Radiant energy – Geological testing or irradiation
Patent
1974-09-27
1976-08-24
Dixon, Harold A.
Radiant energy
Geological testing or irradiation
250262, 250363R, G01V 500
Patent
active
039768783
ABSTRACT:
In accordance with an illustrative embodiment of the present invention, a method and apparatus is disclosed for determining the presence of a selected number of naturally radioactive materials in an earth formation from the spectrum of natural gamma radiation emitted by the materials in the formation by deriving representations of portions of the detected gamma radiation spectrum and combining the representations to determine therefrom the presence of the selected materials.
REFERENCES:
patent: 2850642 (1958-09-01), Seevers
patent: 2897368 (1959-07-01), Lundberg et al.
patent: 3105149 (1963-09-01), Guitton et al.
patent: 3560744 (1971-02-01), Jordan
patent: 3825751 (1974-07-01), Johnson
Chevalier Philippe
Seeman Bronislav
Dixon Harold A.
Schlumberger Technology Corporation
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