Patent ID: 8686724

Claim:
A laboratory apparatus comprising: means for providing downhole tool data corresponding to a hydrocarbon-bearing sample collected from a given subsurface formation, the downhole tool data including parameters used by a downhole tool during nuclear magnetic resonance (NMR) measurements of the given subsurface formation, the downhole tool data including at least one parameter that represents a time interval pertaining to a pulse sequence that is part of the NMR measurements performed by a downhole tool, the pulse sequence for generating at least one diffusion-encoding echo; a sample volume; and measurement means for applying at least one NMR measurement to the sample volume to thereby determine a property of a sample positioned in the sample volume, the at least one NMR measurement applying to the sample volume a homogeneous static magnetic field in conjunction with a pulse sequence of oscillating magnetic field and a pulsed-mode gradient field, wherein the pulsed-mode gradient field is defined by a set of pulses that are equivalent to a fixed field gradient for a corresponding NMR measurement performed by the downhole tool, and wherein the fixed field gradient is defined by the downhole tool data corresponding to the hydrocarbon-bearing sample.