Article
Environmental Sciences
Ramin Moghadasi, Sajjad Foroughi, Farzad Basirat, Steven R. McDougall, Alexandru Tatomir, Branko Bijeljic, Martin J. Blunt, Auli Niemi
Summary: Pore-network modeling is used to understand the physics of remobilization of trapped CO2. The study reveals that gas remobilization occurs at a higher saturation than residual trapping, and is influenced by network properties and mechanisms. The findings also show a reduction in gas relative permeability, indicating a slow release of trapped gas due to remobilization. These results have important implications for underground gas and CO2 storage.
WATER RESOURCES RESEARCH
(2023)
Article
Thermodynamics
Yujia Fang, Erlong Yang, Songlin Guo, Changyu Cui, Congcong Zhou
Summary: In this study, photoetched glass models and micro CT-scanner technology were used to investigate the effect of polymer solutions with different molecular weights on oil recovery. The results showed that the molecular weight of the polymer solution played a crucial role in enhancing oil recovery, with the best performance observed for a molecular weight of 1900 x 10(4) Da in low-permeability models under parallel displacement conditions. Additionally, the study validated the low utilization ratio of membrane and blind end residual oils in the photoetched glass models.
Article
Chemistry, Physical
Qipeng Ma, Weiyao Zhu, Wengang Bu, Zhiyong Song, Hua Li, Yajing Liu
Summary: This study compares the differences in residual oil distribution and oil displacement mechanisms between capillary force-driven and gravity-driven systems through core and pore-scale experiments. The results show significant differences in residual oil treatment and oil displacement between capillary force-driven and gravity-driven systems, and the micro mechanisms behind these differences are revealed through the study of contact angles and solid-liquid interfacial forces.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Andrey Viktorovich Minakov, Dmitriy Viktorovich Guzei, Maxim Ivanovich Pryazhnikov, Sergey Anatol'yevich Filimonov, Yulia Olegovna Voronenkova
Summary: The oil recovery factor (ORF) increases with the increase of mass fraction of nanoparticles; increasing the nanoparticle concentration to 0.5% allows an increase in ORF by about 19% compared to water flooding; ORF increases with the decrease of nanoparticle size and declines with the increase of displacing rate.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2021)
Article
Engineering, Chemical
A. Azarafza, A. J. C. King, R. Mead-Hunter, J. Schuler, S. Abishek, B. J. Mullins
Summary: Microstructure optimization of mist and dust filter media relies increasingly on computational simulations. A dynamic pore network modeling framework was developed and evaluated, showing successful prediction of critical filtration properties with significantly lower computational cost compared to fully resolved CFD.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Energy & Fuels
Andres Pinilla, Miguel Asuaje, Camila Hurtado, Angela Hoyos, Luis Ramirez, Aaron Padron, Nicolas Ratkovich
Summary: Water production has become common in the oil industry, resulting in increased costs and environmental impact. The Viscous Fingering phenomenon, caused by viscosity ratios, is a major issue in heavy oil fields. By studying this phenomenon using 3D CFD modeling with scaled horizontal wells, researchers were able to simulate and analyze the effects of water production at the pore scale. This information is valuable for improving completion and recovery techniques in the oil industry.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Environmental Sciences
Satyajit Chowdhury, Mayank Rakesh, Srawanti Medhi, Japan Trivedi, Jitendra S. Sangwai
Summary: This study examines the behavior of supercritical CO2 (sc-CO2) under different temperature and pressure conditions, and finds that sc-CO2 sequestration is more effective in light oil reservoirs, while higher pressures enhance sequestration or oil recovery in heavy oil reservoirs.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Energy & Fuels
Jinxun Wang, Abdulkareem M. AlSofi, Abdullah M. Boqmi
Summary: Polymer flooding is an effective technique for enhancing oil recovery, though it can increase project costs. Polymer retention is essential to the success of a polymer flooding project, and accurate quantification of this parameter is crucial. Research on polymer retention in carbonates has shown potential for applications in carbonate reservoirs, with reduced retention in the presence of residual oil. Wettabilty has a minor impact on polymer retention compared to the presence of oil, and residual oil and wettability have minimal impact on polymer inaccessible pore volume (IPV).
