Results 51 to 60 of about 19,864 (265)

Behavior of Sedimentary Rock Tunnel against Rigid Projectile Impact

Applied Sciences, 2022
The tunnels in present-day cities are experiencing varying degrees of loading conditions ranging from static to extreme loading. Therefore, the stability of underground tunnels needs to be analyzed and understood for safer and strengthened design.
Abdullah H. Alsabhan, Md. Rehan Sadique, Ali S. Alqarni, Shamshad Alam, Wonho Suh   +4 more
doaj   +1 more source

7000 Years of Aboriginal Mining at Sugarloaf Hill in the Riverland Region of South Australia

Archaeology in Oceania, EarlyView.
ABSTRACT Silcrete and chert are commonly represented in Aboriginal archaeological lithic assemblages across large parts of the southwestern Murray‐Darling Basin (MDB). In South Australia (SA), these materials were sourced from a series of quarries located along the incised course of the Murray River through the upper Riverland region.
Craig Westell, Ian Moffat, Richard Fullagar, Amy Roberts, Justine Kemp, Mike Morley, Marc Fairhead, Simon Hoad, River Murray and Mallee Aboriginal Corporation   +8 more
wiley   +1 more source

Experimental study on the damage characteristics of cyclic disturbance and acoustic emission characteristics of different types of sandstones under high stress in deep mines

Deep Underground Science and Engineering
Three sandstone specimens common in rock engineering were selected to study the differences in the mechanical properties of rocks with different lithologies. The development and expansion of the internal cracks in the specimens were observed by combining
Yujing Jiang, Bin Liang, Dong Wang, Ling Dong, Hengjie Luan, Changsheng Wang, Jiankang Liu   +6 more
doaj   +1 more source

The impact of high temperature on mechanical properties and behaviors of sandstone

Frontiers in Earth Science
The impact of high temperature environments on the physical and mechanical properties of rocks is a significant factor to consider. The investigation into the impact of elevated temperatures on the physical and mechanical characteristics of rocks holds ...
Juan Jin, Juan Jin, Jiandong Liu, Jiandong Liu, Weixi Chen, Guoping Li, Wei Cheng, Wei Cheng, Xiaowen Zhang, Xiaowen Zhang, Yifan Luo   +10 more
doaj   +1 more source

Synthesis and characterization of a highly hydrophilic nanocomposite for wettability alteration, water/oil interfacial tension reduction, and enhanced oil recovery

The Canadian Journal of Chemical Engineering, EarlyView.
Mechanism of wettability alteration, interfacial tension reduction, and oil recovery by novel nanocomposite. Abstract The development of stable nanofluids (NFs) for enhanced oil recovery (EOR) relies on optimizing interactions between reservoir rocks and fluids.
Ehsan Jafarbeigi, Ehsan Kamari, Amir H. Mohammadi   +2 more
wiley   +1 more source

Spatially resolved 23Na magnetic resonance dispersion measurement in porous media

The Canadian Journal of Chemical Engineering, EarlyView.
Quantitative 23Na MRI was employed to analyze dispersion in realistic core plug samples and was compared with the conventional breakthrough curve. 23Na MRI provided a more effective aassessment of core plug heterogeneity than the conventional method. Abstract Tracer tests are widely used in the petroleum industry to assess reservoir core plugs, relying
Rheya Rajeev, Mohammad Sadegh Zamiri, Andrés Ramírez Aguilera, Florea Marica, Laura Romero de Zerón, Bruce J. Balcom   +5 more
wiley   +1 more source

Effect of Fluid Rheology And Sandstone Permeability on Enhanced Oil Recovery in a Microfluidic Sandstone Device

Applied Rheology, 2015
Maximizing oil recovery from current reserves is becoming more important as global usage continues to rise. In this paper, we present the development of two microfluidic sandstone devices of high complexity and differing permeability capable of quickly ...
Nilsson Michael A., Rothstein Jonathan P.   +1 more
doaj   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Sedimentology and reservoir characterisation of Lower Jurassic clastic sedimentary rocks, Salt and Trans Indus Ranges, Pakistan: Evidence from petrography, scanning electron microscopy and petrophysics

The Depositional Record
In this study, sandstones of the Lower Jurassic Datta Formation in the Salt and Trans‐Indus ranges are investigated regarding composition, diagenesis, provenance and reservoir properties using petrography, scanning electron microscopy and petrophysical ...
Salman Ahmed Khattak, Nasar Khan, Waseem Khan, S. Sahaya Jude Dhas, George Kontakiotis, Ihtisham Islam, Hammad Tariq Janjuhah, Assimina Antonarakou   +7 more
doaj   +1 more source

The Impact of Rock Morphology on Gas Dispersion in Underground Hydrogen Storage

Energies
Fluid dispersion directly influences the transport, mixing, and efficiency of hydrogen storage in depleted gas reservoirs. Pore structure parameters, such as pore size, throat geometry, and connectivity, influence the complexity of flow pathways and the ...
Tri Pham, Rouhi Farajzadeh, Quoc P. Nguyen   +2 more
doaj   +1 more source