Article
Chemistry, Physical
Rohit Kumar Saw, Prathibha Pillai, Ajay Mandal
Summary: In recent decades, low salinity water flooding (LSWF) has gained attention for its effectiveness in oil recovery. However, there is a lack of studies in the literature on the potential of using Ionic Liquids (ILs) as candidates for chemical enhanced oil recovery (CEOR) combined with LSWF. This study evaluates the synergistic effect of ILs with varying chain lengths with low saline ion tuned seawater (ITSW) for enhanced oil recovery from carbonate reservoirs. The analysis shows that ILs demonstrate a better synergistic effect with ITSW, reducing interfacial tension, altering rock wettability, and exhibiting less adsorption density at the reservoir temperature. ILs with the longest chain length ([C12mim] [BF4]) show superior properties and significantly increase oil recovery in low saline ITSW.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
Felipe de O. Apolinario, Adolfo P. Pires
Summary: Low salinity waterflooding involves injecting water with lower salt concentration than the connate water. The pH and the amount of dissolved cations in the water affect cation exchange and residual oil mobilization. This study presents a solution for low salinity slug injection using seawater, considering three dissolved cations and pH effects. The solution shows that pH effects occur near the injection point due to high adsorption rate and creates small regions with salinity changes. The appearance of water and oil banks along the flooding is important for the design of chemical enhanced oil recovery techniques.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Energy & Fuels
Rohit Kumar Saw, Ajay Mandal
Summary: The low salinity water flooding (LSWF) technique is cost-effective and environmentally friendly, but its mechanisms are not yet clear. Recovery in LSWF depends on fluid/fluid and rock/fluid interactions. This study investigated both interactions and found different optimal conditions for improved oil recovery. Rock/fluid interaction showed an incremental recovery of 14%, while fluid/fluid interaction showed an incremental recovery of 7% over simple seawater injection. Results highlight the importance of considering both interactions and wettability alteration in LSWF design.
Review
Energy & Fuels
Afeez Gbadamosi, Shirish Patil, Dhafer Al Shehri, Muhammad Shahzad Kamal, S. M. Shakil Hussain, Emad W. Al-Shalabi, Anas Mohammed Hassan
Summary: This article reviews the combination of low salinity waterflooding (LSWF) and chemical enhanced oil recovery (EOR) for improving oil production in reservoirs. Experimental and modeling results show that the combination of LSWF and chemical EOR is more efficient than individual EOR methods.
Article
Geosciences, Multidisciplinary
Abbas Shahrabadi, Parham Babakhani Dehkordi, Fatemeh Razavirad, Reza Noorimotlagh, Masoud Nasiri Zarandi
Summary: The study found that low salinity water injection has a significant effect on releasing trapped oil, and smart water flooding achieves the maximum oil recovery. Low salinity water and smart water have a significant impact on relative permeability curves, indicating wettability alteration.
NATURAL RESOURCES RESEARCH
(2022)
Article
Chemistry, Physical
Jie Cao, Yingpeng Chen, Xiujun Wang, Jian Zhang, Ying Li, Zhao Hua, Xinming Wang, Shang Zhao
Summary: This paper proposes a novel Janus graphene nanofluid that enhances the low salinity water oil flooding performance. The nanofluid alters the oil-water interface and rock surface properties, resulting in improved oil recovery during low salinity water flooding.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Ranjan Phukan, Rahul Saha
Summary: A low salinity surfactant (LSS) system was developed to enhance the performance of immiscible surfactant alternating gas/CO2 (SAG) flooding in sandstone reservoir cores. LSS solutions showed positive impacts on various mechanisms responsible for enhanced oil recovery (EOR), including reducing surface and interfacial tension, altering wettability, improving CO2-foam stability, and decreasing surfactant adsorption.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Daiyin Yin, Wei Zhou
Summary: This paper studies the feasibility of combining deep profile control with cyclic water injection to improve oil recovery in fractured low-permeability reservoirs during the high water cut stage, and analyzes the mechanisms of enhanced oil recovery. The results show that in-depth profile control and cyclic water injection can be synchronized to further increase oil recovery.
