Article
Chemistry, Physical
Stephanie Cavalcante de Morais, Nivia do Nascimento Marques, Paulo Cesar Franca da Camara, Elessandre Alves de Souza, Rosangela de Carvalho Balaban
Summary: Temporary abandonment of oil wells requires isolation protocols to ensure safety of the environment and operators, for subsequent reactivation. Polymeric gels with a threedimensional structure and adequate elastic properties are a promising alternative. Solid-free gels of hydrolyzed polyacrylamide and polyethyleneimine with glycerol as reinforcement material were developed. The addition of diethylenetriamine and diethanolamine as anti-syneresis agents resulted in a reduction of gelation time and an increase in thermal stability of the gels. The new HPAM-PEI-Glycerol-DETA/DEA gel formulation showed superior elastic properties compared to the HPAM-PEI gel.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Manufacturing
S. M. Basha, N. Venkaiah, M. R. Sankar
Summary: Abrasive flow finishing (AFF) is an advanced surface finishing process that utilizes reciprocating abrasive media to gradually reduce the surface roughness of a component. Recently, hydrogel-based abrasive media have gained attention due to their cost-effectiveness, eco-friendliness, and biodegradability. However, the presence of water in these media may cause corrosion of component surfaces. In this study, a noncorroding and long-lasting abrasive medium was developed, which consists of galactomannan polymer, glycerol solution, cross-linker, and abrasive particles.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Environmental
Hongyao Yin, Xin Yin, Ruibo Cao, Peiyun Zeng, Jing Wang, Dianguo Wu, Xinjie Luo, Youyi Zhu, Zhuo Zheng, Yujun Feng
Summary: This study reports on polymer-based in situ cross-linked gels with adjustable gelation times, which can be used for water shutoff and conformance control, improving sweep efficiency and oil recovery in oil reservoirs.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Chunhuan Liu, Zhaojun Zheng, Yifei Shi, Yan Zhang, Yuanfa Liu
Summary: This study reports a simple method to prepare low-oil emulsion gels by solidifying the oil phase, demonstrating excellent stability and exploring the mechanisms of formation and stabilization. The research found that beeswax enhanced the interaction of solidified droplets and strengthened the gel structure, enriching emulsion gel formulations and applications in foods.
Review
Food Science & Technology
Mingjun Shu, Liuping Fan, Jiaxiang Zhang, Jinwei Li
Summary: This paper reviews the research progress of internal aqueous gel, discusses some gel factors suitable for internal aqueous gel and the gel mechanism of main gel factors. The advantages of this internal aqueous gel emulsion system allow its use in the field of fat substitutes and encapsulating substances.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2022)
Article
Engineering, Civil
Maryam Mousavifard, Fatemeh Poursmaeili, Hamid Shamloo
Summary: This paper aims to develop a backward analysis version of the inverse transient leak detection method for plastic pipes. The modified Kelvin-Voigt model and discretization of Brunone unsteady friction were used in the analysis. The improved backward transient model was compared to the inverse transient model with and without considering unsteady friction effects to investigate its performance. The results showed that both models performed well in larger leak sizes, while the advantage of eliminating uncertainties in the backward transient analysis model led to successful leak detection in smaller leak sizes.
JOURNAL OF HYDRAULIC RESEARCH
(2022)
Article
Agriculture, Multidisciplinary
Xiao-Wei Chen, Xiao-Xiao Li, Chuan-Guo Ma, Zhi-Li Wan, Shang-De Sun
Summary: This study developed smart thermo-triggered soft vehicles by structuring edible liquid oil, which can control the release of diverse nutrients. These soft matters have interesting thermoresponsive nature for programmed release of coencapsulated bioactive components.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Mandeep Marwah, Raj K. S. Badhan, Deborah Lowry
Summary: The study aimed to develop a novel phytochemical-based deformable liposomal formulation for controlled-release of naringenin, a compound with potential anti-cancer properties. Testing showed that increasing Tween 20 loading in the liposomes decreased deformability and affected naringenin release, with further retardation observed when incorporated into HEC and HPMC gels. The deformable liposomes demonstrated improved drug penetration across dermal cells, indicating their potential value in controlled-release formulations.
