Article
Engineering, Chemical
Shouxu Qiao, Wenyi Zhong, Shuang Wang, Lanxin Sun, Sichao Tan
Summary: This study reveals that elbows create secondary flow with two counter-rotating vortices in both single-phase and two-phase flows. These vortices dissipate downstream, with the additional buoyant force in two-phase flow leading to a longer dissipating length for the elbow effect.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Energy & Fuels
Ming Wang, Yuanyuan Ma, Hao Li, Boyun Guo
Summary: This study investigates the impact of proppant surface wettability on oil and water displacement in hydraulic fractures. Experimental and numerical simulation results demonstrate that hydrophobic proppants can hinder water flow, and strong oil-wet proppants exhibit water blocking phenomenon on both high permeability and low permeability sandstone samples. These findings provide valuable insights for controlling oil and water displacement in hydraulic fractures.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Thermodynamics
Yuqi Huang, Ke Chen, Xiaoyu Tang, Yidong Fang
Summary: The uniformity of two-phase flow distribution is crucial for heat transfer performance in a multi-channel heat sink. This study conducted a 3D numerical simulation to investigate the transient flow oscillations and distributions during subcooled flow boiling. The numerical model was validated with flow pattern visualization experiments, and the causes and phenomena of flow instability, such as reversed flow and asymmetric flow, were studied. The relationship between the two-phase flow pattern, heat transfer performance, and pressure drop oscillation was also established. Based on the results, an optimized structure was proposed and demonstrated to mitigate reversed flow and improve the uniformity of mass and temperature distribution by 11.2% and 8.89%, respectively. The heat transfer performance of the side channels was also enhanced, resulting in an overall improvement in heat transfer performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Chemistry, Physical
Kenjiro Torii, Manabu Kodama, Shuichiro Hirai
Summary: Alkaline water electrolysis is suitable for industrial-scale mass production of hydrogen, but it operates at lower current density to avoid high overpotential. Bubble dynamics can both impede and accelerate ion transport, and simulations reveal their effects on ion transport and overpotential.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Xiaojun Shi, Bangtao Yin, Gangqing Chen, Xiaodong Zhang, Xuesong Mei
Summary: In this study, numerical simulation of a loop rotating heat pipe was conducted using the VOF method and Lee phase change model. It was found that increasing rotation speed enhances heat transfer performance, while increasing heating power reduces overall thermal resistance. The results show detailed evaporation and condensation phenomena, along with the effects of centrifugal force, rotation speed, and heating power on the heat transfer characteristics of the heat pipe.
APPLIED THERMAL ENGINEERING
(2021)
Article
Engineering, Marine
Shengtao Chen, Yibo Zhang, Xiaolu Wang, Kai Teng, Yongjun Gong, Yichen Qu
Summary: This paper investigates the flow characteristics of liquid in long-distance gas-liquid pipelines through numerical simulations. The results show that the presence of clearance significantly affects the gas-liquid flow pattern, with a larger clearance leading to a lower volume fraction of liquid slug. Additionally, the length and speed of the liquid slug are influenced by the speed of the pig and the inlet gas velocity.
Article
Thermodynamics
Nsidibe Sunday, Abdelhakim Settar, Khaled Chetehouna, Nicolas Gascoin
Summary: A 3-D mathematical model of oil-water Newtonian flow under non-isothermal conditions is established to evaluate the oil-water temperatures in flowlines. The model accurately predicts the flow patterns, heat transfer coefficients, and pressure gradients for different flowline orientations and inclinations. The results are validated with high accuracy level and can be used for deep offshore applications.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Environmental Sciences
M. De la Cruz-Avila, I Carvajal-Mariscal, Leonardo Di G. Sigalotti, Jaime Klapp
Summary: This study numerically evaluates the effects of different injection configurations on the behavior and evolution of a two-phase flow through a staggered Y-junction pipeline. The results show that the supply configuration and the velocities of the phases have significant impacts on the development of the main flow and the flow patterns. The study highlights the need for caution in selecting the injection supply system to achieve better flow blending.
