High frequency NMR characterization of the Eagle Ford shale formation
Conventional Nuclear Magnetic Resonance (NMR) measurements are conducted utilizing NMR logs in downhole in situ stress state as well as using low field (2 MHz) NMR measurements on preserved core samples. These measurements can reveal some of these pore space characteristics and the relaxation mechanisms dominant in these pores for medium to high permeability samples. As shale cores have very low permeabilities and extremely small particle sizes and associated small pore spaces, their investigation at high field (400 MHz) can reveal much more details. The main objective of of using a high field ...
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