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8244092 
Journal Article 
Mechanism of hydrocarbon migration of paleozoic clastic rocks in western section of the tabei uplift, tarim basin: YM34 silurian accumulations as a case 
Guan, W; Zha, M; Li, T; Qu, J; Li, F; Deng, L; Tan, Y; Zhang, C 
2020 
Springer 
782-797 
English 
The oil and gas resource of YM34 Silurian accumulations is abundant, with a great potential for exploration and development. However, there is less research on the hydrocarbon migration mechanism because of complex structure and few data in the YM34 Silurian accumulations. By using gas chromatography-mass spectrometry (GC/MS) technique, the group composition, and biomarkers, including N-alkanes, isoparaffin and steroid hopane from saturated hydrocarbon and methyl phenanthrene, alkyl dibenzothiophene (DBTs) and triaromatic steroid(TAS) from aromatic hydrocarbons, which from 108 samples in 20 representative wells of YM34 Silurian accumulations and its peripheral reservoirs, are systematically analyzed and studied. The results indicate that: (1) along direction of hydrocarbon migration, the MPR, F1, and F2 increase, but the MPI1 decreases, which is caused by the relative larger amount of phenanthrene in the samples; (2) during oil and gas migration, the geochromatography effect of triaromatic steroid will happen. Along the migration pathway, the value of C27(20R)/C28(20R) increases; (3) the hydrocarbon charging point of YM34 Silurian accumulations is in the western YM342 and YM343 wells, and oil and gas are charged from west to east, which has certain guiding significance for progressive evaluation and development geological modeling of YM34 Silurian accumulations. © Springer Nature Singapore Pte Ltd 2020. 
Gas chromatography-mass spectrometry (GC/MS); Geochromatography; Hydrocarbon compound; Hydrocarbon migration; Silurian accumulations 
Lin J.