Browsing by Author "Khaleel Jakada"

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A COMPREHENSIVE REVIEW OF HYDRAULIC FRACTURING TECHNIQUES IN SHALE GAS PRODUCTION
(NJEAS, 2023-01-01) Umar Adekola; Abdullahi Gimba; Ayuba Salihu; Khaleel Jakada; Ikechukwu Okafor ; Petrus Nzerem; Joseph Chior; Oghenerume Ogolo; Khadijah Ibrahim
Shale gas has emerged as a significant source of natural gas due to advancements in hydraulic fracturing and horizontal drilling technologies. This extraction method has facilitated drilling and production activities in regions previously untouched by oil and gas development. Hydraulic fracturing, a well-stimulation technique suitable for low and moderate-permeability reservoirs, relies on the successful drilling of horizontal wells and the creation of multiple hydraulic fractures to ensure economic viability. While shale gas presents significant energy production opportunities, concerns have been raised regarding its environmental impact. To mitigate these risks and determine the most effective approach for shale gas extraction, alternative fracturing technologies are being investigated. Notably, a considerable number of perforation clusters in shale gas horizontal wells do not contribute to production, highlighting the potential for refracturing. Therefore, a comprehensive analysis is required to evaluate the performance of hydraulic fracturing and alternative fracturing technologies in shale gas wells, considering factors such as cost-effectiveness, environmental impact, and gas extraction efficiency. This article aims to evaluate the hydraulic fracturing technology's capability to enhance gas recovery in shale gas formations as well as its environmental implications. The focus of this research is primarily on the hydraulic fracturing technique employed in shale gas development, its production capability, and associated environmental concerns. Through a systematic evaluation, this study provided valuable insights into the potential of hydraulic fracturing in maximizing gas recovery while addressing environmental challenges in shale gas formations.
A Review on Biomass Briquettes as Alternative and Renewable Fuels
(IEEE, 2023-02-28) Adekunle Akanni Adeleke; Petrus Nzerem; Ayuba Salihu; Esther Nneka Anosike-Francis; Adebayo Isaac Olosho; Etowa Emmanuel Obasesam; Sakeenah Sadiq Abubakar; Dakut John Yerima; Khaleel Jakada
The adverse effects of the combustion of fossil fuels on humanity and the environment have made it vital to discover eco-friendly, sustainable, and renewable energy alternatives. Globally, there exists loose biomass, which is agricultural and cultural waste that can be utilised to produce briquettes, a type of solid fuel. Briquettes have played a significant role in the energy generation economies of both developing and developed nations. The production of briquettes involves a series of activities, including collection, transportation, storage, processing, and densification of the feedstock to meet predetermined quality parameters. Rice husk, corn stalk, wheat straw, cassava stalk, groundnut shell, olive husk, palm kernel shell and coconut shell are among the feedstocks for briquettes. In order to increase the cohesive strength of the briquettes, binders are incorporated during the densification process. This study aims to investigate the current state of research regarding the utilisation of biomass-derived briquettes as a viable substitute for traditional fuels. To achieve this objective, a comprehensive analysis of recent literature published between 2017 and 2023 is conducted. This study encompasses essential subtopics, including the accessibility of biomass, the selection of binders, the parameters of the briquette process, and the equipment used for briquetting.
