Method and apparatus for formation logging using position sensit

Details Method and apparatus for formation logging using position sensit Method and apparatus for formation logging using position sensit

1984-10-09

1986-02-11

Howell, Janice A.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

250269, G01V 500

Patent

active

045700672

ABSTRACT:
One or more position sensitive neutron detectors in a borehole logging tool provide for making dual-porosity dual-spaced neutron porosity logs with fewer detectors and a more compact tool, by separately detecting both thermal and epithermal neutrons in a single detector. The position sensitivity also provides for determining, with a single neutron detector, particular neutron characteristic lengths in the earth formations being logged.

REFERENCES:
patent: 3906224 (1975-09-01), Scott et al.
patent: 4005290 (1977-01-01), Allen
patent: 4035639 (1977-07-01), Boutemy et al.
patent: 4379228 (1983-04-01), Allen

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