Blar i Institutt for geovitenskap og petroleum på tittel
Viser treff 39-58 av 2652
-
A better Horizon Auto Tracker - Powered by Machine Learning
(Master thesis, 2018)Computer-assisted horizon interpretation on 3D seismic data has been commercially available for almost 15 years. The process is generally referred to as 3D horizon autotracking and is a powerful method when interpreting ... -
A Case Study of How MPD Techniques Can Be Used to Adapt to Uncertain Pore and Fracture Pressure Gradients
(Master thesis, 2014)This thesis aims to identify the potential and limitations of using Managed Pressure Drilling (MPD) in deepwater fields where narrow and unpredictable mud weight windows are encountered. A significant effort has been done ... -
A Comparative Analysis of Rheological Characteristics of Polymer Solutions Exposed to Temperature and Stress Over Time
(Master thesis, 2017)A series of experiments with thixotropic fluids composed of polymers and salt, with various temperatures and in circulation was carried out to examine how it influenced the current polymers decompositioning. The results ... -
A Comparative Simulation Study of Chemical EOR Methodologies (Alkaline, Surfactant and/or Polymer) Applied to Norne Field E-Segment
(Master thesis, 2011)Primary and Secondary Recovery techniques together are able to recover only about 35-50% of oil from the reservoir. This leaves a significant amount of oil remaining in the reservoir. The residual oil left after the water ... -
A Comparative Simulation Study of Chemical EOR Methods Applied to the Norne E-Segment Using Eclipse 100
(Master thesis, 2014)Secondary recovery techniques such as waterflooding are often used to maintain pressure during depletion. Still, unfavorable mobility ratios, reservoir heterogeneity and strong capillary forces may cause a waterflood alone ... -
A Comparison of Analytical and Experimental Procedures to Verify a Lumped Drill String Element Model
(Master thesis, 2016)A study of axial vibrations in a vertical drill string is conducted using a spring-mass-damper model with n coupled elements. The main motivation behind this is to describe the axial vibrations using a simple mathematical ... -
A comparison of the deep structure of the Mid-Norwegian margin and the South China Sea, based on seismic interpretation
(Master thesis, 2020)Rifted basins are now an important type of basin that produces petroleum, especially in Atlantic margin. The study of rifting process is important for the petroleum prospecting. In this study, we focus on the Mid-Norwegian ... -
A comprehensive investigation on the performance of durian rind as a lost circulation material in water based drilling mud
(Journal article; Peer reviewed, 2018)Oil and gas operators worldwide are expecting service companies to deliver integrated techniques to minimize, if not prevent, drilling problems. Drilling fluids perform vital functions to ensure the success of drilling ... -
A Computational Tool for Simulation and Modeling of Integrated Petroleum Production Systems
(Master thesis, 2024)Gjennom masterarbeidet har et beregningsverktøy for simulering og modellering av integrerte petroleumsproduksjonssystemer blitt utviklet. Beregningsverktøyet er tilgjengeliggjort som en webapplikasjon. Webapplikasjonen har ... -
A coupled wellbore-reservoir modelling approach to showcase the effect of CO2 injection on flow behavior in a saline aquifer
(Master thesis, 2024)Karbonfangst og -lagring er i framgang som en løsning for å redusere mengden karbondioksid (CO2) i atmosfæren, som regnes som hovedårsaken til global oppvarming. For å trygt lagre CO2 på et potensielt sted over en lang ... -
A discussion of continental lithospheric stretching models and comparison with interpreted 2D seismic data of the Viking Graben of the northern North Sea
(Master thesis, 2019)Riftmarginer markerer overgangen fra et kontinent til hav, og inneholder en oversikt over dets rifthistorie i arkitekturen. Ikke all rifter vil imidlertid utvikles til stadiet for skorpeseparering, men stanse før de når ... -
A dynamic analysis of in-situ stress state at the Upper Tamakoshi Hydroelectric Project area
(Journal article; Peer reviewed, 2018)The in-situ stress condition in the rock mass is influenced by both tectonic and geological environment such as faulting and shearing in the rock mass. This influence is of considerable magnitude in the Himalayan region ... -
A dynamic stress state analysis at the pressure tunnel of Upper Tamakoshi HPP, Nepal
(Chapter, 2018)In theory, in-situ stress state of an area of concern is mainly governed by gravity-induced stress, tectonic ac-tivity and topographic condition of that area. The tectonic and geological environment such as faulting and ... -
A FEASABILITY STUDY OF EXTENDED REACH WELL, VARG 15/12-A-11 A
(Master thesis, 2011)This report is an analysis of an extended reach drilling (ERD) well planned to be drilled from Varg A to the Rev East reservoir in the North Sea. It is a continuation on the torque and drag (T&D) analysis “Torque and Drag ... -
A flexural isostasy model for the Pleistocene evolution of the Barents Sea bathymetry
(Journal article; Peer reviewed, 2017)The topographic relief of the Barents Sea was subjected to major changes during the past 1.5 million years mostly due to sediment redistribution driven by glacial activity. This paper addresses the problem of Pleistocene ... -
A Geochemical and Petrological Analysis of the Klemetsaunet Rhyodacite, Central Norwegian Caledonides; Unraveling the Rock's Origin, Mineral Alteration, and Deformation Patterns.
(Master thesis, 2023)Klemetsaunet ryodacitten er en av tre felsiske intrusjoner som ble dannet i oseansk skorpe for om lag 481 ± 5 millioner år siden. Studieområdet ligger i de nordlige delene av Bymarka-ofiolitten i Trondheim, Norge, og er ... -
A Laboratory Approach to Investigating Wellbore Instability in Shale during Drilling
(Doctoral thesis at NTNU;2015:233, Doctoral thesis, 2015)Abstract: Over the past few years, laboratory efforts have been increasingly directed towards developing methods to understand more of the wellbore dynamics during drilling, particularly in weak shale. Hollow cylinder ... -
A low frequency deghosting method: Analysis and numerical tests
(Journal article; Peer reviewed, 2017)The low-frequency component of seismic data can be beneficial for several reasons: improved signal penetration into the earth, enhanced resolution, and better constrained inversion results. We have developed a detailed ... -
A Lumped Multi-element Model for Analysing the Effects of the Top Drive Mass and the Drill Line Elasticity
(Master thesis, 2021)Heisespillet i boreta ̊rnet har enda ikke blitt inkludert i de eksisterende multi-element mod- ellene for aksielle vibrasjoner av borestrengen. Eksperimentelle resultater tyder derimot pa ̊ at heisespillet kan ha en effekt ... -
A Machine Learning Approach for Net Pay Estimation from Borehole Image Logs
(Master thesis, 2020)In the realm of hydrocarbon exploration, net pay estimation is essential for the economic calculation and valuation of the field. By definition, net pay is the reservoir interval with economically producible hydrocarbons ...