ASSESSMENT OF HEAVY METAL POLLUTION INDEX OF WATER-BASED DRILLING FLUID WASTE
(NJEAS, 2023-10-01) Malut Abba; Abdullahi Gimba; Ayuba Salihu; Petrus Nzerem; Ikechukwu Okafor; Khaleel Jakada; Joseph Chior
The prevalence of heavy metal pollution in oil and gas producing areas, Niger-Delta Nigeria, due to drilling activities in some oil and gas sites has resulted in the pollution of an immeasurable area of land and water. This study appraised the level of environmental menace caused by heavy metals in water-based drilling fluid waste. It involved an oil and gas site where drilling activities were taking place and settlement with no record of drilling activities served as control. In the drilling sites, two composite drilling fluid waste samples were collected before and after treatment and analyzed for cadmium, chromium, iron, nickel, lead, and zinc using flame atomic absorption spectrophotometry. The measured concentrations of the heavy metals in drilling fluid wastes were then used to determine the pollution and ecological risk posed by heavy metals. The thermal desorption treatment method was used. Their concentrations before and after treatment of the drilling fluid wastes were in the order Fe > Cr >Zn > Cd > Ni > Pb and Fe > Cr > Ni > Zn > Pb > Cd respectively with Cr, Fe, Ni, and Pb having their concentrations higher than permissible levels in water after treatment and responsible for most of the total potential ecological risk. The PLI (Pollution Load Index) before and after treatment were 0.0463 and 0.0017 respectively. There was a drastic decrease in potential pollution levels after treatment. Also, all the several pollution indices studied revealed that the drilling sites were contaminated with Cd and Cr. This reveals that drilling sites cause further risk of heavy metal pollution. The correlation analysis of heavy metals assessed is between 0.9 - 1.0 suggesting that all the heavy metals assessed showed high positive correlation coefficients at (p < 0.05) and likely originated from the same source of drilling activities in the study area.
Current Developments on the Application of Hydrogen in Industry: A Review
(NJEAS, 2024-04-18) Petrus Nzerem; Jacklyn Oche; Mohammed Sherrif; Khaleel Jakada; Ikechukwu Okafor; Joseph Chior; Chinaza Enwere; Adekunle Akanni Adeleke
The worldwide transition in energy utilization to a society that is “carbon-neutral” demands a major revamp of power generating and distribution networks. Notwithstanding, in the great drive for the growth of renewable energy that is clean and environmentally safe, hydrogen's incorporation into energy networks is currently understudied. The state of the current art and prospects for the future, including prospective applications of hydrogen technologies in energy are examined in this overview. The findings demonstrate the fact, which portrays continual efforts to increase performance, technological perspective, and increases in scale. Finally, governmental support is of great importance and necessity if allowance is to be made for a cost-competitive hydrogen economy.
Defining the Optimal Development Strategy to Maximize Recovery and Production Rate from an Integrated Offshore Water-Flood Project
(Society of Petroleum Engineers, 2019-07-31) Hajara Kabeer Abdulfatah; Ikechukwu Okafor; Petrus Nzerem; Khaleel Jakada
A reservoir development plan provides the necessary guidance and information for establishing whether or not a project is economically viable considering possible development project options, risks and uncertainties in order to define the most optimal development concept that will increase oil production and reduce production costs. The aim of this project was to determine the optimum way to develop and produce an offshore oil field in a manner that considers risks and uncertainties and values stakeholders’ interest. A stochastic multi-tank reservoir model was created using MBAL and it consist of various producers and water injection wells. Sensitivity analysis was carried out on Seven development scenarios with a view to examine effect of maintaining reservoir pressure, sustaining well productivity and injectivity, optimize well counts and improving well delivery- timing, cost and well performance. The economic viability of each of the development scenarios was carried out to determine the net present value, incremental project cash flow, unit technical cost, unit development cost and breakeven price BEP of each of the scenarios. The optimal development strategy was then selected based on the production performance and key economic indicators. The project provided an opportunity to develop an additional 396MMbbls of recoverable oil from 32 new wells both producers and injector wells (P+WI).
