Blar i NTNU Open på forfatter "Godhavn, John-Morten"

Viser treff 21-40 av 55

    • Drilling fluid rheology-simulated and measured friction pressure losses from a well SS-12 in Tanzania. 

      Rukonu, Daniel Charles (Master thesis, 2017)
      A study of Drilling fluid rheology-Simulated and friction pressures losses was carried in Well SS-12, Tanzania.Three rheological models were used,Such as Bingham plastic ,power law and Herschel-Bulklely model.The rheological ...

    • Drilling in Salt Formations and Rate of Penetration Modelling 

      Håpnes, Mats (Master thesis, 2014)
      As the industrialization of the world is growing, both energy consumption anddemand are steadily increasing. Hydrocarbons have been an important energyprovider for several decades, but the production from mature oil and ...

    • Drilling mud property estimator 

      Ljones, Tone (Master thesis, 2013)
      In 1969 the first petroleum discovery was made on the Norwegian continental shelf. This founding marks the beginning of what has become the most important contribution to the Norwegian economy. Advanced research within the ...

    • Drilling of Deep-set Carbonates Using Pressurized Mud Cap Drilling 

      Helgeland, Leif Rune (Master thesis, 2014)
      A majority of the easy fields have already been developed, while demand for oil and gas continues to increase rapidly. Reservoirs in deep-set carbonates contains a large amount of the worlds remaining hydrocarbons and ...

    • Dual gradient drilling simulations 

      Sigurjonsson, Kjartan Örn (Master thesis, 2012)
      The system studied in this thesis is called the Low Rise Return system and uses a partly filled marine drilling riser with a variable mud level which is used control the bottom holes pressure.Initially main components of ...

    • Dynamic Simulation of Gas Expansion in Marine Risers 

      Velmurugan, Naveen (Master thesis, 2016)
      The main objective of the work is to study the dynamic behavior of gas expansion in marine risers. In case of well control situations in deep and ultra deep waters, gas influx shows no warnings if not little, making it ...

    • Ensemble Kalman Filtering for State and Parameter Estimation on a Reservoir Model 

      Jensen, John Petter (Master thesis, 2007)
      In reservoir management it is important with reservoir models that have good predictive abilities. Since the models initially are based on measurements with high uncertainties it is important to utilize new available data. ...

    • ESP screening tool 

      Bredsten, Robin (Master thesis, 2012)
      Installing an electrical submersible pump can be a way to increase the production in a well. This report will explain some ways the electrical submersible pump can be installed and describe the different components in an ...

    • Evaluation of Early Kick Detection Systems 

      Nordvik, Joakim Rørstad (Master thesis, 2014)
      The consequence of inadequate kick detection methods can be catastrophic, last seen in the Macondo blowout in April 2010 where people were killed and large amount of oil were spread across the Gulf of Mexico. Although the ...

    • Evaluation of Vibration Mitigation Technologies - A Case Study From Operations in Norway 

      Rønning, Lise Johnsen (Master thesis, 2019)
      Stick-slip er en konsekvens av ukontrollerte, torsjonale vibrasjoner som genereres under en boreprosess og utgjør en stor risiko for de viktige aspektene ved boringen av dype brønner som effektivitet, pålitelighet, ytelse ...

    • Heave Compensated Managed Pressure Drilling: Lab Experiments 

      Phade, Anish (Master thesis, 2013)
      The world energy demand is ever increasing with every year. Oil and gas make up approximately 55% of energy sources to meet the demand. However, hydrocarbons reserves are limited and according to peak oil theory, the peak ...

    • HeaveLock - Enabling MPD On Floating Drilling Vessels 

      Steinsheim, Sondre; Von Ubisch, Petter (Master thesis, 2016)
      During drilling operations from floating drilling vessels, it is often experienced challenges related to heave motions when the rig s heave compensating system is deactivated. Rig heave movements cause the bottom hole ...

    • Lab for heave motion during Managed Pressure Drilling 

      Gjengseth, Camilla Sunde (Master thesis, 2012)
      A significant part of the world's remaining oil and gas prospects are challenging or impossible to reach by conventional methods. Examples are deep-water environments and depleted reservoirs with a narrow drilling window, ...

    • Lab For Heave Motion During Managed Pressure Drillintg 

      Svenum, Tollef-Ingebret (Master thesis, 2012)
      A significant part of the remaining oil and gas resources are present in harsh offshore environments and depleted reservoirs that are challenging to reach with conventional drilling methods. An ever increasing energy demand ...

    • Machine learning for surge modeling 

      Houseb, Emin (Master thesis, 2022)
      Den norske petroleumsindustrien er ikke bare en Norges største inntektskilder, men den er også en av verdens størse gass- og oljeleverandører i det globale markedet. Equinor opplever variasjoner i væskerate på topside (et ...

    • Managed Pressure Cementing 

      Meneses Pereira da Silva, Joao Francisco da Cunha (Master thesis, 2015)
      Managed Pressure Cementing (MPC) is a method to cement deep offshore wells in a safer, more controlled and more efficient way. It will end up being less costly because by applying managed pressure drilling (MPD) first the ...

    • Managed Pressure Cementing - Simulations of Pressure and Flow Dynamics During Cementing Using Applied Back-Pressure and Dual Gradient 

      Bekken, Øystein Seglem; Ullsfoss, Erik Havnen (Master thesis, 2017)
      Cement operations in narrow pressure windows can be challenging, due to the increased hydrostatic pressure caused by heavy-weight cement. Through managed pressure control, downhole pressure fluctuations can be controlled, ...

    • Managing pressure during underbalanced drilling 

      Råen, Jostein (Master thesis, 2012)
      AbstractUnderbalanced drilling has received more and more attention in recent years. The reason for that may be because many oil fields, especially on the Norwegian continental shelf, have started to show signs of aging. ...

    • Model Predictive Control using Genetic Algorithms 

      Gjersdal, Amalie (Master thesis, 2023)
      Model Predictive Control (MPC) er mye brukt i ulike bransjer, som i kjemiske prosesser og kraftsystemer. Det gir en effektiv kontrollstrategi for systemer med kompleks dynamikk, flere kontroll element, og begrensinger, i ...

    • MPD Heave Lab: CBHP Simulations and Hydraulic Analysis 

      Boge, Andreas Laupstad (Master thesis, 2013)
      Drilling performed from floating drilling rigs subjected to heave motion may be challenging. As the drillstring is suspended in slips during connection, the entire drillstring follows the motion of the floating rig. In ...