Result of NMR of Viscous Oil Samples and Viscosity Experimental Measurement

Abstract

Nuclear magnetic resonance ( NMR) logging is the only logging for providing information on oil viscosity. The relationship between T_2 and viscosity is established by using NMR measurement with 6 barrels of oil samples, its correlation coefficient is 0.966, based on it NMR logging can be used to estimate oil viscosity. After T_2 changing with temperature is analyzed, fluid properties of viscous reservoirs can be established based the distribution of T_2.