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Marine
Yuan Gao, Jie Lin, Jisheng Zhang, Yakun Guo
Summary: This study investigates the dynamic response of the seabed around twin pipelines using a two-dimensional numerical model, and explores the impact of fluid flow and pipeline arrangement on residual pore pressure and liquefaction zone.
Article
Thermodynamics
Bo Ren, Ian J. Duncan
Summary: This study focuses on residual oil zones (ROZs) in petroleum exploration, exploring the effectiveness factors of water alternating gas (WAG) injection strategies in brownfield ROZs through simulation experiments. The research findings suggest that ROZs and traditional main pay zones (MPZs) differ in injection strategies, requiring specific approaches to maximize oil production.
Article
Chemistry, Multidisciplinary
Darezhat A. Bolysbek, Alibek B. Kuljabekov, Kenbai Sh Uzbekaliyev, Bakytzhan K. Assilbekov
Summary: This study examines the effect of carbonate rock dissolution on two-phase flow and reveals that an increase in absolute permeability leads to a significant reduction in residual oil and water saturations. The study also demonstrates that rock dissolution results in a change in the spatial heterogeneity of relative phase permeabilities.
APPLIED SCIENCES-BASEL
(2023)
Article
Energy & Fuels
Shadi A. Saeed, Usman Taura, Yahya Al-Wahaibi, Ameen A. Al-Muntaser, Chengdong Yuan, Mikhail A. Varfolomeev, Saif Al-Bahry, Sanket Joshi, Richard Djimasbe, Muneer A. Suwaid, Rail Kadyrov, Ranel Galeev, Ahmed Naabi, Majid Hasani, Rashid Said Al Busaidi
Summary: This study evaluated the hydrothermal conversion of oil shale from Natih B Formation in Oman and found that 350 degrees C was the optimal temperature for achieving the best performance. The hydrothermal treatment significantly increased the pore size and porosity of the rock, transforming the oil shale from a low permeable into a higher permeable porous medium. These promising results provide technical support for the development of shale oil from the Natih B Formation through hydrothermal conversion.
Article
Engineering, Petroleum
Madhar Sahib Azad
Summary: Research finds that enhanced oil recovery (EOR) polymer systems, such as hydrolyzed polyacrylamide (HPAM) solutions, exhibit shear-thickening in porous media under high flux conditions. To characterize the viscous and viscoelastic behaviors of polymer solutions in porous media, both oscillatory shear rheology based on linear viscoelastic data and extensional rheology based on nonlinear viscoelastic data have been used. However, this study shows that researchers should also consider using nonlinear steady-shear rheology, as the shear-thickening behavior in high-saline HPAM solutions correlates with their mechanical degradation.
Article
Multidisciplinary Sciences
Mohammad Amin Bagrezaie, Bahram Dabir, Fariborz Rashidi, Ali Reza Moazzeni
Summary: In this study, scale development caused by seawater injection in an Iranian oil field was predicted using modeling approaches, and it was suggested to use special water to reduce scale accumulation. The extent of permeability damage in different seawater injection scenarios was assessed via dynamic core flood experiments. The results show that modeling approaches can replace traditional experiments to evaluate formation damage in the water flooding process.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Chemical
Tong Liu, Moran Wang
Summary: Digital rock analysis provides a powerful tool for predicting geophysical properties and studying fluid and interfacial transport mechanisms in rocks, but there is a struggle to balance scanning resolution and sample size due to imaging technology limitations. The critical size of REV for multiphase flow in porous media is found beyond twice that for single-phase flow in this study, indicating the influence of phase interaction and wettability on relative permeability-saturation curve in multiphase flow.
TRANSPORT IN POROUS MEDIA
(2022)