Article
Energy & Fuels
Yakubu Balogun, Draco Iyi, Nadimul Faisal, Babs Oyeneyin, Gbenga Oluyemi, Ruissein Mahon
Summary: This study investigated the effect of temperature on oil-water relative permeability through experiments, revealing that the relative permeability is influenced by temperature, water injection flow rate, and oil viscosity. The profile of the relative permeability curve changes with varying temperature, oil viscosity, and water injection flow rate under the same operating conditions.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Qing Liu, Keliu Wu, Xiangfang Li, Bin Tu, Wen Zhao, Minxia He, Qiukai Zhang, Yunfei Xie
Summary: The oil-water relative permeability in extra-low-permeability reservoirs is influenced by pore throat size and pressure gradient. As displacement pressure increases, both oil and water relative permeability increase, leading to a decrease in residual oil saturation and an improvement in the range of two-phase flow zone.
Article
Engineering, Civil
Tingting Liu, Qingchun Yu
Summary: This paper presents an experimental approach to investigate the permeability of water vapor in shale. The results show that the permeability decreases significantly at the equilibrium of water vapor adsorption compared to the initial stage. This reduction in permeability is caused by the decrease in pore size and resulting pore throat blockage.
JOURNAL OF HYDROLOGY
(2022)
Article
Geochemistry & Geophysics
Ming Yue, Bingbing Li, Qiang Chen, Jidong Gao, Weiyao Zhu, Zhiyong Song
Summary: Spontaneous imbibition is considered an important method for enhanced oil recovery in unconventional reservoirs. This study experimentally investigated the variation characteristics of spontaneous imbibition at different pore scales and found a relationship between capillary diameter and imbibition recovery.
Article
Thermodynamics
Xudong Huang, Zhiqin Kang, Jing Zhao, Guoying Wang, Hongge Zhang, Dong Yang
Summary: The study examined the relationship between temperature field distribution and fracture connectivity in oil shale heated by water vapor. Using infrared thermal imaging and high temperature triaxial permeability testing, it was found that fractures became the main flow channels when the shale was heated, and the connectivity of fractures affected the heating area. The permeability of oil shale decreased from 10-15 m2 at 25°C to 10-17 m2 at 350°C, but increased rapidly above 350°C, indicating that temperature has a significant impact on shale permeability.
Article
Engineering, Civil
Yan Zhao, Qian Zhang, Xiao Chen
Summary: The study indicates that adsorbed water has a greater impact on smaller pores, and the mobility difference of water in corresponding pores can be used as a preliminary basis for evaluating the sealing performance of rocks and the effective permeability of CO2.
JOURNAL OF HYDROLOGY
(2021)
Article
Energy & Fuels
Dinesh Joshi, Neetish Kumar Maurya, Narendra Kumar, Ajay Mandal
Summary: This study investigates the use of silica nanoparticles, surfactants, and polymers in enhancing oil recovery from oil fields. The synergy of these components is shown to reduce interfacial tension, alter wettability, emulsify, and improve viscosity. Core flooding experiments demonstrate that the nanofluid system provides higher incremental oil recovery, particularly in high permeability cores. Different mechanisms, including wettability alteration and pore plugging, contribute to the increased recovery. This research provides valuable insights into the application of silica nanoparticles with surfactants and polymers as chemical enhanced oil recovery agents.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Mehrdad Zolfalizadeh, Saeed Zeinali Heris, Hadi Pourpasha, Mousa Mohammadpourfard, Josua P. P. Meyer
Summary: This study investigated the use of graphene nanoplate (GNP)/water nanofluids in a new shell-and-tube heat exchanger (STHE) and examined their impact on thermal efficiency, pressure drop, and heat transfer characteristics. The results showed that the addition of 0.06 wt.% GNP in the nanofluid improved the heat exchanger efficiency and heat transfer rate, but also increased pressure drops.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Physical
Shuai Zhao, Wanfen Pu
Summary: This study investigates the effect of PMs on oil-water relative permeability and oil-in-water emulsion stability, showing that PMs can exhibit superior dynamic migration and plugging performance in the core when matching pore-throat size. Moreover, PMs can reduce the negative influence of increased oil viscosity on mobility ratio to promote oil seepage.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2021)
Article
Energy & Fuels
Hooman Mohammadshahi, Hamidreza Shahverdi, Mohsen Mohammadi
Summary: In this study, the combination effects of non-ionic surfactants and smart water flooding in water-based EOR methods were investigated. The experimental results showed that the combination of smart water and surfactant injection could significantly improve the recovery factor compared to each method alone.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Petroleum
Ningyu Wang, Yifei Liu, Luming Cha, Matthew T. Balhoff, Masa Prodanovic
Summary: We demonstrate the potential of hydrophilic superparamagnetic nanoparticles in enhanced oil recovery (EOR) by directly observing their effect on oil mobilization. The experiments show that the application of a magnetic field to the nanoparticles can effectively reduce oil saturation and increase oil displacement.
