Geophysics, Computers in Earth Sciences, Modeling and Simulation, Engineering
12
Scopus Publications
101
Scholar Citations
6
Scholar h-index
1
Scholar i10-index
Scopus Publications
Holistic Green Transition for Sustainable Development in Nigeria: Challenges and Prospect of Research and Human Metamorphism D. I. Egu, A. J. Ilozobhie, A. Akintade, E. G. Antigha Society of Petroleum Engineers SPE Nigeria Annual International Conference and Exhibition Naic 2025, 2025 Nigeria's green transition program is severely bed-rocked by insurmountable socio-economic enigmas which had severely hampered the search for a dogged and sustainably holistic developmental target of achieving perhaps net-zero emissions by 2060. This is due to politically deliberate and inconsistent allocation of resources to the research end users. The generation of over 30,000 MW of electricity from renewable energy sources by 2050 seems to be a mirage while the conversion of about 80% of vehicles to electric by 2050 still remains an uphill task because of non availability of indigenized proto-type workshops powered by local research institutes. The worst case scenario is the current massive commercialization of gas resources until 2030. This is a devastating and highly restrictive bottlenecked policy to the purported gradual phasing out of fossil fuel, which is the bane of a holistic and futuristic research in green transition at all levels. The aim of this erudition is to carry out a holistic green transition for sustainable development in Nigeria: challenges and prospects of research and human development. A thorough retrospective analysis of green transition in Nigeria was done with aid of published data resources from relevant sites and organizations. Results shows an outline of current challenging trends for the past ten years and suggestion of possible prospects to a sustainable human capital development to power our green transition program. The new model developed shows the new pathways to hinge on for advancing this course.
Extrication of CBM Wellbore Fire Explosion Paradox in Enugu, South Eastern, Nigeria Petroleum and Coal, 2023
Cogent Prognostics of Mellowed Wax Ubiety Temperature Modeling of Nigerian Crude Oil Daniel Ikechukwu Egu, Anthony John Ilozobhie, Justice Osuala Society of Petroleum Engineers SPE Nigeria Annual International Conference and Exhibition Naic 2022, 2022 Cogent prognostic of mellowed wax ubiety temperature of crude oil in the field of study has been a major challenge the four wells were commissioned in 2002. This may be due to the wrong application of conventional techniques of perhaps non- effective wax inhibitors, pipeline insulations, pipeline cleaning, heating and pigging capacity issues, higher cost maintenance and monitoring. The current wax models have numerous short comings in the estimation of simple modification of complex classical wax models and to accurately describe percentage wax solid weights and solid phase trends at controlled temperatures and pressures. Simulation constraints of available crude oil wax simulators are incapacitated by their inconsistent ability to delineate wax appearance patterns at different temperatures with minute time. Non validation of data used with field data makes wax prediction and management difficult. The aim of this study is to compare laboratory results with simulated wax appearance models using the Won original, Won with Sol Params, Chung modified and Pedersen wax models and predict new simplified models from a Field in the Niger Delta. The objectives are to develop improved correlations from the cumulative models for the percentage (%) wax amount (weight) and solid phases at different temperatures using laboratory and mathematically simulated results. To compare results of modified and conventional wax models and technically describing the patterns identified. Four samples of waxy crudes in the Niger Delta were collected intermittently for a period of 16 weeks after pigging. They were characterized, tested and cooled. The wax deposit was scrapped and solid weights and phases were measured at a range of 40 – 100°F and controlled pressure range of 250 to 1200psi. This was used as the controlled data and inputted into the PVTP-IPM mathematical simulator. Results of this modified wax model for solid phase gave Mod Sph = -0.0704T + 6.7536 with R2 = 0.9736. This shows similar pattern (inverse straight line) with the won with the Sol Params and Won original but with high variance from the Pederson wax model due to its higher pour point. Results of Modified Wax model for Solid weight gave Mod Swt = -0.2899T + 28.293 with R2 = 0.987 gave similar patterns greater divergence of the Pederson model. This disparity may be due parameters in the model and wax types. Comparison of the model gave good matches with appreciable square of regressions. Field results showed improved wax predictions, crude oil flow, monitoring and management. The validity of this model is however hinged on the temperature and pressures with PVT data applied while lab results are in consonant with the model results. Wax challenges must be thoroughly examined and the linearization modeling pattern approach embraced and perhaps should deviate from a scholarly exercise but an industry energizer which is strongly recommended as a technical guide to predict, control, interpret and effectively manage wax precipitations.
