Vinegar Technologies LLC

Yunke Liu

Harold J Vinegar

Philip M Singer

George J Hirasaki

Xinglin Wang

A method for separating liquid-like (T) from solid-like (T)H NMR transverse relaxation times in porous media uses novel pulse sequences together with aH NMR spectrometer optimized for geological core samples. The method is applied to obtain 1D Tdistributions and 2D T-Tmaps in organic-rich chalks for quantification of liquid-like signal (micropore fluids, meso-macropore fluids, fluids dissolved in organic matter, and clay-bound water) and solid-like signal (kerogen, bitumen, and clay hydroxyls). The novel pulse sequences comprise a solid-echo, which detects more solid-like signal than an FID. The method is used for fluid typing in micro/meso-macro pores, clay mineral identification, determination of kerogen content, and quantification of solvent-extracted bitumen versus bitumen expelled from kerogen due to swelling from dissolved hydrocarbons. The method is used to quantify the asphaltene, resin, aromatic, and/or saturate content of bitumen in the rock.

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Houston, TX, United States of America

Yunke Liu