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  • Open Access

    ARTICLE

    Modeling Oil Production and Heat Distribution during Hot Water-Flooding in an Oil Reservoir

    Chinedu Nwaigwe1,2,*, Abdon Atangana2

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.5, pp. 1239-1259, 2025, DOI:10.32604/fdmp.2025.059925 - 30 May 2025

    Abstract In the early stages of oil exploration, oil is produced through processes such as well drilling. Later, hot water may be injected into the well to improve production. A key challenge is understanding how the temperature and velocity of the injected hot water affect the production rate. This is the focus of the current study. It proposes variable-viscosity mathematical models for heat and water saturation in a reservoir containing Bonny-light crude oil, with the aim of investigating the effects of water temperature and velocity on the recovery rate. First, two sets of experimental data are… More >

  • Open Access

    ARTICLE

    A Connectivity Model for the Numerical Simulation of Microgel Flooding in Low-Permeability Reservoirs

    Tao Wang1,2, Haiyang Yu1,*, Jie Gao2, Fei Wang2, Xinlong Zhang3,*, Hao Yang2, Guirong Di2, Pengrun Wang2

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.5, pp. 1191-1200, 2025, DOI:10.32604/fdmp.2025.058865 - 30 May 2025

    Abstract Oilfields worldwide are increasingly grappling with challenges such as early water breakthrough and high water production, yet direct, targeted solutions remain elusive. In recent years, chemical flooding techniques designed for tertiary oil recovery have garnered significant attention, with microgel flooding emerging as a particularly prominent area of research. Despite its promise, the complex mechanisms underlying microgel flooding have been rarely investigated numerically. This study aims to address these gaps by characterizing the distribution of microgel concentration and viscosity within different pore structures. To enhance the accuracy of these characterizations, the viscosity of microgels is adjusted More >

  • Open Access

    ARTICLE

    The Influence of Water-Polymer Co-Flooding on the Development Effect of Oil Reservoirs

    Wensheng Zhou1,2, Chen Liu1,2, Deqiang Wang1,2, Bin Wang3, Yaguang Qu4,*

    Energy Engineering, Vol.122, No.6, pp. 2337-2354, 2025, DOI:10.32604/ee.2025.062530 - 29 May 2025

    Abstract The J oilfield in the Bohai has a long development history and has undergone comprehensive adjustment measures, including water injection and polymer injection. Following these adjustments, the injection and production well network now features coexistence of both polymer injection wells and water injection wells, which has negatively impacted production dynamics. Firstly, based on the adjusted reservoir well network in the J oilfield, a representative water-polymer co-injection well network was established. Subsequently, a numerical simulation model of this typical reservoir unit was developed using reservoir numerical simulation methods to confirm the interference issues associated with water-polymer More >

  • Open Access

    ARTICLE

    Assessing Stress Tolerance of SUBI and DRO1 Introgression Lines under Flooding and Drought Conditions at Different Growth Stages

    Ibrahim Soe1,2, Emmanuel Odama3, Alex Tamu1,2, Aquilino Lado Legge Wani1,4, Taiichiro Ookawa5, Abdelbagi M. Ismail6, Jun-Ichi Sakagami1,7,*

    Phyton-International Journal of Experimental Botany, Vol.94, No.2, pp. 303-316, 2025, DOI:10.32604/phyton.2025.060016 - 06 March 2025

    Abstract Rice varieties tolerant to submergence regulate shoot elongation during short-term submergence by expressing the SUB1A gene. In contrast, the deep-rooted DRO1 is effectively expressed under drought conditions to enhance water and nutrient uptake. This study investigates the growth and yield of rice with both SUB1A and DRO1 in the background of IR64, under early-season flooding, and mid-season drought. The study used a randomized complete design with two factors: soil moisture treatments (submergence, drought, and their combination) and genotypes. The genotypes included IR64, and three near-isogenic lines (NILs): NIL-SUB1DRO1, NIL-SUB1, and NIL-DRO1. Complete submergence was imposed for 7… More >

  • Open Access

    ARTICLE

    A Study on the Performances and Parameter-Dependence of Water-Alternating-Gas Flooding for Conglomerate Reservoirs

    Haishui Han1, Jian Tan1, Junshi Li1, Changhong Zhao2, Ruoyu Liu1, Qun Zhang3,4, Zemin Ji3,4, Hao Kang5,6,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.2, pp. 293-308, 2025, DOI:10.32604/fdmp.2025.058989 - 06 March 2025

    Abstract To address the water sensitivity of conglomerate reservoirs, a series of core sensitivity tests were conducted to evaluate the effects of varying ionic content. These findings serve as a foundation for improving reservoir fluid dynamics and optimizing the concentration of anti-swelling agents in water flooding operations. The experiments revealed a marked disparity in response between cores with differing permeabilities. In Core No. 5, characterized by low permeability, a 0.5% anti-swelling agent achieved only a modest 7.47% reduction in water sensitivity. Conversely, in the higher-permeability Core No. 8, a 5% anti-swelling agent significantly reduced the… More >

  • Open Access

    ARTICLE

    The Water Flooding Seepage Mechanism in the Inter-Fractures of Horizontal Wells in Tight Oil Reservoirs