Article
Energy & Fuels
Qiquan Ran, Xin Zhou, Dianxing Ren, Jiaxin Dong, Mengya Xu, Ruibo Li
Summary: This paper proposes a new simulation method for two-phase shale oil reservoirs that takes into account the microscale effects and validates it using field data. The study reveals that capillary action restricts the flow of shale oil within micro- and nanoscale pores, resulting in reduced oil saturation and flow efficiency.
Article
Materials Science, Multidisciplinary
Wei Liu, Jie Liu, Tao Liu, Chengyong Huang, Shufeng Yang, Jingshe Li
Summary: This study investigates the motion behaviors of liquid inclusions in a steel-slag two-phase system through water model experiments and numerical models. The deformation details of the liquid inclusions and their interaction with the steel-slag interface are discussed.
Article
Thermodynamics
Yafei Li, Jianqiang Deng
Summary: This study simulated flashing flow in the transcritical CO2 ejector using a novel non-equilibrium evaporation-cavitation CFD model, which was verified through experiments. The results revealed that mass transfer rates of cavitation and evaporation increased with nozzle diverging angles, while the dimensions of the mixing chamber and diffuser also affected the ejector performance.
Article
Engineering, Multidisciplinary
Jianchun Xu, Huating Qin, Hangyu Li, Zhengdong Lei
Summary: In this study, the embedded discrete fracture method (EDFM) was introduced to couple the flow in matrix and fracture, establishing a two-phase flow model and coupling governing equations through multiple spatial scales. The newly developed numerical simulation method improves the limitations of EDFM in Pre-Darcy flow, providing an effective tool for hydrocarbon production analysis.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Engineering, Chemical
Gustavo Bochio, Marlon M. H. Cely, Arthur F. A. Teixeira, Oscar M. H. Rodriguez
Summary: This study focuses on the stratified two-phase flows of oil and water with high viscosity oil. Comparisons between experimental data and computational fluid dynamics (CFD) models show good overall results for pressure drop, volumetric fractions, and phase distributions, indicating a good consistency between CFD predictions and experimental observations.
Article
Engineering, Chemical
Wei Zhang, Qihong Feng, Zhehui Jin, Xiangdong Xing, Sen Wang
Summary: The presence of water bridges in calcite nanopores can enhance oil flow and provide theoretical support for shale oil exploration. Decreasing water content leads to a transition from slug flow to laminar flow, resulting in a significant decrease in total volume flux. Liquid-liquid slip effects between water and oil layers positively impact oil flow in calcite nanopores.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Energy & Fuels
Wanghong Long, Yu Yang, Jingyi Yang, Tao Liu
Summary: The application of ultra-dry CO2 foam in enhanced oil recovery (EOR) accelerates recovery and enables CO2 utilization and sequestration. The flow characteristics of foam in porous media play a crucial role in the foam EOR process. A shear-thinning, non-Newtonian fluid model was determined for the ultra-dry CO2 foam and its effectiveness in increasing oil recovery was demonstrated through core displacement experiments.
Article
Geochemistry & Geophysics
Catharina J. Heerema, Peter J. Talling, Matthieu J. Cartigny, Charles K. Paull, Lewis Bailey, Stephen M. Simmons, Daniel R. Parsons, Michael A. Clare, Roberto Gwiazda, Eve Lundsten, Krystle Anderson, Katherine L. Maier, Jingping P. Xu, Esther J. Sumner, Kurt Rosenberger, Jenny Gales, Mary McGann, Lionel Carter, Edward Pope
EARTH AND PLANETARY SCIENCE LETTERS
(2020)
Article
Oceanography
Zhiwen Wang, Jingping Xu, Peter J. Talling, Matthieu J. B. Cartigny, Stephen M. Simmons, Roberto Gwiazda, Charles K. Paull, Katherine L. Maier, Daniel R. Parsons
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2020)
Article
Geology
