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Design of conditioning circuit for weak signal in through-casing resistivity logging
Design of conditioning circuit for weak signal in through-casing resistivity logging
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Design of conditioning circuit for weak signal in through-casing resistivity logging
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Design of conditioning circuit for weak signal in through-casing resistivity logging
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Design of conditioning circuit for weak signal in through-casing resistivity logging
Design of conditioning circuit for weak signal in through-casing resistivity logging
Journal Article

Design of conditioning circuit for weak signal in through-casing resistivity logging

2017
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Overview
Cet article tente de détecter des signaux extrêmement faibles et de supprimer les interférences dans la diagraphie de résistivité à travers le casing. Plus précisément, un circuit de conditionnement a été conçu selon des caractéristiques des signaux à mesurer et les principes / méthodes de réalisation ont été spécifiés pour le circuit d'alimentation, le circuit préamplificateur, le circuit amplificateur d'étage intermédiaire et le circuit de filtrage. Le circuit conçu a été vérifié par une expérience. Les résultats montrent que le circuit de conditionnement proposé peut extraire les signaux utiles précisément et supprimer les signaux d'interférence. Les résultats de la recherche donne les nouvelles pistes pour la détection de signaux extrêmement faibles dans la diagraphie de la strate. TITRE Conception d'un circuit de conditionnement de signaux extrêmement faibles pour la diagraphie de la résistivité dans le casing TITLE Design of conditioning circuit for weak signal in through-casing resistivity logging RÉSUMÉ Cet article tente de détecter des signaux extrêmement faibles et de supprimer les interférences dans la diagraphie de résistivité à travers le casing. Plus précisément, un circuit de conditionnement a été conçu selon des caractéristiques des signaux à mesurer et les principes / méthodes de réalisation ont été spécifiés pour le circuit d'alimentation, le circuit préamplificateur, le circuit amplificateur d'étage intermédiaire et le circuit de filtrage. Le circuit conçu a été vérifié par une expérience. Les résultats montrent que le circuit de conditionnement proposé peut extraire les signaux utiles précisément et supprimer les signaux d'interférence. Les résultats de la recherche donne les nouvelles pistes pour la détection de signaux extrêmement faibles dans la diagraphie de la strate. ABSTRACT The detection of extremely weak signals and suppression of interference are the key problems to be solved in through-casing formation resistivity logging. According to the characteristics of the signal to be measured, the signal conditioning circuit is designed. The principle and method for realization of power supply circuit, preamplifier circuit, middlestage amplifier circuit and filter circuit are put forward. The result of measurement shows that conditioning circuit can accurately extract useful signals and suppress interference signals, and achieve the expected design goal. AUTHOR(S) Yongchun HOU MOTS-CLÉS signaux extrêmement faibles, diagraphie de résistivité dans le casing, circuit de conditionnement, circuit d’amplificateur, circuit de filtration. KEYWORDS extremely weak signals, through-casing resistivity logging, signal conditioning circuit, amplifier circuit, filter circuit. ARTICLE LANGUAGE English
Publisher
International Information and Engineering Technology Association (IIETA)