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.
Review
Energy & Fuels
Wan-Li Kang, Bo-Bo Zhou, Miras Issakhov, Marabek Gabdullin
Summary: Low permeability oil and gas resources have great potential worldwide and have become the main focus of oil and gas development. Enhanced oil recovery (EOR) technologies have been developed to further improve crude oil production in low permeability reservoirs. This study provides a comprehensive review of EOR technologies and discusses the technical challenges, directions, and outlooks of EOR in low permeability reservoirs.
Review
Energy & Fuels
Amin Sharifi, Rohaldin Miri, Masoud Riazi
Summary: The surfactant EOR is considered a promising approach for enhancing oil recovery due to the changing energy supply and demand and the non-renewable nature of world oil reservoirs. However, surfactants face challenges such as high adsorption, low stability, and poor performance in harsh conditions like high temperature, high salinity, and dense carbonate rocks. There is currently no established procedure or framework for systematically selecting the best surfactant for EOR in dense carbonates.
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
Energy & Fuels
Emil R. Saifullin, Polina O. Putintseva, Rustam N. Sagirov, Mikhail A. Varfolomeev, Chengdong Yuan, Roman S. Pavelyev, Sergey A. Nazarychev, Aleksei O. Malahov, Lucia Akimushkina, Dmitrii A. Zharkov, Alexey O. Bykov, Ulukbek Mirzakimov
Summary: This study successfully synthesized three novel anionic-nonionic surfactants based on the nonionic surfactant NPEO and evaluated their effectiveness for enhanced oil recovery in high salinity water. The modified surfactants showed significant reduction in interfacial tension and improved wettability of the rock, leading to increased oil production. Filtration experiments indicated the great potential of these novel surfactants for enhanced oil recovery in high salinity reservoirs.
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
Energy & Fuels
Marzieh Saadat, Junyi Yang, Marcin Dudek, Gisle Oye, Peichun Amy Tsai
Summary: Rock wettability has a significant impact on oil extraction efficiency. Experimental studies at the pore-scale revealed that wettability alteration affects oil recovery from rocks. Factors such as network design, brine concentration and composition influence the efficiency of recovery processes.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Review
Chemistry, Multidisciplinary
Weipeng Yang, Jun Lu, Bing Wei, Haiyang Yu, Tianbo Liang
Summary: This review briefly summarizes recent advances in micromodel studies of surfactant flooding, showcasing the mechanisms of surfactant flooding demonstrated by micromodel studies and pore-scale findings that cannot be captured by traditional coreflood methods.
Article
Energy & Fuels
Davood Zivar, Peyman Pourafshary, Nikoo Moradpour
Summary: The study demonstrates that the low salinity surfactant (LSS) flooding method outperforms low salinity water (LSW) or surfactant flooding (SF) in reducing residual oil saturation (ROS). Experimental data shows a significant difference in ROS between LSS and SF within different ranges of capillary numbers.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Xuezhi Zhao, Fuxing Zhan, Guangzhi Liao, Weidong Liu, Xin Su, Yujun Feng
Summary: This study investigates the visualization of in situ generation of middle-phase microemulsion during surfactant enhanced oil recovery (EOR) and quantifies its contribution to the oil recovery factor.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(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)
Review
Energy & Fuels
Ahmed Bashir, Amin Sharifi Haddad, Roozbeh Rafati
Summary: Surfactant-based oil recovery processes are used to lower interfacial tension and change the wettability of rock in immiscible displacement processes. The key factors affecting this process are temperature, salinity, pH, surfactant concentration, and adsorption. Chemical enhanced oil recovery (cEOR) processes combine surfactants with other chemicals to exploit their synergy. This review study categorizes the role and displacement mechanisms of surfactants and discusses key factors for analyzing fluid displacement in porous media.
Review
Energy & Fuels
Omid Tavakkoli, Hesam Kamyab, Mahdi Shariati, Abdeliazim Mustafa Mohamed, Radzuan Junin
Summary: This study comprehensively reviews the positive effects of nanoparticles (NPs) on the performance of polymer and surfactant flooding in Enhanced Oil Recovery (EOR). The results show that NPs have great potential to improve the rheological properties of polymers, reduce interfacial tension, alter reservoir rock wettability towards more water-wet medium, and decrease surfactant adsorption on porous media.
Article
Chemistry, Multidisciplinary
Sanyuan Qiao, Qingwang Liu, Xian Zhang, Hongchang Che
Summary: A hyperbranched carboxylate-type polymer was synthesized and experimentally evaluated for enhanced oil recovery. It showed significant performance in reducing interfacial tension, increasing micellar solubilization, and had more advantages in low-permeability reservoirs, either used alone or in combination with sodium dodecylsulfate.
FRONTIERS IN CHEMISTRY
(2021)
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.