Browsing NTNU Open by Author "Pavlov, Alexey"
Now showing items 1-20 of 64
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A Framework for Fault Diagnosis in Managed Pressure Drilling Applied to Flow-Loop Data
Willersrud, Anders; Imsland, Lars Struen; Pavlov, Alexey; Kaasa, Glenn-Ole (Journal article; Peer reviewed, 2013)Data from a medium-scale horizontal flow loop test facility is used to test fault diagnosis in managed pressure drilling. The faults are downhole incidents such as formation influx, fluid loss, drillstring washout, pack-off, ... -
Algal colonization of young arctic sea ice in spring
Kauko, Hanna Maria; Olsen, Lasse Mork; Duarte, Pedro; Peeken, Ilka; Granskog, Mats A.; Johnsen, Geir; Fernández-Méndez, Mar; Pavlov, Alexey; Mundy, Christopher John; Assmy, Philipp (Journal article; Peer reviewed, 2018)The importance of newly formed sea ice in spring is likely to increase with formation of leads in a more dynamic Arctic icescape. We followed the ice algal species succession in young ice (≤ 0.27 m) in spring at high ... -
Analysis and Control of an Intervention AUV with Modified System Parameters
Sandø, Øyvind Andreas (Master thesis, 2008)This report deals with a fully actuated underwater vehicle equipped only with thrusters to produce control forces. The issue addressed is the case where the vehicle picks up an object which is to be transported to another ... -
AUTOMATED PATTERN RECOGNITION IN REAL-TIME DRILLING DATA FOR EARLY KARST DETECTION
Maksimov, Danil; Løken, Marius Alexander; Pavlov, Alexey; Sangesland, Sigbjørn (Chapter, 2021)Drilling in carbonate formations often poses a real challenge to operators, contractors and service companies. Severe fluid losses, gas kicks and other unwanted situations increase drilling risks. These risks are closely ... -
Automatic Start-up and Control of Artificially Lifted Wells
Rønning, Rasmus (Master thesis, 2011)Artificial lift in oil wells using a downhole pump has received much attentionthe last decades and is established as a reliable and efficient liftingmethod. In particular, artificial lift using an electric submersible ... -
Automatic System Optimization of Gas-Lifted Wells Using Extremum-Seeking Control
Elverhaug, Vegard (Master thesis, 2018)Gas lift optimization is a common artificial lift method, where gas is injected into the well to lower the hydrostatic pressure column of the fluid in the tubing. Subsequently, the bottom hole pressure will also be lowered, ... -
Automation and autonomous systems: Human-centred design in drilling and wells
Johnsen, Stig Ole; Holen, Siri Mariane; Aalberg, Asbjørn Lein; Bjørkevoll, Knut Steinar; Evjemo, Tor Erik; Johansen, Gorm Idar; Myklebust, Thor; Okstad, Eivind Halvard; Pavlov, Alexey; Porathe, Thomas (Research report, 2021)This report is based on an assignment commissioned by the Petroleum Safety Authority Norway (PSA) with the theme of human-centred design and human-machine interfaces in the development and implementation of autonomous ... -
Data-driven derivative-free trust-region model-based method for resource allocation problems
Andersen, Joakim Rostrup; Imsland, Lars Struen; Pavlov, Alexey (Peer reviewed; Journal article, 2023)Allocating a limited available resource between a set of units is a problem that arises in several application areas. We propose an online derivative-free trust-region model-based method to tackle a fairly general version ... -
Data-Driven Optimization of Multiple Gas-Lifted Wells by Using Extremum Seeking Control
Parulian, Todo Pangeran (Master thesis, 2023)Denne oppgaven utforsker anvendelsen av Extremum Seeking Control (ESC) for å optimalisere gassløfteoperasjoner i olje- og gassindustrien. Gassløft er en mye brukt kunstig løftemetode som øker produksjonshastigheten til ... -
Derivative-free trust region optimization for robust well control under geological uncertainty
