Blar i Fakultet for ingeniørvitenskap (IV) på emneord "Petroleum Engineering, Drilling Engineering"
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Analysis of Kick Detection Methods in the Light of Actual Blowout Disasters.
(Master thesis, 2017)Kicks or formation fluid influxes pose persistent challenges and operational costs during drilling, workover, completion and sometimes after temporary abandonment operations. Despite of presence of variety of kick detection ... -
An Analysis on Drillstring Vibration - A novel approach to detecting Forward Synchronous Whirl
(Master thesis, 2016)Operators acknowledge the value of investment in controlling drilling dynamics. Decrease in crude oil prices limits the investment on measurement tool competences. Thus, it is necessary to address the drilling dynamics ... -
Automatic Lithology Prediction from Well Logging Using Kernel Density Estimation
(Master thesis, 2016)This thesis presents an automatic real-time analysis of lithology interpretation through a method of statistical analysis: kernel probability density method. The goal of this thesis is to develop a method for interpreting ... -
Borehole Stability: Comparing the Deviation Sensibility of Different Failure Criteria
(Master thesis, 2015)During drilling the down-hole pressure has to be sufficient enough to prevent collapse of the wellbore, while at the same time it cannot exceed the fracture limit. Borehole failure can lead to a stuck pipe situation which ... -
Cement Displacement Efficiency in Smooth and Rough Pipes - An Experimental and Theoretical Investigation
(Master thesis, 2016)Researches in the industry have always ascertained that mud channels affect the two principal objectives of primary cement job; zonal isolation and structural support. This can lead to envi- ronmentally, operationally ... -
CEMENTING THE 20 INCHES SURFACE CASING
(Master thesis, 2014)The placement of cement in annulus behind the casing is a important operation in an oil well s life. To ensure zonal isolation, the fluid in place in the annulus has to be completely displaced by the slurry. Poor excess ... -
Cuttings Bed Erosion
(Master thesis, 2017)The growth of cuttings beds in horizontal and highly inclined wells in the wellbore is one of the main problems in oil and gas industry. The main purpose of this project is to find the flow velocity at which the erosion ... -
Cuttings Bed Erosion in Horizontal Wells
(Master thesis, 2016)Many of the time consuming and economically demanding drilling problems faced today can be tracked back to poor hole cleaning, even more so when drilling through highly inclined sections. Improved hole cleaning operations ... -
Drilling fluid rheology-simulated and measured friction pressure losses from a well SS-12 in Tanzania.
(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 ... -
Dynamic Simulation of Gas Expansion in Marine Risers
(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 ... -
Error and Ellipses of Uncertainty Analysis in Far North
(Master thesis, 2017)Drilling in Barents Sea and North Sea proves to be an extremely difficult task, as these regions are situated in auroral zones having higher latitude, where, magnetic interference develop from magnetic field, magnetic ... -
Evidences of Poor Cement Displacement Jobs
(Master thesis, 2016)Cementing operation is one of the most challenging tasks in the completion phase of oil and gas wells. Many problems here are related to cement- displacement process, blending, additives, and the entire design of the ... -
Evidences of Poor Hole-cleaning or of Wellbore Instability through Hook load Response
(Master thesis, 2016)Poor hole-cleaning and wellbore instability are well-known problems during drilling operation. If they are not diagnosed in their early stage of development, they result in non-productive time (NPT). In order to reduce ... -
Experience based Technical Sidetrack
(Master thesis, 2016)Drilling is more experience-based than any other field in oil and gas industry. It involves many industry standards and regulations in order to enhance technical integrity. In addition, the best practices provide a ... -
Experience Transfer in Drilling Operations
(Master thesis, 2016)With the current economic climate most operators for deepwater drilling projects have tried to curb capital costs, particularly on drilling expenditure. Several operators have succeeded by focusing on operational improvements, ... -
Experimental design and mathematical simulation of hookload while tripping through bends.
(Master thesis, 2015)To meet the growing demand of energy consumption, oil companies are trying their best to produce oil. However, in the past few years, the oil price has kept going down and dampened the whole industry. On one side, oil ... -
Failure Characterization During Oil Well Drilling
(Master thesis, 2017)Accessing remaining oil and gas reserves around the world is getting more and more complicated and wells have to be longer, deeper and more complex in order to compensate. With an increase in well complexity comes new ... -
HeaveLock - A New System For Reduced Surge And Swab Pressure For Floating Drilling Operations
(Master thesis, 2016)Managed pressure drilling is only carried out from fixed installation in harsh environments today. Rig heave is compensated with top drive compensation system under drilling or tripping of pipe. During connections the ... -
The Impact of Shale Anisotropic Strength and Stiffness on Borehole Stability
(Master thesis, 2015)ABSTRACT Borehole instabilities is an expensive problem for the petroleum industry and most of the time, problems occur in shale. Shale is an anisotropic rock but most often it is assumed to be isotropic during borehole ... -
Improving The Efficiency Of Transportation Of Cuttings In Wellbore - Experimental Investigations On Critical Rolling And Lifting Velocities
(Master thesis, 2017)Poor hole cleaning have dire consequences and as a result, special efforts and considerations are planned in drilling operations to avoid complications or hole cleaning issues. Drillers have often been tasked by finding ...