Multi-function natural gamma ray logging system

Details Multi-function natural gamma ray logging system Multi-function natural gamma ray logging system

1983-10-05

1986-04-29

Smith, Alfred E.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

G01V 506

Patent

active

045859396

ABSTRACT:
A multi-function compensated spectral natural gamma ray logging method provides for determining formation and borehole characteristics directly from naturally occurring formation radiation. The method, which measures formation lithology in open holes and mean casing thickness in cased wells, incorporates active compensation for differences in borehole conditions when calculating relative elemental formation abundancies or concentrations of potassium (K), uranium (U) and thorium (T).

REFERENCES:
patent: 3662172 (1972-05-01), Youmans
patent: 3976878 (1976-08-01), Chevalier et al.
patent: 4492863 (1985-01-01), Smith, Jr.

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