Deconvolving gamma-ray logs by adaptive zone refinement

B. Dickson; M. Craig

doi:10.1190/geo2012-0036.1

Deconvolving gamma-ray logs by adaptive zone refinement

B. Dickson^*, M. Craig

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Uranium exploration and mining make widespread use of gamma-ray logs to determine ore-grade distribution in situ. Attenuation, scattering, and uncollimated detectors all degrade the signal, hampering accuracy. We deconvolve their effects from the measured logs by space-domain processing with the aid of a function that takes account of detector length and uranium ore-zone thickness. The output quantifies uranium grade by zones of specified location and thickness. With this method, thin zones of very high grade can be used for calibration. Illustrative data come from model pits in Australia, Canada, and the USA.

Original language	English
Pages (from-to)	D159-D169
Number of pages	11
Journal	Geophysics
Volume	77
Issue number	4
DOIs	https://doi.org/10.1190/geo2012-0036.1
Publication status	Published - Jul 2012

Keywords

Borehole geophysics
Deconvolution
Logging
Radiation

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10.1190/geo2012-0036.1

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AB - Uranium exploration and mining make widespread use of gamma-ray logs to determine ore-grade distribution in situ. Attenuation, scattering, and uncollimated detectors all degrade the signal, hampering accuracy. We deconvolve their effects from the measured logs by space-domain processing with the aid of a function that takes account of detector length and uranium ore-zone thickness. The output quantifies uranium grade by zones of specified location and thickness. With this method, thin zones of very high grade can be used for calibration. Illustrative data come from model pits in Australia, Canada, and the USA.

KW - Borehole geophysics

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KW - Logging

KW - Radiation

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Deconvolving gamma-ray logs by adaptive zone refinement

Abstract

Keywords

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