Enhancing Reservoir Stimulation through Mathematical Remodeling of Pre-Flush Acidizing Volume Algorithm for Different Reservoir Flow Geometries Justice Chidera Osuala, Daniel Ikechukwu Egu, Anthony John Ilozobhie, Blessing Ogechi Nwojiji Society of Petroleum Engineers SPE Nigeria Annual International Conference and Exhibition Naic 2022, 2022 Studies show that an average of 35% of reservoir acid stimulation operations executed every year fails because of limited knowledge of downhole acid placement. Existing models designed for acid pre-flush volumes are limited to Linear, Radial and Ellipsoidal reservoir geometries, therefore, do not account for geological drifts of a typical heterogenic reservoir. This can be erroneous while estimating acid placement volumes as reservoirs can deviate from defined flow geometries due to their dynamic and heterogeneous nature, thereby challenging to estimate acid volumes precisely for stimulations. This study aims to foster sustainability in reservoir flow engineering by deriving a mathematical model that evaluates volumes for reservoirs with flow geometries that deviate from linear and radial. This was established to help introduce a new geometry contributing to the accountability of complex and heterogeneous reservoirs. Sensitivity analysis and investigation using reservoir core data from SPDC Petroleum Chemistry Laboratory were carried out to understand the relationship between Linear, Radial and Modified flow geometries. Analytical results for linear, radial and the fied were generated. These results proved the precision of the modified equation for calculating pre-flush acid volume for reservoir acid stimulation operation.
Cerebral chronological corollary perusal for blitzing fire paroxysm and pipeline attrition in Nigeria Daniel Ikechukwu Egu, Anthony John Ilozobhie Society of Petroleum Engineers SPE Nigeria Annual International Conference and Exhibition 2021 Naic 2021, 2021 Attrition and paroxysm of highly inflammable petroleum products in storage tanks, pipelines and/or haulage trucks is increasingly becoming a scourging socio-environmental quandary with a detrimental effect on the Nigerian economy. Non availability of a holistic response time analytic master plan is a major enigma while industrial disaster managers perhaps are the major culprits since they are mostly not time cognizant for spry and pragmatic delivery of service. The aim of this exposition is to ruminatively carry out cerebral chronological corollary perusal for blitzing fire paroxysms and pipeline attrition in Nigeria on Microsoft excel spread sheet. Comprehensive data validation was done for all models by substituting all solutions of matrix into the predicted time response model. Results of predicted time response model in minutes for case A gave; 101x1 + 79x2 + 59x3 + 45x4 + 24x5 = 358. The predicted time response model for case B gave 78x1 + 56x2 + 43x3 + 30x4 + 13x5 = 260. The predicted time response model for case C gave; 74x1 + 56x2 + 42x3 + 29x4 + 10x5 = 252. Results of these models shows that the average cumulative response time dropped from 3.58 minutes to 2.52 minutes from case A to case C while the coefficients all reduced in their values from model A to C. Improving the source of data gathering and computational processes is recommended for enhancement of this study.
