Article
Energy & Fuels
Aleksandr Mamonov, Panagiotis Aslanidis, Novia Fazilani, Tina Puntervold, Skule Strand
Summary: The crude oil-brine-rock (COBR) system involves complex interactions between polar organic molecules in crude oil, inorganic ions from the brine phase, and charged mineral surfaces. This study focused on determining the adsorption trends of polar organic components (POCs) in different sandstones and their impact on wettability. The results showed that the intensity of POC adsorption was closely related to sandstone mineralogy, and the adsorption significantly affected capillary forces and wettability.
Article
Geosciences, Multidisciplinary
Mohammad Gholinezhadateni, Behzad Rostami
Summary: This study investigated the wettability alteration of the calcite surface using different aqueous phases and advanced surface analysis tools. The results showed significant effects of different aqueous phases on surface adsorption of carboxylic components, with the adsorption controlled by interactions of negative ions formed during carboxylic acid dissociation with positive salt ions in brine solvents.
NATURAL RESOURCES RESEARCH
(2021)
Article
Energy & Fuels
Mohammad Fattahi Mehraban, Seyed Amir Farzaneh, Mehran Sohrabi
Summary: This study investigates the effect of salinity on oil/water interfacial interactions and identifies that low salinity water injection promotes the formation of water microdispersion at the oil/water interface.
Article
Engineering, Environmental
Liang Wang, Sijia Ni, Hao Wang, Yiwei Sun, Shenguang Fu, Chenhao Tian, Yuechen Zhao, Jintuo Zhu, Rongkun Pan
Summary: In this study, alkyl polyglycoside (APG) and polyacrylamide (PAM) were used to enhance wetting and convert medium wettability. The effects of these reagents on the wettability alteration mechanism and desorption characteristics of coal were investigated. The results showed that APG treatment increased the surface energy, hydrogen bonds, and oxygen-containing functional groups of coal, while PAM treatment had the opposite effect. Increasing the number of hydrogen bonds and oxygen-containing functional groups improved wettability and reduced the interaction force between coal and methane molecules. APG and PAM promoted gas desorption, with APG treatment yielding better results.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Energy & Fuels
Mohammad Hasan Badizad, Mohammad Mehdi Koleini, Hugh Christopher Greenwell, Shahab Ayatollahi, Mohammad Hossein Ghazanfari
Summary: This research provides an atomistic perspective on how ions impact the microstructural features of an oil-contaminated calcite surface. It shows that divalent cations, especially calcium ions, play a crucial role in promoting the desorption of oil molecules, while sulfate ions assist in preventing the reabsorption of carboxylate compounds.
Article
Chemistry, Multidisciplinary
Xiao Deng, Muhammad Shahzad Kamal, Shirish Patil, Syed Muhammad Shakil Hussain, Mohamed Mahmoud, Dhafer Al-Shehri, Emad W. Al-Shalabi
Summary: Interfacial tension (IFT) reduction and wettability alteration (WA) are important mechanisms for enhanced oil recovery (EOR). They work together to release trapped oil in oil-wet formations. However, studies have shown conflicting observations about their coupled effect, necessitating further research. This study used oil-aged Indiana limestone samples to represent oil-wet carbonate rocks and conducted tests to assess wettability and IFT. Results showed that higher IFT values and stronger WA performance led to faster and higher oil recoveries. The importance of IFT reduction was enhanced in higher permeability conditions, while the importance of WA was enhanced in lower permeability conditions.
Article
Energy & Fuels
Edward Andrews, Ann Muggeridge, Alistair Jones, Samuel Krevor
Summary: Low salinity water flooding is a promising enhanced oil recovery technique, but it is currently difficult to predict which systems will respond favorably. This study provides insights into the role of pore geometry and topology on oil mobilization during low salinity water flooding.
Article
Energy & Fuels
Maissa Souayeh, Rashid S. Al-Maamari, Mahvash Karimi, Mohamed Aoudia
Summary: Combining low salinity nonionic and anionic surfactants can effectively alter the wettability of oil-wet calcite under high salinity conditions, resulting in improved oil recovery rates. The selection of the proper surfactant class is crucial for successful oil recovery, as different surfactant combinations can lead to varying levels of oil recovery efficiency.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Z. Zhang, Madhar Sahib Azad, J. J. Trivedi
Summary: This study addresses research gaps in understanding the dominant recovery mechanisms during surfactant flooding in unconventional, oil-wet reservoirs by investigating physico-chemical interactions and microfluidic studies using zwitterionic surfactant solutions. The observations show that significant IFT reduction and wettability alteration are both crucial for successful oil displacement in water-wet media during surfactant flooding in oil-wet formations.
Article
Chemistry, Physical
Sivabalan Sakthivel, Safwat Abdel-Azeim, Vishnu Chandrasekharan Nair
Summary: Chemical enhanced oil recovery often involves the injection of chemicals to alter the rock-oil-water interactions and mobilize the oil towards the production well. This study investigated the effect of functionalized silica nanofluids on improving oil recovery in a carbonate reservoir as a function of the oil acidity. Through experiments and simulations, the study revealed the complex mechanisms behind oil recovery and provided insights into the applicability of nanofluids for enhanced oil recovery.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Chemical
Mei Liu, Shijing Xu, Shaohua Zhu, Jiazhong Wu, Bofeng Bai, Chengzhen Sun
Summary: This study reveals the effects of ions on the oil-water wettability of quartz surfaces and the mechanism behind it. The results show that alkaline salt solutions can greatly alter the wettability of the surface to become more water-wet, with sodium chloride and potassium chloride solutions being more effective.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Chemical
Chengzhen Sun, Mei Liu, Shijing Xu, Shaohua Zhu, Jiazhong Wu, Bofeng Bai
Summary: The experimental study showed that inorganic salt ions can change the wettability of rock surfaces, making them more water-wet. It was observed that CaCl2 solutions had a more significant effect than NaCl solutions, and Na2SO4 solutions were more effective than NaCl solutions in altering the surface properties.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Energy & Fuels
Fabio Bordeaux Rego, Esmail Eltahan, Kamy Sepehrnoori
Summary: This study investigates the potential of increasing oil recovery in tight and shale formations by modifying fracturing fluid compositions. It is found that reducing salinity can decrease oil adhesion on rock surfaces, leading to improved oil displacement.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Materials Science, Coatings & Films
Jianlin Yang, Tianlu Yu, Xiangpeng Jiang, Xu Zhang, Jing Guo, Yaohan Chen, Shenghai Li, Zhecun Wang
Summary: A self-cleaning coating composed of hydrated manganese hydrogen phosphate (MnHPO4·3H2O, MHP) has been developed to eliminate spilled viscous crude oil. The coating, which has abundant surface hydrogen phosphate groups, exhibits exceptional binding affinity for water even when fouled by crude oil. Copper mesh coated with MHP can separate highly viscous crude oil/water mixtures and crude oil-in-water emulsions before being pre-wetted with water, offering promising applications in spilled crude oil remediation.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Mahsheed Rayhani, Mohammad Simjoo, Mohammad Chahardowli
Summary: Lowering the ionic strength of brine can generate stable w/o emulsions with a separated water volume as low as 5% of the total initial water. Ion-tuned solutions, especially the presence of Mg2+ cations, can boost emulsion longevity. The presence of SO42- in the brine solution shows strong potential for rendering surface wettability and reducing emulsion longevity.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
