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Real-time monitoring of cement sheath integrity under high-angle HPHT wellbore conditions. (2023)
Thesis
WILCOX, L.B. 2023. Real-time monitoring of cement sheath integrity under high-angle HPHT wellbore conditions. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-2071847

The lengthy time span over which the cemented well needs to retain its integrity is a massive challenge today. The cement plugs in abandoned wells, in conjunction with the annular cement sheath, need to prevent leakages well beyond the life of the we... Read More about Real-time monitoring of cement sheath integrity under high-angle HPHT wellbore conditions..

Cuttings transport and hydraulics optimisation for underbalanced drilling (UBD) operations in concentric and eccentric, directional and extended reach wells. (2022)
Thesis
SALUBI, V. 2022. Cuttings transport and hydraulics optimisation for underbalanced drilling (UBD) operations in concentric and eccentric, directional and extended reach wells. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1893048

Underbalanced drilling facilitates the effective control of wellbore pressures - amongst several other important advantages - when compared to conventional drilling technology. However, this involves the flow of multiphase fluids, which introduces ad... Read More about Cuttings transport and hydraulics optimisation for underbalanced drilling (UBD) operations in concentric and eccentric, directional and extended reach wells..

Development of an optimised integrated underbalanced drilling strategy for cuttings transport in gas-liquid flow through wellbore annuli. (2022)
Thesis
MAHON, R. 2022. Development of an optimised integrated underbalanced drilling strategy for cuttings transport in gas-liquid flow through wellbore annuli. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1880278

Although understanding the relationship between gas-liquid two-phase fluid flows and the effects of the major drilling variables is critical to optimising underbalanced drilling (UBD) operations, to date, this has been an area of limited research and... Read More about Development of an optimised integrated underbalanced drilling strategy for cuttings transport in gas-liquid flow through wellbore annuli..

Stuck pipe prediction in deviated wellbores: a numerical and statistical analysis. (2022)
Thesis
EGBE, P.I. 2022. Stuck pipe prediction in deviated wellbores: a numerical and statistical analysis. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-2071873

Due to the significant non-productive times and recovery costs associated with stuck pipe events in oil and gas drilling operations, there is value in being able to predict an impending stuck pipe event. To achieve this, the use of numerical cuttings... Read More about Stuck pipe prediction in deviated wellbores: a numerical and statistical analysis..

An investigation of casing structural integrity in shale gas horizontal wells during hydraulic fracturing using FEA and machine learning algorithms. (2021)
Thesis
MOHAMMED, A.I. 2021. An investigation of casing structural integrity in shale gas horizontal wells during hydraulic fracturing using FEA and machine learning algorithms. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1603216

Unconventional oil and gas operators are currently facing the challenge of casing lateral buckling and/or deformation during shale gas wells stimulation through hydraulic fracturing. Failure of the casing during this process can lead to huge financia... Read More about An investigation of casing structural integrity in shale gas horizontal wells during hydraulic fracturing using FEA and machine learning algorithms..

Numerical and experimental study of the impact of temperature on relative permeability in an oil and water system. (2021)
Thesis
BALOGUN, Y. 2021. Numerical and experimental study of the impact of temperature on relative permeability in an oil and water system. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1357866

Relative permeability is affected by several flow parameters, predominantly operating temperature and fluid viscosity. Fluid viscosity changes with temperature, which correspondingly affects the relative permeability. Temperature is believed to have... Read More about Numerical and experimental study of the impact of temperature on relative permeability in an oil and water system..

Harnessing the regulatory framework for compliance with environmental regulations in the hydrocarbon sector in Nigeria. (2020)
Thesis
BASSEY, D.E. 2020. Harnessing the regulatory framework for compliance with environmental regulations in the hydrocarbon sector in Nigeria. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://openair.rgu.ac.uk

Over the past five decades, Nigeria has witnessed immense ecological disaster arising from unsustainable environmental exploitation of its natural resource. Evidence can be seen from the oil and gas sector. Oil and gas activities in the Niger Delta r... Read More about Harnessing the regulatory framework for compliance with environmental regulations in the hydrocarbon sector in Nigeria..

Uncertainty reduction in reservoir parameters prediction from multiscale data using machine learning in deep offshore reservoirs. (2020)
Thesis
ARIGBE, O.D. 2020. Uncertainty reduction in reservoir parameters prediction from multiscale data using machine learning in deep offshore reservoirs. Robert Gordon University [online], PhD thesis. Available from: https://openair.rgu.ac.uk

Developing a complete characterization of reservoir properties involved in subsurface multiphase flow is a very challenging task. In most cases, these properties - such as porosity, water saturation, permeability (and their variants), pressure, wetta... Read More about Uncertainty reduction in reservoir parameters prediction from multiscale data using machine learning in deep offshore reservoirs..

