Technique for obtaining high vertical resolution formation captu

Details Technique for obtaining high vertical resolution formation captu Technique for obtaining high vertical resolution formation captu

1989-06-08

1991-02-05

Hannaher, Constantine

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

250266, 250270, G01V 510

Patent

active

049907743

ABSTRACT:
Improved vertical resolution from pulse neutron logs is obtained by the disclosed process; a pulse of fast neutrons is emitted from a source and counts are taken at near and far dectors. This is done repetitively so that the interval between neutron bursts is conveniently divided into a number of gates, the preferred form being six contiguous gates. The count rate especially in gates 3-6 is obtained and is processed in a modified form to thereby enhance vertical resolution. While before vertical resolution was dependent in part in spacing of the detectors and source, improved vertical resolution is obtained to thereby locate thin beds which would otherwise be obscured.

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Enhanced Vertical Resolution Processing of Dual Detector Gamma-Gamma Density Logs--6/87--Flaum and Glaford.
Enhanced Resolution Processing of Compensated Neutron Logs--June 1989; Galford, Flaum et al.

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