S. Hage, V. V. Galy, M. J. B. Cartigny, S. Acikalin, M. A. Clare, D. R. Grocke, R. G. Hilton, J. E. Hunt, D. G. Lintern, C. A. McGhee, D. R. Parsons, C. D. Stacey, E. J. Sumner, P. J. Talling
Article
Geology
Jeff Peakall, Jim Best, Jaco H. Baas, David M. Hodgson, Michael A. Clare, Peter J. Talling, Robert M. Dorrell, David R. Lee
Article
Oceanography
S. M. Simmons, M. Azpiroz-Zabala, M. J. B. Cartigny, M. A. Clare, C. Cooper, D. R. Parsons, E. L. Pope, E. J. Sumner, P. J. Tailing
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2020)
Article
Multidisciplinary Sciences
Maarten S. Heijnen, Michael A. Clare, Matthieu J. B. Cartigny, Peter J. Talling, Sophie Hage, D. Gwyn Lintern, Cooper Stacey, Daniel R. Parsons, Stephen M. Simmons, Ye Chen, Esther J. Sumner, Justin K. Dix, John E. Hughes Clarke
NATURE COMMUNICATIONS
(2020)
Correction
Multidisciplinary Sciences
Maarten S. Heijnen, Michael A. Clare, Matthieu J. B. Cartigny, Peter J. Talling, Sophie Hage, D. Gwyn Lintern, Cooper Stacey, Daniel R. Parsons, Stephen M. Simmons, Ye Chen, Esther J. Sumner, Justin K. Dix, John E. Hughes Clarke
NATURE COMMUNICATIONS
(2020)
Article
Geochemistry & Geophysics
R. S. Barrett, B. Bellwald, P. J. Talling, A. Micallef, F. Gross, C. Berndt, S. Planke, R. Myklebust, S. Krastel
Summary: Submarine landslides can be significantly larger than their terrestrial counterparts and can pose significant hazards across entire ocean basins. The failure mechanism strongly controls the associated tsunami hazard. The Tampen Slide, one of the largest landslides on Earth, was found to have failed mainly as a single volume along a single failure surface, differing significantly from other giant submarine landslides that seem to have failed in multiple phases and involving multiple failure surfaces.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
News Item
Geosciences, Multidisciplinary
Peter J. Talling
Article
Geochemistry & Geophysics
Lewis P. Bailey, Michael A. Clare, Kurt J. Rosenberger, Matthieu J. B. Cartigny, Peter J. Talling, Charles K. Paull, Roberto Gwiazda, Daniel R. Parsons, Stephen M. Simmons, Jingping Xu, Ivan D. Haigh, Katherine L. Maier, Mary McGann, Eve Lundsten
Summary: This study analyzed detailed measurements of powerful turbidity currents in Monterey Canyon, California, and found that the triggering mechanism of turbidity currents is not always major external events, but can occur more easily during enhanced seasonal sediment supply.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geology
Ye Chen, Daniel R. Parsons, Stephen M. Simmons, Rebecca Williams, Matthieu J. B. Cartigny, John E. Hughes Clarke, Cooper D. Stacey, Sophie Hage, Peter J. Talling, Maria Azpiroz-Zabala, Michael A. Clare, Jamie L. Hizzett, Maarten S. Heijnen, James E. Hunt, D. Gwyn Lintern, Esther J. Sumner, Age J. Vellinga, Daniela Vendettuoli
Summary: This study investigates the distribution, variation, and interaction of knickpoints and crescentic bedforms in Bute Inlet, British Columbia, revealing that knickpoint migration is driven by frequent turbidity currents, affecting seafloor reorganization and the morphology of bedforms. The interactions between flows, knickpoints, and bedforms are important as they likely dominate the character of preserved submarine channel-bed deposits.
Article
Geology
Catharina J. Heerema, Matthieu J. B. Cartigny, Ricardo Silva Jacinto, Stephen M. Simmons, Ronan Apprioual, Peter J. Talling
Summary: Turbidity currents triggered at river mouths play a crucial role in transporting sediment, organic carbon, and nutrients to the deep sea. However, identifying flood-triggered turbidity currents and their deposits may be challenging, as similar velocity structures can be formed by different triggers. The study also shows how the proximal multi-pulsed velocity structure reorganizes down-canyon to produce a single velocity pulse, which has previously been linked to landslide-triggered events.