Adumbrative heterodox dictum of wellbore aggregates from sapient recovery factor penchants for honed field praxis Daniel Ikechukwu Egu, Anthony John Ilozobhie Society of Petroleum Engineers SPE Nigeria Annual International Conference and Exhibition 2021 Naic 2021, 2021 Puissant field planning is increasingly becoming a sophisticated quandary with less emphasis on parametric synergy with reservoir spasmodic acuity. This conundrum leads to inaccurate harbinger of the required number of wells to be drilled for future field development programs from existing production and reservoir data particularly at pressures above the bubble point which is a major sobriety as orchestrated in most recent simulators. The aim of this erudition is to compendiously carry out astute predictive heterodox principles of wellbore aggregates from critical recovery factor parameters for savvy field planning. The main objectives are to glean and develop new propinquities for differential pressures (ΔP), rock compressibilities (Co) and oil formation volume factors (Bo) for predicting the number of wells to be drilled and recovery factors (RF) by equating the simulated results and the theoretical model (Ezekwe, 2010). To elucidate, metaphorize and ruminate new models. Reservoir and economic data was carefully simulated using FAST-FEKETE Evolution software for initial 40 future oil wells. Average results were mathematically correlated with recovery factor model to produce new correlations to quickly re-jig field planning efficiency. Results of matched and validated compressibility factors, differential reservoir pressures and oil formation volume factors were correlated with field data from Ezekwe (2011) model. Results of compressibility factor showed increasing similar 3rd order polynomial converging correlation for both models but gave slight divergence with increasing number of wells and RF. Results of differential pressures gave linearly increasing correlation with number of wells and RF while the new model had a cross-over point at 6435.64 psi for 2 wells but slightly increased divergently with number of wells and RF. Results of oil FVF gave a good similar regression (R2) of 0.999 while both models showed decreasing 3rd order polynomial correlation comparison with number of wells but with slight divergent disparity with increased RF. To further validate the potency of this study, detailed comprehensive paired sample test gave standard deviation, standard error of mean and degree of freedom of 0.00356, 0.0012 and 8 for compressibility factors; 324.7, 102.68 and 9 for differential pressure while the oil formation volume factor gave 0.0067, 0.0021 and 9. The predictions obtained by the new model showed appreciable degree of consistency and accuracy with number of wells and RF. This is perhaps largely hinged on the capacity to cogently infuse field data with theoretical and simulated models effectively. This study has clearly shown that no special technique or rigorous computational procedures is required to plan future number of wells to be drilled in a field or perhaps estimate the required RF. Sequel to this, further research is encouraged to inculcate more correlations based on comprehensive field validation studies to improve the efficacy of this model.
Astute expository of vacillation attributes of geoseismo-thermal ruminative of the turonian maastrichtian fika shale in parts of the Bornu Basin, North-Eastern Nigeria Daniel Ikechukwu Egu, Anthony John Ilozobhie Society of Petroleum Engineers SPE Nigeria Annual International Conference and Exhibition 2020 Naic 2020, 2020 The hydrocarbon potential of the Fika shale in parts of the Bornu basin is severely constrained by extreme geothermal gradients with dire consequences on rock elastic properties and subsurface interpretations of both reservoir and source rock evaluations. This paper investigates the potency of tingeing formation temperatures with rock elastic properties by deriving, validating and characterizing geoseismo-thermal variations from six