Method for determining the composition of natural gas liquids, mean pore-size and tortuosity in a subsurface formation using NMR

Abstract

New methods for determining the volumetric composition and saturation of methane and NGLs (natural gas liquids: ethane, propane, butane, and pentane) in a petroleum reservoir combining NMR (nuclear magnetic resonance) logging and NMR core analysis and for determining the mean pore-size and tortuosity of the light hydrocarbon-filled porosity in a petroleum reservoir using NMR core analysis.

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Vinegar, Harold J., Singer, Philip M., Hirasaki, George J., Chen, Zeliang and Wang, Xinglin, "Method for determining the composition of natural gas liquids, mean pore-size and tortuosity in a subsurface formation using NMR." Patent US11099292B1. issued 2021-08-24. Retrieved from https://hdl.handle.net/1911/111994.

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