Silva, Thiago Lima; Bellout, Mathias; Giuliani, Caio M.; Camponogara, Eduardo; Pavlov, Alexey (Peer reviewed; Journal article, 2022)A Derivative-Free Trust-Region (DFTR) algorithm is proposed to solve the robust well control optimization problem under geological uncertainty. Derivative-Free (DF) methods are often a practical alternative when gradients ... -
Design and Construction of an Autonomous, Miniature Drilling Rig - Contribution to the DrillboticsTM Competition 2017
Lescoeur, Astrid; Olsen, Martin Aagaard; Vasantharajan, Mayuran; Egeland, Runa Linn (Master thesis, 2017)The Society of Petroleum Engineers' (SPE) sub-committee DSATS (Drilling System Automation Technical Section) has, the last two years, organized a student competition in an effort to accelerate the uptake of automation in ... -
Design and Development of an Automatic Control System for Well Control Using a Logitech G29 Steering Wheel
Hashemi, Ali (Master thesis, 2024)DrillFeel-prosjektet har som mål å forbedre brønnkontrolloperasjoner i boreindustrien ved å integrere avanserte kontrollsystemer med taktile tilbakemeldingsteknologier. Ved å bruke Logitech G920 ratt, en forbrukergrad ... -
Design and Implementation of a Minitature Rig for Autonomous and Directional Drilling
Hånsnar, Gaute; Gjersdal, Benedicte; Skretting, Trygve Mikal Viga (Master thesis, 2021)Denne avhandlingen presenterer arbeidet gjort av tre petroleumsstudenter og en kybernetikkstudent for å representere Norges Teknisk Naturvitenskapelig Universitet (NTNU) i den internasjonale borekonkurransen "Drillbotics". ... -
Design and Implementation of a Minitature Rig for Autonomous and Directional Drilling
Hånsnar, Gaute; Skretting, Trygve Mikal Viga; Gjersdal, Benedicte (Master thesis, 2021)Denne avhandlingen presenterer arbeidet gjort av tre petroleumsstudenter og en kybernetikkstudent for å representere Norges Teknisk Naturvitenskapelig Universitet (NTNU) i den internasjonale borekonkurransen "Drillbotics". ... -
Design and Implementation of a Minitature Rig for Autonomous and Directional Drilling
Hånsnar, Gaute; Gjersdal, Benedicte; Skretting, Trygve Mikal Viga (Master thesis, 2021)Denne avhandlingen presenterer arbeidet gjort av tre petroleumsstudenter og en kybernetikkstudent for å representere Norges Teknisk Naturvitenskapelig Universitet (NTNU) i den internasjonale borekonkurransen "Drillbotics". ... -
Design and Implementation of an Autonomous Miniature Drilling Rig for Directional Drilling
Azam, Muhammad Umer (Master thesis, 2019)Denne rapporten viser arbeidet gjort av NTNU-laget under andre fase av Drillbotics. Drillbotics er ein internasjonal borekonkurranse som blir arrangert av DSATS for femte år på rad i 2019, der universitetsstudentar vert ... -
Design and Implementation of an Autonomous Miniature Drilling Rig for Directional Drilling
Montoza, Juan Manuel (Master thesis, 2019)Denne rapporten viser arbeidet gjort av NTNU-laget under andre fase av Drillbotics. Drillbotics er ein internasjonal borekonkurranse som blir arrangert av DSATS for femte a ̊r pa ̊ rad i 2019, der universitetsstudentar ... -
Design and Optimization of a Miniature Autonomous Drilling Rig - Contribution to the Drillbotics Competition 2018
Handeland, Alexander Særsten (Master thesis, 2018)Drillbotics is an international drilling competition hosted by DSATS for the fourth consecutive year, arranged to accelerate advancement in drilling automation. NTNU was one of nine universities that based on a design ... -
Design and Optimization of a Miniature Autonomous Drilling Rig - Contribution to the Drillbotics Competition 2018
Turøy, Per Øystein (Master thesis, 2018)Drillbotics is an international drilling competition hosted by DSATS for the fourth consecutive year, arranged to accelerate advancement in drilling automation. NTNU was one of nine universities that based on a design ... -
Design and Optimization of a Miniature Autonomous Drilling Rig - Contribution to the Drillbotics Competition 2018
Knoop, Sebastian (Master thesis, 2018)Drillbotics is an international drilling competition hosted by DSATS for the fourth consecutive year, arranged to accelerate advancement in drilling automation. NTNU was one of nine universities that based on a design ...