Browsing NTNU Open by Author "Pavlov, Alexey"
Now showing items 21-40 of 62
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Design, Implementation and Optimization of an Autonomous Miniature Rig for Directional Drilling
Helgeland, Henrik; Solberg, Mikaela; Alvarez, Luis (Master thesis, 2022)Digitale løsninger og automatiserte prosesser revolusjonerer mange sektorer, inkludert olje- og gassindustrien. Siden 2016 har DSATS og SPE arrangert Drillbotics konkurransen for å engasjere studenter til å løse utfordringer ... -
Design, Implementation and Optimization of an Autonomous Miniature Rig for Directional Drilling
Solberg, Mikaela; Helgeland, Henrik; Alvarez, Luis (Master thesis, 2022)Digitale løsninger og automatiserte prosesser revolusjonerer mange sektorer, inkludert olje- og gassindustrien. Siden 2016 har DSATS og SPE arrangert Drillbotics konkurransen for å engasjere studenter til å løse utfordringer ... -
Design, Implementation and Optimization of an Autonomous Miniature Rig for Directional Drilling
Helgeland, Henrik; Solberg, Mikaela; Alvarez, Luis (Master thesis, 2022)Digitale løsninger og automatiserte prosesser revolusjonerer mange sektorer, inkludert olje- og gassindustrien. Siden 2016 har DSATS og SPE arrangert Drillbotics konkurransen for å engasjere studenter til å løse utfordringer ... -
Disturbance Rejection by Feedback Control in Offshore Drilling: Experimental Results
Albert, Anders; Aamo, Ole Morten; Godhavn, John-Morten; Pavlov, Alexey (Journal article; Peer reviewed, 2014)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 ... -
Dither signal optimization for multi-agent extremum seeking control
Silva, Thiago Lima; Pavlov, Alexey (Chapter, 2020)In this paper we formulate and solve the problem of multi-agent extremum seeking with dither signals optimization. The solution is a distributed perturbation-based extremum-seeking controller with an additional objective ... -
Dither signals optimization in constrained multi-agent extremum seeking control
Silva, Thiago Lima; Pavlov, Alexey (Peer reviewed; Journal article, 2021)In this paper we consider the problem of optimization of a multi-agent system with constraints through perturbations-based extremum seeking control. We demonstrate that for such systems, effects of dither signals applied ... -
DrillFeel - Haptic Feedback for Enhancing Drillers Situational Awareness
Ødegård, Olav (Master thesis, 2023)Offshore drilling er en risikofylt operasjon med potensielt dødelige konsekvenser hvis et system svikter eller operatøren mister situasjonsbevisstheten og derfor gjør feil. Dagens løsninger for drilling og boring innebærer ... -
Drilling Fluid Measurements
Steinsheim, Kristin (Master thesis, 2020)Strømningsmålinger er en viktig del av boreprosessen. Hensikten med målingene er prosessoptimalisering, monitorering av operasjoner og opprettholding av sikkerhet. Denne masteroppgaven er todelt. Første del handler om ... -
Drilling in Karstified Carbonates: Early Risk Detection Technique
Maksimov, Danil; Pavlov, Alexey; Sangesland, Sigbjørn (Peer reviewed; Journal article, 2020)Heterogeneous nature and complex rock properties of carbonate reservoirs makes the drilling process challenging. One of these challenges is uncontrolled mud loss. Caves or a system of cavities could be a high-risk zone for ... -
Embedded Model Predictive Control for an Electric Submersible Pump on a Programmable Logic Controller
Binder, Benjamin Julian Tømte; Kufoalor, Kwame Minde; Pavlov, Alexey; Johansen, Tor Arne (Journal article, 2014)Electric Submersible Pumps (ESPs) can be installed in oil wells to create artificial lift, in order to increase recovery from the reservoir, and boost the production rate. A Model Predictive Controller (MPC) for an ESP, ... -
Estimation of Bottomhole Pressure for Managed Pressure Drilling: Comparison of Nonlinear Estimators
Løvik, Pål Skønberg (Master thesis, 2011)To avoid hole stability problems in an increasingly fierce drilling environment, the demand for accurate control of the pressure profile during drilling operations is rising. As standard instrumentation of drilling rigs ... -
Fault diagnosis of downhole drilling incidents using adaptive observers and statistical change detection
Willersrud, Anders; Blanke, Mogens; Imsland, Lars Struen; Pavlov, Alexey (Journal article; Peer reviewed, 2015)Downhole abnormal incidents during oil and gas drilling cause costly delays, and may also potentially lead to dangerous scenarios. Different incidents will cause changes to different parts of the physics of the process. ... -
Formation Control of Underactuated Marine Vehicles with Communication Constraints
Børhaug, Even; Ghabcheloo, Reza; Pavlov, Alexey; Pettersen, Kristin Ytterstad; Pascoal, Antonio; Silvestre, Carlos (Journal article, 2006)In this paper, we propose a nonlinear coordination control scheme for formation control of a group of underactuated marine vehicles with communication topology constraints. In particular, we propose decentralized control ... -
In-transit cargo transfer between ships
Veksler, Aleksander Vladimirovitsj (Master thesis, 2009)Cargo transfer between two vessels at sea requires the ramp connection between the vessels to be as stable as possible. The complex nature of the system makes employing control methods difficult. This thesis explores two ... -
Micro-Testing While Drilling for Rate of Penetration Optimization
Nystad, Magnus; Pavlov, Alexey (Chapter, 2020)The Rate of Penetration (ROP) is one of the key parameters related to the efficiency of the drilling process. Within the confines of operational limits, the drilling parameters affecting the ROP should be optimized to drill ... -
Micro-Testing While Drilling for Rate of Penetration Optimization: Experiments and Simulations
Nystad, Magnus Edvard; Aadnøy, Bernt Sigve; Pavlov, Alexey (Peer reviewed; Journal article, 2021)The rate of penetration (ROP) is one of the key parameters related to the efficiency of the drilling process. Within the confines of operational limits, the drilling parameters affecting the ROP should be optimized to drill ... -
Modeling and Control for Managed Pressure Drilling from Floaters: Heave Compensation by Automatic Nonlinear Control
Landet, Ingar Skyberg (Master thesis, 2011)Managed pressure drilling is a sophisticated pressure control method which is intended to meet increasingly high demands in drilling operations in the oil and gas industry. With this method, the well is pressurized and the ... -
Modeling and Control of Heave-Induced Pressure Fluctuations in Managed Pressure Drilling
Landet, Ingar Skyberg; Pavlov, Alexey; Aamo, Ole Morten (Journal article; Peer reviewed, 2013)Automatic managed pressure drilling is an advanced pressure-control method which is intended to meet the increasingly high demands in drilling operations in the oil and gas industry. In this method, the circulating drilling ... -
Modellering, simulering og regulering av hydraulisk transmisjonssystem for vindturbiner
Gregusson, Robert Neander (Master thesis, 2008)Conventional wind turbines are built with a mechanical transmission system, and all components are therefore situated on top of the wind turbine. By replacing the mechanical drive shaft and gear with a hydraulic transmission ... -
Nondisturbing extremum seeking control for multi-agent industrial systems
Haring, Mark A. M.; Fossøy, Synne; Silva, Thiago Lima; Pavlov, Alexey (Peer reviewed; Journal article, 2022)Industrial applications of extremum seeking control (ESC) can be a hit and miss affair. Although a gain in performance can be achieved, the dither applied to excite the system causes unwanted fluctuations in the performance ...