driven solutions to the transient response of the drilling system
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-07-15)One of the utmost desires of the drilling industry is full drilling automation to minimize well construction cost, optimize well performance and many other advantages. Dynamical system modeling and control of complex systems ... -
Pressure Build-Up in Closed Wells During Kick Migration and Fluid Compressibility Effects
(Chapter, 2022)If a kick is migrating in a closed well, this will lead to pressures building up in the well. It has earlier been shown that for Non-Newtonian fluids, suspension effects will make it impossible to deduce a unique gas ... -
Prevention of loss of drilling fluids and formation damage when drilling through high permeability formations
(Bachelor thesis, 2023)In order to avoid kicks and the potential for a well blowout, it is necessary to maintain the drilling fluid pressure above the pore pressure of the formation. However, doing so may result in fluid loss due to the fluid ... -
Probabilistic Portfolio Modeling in Python
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-14)The portfolio selection problem has been known for centuries. However, Markowitz (1952) was the first to introduce a robust framework for optimized portfolios on financial markets. Later this approach was applied in the ... -
Problem and models of multicriteria decision making and risk assessment of the arctic offshore oil and gas field development
(Peer reviewed; Journal article, 2019)The article is devoted to the systematic solution of problems of multi-criteria assessment and the possibility of implementing projects for the development of hydrocarbon deposits on the Arctic shelf under conditions of ... -
Project Portfolio Optimization in a Changing Energy Landscape
(Master thesis, 2021)Portfolio analysis and optimization has for the past several decades been applied in the oil & gas industry for asset allocation with the goal of maximizing corporate value creation. More recently, the traditional task of ... -
Project Portfolio Optimization in a Changing Energy Landscape
(Studentoppgave/UIS-TN-IEP/2020;, Master thesis, 2020-06-15)Portfolio analysis and optimization has for the past several decades been applied in the oil & gas industry for asset allocation with the goal of maximizing corporate value creation. More recently, the traditional task of ... -
Promoting effect of Fe on supported Ni catalysts in CO2 methanation by in situ DRIFTS and DFT study
(Peer reviewed; Journal article, 2020-12)Bimetallic NiFe catalysts have emerged as a promising alternative to the traditional Ni catalysts for CO2 methanation. However, the promoting effect of Fe on the bimetallic catalysts remains ambiguous. In this study, a ... -
Pump pressure manipulation during MPD connection
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06-14)Over time the remaining oil prospects are becoming harder to drill and managed pressure drilling is a tool that can be used to reach target depth in depleted reservoirs or similar narrow margin scenarios. In any narrow ... -
Qualification of the Cementitious Material Rock-based Geopolymer in Permanent Plug & Abandonment
(Master thesis, 2022)When an oil & gas well proves not to be economically favourable anymore, or is technically inviable, the well has served its life and are due to be shut-down and sealed, also referred to as permanent plug & abandonment. ... -
Rayleigh and Wood anomalies in the diffraction of acoustic waves from the periodically corrugated surface of an elastic medium
(Peer reviewed; Journal article, 2016)By the use of the Rayleigh method we have calculated the angular dependence of the reflectivity and the efficiencies of several other diffracted orders when the periodically corrugated surface of an isotropic elastic medium ... -
Reactive flow in chalk at reservoir temperature – Experiment and simulation
(Bachelor thesis, 2021)This thesis seeks to study how 0.219 M MgCl2 brine flooded through chalk cores at reservoir temperatures will chemically react when flooded through at various flowrates. We used two different chalk cores. The cores were ... -
REAL-TIME DATA DRIVEN ROP AND TORQUE MODELLING AND OPTIMIZATION USING MACHINE LEARNING
(Master thesis, 2021)Obtaining the maximum rate of penetration (ROP) is one of many techniques to reduce cost and Non-Productive Time (NPT) in drilling wells. Many parameters affect ROP, including hole cleaning, tooth wear, etc. The study was ... -
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 ... -
Recent Advances in Green Synthesis and Modification of Inorganic Nanomaterials by Ionizing and Non-Ionizing Radiations
(Peer reviewed; Journal article, 2020-08)Alternative to conventional Joule heating, radiation in the forms of electromagnetic waves and particle beams offers a promising route to energize the green synthesis and modification of nanomaterials with high time ... -
Recent developments in hole cleaning technology in deviated well bores for geothermal and petroleum
(Bachelor thesis, 2022)This paper is looking on recent developments in hole cleaning technologies and how recent advancements can be used to aid efficient hole cleaning in deviated wells. Successful hole cleaning relies upon integrating optimum ... -
Recent Progress in Two-Dimensional Materials for Electrocatalytic CO2 Reduction
(Peer reviewed; Journal article, 2022)Electrocatalytic CO2 reduction (ECR) is an attractive approach to convert atmospheric CO2 to value-added chemicals and fuels. However, this process is still hindered by sluggish CO2 reaction kinetics and the lack of efficient ... -
Recent technology development in solvent-free electrode fabrication for lithium-ion batteries
(Peer reviewed; Journal article, 2023-07)Electrodes for commercial lithium-ion batteries (LiBs) are typically manufactured with slurry-casting (SC) procedure. The high cost and limited energy density caused by SC procedure impede new emerging application. Developing ...