Calibrator for radioactivity well logging tools

Details Calibrator for radioactivity well logging tools Calibrator for radioactivity well logging tools

1976-10-28

1978-04-18

Borchelt, Archie R.

Radiant energy

Calibration or standardization methods

250493, 250494, 250496, G01D 1800, G21G 406

Patent

active

040853233

ABSTRACT:
A radioactivity logging tool including a gamma ray detector is field calibrated with the help of a sleeve that has a radioactive material distributed therein and is clamped about the tool so as to completely surround the detector. The radioactive material is peferably uranium 238. It can be either distributed uniformly inside the sleeve or take the form of wires which extend along generatrices or circumferences of the sleeve.

REFERENCES:
patent: 2945129 (1960-07-01), Swift et al.
patent: 3215837 (1965-11-01), Hall, Jr.
patent: 3435215 (1969-03-01), Pritchett
patent: 3449575 (1969-06-01), Smith
patent: 3581095 (1971-05-01), Ransohoff et al.

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