Mohammed Falalu Hamza

Bio: Mohammed Falalu Hamza is an academic researcher from Bayero University Kano. The author has contributed to research in topics: Enhanced oil recovery & Nanoparticle. The author has an hindex of 4, co-authored 13 publications receiving 33 citations. Previous affiliations of Mohammed Falalu Hamza include University of KwaZulu-Natal & Universiti Teknologi Petronas.

Application of Magnetic and Dielectric Nanofluids for Electromagnetic-Assistance Enhanced Oil Recovery: A Review

Abstract: Crude oil has been one of the most important natural resources since 1856, which was the first time a world refinery was constructed. However, the problem associated with trapped oil in the reservoir is a global concern. Consequently, Enhanced Oil Recovery (EOR) is a modern technique used to improve oil productivity that is being intensively studied. Nanoparticles (NPs) exhibited exceptional outcomes when applied in various sectors including oil and gas industries. The harshness of the reservoir situations disturbs the effective transformations of the NPs in which the particles tend to agglomerate and consequently leads to the discrimination of the NPs and their being trapped in the rock pores of the reservoir. Hence, Electromagnetic-Assisted nanofluids are very consequential in supporting the effective performance of the nanoflooding process. Several studies have shown considerable incremental oil recovery factors by employing magnetic and dielectric NPs assisted by electromagnetic radiation. This is attributed to the fact that the injected nanofluids absorb energy disaffected from the EM source, which changes the fluid mobility by creating disruptions within the fluid’s interface and allowing trapped oil to be released. This paper attempts to review the experimental work conducted via electromagnetic activation of magnetic and dielectric nanofluids for EOR and to analyze the effect of EM-assisted nanofluids on parameters such as sweeping efficiency, Interfacial tension, and wettability alteration. The current study is very significant in providing a comprehensive analysis and review of the role played by EM-assisted nanofluids to improve laboratory experiments as one of the substantial prerequisites in optimizing the process of the field application for EOR in the future.

Recent advancement of hybrid materials used in chemical enhanced oil recovery (CEOR): A review

Abstract: Depletion of natural oil reserves has forced oil industries to focus on tertiary recovery methods to extract residual oil after exhausting the primary and secondary methods. Among the Enhance Oil Recovery (EOR) technologies, Chemical EOR (CEOR) is gaining popularity. Despite research efforts to increase the recovery using CEOR, increasing complexity in extraction methods are encountered. With changes in reservoir conditions (high temperature, pressure and salinity) and crude oil properties, existing chemicals used in CEOR, such as alkali, polymers and surfactants do not function desirably. These conditions have detrimental effects on the performance of EOR chemicals, like precipitation, degradation, etc. Development and utilization of effective EOR hybrids such as surfactant-polymer, polymer-nanomaterial, surfactant-nanomaterial and polymer-surfactant-nanomaterial had prevailed the effects of harsh reservoir conditions, and their applications in oil fields in recent years have increased the success of EOR. The synergistic effects between the hybrid components play major roles in improving the properties that could withstand the effect of extreme reservoir conditions and changes in crude oil properties. Therefore, this paper is aimed at reviewing recent advances in CEOR hybrid technologies, and discusses the basic concept, applications, advancement and limitations of different hybrid materials used in CEOR processes.

Effect of Annealing Temperature on the Crystal and Morphological sizes of Fe2O3/SiO2 Nanocomposites

Abstract: Annealing the synthesized materials at different temperatures is very significant in ensuring the complete removal of the impurities during the particle formation process. Recently, nanocomposites material has shown reasonable outcomes and performed exclusively over bare single nanoparticles (NPs) in various fields of studies. In this paper, the composite of Fe2O3/SiO2 nanomaterial was synthesized via a Sol-gel auto-combustion method with aid of organic precursors. The material was synthesized at various concentrations and annealed at different temperatures. Characterization of the composite material was done by analyzing crystal structures, elemental composite distributions, morphologies, and chemical compositions via X-Ray Diffraction (XRD), Energy dispersed X-ray (EDX), Field Emission Scanning Electron Microscopy (FESEM), and Fourier-Transform Infrared Spectroscopy (FTIR), respectively. The chemical interaction between amorphous silica and iron oxide nanoparticles has been established due to the manifestation of the characteristic wavelengths corresponding to the linkage bond between the amorphous silica and iron oxide nanoparticles. The FESEM imaging revealed that the morphological size increased significantly with an increase in temperature. Furthermore, in the XRD experiment, it was found that increasing the temperature has significantly improved the crystal properties of the composite material. Hence, annealing temperature can serve as a reliable method that can control the morphological size and crystal structure of the materials

Advances in polyaniline-based nanocomposites

Abstract: In this review article, synthesis, properties and applications of polyaniline-based nanocomposites (PANI-NCs) have been described. Different methods (viz chemical, electrochemical, photochemical and mechano-chemical) and size confinement tools used for preparation of PANI-NC are described with their advantageous and disadvantageous features. On the basis of synergized electrical, magnetic, optical, mechanical and thermoelectric properties, PANI-NCs are used in development of sensors, support catalysts, water purifications, energy and biomedicals. Further, applications of PANI-NC are elaborated with suitable examples centring on the role of nano-confinements and chemical modification along with existing challenges for commercial uses.

Permeation Damage of Polymer Liner in Oil and Gas Pipelines: A Review.

Abstract: Non-metallic pipe (NMP) materials are used as an internal lining and standalone pipes in the oil and gas industry, constituting an emerging corrosion strategy. The NMP materials are inherently susceptible to gradual damage due to creep, fatigue, permeation, processing defects, and installation blunder. In the presence of acid gases (CO2, H2S), and hydrocarbons under high pressure and temperature, the main damage is due to permeation. The monitoring of possible damage due to permeation is not well defined, which leads to uncertainty in asset integrity management. Assessment of permeation damage is currently performed through mechanical, thermal, chemical, and structural properties, employing Tensile Test, Differential Scanning Calorimetry (DSC), Fourier-transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM)/Transmission Electron Microscopy (TEM), to evaluate the change in tensile strength, elongation, weight loss or gain, crystallinity, chemical properties, and molecular structure. Coupons are commonly used to analyze the degradation of polymers. They are point sensors and did not give real-time information. Polymers are dielectric materials, and this dielectric property can be studied using Impedance Analyzer and Dielectric Spectroscopy. This review presents a brief status report on the failure of polymer liners in pipelines due to the exposure of acid gases, hydrocarbons, and other contaminants. Permeation, liner failures, the importance of monitoring, and new exclusive (dielectric) property are briefly discussed. An inclusive perspective is provided, showing the challenges associated with the monitoring of the polymer liner material in the pipeline as it relates to the life-time prediction requirement.