نتایج جستجو برای: formation resistivity factor
تعداد نتایج: 1330056 فیلتر نتایج به سال:
The electrical resistivity of thin palladium films deposited on amorphous substrates is measured in dependence on film thickness. The data are interpreted with the help of a statistical model taking into account structural information obtained from AES, TEM and x-ray diffraction texture analysis. The steep decrease of resistivity in the ultra-thin thickness region can be im mediately correlate...
S U M M A R Y We propose a new, simple and efficient method to image electrical resistivity between a set of wells. Our procedure consists of two steps: first, we map the interfaces between various subsurface formations using seismoelectric conversions; second, we derive the formation resistivity using image-guided cross-well electric tomography. In the first step, we focus seismic energy at a ...
an improved model of mud dispersion has been introduced in this work. the advantages of this model consist of a new analytical correlation for dispersivity by using resistivity log data and using a new aspect of capacitance dispersion model. mathematical formulations were expressed, solved by numerical model taking advantage of actual log and formation data. achieved results yielded reasonable ...
Paper concerned the research of elastic and electric properties consolidated terrigenous rocks Cambrian period southern slope Lviv Palaeozoic trough. The purpose was to study petrophysical parameters reservoir (siltstones sandstones), as basis integrated analysis their physical properties. looked at rock samples, resistivity formation factor, enlargement velocities P-waves interval (transit) ti...
A model potential depending on an effective core radius but otherwise parameter free is used for the comparative study of electrical resistivity of simple and non-simple liquid metals. In the present paper electrical resistivity of simple and non-simple liquid metals have been calculated using Ziman’s formula, Ziman’s formula modified and used by Khajil and Tomak (Self consistent approximation)...
In recent years, interface engineering of solid electrolytes has been explored to increase their ionic conductivity and improve the performance of solid oxide fuel cells and other electrochemical power sources. It has been observed that the ionic conductivity of epitaxially grown thin films of some electrolytes is dramatically enhanced, which is often attributed to effects (e.g. strain-induced ...
A review of the formation processes for nickel silicide is given to assess the limitations of using the silicide for sub-65 nanometer technologies. Various aspects attributed to the NiSi formation process are described and addressed by using a two-step process sequence for annealing. The focus of this study was to develop a process sequence with three principal steps to achieve low resistivity ...
In this work, FeSiCr powders were coated with a SiO2 insulation layer for soft magnetic composites (SMCs) through elemental silicon powder hydrolysis, without using any expensive precursors. The effects of the reaction temperature and ammonia concentration on structure performance SMCs investigated. Through hydrolysis process, formation an FeSiCr–SiO2 core-shell effectively reduced core loss, i...
a Laboratoire d’Étude et Modélisation des Environnements Littoraux (Lemel), Université de Bretagne Sud, Centre Yves Coppens, Campus de Tohannic, F-56000, Vannes. b Laboratoire de Statistiques Appliquées de BREtagne Sud (Sabres), Université de Bretagne Sud, Centre Yves Coppens, Campus de Tohannic, F-56000, Vannes. c Laboratoire de Mathématiques et Applications des Mathématiques (LMAM) , Universi...
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