Blar i NTNU Open på forfatter "Godhavn, John-Morten"
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Optimal Drilling and Completion of Deep ERD Wells
Bue, Christian (Master thesis, 2013)In this Master Thesis well design for deepwater ERD wells have been reviewed. These wells present new challenges for the industry, which creates high demands for well design and materials. The constant push for deeper ... -
Optimal Reservoir control using nonlinear MPC and ECLIPSE
Meum, Patrick (Master thesis, 2007)Recent years advances within well deployment and instrumentation technology offers huge potentials for increased oil recovery from reservoir production. Wells can now be equipped with controllable valves at reservoir depth, ... -
Pipeline Liquid Control using Nonlinear MPC and OLGA: Optimal Utilization of Available Liquid Buffer Volume during Pipeline Transients
Torpe, Håvard (Master thesis, 2007)Pipelines with multiphase flow will exhibit large and highly nonlinear liquid rates during transients caused by changes in production rate. This requires either a large separator (slug catcher) downstream, capable of ... -
Potential of Real-Time Use of Dynamic Drilling Models
Brasøygård, Mads Johan (Master thesis, 2011) -
Practical Aspects and Value of Accurate and Reliable Kick Detection during Connection
Abdullahi, Umar Numan (Master thesis, 2016)Based on reviewed available kick detection techniques, It was found pertinent the design of a model that seeks to detect kicks (via monitoring of volumetric changes during transient periods). This model will be based on ... -
Significant surge and swab offshore Brazil induced by rig heave during drillpipe connections
Godhavn, John-Morten; Olorunju, B; Gorski, Dmitri; Kvernland, Martin Krister; Sant'Ana, Mateus; Aamo, Ole Morten; Sangesland, Sigbjørn (Peer reviewed; Journal article, 2021)In this paper, we describe measured and simulated downhole pressure variations (“surge and swab”) during drillpipe connections when drilling an ultradeepwater well offshore Brazil on Bacalhau (former Carcará) Field. Floating ... -
Simulating Underbalanced Drilling: Development of a GUI flow simulator to evaluate UBD operations for aerated fluids and foams
Leirkjær, Rune Sørflaten (Master thesis, 2014)As more oil fields mature, new methods are required to be able to drill additional wells without damaging thereservoir and to limit pressure related drilling problems. This can in most cases be solved by drillingunderbalanced, ... -
Simulations of Dual Gradient Drilling: Analytical and Theoretical Studies of tripping- and pressure trapping operations when using Dual Gradient Drilling in deep waters
Gaup, Tarald Husevåg (Master thesis, 2012)To cover the world’s future consume of hydrocarbons, technological improvements are needed, turning currently unreachable and unprofitable reservoirs into the opposite. The main focus of this thesis, Dual Gradient Drilling ... -
Statistical Analysis of Rheological characterization of Water-based Drilling Fluids
Rye, Ole Julius (Master thesis, 2017)Of fundamental importance in drilling technology is the drilling fluid. It has to counter varying wellbore conditions, and still be able to fulfil its objectives like suspension and transport of solids, pressure control ... -
Suppressing Pressure Oscillations in Offshore Drilling: Control Design and Experimental Results
Albert, Anders; Aamo, Ole Morten; Godhavn, John-Morten; Pavlov, Alexey (Journal article, 2015)As oil exploration and development costs rise, the oil industry increases its efforts to improve oil recovery (IOR) from existing fields. IOR is achieved mainly by drilling more wells, but drilling in partially depleted ... -
Surge and Swab Simulations
Talleraas, Kristina Marcelie Holen (Master thesis, 2019)Det er nye tider i energisektoren og det er stort fokus på optimal olje- og gassutvinning. Samtidig som verden ønsker å bevege seg i en miljøvennligretning mot mindre utslipp, er vi i stor grad fremdeles avhengige av olje ... -
Using MPC for Managed Pressure Drilling
Møgster, Johannes; Godhavn, John-Morten; Imsland, Lars Struen (Journal article; Peer reviewed, 2013)As production on the Norwegian shelf enters tail production, drilling wells with vanishing pressure windows become more attractive. This motivates use of automatic control systems for improved control of downhole pressure ... -
Utilization of Planning and Design Data in Drilling Automation and Model Based Process Control on Statfjord
Toft, Runar Eike (Master thesis, 2013)Drilling of oil wells has through time become increasingly difficult due to less accessible oil and depleted reservoirs. Well stability issues and other drilling problems are frequently experienced during drilling of ... -
Verification of downhole choke technology in a simulator using data from a North Sea well
Kvernland, Martin Krister; Gorski, Dmitri; Sant'Ana, Mateus; Godhavn, John-Morten; Aamo, Ole Morten; Sangesland, Sigbjørn (Journal article; Peer reviewed, 2019)The most important contributer to Improved Oil Recovery (IOR) on mature fields is drilling of infill wells. Managed Pressure Drilling (MPD) and Continuous Circulation System (CCS) techniques can be used for improved control ... -
Well Control Aspects of Riserless Drilling
Mostovoy, Evgeny (Master thesis, 2013)This master thesis has investigated feasibility of effective well control in riserless drilling. An attempt was undertaken to design a realistic model of riserless well using advanced multiphase simulation tool and evaluate ...