ABSTRACT 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 which reduces the relative permeability to gas and in turn causes productivity impairment. It is pertinent to predict condensate banking behavior accurately during a field’s operational phase to avoid problems with a well’s ability to attain production targets. Th...
ABSTRACT Binders are important components of electrodes of supercapacitors because of their ability to adhere active components and make the resultant slurry to adhere on current collectors. This work seeks to investigate the possibility of a bioactive polymer (chitosan) substituting the conventional fluoro-thermoplastic binders used in supercapacitors within the constraint of electrochemical characterizations. Chitosan based electrodes at 3% acetic acid concentration displayed the best elec...
ABSTRACT The production of formation sand is a problem associated with most oil deposits in the world. Major Sand production effects affect safety, well or field economics and continuous production. This has prompted the continued search for solutions to mitigate sand production in the oil and gas industry over time. The methodology often employed is through exclusive sand control or passive sand management. The ability to predict when a formation will fail and produce sand forms the basis a...
ABSTRACT The transportation of cuttings and efficient hole cleaning are indispensible in any drilling program. This is because a successful drilling operation is the key to a profitable business in the oil and gas sector. A successful drilling program is as a result of an efficiently cleaned hole. Cuttings transport efficiency in vertical and deviated wellbores has been reported to depend on the following factors: hole geometry and inclination, average fluid velocity, fluid flow regime, dril...
ABSTRACT Carbon dioxide (CO2) corrosion, also known as sweet corrosion of steels has increased in recent years due to the injection of CO2 into oil wells in order to increase oil recovery and production. Despite the fact that carbon steel has a low corrosion resistance, it is widely used in the petroleum industry due to its economic advantage. It has been reported that when ferrous steels are exposed to a corrosive medium, they form a protective surface film which helps to decrease the rate ...
ABSTRACT Proper management of thin oil rim reservoirs is required to maximize recovery and minimizes coning tendencies. The objective of this study is to determine the effect of reservoir and fluid properties on coning tendencies in thin oil rim reservoirs and to develop numerical correlations to predict oil recovery and water break through time for these reservoirs. Numerical correlations for the prediction of recovery and water breakthrough time using response surface methodology have bee...
Abstract Most countries in Africa are faced with difficult challenges in terms of providing safe, clean drinking water for their citizens. The world Health organization estimates that approximately 500 lives are lost per day in Nigeria from water related diseases while globally, 1.1 billion lack access to improve water supplies. Point-Of-use water treatment technologies, such as household ceramic water filters, offer an affordable and effective means of treating water to standards suitable f...
ABSTRACT Modeling of wind speed variation is an essential requirement in the estimation of the wind energy potential for a typical site. In this paper, the wind energy potential in Ibadan (Lat. 7.430 N; Long. 3.90 E; Alt. 227.2m) is statistically analyzed using daily wind speed data for 10 years (1995-2004) obtained from the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. The daily, monthly, seasonal, and yearly wind speed probability density distributions are modeled...
ABSTRACT This study shows the usefulness of Artificial Neural Network (ANN) in maintenance planning and management.
ABSTRACT This work studied the effects of degrees of warm-split rolling at different temperatures on the strengths of three different grades of austenitic steels (chrome–manganese, chrome–manganese with Ni and Mo additions, chrome–nickel with Mn and Mo additions). The results were compared with cold-rolling effects on the steel grades. The tensile, hardness and impact strengths of the rolled products were obtained. The results showed that thermomechanical working remarkably influenced t...
ABSTRACT The analysis of a transient 2-Dimensional heat conduction problem by the Finite Element Method is hereby presented.
ABSTRACT Locating a suitable radioactive waste disposal site in the Dahomeyan System of the Accra Plains has become necessary in isolating radionuclide waste from the biosphere to reduce risk to human and environment. Radionuclide as leaked from canister into the groundwater is carried by groundwater through fractured domain in space and time lead to groundwater contamination that poses threat to humans and the environment. Previous researches carried out in the study area modelled radionucli...
Abstract The objective of the study was to determine the most appropriate methods of initial land preparations in Afram Plains based on their effect on selected soil physical properties such as dry bulk density, porosity, hydraulic conductivity and available water content. The study also sought to estimate the cost of preparing farm lands in the Afram Plains. The study was conducted in Odumesua in the Afram Plains District sampling soil from fields prepared with three identified and categoriz...
ABSTRACT The thesis dealt with the temperature fluctuation in a T-junction with two fluid streams of different temperature. This phenomenon is of crucial importance in many engineering applications such as Nuclear Power Plants, because temperature fluctuation leads to thermal fatigue and subsequently might result in failure of structural material. In mixing areas of a Nuclear Power Plant where piping structure is exposed to unavoidable temperature differences in a bid to maintain plant oper...
CHAPTER ONE: INTRODUCTION 1.1 Background of the Study The world‟s population growth is increasing rapidly and requires a corresponding growth in electric energy production. The current worldwide electricity sources, consists of approximately coal 41%, gas 20%, oil 6%, nuclear 15%, and hydro and renewable together 18% [1]. For the world to support its population there must be an increase in the use of energy supplies that are clean, safe and cost-effective. Prominent among these supplies i...