Results 1 to 10 of about 168,361 (260)

The Inverse Problem of Identification of Hydrogen Permeability Model [PDF]

Advances in Mathematical Physics, 2018
One of the technological challenges for hydrogen materials science is the currently active search for structural materials with important applications (including the ITER project and gas-separation plants). One had to estimate the parameters of diffusion
Yury V. Zaika, Natalia I. Rodchenkova, Ekaterina K. Kostikova   +2 more
doaj   +2 more sources

Semi-Supervised Learning–Based Petrophysical Facies Division and “Sweet Spot” Identification of Low-Permeability Sandstone Reservoir

Frontiers in Earth Science, 2022
The identification of the “sweet spot” of low-permeability sandstone reservoirs is a basic research topic in the exploration and development of oil and gas fields.
Hongjun Fan, Hongjun Fan, Xiaoqing Zhao, Xiaoqing Zhao, Xu Liang, Xu Liang, Quansheng Miao, Yongnian Jin, Xiangyu Wang   +8 more
doaj   +3 more sources

Geological genesis and identification of high-porosity and low-permeability sandstones in the Cretaceous Bashkirchik Formation, northern Tarim Basin

Open Geosciences
The genesis and prediction of high-porosity and low-permeability sandstone reservoirs are hot spots in oil and gas geology research worldwide. High-porosity and low-permeability sandstone reservoirs are developed in the Cretaceous Bashkirchik Formation ...
Xie Runcheng, Fu Shuangjun, Liang Honggang, Deng Kun, Yin Shuai, Ma Tingting, Li Siyuan, Cai Wenli   +7 more
doaj   +2 more sources

Parametric identification algorithm of hydrogen fast permeability model

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2017
High-purity hydrogen is required for clean energy and a variety of chemical technology processes. Different alloys, which may be well-suited for use in gas-separation plants, were investigated by measuring specific hydrogen permeability.
Yury Zaika, Natalia Rodchenkova
doaj   +3 more sources

Study on the standard of the four relationships of reservoir and the lower limit of effective reservoir in Nantun Formation of Oilfield A [PDF]

E3S Web of Conferences, 2023
By using the data of logging, cuttings logging, thin section identification and analysis in the study area to study the four characteristics of the Nantun Formation reservoir and their relationship, the lower limit standard of effective reservoir ...
Zhou Yalou, Fan Guangjuan, Gao Ang, Zhao Wentong, Dong Ting   +4 more
doaj   +1 more source

An improved wave equation of fractured-porous media for predicting reservoir permeability

Frontiers in Earth Science, 2023
The wave characteristics of fractured-porous media can be utilized for permeability identification; however, further research is necessary to enhance the accuracy of this identification. A novel wave equation for fractured-porous media is formulated, and
Wanjin Zhao, Weitao Sun, Jianhu Gao, Run He   +3 more
doaj   +1 more source

Reservoir Permeability Identification under Three-Phase Filtration Using a Priori Information on Wells

Mathematics, 2022
A method is proposed to solve the identification problem of the permeability field of a three-dimensional reservoir under conditions of three-phase fluid filtration. The peculiarity of the method lies in the fact that the wells retain the proportionality
Andrey V. Elesin, Alfiya Sh. Kadyrova, Anatoliy I. Nikiforov, Aleksey V. Tsepaev   +3 more
doaj   +1 more source

Experimental and numerical identification of cortical bone permeability [PDF]

Journal of Biomechanics, 2008
Bone is a complex system, and could be modeled as a poroelastic media. The aim of this paper is to identify the macroscopic value of the cortical bone permeability coefficient. A simple experimental method was designed in order to determine the permeability coefficient.
Etienne, Malachanne, David, Dureisseix, Patrick, Cañadas, Franck, Jourdan   +3 more
openaire   +2 more sources

Cell-permeable probe for identification and imaging of sialidases [PDF]

Proceedings of the National Academy of Sciences, 2013
Alkyne-hinged 3-fluorosialyl fluoride (DFSA) containing an alkyne group was shown to be a mechanism-based target-specific irreversible inhibitor of sialidases. The ester-protected analog DFSA (PDFSA) is a membrane-permeable precursor of DFSA designed to be used in living cells, and it was shown to form covalent adducts with virus, bacteria, and human ...
Charng-Sheng, Tsai, Hsin-Yung, Yen, Meng-I, Lin, Tsung-I, Tsai, Shi-Yun, Wang, Wen-I, Huang, Tsui-Ling, Hsu, Yih-Shyun E, Cheng, Jim-Min, Fang, Chi-Huey, Wong   +9 more
openaire   +2 more sources

Evaluation of petrophysical classification of strongly heterogeneous reservoirs based on the MRGC algorithm

Frontiers in Earth Science, 2023
The target formation in the study area of the Pearl River Mouth Basin is characterized by complex lithology and thin interbedded layers, with a large pore-permeability distribution range and strongly heterogeneous characteristics, which makes the ...
Xiaoqing Zhao, Xiaoqing Zhao, Quansheng Miao, Ruipu Zhao, Xu Liang, Xu Liang, Xiabin Wang, Xiabin Wang, Tengfei Tian   +8 more
doaj   +1 more source