Lab based NMR core analysis systems, of which the GeoSpec is the latest, were originally designed to allow petroleum engineers and well log analysts to calibrate the down hole NMR data. NMR technology can be affected by changing temperatures, polarity anomalies, and radio signals created naturally and by other electronics equipment. Downhole NMR well log tools work in very dirty, volatile and signal rich environments. As a result, it is very difficult to perform accurate and controlled measurements.
Lab based NMR instruments work in a much more clean and controlled environment, so lab based rock core NMR analysis is used to calibrate the data collected by the downhole NMR tools.
The application of lab based NMR can provide many “reality” checks for the NMR log data analyzers; including more accurate T2 cut offs, which are a key indicator of where the oil or gas is located in a test well.
For more information on how NMR Well Log Calibration is performed, see the Application Note in the sidebar.
