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Evaluation of a nonlinear cumulative creep damage model for design applications
(Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-15)Predicting creep damage and remaining life of an engineering design is a complex task. There are many types of creep material models and they provide significantly different predictions. Furthermore, the necessary material ... -
Evaluation of a procedural standard/guideline for the execution of large & offshore projects at Blohm + Voss Repair GmbH
(Masteroppgave/UIS-TN-IØRP/2014;, Master thesis, 2014-06-16)Blohm + Voss Repair GmbH (the company), Hamburg has established a competitive name on the maritime market for repair, conversion and refit performances of cruise vessels, mega yachts and literally all kind of civil and ... -
Evaluation of a top hole full return drilling system applying a concentric dual drill string and an integrated pump
(Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-14)This thesis evaluates the possibility for a full mud return, top hole drilling system, applying a concentric dual drill string and an integrated pump. Top holes are usually drilled without mud return, leaving the cuttings ... -
Evaluation of alarm and evacuation procedures for security incidents. A case study of Equinor’s Norwegian offices
(Masteroppgave/UIS-TN-ISØP/2019;, Master thesis, 2019-06-13)Following a new threat assessment, Equinor has introduced a separate security evacuation drill once a year. From both theoretical and practical perspectives, the company faces a security trade-off. While it is crucial that ... -
Evaluation of Alkaline Sodium Silicate Gel for Reservoir In-Depth Profile Modifications to Enhance Water Sweep Efficiency in Sandstone Reservoirs
(PhD thesis UiS;221, Doctoral thesis, 2014-03)Alkaline sodium silicate (Na-silicate) is addressed to be applied for in-depth water conformance control in sandstone reservoirs containing high permeability layers. The main factors affecting the gel time, strength ... -
Evaluation of artificial lift methods on the Gyda field
(Masteroppgave/UIS-TN-IPT/2009, Master thesis, 2009)Since a production peak in 1995 the oil production on the Gyda field has decreased. Water cut is increasing and reservoir pressure is decreasing. This thesis is a study of the artificial lift methods being evaluated to ... -
Evaluation of asphaltene deposition during CO2 enhanced oil recovery
(Master thesis, 2021)Over the years carbon dioxide has been gaining immense attention. Being one of the main greenhouse gases, it contributes to the increment of the global temperature more and more significantly. Existing as a by-product of ... -
Evaluation of Ballast Failures during operations of Semi-submersible rigs
(Masteroppgave/UIS-TN-IØRP/2017;, Master thesis, 2017-06-15)Offshore drilling is an operation performed to explore for and extract hydrocarbon beneath the seabed. The drilling operation is a very sensitive and extremely risky task and can be carried out from a floating vessel, ... -
Evaluation of ballast failures during operations of semi-submersible rigs
(Peer reviewed; Journal article, 2019)Risk analysis/assessment is one of the challenges encountered during operations of offshore units on the Norwegian Continental Shelf (NCS). In recent years, the Petroleum Safety Authority (PSA) has focused on hazards ... -
Evaluation of Biogas Production Potential of Glycol-Containing Industrial Waste from Kårstø Processing Plant
(Masteroppgave/UIS-TN-IKBM/2019;, Master thesis, 2019-07-06)This research has been carried out to investigate the potential for methane gas production from untreated glycol containing industrial waste water from Kåstrø gas refinery, Tysvær Norway. Biogas methane potential (BMP) has ... -
Evaluation of biomimetic approach to drag reduction of time trial helmet using computational fluid dynamics
(Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-15)Computational fluid dynamic (CFD) using OpenFOAM are performed to investigate aerodynamics of a time trial bicycle helmet. Mesh generation by the two softwares OpenFOAM and Pointwise are compared, to detect differences ... -
Evaluation of Casing Exit Setting Depth Criteria for Whipstock
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)Baker Hughes GE has conducted several hundred whipstock operations over the last years on the NCS with a high success rate. This work will go into detail on some of the operations that were less successful, particularly ... -
Evaluation of Cellulose Nanocrystals as a Green "Smart Water" Additive in Enhanced Oil Recovery from Sandstone Reservoirs
(PhD thesis UiS;348, Doctoral thesis, 2017-06-15)Petroleum reservoir production is frequently supported by using flooding fluids, and offshore this fluid will very often be seawater. The efficiency of this water injection is affected by various factors, such as the ... -
Evaluation of DAPI direct count, computer assisted and plate count methods
(Masteroppgave/UIS-TN-IMN/2010;, Master thesis, 2010)The feasibility of using automatic counting of bacteria stained with highly specific and sensitive fluorescing DNA stain DAPI, 4',6-diamidino-2-phenylindole, and direct manual counting to enumerate both pure culture of ... -
An evaluation of different RANS turbulence models for simulating breaking waves past a vertical cylinder
(Peer reviewed; Journal article, 2021)The purpose of the present study is to evaluate the performance of different turbulence models for predicting the interaction between breaking waves and a vertical cylinder based on the volume of fluid (VOF) method. Six ... -
Evaluation of Downhole Tubing Disposal for Permanent Plug and Abandonment
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-15)A new method called Downhole Tubing Disposal developed by Oilfield Innovations for performing rigless permanent plug and abandonment is presented. Instead of pulling the production tubing, the tubing is weakened with ... -
Evaluation of Ductile Iron for Offshore Application
(Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-15)The possibility of using ductile iron as a construction material for offshore applications have been investigated. If ductile iron is considered as being a substitute material forwelded steel, it can create a larger freedom ... -
Evaluation of environmental conditions in a Norwegian fjord based on field measurements
(Master thesis, 2022)As part of the project “Ferry-free E39”, a 5 km long floating bridge is planned to be built in Bjørnafjorden to replace the existing ferry connection. The demanding nature of the fjord and the sensitivity of the bridge to ... -
Evaluation of experimental methods to determine wettability
(Masteroppgave/UIS-TN-IPT/2010;, Master thesis, 2010)Two methods to evaluate the wettability of carbonates have been investigated: Aqueous cationic surfactant solutions contact angles on oil-wet calcite crystals, and imbibition time of surfactant drops into oil-wet ... -
Evaluation of fatigue in single sided x – joint welds on Oseberg UWP
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-15)This report assesses the challenges regarding fatigue calculations on the inside of a single sided weld on the Oseberg UWP. SN – fatigue and FM – fatigue calculations are performed on two different models to establish a ...