Article
Thermodynamics
Haijun Wang, Weiguo Liu, Peng Wu, Xuelian Pan, Zeshao You, Jingsheng Lu, Yanghui Li
Summary: Accurate understanding of fluid flow patterns in hydrate-bearing sediments is crucial for economic exploitation. This study investigates the effects of hydrate saturation, effective stress, pore pressure, and osmotic pressure on gas flow patterns. The results show that as hydrate saturation increases, gas flow transitions from viscous flow to slip flow, with the slippage effect becoming more pronounced. Effective stress affects gas permeability's sensitivity to osmotic pressure changes, particularly at lower hydrate saturation. Pore pressure has a minimal impact on gas permeability and flow pattern, while reducing osmotic pressure weakens the slippage effect. Finally, a semi-empirical permeability model is developed based on experimental data.
Article
Chemistry, Physical
Arindom Phukan, Sanchia M. Kharphanbuh, Arpita Nath
Summary: This study investigates the behavior of laser-induced cavitation bubbles under the influence of an external electric field. The results show that the maximum radii of the cavitation bubbles increase in response to an increasing electric field, with a more pronounced effect in the presence of acetone medium and a decreasing effect in ethanol and water media due to their varying electrical conductivity.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Thermodynamics
Ziheng Li, Guoxiong Mei, Zhiwen Wu, Senlei Hou, Sihong He, Jianzhao Ding
Summary: A novel underwater oil storage method using a polymer flexible bladder is developed in this study. The permeability of the bladder is investigated through indoor experiments and numerical analysis, considering factors such as oil types, test environments, and pressure differences. An empirical formula for calculating the oil permeation rate is proposed, providing a theoretical basis for the practical application of this method.
Article
Engineering, Civil
Qiyong Zhang, Xiaoniu Yu, Wenwu Chen
Summary: Earthen sites have been damaged and can be protected by soil treatment with chemical additives. Polyvinyl alcohol and quicklime have been studied separately for this purpose. In arid northwest China, PVA can quickly increase soil strength while lime may have insufficient early strength. The combination of PVA and lime has the potential to complement each other's defects. This study analyzes the physical and mechanical properties of the PVA and lime composite soil and discusses its microscopic properties. The optimal ratio for the composite soil applied to earthen sites in northwest China is 10% lime and 1.0% PVA.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Energy & Fuels
Mohammadali Ahmadi, Zhangxin Chen
Article
Multidisciplinary Sciences
Mohammadali Ahmadi, Zhangxin Chen
Article
Energy & Fuels
Mohammadali Ahmadi, Zhangxin Chen, Matthew Clarke, Eugene Fedutenko
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2020)
Article
Energy & Fuels
Mohammadali Ahmadi, Zhangxin Chen
Summary: Using molecular dynamics simulation, this study evaluated the interactions between asphaltene and anionic surfactants under thermodynamic conditions close to thermal-based oil recovery. The presence of a benzene ring in a surfactant structure was found to enhance interactions, especially van der Waals interactions. Furthermore, the position and number of heteroatoms in asphaltene architecture play a crucial role in its behavior in a solution.
Article
Multidisciplinary Sciences
Mohammadali Ahmadi, Zhangxin Chen
Summary: This study investigates molecular interactions between anionic surfactants, steam, and bitumen in high-temperature and high-pressure conditions. The findings suggest that adding surfactant molecules to the steam phase can enhance the interaction energy between steam and bitumen, as well as improve steam emulsification capability by decreasing interfacial tension between bitumen and steam. Asphaltene architecture also plays a significant role in interfacial behavior in such systems.
