Experimental investigation on the oil occurrence and mobility of lacustrine shales in offshore area of China using 1D/2D nuclear magnetic resonance and centrifugal techniques,International Journal of Coal Geology

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Experimental investigation on the oil occurrence and mobility of lacustrine shales in offshore area of China using 1D/2D nuclear magnetic resonance and centrifugal techniques
International Journal of Coal Geology ( IF 5.6 ) Pub Date : 2024-10-13 , DOI: 10.1016/j.coal.2024.104618
Sijia Nie, Feng Yang, Long Luo, Kong Deng, Luyu Du

Shale oil occurrence mechanism and mobility have significant influences on hydrocarbons extraction from shale systems. However, the effects of petrophysical and petroleum geochemical properties on oil mobility are not understood. In this study, shales with different lithofacies were investigated using thin sections, scanning electron microscopy, nuclear magnetic resonance (NMR), and organic geochemical analysis. Shales at original, extracted, oil-saturated, and centrifugal states were systematically scanned using 1D and 2D NMR technologies. The multi-scaled pores were obtained by comparing the T2 spectra of samples at different states. The 2D NMR identification spectra for hydrocarbon-bearing components were established. The free oil, adsorbed oil, mobile oil contents were quantitatively evaluated and the geological controls on oil mobility were discussed.

更新日期：2024-10-13

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