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

1983-06-17

1985-09-17

Karlsen, Ernest F.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

G01R 3308

Patent

active

045423431

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 inadequacy of a DC field inhomogeneity is controllably augmented by a depolarizing code (provided via a computer-controller controlling a transmitter-pulser) to ensure complete magnetic memory erasing prior to a new measuring cycle. 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, results.

REFERENCES:
patent: 3015062 (1961-12-01), George et al.
patent: 3581191 (1971-05-01), Anderson
patent: 3786341 (1974-01-01), Anderson et al.
patent: 4211974 (1980-07-01), Henry
Fuller, M., "Magnetic Orientation of Borehole Cores", Geophysics, vol. 34, No. 5, Oct. 1969, pp. 772-774.

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