SCIENTIFIC REPORTS
(2021)
Article
Thermodynamics
Mohammadali Ahmadi, Zhangxin Chen
Summary: This paper investigates the unclear mechanisms contributing to bitumen recovery under a steam-anionic surfactant co-injection process through molecular dynamics simulation. The simulation results reveal that sulfur on resin molecules can negatively affect the oil detachment process from a quartz surface. Increasing the pumping force can improve the oil detachment process when the resin contains sulfur.
Article
Energy & Fuels
Mohammadali Ahmadi, Zhangxin Chen
Summary: Emulsion formation during bitumen production is a significant obstacle that requires special treatment. This paper investigates different types of emulsions and their interactions between water and bitumen to comprehensively evaluate the emulsification process in a surfactant-assisted thermal bitumen recovery method. Molecular analyses reveal that surfactants enhance the interaction between water/steam and bitumen in emulsions, resulting in higher interaction energy. Additionally, the surfactant improves the hydrogen-bonding network between bitumen polar fractions and the aqueous phase. This research provides fundamental insights into the emulsification process during surfactant-steam co-injection processes, which are crucial for the formulation of surfactants in thermal-based processes.
Review
Chemistry, Physical
Mohammadali Ahmadi, Ehsan Aliabadian, Benjieming Liu, Xuantong Lei, Pooneh Khalilpoorkordi, Qingfeng Hou, Yuanyuan Wang, Zhangxin Chen
Summary: A comprehensive understanding of interfacial behavior in water/oil/surfactant systems is crucial for evaluating the performance of emulsions in various industries. This review summarizes the fundamentals and progress of dissipative particle dynamics (DPD) simulation in studying colloidal and interface systems, particularly surfactant/water/oil mixtures.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Chemical
Mohammadali Ahmadi, Matthew Clarke, Zhangxin Chen
Summary: Heavy oil and bitumen play a crucial role in Canada's energy resources, and in-situ thermal methods are the primary approaches used to produce them. Researchers used molecular dynamics simulation to study the rheological behavior of bitumen under different temperatures, revealing that the size and polarity of bitumen fractions affect its rheological behavior.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Thermodynamics
Mohammadali Ahmadi
Summary: This study proposes a method that combines fuzzy logic and genetic algorithm to predict the amount of wax deposition. Using different statistical indexes, the method shows high performance and integrity in determining wax deposition values. The advantages of this method include wide applicability and simple utilization.
Article
Biochemistry & Molecular Biology
Mohammadali Ahmadi, Zhangxin Chen
Summary: Using molecular dynamics (MD) simulation, the study evaluated the wettability alteration during steam injection for bitumen and heavy oil recovery. It was found that higher asphaltene content led to higher adsorption energy between bitumen/heavy oil and quartz surfaces. At elevated temperatures, the quartz surfaces became more oil-wet, while at ambient conditions, they were highly water-wet. These findings provide insights into wettability alteration during in situ thermal processes for bitumen and heavy oil recovery.
Article
Thermodynamics
Mohammadali Ahmadi, Qingfeng Hou, Yuanyuan Wang, Xuantong Lei, Benjieming Liu, Zhangxin Chen
Summary: CO2/N2 switchable surfactants have attracted attention in enhanced oil recovery due to their environmental and economic benefits. This study evaluated the performance of different surfactant mixtures in water/dodecane systems and investigated the effects of molecular structure and surfactant concentration on emulsification and demulsification processes triggered by CO2/N2 injection.
Article
Thermodynamics
M. A. Clarke, Z. Chen, M. Ahmadi
Summary: This paper presents an initial attempt to use an equation of state (EOS) to compute the liquid solution properties of aqueous amino acids at elevated pressures. It evaluates the performance of two different EOSs, Cubic Plus Association (CPA) and Trebble-Bishnoi (TB), for correlating methane hydrate equilibrium in amino acid solutions.
FLUID PHASE EQUILIBRIA
(2023)
Correction
Energy & Fuels
Mohammad Ali Ahmadi
Article
Energy & Fuels
Mohammadali Ahmadi, Zhangxin Chen
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2020)
