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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
To understand variations in geochemistry, organic petrology, and chemical composition of crude oil and byproducts, an immature sample from the Cretaceous Qingshankou Formation in the Songliao Basin, China, was analyzed by anhydrous and hydrous pyrolysis (AHP/HP) at a wide range of temperatures ranging from 300 °C to 450 °C. The geochemical parameters: TOC, S<sub>2</sub>, HI, and T<sub>max</sub> obtained from Rock-Eval pyrolysis showed both a decrease and an increase as thermal maturity progressed under HP and AHP conditions. Gas chromatography (GC) analysis showed the presence of n-alkanes in the C<sub>14</sub> to C<sub>36</sub> range in both expelled and residual byproducts, a Delta-shaped configuration although many samples had a gradually reducing (tapering) trend toward the high range. Gas chromatography-mass spectrometry (GC-MS) analysis revealed both an increase and a decrease in biomarker and very small changes in aromatic compound variations with increasing temperature during pyrolysis. To be more specific, C<sub>29</sub>T<sub>s</sub> biomarker increased with temperature for the expelled byproduct, while the opposite trend was observed for the residual one. Next, The T<sub>s</sub>/T<sub>m</sub> ratio initially increased and then decreased with temperature while the C<sub>29</sub>H/C<sub>30</sub>H ratio fluctuated for the expelled byproduct but increased for the residual. Moreover, the GI and C<sub>30</sub> rearranged hopane to C<sub>30</sub> hopane ratio remained unchanged whereas the C<sub>23</sub> tricyclic terpane/C<sub>24</sub> tetracyclic terpane ratio and the C<sub>23</sub>/C<sub>24</sub> tricyclic terpane ratio showed varying trends with maturity alike the C<sub>19</sub>/C<sub>23</sub> and C<sub>20</sub>/C<sub>23</sub> tricyclic terpane. Ultimately, based on organic petrography observations, increasing the temperature resulted in higher bitumen reflectance (%Bro, r) and optical and structural alterations in the macerals. The findings of this study provide valuable insights for future exploration endeavors in the studied region. Moreover, they contribute to our understanding of the significant role of water in the generation and expulsion of petroleum and associated byproducts, thereby facilitating the development of updated models in this field.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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