Radiant energy – Coded record and readers; invisible radiant energy type
Patent
1980-12-30
1983-06-07
Smith, Alfred E.
Radiant energy
Coded record and readers; invisible radiant energy type
250253, G01V 500
Patent
active
043873022
ABSTRACT:
A source of fast neutrons is pulsed to irradiate the formations surrounding a borehole with neutrons to produce inelastic neutron scattering in metallic materials located within the formations. Gamma-rays emitted from the formations in response to the inelastic neutron scattering from the metallic materials is detected as an indication of the presence of such materials within the formations.
REFERENCES:
patent: 2922886 (1960-01-01), Putman
patent: 3792253 (1974-02-01), Wylie et al.
patent: 3940610 (1976-02-01), Dennis et al.
patent: 4136279 (1979-01-01), Hopkinson
Gilman Michael G.
Hager George W.
Howell Janice A.
Huggett Charles A.
Mobil Oil Corporation
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