All Outputs (19)

Geomechanical impact of bio-competitive exclusion chemical on reservoir rocks. (2023)
Thesis
PERETOMODE, E. 2023. Geomechanical impact of bio-competitive exclusion chemical on reservoir rocks. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-2571274

This study describes a novel approach known as "bio-competitive exclusion", which uses chemical nitrates as an oilfield chemical to treat reservoir souring and control the activities of sulfate-reducing bacteria. Because of its flexibility and extens... Read More about Geomechanical impact of bio-competitive exclusion chemical on reservoir rocks..

Integrated data analysis approach to select artificial lift method using machine learning. (2023)
Thesis
MAHDI, M.A.A. 2023. Integrated data analysis approach to select artificial lift method using machine learning. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-2571156

The optimisation of artificial lift (AL) selection in the oil and gas industry stands as a critical endeavour, directly impacting production efficiency, cost-effectiveness and overall operational success. Traditional AL selection methods rely on engi... Read More about Integrated data analysis approach to select artificial lift method using machine learning..

An investigation into the effectiveness of the design and enforcement of Nigeria's anti-gas flaring law and policy regimes, and the considerations of measures that could improve environmental regulatory compliance. (2022)
Thesis
MOHAMMED, J.I. 2022. An investigation into the effectiveness of the design and enforcement of Nigeria's anti-gas flaring law and policy regimes, and the considerations of measures that could improve environmental regulatory compliance. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1893017

Since the discovery of the commercial hydrocarbon deposit in 1956, activity of Nigeria's petroleum industry has dramatically increased. The industry now contributes an average of two million barrels of crude oil daily to the global oil market. Howeve... Read More about An investigation into the effectiveness of the design and enforcement of Nigeria's anti-gas flaring law and policy regimes, and the considerations of measures that could improve environmental regulatory compliance..

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..

Computational fluid dynamics modelling of multi-phase flow transition in presence of solid particles. (2021)
Thesis
ALAITA, D.A. 2021. Computational fluid dynamics modelling of multi-phase flow transition in presence of solid particles. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1603672

Multi-phase flow is the type of flow common in the oil and gas industry, as oil reservoirs contain mixtures of oil, gas and water with sand particles from sandstone reservoirs. Accurate design of oil and gas production equipment greatly depends on de... Read More about Computational fluid dynamics modelling of multi-phase flow transition in presence of solid particles..

Computational fluid dynamics modelling of fluid flow inside fractured reservoirs. (2021)
Thesis
AL-MASHHADANIE, H.A.J. 2021. Computational fluid dynamics modelling of fluid flow inside fractured reservoirs. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1603660

Fractured media exist in most layers of the earth's crust, often dominating bulk properties of subsurface geological formations. Therefore, fractured media are involved in many key engineering sectors that impact humans living on Earth. Fractured for... Read More about Computational fluid dynamics modelling of fluid flow inside fractured reservoirs..

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..

Developing a novel mechanistic model for four-phase oil-water-gas-sand stratified flow in a horizontal pipe. (2020)
Thesis
MORADI, B. 2020. Developing a novel mechanistic model for four-phase oil-water-gas-sand stratified flow in a horizontal pipe. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://openair.rgu.ac.uk

Presence of sand and solid particles in untreated petroleum sometime is inevitable. Although many techniques have been developed to prevent sand particles from entering the pipeline, such as downhole gravel packs, these downhole sand control devices... Read More about Developing a novel mechanistic model for four-phase oil-water-gas-sand stratified flow in a horizontal pipe..

A holistic approach to assessment of value of information (VOI) with fuzzy data and decision criteria. [Thesis] (2019)
Thesis
VILELA IBARRA, M.J. 2019. A holistic approach to assessment of value of information (VOI) with fuzzy data and decision criteria. Robert Gordon University [online], PhD thesis. Available from: https://openair.rgu.ac.uk

The research presented in this thesis integrates theories and techniques from statistical analysis and artificial intelligence, to develop a more coherent, robust and complete methodology for assessing the value of acquiring new information in the co... Read More about A holistic approach to assessment of value of information (VOI) with fuzzy data and decision criteria. [Thesis].

Petrophysical and geomechanical characterization of a marginal (Wabi) field reservoir in north-central Niger Delta. (2019)
Thesis
ZORASI, C.B. 2019. Petrophysical and geomechanical characterization of a marginal (Wabi) field reservoir in north-central Niger Delta. Robert Gordon University [online], MRes thesis. Available from: https://openair.rgu.ac.uk

The aim of this study is to evaluate marginal field petrophysical and geomechanical parameters, and to develop a model for analysis of geomechanical problems, in order to mitigate stress-related issues in drilling, development and reservoir managemen... Read More about Petrophysical and geomechanical characterization of a marginal (Wabi) field reservoir in north-central Niger Delta..

Chemical and physical effects of interaction between oilfield chemicals and formation rocks and integration with sand failure prediction models. (2018)
Thesis
WUYEP, E.O. 2018. Chemical and physical effects of interaction between oilfield chemicals and formation rocks and integration with sand failure prediction models. Robert Gordon University [online], PhD thesis. Available from: https://openair.rgu.ac.uk

Sand failure may result in the production of formation sand at the same time the formation fluids are being produced. Sand failure occurs when the formation stress exceeds the strength of the formation, which is derived mainly from the natural materi... Read More about Chemical and physical effects of interaction between oilfield chemicals and formation rocks and integration with sand failure prediction models..

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..

Computational fluid dynamics (CFD) modelling of critical velocity for sand transport flow regimes in multiphase pipe bends. (2016)
Thesis
TEBOWEI, R. 2016. Computational fluid dynamics (CFD) modelling of critical velocity for sand transport flow regimes in multiphase pipe bends. Robert Gordon University, PhD thesis.

The production and transportation of hydrocarbon fluids in multiphase pipelines could be severely hindered by particulate solids deposit - such as the sand particles that can accompany hydrocarbon production. Knowledge of the flow characteristics of... Read More about Computational fluid dynamics (CFD) modelling of critical velocity for sand transport flow regimes in multiphase pipe bends..

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..

Development of formation damage models for oilfield polymers. (2015)
Thesis
IDAHOSA, P.E.G. 2015. Development of formation damage models for oilfield polymers. Robert Gordon University, PhD thesis.

Polymers are among the most important of various oilfield chemicals and are used for a variety of applications in the oil and gas industry (OGI), including: water and gas shutoff; drilling mud viscosity modification; filtration loss control (FLC); sw... Read More about Development of formation damage models for oilfield polymers..

Cold heavy oil production using CO2-EOR technique. (2014)
Thesis
TCHAMBAK, E.N. 2014. Cold heavy oil production using CO2-EOR technique. Robert Gordon University, PhD thesis.

This thesis presents results of a successful simulation study using the CO2-EOR technique to enable production from an offshore heavy oil field, named here as Omega, which is located offshore West Africa at a water depth around 2000 m. The findings a... Read More about Cold heavy oil production using CO2-EOR technique..

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..

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..