In this thesis, we present a theoretical study on the current-induced nucleation and propagation of antiferromagnetic skyrmionium. A skyrmionium, also known as 2π-skyrmion, is a vortex-like magnetic structure characterized ...

We have studied a model for a non-collinear but coplanar antiferromagnetic spin texture on a two dimensional kagome lattice structure in the presence of Dzyaloshinskii-Moriya Interaction (DMI). We observed some interesting ...

Petroleum fiscal regime defines the extent to which the host government and the prospective investor can apportion risks and share project rewards. Ghana’s petroleum industry has become an attractive place for most investors ...

Successful oil and gas well drilling require hole stabilization. Barite comprised of barium sulphate is a common mineral chiefly used by oil and gas companies in their drilling operations. Barite is used in the drilling ...

Nigeria is a fast-growing country in terms of urbanization. One of the major infrastructure challenge is power supply. However, this challenge is often not as a result of power generation but as a result of power distribution. ...

The analysis of the experimental data for the air-silicone oil plug-slug transition in a 67mm id and 6m long horizontal pipe was carried out in this work. The superficial gas and liquid velocity ranged from (0.05 – 4.73) ...

Niger Delta generates higher revenues for Nigeria through its abundant oil and gas resources. The region over the years has been faced with environmental challenges resulting from oil and gas operations. This study is aimed ...

Petroleum reserves are affected either negatively or positively by the type of fiscal system and elements governing them. Governments, investors, policymakers, and other stakeholders have from the past been a victim of the ...

Numerical reservoir simulators are employed to obtain meaningful and reliable solutions for an actual case due to extreme complexity of the reservoirs systems. Wilcox formation is a reservoir in the gulf of Mexico with ...

A data-driven approach to solving the problem of excess water production was the focus of this study. In this research, several reservoir models were simulated for 26 years, and data obtained after simulation was used to ...

One of the ways of maximizing recovery from a reservoir is by drilling infill wells. Infill well placement is challenging because many well scenarios must be evaluated when undertaking the optimization program and very ...

AlSb is a semiconductor material which exist in 3D as well as 2D regimes. AlSb have a high electron mobility which is useful for application in high speed electronic devices. AlSb has potential applications in radiation ...

In the past years, several researches have been done on gas-condensate reservoir recovery performance using fully compositional simulators. Fully compositional simulators are more expensive, time consuming and have complex ...

The first part of this study discussed in details the two major model that was developed for the study of a multilayer reservoir system. They are the Dual permeability model proposed by Bourdet and the semipermeability ...

Oil reserves are now located in hard-to-reach locations. This, combined with low oil prices, makes drilling for new reserves very expensive and risky. Enhanced oil recovery, which increases the amount of oil that can be ...

Proper handling of sour gas produced is crucial to the development of sour reservoirs. Over years of research and practice, many methods of sour gas processing have been developed from the solid storage of sulfur to ...

Gas condensate reservoirs are initially discovered as single-phase gas reservoirs. As the reservoir is produced below the fluid dew-point pressure, an increase in condensate saturation in the near wellbore region occur ...

The Luteinizing Hormone-releasing Hormone (LHRH); also known as a Gonadotropin-Releasing Hormone can be utilized for targeted therapy with cytotoxic analogs, in which prodigiosin is linked to the [D-Lys6] LHRH. Our studies ...

There is a need for efficient energy storage to meet the world’s continuous demand for energy. The electrical energy storage devices available are conventional capacitors, electrochemical supercapacitors, batteries and ...

Barite is an exceptional non-metallic mineral composed of barium sulphate and it is used mainly by the oil and gas industry as drilling mud in deep drilling, where high pressure is encountered. The specific gravity of ...