Gamma ray spectral tool for borehole use

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

G - Physics

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G01V 5/12 (2006.01) E21B 47/01 (2006.01) G01V 5/06 (2006.01)

Patent

CA 1200020

GAMMA RAY SPECTAL TOOL FOR BOREHOLE USE (Docket No. WPC-37) 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 detec- tor 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 mechani- cal and pressure requirements for oil well logging use.

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