Accurate AVO modelling and reservoir characterisation of the upper cretaceous deepwater reservoirs in the Vøring Basin. (2017)
Thesis
CHALMERS, B. 2017. Accurate AVO modelling and reservoir characterisation of the upper cretaceous deepwater reservoirs in the Vøring Basin. Robert Gordon University, MPhil thesis.

In an exploration setting, reservoir characterisation is concerned with the identification of fluids and lithology. Seismic interpreters seek to distinguish hydrocarbons from brine and sand from shale. Amplitude vs offset (AVO) is a fundamental techn... Read More about Accurate AVO modelling and reservoir characterisation of the upper cretaceous deepwater reservoirs in the Vøring Basin..

Gas-condensate flow modelling for shale gas reservoirs. (2016)
Thesis
LABED, I. 2016. Gas-condensate flow modelling for shale gas reservoirs. Robert Gordon University, PhD thesis.

In the last decade, shale reservoirs emerged as one of the fast growing hydrocarbon resources in the world unlocking vast reserves and reshaping the landscape of the oil and gas global market. Gas-condensate reservoirs represent an important part of... Read More about Gas-condensate flow modelling for shale gas reservoirs..

Geomechanically coupled modelling of fluid flow partitioning in fractured porous media. (2015)
Thesis
SANAEE, R. 2015. Geomechanically coupled modelling of fluid flow partitioning in fractured porous media. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-2048927

Naturally fractured reservoirs are characterised with complex hydro-mechanical dynamics. In these reservoirs, hydrocarbons can be stored and produced from the rock matrix, the fracture network, or both. Normally the fracture network is depleted much... Read More about Geomechanically coupled modelling of fluid flow partitioning in fractured porous media..

Design and real-time process optimisation of steam assisted gravity drainage for improved heavy oil recovery. (2013)
Thesis
BALI, A.B. 2013. Design and real-time process optimisation of steam assisted gravity drainage for improved heavy oil recovery. Robert Gordon University, PhD thesis.

Introduction to the Canadian Oil Sands, Canadas Oil Sand Industry: An Overview, Heavy Oil Technologies, and so many other topics about heavy oil have become the hotcakes in the oil industry. A number of new projects are in Execute phase for the devel... Read More about Design and real-time process optimisation of steam assisted gravity drainage for improved heavy oil recovery..

Modeling multiphase solid transport velocity in long subsea tiebacks: numerical and experimental methods. (2013)
Thesis
BELLO, K.O. 2013. Modeling multiphase solid transport velocity in long subsea tiebacks: numerical and experimental methods. Robert Gordon University, PhD thesis.

Transportation of unprocessed multiphase reservoir fluids from deep/ultra-deep offshore through a long subsea tieback/pipeline is inevitable. This form of transportation is complex and requires accurate knowledge of critical transport velocity, flow... Read More about Modeling multiphase solid transport velocity in long subsea tiebacks: numerical and experimental methods..

Situation awareness approach to context-aware case-based decision support. (2012)
Thesis
NWIABU, N.D. 2012. Situation awareness approach to context-aware case-based decision support. Robert Gordon University, PhD thesis.

Context-aware case-based decision support systems (CACBDSS) use the context of users as one of the features for similarity assessment to provide solutions to problems. The combination of a context-aware case-based reasoning (CBR) with general domain... Read More about Situation awareness approach to context-aware case-based decision support..

Modelling of fines migration mechanisms in high permeability sands: impact on reservoir performance. (2009)
Thesis
AL-MUFARJI, S. 2009. Modelling of fines migration mechanisms in high permeability sands: impact on reservoir performance. Robert Gordon University, MPhil thesis.

Today the oil and gas industry suffers significant production losses due to fines migrations in high permeability sandstone formations or sand packs. During drilling, production or injection, fines migration continues to cause formation impairment re... Read More about Modelling of fines migration mechanisms in high permeability sands: impact on reservoir performance..

Intelligent grain size profiling using neural network and application to sanding potential prediction in real time. (2007)
Thesis
OLUYEMI, G.F. 2007. Intelligent grain size profiling using neural network and application to sanding potential prediction in real time. Robert Gordon University, PhD thesis.

Production of hydrocarbon from both consolidated and unconsolidated clastic reservoir rocks poses a risk of sand production especially if a well articulated programme of sand management strategy is not put in place to deal with the problem at the ons... Read More about Intelligent grain size profiling using neural network and application to sanding potential prediction in real time..