ABSTRACT 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 fuel cells. The electrode materials play an important role in improving the efficiency of energy storage systems such as batteries and electrochemical supercapacitors. The electrochemical supercapacitors have power densities greater than those of batteries, energy d...
ABSTRACT Materials selection is done regarding to the availability, cost and performance of the candidates. In buildings, cement is the material that is widely used, even though it is releases co2 (estimated about 7% of the worldwide production of co2). There is therefore a need to look for new materials that are more environmental friendly. Prior research on earth-based materials has shown that termite soil may serve as an alternative to cements in the stabilization of building materials. T...
ABSTRACT 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) m/s and (0.05 – 0.473) m/s respectively. The transition from plug to slug flow was investigated by increasing the superficial gas velocity at fixed superficial liquid velocity. For the investigated experimental data set, the intermittent flow was observed at the...
ABSTRACT This work aimed at using processed cassava leaves to pack cyanide mild steel (MS) under different treatment conditions and investigating the wear properties of the pack cyanided mild steel (PCMS). Pack cyaniding (PC) of a MS was achieved using processed cassava leaves powder with BaCO3 as energizer in the heat treatment process. Four different powder particle sizes were utilized at four different temperatures (750oC, 800oC, 850oC and 900oC) and soaked for 3 hours. In this present wo...
Abstract Uncertainty analysis of flow performance predictions involves identifying significant reservoir parameters impacting the flow response. Uncertainty analysis often requires conducting large number of reservoir simulation runs. In this work, experimental design theory (DoE), Response Surface Methodology (RSM) and numerical simulation were integrated to reduce the number of simulations and simplify the optimization process. Various investigators have applied DoE/RSM to approximate a co...
ABSTRACT New sources of energy should be found to relieve the high demand of energy. Even though heavy oil and bitumen are difficult to produce due to their high viscosity which can be reduced by heating, with increased oil price, the production of these heavy oils are seen viable thus the need for a model that would help make predictions for the future and also take into consideration areal and vertical sweep of hydrocarbons (3D simulator). The ability to be able to optimize the interaction...
ABSTRACT 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 to evaluate the environmental impact of the oil and gas exploration and production on the socioeconomic life of the inhabitants of the Niger Delta. The data and analysis presented in this study relied solely on secondary data from past studies and reports from bo...
ABSTRACT Clastic reservoirs may be heterogeneous and exhibit lateral and vertical variations in porosity and permeability. Therefore, the spatial distribution of the petrophysical properties within the reservoirs is important to provide a reliable reservoir description. An improved understanding of clastic reservoirs has led to more detailed reservoir description by flow unit delineation. In this study, six active wells which cut across zone D3000 in the Tertiary Niger Delta clastic reservoi...
ABSTRACT Methanol is normally used in the oil and gas industries for inhibiting gas hydrate. Before use, the methanol is normally stored in tanks often made of carbon steels and stainless steels, and these tanks are prone to corrosion when exposed to methanol. Many investigations have been carried out by researchers to understand the phenomenon of stress corrosion cracking (SCC) in ethanol. Very few investigations have, however, been carried out on methanol stress corrosion cracking. Even th...
ABSTRACT 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 difficulties of the reserve recognitions. This has influenced investment decisions as well as affected the attractiveness of the project. By the use of economic indicators for analysis, the host government will be able to design an efficient fiscal system and the ...
ABSTRACT The need to re-develop one of the Brown fields located in the Niger Delta area of Nigeria was necessitated by the fact that there are still three undeveloped reservoirs in the field. A total of six stacked reservoirs, A100 to A600 (all oil bearing with associated gas) were penetrated between 8552 ftss and 10652 ftss by APV-1 well. Reservoir blocks A200 and A600 are the largest in the field accounting for 77% of the total field STOIIP. The well was completed with a Two String Multipl...
ABSTRACT 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 reinjecting the sour gas back into producing or depleted light oil reservoir for miscible flooding enhanced oil recovery. This paper seeks to investigate the use of sour gas to enhance oil recovery and its associated phase behavior problems. In designing a miscible gas f...
ABSTRACT This work is aimed at studying activated carbons as supercapacitor electrode materials derived from plant biomass waste materials. The activated carbon raw materials are sourced from coconut shell, pine cone and rice husk plant biomass. The chemical activation route is employed with KOH as an activating agent. The carbonization temperature used is 800 oC and the carbonization time is varied from 1 h to 5 h. Activated carbon of high surface area and porosity are achieved and their el...
ABSTRACT The consideration of pipe eccentricity and its impact on hole cleaning has not been widely reported in literature. Pipe eccentricity affects the average velocity of the drilling fluid in the annulus which is one of the most important factors considered in hole cleaning. In this study, developed equations of motion for a couette flow of non-Newtonian power-law fluid through an eccentric annulus are used to determine the effect of pipe eccentricity on hole cleaning. A graph for the ve...
ABSTRACT Conventional methods used in determining initial gas-in-place and reserves for a dry gas reservoir entails the use of P/z vs cumulative production data. In a normally pressured gas reservoir, the only important production mechanism is the compressibility of the gas. Many reservoir engineering calculations take advantage of this fact to simplify analysis. However, in deep geopressured gas reservoirs, the compressibility of the gas is much smaller and does not totally dominate product...