کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4681658 1348864 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A pre-Paleogene unconformity surface of the Sikeshu Sag, Junggar Basin: Lithological, geophysical and geochemical implications for the transportation of hydrocarbons
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
A pre-Paleogene unconformity surface of the Sikeshu Sag, Junggar Basin: Lithological, geophysical and geochemical implications for the transportation of hydrocarbons
چکیده انگلیسی

The unconformity surface at the bottom of the Paleogene is one of the most important migration pathways in the Sikeshu Sag of the Junggar Basin, which consists of three layers: upper coarse clastic rock, lower weathering crust and leached zone. The upper coarse clastic rock is characterized by higher density and lower SDT and gamma-ray logging parameters, while the lower weathering crust displays opposite features. The transport coefficient of the unconformity surface is controlled by its position in respect to the basal sandstone; it is higher in the ramp region but lower in the adjacent uplifted and sag areas. The content of saturated hydrocarbons increases with the decrease of the content of non-hydrocarbons and asphaltenes. The content of benzo[c] carbazole decreases as the content of benzo[a] carbazole and [alkyl carbazole]/[alkyl + benzo carbazole] increases. This suggests that the unconformity surface is an efficient medium for the transportation of hydrocarbons.

Figure optionsDownload as PowerPoint slideHighlights
► The Paleogene Sikeshu unconformity surface consists of upper clastic, lower weathered and leached beds.
► The transport coefficient of the unconformity surface is higher at ramp and lower in uplift/sag.
► The unconformity surface provides efficient hydrocarbon transportation and accumulation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geoscience Frontiers - Volume 4, Issue 6, November 2013, Pages 779–786
نویسندگان
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