ABSTRACT This research focused on studying the suitability of a blend of plant extracts for sweet corrosion inhibition on carbon steel in 3.5% NaCl solution. A comparative study was carried out to investigate the efficacy of sweet corrosion inhibition using palm, jatropha and palm-jatropha extracts at concentrations of 100 ppm, 200 ppm, and 400 ppm to show the effect of blending on the inhibitive performance of plant extracts. An analysis of the extracts was carried out and weight losses as ...
ABSTRACT As reservoirs become more complex and drilling operations more expensive, the need to reduce both inefficiencies and costs for constructing and analyzing high quality static models is essential. The effective and efficient production of petroleum from a reservoir lies on the proper characterization of the reservoir. Once the static model resulting from reservoir characterization is satisfactory and heterogeneities taken care of, it is but evident that the uncertainties will be minimi...
ABSTRACT 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 fluids to maintain the pressure in the wellbore and prevent intrusion of unwanted fluids from the formation being drilled. Most African countries hold significant reserves of barite but a number of challenges have limited local production resulting in poor quality wh...
Abstract Solution gas drive reservoirs are characterized by rapid and continuous decline of reservoir pressure. This rapid and continuous decline of reservoir pressure causes direct decline of reservoir performance at early stages of the life of the reservoir. The principal source of energy which is gas liberation from the crude oil and the subsequent expansion of the solution gas as the reservoir pressure is reduced are inadequate to produce such reservoirs to their full capacities. Ultimat...
ABSTRACT Prodigiosin molecule, whose efficacy in the treatment of cancer has proven positive, has been studied using first-principles Density Functional Theory (DFT) methods as implemented in VASP - Vienna Ab initio Simulation Package. Initial structure of prodigiosin generated using ArgusLab 4.0.1 program was subjected to geometry optimization in the VASP program in order to determine the ground state structure. The optimized interatomic bond lengths and angles are comprehensively character...
ABSTRACT Well stimulation consists of several methods used for enhancing the natural producing ability of the reservoir when production rate declines. A detailed literature review of some of the well published stimulation models are discussed in this research. This discussion was preceded with an introduction to formation damage concepts and an overview of well stimulation methods. Production decline curve analysis is combined with economic discounting concepts to develop a model that can be...
ABSTRACT In this study, the fracture toughness and resistance curve behaviour of laminated panels, produced from the tropical Nigerian bamboo species Bambusa vulgaris, were investigated to assess its potential for use as an alternative construction material. Round bamboo culms were processed into laminated panels. The Mode I fracture toughness KIC, and the resistance-curve (R-curve) behaviour of the laminates in the crack arrester and divider orientations were investigated using ASTM E399 si...
ABSTRACT Gas condensate reservoirs are single phase at the initial condition. It changes to multiphase when the reservoir conditions are located between the critical point and the cricondentherm of the reservoir in the phase envelope. This makes it unique to providing a reliable source of energy for human usage. The objective of this study is to use a 3D compositional model of the Niger Delta field to evaluate the production of a gas condensate reservoir. This study is integrated into two ma...
ABSTRACT Improper disposal of commodity plastics e.g. polyethylene (PE) in the environment causes land pollution, soil infertility, is unsightly and poses dangers to plant and animal life. The current effort describes the bacteria mediated biodegradation of commodity plastics by Serratia marcescens marcescens without first subjecting the plastics to thermo-oxidative ageing. It further elaborates on the mechanism and breakdown that are involved in the biodegradation of PE. 90 ml of carbonless...
ABSTRACT Titanium alloy is popular in biomedical application owing to its low density, good biocompatibility (i.e. biological and chemical inertness) and excellent mechanical properties. Due to the high disparity between the implant and bone Young’s moduli, the alloy causes stress shielding in the body. Porous Ti alloy implants have proven to be effective in addressing this issue, so in this work, we created a porous Ti-6Al-4V implant by sieving the as-received Ti-6Al4V powder into differe...
Abstract Hydraulic fracturing is an effective well stimulation technique which is introduced in the 1950s and widely used in the oil and gas industry. Most of the works about hydraulic fracture assumed that the fracture is symmetric and either vertical or horizontal. But, several field and laboratory observations show very complex fractures, inclined, multi-segmented, asymmetric, and the presence of multiple fractures. The purpose of this study is to investigate the pressure behavior of a un...
Abstract Sodium-ion batteries (SIBs) have been identified as an effective technology for grid-scale energy storage because of relatively low cost and natural abundance of sodium, but the lack of suitable anode materials with high Coulombic efficiency and reversible capacity has been a challenge. While graphite, an anode material in Lithium-ion batteries (LIBs), has been used for storing Na ions, its performance in terms of efficiency and capacity has been unsatisfactory for practical applica...
ABSTRACT Existing data show that Portland cement material production contributes ~8% to the global CO2 emissions. This is detrimental to the environment and can lead to global warming. It is therefore pertinent to develop alternative cost-effective and environmentally friendly cement material. The geopolymerization technology presents a solution. This project is aimed at using a Nigerian metakaolin-based geopolymer as a sustainable alternative to Portland cement. Kaolin clay sourced from Kan...
ABSTRACT The Niger Delta is Nigeria’s and Africa’s most prolific producing basin and has some untapped oil resources because of their marginality. The development of marginal oil field in Nigeria has now become an important strategic issue. This is due to the vast availability of these fields scattered all over the Niger Delta. The Federal Government of Nigeria in a bid to kick-off indigenous participation in the upstream sector of the petroleum industry initiated the marginal field prog...
ABSTRACT Large quantities of petroleum resources in the Niger Delta province are confined to unconsolidated turbiditic and silici-clastic rocks. These rocks are usually associated with high volumes of shale. The high volumes of shale create discontinuities within the reservoir units causing division of the reservoir into several flow units. The complex nature of these reservoir units coupled with the incidence of many thin beds within them makes it difficult to conduct credible petrophysical...