Blar i Department of Energy and Petroleum Engineering (TN-IEP) på tittel
Viser treff 1-20 av 572
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A comparison of working stress design and reliability based casing design
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-15)Working stress design is the most common design method used on the Norwegian continental shelf and its simplicity makes it easy to understand. However, other methods as the reliability based design gives a different view ... -
A comprehensive experimental investigation of MWCNTs in oil-well cementing and the development of a new empirical model for UCS estimation
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06-15)Cement is the primary barrier in oil and gas wells and the NORSOK D-010 Standard have very specific requirements for said cement. Amongst others, it states that cement should be impermeable, ductile, strong and resistant ... -
A decision support system for multi-target geosteering
(Journal article; Peer reviewed, 2019-12)Geosteering is a sequential decision process under uncertainty. The goal of geosteering is to maximize the expected value of the well, which should be defined by an objective value-function for each operation. In this paper ... -
A Hierarchy of Non-Equilibrium Two-Phase Flow Models
(Journal article; Peer reviewed, 2019-10)We review and extend a hierarchy of relaxation models for two-phase flow. The models are derived from the non-equilibrium Baer–Nunziato model, which is endowed with relaxation source terms to drive it towards equilibrium. ... -
A Novel Approach to Qualifying Bismuth as a Barrier Material
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-12)The barrier material conventionally used for permanent P&A is cement. Since two barriers are a requirement to properly isolate potentially flowing formations, the reliability of the barriers could be enhanced by introducing ... -
A pore-to-core scale investigation of hysteresis for CO2 storage processes using a discrete-domain method
(Master thesis, 2022)In this thesis we have studied a discrete-domain method that is implemented to demonstrate the immiscible, two-phase displacements of two fluids, namely CO2 and water (or brine) in an originally water-saturated reservoir ... -
A Review of Sustained Casing Pressure in Offshore Wells - Mechanisms, Diagnosis and Remediation
(Bachelor thesis, 2021)Sustained casing pressure (SCP) has in the later years received increased attention. SCP is the result of gas migration through failed or degraded well barriers manifesting at the wellhead as annular pressures that cannot ... -
A Riemann solver for the Drift-Flux Flow Model
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)In this thesis we present a method for calculating exact solutions to a system of equations for two phase flow. This solution is valid for a special case of initial condition called the Riemann problem. The system consists ... -
A Risk Based Approach for Calculating Barrier Lengths
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-07)NORSOK D-010 and other standards gives a fixed length of cement for permanently plugging of wells. These lengths are not based on scientific research, but on old practice. A fixed length leads to a shift in focus from where ... -
A risk-based study of safety barriers in multicultural work environments
(Masteroppgave/UIS-TN-ISØP/2019;, Master thesis, 2019-06-14)11 of 13 studies show that foreign employees are about 1,6 to 13 times more often injured in occupational accidents compared to Norwegian employees. Even though, both national and non-national employees are involved in ... -
A Study of the Effect of Pressure and Temperature on the Mechanical Friction of Four Different Fluids Using a Specially Designed Setup
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)The mechanical friction caused by the contact between the rotating drillstring and the borehole or casing can lead to significant challenges such as excessive torque and drag, limitation in running speed of drillstring and ... -
A Study of the Effects of High Dogleg Severity on Well Casing.
(Master thesis, 2023)The Wisting Field located offshore Norway in the Barents Sea is considered a very challenging field to be developed and produced. Its location in the ice-covering sea in the high North with limited or no sunlight combined ... -
A Three-Phase Model for Tumor Cell Migration
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06)Flow of interstitial fluid (IF) has proven to have a significant effect on the migration of cancer cells through tissue due to the tumor cells ability to sense flow by secreting chemokines that convect in the flow direction ... -
A Widespread Review of Smart Grids Towards Smart Cities
(Journal article; Peer reviewed, 2019-11)Nowadays, the importance of energy management and optimization by means of smart devices has arisen as an important issue. On the other hand, the intelligent application of smart devices stands as a key element in establishing ... -
A Widespread Review of Smart Grids Towards Smart Cities
(Journal article; Peer reviewed, 2019-11)Nowadays, the importance of energy management and optimization by means of smart devices has arisen as an important issue. On the other hand, the intelligent application of smart devices stands as a key element in establishing ... -
Accounting for Model Error in Probabilistic History Matching to Improve Uncertainty Quantification
(Master thesis, 2022)Model Error in probabilistic history matching is an important topic to study, but calculating the model error is a challenge since the truth is uncertain. In this thesis, sources of model error will be discussed briefly; ... -
Accuracy of Condensate to gas ratio (CGR) based on fluid sampling analyses.
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-15)ABSTRACT Accuracy of condensate to the gas ratio (CGR) is one of the most significant issues in the petroleum industry. In this study, Ormen Lange field was the case study for checking the accuracy of CGR based on ... -
Adaptive mesh refinement in locally conservative level set methods for multiphase fluid displacements in porous media
(Peer reviewed; Journal article, 2023)Multiphase flow in porous media often occurs with the formation and coalescence of fluid ganglia. Accurate predictions of such mechanisms in complex pore geometries require simulation models with local mass conservation ... -
Adsorption of basic crude oil components onto carbonate chalk surfaces – effect on initial wettability.
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06-14)The initial wetting of carbonate reservoirs is of great importance to the overall oil recovery and smart water processes. Crude oil is a complex mixture of organic components, and the polar components present in it can ... -
Adsorption of Crude Oil Components onto Carbonate and Sandstone Outcrop Rocks and Its Effect on Wettability
(Peer reviewed; Journal article, 2021-03)The processes of establishing and altering reservoir wettability are still subjects of discussion due to the complexity of the underlying crude oil–brine–rock interactions. This study was aimed at investigating the ...