Patent ID: 11965845
Assignee: NORTHEAST PETROLEUM UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 1:
2. The method for measuring fluid saturation in nuclear magnetic resonance (NMR) on-line displacement according to claim 1, characterized in that, the measuring a nuclear magnetic resonance (NMR) T2 spectrum under the dead volume filling of the on-line displacement system as displacing phase fluid and the core to be measured as saturated nuclear magnetic detection phase fluid to generate a calibrated T2 spectrum, includes:
saturating the core to be measured with the nuclear magnetic detection phase fluid and filling it into the core holder;
applying a predetermined confining pressure to the core holder by means of a ring pressure pump and a pressure gauge on the third pipe;
opening the valves on the liquid discharge end evacuation pipe and the liquid inlet end evacuation pipe respectively, and filling the displacing phase fluid into the dead volume of the on-line displacement system;
closing the liquid inlet end evacuation pipe and the valves on the liquid discharge end evacuation pipe;
performing nuclear magnetic resonance (NMR) scanning on the displacing phase fluid in the dead volume and the core to be measured to generate the calibrated T2 spectrum.