Results 21 to 30 of about 1,052,081 (397)

Paired and Unpaired Deep Learning Methods for Physically Accurate Super-Resolution Carbonate Rock Images

open access: yesTransport in Porous Media, 2022
X-ray micro-computed tomography (micro-CT) has been widely leveraged to characterise the pore-scale geometry of subsurface porous rocks. Recent developments in super-resolution (SR) methods using deep learning allow for the digital enhancement of low ...
Yufu Niu   +4 more
semanticscholar   +1 more source

Stress sensitivity of porosity and permeability under varying hydrostatic stress conditions for different carbonate rock types of the geothermal Malm reservoir in Southern Germany

open access: yesGeothermal Energy, 2021
In geothermal reservoir systems, changes in pore pressure due to production (depletion), injection or temperature changes result in a displacement of the effective stresses acting on the rock matrix of the aquifer.
D. Bohnsack   +4 more
semanticscholar   +1 more source

The chromian marbles of Kittilä, Finnish Lapland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1978
The volcano-sedimentary rock association at Kittilä is characterized in many places by the presence of green-colored fuchsite-bearing ferroan dolomite-quartz rocks, locally called chromian marbles.
Y. Pekkala, K. Puustinen
doaj   +1 more source

Shear Response of Wet Weak Carbonate Rock/Grout Interfaces Under Cyclic Loading

open access: yesRock Mechanics and Rock Engineering, 2021
The development and construction of offshore wind farms requires the correct estimation of the friction that can be mobilised at the rock/grout interface.
Eleni Stavropoulou, C. Dano, M. Boulon
semanticscholar   +1 more source

The leakoff in acid fracturing kinetics control mechanism

open access: yesEnergy Reports, 2022
To study the compacted carbonate leakoff mechanism during acid fracturing process, we introduced a new characterization method. Realized acid reaction violently with carbonate reservoirs, concentration within the natural crack, larger pores or natural ...
Yuxia Wang, Qinghua Shang, Heng Wang
doaj   +1 more source

Geological and geochemical characteristics and genesis of carbonate rocks in a certain area [PDF]

open access: yesE3S Web of Conferences, 2022
Carbonate rock is a general term for the rock composed of carbonate minerals, which is mainly composed of carbonate sediments, with calcite (limestone) and dolomite (dolomite) as the main forms.
Zhang Tong
doaj   +1 more source

X-ray Micro CT Based Characterization of Pore-Throat Network for Marine Carbonates from South China Sea

open access: yesApplied Sciences, 2022
The pore-throat network of rock exerts a vital influence on the permeability and mechanical properties of the rock. Resorting to X-ray micro-CT scanning, the present work investigates the pore-throat structure of marine biogenic carbonate samples from ...
Haifeng Liu, Chenghao Ma, Changqi Zhu
doaj   +1 more source

Effects of atmospheric CO2 consumption on rock weathering in the Pearl River basin, China [PDF]

open access: yesE3S Web of Conferences, 2019
Atmospheric CO2 is absorbed and dissolved in water via karst processes not only in carbonate rock areas, but in all rock areas of the earth. The chemical and isotopic analysis results, particularly of strontium, for water samples collected from eleven ...
Qin Xiaoqun   +4 more
doaj   +1 more source

High‐Resolution Data Sets for Global Carbonate and Silicate Rock Weathering Carbon Sinks and Their Change Trends

open access: yesEarth's Future, 2022
The Carbonate rock weathering Carbon Sink (CCS) and Silicate rock weathering Carbon Sink (SCS) play a significant role in the carbon cycle and global climate change.
L. Xiong   +18 more
semanticscholar   +1 more source

Reservoir characteristics and forming conditions for the Middle Triassic Leikoupo Formation in the western Sichuan Basin, China

open access: yesJournal of Natural Gas Geoscience, 2019
In the past few years, petroleum exploration in the Leikoupo Formation in the western Sichuan Basin of China has obtained fruitful achievements, but composite research on the carbonate rock reservoir and its control factors are lagging behind, which ...
Han Tian   +4 more
doaj   +1 more source

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