Brief Overview on the Principles of Nuclear Magnetic Resonance Logging Tool and Its Application
Nuclear magnetic resonance well logging tool polarizes the spins,rotates bulk magnetization vector M0 to the transverse plane which is perpendicular to B0,detects the echo train.Attenuation rate of the echo train indicates the diameter of formation pore and what kind of fluid in the pore.Nuclear magnetic resonance well logging tool has been widely used in petroleum exploration,logging data interpretation is very valuable for the evaluation of reservoir formation.