Neutron logging of formation porosity

Details Neutron logging of formation porosity Neutron logging of formation porosity

1976-03-29

1977-07-12

Willis, Davis L.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

250266, 250269, G01v 500

Patent

active

040356396

ABSTRACT:
In accordance with an illustrative embodiment of the present invention, a technique is disclosed for determining the porosity of an earth formation by irradiating the formation with a source of neutrons and measuring the resulting neutron population at a given spacing from the source. The neutron population measurement is converted into a signal which is related to the formation porosity in accordance with the relationship:

REFERENCES:
patent: 3701902 (1972-10-01), Janssen et al.
patent: 3789219 (1974-01-01), Wilson
patent: 3833809 (1974-09-01), Beil
patent: 3842265 (1974-10-01), Pitts, Jr.

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