Computer-controlled, portable pulsed NMR instrument and method of use wherein depolarization is ultrashortened using pseudo randomly spaced and oriented RF depolarization pulses
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United States of America Patent
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Sep 17, 1985
Grant Date -
N/A
app pub date -
Jun 17, 1983
filing date -
Jun 17, 1983
priority date (Note) -
Expired
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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.
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