Gamma ray spectral tool for borehole use

Details Gamma ray spectral tool for borehole use Gamma ray spectral tool for borehole use

1982-06-16

1985-03-12

Howell, Janice A.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

G01V 504

Patent

active

045047367

ABSTRACT:
This invention relates to a logging tool housing construction for use with gamma ray logging devices. The tool housing is constructed of materials designed for maximum transmission of low energy natural gamma ray energies (E=150-300 Kev). The housing material which encloses a gamma ray detector is a tubular, filament wound graphite composition and has a tubular metal sleeve for wear protection. The core and tubular metal sleeve are constructed and interconnected to meet mechanical and pressure requirements for oil well logging use.

REFERENCES:
patent: 1196928 (1916-09-01), Bylund
patent: 2857522 (1958-10-01), Jones
patent: 2910591 (1959-10-01), Baker
patent: 4171626 (1979-10-01), Yates et al.
patent: 4363137 (1982-12-01), Salisbury
Bulletins No. 20, 21 and 25, "Fibercast.RTM. Pipe and Tubing Engineering Data . . . ", Fibercast Company, Tulsa, Oklahoma, (1958).

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