Blar i Department of Petroleum Engineering på tittel
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Use of Probability Management in E&P Portfolio Analysis
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-15)Capital investment decisions are a critical decision that every organization must take in a careful manner to optimize its resources. In the industry driven by uncertainty such as upstream petroleum industry, it becomes ... -
The use of sea water tracer as a tool for history matching of the Statfjord Fm simulation model
(Masteroppgave/UIS-TN-IPT/2010;, Master thesis, 2010)In this study, the Statfjord Fm reservoir simulation model was set up to track injected sea water. The sea water itself thereby forms a tracer in the simulation model. This sea water tracer was included with the intent ... -
Use of successive pressure build-up test data from well A-1 H in the Snadd field to obtain dynamic reservoir information
(Masteroppgave/UIS-TN-IPT/2015;, Master thesis, 2015-07)Well A-1 H in the Snadd field was put on test production at the beginning of 2013. Since then, a series of pressure build-up tests has been conducted. These aimed to allow the evaluation of the quality of the Lysing prospect ... -
Use of ultrasonic and acoustic sensors for characterization of liquid-particle flow and evaluation of hole cleaning efficiency
(Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06-16)The transportation of solids by suspension can cause severe damage to pipelines and infrastructures if not handled correctly. An adequate system for monitoring multiphase flow can be used to get early indications of erosion ... -
Using differential pressure and image processing for cuttings transportation measurements
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-15)Dynamic aspects of liquid-particle flow were investigated through frequency analysis of pressure gradients and image processing of particle flow patterns. Experiments were conducted in a medium-scale flow loop with a ... -
Using machine learning to identify flow regimes from capacitance sensor data
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06-29)In this thesis the k-means clustering and a neural network is developed and used to classify capacitance data from multi phase flow in a horizontal tube. Theoretical background for the unsupervised machine learning ... -
Using plasma technology to remove scale from production tubing
(Master thesis, 2016-06)With its wide application in areas such as electronics, the car-, machine- and tool-making industries, energy technology, the optics industry, and textile, environmental, and medical technology, plasma technology is ... -
Utilization of Purpose-Built Jack-Up Units for Plug and Abandonment Operations
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-07)The oil and gas industry working on the Norwegian continental shelf have the past years increased the focus on decommissioning of fields, after several years with attention to increase and enhance oil recovery. The topic ... -
Utilizing down hole data, acquired by a multiple sensor down hole tool, to determine the PDC bit wear state.
(Masteroppgave/UIS-TN-IPT/2008;, Master thesis, 2008)By using real-time data from INTEQ`s CoPilot Real-Time Drilling Optimalization a search for dependable indications of the degree of the bit wear was done. This would improve decision making procedures for when to pull the ... -
Validation of the LedaFlow software applied to the well flow cases
(Masteroppgave/UIS-TN-IPT/2012;, Master thesis, 2012-06)In recent years, there have been rapid advances in the field of transient multiphase simulators due to the fact that they have proven to be accurate and reliable for the vast majority of cases in the oil and gas industry. ... -
Water and surfactant flooding at different wettability conditions
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)In a surfactant flooding of oil reservoirs, surfactant products are added to the injected water to reduce the oil-water interfacial tension (IFT) and thereby mobilize capillary trapped oil. The theory in classic surfactant ... -
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 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-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 ... -
Well collapse modeling & Norne & Heidrun well instability sensitivity studies
(Masteroppgave/UIS-TN-IPT/2015;, Master thesis, 2015-06-15)Well collapse is a typical wellbore instability problem in brittle shale and unconsolidated formations. In this thesis, the thermal, chemical, mechanical, hydraulic, elastic and transient effects on the well collapse ...