Article
Energy & Fuels
Masoumeh Amiri, Mobeen Fatemi, Ebrahim Biniaz Delijani
Summary: The study investigates the effects of the hybrid application of low-salinity and polymer on the properties of brine/rock and brine/oil interfaces. Experimental results show that the aqueous salinity and polymer concentration have an influence on the interfacial tension, wettability, and zeta potentials.
Article
Chemistry, Physical
Brayan F. Garcia, Soheil Saraji
Summary: This study examines interfacial rheology and polar component dynamics in crude oil and brine systems with different salinities. It reveals that diffusion/adsorption processes are the dominant relaxation mechanisms and transient interfacial rheology plays a crucial role in defining final apparent interfacial properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Thermodynamics
Sihai Li, Shicheng Zhang, Huilin Xing, Yushi Zou
Summary: The introduction of CO2 in deep formations has complex effects on geochemical/geophysical processes, CO2 geological storage, and oil/gas recovery. Previous studies have focused on long-term geochemical reactions in low carbonate content reservoirs, neglecting the short-term CO2-brine-rock interaction in carbonate-rich formations. This study quantifies the properties of carbonate-rich shale reservoirs after CO2 fracturing and reveals the alteration mechanisms through soaking experiments and multi-scale tests.
Article
Chemistry, Multidisciplinary
Ahmed M. Saad, Stefano Aime, Sharath Chandra Mahavadi, Yi-Qiao Song, Maxim P. Yutkin, David Weitz, Tadeusz W. Patzek
Summary: We investigate the formation and properties of crude oil/water interfacial films. The time evolution of interfacial tension suggests competition between different populations of surface-active molecules. The interface rheology is dominated by elasticity, and the chemical composition of interfacial films is affected by the composition of the aqueous phase. Furthermore, our solution exchange experiments reveal a change in film composition, indicating a potentially important crude oil recovery mechanism.
Article
Energy & Fuels
Abubakar Isah, Mohamed Mahmoud, Muhammad Arif, Murtada Al Jawad, Abduljamiu O. Amao
Summary: Contact angle is a measurement of the wettability of solid surfaces, and the wettability of rock/oil/brine systems can be modified by using solvents for surface cleaning. This study found that different solvents used for cleaning the rock surface can have different effects on the wettability of the rock/oil/brine system.
Article
Engineering, Multidisciplinary
Masoud Baghelani, Navid Hosseini, Mojgan Daneshmand
Summary: This paper addresses the non-contact analysis of multi-component two-phase mixtures including immiscible liquids and solutions simultaneously by a single sensing structure with a wide dynamic range. The innovative measurement procedure of microwave split-ring resonators successfully measured low overall concentration of water as 1%. By employing multiple features such as frequency shifts of various harmonics of the resonator, the developed approach enables analyzing more complex mixtures with low Mean-Square-Errors in the range of 10-5 for the water-brine-oil mixture.
Article
Energy & Fuels
Zhongliang Hu, Layth Al-Ameri, Jabbar Gardy, Mahmoud Alhreez, Dongsheng Wen
Summary: This study introduces a novel method of in situ synthesizing nanoparticles in reservoirs to enhance oil recovery. The experiments show that this method can significantly improve the oil recovery efficiency and reveal the mechanisms of nanoparticles altering substrate wettability and forming interface barriers.
Article
Energy & Fuels
Hamed Farhadi, Shahab Ayatollahi, Mobeen Fatemi
Summary: The dynamic interfacial tension of crude oil/brine system was measured in a wide range of seawater salinity, revealing a trend where the IFT reduces as brine salinity increases, contrary to existing theories. A new model based on drift-diffusion theory was developed to explain this phenomenon, considering the current of oil molecules towards the oil-water interface and the resistance against this current caused by concentration gradient.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Abdelrahman O. Ezzat, Hamad A. Al-Lohedan, Ayman M. Atta
Summary: This study focuses on the preparation of new green oilfield chemicals based on ionic liquids with enhanced demulsification efficiency. Through modifications of the chemical structure, a new amphiphilic molecule was synthesized, showing promising demulsification performance at low doses and temperatures.
