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Pregled bibliografske jedinice broj: 819834

New neutron log for small scale variations in carbon/oxygen ratio


Valković, Vladivoj; Sudac, Davorin; Nađ, Karlo; Obhođaš, Jasmina
New neutron log for small scale variations in carbon/oxygen ratio // IEEE transactions on nuclear science, 62 (2015), 2; 407-414 doi:10.1109/TNS.2015.2390671 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 819834 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
New neutron log for small scale variations in carbon/oxygen ratio

Autori
Valković, Vladivoj ; Sudac, Davorin ; Nađ, Karlo ; Obhođaš, Jasmina

Izvornik
IEEE transactions on nuclear science (0018-9499) 62 (2015), 2; 407-414

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
carbon; carbon/oxygen ratio; gamma ray spectra; neutrons; oil fields; oxygen; small scale variations

Sažetak
The aim of the research reported here is the development of a methodology for the measurement of small scale variations in chemical elements concentrations, in particular of carbon to oxygen ratio. Knowledge of the C/O ratio is of importance to many problems in various fields. Here we single out the application in obtaining important information about the oilfields. The most fundamental reservoir parameters-oil, gas and water content-are critical factors in determining how each oilfield should be developed. It is well established that carbon to oxygen ratio log yields accurate and repeatable data that can be used to identify and monitor reserves depletion. Recent improvements in neutron generator and gamma detector technologies resulted in small devices which allowed through-tubing measurements. Although the ratio of carbon and oxygen yields is a measure of the amount of oil around the tool it should be realized that a carbon signal can originate from several sources including the borehole, the cement behind the casing, the formation rock and the formation fluid. In order to evaluate these contributions individually we are proposing the modification of the neutron generator by insertion of segmented associated alpha particle detector. From the measurement of neutron time of flight spectra (alpha particle detector-start signal ; gamma ray detector-stop signal) it would be possible to determine the location of gamma-ray production voxel and in such a way to determine radial variations in chemical elements concentrations, in particular of C/O ratio.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
098-0362975-2881 - Razvoj i primjene nuklearnih analitičkih metoda (Obhođaš, Jasmina, MZOS ) ( POIROT)
098-0362975-2891 - Razvoj metoda kontrole prometa opasnog materijala (Matika, Dario, MZOS ) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Davorin Sudac (autor)

Avatar Url Vladivoj Valković (autor)

Avatar Url Karlo Nađ (autor)

Avatar Url Jasmina Obhođaš (autor)

Citiraj ovu publikaciju

Valković, Vladivoj; Sudac, Davorin; Nađ, Karlo; Obhođaš, Jasmina
New neutron log for small scale variations in carbon/oxygen ratio // IEEE transactions on nuclear science, 62 (2015), 2; 407-414 doi:10.1109/TNS.2015.2390671 (međunarodna recenzija, članak, znanstveni)
Valković, V., Sudac, D., Nađ, K. & Obhođaš, J. (2015) New neutron log for small scale variations in carbon/oxygen ratio. IEEE transactions on nuclear science, 62 (2), 407-414 doi:10.1109/TNS.2015.2390671.
@article{article, year = {2015}, pages = {407-414}, DOI = {10.1109/TNS.2015.2390671}, keywords = {carbon, carbon/oxygen ratio, gamma ray spectra, neutrons, oil fields, oxygen, small scale variations}, journal = {IEEE transactions on nuclear science}, doi = {10.1109/TNS.2015.2390671}, volume = {62}, number = {2}, issn = {0018-9499}, title = {New neutron log for small scale variations in carbon/oxygen ratio}, keyword = {carbon, carbon/oxygen ratio, gamma ray spectra, neutrons, oil fields, oxygen, small scale variations} }
@article{article, year = {2015}, pages = {407-414}, DOI = {10.1109/TNS.2015.2390671}, keywords = {carbon, carbon/oxygen ratio, gamma ray spectra, neutrons, oil fields, oxygen, small scale variations}, journal = {IEEE transactions on nuclear science}, doi = {10.1109/TNS.2015.2390671}, volume = {62}, number = {2}, issn = {0018-9499}, title = {New neutron log for small scale variations in carbon/oxygen ratio}, keyword = {carbon, carbon/oxygen ratio, gamma ray spectra, neutrons, oil fields, oxygen, small scale variations} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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