The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia)
Abstract
The amount and the composition of liquid hydrocarbons (HCs) obtained by pyrolysis of oil
shale depend on kerogen type, as well as pyrolytic system and conditions [1]. The aim of this study
was to compare HCs composition of bitumen isolated from raw oil shale samples (osh) and shale oils
obtained by pyrolysis of oil shales in an open system (os) and close system (cs) (Table 1).
Investigation has been made on immature outcrop oil shale samples (vitrinite reflectance of 0.41 %
Rr) from the Aleksinac deposit (Serbia). Pyrolysis experiments were performed on the two selected
samples, which have shown the highest quantity of total organic carbon (TOC > 13 %) and high HCs
generation potential (Hydrogen Index, HI > 615 mg HCs/g TOC) in the studied sample set [2].
The HCs composition of the shale oils obtained by open system pyrolysis indicates low
maturity. They are similar to distributions of HCs in bitumens isolated from raw (initial) oil shales
(Table 1). Therefore open system pyr...olysis can be useful for assessment of source and depositional
environment of organic matter. On the other head, shale oils obtained by pyrolysis in the close system
have distributions of HCs which correspond to higher maturity and they are similar to composition
of HCs in crude oil, generated in early stage of “oil window” (Table 1). Therefore, for artificial
generation of shale oil (from immature oil shale), having composition comparable to crude oil, the
close system pyrolysis is required. CPI – Carbon Preference Index, calculated from distributions of n-alkanes; Rc – calculated vitrinite
reflectance = 0.49 x C29ααα20S/20R + 0.33; / – Not determined due to the absence of C29 αββ 20Rsterane in these samples.
Source:
10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings, 2018, 809-Publisher:
- IFPM and IHN of the Siberian Branch of the Russian Academy of Sciences, Tomsk
Funding / projects:
- Geochemical investigations of sedimentary rocks - fossil fuels and environmental pollutants (RS-MESTD-Basic Research (BR or ON)-176006)
Collections
Institution/Community
Hemijski fakultet / Faculty of ChemistryTY - CONF AU - Gajica, G. AU - Šajnović, Aleksandra AU - Stojanović, Ksenija A. AU - Jovančićević, Branimir PY - 2018 UR - http://cherry.chem.bg.ac.rs/handle/123456789/5177 AB - The amount and the composition of liquid hydrocarbons (HCs) obtained by pyrolysis of oil shale depend on kerogen type, as well as pyrolytic system and conditions [1]. The aim of this study was to compare HCs composition of bitumen isolated from raw oil shale samples (osh) and shale oils obtained by pyrolysis of oil shales in an open system (os) and close system (cs) (Table 1). Investigation has been made on immature outcrop oil shale samples (vitrinite reflectance of 0.41 % Rr) from the Aleksinac deposit (Serbia). Pyrolysis experiments were performed on the two selected samples, which have shown the highest quantity of total organic carbon (TOC > 13 %) and high HCs generation potential (Hydrogen Index, HI > 615 mg HCs/g TOC) in the studied sample set [2]. The HCs composition of the shale oils obtained by open system pyrolysis indicates low maturity. They are similar to distributions of HCs in bitumens isolated from raw (initial) oil shales (Table 1). Therefore open system pyrolysis can be useful for assessment of source and depositional environment of organic matter. On the other head, shale oils obtained by pyrolysis in the close system have distributions of HCs which correspond to higher maturity and they are similar to composition of HCs in crude oil, generated in early stage of “oil window” (Table 1). Therefore, for artificial generation of shale oil (from immature oil shale), having composition comparable to crude oil, the close system pyrolysis is required. CPI – Carbon Preference Index, calculated from distributions of n-alkanes; Rc – calculated vitrinite reflectance = 0.49 x C29ααα20S/20R + 0.33; / – Not determined due to the absence of C29 αββ 20Rsterane in these samples. PB - IFPM and IHN of the Siberian Branch of the Russian Academy of Sciences, Tomsk C3 - 10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings T1 - The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia) SP - 809 DO - 10.17223/9785946217408/556 ER -
@conference{ author = "Gajica, G. and Šajnović, Aleksandra and Stojanović, Ksenija A. and Jovančićević, Branimir", year = "2018", abstract = "The amount and the composition of liquid hydrocarbons (HCs) obtained by pyrolysis of oil shale depend on kerogen type, as well as pyrolytic system and conditions [1]. The aim of this study was to compare HCs composition of bitumen isolated from raw oil shale samples (osh) and shale oils obtained by pyrolysis of oil shales in an open system (os) and close system (cs) (Table 1). Investigation has been made on immature outcrop oil shale samples (vitrinite reflectance of 0.41 % Rr) from the Aleksinac deposit (Serbia). Pyrolysis experiments were performed on the two selected samples, which have shown the highest quantity of total organic carbon (TOC > 13 %) and high HCs generation potential (Hydrogen Index, HI > 615 mg HCs/g TOC) in the studied sample set [2]. The HCs composition of the shale oils obtained by open system pyrolysis indicates low maturity. They are similar to distributions of HCs in bitumens isolated from raw (initial) oil shales (Table 1). Therefore open system pyrolysis can be useful for assessment of source and depositional environment of organic matter. On the other head, shale oils obtained by pyrolysis in the close system have distributions of HCs which correspond to higher maturity and they are similar to composition of HCs in crude oil, generated in early stage of “oil window” (Table 1). Therefore, for artificial generation of shale oil (from immature oil shale), having composition comparable to crude oil, the close system pyrolysis is required. CPI – Carbon Preference Index, calculated from distributions of n-alkanes; Rc – calculated vitrinite reflectance = 0.49 x C29ααα20S/20R + 0.33; / – Not determined due to the absence of C29 αββ 20Rsterane in these samples.", publisher = "IFPM and IHN of the Siberian Branch of the Russian Academy of Sciences, Tomsk", journal = "10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings", title = "The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia)", pages = "809", doi = "10.17223/9785946217408/556" }
Gajica, G., Šajnović, A., Stojanović, K. A.,& Jovančićević, B.. (2018). The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia). in 10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings IFPM and IHN of the Siberian Branch of the Russian Academy of Sciences, Tomsk., 809. https://doi.org/10.17223/9785946217408/556
Gajica G, Šajnović A, Stojanović KA, Jovančićević B. The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia). in 10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings. 2018;:809. doi:10.17223/9785946217408/556 .
Gajica, G., Šajnović, Aleksandra, Stojanović, Ksenija A., Jovančićević, Branimir, "The influence of pyrolysis conditions on hydrocarbons composition of the shale oil (Aleksinac oil shale, Serbia)" in 10th International Conference “Oil and Gas Chemistry”, Tomsk, Russia, October 01-05, 2018. Proceedings (2018):809, https://doi.org/10.17223/9785946217408/556 . .