Outputs (26)

Investigating the flow behaviour of CO2 and N2 in porous medium using core flooding experiment (2021)
Journal Article
Mohammed, N., Abubakar, A., Enyi, G., Abba, M., Onukak, I., Saidu, B., …Yar’adua, H. (2022). Investigating the flow behaviour of CO2 and N2 in porous medium using core flooding experiment. Journal of Petroleum Science and Engineering, 208(E), 109753. https://doi.org/10.1016/j.petrol.2021.109753

Several researchers employed N2 to augment CH4 recovery efficiency and CO2 sequestration during the Enhanced Gas Recovery (EGR) process in consolidated rocks. To our knowledge, there has been limited data backing the reason why CO2 experienced a more... Read More about Investigating the flow behaviour of CO2 and N2 in porous medium using core flooding experiment.

The role of N2 as booter gas during Enhanced Gas Recovery by CO2 flooding in a porous medium (2021)
Journal Article
Mohammed, N., Abbas, A., & Enyi, G. (2021). The role of N2 as booter gas during Enhanced Gas Recovery by CO2 flooding in a porous medium. Journal of Natural Gas Science and Engineering, 93, 104051. https://doi.org/10.1016/j.jngse.2021.104051

Most research on CO2 flooding is focusing on CO2 storage than CH4 recovery and mostly simulation-based. To our knowledge, there have been limited reported experimental on CO2 injections capable of unlocking a high amount of the residual methane due t... Read More about The role of N2 as booter gas during Enhanced Gas Recovery by CO2 flooding in a porous medium.

Enhanced oil recovery through integration of ultrasound and polymer flooding (2020)
Thesis
Hassan, K. Enhanced oil recovery through integration of ultrasound and polymer flooding. (Thesis). University of Salford

Initially, when an oil well is drilled the oil gushes to the surface at high pressure. However, with time the pressure declines leaving more than 50% of the oil trapped in the reservoir. Even with the introduction of current technologies, more than 4... Read More about Enhanced oil recovery through integration of ultrasound and polymer flooding.

Enhanced gas recovery by nitrogen injection : the effects of injection velocity during natural gas displacement in consolidated rocks (2020)
Journal Article
Mohammed, N., Abbas, A., Enyi, G., Edem, D., & Suleiman, S. (2020). Enhanced gas recovery by nitrogen injection : the effects of injection velocity during natural gas displacement in consolidated rocks. Journal of Natural Gas Science and Engineering, 83, 103513. https://doi.org/10.1016/j.jngse.2020.103513

The choice of the flow velocity in EGR thus becomes important since higher injection rates could lead to premature
mixing of the fluids and lower injection rates generally provide longer resident times for the fluids in
contact and indirectly incre... Read More about Enhanced gas recovery by nitrogen injection : the effects of injection velocity during natural gas displacement in consolidated rocks.

Alternating N2 gas injection as a potential technique for enhanced gas recovery and CO2 storage in consolidated rocks : an experimental study (2020)
Journal Article
Mohammed, N., Abbas, A., Enyi, G., Suleiman, S., Edem, D., & Abba, M. (2020). Alternating N2 gas injection as a potential technique for enhanced gas recovery and CO2 storage in consolidated rocks : an experimental study. Journal of Petroleum Exploration and Production Technologies, 10(8), 3883-3903. https://doi.org/10.1007/s13202-020-00935-z

The promotion of enhanced gas recovery (EGR) and CO2 storage is still shrouded in contention, and is not well
accepted, due to the excessive in-situ CO2 mixing with the nascent natural gas. This adulterates the recovered
CH4 and thus, results in a... Read More about Alternating N2 gas injection as a potential technique for enhanced gas recovery and CO2 storage in consolidated rocks : an experimental study.

Enhancing the performance of Xanthan gum in water-based mud systems using an environmentally friendly biopolymer (2020)
Journal Article
Akpan, E., Enyi, G., & Nasr, G. (2020). Enhancing the performance of Xanthan gum in water-based mud systems using an environmentally friendly biopolymer. Journal of Petroleum Exploration and Production Technologies, 10, 1933-1948. https://doi.org/10.1007/s13202-020-00837-0

Xanthan gum is commonly used in drilling fluids to provide viscosity, solid suspension, and fluid-loss control. However, it is sensitive to high temperatures and not tolerant of field contaminants. This paper presents an experimental study on the eff... Read More about Enhancing the performance of Xanthan gum in water-based mud systems using an environmentally friendly biopolymer.

Flow characteristics through gas alternating gas injection during enhanced gas recovery (2019)
Presentation / Conference
Mohammed, N., Abbas, A., Enyi, G., & Nasr, G. (2019, October). Flow characteristics through gas alternating gas injection during enhanced gas recovery. Presented at SPE Gas & Oil Technology Showcase and Conference, Dubai, UAE

Gas and liquid flooding using carbon dioxide (CO2), nitrogen (N2), or brine solution have become one of the promising enhanced gas (EGR) and oil recovery (EOR) technologies for residual hydrocarbons (HCs) enhancement in conventional oil and gas reser... Read More about Flow characteristics through gas alternating gas injection during enhanced gas recovery.

Water-based drilling fluids for high-temperature applications and water-sensitive and dispersible shale formations (2019)
Journal Article
Akpan, E., Enyi, G., Nasr, G., Yahaya, A., Ahmadu, A., & Saidu, B. (2019). Water-based drilling fluids for high-temperature applications and water-sensitive and dispersible shale formations. Journal of Petroleum Science and Engineering, 175(Apr 19), 1028-1038. https://doi.org/10.1016/j.petrol.2019.01.002

This study examines the effectiveness of sodium erythorbate, potassium formate, and polyethylene glycol for the formulation of high-performance water-based drilling fluids. High-performance water-based drilling fluids are environmentally-friendly, re... Read More about Water-based drilling fluids for high-temperature applications and water-sensitive and dispersible shale formations.

Stabilizing biopolymers in water-based drilling fluids at high temperature using antioxidants, a formate salt, and polyglycol (2018)
Journal Article
Akpan, E., Enyi, G., Nasr, G., & Yahaya, A. (2018). Stabilizing biopolymers in water-based drilling fluids at high temperature using antioxidants, a formate salt, and polyglycol. Journal of Engineering Technology, 7(2), 469-486

Biopolymers degrade in water-based drilling fluids when exposed to high temperatures for some time, thus leading to hole-cleaning problems such as stuck pipe. To stabilise biopolymers in drilling fluids, the mechanisms by which they degrade at elevat... Read More about Stabilizing biopolymers in water-based drilling fluids at high temperature using antioxidants, a formate salt, and polyglycol.

Compressed natural gas : gas distribution option for Sub-Saharan West Africa (2018)
Journal Article
Enyi, G., Welekwe, D., & Appah, D. (2018). Compressed natural gas : gas distribution option for Sub-Saharan West Africa. Journal of Engineering Technology, 7(2), 356-376

Natural gas production in Sub-Saharan West African is projected to grow annually by 5% from 2010 to 2040. The distribution of this gas is vital to economic growth in the sub region. Compressed Natural Gas (CNG) which is natural gas that has been comp... Read More about Compressed natural gas : gas distribution option for Sub-Saharan West Africa.