Impact of mineral composition and distribution on the mechanical properties of porous media

Brunhoeber, Olivia; Arakkal, Dinu; Ji, Rourou; Miletić, Marta; Beckingham, Lauren E.

doi:10.1051/e3sconf/202020502006

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…The generator efficiency was estimated from the output parameters obtained in the experimental model. Research is currently underway to improve the output parameters [25][26][27] .…”

Section: Resultsmentioning

confidence: 99%

Increase the reliability of power supply by using mechanical energy storage devices for low-power consumers

2021

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The article analyzes the possibilities of using wind energy in Uzbekistan and studies the possibility of using energy storage devices to build a reliable electricity supply in the regions. In areas with weak winds, a device that first stores wind energy and then generates alternating electricity has been proposed. Energy storage systems have been analyzed, and it is recommended to use mechanical energy storage systems in the energy system consisting of renewable energy sources in the Republic of Uzbekistan. It has been noted that the use of such devices is particularly effective in areas far from centralized power supply, where power supply is not available or where reliability is low. An experimental model of a mechanical energy storage device using an elastic cord braid in a storage system and some equations for its design are given. The possibility and necessity of using this storage system is highly valued in our country. Despite the low power of the original model of the device, it is possible to achieve high results in the future by conducting research in this area and changing the type and composition of the elastic cord. This article presents the results of preliminary research on the development of a new design of mechanical energy storage devices using mechanical elastic cord.

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“…The generator efficiency was estimated from the output parameters obtained in the experimental model. Research is currently underway to improve the output parameters [25][26][27] .…”

Section: Resultsmentioning

confidence: 99%

Increase the reliability of power supply by using mechanical energy storage devices for low-power consumers

2021

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“…The strength of soil appears to be governed mostly by its bulk density and porosity [ 40 , 47 , 48 , 49 , 50 , 51 ]. However, Horn and Fleige [ 37 ] stated that this issue also requires in-depth research because the strength properties of soils may be quite different, even for similar bulk densities, due to various pore system arrangements (horizontal, vertical or randomized).…”

Section: Introductionmentioning

confidence: 99%

Structure and Strength of Artificial Soils Containing Monomineral Clay Fractions

et al. 2021

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Structure and strength are responsible for soil physical properties. This paper determines in a uniaxial compression test the strength of artificial soils containing different proportions of various clay-size minerals (cementing agents) and silt-size feldspar/quartz (skeletal particles). A novel empirical model relating the maximum stress and the Young’s modulus to the mineral content basing on the Langmuir-type curve was proposed. By using mercury intrusion porosimetry (MIP), bulk density (BD), and scanning electron microscopy (SEM), structural parameters influencing the strength of the soils were estimated and related to mechanical parameters. Size and shape of particles are considered as primary factors responsible for soil strength. In our experiments, the soil strength depended primarily on the location of fine particles in respect to silt grains and then, on a mineral particle size. The surface fractal dimension of mineral particles played a role of a shape parameter governing soil strength. Soils containing minerals of higher surface fractal dimensions (rougher surfaces) were more mechanically resistant. The two latter findings appear to be recognized herein for the first time.

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Rock mechanical properties of immature, organic-rich source rocks and their relationships to rock composition and lithofacies

Abu-Mahfouz

Iakusheva

Finkbeiner

et al. 2023

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Mechanical properties of layered rocks are critical in ensuring wellbore integrity and predicting natural fracture occurrence for successful reservoir development, particularly in unconventional reservoirs for which fractures provide the main pathway for hydrocarbon flow. We examine rock mechanical properties of exceptionally organic-rich, immature source rocks from Jordan and understand their relationships with rock mineral composition and lithofacies variations. Four depositional microfacies were identified: organic-rich mudstone, organic-rich wackestone, silica-rich packstone, and fine-grained organic-rich wackestone. The four types exhibit various mineralogical compositions, dominated by carbonates, biogenic quartz, and apatite. Leeb hardness ranges between 288 – 654, with the highest average values in silica-rich packstone and organic-rich mudstone. The highest uniaxial compressive strength (derived from the intrinsic specific energy measured by Epslog's Wombat scratch device), compressional, and shear waves velocities were measured in organic-rich mudstones (140 MPa, 3368 m/s, and 1702 m/s, respectively). Porosity shows higher average values in organic-rich wackestones and fine-grained organic-rich wackestones (33% – 35%). Silica-rich packstone and organic-rich mudstone have brittle properties, while organic-rich wackestone and fine-grained organic-rich wackestone are ductile. High silica contents are correlated positively with brittleness. A strong hardness-brittleness correlation suggests that Leeb hardness is a useful proxy for brittleness. Our study allows a better understanding of the relationships between lithofacies, organic content and rock mechanical properties, with implications for fracking design to well completion and hydrocarbon production. Further work involving systematic sampling and a more rigorous study is still required to better understand the spatial distribution of target lithologies and their mechanical properties.

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Impact of mineral composition and distribution on the mechanical properties of porous media

Cited by 4 publications

References 12 publications

Increase the reliability of power supply by using mechanical energy storage devices for low-power consumers

Increase the reliability of power supply by using mechanical energy storage devices for low-power consumers

Structure and Strength of Artificial Soils Containing Monomineral Clay Fractions

Rock mechanical properties of immature, organic-rich source rocks and their relationships to rock composition and lithofacies

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