JOURNAL OF SEDIMENTARY RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
R. Gwiazda, C. K. Paull, B. Kieft, D. Klimov, R. Herlien, E. Lundsten, M. McCann, Matthieu J. Cartigny, A. Hamilton, J. Xu, Katherine L. Maier, D. R. Parsons, Peter J. Talling
Summary: This study used Benthic Event Detectors (BEDs) to measure the speed and structure of submarine gravity flows near the seabed. The results showed that the near-bed flow had a stratified structure, and the BEDs rotated and moved within the flow. The near-bed layer exhibited fluid-like characteristics.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Geochemistry & Geophysics
Maarten S. Heijnen, Michael A. Clare, Matthieu J. B. Cartigny, Peter J. Talling, Sophie Hage, Ed L. Pope, Lewis Bailey, Esther Sumner, D. Gwyn Lintern, Cooper Stacey, Daniel R. Parsons, Stephen M. Simmons, Ye Chen, Stephen M. Hubbard, Joris T. Eggenhuisen, Ian Kane, John E. Huges Clarke
Summary: Submarine channels serve as the primary conduits for land-derived material to enter the deep-sea. This study investigates the magnitude-frequency-distance relationships of turbidity currents and sediment transport patterns within a submarine channel-lobe system using repeat seafloor surveys and turbidity current monitoring. The results provide new insights into mass redistribution and particle residence times, as well as the processes of sediment shuffling and burial. The findings also emphasize the potential hazards to seafloor infrastructure and highlight the importance of understanding sediment dynamics in submarine environments.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Multidisciplinary Sciences
Ed L. Pope, Matthieu J. B. Cartigny, Michael A. Clare, Peter J. Talling, D. Gwyn Lintern, Age Vellinga, Sophie Hage, Sanem Acikalin, Lewis Bailey, Natasha Chapplow, Ye Chen, Joris T. Eggenhuisen, Alison Hendry, Catharina J. Heerema, Maarten S. Heijnen, Stephen M. Hubbard, James E. Hunt, Claire McGhee, Daniel R. Parsons, Stephen M. Simmons, Cooper D. Stacey, Daniela Vendettuoli
Summary: Turbidity currents, one of the most important sediment transport phenomena on Earth, have been poorly understood due to limited direct measurements. This study analyzes the largest number of turbidity currents monitored to date, revealing their structure and evolution. The study finds that turbidity currents can be classified into two types: fast and dense or slow and dilute, with a transitional flow head in between. Dense heads of turbidity currents have a significant impact on sediment transport and can extend into the deep sea.
Article
Geosciences, Multidisciplinary
Weijiao Ma, Jinbu Li, Min Wang
Summary: The petroleum resource assessment obtained from laboratory tests on old core samples tends to underestimate the in situ resources. This study investigates the hydrocarbon loss and restoration by comparing preserved and exposed core samples. It is found that previous studies have severely underestimated the in situ hydrocarbon potential due to factors such as sample crushing and crucible waiting. A new restoration model is proposed to compensate for these losses.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Shaoyun Chen, Yongqiang Yang, Longwei Qiu, Xiaojuan Wang, Erejep Habilaxim
Summary: Quartz cement is an important authigenic mineral in the tight sandstones of the Shaximiao Formation in the Sichuan Basin. This study analyzed the silicon sources of the quartz cement using mineralogical, fluid inclusion, and geochemical data. The results showed that smectite alteration and dissolution of aluminosilicate minerals were the primary sources of silicon for quartz cementation. Contributions from volcanic material hydrolysis and pressure solution were relatively minor. The presence of chlorite films inhibited the development of quartz overgrowths and had minimal impact on reservoir quality.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xing Jian, Ping Guan, Ling Fu, Wei Zhang, Xiaotian Shen, Hanjing Fu, Ling Wang
Summary: This study presents a synthesis of new detrital zircon dating results and published data from the Cenozoic Qaidam basin, revealing the spatiotemporal variation of detrital zircon age populations and supporting models of synchronous deformation in northern Tibet. The study emphasizes the importance of considering textural and sedimentological parameters in zircon provenance interpretations, as well as the need for integrated provenance analysis involving other detritus components.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
