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Water flooding of Eldfisk reservoir cores
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)Enhanced Oil Recovery (EOR) and the effect of the aqueous chemistry on the mechanical strength of chalk have been extensively studied over the years. This is simply because the stability of the reservoir system is affected ... -
Water Hammer Induced Vibration of Steel Pipelines Repaired with FRP Composites
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-14)Since the 1990s, there has been an increasing trend to repair corroded or eroded pipelines, conveying oil, gas or water, by using fibre-reinforced polymer (FRP) composites. This relatively new repair technique involves ... -
Water induced compaction of chalks with varying non-carbonate content : the effect of Mg2+ and pH of the injected brines
(Masteroppgave/UIS-TN-IPT/2012;, Master thesis, 2012)The main objective for this study was to investigate the effect of alkaline brines on chalk, and the importance of non-carbonate content in chalk. This was done by flooding alkaline MgCl2 on Liège chalk – which has ... -
Water Injection in Wisting - importance of barrier management
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-07)A preselected Wisting well injector design has been used as a basis for this study. Because of the challenges following an ultra shallow reservoir and an almost negligible stress contrast between the reservoir and cap rock, ... -
Water quality monitoring of Madlabekken constructed wetlands
(Masteroppgave/UIS-TN-IKBM/2018;, Master thesis, 2018-06-15)As urbanized areas grow in scale, the negative impact on urban surface runoff increases. This fact creates the urge to take proper measures to control and prevent the downside effects of urbanization on natural water ... -
Water Quality Predictions Based on Grey Relation Analysis Enhanced LSTM Algorithms
(Peer reviewed; Journal article, 2022)With the growth of industrialization in recent years, the quality of drinking water has been a great concern due to increasing water pollution from industries and industrial farming. Many monitoring stations are constructed ... -
Water shut-off with polymer - core study application for the Alvheim Field
(Masteroppgave/UIS-TN-IER/2019;, Master thesis, 2019-06)This thesis is an experimental study where different polymers have been evaluated for disproportionate permeability reduction (DPR) effects. The laboratory work was performed at Norce, for Aker BP, as a part of the Master’s ... -
Water Weakening of Artificially Fractured Chalk, Fracture Modification and Mineral Precipitation during Water Injection—An Experimental Study
(Peer reviewed; Journal article, 2022-05)This experiment was designed to study the water-weakening effect of artificially fractured chalk caused by the injection of different compositions of brines under reservoir conditions replicating giant hydrocarbon reservoirs ... -
Water weakening of chalk: A mechanistic study
(PhD thesis UiS;11, Doctoral thesis, 2005)Since the detection of the Ekofisk subsidence some 20 years ago, there has been a considerable research activity concerning chalk behaviour in general, and mechanical properties particularly. Due to the importance of water ... -
Water weakening of chalks - comparsion of intact and fractured cores
(Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-06-17)Even though Chemical induced compaction on high porosity chalks has been studied extensively, little attention was given to the impacts of fractures when chalk is exposed to various flooding brines. Due to the nature of ... -
Water-based enhanced oil recovery (EOR) by “Smart Water”: optimal ionic composition for EOR in carbonates
(Journal article; Peer reviewed; Doctoral thesis, 2011)The composition of the injecting brine has a profound effect on the efficiency of water-based enhanced oil recovery (EOR) methods. Recently, we observed that not only is the concentration of the active ions Ca2+, Mg2+, ... -
Water-Based EOR in Limestone by Smart Water : A study of surface chemistry
(PhD thesis UiS;147, Doctoral thesis, 2011-12-09) -
Waterflooding of carbonate reservoirs : EOR by wettability alteration
(PhD thesis UiS;50, Doctoral thesis, 2008-05-30)Oil production is generally divided into three stages, primary recovery, secondary recovery and tertiary recovery. In primary recovery, which is usually (but not necessarily) the first production stage, the natural energy ... -
Wave energy converter
(Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)The principal objective of this thesis has been to study and research on Water Energy Convertors(WEC) devices, carrying out theoretical and analytical approximations. Nowadays, the demand of renewable energy resources is ... -
Wave Influenced Wind and the Effect on Offshore Wind Turbine Performance
(Journal article; Peer reviewed, 2014)In this paper the effect of wave influenced wind on offshore wind turbines is studied numerically. The wave is seen as a dynamical roughness that influences the wind flow and hence the wind turbine performance. An actuator ... -
Wave-equation migration velocity analysis of the successive vintages of the Sleipner Field - A detailed prediction of the mechanical effects caused by CO2 injection
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-14)Since September 1996, Statoil and partners have through their carbon capture and storage project at the Sleipner field, located in the central North Sea, injected approximately one million tons carbon dioxide per year into ... -
Weak solutions for a gas liquid model relevant for describing gas-kick in oil wells
(Journal article; Peer reviewed, 2011)The purpose of this paper is to establish a local in time existence result for a compressible gas-liquid model. The model is a drift-flux model which is composed of two continuity equations and one mixture momentum equation ... -
Weakly interacting dark matter miracle
(Bachelor thesis, 2022)Dark matter is currently actively searched for in particle physics. In this thesis the weakly interacting massive particles (WIMPs) are looked at as possible dark matter candidates. The thesis focus on the mechanism called ... -
Weather Risk In Marine Operations: An Approach For Using Risk Indicators From Offshore Environment Perspective
(Masteroppgave/UIS-TN-IØRP/2016;, Master thesis, 2016-06)The safety of marine operations is largely dependent on the weather conditions. The conditions which exist at the location of operations, during the period when the operations are planned for execution, determine the ... -
Weather sensitivity of maritime activities on Chinese Shelf
(Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013-10-03)The objective of the thesis is to discuss the weather sensitivity of maritime activities, inter alia, with respect to the aspects of passage planning, load plan-making, and ship maneuvering. As maritime activities represent ...