Method for determining the slowing down length and the porosity

Details Method for determining the slowing down length and the porosity Method for determining the slowing down length and the porosity

1992-04-09

1993-12-21

Envall, Jr., Roy N.

Boots, shoes, and leggings

73153, 73 38, 73155, G01V 500

Patent

active

052726290

ABSTRACT:
The present invention relates to the determination of a spatial formation parameter such as slowing down length and porosity in a measurement while drilling ("MWD") tool. The invention, more particularly, relates to the use of a neutron source and multiple neutron detectors in an MWD tool to determine the slowing down length of neutrons in the formation and to derive the formation porosity from the determined slowing down length.

REFERENCES:
patent: 3567935 (1971-03-01), Nagel
patent: 4605854 (1986-08-01), Smith, Jr.
patent: 4810459 (1989-03-01), Fontenot

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