Portable nuclear magnetic resonance rock sample analyzer has the remarkable characteristics of “one machine with multiple parameters, the same with multiple parameters, rapid non-destructive testing”, which can be used for non-destructive analysis and measurement of cores with diameter less than 100 mm, various irregular cores, cuttings and borehole wall coring in drilling field or laboratory. The main measurement parameters include porosity, permeability, movable fluid, irreducible water, movable water, T2 cut-off value and oil saturation. Nuclear magnetic resonance rock sample analysis technology can not only detect the content of fluid in rock samples, but also detect the properties of fluid and the occurrence state of fluid in rock samples.
Technical index
- Working environment temperature: 20 ± 5 degree;
- Working environment humidity: 50% – 70% (non condensing);
- Power: AC 220 V / 50 Hz;
- System frequency: 2mhz-5mhz, continuously adjustable;
- Impact field strength: 1200 Gauss;
- 25 mm probe effective sample measurement area: Φ 25 x 30 mm;
- Frequency accuracy: 0.01Hz;
- RF transmitting power: 25W;
- RF phase change capability: 4;
- Signal receiving mode: digital quadrature;
- Maximum echo number: 8000;
- Minimum echo time: 300 μs;
- Probe switching time: less than 0.5s;
- The linearity of the instrument is above 0.999;
- The repeatability error of sample measurement is within 5%;
- NMR porosity error is less than 8% (or 1.2 PU);
- NMR permeability (average 0.3 order of magnitude after injection of a group of samples)
- The oil saturation error of NMR is less than 10%.
