Patent ID: 11965845
Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 3:
4. The method for measuring fluid saturation in nuclear magnetic resonance (NMR) on-line displacement according to claim 1, characterized in that, the generating the fluid saturation of the on-line displacement system in real time according to the calibrated T2 spectrum and the displacement process T2 spectrum, includes:
determining a boundary relaxation time according to the displacement process T2 spectrum, wherein the boundary relaxation time is a time boundary point in the displacement process T2 spectrum that represents the fluid in the core to be measured and represents the dead volume fluid;
determining a true T2 spectrum in the displacement process of the core to be measured according to the boundary relaxation time;
calculating fluid saturation in the displacement process of the core to be measured according to the true T2 spectrum and the calibrated T2 spectrum.