    Xinli Zhao1,*, Qianhua Xiao2, Xuewei Liu3, Yu Shi4, Xiangji Dou1, Guoqiang Xing1

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.2, pp. 427-444, 2025, DOI:10.32604/fdmp.2024.052646 - 06 March 2025

    Abstract Tight oil reservoirs face significant challenges, including rapid production decline, low recovery rates, and a lack of effective energy replenishment methods. In this study, a novel development model is proposed, based on inter-fracture injection following volumetric fracturing and relying on a high-temperature and high-pressure large-scale physical simulation system. Additionally, the CMG (Computer Modelling Group Ltd., Calgary City, Canada) software is also used to elucidate the impact of various single factors on the production of horizontal wells while filtering out the interference of others. The effects of fracture spacing, fracture half-length, and the injection-production ratio are… More >

  • Open Access

    ARTICLE

    Prioritizing Network-On-Chip Routers for Countermeasure Techniques against Flooding Denial-of-Service Attacks: A Fuzzy Multi-Criteria Decision-Making Approach

    Ahmed Abbas Jasim Al-Hchaimi1, Yousif Raad Muhsen2,3,*, Wisam Hazim Gwad4, Entisar Soliman Alkayal5, Riyadh Rahef Nuiaa Al Ogaili6, Zaid Abdi Alkareem Alyasseri7,8, Alhamzah Alnoor9

    CMES-Computer Modeling in Engineering & Sciences, Vol.142, No.3, pp. 2661-2689, 2025, DOI:10.32604/cmes.2025.061318 - 03 March 2025

    Abstract The implementation of Countermeasure Techniques (CTs) in the context of Network-On-Chip (NoC) based Multiprocessor System-On-Chip (MPSoC) routers against the Flooding Denial-of-Service Attack (F-DoSA) falls under Multi-Criteria Decision-Making (MCDM) due to the three main concerns, called: traffic variations, multiple evaluation criteria-based traffic features, and prioritization NoC routers as an alternative. In this study, we propose a comprehensive evaluation of various NoC traffic features to identify the most efficient routers under the F-DoSA scenarios. Consequently, an MCDM approach is essential to address these emerging challenges. While the recent MCDM approach has some issues, such as uncertainty, this… More >

  • Open Access

    REVIEW

    Ecosystem Services of Grazed Grasslands in the Flooding Pampa

    Elizabeth J. Jacobo1,#,*, Adriana M. Rodríguez2,#

    Phyton-International Journal of Experimental Botany, Vol.93, No.6, pp. 1179-1202, 2024, DOI:10.32604/phyton.2024.050928 - 27 June 2024

    Abstract The Flooding Pampa grasslands are the last remnant of the Rio de la Plata grasslands in Argentina. Anthropogenic interventions have led to severe degradation and, as a result, the ecosystem services provided by the grasslands are declining, in terms of provisioning, regulating, and supporting services. We synthesized the existing literature on the ecosystem goods and services provided by these grasslands under grazing in different conditions and conservation status. We found that plant and animal diversity and primary production are the most studied ecosystem services, while climate regulation, water supply, nutrient cycling, meat production and erosion… More >

  • Open Access

    ARTICLE

    Response Mechanisms to Flooding Stress in Mulberry Revealed by Multi-Omics Analysis

    Jingtao Hu1, Wenjing Chen1, Yanyan Duan1, Yingjing Ru1, Wenqing Cao1, Pingwei Xiang2, Chengzhi Huang2, Li Zhang2, Jingsheng Chen1, Liping Gan1,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.2, pp. 227-245, 2024, DOI:10.32604/phyton.2024.046521 - 27 February 2024

    Abstract Abiotic stress, including flooding, seriously affects the normal growth and development of plants. Mulberry (Morus alba), a species known for its flood resistance, is cultivated worldwide for economic purposes. The transcriptomic analysis has identified numerous differentially expressed genes (DEGs) involved in submergence tolerance in mulberry plants. However, a comprehensive analyses of metabolite types and changes under flooding stress in mulberry remain unreported. A non-targeted metabolomic analysis utilizing liquid chromatography-tandem mass spectrometry (LC-MS/MS) was conducted to further investigate the effects of flooding stress on mulberry. A total of 1,169 metabolites were identified, with 331 differentially accumulated metabolites… More >

  • Open Access

    ARTICLE

    Optimization of Gas-Flooding Fracturing Development in Ultra-Low Permeability Reservoirs

    Lifeng Liu1, Menghe Shi2, Jianhui Wang3, Wendong Wang2,*, Yuliang Su2, Xinyu Zhuang2

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.3, pp. 595-607, 2024, DOI:10.32604/fdmp.2023.041962 - 12 January 2024

    Abstract Ultra-low permeability reservoirs are characterized by small pore throats and poor physical properties, which are at the root of well-known problems related to injection and production. In this study, a gas injection flooding approach is analyzed in the framework of numerical simulations. In particular, the sequence and timing of fracture channeling and the related impact on production are considered for horizontal wells with different fracture morphologies. Useful data and information are provided about the regulation of gas channeling and possible strategies to delay gas channeling and optimize the gas injection volume and fracture parameters. It More >

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