wells. Mathematical inversion principles and assumptions was used to derive new models by tingeing seismic velocity and time as the first case (T1) while bulk and shear moduli was treated as the second case (T2). Sagacious astute analysis of results of computed average geothermal and geoseismo-thermal gradients within the Fika shale showed some degree of convergence particularly in wells Kinasar, Krumta, Masu and Ziye when a detailed robust test of equality of means of both average gradients was investigated suggesting appreciability with seismic properties. Results of a paired sample T-test of T1 and T2 gave mean standard error, standard deviation, covariance, skewness and kurtosis of 0.01537, 0.03764, 0.07, -0.7 and 0.817 for T1 and 0.85217, 2.08739, 0.07, 0.512 and -1.487 for T2. A revalidation of the new model with Emujakporue (2017) (TEMU) and Ola et al. (2017) (TOLA) showed that Emujakporue (2017) gave appreciable degrees of convergence for both geoseismo-thermal gradients due to seismic velocity and time (TGST1) and due to bulk and shear moduli (TGST2) with respect to TEMU but it was observed that TGST2 showed increasing divergence with depth. This result showed similar pattern with the computed data in the study area. Paired sample test correlation validated results of TEMU and TGST1 gave a combined correlation factor, standard deviation and standard error of mean results of 0.992, 3.41474 and 0.94708 while TEMU and TGST2 gave a combined correlation factor, standard deviation and error of mean of 0.989, 11.82514 and 3.27970. Results of covariance gave 738.833 for TEMU with TGST1 and 437.545 for TEMU with TGST2. This means better approximations of TGST1 with TEMU than TGST2. Results of the Pearson's correlation gave 1.0 for TEMU with TGST1 and 0.992 for TEMU with TGST2. This means better correlation of TGST1 than TGST2 with respect to TEMU. Results of paired sample test of correlations, standard deviation and standard error of mean for Ola et al. (2017) gave 0.976, 16.51011 and 4.57908 for TOLA with respect to TGST1 while TOLA with respect to TGST2 gave 0.966, 4.64432 and 1.28810. Covariance results gave 579.301 for TOLA with TGST1 and 302.539 for TOLA with TGST2. Results of Pearson's correlation gave 1.0 for TOLA with TGST1 and 0.988 for TOLA with TGST2. This signifies TGST1 has a better correlation pattern than TGST2. Conclusively, the vacillational attributes of geoseismo-thermal models due to seismic properties performed better than geoseismo-thermal models due to rock elastic properties. Comparison of the computed models showed relatively good match for TGST1 and TGST2. This novel concept perhaps may open up new challenges on the earlier perceived geothermal gradients of the Bornu basin and similar basin in the world. Sequel to this research, the theoretical basis of this model may be investigated further to incorporate other relevant formation properties sensitive to geothermal gradients.
Astute expository of vacillation attributes of geoseismo-thermalruminative of the turonian maastrichtian fika shale in parts of the bornu basin, north-eastern nigeria Society of Petroleum Engineers SPE Nigeria Annual International Conference and Exhibition 2020 Naic 2020, 2020
Holistic Green Transition for Sustainable Development in Nigeria: Challenges and Prospect of Research and Human Metamorphism DI Egu, A Ilozobhie, A Oluwatope onepetro 1 (1), 1-15 , 2025 2025
Software Transmogrification for Expatiated Cerebration of Produced Water Conductivity DI Egu, A Oluwatope International Journal of Engineering, Science and Technology (IJSET) 12 (6 … , 2024 2024
Prognostication of Liquefied Petroleum Gas Espousal for Domestic Cookery in Enugu State, Nigeria DI Egu, A Oluwatope, UJ Eze International Journal of Engineering, Science and Technology (IJSET) 12 (6 … , 2024 2024
Coadjuvants of deterministic and probabilistic tacks for penumbra quantification in a labyrinthic nugatoric Field burgeoning DI Egu, A Oluwatope International Journal of Engineering, Science and Technology (IJSET) 12 (6 … , 2024 2024
