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Drill string oscillations during connections when drilling from a semi-submersible platform
(Masteroppgave/UIS-TN-IPT/2012;, Master thesis, 2012)As the operational window is getting narrower, pressure control is becoming more important. Drilling from a semi-submersible platform can in this context offer new challenges as the top of the drill string will follow the ... -
Drill-in fluids and hydraulic fracturing characterization of lost circulation material
(Master thesis, 2021)Sodium formate and Potassium formate-based drill-in fluids were designed and characterized at the UIS lab. Moreover, Cesium/Potassium- based drill-in fluids were formulated and characterized its properties along with its ... -
Drillbotics 2016: Management of drilling incidents while drilling heterogeneous formation rocks.
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06-29)The purpose of the thesis is to analyse the abnormal incidents on the drill pipe. The reason for this research is to apply the learned theories into the reality by building an automated rig and detect the problems. Also, ... -
Drilling an ERD Well on the Statfjord Field, North Sea
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-04-05)Old platforms are not well known for extended-reach drilling (ERD) operations mainly due to rig and hydraulics limitations. ERD wells demand robust rig capabilities, good hydraulics systems, and equipment reliability. In ... -
Drilling and completion challenges in the deepwater South China Sea – a case study of the Lufeng 22-1 oilfield
(Masteroppgave/UIS-TN-IØRP/2016;, Master thesis, 2016-06)The thesis start form the introduction of the background and basic information of the deepwater operations both in the world and in South China Sea, make all the readers have a comprehensive and clear understand on the ... -
Drilling and Well - Valve usage in changing environment
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06-15)Since the oil price experienced its drastic fall summer 2014, a leaner and more cost effective oil and gas production have been an important element for oil and gas companies. This is why this paper in cooperation with ... -
Drilling data quality improvement and information extraction with case studies
(Peer reviewed; Journal article, 2020)Data analytics is a process of data acquiring, transforming, interpreting, modelling, displaying and storing data with an aim of extracting useful information, so that decision-making, actions executing, events detecting ... -
Drilling efficiency and stability comparison between Tricone, PDC and Kymera drill bits
(Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06-15)The primary object of this thesis is to analyse and optimise the drill bits performance that used to drill on the Norwegian Continental Shelf. The three different types of bits that were utilized under drilling are described ... -
Drilling Fluid Additives for Wellbore Strengthening and Reservoir Protection
(PhD Theses;726, Doctoral thesis, 2023)The objective of the research was to optimise drilling fluid additives for wellbore strengthening, preventing lost circulation and avoiding drilling fluid induced formation damage. Industry standard testing, such as HTHP ... -
Drilling in karstified carbonates
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-14)Karst cavities and depressions are collectors of various minerals, such as oil and gas, drinking and industrial waters, bauxite, various ores, phosphates, diamonds, gold and tin stone, refractory clay and many others. Of ... -
Drilling operation efficiency
(Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06-16)The petroleum industry on the Norwegian Continental Shelf is in a time with well construction time and cost as an increased challenging factor. The operators desire to discontinue this trend and are currently cutting cost. ... -
Drilling Optimisation on the Norwegian Continental Shelf: Opportunities in Well Design Practice
(Master thesis, 2018-04-17)The purpose of this thesis was to attempt to provide evidence that Norway’s drilling fraternity is long overdue for a re-think in the way it drills wells. In so doing, the author has chosen to focus on slim well drilling ... -
Drilling optimization : drill bit performance optimization using DROPS simulator ( Ekofisk/Eldfisk Field)
(Masteroppgave/UIS-TN-IPT/2010;, Master thesis, 2010)Two drilled Wells: Well A and Well B were analysed under the following input data; drilling parameter, survey data, lithology data and bit information using DROPS simulator to showcase the bit performance optimization ... -
Drilling performance on the 12 1/4'' section on Smørbukk and Smørbukk Sør in the period from year 1996 - 2014
(Master thesis, 2014-12-01)The cost of drilling wells at the Norwegian Continental Shelf (NCS) has increased drastically. This is one of the focal points both in the media and for the operating companies when it comes to the future of the NCS. For ... -
Drilling problems in depleted reservoirs
(Masteroppgave/UIS-TN-IPT/2009;, Master thesis, 2009)New oil and gas wells are becoming more challenging to drill. New technology and better understanding of new and existing reservoirs become available, pushing the envelope of what is technically possible and economically ... -
Drilling rig maintenance: an analytical study of the classification, treatment, data quality of equipment failures and related downtime
(Masteroppgave/UIS-TN-IKM/2011;, Master thesis, 2011)The aim of this thesis is to improve the way failures caused by insufficient maintenance are being managed and reported on drilling rigs and thereby reducing the overall downtime and related cost for the rigs. By looking ... -
Drilling spare parts: Identifying and evaluating critical parameters
(Masteroppgave/UIS-TN-IKM/2011;, Master thesis, 2011)Spare parts for drill rigs are a complicated and important task to be handled. The operations are run on tight schedules and costs are based on the number of days to complete the operations. There are strict regulations ... -
Drilling through the over-pressured formations on Skarv field
(Masteroppgave/UIS-TN-IPT/2014;, Master thesis, 2014-06-15)The main objective of this thesis was an investigation and of drilling operations in over-pressured formations on the J-4H/HT2 well on the Skarv field off the coast of mid-Norway. Abnormally high formation pressures on ... -
"Drink and eat, don't forget god” – decorated stoneware in a period of religious and political unrest and conflict
(Chapter; Conference object, 2023)In northern Europe, the 16th century was a period characterised by the breakthrough of the Reformation and the establishment of national states. Following the technological principles of printing and adapting the motifs ... -
Drivere for utvikling av et sikkerhetsorientert kvalitetssystem ved Kvinneklinikken - en analyse av 20 års utvikling i lys av sikkerhetsteori
(Masteroppgave/UIS-TN-IØRP/2015;, Master thesis, 2015-07-30)Bakgrunn for valg av problemstilling er min interesse for ledelse av pasientsikkerhet, og ønsket om å lære mer om hva som skal til/hvordan en kan lykkes i arbeidet med å etablere og beholde en robust organisasjon. I denne ...