prikaz prve stranice dokumenta Elektronička sonda za nerazorno ispitivanje cijevi naftne bušotine primjenom impulsnih vrtložnih struja
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scientific master's theses
Elektronička sonda za nerazorno ispitivanje cijevi naftne bušotine primjenom impulsnih vrtložnih struja
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2005. urn:nbn:hr:168:298105
Ambruš, Davorin
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Electronic Systems and Information Processing

Cite this document

Ambruš, D. (2005). Elektronička sonda za nerazorno ispitivanje cijevi naftne bušotine primjenom impulsnih vrtložnih struja (Scientific master's theses). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:298105

Ambruš, Davorin. "Elektronička sonda za nerazorno ispitivanje cijevi naftne bušotine primjenom impulsnih vrtložnih struja." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2005. https://urn.nsk.hr/urn:nbn:hr:168:298105

Ambruš, Davorin. "Elektronička sonda za nerazorno ispitivanje cijevi naftne bušotine primjenom impulsnih vrtložnih struja." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2005. https://urn.nsk.hr/urn:nbn:hr:168:298105

Ambruš, D. (2005). 'Elektronička sonda za nerazorno ispitivanje cijevi naftne bušotine primjenom impulsnih vrtložnih struja', Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 22 March 2025, https://urn.nsk.hr/urn:nbn:hr:168:298105

Ambruš D. Elektronička sonda za nerazorno ispitivanje cijevi naftne bušotine primjenom impulsnih vrtložnih struja [Scientific master's theses]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2005 [cited 2025 March 22] Available at: https://urn.nsk.hr/urn:nbn:hr:168:298105

D. Ambruš, "Elektronička sonda za nerazorno ispitivanje cijevi naftne bušotine primjenom impulsnih vrtložnih struja", Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2005. Available at: https://urn.nsk.hr/urn:nbn:hr:168:298105

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Metadata
TitleElektronička sonda za nerazorno ispitivanje cijevi naftne bušotine primjenom impulsnih vrtložnih struja
Title (english)Pulsed eddy current based electronic tool for nondestructive inspection of oil-well casing
AuthorDavorin Ambruš
MentorVedran Bilas (mentor)
Committee memberRatko Magjarević (predsjednik povjerenstva)
Committee memberVedran Bilas (član povjerenstva)
Committee memberIgor Zorić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Electronic Systems and Information Processing)
Zagreb
Defense date and country2005-12-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Electronics
Universal decimal classification
(UDC)		621.3 - Electrical engineering
Abstract
U radu je prezentirana metodologija projektiranja i izvedbe elektroničke sonde za nerazorno ispitivanje zaštitne cijevi naftne bušotine. Ispitivanje je temeljeno na metodi impulsnih vrtložnih struja, a uključuje određivanje osnovnih mehaničkih značajki cijevi (debljine stijenke i unutarnjeg promjera). Na početku su definirani osnovni tehnički zahtjevi vezani za potrebne mjerne karakteristike sonde, te uvjete rada u visokotemperaturnom okruženju. U skladu s traženim zahtjevima, sustavno je obrađena problematika izbora optimalnih elektroničkih komponenata i sklopova za rad na visokim temperaturama, te načina njihovog povezivanja i ugradnje. Opisani su osnovni fizikalni mehanizmi kvarova, te praktične metode za ostvarenje potrebne funkcionalnosti i pouzdanosti sonde na temperaturama do 175 °C. Analizirana je mjerna metoda temeljena na impulsnim vrtložnim strujama, te su pokazane njezine osnovne prednosti u odnosu na ostale primjenjive metode. Pri tome je posebna pažnja posvećena prednostima metode s instrumentacijskog aspekta (manja potrošnja, manja duljina sonde, kraće vrijeme ispitivanja, jednostavnija sklopovska izvedba). Na temelju provedenih razmatranja mjerne metode i problema ekstremnih radnih uvjeta, predložena je i opisana sklopovska i programska konfiguracija elektroničke sonde. Na kraju su prezentirani rezultati laboratorijskih ispitivanja, te je dana konačna ocjena izvedbe sonde na temelju početnih tehničkih zahtjeva.
Abstract (english)
In this master's thesis, a methodology for design and implementation of the electronic tool for nondestructive inspection of oil-well casing is presented. The inspection is based on pulsed eddy current method and features determination of basic mechanical properties of the tube (wall thickness and inner diameter measurement). First of all, initial technical requirements are defined, related to the desired measurement performance of the tool and the demand for operation in high-temperature environment. According to these requirements, the selection of optimal electronic components and circuit design procedures for high-temperature operation is thoroughly discussed. Also, basic failure mechanisms are described, as well as practical design methods for achieving the required functionality and reliability of the tool at temperatures up to 175 °C. Pulsed eddy current based measurement method is analyzed and its main advantages over other applicable methods are shown. The most important features of the method from the instrumentation point of view are specifically highlighted (low power consumption, low length of the tool, shorter inspection period, simpler electronic circuitry). Based on discussions of the measurement method and harsh operating environment, a hardware and software configuration of the electronic tool is proposed. Finally, results of laboratory tests are provided. Verification of the electronic tool design is also performed, based on initial technical requirements.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:298105
Study programmeTitle: Postgraduate master programme in electrical engineering
Study programme type: university
Study level: postgraduate
Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsClosed access
Terms of useLicence In copyright icon
RepositoryFER Repository
Created on2019-07-16 08:07:32

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