Effect of Raw and Delignified Banana Stem (Musa Cavendish) On the Rheological and Filtration Loss Properties of Water Based Mud
(NJEAS, 2023-10-12) Ayuba Salihu; Ahmed Abubakar; Petrus Nzerem; Abdullahi Gimba; Khadijah Ibrahim; Ikechukwu Okafor; Khaleel Jakada
In compliance with environmental laws and safety rules, oil and gas companies have taken necessary steps to eradicate the use of toxic chemicals conventionally used in drilling muds, thereby promoting biodegradable alternatives. This research was carried out to investigate the effect of two banana stem samples; Raw Banana Stem (RBS) and Delignified Banana Stem (DBS) as potential and proficient viscosifiers and fluid loss control agents in water based mud. The rheological properties evaluated include plastic viscosity (cP), apparent viscosity (cP), yield point (Ib/100ft2) and gel strength (Ib/100ft2) at 10 seconds and 10 minutes. Filtration loss properties evaluated include filter cake thickness (mm) and fluid loss volume (ml). Each drilling mud sample was prepared using 350 ml, 20 g bentonite and varying contents (g) of carboxyl methyl cellulose (CMC), RBS and DBS. A mixer was used to mix the mud homogenously; the rheological properties were calculated using a viscometer while the filtration loss properties were calculated using a filter press. The results and analysis were compared to the effects of commercially available carboxymethyl cellulose to validate its properties. RBS and DBS improved the rheological properties of the mud sample contents of 3 g, 5 g, 7 g and 9 g. At contents of 5 g, 10 g, 15 g and 20 g, RBS and DBS samples provide significant fluid loss control and their results are similar to the results of CMC. RBS has a fluid loss volume increase of 6.84 %, 5.69 %, 17.12 % and 8.06 % from CMC’s results at slightly similar filter cake thickness while DBS has a fluid loss volume increase of 15.59 %, 15.09 %, 27.55 % and 15.35 % from CMC’s result. The data obtained from the experiments showed both banana samples can be used as environmentally friendly viscosifiers and fluid loss control agents.
Evaluation and Treatment of Cement Contamination in Water Based Mud
(NJEAS, 2023-01-01) Tahir Aliyu; Ikechukwu Okafor; Ayuba Salihu; Khaleel Jakada; Oghenerume Ogolo; Petrus Nzerem; Abdullahi Gimba; Oluogun Olawale
Drilling mud is susceptible to contamination, particularly from cement, yet monitoring its characteristics and implementing control and remediation strategies is critical for its performance in safe and cost-effective drilling operations. This study presents an experimental investigation into the evaluation and treatment of cement contamination in Water Based Mud (WBM). Four mud samples were prepared and three were contaminated with 4g, 8g and 12g of cement. A chemical treatment using 6g of sodium bicarbonate was applied as a remedy for contamination. The Rheological properties, mud pH and mud densities of the contaminated and treated Water Based Mud at temperatures of 35°C, 55°C, 75°C and 95°C were determined. Furthermore, the elemental composition of samples of contaminated and treated Water Based Mud was determined using an X-Ray Fluorescence Spectrometer. From the results obtained the mud density increased with a rise in cement concentration for both contamination and treatment with the exception of 8g cement concentration at 75°C and 95°C and 12g cement concentration at 55°C and 75°C where a decrease was observed in the treatment process. The yield point and 10second gel increased for both contamination and treatment process. In contrast, the 10minute gel decreased for both contamination and treatment process. With some exceptions, increasing cement concentration resulted in a decrease in plastic viscosity, whereas treatment with sodium bicarbonate resulted in an increase with some exceptions. The mud pH for the contamination process increased as cement concentration increased, while treatment only marginally increased it with exception of 12g at 75°C and 95°C where a decrease was observed. Sodium bicarbonate treatment improves stability by decreasing excessive calcium and lime contamination from cement, reducing pollutants and enhancing the pH stability of the drilling mud. Additionally, results from the mud characterization indicates a higher percentage of 17.962% lime (CaO) for cement contamination and lower percentage of 15.710% lime (CaO) for treatment with sodium bicarbonate which agrees with literature for the treatment process.
