The organic matter type in the shale rock samples assessed by FTIR-ATR analyses

• Autorzy: Mroczkowska-Szerszeń M. , Ziemianin K. , Brzuszek P. , Matyasik I. , Jankowski L.

Warianty tytułu

PL

Typ substancji organicznej w łupkach, a jej widma spektroskopowe FTIR-ATR

• Języki publikacji: EN

Abstrakty

EN

The aim of the paper was to show possibilities of applying the relatively new, and quick FTIR molecular vibrational spectroscopy with Attenuated Total Reflectance – ATR technique – in order to correlate extracted organic matter samples of different types with its infrared spectra. The technique was employed for 22 shale rock samples of the Carpatian Flysch – mainly from Menilite Beds, Istebna Beds and Verovice Beds. They were selected on the basis of their different maturity levels – from immature ones through all stages of the oil window, up to the early gas window phase of generating hydrocarbons. The Rock-Eval analysis and optical microscope techniques (organic petrography and vitrinite reflectance), were the methods chosen to confirm the samples classification assessment, in terms of kerogen typing and samples maturity. The major kerogen types in these source rocks include Type I, II and III. In consequence the measurement and data analysis (like choosing analytical bands and parameterization) for distinguishing between different kerogen types (I-III) should be possible by the proposed FTIR-ATR technique.

PL

Artykuł przedstawia możliwości zastosowania relatywnie nowej, szybkiej odmiany spektroskopii w podczerwieni FTIR – w wydaniu z wykorzystaniem techniki ATR (Attenuated Total Reflectance) – bazującej na zjawisku tłumionego całkowitego odbicia. Celem jest korelacja próbek kerogenu reprezentujących różne jego typy z ich widmami w podczerwieni. Przebadano 22 próbki skał formacji łupkowych fliszu karpackiego. Były to łupki menilitowe, warstwy istebniańskie oraz wierzowskie, wyselekcjonowane w taki sposób by reprezentować różne stopnie dojrzałości materii organicznej – od niedojrzałych poprzez okno ropne aż do okna gazowego. W celu potwierdzenia ich klasyfikacji przeprowadzono badania pirolizy Rock-Eval, użyto mikroskopowych metod petrograficznych jak analiza refleksyjności witrynitu oraz petrografia składników organicznych. Stwierdzono, iż poszczególne próbki przynależą do kerogenu typu I, ale także II oraz III . Na podstawie przeprowadzonych dotychczas badań oraz doniesień literaturowych stwierdzono, iż rozróżnienie takie było możliwe także z użyciem zaproponowanej w pracy odmiany metod spektroskopii w podczerwieni – FTIR-ATR. Jednak w celu bardziej szczegółowego poznania ograniczeń metody oraz stwierdzenia zakresu jej stosowalności konieczne jest przeprowadzenie badań na większej populacji próbek.

Słowa kluczowe

EN

shale rock analysis; organic matter FTIR analysis with ATR mode; vitrinite reflectance; Rock-Eval and petrographical analysis

PL

analizy próbek formacji łupkowych; analizy materii organicznej metodą FTIR-ATR; refleksyjność witrynitu; analizy Rock-Eval

• Wydawca: Instytut Nafty i Gazu - Państwowy Instytut Badawczy
• Czasopismo: Nafta-Gaz
• Rocznik: 2015
• Tom: R. 71, nr 6
• Strony: 361--369
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wykr.

Twórcy

autor

Mroczkowska-Szerszeń M.

• Geology and Geochemistry Department Oil and Gas Institute – National Research Institute ul. Lubicz 25A 31-503 Kraków

autor

Ziemianin K.

• Geology and Geochemistry Department Oil and Gas Institute – National Research Institute ul. Lubicz 25A 31-503 Kraków

autor

Brzuszek P.

• Geology and Geochemistry Department Oil and Gas Institute – National Research Institute ul. Lubicz 25A 31-503 Kraków

autor

Matyasik I.

• Geology and Geochemistry Department Oil and Gas Institute – National Research Institute ul. Lubicz 25A 31-503 Kraków

autor

Jankowski L.

• Polish Geological Institute – National Research Institute Carpathian Branch in Cracow ul. Skrzatów 1, 31-560 Kraków

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Uwagi

EN

The paper was prepared on the basis of statutory study entitled: The organic matter type and its FTIR spectrum, molecular structure – by spectroscopic and petrographic analysis on shale rock samples – kindly financed by Ministry of Science and Higher Education, archive DWR: KD-4100-51 order no.: 51/SG.