Results 21 to 30 of about 13,286,818 (399)

Evaluating Pore Structure of Shale Reservoirs through Pore Space Multifractal Characterization

open access: yesGeofluids, 2023
Characteristics of pore structure are crucial to oil exploration and development in shale reservoirs, but practical evaluation of shale pore structure remains a longstanding challenge.
Quanqi Dai   +9 more
doaj   +1 more source

Modeling and petrophysical properties of digital rock models with various pore structure types: An improved workflow

open access: yesInternational Journal of Coal Science & Technology, 2023
Pore structure is a crucial factor affecting the physical properties of porous materials, and understanding the mechanisms and laws of these effects is of great significance in the fields of geosciences and petroleum engineering.
Xiaobin Li   +4 more
doaj   +1 more source

Comprehensive characterization of nano-pore system for Chang 7 shale oil reservoir in Ordos Basin

open access: yesEnergy Exploration & Exploitation, 2021
Detailed study on the pore structure of shale oil reservoir is significantly for the exploration and development, and the conventional single pore structure measurement method cannot accurately describe the pore structure characteristics of the shale oil
Hui Gao   +6 more
doaj   +1 more source

Quantitative characterization of pore structure in coal measure shales based on deep learning

open access: yesMeitan kexue jishu, 2023
Reservoir pore structure is an important factor affecting shale gas exploration and development. In order to accurately characterize the nanopore structure in coal-measure shale reservoirs, this paper takes coal-measure shale in the Muli area of Qinghai ...
Anmin WANG   +4 more
doaj   +1 more source

The crystal structure of Pneumolysin at 2.0 Å resolution reveals the molecular packing of the pre-pore complex [PDF]

open access: yes, 2015
Pneumolysin is a cholesterol-dependent cytolysin (CDC) and virulence factor of Streptococcus pneumoniae. It kills cells by forming pores assembled from oligomeric rings in cholesterol-containing membranes.
Andrew, Peter W   +8 more
core   +1 more source

Pore Structure and Fractal Characteristics of Different Shale Lithofacies in the Dalong Formation in the Western Area of the Lower Yangtze Platform

open access: yesMinerals, 2020
The purpose of this article was to quantitatively investigate the pore structure and fractal characteristics of different lithofacies in the upper Permian Dalong Formation marine shale.
Longfei Xu   +8 more
semanticscholar   +1 more source

Synchrotron radiation facility-based quantitative evaluation of pore structure heterogeneity and anisotropy in coal

open access: yesPetroleum Exploration and Development, 2019
In order to quantify coal pore structure heterogeneity and anisotropy, synchrotron radiation SAXS (Small Angle X-ray Scattering) was applied to obtain the SAXS images of two different rank coal samples. The surface fractal dimension (D1) and pore fractal
Yingfeng SUN   +4 more
doaj   +1 more source

Fractal characteristics of pore-throat structure in tight sandstones using high-pressure mercury intrusion porosimetry

open access: yes地质科技通报, 2021
Microcosmic pore-throat structure is an important factor affecting the characteristics of sandstone reservoirs.However, the pore-throat of tight sandstone is complex and heterogeneous, which is difficult to be effectively characterized by conventional ...
Wei Wang   +5 more
doaj   +1 more source

Pore structure characteristics and fractal structure evaluation of medium- and high-rank coal

open access: yesEnergy exploration & exploitation, 2021
The presence of gas content in medium- and high-rank coal poses a threat to safety production. Safe gas extraction is based on a correct understanding of the pore structure of coal. This work investigates the pore structure characteristics of medium- and
Yuan Yuan, Feng Cai, Lingling Yang
semanticscholar   +1 more source

Reversible Self-Actuated Thermo-Responsive Pore Membrane. [PDF]

open access: yes, 2016
Smart membranes, which can selectively control the transfer of light, air, humidity and temperature, are important to achieve indoor climate regulation. Even though reversible self-actuation of smart membranes is desirable in large-scale, reversible self-
Gutierrez, Maria Paz   +2 more
core   +2 more sources

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