Influence of Local Additives on Water Based Drilling Mud: A Review
(NJEAS, 2023-09-20) Petrus Nzerem; Khaleel Jakada; Mohammed Shariff; Abdulquddus Ozigi; Ayuba Salihu; Ikechukwu Okafor; Steve Adeshina; Khadijah Ibrahim; Adekunle Akanni Adeleke
This review paper focuses on the use of local additives in water-based drilling mud to reduce environmental impact and improve drilling operations. Drilling mud plays a crucial role in drilling operations by acting as a coolant, carrying drilled particles, stabilizing the wellbore, and preventing wellbore issues. However, poorly formulated drilling mud can lead to drilling difficulties and environmental pollution. Therefore, the exploration of organic-based drilling mud additives, sourced locally in Nigeria, is discussed in this paper.it highlights the potential of transforming organic waste materials, such as rice husk, cassava, corn cobs, and more, into usable products for drilling mud. By utilizing these locally sourced organic materials, the environmental impact of drilling waste can be minimized. The importance of waste management in the oil and gas industry is emphasized, as it is crucial for sustainable drilling practices. The paper further discusses various studies and experiments conducted on the use of local polymers and natural materials as substitutes for imported additives in water-based drilling mud. These materials include cassava starches, agro-waste materials, eco-friendly drilling fluid additives, and various plant-based substances. The performance and effectiveness of these materials are evaluated in terms of viscosity control and fluid loss prevention. The results indicate that many of these local polymers and natural materials can be viable and have shown positive results in terms of improving the rheological and filtration characteristics of the mud, reducing fluid loss, and enhancing overall mud qualities. Earlier studies on the use of agro-waste products as additives in drilling fluids are reviewed in this paper. These studies examine the properties affected by local materials, the type of mud used, and the findings of each study. The economic analysis of using agro-waste materials as drilling additives is also discussed. The conclusion highlights the availability and affordability of agricultural waste materials as potential substitutes for traditional drilling additives, which can help reduce drilling costs. The paper also provides recommendations for future research in this area.
MODIFICATION, CHARACTERIZATION AND APPLICATION OF LOCALLY SOURCED ORGANOCLAY FOR OIL SPILL REMEDIATION
(NJEAS, 2023-01-01) Ikechukwu Okafor; Roselyn Odimba; Ayuba Salihu; Oghenerume Ogolo; Petrus Nzerem; Abdullahi Gimba; Khaleel Jakada
The Bentonite clay, obtained from Ubakala, Umuahia, in Abia State was investigated as a sorbent for the potential treatment of oil spill in aquatic medium after its modificaion with Dioctadecyl dimethyl ammonium bromide (DODAB). The purified clay sample was subjected to hydrothermal ion exchange reaction to synthesize organoclays under mild reaction conditions. Changes in the microstructural, morphological and physicochemical properties of the modified clay samples were investigated and studied with the use of Fourier Transform Infrared (FTIR), Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX). The observations showed the presence of new organic compound groups which indicated that the surfactant was intercalated successfully. The organoclays were further tested in a simulated oil spill situation to assess their potential as oil sorbents and sorbed about 4.5% of the oil that was simulated in the laboratory in water. The results further showed that the synthesized organoclay can be used for the remediation of oil spillage. The organoclays present a cost effective and a suitably environmentally friendly alternative for the remediation of oil spill polluted lands in the Niger Delta region of Nigeria.
Production of bioplastic films from wild cocoyam (Caladium bicolor) starch
(Elsevier, 2024-10-15) Chinaza Enwere; Ikechukwu Okafor; Adekunle Akanni Adeleke; Petrus Nzerem; Khaleel Jakada; Adebayo Isaac Olosho; Peter Pelumi Ikubanni; Prabhu Paramasivam; Ayuba Salihu
This study tackles the pressing environmental challenges resulting from the rapid and ongoing use of conventional plastics by investigating biodegradable alternatives derived from wild cocoyam starch. The bioplastics developed from various formulations, incorporating gelatin, glycerine, vegetable oil, and vinegar, were systematically evaluated for their mechanical, chemical, microstructural and biodegradability properties. The addition of glycerine and gelatin enhanced the moisture content and flexibility of the films while vegetable oil improved water resistance, reducing water absorption. Th sample that contains 3 g of gelatin and 3 ml of glycerine exhibited the best overall performance with a tensile strength of 6.5 MPa and an elongation at break of 77 %. This sample also achieved an impressive biodegradation rate of 70 % within 7 days. Scanning Electron Microscopy revealed a uniform and smooth morphology, while Fourier Transform Infrared Spectroscopy confirmed the presence of key functional groups responsible for the material's performance. These results establish wild cocoyam starch as a promising resource for producing biodegradable bioplastics with considerable potential in various industries, particularly in packaging and agricultural applications. The excellent mechanical properties and biodegradability of the materials along with its natural abundance, offer an eco-friendly solution to the plastic waste problem. The study also opens new avenues for optimizing bioplastic formulations to enhance specific properties like thermal stability and moisture resistance, further broadening their practical applications. This research contributes to the sustainable materials landscape and represents a step toward reducing reliance on fossil-based plastics, advancing the global effort to mitigate environmental pollution.