Quadrated Flow Regime Models for Pellucid Reservoir Quality Scholium DI Egu, O Akintade International Journal of Progressive Research In Engineering Management and … , 2024 2024
Explicative Ranking Abstraction of Thermodynamic Hydrate Inhibitor Modeling DI Egu, O Akintade, VC Amaefule INTERNATIONAL JOURNAL OF PROGRESSIVE RESEARCH IN ENGINEERING MANAGEMENT AND … , 2024 2024
Installation Modeling and Production Analysis of a Stand-alone and Dual Electrical Submersible Pump in a Complex Multiple Reservoir System DI Egu, RC Okoloekwe, BO Obah, AJ Ilozobhie Madonna Journal of Engineering and Technology 1 (1), 33-52 , 2024 2024
APPLICABILITY OF DISCRETE EQUATION IN MODELLING OF ELECTROCHEMICAL ADVANCED OXIDATION PROCESS OF WATER DISINFECTION RC Okoloekwe, JO Ademiluyi, JC Agunwamba, DI Egu Madonna Journal of Engineering and Technology 1 (1), 22-32 , 2024 2024
Scrutinate proclivity of regional aquifer hydraulic parameters: Apriorisms for borehole failures within parts of the middle Benue Trough, Nigeria AK Joshua, I Anthony John, ED Ikechukwu, AO Ebuka Water Practice & Technology 18 (12), 3347-3364 , 2023 2023 Citations: 26
Extrication of CBM Wellbore Fire Explosion Paradox in Enugu, South Eastern, Nigeria. AJ Ilozobhie, DI Egu, OE Agbasi, A Szafarczyk Petroleum & Coal 65 (4) , 2023 2023 Citations: 2
Gas Lift Modeling: A Viable Option for Oil Production Optimization DI Egu, AJ Ilozobhie, HA Obalola, C Ebenyi, JB Okpata Asian Journal of Applied Science and Technology (AJAST) 7 (4), 13-20 , 2023 2023 Citations: 2
Retrospective appurtenance of Euler and Werner deconvolution contiguity for source depth excogitation of Bouguer anomalies in the Benue Trough, Nigeria AJ Ilozobhie, JS Ejepu, A Szafarczyk, OE Agbasi, NJ Inyang, DI Egu Journal of Sedimentary Environments 8 (3), 491-505 , 2023 2023 Citations: 1
Improving Resolution Qualities in Low P-impedance Sand Channels with Synthetic and Recursive Seismic Modeling Techniques AJ Ilozobhie, DI Egu, HA Obalola, OM Mzough Australian Journal of Basic and Applied Science 17 (12), 20-28 , 2023 2023
A Review of Multiphase Flow Modeling in Horizontal and Vertical Wells AJ Ilozobhie, DI Egu, HA Obalola International Journal of Novel Research and Development (IJNRD) 8 (10), 1-12 , 2023 2023
Enhancing reservoir stimulation through mathematical remodeling of pre-flush acidizing volume algorithm for different reservoir flow geometries JC Osuala, DI Egu, AJ Ilozobhie, BO Nwojiji SPE Nigeria Annual International Conference and Exhibition, D021S011R001 , 2022 2022 Citations: 3
Cogent Prognostics of Mellowed Wax Ubiety Temperature Modeling of Nigerian Crude Oil DI Egu, AJ Ilozobhie, J Osuala SPE Nigeria Annual International Conference and Exhibition, D031S024R005 , 2022 2022
Elliptical Mathematical Scholium of Petrophysical Modulation of Volume of Shale Paradigm from Linear and Non-Linear Confluxibilities AJ Ilozobhie, DI Egu International Center for Research and Resources Development (ICRRD) journal … , 2022 2022
SPE-208223-MS Adumbrative Heterodox Dictum of Wellbore Aggregates From Sapient Recovery Factor Penchants For Honed Field Praxis D Egu, A Ilozobhie Available at SSRN 5082761 , 2021 2021
Cerebral chronological corollary perusal for blitzing fire paroxysm and pipeline attrition in Nigeria DI Egu, AJ Ilozobhie SPE Nigeria Annual International Conference and Exhibition, D031S021R009 , 2021 2021 Citations: 3
Adumbrative heterodox dictum of wellbore aggregates from sapient recovery factor penchants for honed field praxis DI Egu, AJ Ilozobhie SPE Nigeria Annual International Conference and Exhibition, D031S019R007 , 2021 2021 Citations: 4
MOST CITED SCHOLAR PUBLICATIONS
Scrutinate proclivity of regional aquifer hydraulic parameters: Apriorisms for borehole failures within parts of the middle Benue Trough, Nigeria AK Joshua, I Anthony John, ED Ikechukwu, AO Ebuka Water Practice & Technology 18 (12), 3347-3364 , 2023 2023 Citations: 26
Dynamic reservoir sand characterization of an oil field in the Niger Delta from seismic and well log data AJ Ilozobhie, DI Egu Arabian journal of Geosciences 14 (10), 853 , 2021 2021 Citations: 9