A. Peketi, G. Sriram, A. Mazumdar, P. Dewangan, A. Zatale, V. Rajurkar, Gayatri Shirodkar, V. Mahale, V. Yatheesh
Summary: This study investigates 13 submarine seamounts in the southern Andaman volcanic arc and observes evidence of hydrothermal activity in one of the seamounts. The evidence includes plumes rich in dissolved gases, live chemosymbiotic organisms, and the deposition of neoforming minerals. These observations suggest the development of a new hydrothermal field in the least explored Andaman Sea.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Yanxian Zhu, Zhiliang He, Xiaowen Guo, Long Li, Sheng He, Jian Gao, Shuangjian Li, Huili Li
Summary: This study investigates the fluid evolution history of the hydrothermal dolomite reservoir in the Middle Permian Maokou Formation in the Sichuan Basin. The results reveal the diagenetic sequences, mineral origins, salinity history, and pressure evolution using various analytical techniques. The findings provide important insights into the gas charge, escape, and preservation conditions of the reservoir.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Rafaella de Carvalho Antunes, Julia Campos Guerrero, Ricardo Jorge Jahnert
Summary: This study presents a detailed sedimentary model and identifies various sedimentary facies associations in the coquina deposits of the Itapema Formation in the offshore pre-salt Buzios Field of the Santos Basin. These facies associations were primarily influenced by waves and currents and reflect a complex depositional system.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Kang Meng, Tongwei Zhang, Deyong Shao, Xiuyan Liu, Hui Song, Heng Peng
Summary: In this study, an integrated method of measuring optical reflectance and Raman spectroscopy is proposed to accurately determine the thermal maturity of Lower Cambrian shales in South China. The results show that this method is reliable and effective, and it has important implications for analyzing overmature shale.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Mohamed A. K. El-Ghali, Olga Shelukhina, Iftikhar Ahmed Abbasi, Mohamed S. H. Moustafa, Osman Salad Hersi, Numair A. Siddiqui, Khalid Al-Ramadan, Abdullah Alqubalee, Abdulwahab Muhammad Bello, Abduljamiu O. Amao
Summary: This study employs an integrated depositional and sequence stratigraphic approach to assess the control of diagenesis on reservoir porosity of a hybrid-energy delta system. The study focuses on the Barik Formation in the Haushi-Huqf region of Central Oman, which represents a highstand system tract of a hybrid-energy delta. The assessments reveal that the reservoir porosity is controlled by various degrees of diagenetic processes, including mechanically infiltrated clays and kaolinitization of silicate grains.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xiaocan Yu, Chunlian Wang, Hua Huang, Kai Yan
Summary: Oilfield brines are a significant alternative lithium resource. This study investigates the metallogenic characteristics and enrichment process of oilfield brines from the Jianghan Basin, central China using chemical and multi-isotope data. The results suggest that lithium enrichment in these brines is the result of interaction with clastic host rocks and dilution by meteoric water.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Jianghao Qiao, Xiwu Luan, Thanuja D. Raveendrasinghe, Yintao Lu, Guozhang Fan, Xinyuan Wei, Long Jin, Jian Yin, Haozhe Ma, Lushan Jiang
Summary: This study investigates the Tanintharyi passive continental margin in the Andaman Sea and reveals the potential of the Oligocene/Early Miocene carbonate platform in the region as a significant hydrocarbon reservoir. It also examines the influence of changes in sedimentary facies and the tectonic setting of the Andaman Sea on the evolution of pockmarks.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Anastasios Nikitas, Georgios Makrodimitras, Maria V. Triantaphyllou, Nikolaos Pasadakis, Kimon Christanis, Stavros Kalaitzidis, Grigoris Rousakis, Ioannis Panagiotopoulos, Alexandra Gogou, Alexandros Papadopoulos, Efthimios Tartaras, Aristofanis Stefatos
Summary: Due to the lack of deep wells in the broader region, studying mud volcanic deposits can improve the geological understanding of the Mediterranean Ridge. In this study, biostratigraphic and geochemical analyses were performed on mud breccia deposits from five Mud Volcanoes in the central MR. The results indicate the origin of these deposits and provide insights into the source rock potential. Seismic data is also used to determine the distribution of major lithostratigraphic formations.
MARINE AND PETROLEUM GEOLOGY
(2024)