Pulsed nuclear magnetism tool for formation evaluation while dri

Details Pulsed nuclear magnetism tool for formation evaluation while dri Pulsed nuclear magnetism tool for formation evaluation while dri

1997-03-17

1999-07-13

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Using well logging device

G01V 300

Patent

active

059231670

ABSTRACT:
A logging-while-drilling tool contains a pulsed nuclear magnetic resonance (NMR) device for evaluating earth formations. An antenna of the pulsed NMR device is electromagnetically coupled with a drill collar of the tool for evaluating earth formations. In this way, the antenna generates a magnetic dipole parallel to a surface of the drill collar and the drill collar enhances the electromagnetic field generated by the antenna.

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