Review
Energy & Fuels
Yongsheng Tan, Qi Li, Liang Xu, Abdul Ghaffar, Xiang Zhou, Pengchun Li
Summary: This study provides a detailed review of CO2 enhanced oil recovery (EOR) in carbonate reservoirs and discusses the characteristics of carbonate reservoirs, various CO2 injection schemes, and the mechanisms of CO2-oil and CO2-fluid-rock interactions. The findings of this study contribute to a better understanding of the CO2 EOR mechanism in carbonate reservoirs and suggest future research directions.
Article
Energy & Fuels
Moussa Taleb, Farad Sagala, Afif Hethnawi, Nashaat N. Nassar
Summary: This study successfully synthesized novel and stable faujasite nanoparticles without the need for surface modifications under low-salinity water, effectively changing the rock wettability from strong oil wet to strong water wet, and demonstrated their effectiveness as EOR agents in carbonate cores.
Article
Polymer Science
Yaser Ahmadi, Mohamed Arselene Ayari, Meysam Olfati, Seyyed Hossein Hosseini, Amith Khandakar, Behzad Vaferi, Martin Olazar
Summary: This study investigates the effect of green polymeric nanoparticles on the interfacial tension (IFT) and wettability of carbonate reservoirs for enhanced oil recovery (EOR). The performance of xanthan/magnetite/SiO2 nanocomposites and green materials, such as eucalyptus plant nanocomposites and walnut shell nanocomposites, were compared through spontaneous imbibition tests. The results showed that eucalyptus plant nanocomposites performed better than walnut shell nanocomposites in reducing contact angle (CA) and IFT under different salinities. The EOR of carbonate rocks was improved with eucalyptus plant nanocomposites at specific salinity concentrations.
Review
Polymer Science
Anas M. Hassan, Emad W. Al-Shalabi, Mohammed A. Ayoub
Summary: This study investigates the feasibility of improving polymer displacement technology in high temperature, high salinity oil carbonate resources using optimized polymers and hybrid methods. The selected novel polymers exhibit stability and tolerance, whereas adding alkali-surfactant can enhance mobility control and reduce interfacial tension, thus increasing displacement efficiency.
Review
Energy & Fuels
Siyan Liu, Chi Zhang, Reza Barati Ghahfarokhi
Summary: This study investigated advanced waterflooding techniques such as low salinity waterflooding in carbonate reservoirs to maintain economic profit and improve oil production efficiency. The Lattice-Boltzmann method (LBM) is identified as a promising framework for simulating advanced waterflooding due to its flexibility, accuracy, and parallel efficiency in modeling pore-scale fluid flow within complex structures.
Article
Energy & Fuels
Shuoshi Wang, Onyekachi Ogbonnaya, Changlong Chen, Na Yuan, Benjamin Shiau, Jeffrey H. Harwell
Summary: This study focuses on the development of a low-temperature in situ CO2 enhanced oil recovery (ICE) system using urease-catalyzed urea hydrolysis. The experimental results demonstrate the high tertiary recovery potential of this system under low-temperature conditions.
Article
Chemistry, Multidisciplinary
Ehsan Jafarbeigi, Yaser Ahmadi, Mohsen Mansouri, Shahab Ayatollahi
Summary: This study evaluates the performance of injecting ZnO-gamma Al2O3 nanoparticles in smart water (SMW) to enhance oil recovery. It investigates the effects of nanoparticles on contact angle, interfacial tension, and oil production using core flooding tests. The results showed that the introduction of ZnO-gamma Al2O3 nanoparticles reduced interfacial tension and improved oil recovery.
Article
Energy & Fuels
M. Fouad Snosy, Mahmoud Abu El Ela, Ahmed El-Banbi, Helmy Sayyouh
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2020)