Article
Energy & Fuels
Gustavo Maya, Aurora L. Carreno Otero, Fabian L. Monares Bueno, Arnold R. Romero Bohorquez, Farid B. Cortes, Camilo A. Franco, Eduardo Manrique
Summary: Recent studies have identified wettability alteration as the primary consequence of adjusted brine composition water flooding (ABCW) and low-salinity water flooding (LSW). However, further research is needed to provide a phenomenological explanation and clarify the key components of the system (rock-oil-brine). This study focuses on determining the relevant variables for smart water effects by conducting static (contact angles) and dynamic tests (coreflooding). The results show that oil-brine ion exchange plays a significant role in explaining observed displacement efficiencies and pressure differentials.
Article
Fisheries
Xiaoting Zheng, Daisy Vanrompay, Gilbert Van Stappen, Adam F. Feyaerts, Patrick Van Dijck, Peter Bossier
Summary: In this study, three in vivo screening methods were proposed to identify the best candidates from 12 different EOCs. The results showed that some EOCs significantly increased the survival rate of brine shrimp and reduced the in vivo bioluminescence of V. campbellii. The immune gene expression assay was not able to accurately predict the survival rate of brine shrimp and was time-consuming and costly.
FISH & SHELLFISH IMMUNOLOGY
(2022)
Article
Energy & Fuels
Abubakar Isah, Mohamed Mahmoud, Muhammad Arif, Murtada Saleh Aljawad, Muhammad Shahzad Kamal
Summary: This study examines the effect of rock surface cleaning on the wettability of rock/oil/brine systems using pure quartz substrates. The results suggest that cleaning agents may not completely remove all adsorbed salts and crude oil components from the rock surfaces and may also adsorb onto the surfaces themselves, altering wettability. Surface energy and the presence of oxygen-containing and nonpolar functional groups play a significant role in determining the wetting behavior.
Article
Energy & Fuels
Lawrence Opoku Boampong, Joel T. T. Tetteh, Samuel Erzuah
Summary: A basic Stern model (BSM) is proposed to calculate the rock-brine-oil ζ-potential under high salinity conditions, considering the influence of dissolution reactions on the ζ-potential. The study shows that increasing the concentration of SO4(2-) ions can decrease smart water oil recovery in carbonate formations but improve it in quartz reservoirs. Meanwhile, a high concentration of Mg(2+) ions can reduce smart water oil recovery in both carbonate and quartz reservoirs. The presence of impurities can make carbonate reservoirs more water-wet and increase smart water oil recovery, while it can make sandstone reservoirs oil-wet and decrease smart water oil recovery. High pCO(2) can make both carbonate and sandstone reservoirs more water-wet and improve smart water oil recovery. The study emphasizes the importance of incorporating mineral impurities into geochemical reactions in surface complexation models for a more accurate reflection of surface chemistry.
