Neutron-inelastic gamma radiation well logging method and appara

Details Neutron-inelastic gamma radiation well logging method and appara Neutron-inelastic gamma radiation well logging method and appara

1982-06-08

1984-06-12

Howell, Janice A.

Radiant energy

Coded record and readers; invisible radiant energy type

G01V 500

Patent

active

044544200

ABSTRACT:
Methods and apparatus are provided for making improved pulsed neutron derived measurements of the carbon: oxygen ratio in subsurface earth formations. Plural radiation measurements are made as a function of time from the initiation of the neutron pulse to distinguish inelastic and thermal neutron interactions. These measurements are then combined in several different manners to provide an improved carbon:oxygen ratio measurement and multiple porosity and formation lithology indication measurements.

REFERENCES:
patent: 3833809 (1974-09-01), Biel
patent: 4381449 (1983-04-01), Smith, Jr.

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