Patent ID: 7663363

Claim:
A method for measuring nuclear magnetic resonance (NMR) relaxation properties of a formation with a high signal to noise ratio (SNR), the method comprising: applying a magnetic field to nuclei of the formation during a polarizing interval, the magnetic field comprising a polarizing intensity having a constant magnitude resulting in a longitudinal magnetization (M z ) of the nuclei wherein the polarizing interval begins and ends before the (M z ) decreases; decreasing the applied magnetic field to a measurement intensity having a constant magnitude, the measurement intensity magnetic field applied to the nuclei of the formation during a measurement interval wherein a time interval for the decreasing is substantially shorter than a minimum longitudinal relaxation time of the nuclei; applying to the formation at least one radio frequency (RF) pulse train during the measurement interval; measuring an NMR signal from the formation in order to measure the NMR relaxation properties with the high SNR; and using a processor in order to perform at least one of the following tasks: store the NMR signal, analyze the NMR signal, use the NMR signal for equipment operation, and present the NMR signal to a user.