Article
Chemistry, Physical
Zeinab Taherian, AmirHossein Saeedi Dehaghani, Shahab Ayatollahi, Riyaz Kharrat
Summary: This study investigates the liquid-liquid interactions during low-salinity water interaction through a series of experiments. The results show that the rate of migration of crude oil polar component towards the interface is affected by the heteroatom concentration, compaction of crude oil asphaltene fraction, and brine salinity. The interface interactions are influenced by several parameters such as dissolved ion type, brine concentration, and polar components concentration in crude oil. Furthermore, the solubility of crude oil polar species in the brine does not always increase with decreasing salinity.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Alisson. Paz, Bruna. L. Kuhn, Bruno. L. Hennemann, Vithoria. E. Priebe, Caroline. R. Bender, Marcos. A. Villetti, Helio. G. Bonacorso, Clarissa. P. Frizzo
Summary: This study evaluated the aggregation behavior of imidazolium-based dicationic ionic liquids containing ibuprofenate and ascorbate, and related it to the cation-anion interaction strength. The results showed that the ionic liquids with a less hydrophobic anion and more polar sites had a stronger cation-anion interaction strength and lower critical aggregation concentration. The strength of the cation-anion interaction reflected the aggregation properties and the packing of ionic liquid monomers at the air-water interface.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Energy & Fuels
Rasoul Mokhtari, Siavash Ashoori, Masoud Seyyedattar
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2014)
Article
Energy & Fuels
R. Mokhtari, E. Varzandeh, M. R. Rahimpour
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2013)
Article
Energy & Fuels
Javad Ghasemian, Siavash Riahi, Shahab Ayatollahi, Rasoul Mokhtari
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2019)
Article
Energy & Fuels
Rasoul Mokhtari, Shahab Ayatollahi, Mobeen Fatemi
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2019)
Article
Energy & Fuels
Samira Mohammadkhani, Benaiah U. Anabaraonye, Armin Afrough, Rasoul Mokhtari, Karen Louise Feilberg
Summary: A systematic study was conducted on crude oil-brine-rock interactions in tight chalk cores at reservoir conditions, revealing that polar components in the oil phase play a significant role in wettability alteration during ageing. Formation water and diluted seawater were found to be better candidates for enhanced oil recovery in the Dan field, and the modified flow zone indicator was likely the main variable responsible for higher oil recoveries observed in Tor core samples.
Article
Geosciences, Multidisciplinary
M. Bonto, M. J. Welch, M. Luthje, S. Andersen, M. J. Veshareh, F. Amour, A. Afrough, R. Mokhtari, M. R. Hajiabadi, M. R. Alizadeh, C. N. Larsen, H. M. Nick
Summary: Research on Carbon Capture and Storage (CCS) in the past two decades has seen significant progress globally, with leaders and energy-intensive industries cooperating to reduce CO2 emissions. While chalk formations were previously considered unsuitable for CO2 storage due to reactivity, recent studies suggest their potential. Additionally, safety and monitoring techniques for CO2 storage in chalk formations have been discussed in this work, along with an analysis of trapping mechanisms and potential effects on injectivity.
EARTH-SCIENCE REVIEWS
(2021)
Article
Energy & Fuels
Rasoul Mokhtari, Ali Hosseini, Mobeen Fatemi, Simon Ivar Andersen, Shahab Ayatollahi
Summary: This study investigates the effect of brine salinity on asphaltene precipitation and destabilization mechanisms during water-flooding in oil reservoirs. The findings suggest that the precipitation mechanism of asphaltene depends on brine salinity, with ions possibly playing a key role in promoting asphaltene precipitation under high salinity conditions.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Saeid Dowlati, Rasoul Mokhtari, Lena Hohl, Reinhard Miller, Matthias Kraume
Summary: CO2-switchable surfactants have selective surface-activity that can be activated or deactivated by adding or removing CO2. They are mainly cationic and can be activated by the protonation of a nitrogen-containing group upon sparging CO2 gas. CO2-switchable superamphiphiles can be formed by non-covalent bonding between components at least one of which is CO2-switchable. So far, CO2-switchable surfactants have been used in various types of colloids such as spherical and wormlike micelles, vesicles, emulsions, foams, and Pickering emulsions.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
Sayed Javad Hashemi, Faramarz Hormozi, Rasoul Mokhtari
Summary: This study proposes an optimal method for precise placement of sodium silicate gelants in a formation by controlling the gelation time. The method aims to enhance the effectiveness of these blocking agents in water shut-off, profile modification, and carbon storage projects.
Article
Energy & Fuels
Rasoul Mokhtari, Hamidreza M. Nick, Mohsen Farhadzadeh, Karen L. Feilberg
Summary: This study reassesses the role of sulfate in altering wettability and improving oil mobilization in chalk reservoirs using real reservoir material. The results show that reducing sulfate concentration in the displacing fluid improves the wettability of reservoir chalk, leading to enhanced oil mobilization.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Nutrition & Dietetics
Rasoul Mokhtari, Faezeh Ghalichi, Asghari Jafarabadi Mohammad, Ali Barzegar
PROGRESS IN NUTRITION
(2019)