Production of Fuel Oil from Blends of Refinery Products for Powering Heat Exchanger
(NJEAS, 2024-04-21) Aminu Abubakar; Joseph Chior; Ayuba Salihu; Petrus Nzerem; Abdullahi Gimba; Ikechukwu Okafor; Khaleel Jakada
Fuel oil, also known as furnace oil is a fraction of crude oil obtained when distillation processing is carried out in the refinery. Due to the high viscous of the heavy fuel oil, that makes it difficult to be pump throughout the pipework of the power plant, it is necessary to produce a fuel oil that will meet up the required standard. The aim of this study was to produce fuel oil from the blend of refinery intermediate product which meet certain European fuel specifications outlined in the EN 590:2009 standard alongside NMDPRA Standards. The blending stocks obtained from the Warri Refinery and Petrochemical Company (WRPC) were first filtered to remove some particulate impurities before they were analyzed to determine their properties after which, they were introduced into a mixed-tank that has an agitator connected and the blending was done using the blending ratio obtained from literature. The fuel oil produced was eventually analyzed for properties such as: Specific Gravity, API Gravity, Density, Viscosity, Kinematic Viscosity, Moisture Content, Flash Point, Cloud Point, Pour Point and Sulphur content. The sample with a composition of 33.3% of Decant oil (DCO), 33.3% Heavy gas oil (HGO), 33.3% light cycle oil (LCO) produced fuel oil of specific gravity 0.916, API Gravity 22.95, Density 0.896, Viscosity 40, Kinematic viscosity 4.7, pour point -6.5 and flash point 109, The analysis of the fuel oil meet the standard for blended fuel oil, according to the ISO 8217:2017 Standard. The results confirmed that blending of decant oil with conventional petroleum diesel (heavy and light gas oil) has a highly significant effect on the properties of the resulting fuel blend. The results show that by increasing the heavy gas oil content of the blend, the flash point of the blend increases; while increasing the decant oil content of the blend results in a decrease in Cloud point. The results of the analysis of the produced fuel oil confirms that its properties fall within the acceptable range for Fuel Oil and can be used as fuel for fired heaters and furnaces of the refinery and other process plants.
STUDY OF THE POTENTIAL OF CALCIUM HYDROXIDE SYNTHESIZED FROM PERIWINKLE SHELL AS A pH ENHANCER IN WATER BASED DRILLING MUD
(NJEAS, 2023-01-01) Zainab Lamin; Ikechukwu Okafor; Khaleel Jakada; Petrus Nzerem; Abdullahi Gimba; Oghenerume Ogolo; Ayuba Salihu; Khadijah Ibrahim
Reservoirs that contain acidic gases can lead to the corrosion of the drilling string and casing which could result in incessant down time and also increase the cost of drilling operation. This research work aimed at investigating the potential of using locally sourced materials such as Periwinkle Shell Ash (PSA) that can serve as substitutes to imported chemicals used in the industry, to help raise the mud pH to the API standard (9.5-12.5) whilst reducing the cost of drilling operation. Calcium hydroxide (Ca (OH2)) was extracted from Periwinkle Shell using two different process routes (via the calcination of the PSA and without it). Characterization tools were used to assess the functional groups present and the elemental composition of the periwinkle shell. Various laboratory equipment was used to observe the impact the additives would have on the mud properties (pH, mud weight, filtration characteristics and rheological properties) of the new drilling ﬂuid. Results showed that as the mass of the synthesized Ca (OH2) from the calcined PSA, the uncalcined PSA and the commercial Ca (OH2) was increased, the pH of the mud samples was observed to have increased the pH of the base mud by 20.9%, 15.1% and 10%. Therefore, this research showed that the extracted Ca (OH2) acted primarily as a pH enhancer. However, the addition of Ca (OH2) from all sources exhibited poor filtration characteristics as there was high filtrate loss as the filtration time and the additive concentration increased which could affect the formulation and the performance of the drilling mud.