Downhole nuclear magnetic resonance (NMR) tool for one- dimensional NMR imaging

A method of obtaining nuclear magnetic resonance (NMR) data in a well bore, comprising:

• introducing a NMR tool into the wellbore, wherein the NMR tool comprises a motional sensor operable to generate readings due to lateral motion;
• producing a static magnetic field;
• using an RF antenna of the motional sensor, applying an RE pulse sequence to a plurality of excitation volumes in a region of interest including the wellbore, wherein applying the pulse sequence comprises applying a plurality of imaging sequences, each of the plurality of imaging sequences comprising an excitation RF pulse and a plurality of refocusing RF pulses, and applying a forced recovery pulse between each of the plurality of imaging sequences to provide a recovery in equilibrium nuclear magnetization;
• applying an auxiliary refocusing pulse subsequent to the forced recovery pulse, the auxiliary refocusing pulse being operable to remove measurement artifacts from the measured NMR data;
• acquiring one or more NMR echo signals for each of the plurality of excitation volumes, wherein at least one of the NMR echo signals is acquired from fluid in the wellbore;
• generating a one-dimensional image of the region of interest in order to determine a lateral displacement of the NMR tool inside the wellbore;
• and
• using the one-dimensional image to reduce the effect of the lateral displacement on the NMR data.