Correlative modeling techniques to reducing uncertainties in a complex marginal field in the Niger Delta. AJ Ilozobhie, DI Egu Global Journal of Pure and Applied Sciences 24 (2), 202-213 , 2018 2018 Citations: 8
Examining variations of contaminants in Petroleum products in Nigeria DI Egu, AJ Ilozobhie International journal of Natural and Applied Sciences 10 (1&2), 109-116 , 2015 2015 Citations: 6
Effective Field Development Management of a gas field in the Niger Delta DI Egu SPE Nigeria Annual International Conference and Exhibition, SPE-172425-MS , 2014 2014 Citations: 6
Economic evaluation modelling of a gas field for effective reservoir management in the Niger Delta, Nigeria AJ Ilozobhie, DI Egu International journal of Natural and Applied Sciences 9 (1&2), 44-49 , 2014 2014 Citations: 6
Predicting the Behaviors of Multilayered Reservoirs to Cummulative Production in a Commingled Zone AJ Ilozobhie, DI Egu International Journal of Natural and Applied Science 8 (1), 495-582 , 2013 2013 Citations: 6
Adumbrative heterodox dictum of wellbore aggregates from sapient recovery factor penchants for honed field praxis DI Egu, AJ Ilozobhie SPE Nigeria Annual International Conference and Exhibition, D031S019R007 , 2021 2021 Citations: 4
Retrospective Sagacity of Pristine Tacks in Aquifer Influx Computations for Finite Aquifer Nexus DI Egu SPE Nigeria Annual International Conference and Exhibition, D013S009R003 , 2020 2020 Citations: 4
Astute expository of vacillation attributes of geoseismo-thermal ruminative of the Turonian Maastrichtian Fika Shale in parts of the Bornu Basin, North-Eastern Nigeria DI Egu, AJ Ilozobhie SPE Nigeria Annual International Conference and Exhibition, D013S007R001 , 2020 2020 Citations: 4
Enhancing reservoir stimulation through mathematical remodeling of pre-flush acidizing volume algorithm for different reservoir flow geometries JC Osuala, DI Egu, AJ Ilozobhie, BO Nwojiji SPE Nigeria Annual International Conference and Exhibition, D021S011R001 , 2022 2022 Citations: 3
Cerebral chronological corollary perusal for blitzing fire paroxysm and pipeline attrition in Nigeria DI Egu, AJ Ilozobhie SPE Nigeria Annual International Conference and Exhibition, D031S021R009 , 2021 2021 Citations: 3
Determination of the degree of contaminants of different refined products from Kaduna refinery DI Egu SPE Nigeria Annual International Conference and Exhibition, SPE-193530-MS , 2018 2018 Citations: 3
Extrication of CBM Wellbore Fire Explosion Paradox in Enugu, South Eastern, Nigeria. AJ Ilozobhie, DI Egu, OE Agbasi, A Szafarczyk Petroleum & Coal 65 (4) , 2023 2023 Citations: 2
Gas Lift Modeling: A Viable Option for Oil Production Optimization DI Egu, AJ Ilozobhie, HA Obalola, C Ebenyi, JB Okpata Asian Journal of Applied Science and Technology (AJAST) 7 (4), 13-20 , 2023 2023 Citations: 2
Plausibility of Hydrocarbon Potential Analytics of Archie’s Model by Cementation Factor Pliability in Shaly Sand Reservoir AJ Ilozobhie, DI Egu Asian Journal of Applied Sciences 8 (1) , 2020 2020 Citations: 2
High resolution infill drilling modeling: A viable tool for effective field development and optimization AJ Ilozobhie, DI Egu Journal of Petroleum and Gas Engineering 8 (1), 1-20 , 2017 2017 Citations: 2
Characterization of reservoir sands from seismic and well log data in the Niger delta AJ Ilozobhie, DI Egu World Journal of Applied Science and Technology 9, 130-140 , 2017 2017 Citations: 2
Retrospective appurtenance of Euler and Werner deconvolution contiguity for source depth excogitation of Bouguer anomalies in the Benue Trough, Nigeria AJ Ilozobhie, JS Ejepu, A Szafarczyk, OE Agbasi, NJ Inyang, DI Egu Journal of Sedimentary Environments 8 (3), 491-505 , 2023 2023 Citations: 1
Static and Dynamic Reservoir Sands Characterization of An Oil Field in The Niger Delta from Seismic and Well Log Data A Ilozobhie, DI Egu Asian Journal of Applied Science and Technology (AJAST),(Quarterly … , 2019 2019 Citations: 1