Article
Engineering, Environmental
Ya Liu, Yunfeng Zhao, Ning Jiang, Wei Cheng, Dongwei Lu, Tao Zhang
Summary: This study reports a CO2-responsive material that can extract emulsified oil and demulsify oil droplets, allowing for separate reclamation of oil and surfactant. The material exhibits a high adsorption capacity for emulsified oil and can switch its surface wettability to achieve the separation of oil and surfactant. High rates of oil removal, oil recovery, and surfactant recovery are maintained during repeated adsorption/desorption operations.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Review
Energy & Fuels
Talha Majeed, Muhammad Shahzad Kamal, Xianmin Zhou, Theis Solling
Summary: The application of foam in the upstream petroleum industry has attracted attention, with stability being crucial for success, and nanoparticles playing a significant role in stabilizing the foam.
Article
Chemistry, Physical
Min Zhang, Wanli Kang, Hongbin Yang, Zhe Li, Xinxin Li, Bobo Zhou, Xin Kang, Menglan Li, Bauyrzhan Sarsenbekuly
Summary: This study investigates the application of erucic acid amidopropyl-betaine (EDAB) and sodium alkyl sulfate (SDS) in constructing worm-like micelle systems for enhanced oil recovery. The results demonstrate that under specific conditions, the EDAB/SDS system exhibits viscoelastic fluid behavior, forming longer linear worm-like micelles and larger network structures. The rheological properties of the EDAB/SDS system are influenced by pH, temperature, and salt concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Energy & Fuels
Mohamed Almobarak, Zangyuan Wu, Matthew B. Myers, Colin D. Wood, Nasser S. Al Maskari, Yongbing Liu, Renke Rommerskirchen, Ali Saeedi, Quan Xie
Summary: This study investigates the use of surfactant-based and alcohol-based chemicals to reduce the MMP in a methane-oil system at different temperatures. The results show that surfactant-based chemicals can effectively reduce the MMP at high temperatures, while alcohol-based chemicals have a limited effect. Increasing temperature improves the performance of the chemicals in reducing MMP, suggesting their effectiveness in high temperature reservoirs.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Jinjian Hou, Lingyu Sun
Summary: This study demonstrated the synergistic effect of using nanofluids and surfactants to enhance oil recovery from carbonate asphalt rocks. Nanofluids rendered the oil-wet calcite surface hydrophilic, while surfactants aided in the release of heavy oil. The combined use of nanofluids and surfactants resulted in altered wettability of the oil-wet calcite surface.
Article
Energy & Fuels
Ahmed Al-Ghamdi, Bashirul Haq, Dhafer Al-Shehri, Nasiru S. Muhammed, Mohamed Mahmoud
Summary: This study investigates the efficacy of green surfactants in sandstone reservoirs for chemical enhanced oil recovery. The results show that the RL formulation, consisting of rhamnolipid, alkyl polyglycoside (APG), and lecithin, performed the best in terms of phase behavior, interfacial tension, and core-flooding experiments, with a tertiary recovery of 24% and a total recovery of approximately 70%. These findings contribute to a better understanding of injection design and biosurfactant formulation selection for green enhanced oil recovery technology.
Article
Energy & Fuels
Mao Chen, Leiting Shi, Zhongbin Ye, Shanshan Zhu, Xiao Wang, Xuwei Liang, Zheng Shu, Hong Chen
Summary: This paper discusses the selection of functional monomers and optimal synthesis conditions for HVR, a hyperbranched copolymer aiming to enhance offshore heavy oil recovery. The effectiveness of HVR as a polymer for oil displacement was evaluated. Functional monomers AOS and OP-10 were identified and found to have high oil viscosity reduction rates above 90%. The synthesis of HVR was optimized using orthogonal design, and the optimal conditions were determined. HVR demonstrated significant improvement in heavy oil recovery in core flooding tests, with an additional recovery rate over 7% higher than that of conventional hydrophobically associating polymer.
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
Chemistry, Analytical
Molly C. McLaughlin, Bonnie McDevitt, Hannah Miller, Kaela K. Amundson, Michael J. Wilkins, Nathaniel R. Warner, Jens Blotevogel, Thomas Borch
Summary: This study investigated the efficacy of constructed wetlands in removing organic chemical additives from produced water and their environmental fate. The results showed that CW systems were able to effectively remove chemical additives from produced water, although these additives were still present in sediment samples collected downstream of discharges.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2021)
Article
Chemistry, Multidisciplinary
Ciera M. Wentworth, Alexander C. Castonguay, Pepijn G. Moerman, Caleb H. Meredith, Rebecca Balaj, Seong Ik Cheon, Lauren Zarzar
Summary: This study reports emulsions with a behavior opposite to the typical one where solubilization decreases the interfacial tension and leads to droplet attraction. By adjusting the oil chemical structure, nonionic surfactant structure, and surfactant concentration, three regimes corresponding to droplet attraction, repulsion, or inactivity are identified.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Yanfeng He, Kaili Liao, Jinmei Bai, Lipei Fu, Qianli Ma, Xiang Zhang, Zhangkun Ren, Weiyang Wang
Summary: The study explores the surfactant/nanoparticle flooding system based on CDEA and nano-SiO2, which effectively reduces oil-water interfacial tension, maintains system stability, and increases oil recovery rate.
Review
Chemistry, Multidisciplinary
Ali Mahmoud, Rahul Gajbhiye, Salaheldin Elkatatny
Summary: This study reviews the application of different types of organoclays in oil-based drilling fluids (OBDFs), investigating their structures, rheological properties, and thermal stability. The study also illustrates the role of fibrous and layered organoclays in enhancing the rheological properties of OBDFs, as well as the synergistic use of different organoclays to improve thermal stability. The research highlights gaps in knowledge and provides recommendations for further investigation in this field. The application of organoclays in OBDFs has significant potential for development and contributes to progress in the oil and gas industry.
Article
Chemistry, Multidisciplinary
Sahana Sheshachala, Birgit Huber, Jan Schuetzke, Ralf Mikut, Tim Scharnweber, Carmen M. Dominguez, Hatice Mutlu, Christof M. Niemeyer
Summary: Microfluidic droplets are used to study and mimic biological systems. In this study, a new charged fluorosurfactant was synthesized to assemble DNA-modified silica nanoparticles at the interface of microfluidic droplets.
NANOSCALE ADVANCES
(2023)
Article
Multidisciplinary Sciences
Bijoy Bera, Rama Khazal, Karin Schroen
Summary: The study reveals that the coalescence frequency of droplets in flowing oil-in-water emulsions increases with temperature due to the change in viscosity of the thin aqueous film between droplets at higher temperatures, triggering stronger perturbations.
SCIENTIFIC REPORTS
(2021)
Article
Energy & Fuels
Huang-Yan Ke, Hui Guo, Wei Ke, Gangfeng Ouyang
Summary: This paper experimentally studied the influence of sodium dodecyl benzenesulfonate (SDBS) on the nucleation and growth of methane hydrate. The results show that SDBS has a promoting effect on the nucleation rate and average growth rate of methane hydrate.
