Method and apparatus for a density indicator using pulsed...

Details Method and apparatus for a density indicator using pulsed... Method and apparatus for a density indicator using pulsed...

G - Physics

01

V

G01V 5/10 (2006.01)

Patent

CA 2609620

A density logging tool with a pulsed neutron source and three or more detectors provides three or more measurements (251). Selection of at least two pairs of measurements (253, 259) yields at least two density estimates (255, 261) from which may be obtained a further density estimate (257). This enables compensation for source variations andprovides redundant measurements that are used to make borehole corrections and/or corrections for casing.

On utilise une source de neutrons pulsés dans un indicateur diagraphique à trois détecteurs ou plus permettant d'effectuer trois relevés ou plus (251). Le choix d'au moins deux paires de relevés (253, 259) permet d'obtenir au moins deux estimations de densité (255, 261) à partir desquelles il est possible d'obtenir une autre estimation de densité (257) Ainsi, il est possible de compenser les variations de source et de disposer de relevés redondants permettant d'effectuer des corrections pour le forage et/ou pour la pose de gainages.

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