Browsing Institutt for geovitenskap og petroleum by Title
Now showing items 1195-1214 of 2584
-
Implementation of Particle Swarm Optimization Algorithm within FieldOpt Optimization Framework - Application of the algorithm to well placement optimization
(Master thesis, 2017)In the present work, particle swarm optimization algorithm is applied in well placement optimization problem using FieldOpt, a software framework that aims at being common platform for field development optimization. ... -
Implementation of Trust-region Algorithm for Well Placement Optimization in FieldOpt Framework
(Master thesis, 2017)Oil field development is a challenging engineering task that involves optimization problems such as the types, numbers, scheduling, location, and controls of wells. Optimization algorithm is the keyfactor for optimization ... -
Implications of Gas Hydrates in Drilling and Completion A Scientific Root Cause Analysis of the Deepwater Horizon Disaster
(Doctoral theses at NTNU;2020:119, Doctoral thesis, 2020)On April 20, 2010 eleven men lost their lives in the explosion and fire on Deepwater Horizon. Previous investigations have assumed that the experienced drilling crew must have missed a cumulative gain of about 1 000 barrels ... -
The importance of trace element analyses in detrital Cr-spinel provenance studies: An example from the Upper Triassic of the Barents Shelf
(Peer reviewed; Journal article, 2021)Investigations of sandstone provenance often involve U–Pb dating and chemical/mineralogical investigations of detrital minerals that are stable in sediments. As most stable detrital minerals are from felsic–intermediate ... -
Importance of water Influx and waterflooding in Gas condensate reservoir
(Master thesis, 2014)The possibility of losing valuable liquid and lower gas well deliverability have made gas condensate reservoirs very important and extra emphasizes are made to optimize hydrocarbon recovery from a gas condensate reservoir. ... -
Improved Burst Model for Casing and Tubing Design
(Master thesis, 2018)Casing and tubing design for burst are performed by requiring a safety margin against yield under internal overpressure. Today's design process uses design limit plots, consisting of Barlow's and the approximate von Mises ... -
Improved Casing Collapse Prediction with a Case Study of Asset Life Extension
(Master thesis, 2017)The current industry accepted standards of predicting collapse strength of casings are pessimistic and inaccurate. With wells being drilled ever deeper, high strength pipes are required in order to comply with rules and ... -
Improved Constraint on Salt Geometry in the Southern Nordkapp Basin - Modeling salt geometry using potential field data integrated with traditional reflection seismic and well data.
(Master thesis, 2017)The Nordkapp Basin is a characteristic graben feature in the Western Barents Sea affected by multiple episodes of passive and active diapirism. The salt structures make the Nordkapp Basin an interesting area for studying ... -
Improved design of unlined air cushion surge chambers
(Peer reviewed; Journal article, 2021)An overview of important design considerations for unlined air cushion surge chambers is given and three innovative solutions that can enable a safer and more economic design are presented. The paper is based on information ... -
Improved drilling process through the determination of hardness and lithology boundaries
(Master thesis, 2012)The main objective of drilling a well is the potential economic profit. The total cost of a drilling operation result from a complex interplay of many factors (Graham and Muench, 1959). Work that can optimize some of these ... -
An improved model for predicting liquid loading onset in inclined pipes with non-uniform liquid wall films
(Peer reviewed; Journal article, 2021)Liquid loading is a phenomenon in which liquid accumulates in the wellbore of mature gas wells, causing a significant reduction in production and sometimes permanent well abandonment. This paper introduces a new model for ... -
Improved Oil Recovery by Polymer, Surfactant and Low Salinity Water Flooding Applied for Gullfaks field (Statfjord-I1 Segment) Based on applied Reservoir Simulation.
(Master thesis, 2018)Most of the energy used all over the world come from fossil fuel in which hydrocarbons which are non-renewable sources of energy contribute in large percent. Recently most of oil fields are tertiary phase of recovery. As ... -
Improved Petrophysical Evaluation of a Thinly Bedded Oil and Gas Bearing Reservoir, Using Triaxial Resistivity and Nuclear Magnetic Resonance Well Logging Measurements
(Master thesis, 2016)The aim of this thesis was to conduct a petrophysical analysis on a laminated thin bedded reservoir from well 7220/8-1, containing gas in the upper section. A conventional analysis was done in advance, in order to create ... -
Improved Reservoir Drainage Strategy through Characterization:A Case Study of Mnazi Bay Gas Field in Tanzania
(Master thesis, 2018)Reservoir management is a significant aspect in petroleum that aims at optimizing the hydrocarbons recovery. It involves establishing the development and depletion strategies, numerical models for production and reserves ... -
Improving Cementing Practices for Top Hole Casing Strings at the Valhall Field.
(Master thesis, 2014)The main goal of a primary cement job is to provide zonal isolation in the well. Obtaining zonal isolation according to regulations at the Valhall field have been challenging. The complex overburden at Valhall contains ... -
Improving interpretation of complex subsalt structures by integrated modelling. An example from the Barents Sea
(Master thesis, 2018)The geological evolution of the Barents Sea is very complex, due different styles of deformation at different times it passed through. The Barents Sea developed through compressional tectonics during Ediacaran Timanian ... -
Improving Performance on Gazela Field Fox Jacket Wells - Analysis of the Injectors and Producers Wells
(Master thesis, 2015)The following report analysing one of the jacket in Gazela field is located offshore of Cabinda province, that has combination of 8 produceres wells and 4 injectors wells. To achieve it production and injection data ... -
Improving The Efficiency Of Transportation Of Cuttings In Wellbore - Experimental Investigations On Critical Rolling And Lifting Velocities
(Master thesis, 2017)Poor hole cleaning have dire consequences and as a result, special efforts and considerations are planned in drilling operations to avoid complications or hole cleaning issues. Drillers have often been tasked by finding ... -
Improving the Rheological and Mechanical Properties of Oil Well Cement Slurries Using Multiple Chemical Admixtures for Enhancing Zonal Isolation: A Laboratory Evaluation
(Journal article; Peer reviewed, 2022)The study uses chemical and mineral admixtures to understand the critical processes affecting the cement slurry characteristics, including rheological properties, free water, compressive strength, and thickening time. Using ... -
Improving Volumetric Sweep Efficiency by Optimizing Viscous-Gravity Forces in Water-Miscible Gas Injection
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:102, Doctoral thesis, 2014)Water-alternating-gas injection is an enhanced oil recovery method that has been used for many years. Field applications of this method had good performance and the recovery factor was quite promising in the majority of ...