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Evaluating the potential of low-salinity water flooding to enhance the oil recovery in limestone reservoir
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)In this project, the potential of low salinity brine to enhance the oil recovery has been studied. Four flooding tests were conducted both on limestone cores containing anhydrite and chalk core containing no sulfate. -
Evaluating ultrasonic tomography (UT) methods used for the inspection of offshore pipelines
(Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-15)In the oil and gas industry, safe and trustable operations of a pipeline system need guidelines for operations and maintenance. These guidelines should be used to optimize the operations by improving product output and ... -
Evaluation and testing of different pre-treatment procedures for making sludge liquor suitable as a nutrient source for growth of microalgae
(Masteroppgave/UIS-TN-IMN/2010;, Master thesis, 2010)The objective for this thesis is to find a proper pre-treatment for sludge liquor for the purpose of growing microalgae in the treated solution. Sludge liquor (also called reject water) is the reject/centrate after the ... -
Evaluation of a full scale drilling simulator
(Masteroppgave/UIS-TN-IØRP/2012;, Master thesis, 2012)Nowadays, one can often hear the saying: “the easy oil is gone, the future will bring more complex and challenging wells to be drilled”. In fact, this is something the industry already is facing. Oilfields are depleting ... -
Evaluation of a method of placing cross-sectional barriers during permanent plugging of wells
(Masteroppgave/UIS-TN-IPT/2010;, Master thesis, 2010)When oil and gas wells reach the end of their production life, they need to be permanently plugged and abandoned. The requirements for a permanent barrier state that it must cover the entire cross-section of the wellbore, ... -
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 ...