JOURNAL OF LIPOSOME RESEARCH
(2022)
Article
Energy & Fuels
Leonardo Goliatt, Reem Sabah Mohammad, Sani I. Abba, Zaher Mundher Yaseen
Summary: This study proposes a hybrid modeling framework that combines machine learning models and nature-inspired differential evolution optimization for accurate prediction of flowing bottom-hole pressure (FBHP). The framework automatically selects relevant variables and achieves reliable FBHP modeling results.
Article
Materials Science, Multidisciplinary
Hasmukh A. A. Patel, Kenneth D. D. Johnson, Roland F. F. Martinez
Summary: We have developed triazine-based polymers (PolyTz) with pendant reactive functional groups that can form covalent linkages with cement, improving the mechanical properties of oil and gas wells cement.
MRS COMMUNICATIONS
(2023)
Article
Geochemistry & Geophysics
Weirong Li, Zhenzhen Dong, John W. Lee, Xianlin Ma, Shihao Qian
Summary: In this study, a machine learning technique was used to establish a model for estimating production performance for unconventional reservoirs. The model was validated using a large amount of data and simulation, and showed satisfactory results.
Article
Biochemistry & Molecular Biology
Jose F. Rubio-Valle, Jose E. Martin-Alfonso, Maria E. Eugenio, David Ibarra, Jose M. Oliva, Paloma Manzanares, Concepcion Valencia
Summary: This work presents the chemical and structural characterization of a lignin-rich residue from bioethanol production of olive stones, and explores its potential for developing nanostructures through electrospinning and castor oil structuring. The results reveal that the olive stone lignin-rich residue (OSL) has a high lignin content and specific structural properties. The electrospun nanostructures obtained from OSL and cellulose triacetate exhibit different morphologies, which are highly influenced by the rheological properties of the polymer solutions. Furthermore, the uniform nanofiber mats can be dispersed in castor oil, forming gel-like dispersions. The rheological properties are affected by the membrane concentration, OSL:CT weight ratio, and morphology of the electrospun nanostructures.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2024)
Article
Engineering, Chemical
Fares Abu-Abed, Kirill Pivovarov, Vitaly Zhironkin, Sergey Zhironkin
Summary: The purpose of the software development is to obtain detailed information about the surface of well walls to improve efficiency and safety in drilling and casing. The developed LogPWin software allows clear understanding of the mine and reduces processing time. It provides detailed surface information through 3D modeling and offers interactive features such as rotating and scaling the object and changing color schemes. The program is applicable in the oil and gas industry, mining, and other drilling purposes.
Article
Energy & Fuels
Yuhai Zhou, Zhuo Luo, Min Xu, Tianyu Zhao, Xiao Ma, Shuai Zhou, Bianying Wen, Dongzhi Yang
Summary: Temperature-sensitive poly(N-isopropylacrylamide-acrylamide) nano-microspheres have the potential to control and enhance oil recovery in low-permeability reservoirs. By reducing the particle size and hydrophilicity of the microspheres, they can improve their effect at the oil-water interface.
Review
Polymer Science
Yingrui Bai, Yuan Liu, Keqing Yang, Youming Lang
Summary: Polymer gel materials are formed through physical and chemical crosslinking, creating a gel network system with high mechanical properties and reversibility. Due to their excellent properties and intelligence, polymer gel materials are widely used in biomedical, tissue engineering, artificial intelligence, firefighting, and other fields. This paper reviews the mechanisms and characteristics of polymer gels formed through non-covalent bonding (such as hydrophobic bonding, hydrogen bonding, electrostatic interactions, and Van der Waals interactions) and covalent bonding (such as imine bonding, acylhydrazone bonding, and Diels-Alder reaction). The current applications and future prospects of polymer gels in drilling fluids, fracturing fluids, and enhanced oil recovery are also discussed, with the aim of expanding the application fields of polymer gel materials and promoting their development towards greater intelligence.