Computer-controlled, portable pulsed NMR instrument and method o

Details Computer-controlled, portable pulsed NMR instrument and method o Computer-controlled, portable pulsed NMR instrument and method o

1981-04-15

1983-06-21

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using well logging device

324312, G01R 3308

Patent

active

043896138

ABSTRACT:
In accordance with the present invention, fluid-flow properties of a rock sample based on NMR response of the hydrogen nuclei of interstitial fluids within the pore space of such sample, can be swiftly and accurately achieved using a computer-controlled, portable NMR instrument. Inherent instrument inadequacies (DC field inhomogeneity and large phase background jitter) are themselves relied upon to increase the data-throughput efficiency, i.e., the number of NMR responses performed per unit time. Result: Even though the instrument is placed at field sites away from the usual processing center, quick analysis of rock samples as during the drilling of a well, still results.

REFERENCES:
patent: 3475680 (1969-10-01), Anderson et al.
patent: 3824452 (1974-07-01), Freeman et al.
patent: 4045723 (1977-08-01), Ernst
patent: 4291271 (1981-09-01), Lauffer

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